JP6698248B2 - Coordinate measuring machine, measuring method, and measuring program - Google Patents

Description

  The present invention relates to a coordinate measuring machine, a measuring method, and a measuring program, and more particularly to a measuring technique in a manually operated coordinate measuring machine.

  As a manually operated three-dimensional measuring machine, a form in which a probe is manually operated is known. As another form of the manual operation type three-dimensional measuring machine, a form in which a probe is moved using an operation member such as a joystick is known.

  In the measurement using the manual three-dimensional measuring machine, the measuring machine has to be manually operated, so that there is a problem that the measurement result varies depending on the ability of the measurer. In order to prevent such a problem, it is preferable that the measurer probe the position designated as the design value in the measurement program.

  Patent Document 1 describes a manually operated three-dimensional measuring machine that issues a warning in the case of an erroneous operation in which the operation of the probe is out of the measurement conditions set for each measurement point. According to the manual operation type three-dimensional measuring machine described in Patent Document 1, since the operator can perform the measurement without giving a warning, the measured values are less likely to vary.

  Patent Document 2 describes a manually operated three-dimensional measuring machine including a sub-monitor mounted near the tip of the measurement probe. In the manually operated three-dimensional measuring machine described in Patent Document 2, it is displayed on the sub-monitor that the measurement probe has entered the measurement allowable range.

  With this configuration, even if the computer display cannot be directly viewed, the operator can check the information of the control software at hand without removing the line of sight and without interrupting the measurement. I can concentrate.

JP, 2005-105865, A JP, 2005-141139, A

  However, when the measurer manually operates the measuring machine, there is a problem that the measurer does not know which position on the workpiece as the measurement target is the target measurement position where the measurement instruction is given.

  Further, when the measurer manually operates the measuring machine, there is a problem that the measurer does not know which position of the workpiece should be probed for measurement.

  In other words, at present, there is a problem that the measurer does not know the measurement position of the workpiece to be probed before the measurement. This problem leads to a situation in which the position deviated from the measurement position to be probed is probed and measured, the measurement result varies, and the expected measurement result cannot be obtained.

  The manual operation type three-dimensional measuring machine described in Patent Document 1 allows the measurer to know that the measurement is out of the measurement conditions by issuing a warning, but the measurement conditions are relaxed. Then, the measurement results will vary.

  The manual operation-type three-dimensional measuring machine described in Patent Document 2 allows the operator to know that the measurement probe has entered the measurement allowable range, but when the measurement allowable range is set to a relatively wide range, the measurement result is There will be variations.

  The present invention has been made in view of such circumstances, and in a manually operated three-dimensional measuring machine, a three-dimensional measurement that can obtain a measurement result with less variation without depending on the ability of the operator. A machine, a measuring method, and a measuring program are provided.

  In order to achieve the above object, the following invention modes are provided.

  The coordinate measuring machine according to the first aspect includes a measurement unit including a probe that is manually operated when measuring an object to be measured, a probe position acquisition unit that acquires the position of the probe, and a target at the measurement position of the object to be measured. Measurement position, the target measurement position acquisition unit that acquires the target measurement position determined based on the design information of the measurement target, the position of the probe acquired using the probe position acquisition unit, and the target measurement position acquisition unit The coordinate measuring machine includes: a notification unit that notifies notification information that the position of the probe is approaching the target measurement position in accordance with the distance from the target measurement position acquired by using the.

  According to the first aspect, since the operator who operates the probe can recognize that the position of the probe is approaching the target measurement position by the notification information, the measurement of the position closer to the target measurement position can be performed. Is possible. Therefore, it is possible to obtain a measurement result with less variation, without depending on the ability of the operator.

  A second aspect is the coordinate measuring machine according to the first aspect, wherein the probe position acquisition unit acquires the coordinate value of the probe in the work coordinate system with the measurement object as a reference, as the position of the probe, and the notification unit Calculated by deriving the coordinate value of the target measurement position in the workpiece coordinate system from the design information of the measurement target as the target measurement position, and subtracting the coordinate value of the probe position from the coordinate value of the target measurement position as the notification information. The coordinate difference value to be calculated is derived.

  According to the second aspect, the operator can grasp the difference between the position of the probe and the target measurement position at the measurement position of the measurement object by the coordinate value of the work coordinate system.

  In the second aspect, a three-dimensional orthogonal coordinate system can be applied as the work coordinate system.

  In the second aspect, an aspect in which a work coordinate system is set for each measurement object is preferable.

  A third aspect is the coordinate measuring machine according to the first aspect or the second aspect, in which the notification unit uses the design information of the measurement target as the target measurement position, and the target in the work coordinate system with the measurement target as a reference. The coordinate value of the measurement position is derived, and the coordinate value of the target measurement position in the derived work coordinate system is notified.

  According to the third aspect, the operator can grasp the target measurement position at the measurement position of the measurement object.

  A fourth aspect is the coordinate measuring machine according to any one of the first to third aspects, wherein the notification unit includes a display unit for visually displaying the notification information.

  According to the fourth aspect, the operator can visually recognize the notification information.

  A fifth aspect is the coordinate measuring machine according to the fourth aspect, wherein the display unit displays the notification information using the character information.

  According to the fifth aspect, the operator can grasp the difference between the position of the probe and the target measurement position based on the visual information obtained from the character information.

  One aspect of the character information in the fifth aspect is a coordinate difference obtained by subtracting the coordinate value of the target measurement position from the coordinate value of the probe position.

  A sixth aspect is the coordinate measuring machine according to the fourth aspect or the fifth aspect, wherein the display unit displays the notification information using a level meter.

  According to the sixth aspect, the operator can grasp the target measurement position based on the visual information obtained from the level meter.

  A seventh aspect is the coordinate measuring machine according to any one of the first to third aspects, in which the notification unit converts the notification information into sound information, and the sound conversion unit converts the sound information into sound information. And a voice output unit that outputs the notification information.

  According to the eighth aspect, the operator can grasp the target measurement position from the notification information converted into the sound information.

  The measurement method of the eighth aspect is a measurement method in a coordinate measuring machine that measures a measurement object using a manually operated probe, and includes a probe position acquisition step of acquiring the position of the probe, and measurement of the measurement object. The target measurement position in the position, the target measurement position acquisition step of acquiring the target measurement position determined based on the design information of the measurement object, the position of the probe acquired in the probe position acquisition step, and the target measurement position acquisition And a notification step of notifying notification information indicating that the position of the probe is approaching the target measurement position according to the distance from the target measurement position acquired in the step.

  According to the eighth aspect, the same effect as that of the first aspect can be obtained.

  In the eighth aspect, the same matters as the matters specified in the second to seventh aspects can be appropriately combined. In that case, the constituent elements that carry out the processes and functions specified in the coordinate measuring machine can be understood as the constituent elements of the measuring method that carries the corresponding processing and functions.

  A measurement program according to a ninth aspect is a measurement program in a coordinate measuring machine that measures a measurement object using a probe that is manually operated, and includes a computer, a probe position acquisition unit that acquires the position of the probe, and a measurement object. The target measurement position in the measurement position of, the target measurement position acquisition means for acquiring the target measurement position determined based on the design information of the measurement object, and the position of the probe acquired using the probe position acquisition means, It is a measurement program that functions as a notification unit that notifies notification information indicating that the position of the probe is approaching the target measurement position according to the distance from the target measurement position acquired by using the target measurement position acquisition unit.

  According to the ninth aspect, the same effect as that of the first aspect can be obtained.

  In the ninth aspect, the same matters as the matters specified in the second to seventh aspects can be appropriately combined. In that case, the constituent elements that carry out the processes and functions specified in the coordinate measuring machine can be understood as the constituent elements of the measurement program that carries out the corresponding processes and functions.

  According to the present invention, the operator who operates the probe can recognize that the position of the probe is approaching the target measurement position by notifying the notification information, so that the position of the probe closer to the target measurement position can be determined. It is possible to measure. Therefore, it is possible to obtain a measurement result with less variation, without depending on the ability of the operator.

FIG. 1 is an overall configuration diagram of the coordinate measuring machine according to the first embodiment. FIG. 2 is a block diagram of an information processing unit of the coordinate measuring machine shown in FIG. FIG. 3 is a flowchart showing a procedure flow of a measuring method applied to the coordinate measuring machine shown in FIG. FIG. 4 is a flowchart showing the flow of the procedure for displaying the difference information. FIG. 5 is an explanatory diagram of difference information display in the coordinate measuring machine shown in FIG. FIG. 6 is an explanatory diagram of an example of the part program. FIG. 7 is an explanatory diagram of the spatial correction. FIG. 8 is an explanatory diagram of the origin setting. FIG. 9 is an explanatory diagram of setting the reference axis. FIG. 10 is an explanatory diagram of target measurement position display in the coordinate measuring machine according to the second embodiment. FIG. 11 is an overall configuration diagram of the coordinate measuring machine according to the third embodiment. FIG. 12 is a block diagram of an information processing unit of the coordinate measuring machine shown in FIG. FIG. 13 is an explanatory view of another aspect of the manually operated coordinate measuring machine. FIG. 14 is an explanatory diagram of another aspect of the manually operated coordinate measuring machine.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[Overall configuration of CMM]
FIG. 1 is an overall configuration diagram of the coordinate measuring machine according to the first embodiment. In the present embodiment, a portal-type moving coordinate measuring machine will be described as an example. Coordinate measuring machines are sometimes called Coordinate Measuring Machines. Coordinate Measuring Machine is sometimes abbreviated as CMM.

  In this specification, the same components as those described above are designated by the same reference numerals, and the description thereof will be appropriately omitted.

  X shown in FIG. 1 represents the X-axis direction in the work coordinate system. Y shown in FIG. 1 represents the Y-axis direction in the work coordinate system. Z shown in FIG. 1 represents the Z-axis direction in the workpiece coordinate system.

  The work coordinate system in the coordinate measuring machine shown in FIG. 1 is a three-dimensional orthogonal coordinate system including an X-axis direction, a Y-axis direction, and a Z-axis direction. Details of setting the work coordinate system will be described later.

  The coordinate measuring machine 10 shown in FIG. 1 is a manually operated coordinate measuring machine. The coordinate measuring machine 10 includes a gantry 12 and a table 14. The coordinate measuring machine 10 has a structure in which a table 14 is placed on a pedestal 12.

  On the upper surface 14A of the table 14, a right Y carriage 16R and a left Y carriage 16L are erected. The lower surface 14C of the table 14 is supported by the gantry 12.

  The right Y carriage 16R is erected on one end of the table 14 in the X axis direction. The left Y carriage 16L is erected on the other end of the table 14 in the X axis direction. In FIG. 1, the right end of the table 14 is one end in the X-axis direction. The left end of the table 14 is the other end in the X-axis direction.

  The upper part of the right Y carriage 16R and the upper part of the left Y carriage 16L are connected using an X guide 18. That is, the right Y carriage 16R, the left Y carriage 16L, and the X guide 18 form a gate-shaped frame 26.

  Unless otherwise specified, the above terms in this specification represent the direction opposite to the direction of gravity. Similarly, the terms below in this specification refer to the direction of gravity unless otherwise noted.

  A side surface 14B that is a side surface of the table 14 along the Y-axis direction and is closer to one end portion 14D in the X-axis direction is formed with a sliding surface with the right Y carriage 16R. The right Y carriage 16R is provided with bearings on the surface facing the side surface 14B of the table 14.

  One end 14D in the X-axis direction on the upper surface 14A of the table 14 forms a sliding surface with the right Y carriage 16R. The right Y carriage 16R is provided with a bearing on the surface of the upper surface 14A of the table 14 facing the one end 14D in the X-axis direction.

  Similarly, a side surface 14F on the other end 14E side in the X axis direction, which is a side surface along the Y axis direction of the table 14, forms a sliding surface with the left Y carriage 16L. The left Y carriage 16L is provided with bearings on the surface facing the side surface 14F of the table 14.

  The other end 14E in the X-axis direction on the upper surface 14A of the table 14 forms a sliding surface with the left Y carriage 16L. The left Y carriage 16L is provided with a bearing on the surface of the upper surface 14A of the table 14 facing the other end 14E in the X-axis direction.

  The gate-shaped frame 26 including the right Y carriage 16R, the left Y carriage 16L, and the X guide 18 is supported by the table 14 so as to be movable in the direction parallel to the Y-axis direction.

  A linear scale for detecting the Y-axis direction position is attached to the side surface 14B of the table 14. The Y-axis direction position detection linear scale detects the position of the right Y carriage 16R in the Y-axis direction and generates a detection signal representing the position of the right Y carriage 16R in the Y-axis direction. In FIG. 1, the Y-axis direction position detecting linear scale is not shown.

  An X carriage 20 is attached to the X guide 18. The X guide 18 has a sliding surface 18A with the X carriage 20. The X carriage 20 has a built-in air bearing.

  That is, the X carriage 20 is supported by the X guide 18 so as to be movable in the direction parallel to the X axis direction. The air bearing built in the X carriage 20 is not shown.

  A linear scale for X-axis direction position detection is attached to the X guide 18. The linear scale for position detection in the X-axis direction detects the position of the X carriage 20 in the X-axis direction and generates a detection signal representing the position of the X carriage 20 in the X-axis direction. In FIG. 1, the linear scale for detecting the position in the X-axis direction attached to the X guide 18 is not shown.

  A Z carriage 22 is attached to the X carriage 20. The X carriage 20 has a built-in air bearing for guiding in the Z-axis direction. That is, the Z carriage 22 is supported by the X guide so as to be movable in the direction parallel to the Z axis direction. Note that, in FIG. 1, an air bearing for guiding in the Z-axis direction is omitted.

  A linear scale for Z-axis direction position detection is attached to the X carriage 20. The Z-axis direction position detection linear scale detects the position of the Z carriage in the Z axis direction and generates a detection signal representing the position of the Z carriage in the Z axis direction.

  The X-axis direction position detection linear scale, the Y-axis direction position detection linear scale, and the Z-axis direction position detection linear scale, which are not shown in FIG. 1, are illustrated as a linear scale 121 in FIG. 2.

  The output value of the linear scale for detecting the X-axis direction position can be a coordinate value in the X direction in the work coordinate system. Similarly, the output value of the Y-axis direction position detecting linear scale can be a coordinate value in the Y direction in the work coordinate system. The output value of the Z-axis direction position detecting linear scale may be a coordinate value in the Z direction in the work coordinate system.

  A probe 24 is attached to the lower end of the Z carriage 22. The probe 24 includes a handle 24A, a stylus 24B, and a contact 24C. The base end of the handle 24A is attached to the lower end of the Z carriage 22. The base end of the stylus 24B is attached to the tip of the handle 24A. A contact 24C is attached to the tip of the stylus 24B.

  The handle 24A is a member that the operator holds by hand during measurement. The stylus 24B and the contact 24C form a probe of the probe 24.

  The operator grasps the handle 24A and moves the probe 24. Then, the contact 24C is brought into contact with the measurement position of the measurement object. The probe 24 outputs a detection signal indicating the position of the measurement object with which the contactor 24C is brought into contact.

  The gate-shaped frame 26 including the X carriage 20, the right Y carriage 16R, the left Y carriage 16L, and the Z carriage 22 shown in FIG. 1 is one mode of the measuring unit including the probe.

  The coordinate measuring machine 10 shown in FIG. 1 includes a controller 28. The detection signal output from the probe 24 is input to the controller 28. That is, the controller 28 acquires the coordinate value in the X-axis direction, the coordinate value in the Y-axis direction, and the coordinate value in the Z-axis direction at the measurement position of the measurement target, which is acquired using the probe 24.

  The X-axis direction coordinate value, the Y-axis direction coordinate value, and the Z-axis direction coordinate value at the measurement position of the measurement object acquired by the controller 28 are sent to the computer 32.

  The computer 32 shown in FIG. 1 is connected to the controller 28 so that data communication is possible. The connection form between the computer 32 and the controller 28 may be a connection using the signal line 30 or a wireless connection. The computer 32 and the controller 28 may be connected via a network.

  The computer 32 is installed with software 32A for confirming the measurement result of the coordinate measuring machine 10. Details of the software 32A will be described later. The software 32A in this specification corresponds to a program that causes a computer to execute an arbitrary function of the coordinate measuring machine.

  The coordinate measuring machine 10 shown in FIG. 1 includes a display unit 34. The display unit 34 is connected to the computer 32. The display unit 34 displays various information in the coordinate measuring machine 10. Details of various information displayed on the display unit 34 in the coordinate measuring machine 10 will be described later.

[Explanation of information processing unit]
FIG. 2 is a block diagram of an information processing unit of the coordinate measuring machine shown in FIG. As shown in FIG. 2, the information processing unit 100 is built in the computer 32 shown in FIG.

  The information processing unit 100 shown in FIG. 2 includes a control unit 102, a storage unit 104, and a program execution unit 106. The control unit 102 centrally controls each unit of the information processing unit 100 shown in FIG.

  In addition, the control unit 102 stores various input information in the storage unit 104. Further, the control unit 102 reads out various kinds of information stored in the storage unit 104 and transmits the information to each unit of the information processing unit 100.

  The storage unit 104 may include a primary storage area in which various types of information acquired by using the information processing unit 100 are temporarily stored. The storage unit 104 may include a calculation result storage area in which a calculation result is stored. The storage unit 104 may include a software installation area in which the software 32A shown in FIG. 1 is installed.

  As the storage unit 104, a storage element such as a semiconductor element, a magnetic storage element, or an optical storage element can be applied. The storage unit 104 can include a plurality of types of storage elements. Examples of the semiconductor element include a primary writable and readable storage element called a RAM and a read-only storage element called a ROM.

  The program execution unit 106 is a processing unit that causes the computer 32 to execute the software 32A shown in FIG. For example, when the part program in which the measurement position and the measurement procedure are described is installed as the software 32A shown in FIG. 1, the program execution unit 106 shown in FIG. Can be run.

  The CAD data acquisition unit 110 acquires CAD data. CAD data is design information that can specify the structure of the measurement target, such as the outer dimensions of the measurement target, the position of the structure, the size of the structure, and the like. Note that CAD is an abbreviation for computer aided design, which stands for computer aided design. Various modes such as acquisition via a network and reading from a storage medium such as a memory card or a CD-ROM can be applied to the acquisition of CAD data. Acquisition of these CAD data is one mode of acquisition of design information in the target measurement position acquisition unit.

  The CAD data of the measurement object acquired using the CAD data acquisition unit 110 is stored in the CAD data storage unit 112. The storage of the CAD data here does not matter the storage format of the CAD data. For example, the CAD data may be stored in the same format as when it was created, or may be stored after being converted into another format. The reading of the CAD data stored in the CAD data storage unit 112 is one mode of design information acquisition in the target measurement position acquisition unit.

  The target measurement position deriving unit 114 derives a target measurement position for each measurement element in the measurement object from the CAD data of the measurement object stored in the CAD data storage unit 112. Here, the measurement element is a structure such as a hole, a convex portion, or a groove formed in the measurement object. The measuring element may include the outer shape of the measuring object. Usually, one measuring object includes a plurality of measuring elements. Further, one measurement element includes a plurality of target measurement positions.

  Further, the target measurement position is a position corresponding to the design value described in the CAD data of the measurement object. In the present embodiment, the coordinate value of the work coordinate system in the coordinate measuring machine 10 shown in FIG. 1 is applied as the index indicating the target measurement position.

  The number of target measurement positions included in one measurement element is appropriately determined according to the measurement accuracy, the shape of the measurement element, or the like. In the following description, it is assumed that one measurement target includes a plurality of measurement elements, and one measurement element includes a plurality of target measurement positions. Hereinafter, the target measurement position may be described as a target measurement position.

  The target measurement position setting unit 116 sequentially sets a plurality of target measurement positions derived by using the target measurement position deriving unit 114 on the basis of a predetermined measurement sequence as target measurement positions of the measurement target. That is, the target measurement position setting unit 116 sets the measurement order for the unmeasured measurement positions. Specifically, the measurement order of the measurement elements is set, and further, the measurement position of the measurement target is set for each measurement element.

  The functions of the target measurement position deriving unit 114 and the target measurement position setting unit 116 can be realized as the part program described above.

  The probe position acquisition unit 120 acquires the actual position of the probe 24 as a measurement value via the controller 28. Note that the actual position of the probe 24 may be referred to as the center position of the slitus.

  Note that, hereinafter, when simply described as the position of the probe 24 or the position of the probe, it is the position of the actual probe 24.

  The output value of the linear scale 121 is applied to the position of the probe 24. The linear scale 121 shown in FIG. 2 includes the linear scale for detecting the X-axis direction position, the linear scale for detecting the Y-axis direction position, and the linear scale for detecting the Z-axis direction position described above.

  That is, as the measurement value of the position of the probe 24, the coordinate value of the work coordinate system in the coordinate measuring machine 10 shown in FIG. 1 is applied.

  The linear scale 121 shown in FIG. 2 outputs a detection signal indicating the coordinate value of the probe 24 in the X-axis direction, a detection signal indicating the coordinate value of the Y-axis direction, and a detection signal indicating the coordinate value of the Z-axis direction. It

  The calculation unit 122 calculates difference information representing the distance between the measured value of the position of the probe 24 acquired by the probe position acquisition unit 120 and the target measurement position set by the target measurement position setting unit 116. To do. The coordinate information of the work coordinate system can be applied to the difference information calculated using the calculation unit 122.

Letting (X, Y, Z) be the measured values of the coordinate values representing the position of the probe 24 and (X _n , Y _n , Z _n ) being the coordinate values of the target measured position, the coordinate difference of each axis representing the difference information. (ΔX, ΔY, ΔZ) is expressed as ΔX=X−X _n , ΔY=Y−Y _n , and ΔZ=Z−Z _n . Here, n is a positive integer representing the number of the measurement position.

  The display control unit 124 converts various information displayed on the display unit 34 into a format suitable for the display format of the display unit 34. The coordinate difference (ΔX, ΔY, ΔZ) of each axis calculated using the calculation unit 122 can be displayed on the display unit 34 as difference information. Further, the display control unit 124 can display the target measurement position on the display unit 34.

  The display unit 34 is a component of the notification unit that notifies the notification information, and corresponds to a mode in which the notification information is visually displayed.

  In FIG. 2, the information processing unit 100 has been described as a component for each function. The information processing unit 100 shown in FIG. 2 can be configured using a CPU, various processors, memories, and peripheral circuits. Further, the function of each component may be realized by interposing software. CPU is an abbreviation for Central Processing Unit, which represents a central processing unit.

  The CAD data acquisition unit 110 shown in FIG. 2 is a component of the target measurement position acquisition unit. CAD data is one aspect of design information of a measurement object. The target measurement position deriving unit 114 is a component of the target measurement position acquisition unit that derives the coordinate value of the target measurement position.

  The calculation unit 122 is an aspect of the notification unit that derives the coordinate difference value as notification information. The display unit 34 and the display control unit 124 are components of the notification unit.

[Explanation of measurement procedure]
FIG. 3 is a flowchart showing a procedure flow of a measuring method applied to the coordinate measuring machine shown in FIG. In the measurement method shown in the present embodiment, the target measurement position setting step S10, the manual measurement step S12, the measurement value determination step S14, and the measurement completion determination step S16 are executed for each measurement position, and all the predetermined measurements are performed. These steps are repeated until a measurement is determined for the position.

  In the target measurement position setting step S10 shown in FIG. 3, the target measurement position of the measurement position of the measurement target is set based on the CAD data and the measurement sequence. The target measurement position setting step S10 is executed by the target measurement position setting unit 116 shown in FIG.

  The step of acquiring the CAD data in the target measurement position setting step S10 is a component of the target measurement position acquisition step. The step of reading the part program instead of the step of acquiring the CAD data or the step of creating the part program is one aspect of the target measurement position acquisition process.

  In the manual measurement step S12 of FIG. 3, the measurement value at the measurement position of the measurement target is acquired manually. In the manual measurement step S12, the difference information display is executed as the notification information display that assists the manual measurement performed by the operator. Details of the difference information display will be described later.

  In the measurement value determination step S14, the measurement value at the measurement position of the measurement target is determined. The measurement value determination step S14 is executed by the probe position acquisition unit 120 and the calculation unit 122 illustrated in FIG.

  In the measurement completion determination step S16 of FIG. 3, it is determined whether or not all the measurements have been completed. When it is determined that all the measurements are completed, which is the YES determination in the measurement completion determination step S16, the measurement is completed.

  On the other hand, when it is determined that the measurement completion determination step S16 is NO, that is, it is determined that all the measurements are not completed, the process returns to the target measurement position setting step S10, and the next measurement target measurement position is set. After that, the manual measurement step S12, the measurement value determination step S14, and the measurement completion determination step S16 are repeatedly executed.

  The measurement completion determination step S16 is executed by the control unit 102 shown in FIG. In the process in which the program intervenes in the measuring method of FIG. 3, the program execution unit 106 shown in FIG. 2 intervenes in the execution of the process.

  FIG. 4 is a flowchart showing the flow of the procedure for displaying the difference information. The difference information display shown in FIG. 4 is a component of the notification process. The difference information display includes a probe position acquisition step S20, a coordinate difference calculation step S22, and a coordinate difference display step S24.

  In the probe position acquisition step S20, the measurement value of the position of the probe 24 shown in FIG. 1 is acquired in real time. That is, in the probe position acquisition step S20 of FIG. 4, the output value of the linear scale 121 shown in FIG. 2, which is the coordinate value in the work coordinate system of the probe 24 shown in FIG. 1, is acquired.

  In the coordinate difference calculating step S22, the target measurement position setting step S10 of FIG. 3 is calculated from the coordinate value of the work coordinate system showing the position of the probe 24 shown in FIG. 1, which is the measurement value acquired in the probe position acquisition step S20. The coordinate value of the work coordinate system representing the target measurement position set in step 1 is subtracted, and the coordinate difference between the position of the probe 24 and the target measurement position is calculated.

  In the coordinate difference display step S24, the coordinate difference calculated in the coordinate difference calculation step S22 is displayed on the display unit 34 shown in FIG. The operator can recognize that the position of the probe 24 is approaching the target measurement position by looking at the coordinate difference displayed on the display unit 34.

  It is preferable that the coordinate difference displayed on the display unit 34 is updated in real time as in the acquisition of the measurement value indicating the position of the probe 24. The real time here means that the acquisition of the measurement coordinate value, the calculation of the coordinate difference, and the display of the coordinate difference are continuously executed in time, and the display of the coordinate difference is sequentially updated. The interval of the acquisition period and the interval of the update period of the display of the coordinate difference do not have to be constant.

  The coordinate difference calculation step S22 shown in FIG. 4 is a component of the notification step. The coordinate difference display step S24 is a component of the notification step.

[Specific example of difference information display]
FIG. 5 is an explanatory diagram of difference information display in the coordinate measuring machine shown in FIG. FIG. 5 schematically shows the display screen 200 of the display unit 34 shown in FIG.

  The display screen 200 shown in FIG. 5 includes a difference information display area 202. The dashed-dotted line indicating the difference information display area 202 shown in FIG. 5 is not displayed on the actual display screen 200.

  The difference information display area 202 includes a numerical value display area 204 in which the difference values in the X-axis direction, the Y-axis direction, and the Z-axis direction are displayed using numerical values. Further, the difference information display area 202 includes a level meter display area 206 in which the difference values in the X axis direction, the Y axis direction, and the Z axis direction are displayed in the level meter format.

  FIG. 5 shows a mode in which numerical values up to the fourth decimal place are displayed in the numerical display area 204, but the numerical values in the numerical display area 204 are changed according to the measurement object and the required measurement accuracy. The display range of can be set.

  In addition, in FIG. 5, the level meter display area 206 is illustrated with ten levels of level meters for each of positive and negative. However, the display range of the level meter display area 206 depends on the object to be measured and the required measurement accuracy. Is configurable.

  The display range of the numerical value display area 204 and the level meter display area 206 shown in FIG. 5 may be manually set by the operator, or automatically set based on information such as design information of the measurement object. May be done.

  The display screen 200 shown in FIG. 5 includes a measurement target measurement element information display area 208 in which the information of the measurement target measurement element is displayed. In the measurement target measurement element information display area 208 shown in FIG. 5, the constituent element named Circle_1 is displayed.

  The display screen 200 shown in FIG. 5 includes a target measurement position information display section 210 on which the target measurement position is displayed. The target measurement position information display unit 210 shown in FIG. 5 displays the coordinate values of the target measurement position in the work coordinate system in the X-axis direction, the Y-axis direction, and the Z-axis direction. The coordinate value of each axis shown in the target measurement position information display section 210 shown in FIG. 5 is an arbitrary numerical value, not a numerical value representing a specific target measurement position.

  FIG. 5 shows the display screen 200 including both the numerical value display area 204 and the level meter display area 206. The display screen 200 is a numerical value display area as a difference information display area in which difference information is displayed. It is sufficient that at least one of the area 204 and the level meter display area 206 is included.

  In the display screen 200, at least one of the measurement target measurement element information display area 208 and the target measurement position information display unit 210 may be omitted.

  The numerical value displayed in the numerical value display area 204 shown in FIG. 5 is one mode of character information.

[Operation and effect of the first embodiment]
According to the coordinate measuring machine and the measuring method configured as described above, when the measurement target is manually operated, the actual position of the probe 24 approaches the target measurement value at the measurement position of the measurement target. The coordinate difference between the coordinate value of the target measurement position and the coordinate value indicating the position of the probe in the work coordinate system is displayed as the notification information indicating that the probe coordinate is present.

  The operator can visually recognize that the actual position of the probe 24 is approaching the target measurement position at the measurement position of the measurement target. Then, probing at a position deviating from the target measurement position can be prevented in advance.

  As another mode in which the notification information is visually displayed, there is a mode in which light sources of different colors are used and the difference in color indicates that the measurement position of the measurement target is approaching the target measurement position.

  For example, when the actual position of the probe 24 is far away from the target measurement position at the measurement position of the measurement target, the red light source is turned on, and the actual position of the probe 24 becomes the target measurement position at the measurement position of the measurement target. Accordingly, it is possible to change the color of the light source to yellow or green.

[Explanation of part program]
The coordinate measuring machine 10 shown in the present embodiment can use the design information of the measurement object included in the part program during the manual measurement.

  Here, the part program is a program in which coordinate values for each measurement position, a measurement order of the measurement positions, and the like are described, and is mainly applied to automatic measurement in an automatic measurement type three-dimensional measuring machine.

  The automatic measuring type CMM measures the coordinate value for each measurement position described in the part program and the probe automatically moves according to the measurement order of the measurement position, and measures the coordinate value indicating the probe position at each measurement position. It is automatically acquired as a value.

  The coordinate measuring machine 10 shown in the present embodiment, when the part program for the automatic measuring type coordinate measuring machine is prepared in advance for the object to be measured, coordinates for each measurement position described in the part program. The value is used as the coordinate value of the target measurement position.

  FIG. 6 is an explanatory diagram of an example of the part program. FIG. 6 schematically shows the part program. FIG. 6 exemplifies a part program in which information on four measurement positions during circle measurement and information on three measurement positions during plane measurement are described.

  In the part program shown in FIG. 6, the measurement position is described using the coordinate values of the work coordinate system indicated by X, Y, and Z. The part program shown in FIG. 6 uses I, J, and K to describe the probing vector that is the moving direction when the probe 24 shown in FIG. 1 contacts the measurement point. In L, information for issuing a warning such as a displacement distance, speed, acceleration, or a contact angle may be described as a numerical value.

  The part program can be generated in the information processing unit 100 shown in FIG. When the part program is generated in the information processing unit 100 shown in FIG. 2, the generation of the probing vector I, the probing vector J, the probing vector K, and the information L can be omitted.

  When a part program is created in advance outside the coordinate measuring machine, a part program acquisition unit is provided instead of the CAD data acquisition unit 110 shown in FIG. Further, a part program storage unit is provided instead of the CAD data storage unit 112.

[Setting of work coordinate system]
Next, setting of the work coordinate system in the coordinate measuring machine will be described with reference to FIGS. 7 to 9. Generally, when measuring a work that is an object to be measured, a work coordinate system that is a reference suitable for the work is set.

  The setting of the work coordinate system is roughly classified into space correction, origin setting, and reference axis setting. The space correction, the origin setting, and the reference axis setting will be described below in this order.

FIG. 7 is an explanatory diagram of the spatial correction. In the spatial correction, first, an arbitrary plane 400 on the measurement object is measured. The measurement of the plane 400 determines the intersection point 402 of the plane 400 and the Z ₀ axis and the normal vector 404 of the plane 400.

Next, the normal vector 404 of the plane 400 and the Z axis are made parallel. Then, the X ₀ Y ₀ Z ₀ coordinate system illustrated by using the solid line in FIG. 7 is corrected to the X ₁ Y ₁ Z ₁ coordinate system illustrated by using the broken line. The process of correcting the X ₀ Y ₀ Z ₀ coordinate system to the X ₁ Y ₁ Z ₁ coordinate system is called spatial correction.

Then, the origin 406 is moved in parallel to the intersection point 402. Then, the X ₁ Y ₁ Z ₁ coordinate system is the X ₂ Y ₂ Z ₂ coordinate system illustrated by using the long dashed line. Through the above processing, the Z-axis direction of the work coordinate system and the origin of the work coordinate system are determined.

  FIG. 8 is an explanatory diagram of the origin setting. In setting the origin, first, the hole 410 is measured. The measurement of the hole 410 determines the center 412 of the hole 410. The origin 406 is translated to the center 412 of the hole 410.

Then, the X ₂ Y ₂ Z ₂ coordinate system illustrated by using the solid line in FIG. 8 is corrected to the X ₃ Y ₃ Z ₃ coordinate system illustrated by using the broken line. Through the above process, the origin of the XY axes in the workpiece coordinate system is determined as the origin of the X ₃ Y ₃ Z ₃ coordinate system.

FIG. 9 is an explanatory diagram of setting the reference axis. In the reference axis setting, the hole 420 is first measured. By measuring the hole 420, the center 422 of the hole 420 is determined. Next, _{X 3} axis rotates the _{X 3} axis to a position passing through the center 422 of the hole 420. α represents the angle by which the X ₃ axis is rotated.

Then, the X ₃ Y ₃ coordinate system shown by using the solid line is corrected to the X ₄ Y ₄ coordinate system shown by using the broken line. Through the above processing, the X ₄ Y ₄ coordinate system of FIG. 9 is determined as the direction of the XY axes of the work coordinate system.

That is, after the space correction, the origin setting, and the reference axis setting, the X ₄ axis shown in FIG. 9 is set as the X axis of the work coordinate system. The Y ₄ axis shown in FIG. 9 is the Y axis of the work coordinate system. The Z ₃ axis shown in FIG. 8 is the Z axis of the work coordinate system.

  The method for setting the work coordinate system described here is an example, and as the method for setting the work coordinate system, a known method applicable to a coordinate measuring machine can be applied.

[Second embodiment]
Next, a coordinate measuring machine according to the second embodiment will be described. In the description of the second embodiment, differences from the first embodiment will be mainly described, and descriptions of points common to the first embodiment will be appropriately omitted.

  FIG. 10 is an explanatory diagram of target measurement position display in the coordinate measuring machine according to the second embodiment. The display screen 300 shown in FIG. 10 includes a measurement element position information column 302 that represents the position information of the measurement element. The dashed-dotted line representing the measurement element position information field 302 is not displayed on the actual display screen 300.

  The measurement element position information column 302 shown in FIG. 10 visually displays the position information of the measurement elements 304 and 306. Further, in the measurement element position information column 302, position information of the measurement element 304 and the measurement element 306 is three-dimensionally displayed. That is, in the measurement element position information column 302, the X-axis direction, the Y-axis direction, and the Z-axis direction are displayed in the axial direction display area 308.

  In the measurement element position information field 302 shown in FIG. 10, the target measurement position 310 and the coordinate value 312 of the target measurement position are displayed over the measurement element 304. The points labeled 314 and 316 on the measuring element 304 are the measured measurement positions on the measuring element 304.

  Further, a point denoted by reference numeral 318, and a point illustrated by using a broken line is a measurement position of the next measurement target. The measurement position 320, the measurement position 322, the measurement position 324, and the measurement position 326 that are displayed overlaid on the measurement element 306 are unmeasured measurement positions of the measurement element 306.

  Note that Circle_1 shown in FIG. 10 is the name of the measurement element 304. Further, Circle_2 shown in FIG. 10 is the name of the measurement element 306. 10 illustrates a mode in which the measurement element 304 that is the measurement element of the measurement target and the measurement element 306 that is the measurement element of the next measurement target are displayed. However, the measurement element displayed on the display screen 300 is Alternatively, only the measurement element 304 to be measured may be used.

  The target measurement position derivation unit 114 that derives the target measurement position in the second embodiment is a component of the target measurement position acquisition unit. The display unit on which the display screen 300 shown in FIG. 10 is displayed is a component of the notification unit.

[Operation and Effect of Second Embodiment]
According to the second embodiment, the measuring element position information column 302 displays the measuring element 304 of the measuring object three-dimensionally, and the target measuring position 310 of the measuring object is superimposed and displayed on the measuring element 304 of the measuring object.

  By looking at the display screen 300, the operator can visually recognize that the position of the probe 24 shown in FIG. 1 is approaching the measurement position of the measurement target. Then, probing a position deviating from the target measurement position is prevented in advance.

  It is preferable to create a display screen that is a combination of the display screen 200 shown in the first embodiment and the display screen 300 shown in the second embodiment. That is, it is preferable that, as the notification information, the difference information obtained by subtracting the target measurement position from the position of the probe 24 is notified and the target measurement position is notified.

  Further, either one or both of the display of the difference information and the display of the target measurement position may be selectively performed.

[Third embodiment]
Next, a coordinate measuring machine according to the third embodiment will be described. In the description of the third embodiment, differences from the first embodiment will be mainly described, and descriptions of points common to the first embodiment will be appropriately omitted.

  FIG. 11 is an overall configuration diagram of the coordinate measuring machine according to the third embodiment. The coordinate measuring machine 10A shown in FIG. 11 includes a speaker 500 that audibly informs notification information indicating that the probe 24 manually operated by the operator is approaching the measurement position of the measurement target. The speaker 500 shown in FIG. 11 is one mode of an audio output unit.

  FIG. 12 is a block diagram of an information processing unit of the coordinate measuring machine shown in FIG. The information processing unit 520 shown in FIG. 12 has a voice control unit 524 added to the information processing unit 100 shown in FIG.

  Further, the calculation unit 522 provided in the information processing unit 520 uses the coordinate difference ΔX in the X-axis direction, the coordinate difference ΔY in the Y-axis direction, and the coordinate difference ΔZ in the Z-axis direction to determine the position of the probe 24 and the target measurement position. The distance ΔD between and is calculated.

The distance ΔD between the position of the probe 24 and the target measurement position is expressed as ΔD=(ΔX ² +ΔY ² +ΔZ ² ) ^1/2 .

  Then, the calculation unit 522 divides the distance ΔD between the position of the probe 24 and the target measurement position by the predetermined distance D, and multiplies the value calculated by the division by 100 to calculate the ratio β. The ratio β is expressed as β=(ΔD/D)×100. The unit of β is percent.

  The predetermined distance D can be set according to the measurement object and the required measurement accuracy. For example, the predetermined distance D can be the display range of the level meter shown in FIG.

  The voice control unit 524 changes the output mode of the sound information according to β calculated using the calculation unit 522. Table 1 below shows the relationship between β and the output form of sound information.

  The output mode of the sound information shown in Table 1 above is as follows.

  When the position of the probe 24 is far away from the target measurement position at the measurement position of the measurement target, the sound information is not output. In Table 1 above, the case where the position of the probe 24 is far away from the target measurement position at the measurement position of the measurement target, and the case where it exceeds a predetermined distance D is shown.

  When the position of the probe 24 approaches the target measurement position at the measurement position of the measurement target, sound is intermittently output. Then, as the position of the probe 24 approaches the target measurement position in the measurement position of the measurement target, the sound output interval becomes shorter.

  Table 1 above shows a mode in which sound information is intermittently output when the distance between the position of the probe 24 and the target measurement position at the measurement position of the measurement target becomes equal to or less than a predetermined distance D.

  In Table 1 above, when the distance between the position of the probe 24 and the target measurement position at the measurement position of the measurement target is 75% or less of the predetermined distance D, the output interval of the sound information becomes relatively short. It is shown.

  In Table 1 above, when the distance between the position of the probe 24 and the target measurement position at the measurement position of the measurement target becomes 50% or less of the predetermined distance D, the output interval of the sound information becomes relatively shorter. It is shown.

  Table 1 above shows a mode in which sound information is continuously output when the distance between the position of the probe 24 and the target measurement position at the measurement position of the measurement target is 25% or less of the predetermined distance D. ing. Further, in Table 1 above, when β has a negative value, the output interval of the sound information is increased stepwise as the value of β decreases, and when the absolute value of β exceeds the distance D, the sound information of The manner in which the output is stopped is shown.

  The output form of the sound information shown in Table 1 is an example, and as the sound information, a form in which the type of sound is changed according to the value of β, a form in which the numerical value of β is output using voice, or the like can be applied. . The calculation unit 522 illustrated in FIG. 12 is an aspect of the sound conversion unit.

[Operation and Effect of Third Embodiment]
According to the third embodiment, when the measurement target is manually operated, the sound information is used as the notification information indicating that the actual position of the probe 24 approaches the target measurement value at the measurement position of the measurement target. Is output.

  The operator can audibly understand that the actual position of the probe 24 is approaching the target measurement position at the measurement position of the measurement target. Then, probing at a position deviating from the target measurement position can be prevented in advance.

  The third embodiment can be combined with at least one of the first embodiment and the second embodiment. That is, the notification information visually displayed as the notification information and the notification information visually recognized may be used together.

  Further, one or both of the visually displayed notification information and the auditory recognized notification information may be selectively applied.

[Description of Other Aspects of Manually Operated Coordinate Measuring Machine]
<Aspect equipped with operation section>
FIG. 13 is an explanatory view of another aspect of the manually operated coordinate measuring machine. The coordinate measuring machine 10B shown in FIG. 13 includes an operation unit 600. The operation unit 600 includes operation members such as a joystick 602, operation buttons 604, and knobs 606.

  The operation unit 600 is communicatively connected to the controller 628. When the operation member of the operation unit 600 is operated, a command signal is sent from the operation unit 600 to the controller 628. The controller 628 operates the portal frame 26, the X carriage 20, and the Z carriage 22 in accordance with the command signal to move the probe 24 to the measurement position of the measurement target.

  Communication between the operation unit 600 and the controller 628 may be wired or wireless. The operation unit 600 and the controller 628 may be connected via a network.

  The controller 628 shown in FIG. 13 has the functions of both the operation controller that processes the control signal of the operation unit 600 and the signal processing controller that includes the information processing unit 100 shown in FIG. .

  As the controller 628 shown in FIG. 13, an operation control controller that processes a control signal of the operation unit 600 and a signal processing controller including the information processing unit 100 shown in FIG. 1 may be separated. is there.

<Multi-joint type>
FIG. 14 is an explanatory diagram of another aspect of the manually operated coordinate measuring machine. The coordinate measuring machine 10C shown in FIG. 14 is an articulated coordinate measuring machine.

  The coordinate measuring machine 10C shown in FIG. 14 has a structure in which the probe 24 is attached to a third arm 714 which is an end arm of a plurality of arms connected in series using a plurality of joints. .

  In the coordinate measuring machine 10C shown in FIG. 14, the first joint 702 is attached to the base 700. A second joint 704 is rotatably attached to the first joint 702.

  The base end 706A of the first arm 706 is attached to the second joint 704. The first arm 706 is rotatably attached to the second joint 704. A third joint 708 is attached to the tip 706B of the first arm 706.

  The base end 710A of the second arm 710 is attached to the third joint 708. The second arm 710 is rotatably attached to the third joint 708. A fourth joint 712 is attached to the tip 710B of the second arm 710.

  The base 714A of the third arm 714 is attached to the fourth joint 712. The third arm 714 is rotatably attached to the fourth joint 712. A fifth joint 716 is rotatably attached to the tip 714B of the third arm 714. The probe 24 is attached to the tip 716A of the fifth joint 716.

  The coordinate measuring machine 10C shown in FIG. 14 can three-dimensionally move the probe 24 attached to the tip 716A of the fifth joint 716 by appropriately rotating a plurality of joints.

  That is, the manual operation-type three-dimensional measuring machine, if the probe is configured to be movable three-dimensionally by an operation manually by an operator or an operation using an operation unit, the support structure of the probe, the probe The mode of movement is not limited.

  In the coordinate measuring machine 10C shown in FIG. 14, the operator may move the probe 24 by grasping the fifth joint 716 or the like by hand. The coordinate measuring machine 10C illustrated in FIG. 14 may include the operation unit 600 illustrated in FIG. 13, and the operator may operate the operation unit 600 to move the probe 24.

  Any of the first embodiment, the second embodiment, and the third embodiment may be applied to the coordinate measuring machine 10B shown in FIG. 13 and the coordinate measuring machine 10C shown in FIG.

[Other modifications]
Although the display unit 34 connected to the computer 32 by wire is illustrated in FIGS. 1 and 11, a portable terminal device can be applied as the display unit.

Further, a touch panel type display device may be applied to the display unit 34 shown in FIG. 1 or FIG. 11, and the function of the operation unit 600 shown in FIG. 13 may be mounted on the display unit.

  In the embodiment of the present invention described above, it is possible to appropriately change, add, or delete the constituent features without departing from the spirit of the present invention. The present invention is not limited to the embodiments described above, and many modifications can be made by a person having ordinary knowledge in the field within the technical idea of the present invention.

[Example of application to program invention]
A program for causing a computer to realize the functions of the respective parts of the coordinate measuring machine can be created corresponding to the respective parts of the coordinate measuring machine described above.

  That is, the computer is a probe position acquisition unit that acquires the position of the probe, and a target measurement position that is a target measurement position at the measurement position of the measurement target and that is determined based on the design information of the measurement target. The position of the probe approaches the target measurement position according to the distance between the acquisition unit and the position of the probe acquired using the probe position acquisition unit, and the target measurement position acquired using the target measurement position acquisition unit. It is possible to configure a measurement program that functions as an informing means for informing the informing information informing that the information is being transmitted.

  The probe position acquisition unit 120 shown in FIG. 2 is an aspect of probe position acquisition means. The CAD data acquisition unit 110 is a component of the target measurement position acquisition means. The target measurement position deriving unit 114 is a component of the target measurement position acquisition means. The display unit 34 and the display control unit 124 are components of the notification means.

  Further, it is possible to configure a measurement program that causes a computer to function as a unit corresponding to each unit of the coordinate measuring machine shown in the first to third embodiments.

  10, 10A, 10B, 10C... Coordinate measuring machine, 24... Probe, 28... Controller, 32... Computer, 34... Display unit, 100... Information processing unit, 110... CAD data acquisition unit, 114... Target measurement position deriving unit , 116... Target measurement position setting unit, 120... Probe position acquisition unit, 122, 522... Calculation unit, 124... Display control unit, 200, 300... Display screen, 500... Speaker, 524... Voice control unit

Claims (14)

A measurement unit including a probe that is manually operated when measuring the measurement object,
A probe position acquisition unit for acquiring the position of the probe,
A target measurement position at the measurement position of the measurement target, and a target measurement position acquisition unit that acquires a target measurement position determined based on design information of the measurement target,
According to the distance between the position of the probe acquired using the probe position acquisition unit and the target measurement position acquired using the target measurement position acquisition unit, the position of the probe approaches the target measurement position. A notification unit for notifying that notification information is present,
Equipped with
The notification unit includes a display unit that visually displays the notification information, and the display unit displays a measured position, a target measurement position, and an unmeasured measurement position . The probe position acquisition unit, as the position of the probe, acquires the coordinate value of the probe in the workpiece coordinate system with the measurement object as a reference,
The notification unit derives the coordinate value of the target measurement position in the work coordinate system from the design information of the measurement target as the target measurement position, and, as the notification information, the coordinate value of the target measurement position from the probe. The coordinate measuring machine according to claim 1, wherein the coordinate difference value calculated by subtracting the coordinate value of the position is derived.   From the design information of the measurement target as the target measurement position, the notification unit derives the coordinate value of the target measurement position in the work coordinate system with the measurement target as a reference, and the target in the derived work coordinate system. The coordinate measuring machine according to claim 1 or 2, which notifies the coordinate value of the measurement position. The coordinate measuring machine according to any one of claims 1 to 3, wherein the display unit displays the notification information by using character information. Wherein the display unit, the coordinate measuring machine according to any one of 4 claims 1 to display the notification information by using a level meter. The coordinate measuring machine according to any one of claims 1 to 5, wherein the display unit displays an unmeasured position in an unmeasured measuring element in the measurement object. The notification unit, a sound conversion unit for converting the notification information into sound information,
A sound output unit for outputting the notification information converted into sound information by the sound conversion unit,
The coordinate measuring machine according to any one of claims 1 to 6 , further comprising: The coordinate measuring machine according to claim 7, wherein the sound converting unit converts the notification information into sound information that changes an output mode according to a distance from the position of the probe to the target measurement position. 9. The sound conversion unit converts the notification information into the sound information having a period corresponding to a distance from the position of the probe to the target measurement position, and intermittently outputting the sound information. Coordinate measuring machine described. The three-dimensional sound according to claim 9, wherein the sound conversion unit converts the notification information into the sound information in which the period is relatively short when the distance from the position of the probe to the target measurement position is relatively short. Measuring machine. 9. The coordinate measuring machine according to claim 8, wherein the sound converting unit converts the notification information into the sound information of which type is changed according to a distance from the position of the probe to the target measurement position. The three-dimensional measuring machine according to claim 8, wherein the sound conversion unit converts the notification information into sound representing the distance from the position of the probe to the target measurement position as the sound information. A measuring method in a coordinate measuring machine for measuring an object to be measured using a manually operated probe,
A probe position acquisition step of acquiring the position of the probe,
A target measurement position at the measurement position of the measurement target, and a target measurement position acquisition step of acquiring a target measurement position determined based on design information of the measurement target,
Informing that the position of the probe is approaching the target measurement position according to the distance between the position of the probe acquired in the probe position acquisition process and the target measurement position acquired in the target measurement position acquisition process A notification step of notifying notification information,
Including ,
The said notification process is a measuring method which displays the measured measurement position, the said target measurement position, and an unmeasured measurement position using the display part which visually displays the said notification information . A measurement program in a coordinate measuring machine for measuring an object to be measured using a manually operated probe,
A computer, a probe position acquisition means for acquiring the position of the probe,
A target measurement position at the measurement position of the measurement target, a target measurement position acquisition unit that acquires a target measurement position determined based on design information of the measurement target, and a probe acquired by using the probe position acquisition unit. the position of, in accordance with the distance between the target measurement position obtained using the target measuring position obtaining unit, a broadcast means the position of the probe to inform the notification information indicating that it is approaching the target measuring position A measurement program that functions as a notification unit that displays a measured measurement position, the target measurement position, and an unmeasured measurement position using a display unit that visually displays the notification information .

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