JP6848106B2 - Manual measuring device - Google Patents

Description

The present invention relates to a manual measuring device, and more particularly to a manual measuring device in which a measuring probe is manually moved, which is suitable for use in a manual coordinate measuring machine.

As illustrated by the articulated coordinate measuring machine 20 in FIG. 1, a manual coordinate in which the measuring probe 24 arranged at the tip of the arm mechanism 22 is manually moved as described in Patent Document 1. The measuring machine is a system that measures the work W with the measuring probe 24 in contact or non-contact while referring to the design information and the measurement conditions displayed on the display 32 of the desktop computer 30 (or the dedicated electrical equipment). In the figure, reference numeral 26 denotes a tripod stand for installing the articulated coordinate measuring machine 20.

In such a system, the measurer U confirms the position on the work W that he / she must measure on the display 32 of the desktop computer 30, and measures the position by comparing with the actual position of the work W. That is, each time the measurement is performed, the measurer U repeats the operation of alternately viewing the display 32 and the work W. Depending on the size of the work W and the measurement situation, the display 32 may not be directly visible. Originally, it should be more efficient and reliable for the measurer U to measure without looking away from the work W each time, but in this system, the measurer U should display the desktop computer 30. A major drawback is that it is premised on directing the line of sight to 32.

FIG. 2 is an example of being connected to a notebook computer (notebook computer) 34. In this case, it can be installed near the work W, which is better than the desktop computer, and it is easier to check the display while measuring, but it is still easier to check the display while measuring, but in most cases, to take a look away, the measurement is performed. You must interrupt and check the displayed contents. Further, depending on the size of the work W and the measurement environment, even the notebook computer 34 cannot be placed nearby, and therefore the display may not be directly visible, which has the same problem as that of the desktop computer.

In addition, Patent Document 2 describes that an electrical component portion provided with an openable / closable display is provided near the base of the joint arm coordinate measuring machine.

Further, Patent Document 3 describes that a screen capable of displaying text is provided at the tip of the arm.

Japanese Unexamined Patent Publication No. 2007-47014 Special Table 2013-517504 U.S. Pat. No. 6,131,299

However, even in the technique described in Patent Document 3, since the text screen is attached to the tip of the arm, it is not possible to perform appropriate navigation and measurement instructions.

Further, for example, an inspection gauge / inspection jig for automobile parts measures a designated point, but as illustrated in FIG. 3, the measurer does not know the actual position on the work W, and is an articulated three-dimensional structure. There was a problem that it was difficult to measure a specified point with a measuring machine.

The present invention has been made to solve the conventional problem. In a manual measuring device in which a measuring probe is manually moved, a sub monitor mounted near the tip of the measuring probe is provided, and the sub monitor is provided. The problem is solved by having a function of displaying the navigation direction based on the direction vector of the measurement probe and a function of displaying a design drawing of a position pointed to by the direction vector in real time.

Here, the sub-monitor can have a function of displaying an induction route to a measurement point of the measurement probe.

Further, the sub monitor can have a function of displaying that the measurement probe has entered the measurement allowable range.

Further, the sub monitor can have a function of instructing acquisition of a measured value by the measuring probe.

Further, the sub monitor has a function of displaying a designated point for measurement on the design drawing, and can trace the vicinity of the designated point to acquire the coordinates of the passing point.

Further, the sub monitor has a camera function, and the image acquired by using the camera function can be enlarged / reduced.

Further, the sub monitor can be a touch panel display.

According to the present invention, even in a situation where the computer display cannot be directly seen, the measurer can perform the measurement work by making it possible to check the information of the control software at hand without losing the line of sight and without interrupting the measurement. You will be able to concentrate on.

Therefore, the following effects are obtained.

(1) Reduction of measurement time Since it is not necessary to interrupt the measurement and check the display in order to check the display contents of the control software, the measurement time can be significantly shortened.

(2) Improvement of measurement quality Since the measurement information can be confirmed in the same field of view as the work while holding the measurement probe, unnecessary operation is not required and the measurement can be concentrated, and as a result, the measurement quality can be improved. ..

(3) Reduction of measurement errors By displaying the guidance route to the measurement point on the sub monitor and navigating, measurement can be performed while comparing the actual measurement position on the workpiece with the navigation information displayed on the sub monitor, resulting in measurement errors. Can be expected to be reduced.

(4) Improvement of usability When the sub monitor is a touch panel display, the control software can be operated by the touch panel operation, so that most operations can be performed at hand, and the usability can be greatly improved.

(5) The result can be confirmed without operating the computer When confirming the measurement result of the work, the mouse of the computer etc. is conventionally operated (when the measurement is in progress, once the measurement probe is released and moved to the location of the computer). It was necessary to rotate / move / enlarge / reduce the work figure displayed on the screen so that the desired position can be seen. However, according to the present invention, the result is obtained on the sub monitor while holding the measurement probe. Can be confirmed.

(6) Design values can be confirmed while looking at the actual work The design values of each part of the work to be measured are conventionally checked by checking the CAD data displayed on the CAD drawing (paper) or the display screen, and the work in front of you. However, according to the present invention, by pointing the measurement probe at the part where the design value is to be confirmed, the measurement probe points to the measurement position. Since the design value can be displayed on the sub monitor, the measurer does not have to remember the design value.

(7) Effective when the computer display cannot be checked (difficult to check) In the case of a large work, the computer display is hidden behind the work and cannot be seen directly, or the display is too far away to check the displayed contents. In the past, the position of the computer had to be changed each time, or the measurement had to be interrupted and the measurer had to move to the location of the computer.However, according to the present invention, neither the computer nor the measurer needs to move. You can check the sub-monitor at hand, and in most cases you don't need to check it on the display directly connected to your computer.

(8) Control software can be operated at hand In most cases, control software must operate menus and the like with a mouse or keyboard. If the measuring machine is small and a laptop is nearby, you can hold the measuring probe with one hand and operate the computer with the other hand, but in most cases, take your hand off the measuring probe and use both hands. You have to operate your computer. When the computer is located far away, the measurer often moves, but if the sub monitor is a touch panel display, the control software can be operated with the touch panel of the sub monitor installed at hand. Usability can be greatly improved.

Perspective view showing an example of a state of measurement using a conventional articulated coordinate measuring machine and a desktop computer. Perspective view showing an example of a state of measurement using a conventional articulated coordinate measuring machine and a notebook computer. Perspective view for explaining conventional problems A perspective view showing the overall configuration of the first embodiment of the present invention. An enlarged perspective view showing the main part configuration as well. Side view also showing the link mechanism Similarly, a block diagram showing the configuration of the processing unit A perspective view showing an example of the measurement procedure as well. Perspective view showing the same action Perspective view which shows the whole structure of 2nd Embodiment of this invention. An enlarged perspective view showing the main part configuration as well. Perspective view which shows the whole structure of 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiments and examples. Further, the constituent requirements in the embodiments and examples described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those in a so-called equal range. Further, the components disclosed in the embodiments and examples described below may be appropriately combined or appropriately selected and used.

First, the configuration of the articulated coordinate measuring machine 20 according to the present embodiment will be described.

As shown in FIG. 4, the articulated coordinate measuring machine 20 has a measuring probe 24 and an articulated arm mechanism 22. The measuring probe 24 is for measuring the work W, and its tip (probe tip) has, for example, a ball shape. As shown in FIG. 4, the arm mechanism 22 supports the first arm 22C at the base 22A via the first joint 22B, and the first arm 22C supports the second arm 22E via the second joint 22D. The 2 arm 22E supports the arm head 22G via the 3rd joint 22F. The arm head 22G is the tip of the arm mechanism 22 and includes a measurement probe 24. The first joint 22B, the second joint 22D, and the third joint 22F are rotatable in axial directions orthogonal to each other, and have two built-in rotary encoders (not shown) capable of detecting the rotation angle. There is. That is, the axis of the arm mechanism 22 of the present embodiment is 6 axes (not limited to this, the axis of the arm mechanism 22 may be 7 axes or the like). It is possible to specify the position (coordinates) of the measurement probe 24 based on the outputs of all these encoders. The base 22A may be arranged directly on the workbench 10 or the like on which the work W is placed, or may be arranged via the tripod base 26.

When measuring the three-dimensional shape of the work W with such an articulated three-dimensional measuring machine 20, the measurer U grips and operates the grip 22H provided on the arm head 22G shown in FIGS. 4 and 5. The measurement probe 24 is manually moved. That is, the articulated coordinate measuring machine 20 has a passive configuration in which the shaft of the arm mechanism 22 does not have a drive source. Then, the measurer U can bring the measurement probe 24 closer to the work W from any direction and can bring it into contact with the work W at any angle. Then, the measurer U can switch the measurement of the work W on / off by operating a switch (not shown).

In the first embodiment of the present invention, the present invention is applied to the articulated coordinate measuring machine 20 as described above, and as shown in detail in FIG. 5, it is shown in FIG. 6 near the tip of the measuring probe 24. A mobile terminal (so-called smartphone) 40 having a touch panel display is attached as a sub monitor via a link mechanism 42 having a variable angle.

With the link mechanism 42, the measurer U can adjust the position and angle of the mobile terminal 40 at the time of measurement, and the visibility of the mobile terminal 40 and the measurement point is improved. The link mechanism 42 may be omitted.

The mobile terminal 40 is connected to a desktop computer or a notebook computer 34 by wired or wireless communication, and the measurement information transmitted from the control software on the notebook computer 34 can be displayed on the mobile terminal 40 as text data or graphic data. , Has a function to notify by sound or voice. In addition, it is also equipped with a function of transmitting the information input on the touch panel display of the mobile terminal 40 and the information input by voice recognition to the control software on the notebook computer 34, and the control software can be operated from the mobile terminal 40. It is possible.

For example, FIG. 7 shows the configuration of the processing unit 36 included in the notebook computer 34. As shown in detail in FIG. 7, the notebook computer 34 displays a processing unit 36 including a coordinate and vector generation unit 126, a data management unit 128, a work shape storage unit 130, a coordinate calculation unit 132, and a display control unit 136. A unit 38 is provided.

The coordinate and vector generation unit 126 generates the position (coordinates) of the tip of the measurement probe 24 from the output (encoder output) of the articulated coordinate measuring machine 20. At the same time, the direction vector of the tip of the measurement probe 24 (the direction in which the measurement probe 24 is facing) is generated.

The data management unit 128 processes a command from an input unit (not shown) or a mobile terminal 40, and gives various instructions to the work shape storage unit 130 and the display control unit 136 according to the command. Further, the data management unit 128 instructs the measurement conditions and the like by the measurement probe 24.

The work shape storage unit 130 stores design information DI such as the design shape of the work W to be measured and the design value itself obtained from the three-dimensional CAD data or the like. In the work shape storage unit 130, the design information DI is information on the coordinate system (work coordinate system) when the measurement probe 24 measures (that is, the work W stored in the work shape storage unit 130). The design information DI of the above is calibrated to the information on the work coordinate system by previously measuring a plurality of characteristic coordinates of the work W with the measurement probe 24). Further, the work shape storage unit 130 also stores information on the measured position including the measured value information of the work W output from the coordinate and vector generation unit 126. The data management unit 128 specifies the planned measurement position and design value of the work W from the design information DI of the work W.

The coordinate calculation unit 132 calculates the distance to the work W by the work shape storage unit 130 based on the coordinates and the position of the measurement probe 24 generated by the vector generation unit 126. Further, the coordinate calculation unit 132 calculates the navigation direction based on the coordinates and the direction vector of the measurement probe 24 generated by the vector generation unit 126, and displays the navigation direction on the display unit 38 or the display of the mobile terminal 40. To do.

Hereinafter, the navigation process for measuring the designated point will be described with reference to FIG.

First, in step 100, the designated point is displayed on the design drawing.

Then, in step 110, the design drawing of the position pointed to by the direction vector of the measurement probe 24 is displayed in real time.

Next, in step 120, the direction of arm movement to the designated point is displayed as a navigation on the mobile terminal 40.

Then, in step 130, when the measurement tolerance of the designated point is reached, the measurement is instructed.

In this way, as illustrated in FIG. 9, it is possible to trace the vicinity of the designated point until the coordinates of the designated point can be obtained, and to acquire the coordinates when passing through the designated point.

At this time, the voice input function of the mobile terminal 40 is used to link to the measurement position to record a comment, or the camera function is used to acquire an image, which is displayed on the display unit 38 of the notebook computer 34 or the mobile terminal 40. The display contents of the mobile terminal 40 can be changed depending on the position of the measurement probe 24 and the enlargement / reduction / zoom display.

Next, a second embodiment of the present invention mounted on a portal-type manual coordinate measuring machine will be described.

As shown in FIG. 10, the gate-type coordinate measuring machine 50 includes a table 52 on which the work W is placed and a gate-shaped frame 54 that is movable in the depth direction (Y direction) of the figure with respect to the table 52. The X-axis slider 56 is movable on the portal frame 54 in the left-right direction (X direction) in the figure, and the X-axis slider 56 is movable in the vertical direction (Z direction) in the figure. It has a Z-axis spindle 58 and a measuring probe 60 fixed to the tip (lower end of the figure) of the Z-axis spindle 58, and the measuring probe 60 is manually moved to measure the shape of the work W. ing.

A linear encoder (not shown) is built in the portal frame 54, the X-axis slider 56, and the Z-axis spindle 58 so as to detect positions and movement amounts in the X, Y, and Z-axis directions.

In the second embodiment of the present invention, in such a portal type coordinate measuring machine 50, as shown in detail in FIG. 11, a link mechanism 42 as shown in FIG. 6 is attached to a Z-axis spindle 58 in the vicinity of the measuring probe 60. The mobile terminal 40 is attached via the above. Since the operation related to the mobile terminal 40 is substantially the same as that of the first embodiment, detailed description thereof will be omitted.

In each of the above embodiments, since the smartphone is used as the sub monitor, the present invention can be easily and inexpensively implemented. The type of sub monitor is not limited to this. For example, it is possible to attach a small tablet PC.

Further, in each of the above-described embodiments, the mobile terminal 40 is connected to the notebook computer 34, but it may be connected to the server or the host computer via the cloud. In this case, the latest data can be downloaded.

Further, as a third embodiment, as shown in FIG. 12, the mobile terminal 40 can be attached to and detached from the measuring machines 20 and 50. In the figure, the FG is a common windshield to be measured. In this case, a plurality of measuring machines 20, 50, such as removing the mobile terminal 40 from one measuring machine (20 in the figure), attaching it to the other measuring machine (50 in the figure), and connecting it to the control PC of the measuring machine 50, etc. The mobile terminal 40 can be shared. If it is wireless, it can be connected / disconnected by simply attaching / detaching it (pairing operation is required for Bluetooth (registered trademark)), and one mobile terminal 40 can hold the state of multiple measuring devices 20 and 50. it can. For example, conventionally, in order to compare the measurement result of the measuring machine 20 and the measurement result of the measuring machine 50, each measurement result is printed by a printer and compared on paper, or the other measurement is performed on one of the control PCs. I had no choice but to copy the results, lay them out with document software, and print them. However, according to the present embodiment, the measurement results of both measuring machines 20 and 50 can be held in one mobile terminal 40 (at the same time as the measurement is completed), and the measurement result printing for comparison is also carried. This can be done from the terminal 40, and the convenience of the user can be greatly improved. In addition, the software used for measurement control can be customized with great flexibility, but when multiple users share one control PC for measurement, it is easy for each individual to use. It may not be possible (difficult) to customize it separately. However, according to the present embodiment, it is possible to customize and use the mobile terminal 40 owned by each individual without causing trouble to others, and it is possible to perform a more personal operation.

In the third embodiment, the plurality of measuring machines are a combination of the articulated coordinate type three-dimensional measuring machine 20 and the portal type three-dimensional measuring machine 50, but the combination of the plurality of measuring machines is not limited to this, and the number of measuring machines is not limited to this. Is not limited to two.

Further, in each of the above-described embodiments, the present invention has been applied to a coordinate measuring machine, but the application target of the present invention is not limited to this, and the measurement probe is manually moved. Measuring equipment Generally applicable.

U ... Measurer W ... Work 20 ... Articulated 3D measuring machine 24, 60 ... Measuring probe 34 ... Laptop computer 40 ... Mobile terminal (sub monitor)
42 ... Link mechanism 50 ... Gate-type coordinate measuring machine

Claims (7)

In a manual measuring device in which the measuring probe is manually moved
A sub monitor mounted near the tip of the measurement probe is provided.
A manual measuring device characterized in that the sub monitor has a function of displaying a navigation direction based on a direction vector of the measurement probe and a function of displaying a design drawing of a position pointed to by the direction vector in real time. The manual measuring device according to claim 1, wherein the sub-monitor has a function of displaying an induction path to a measuring point of the measuring probe. The manual measuring device according to claim 1 or 2, wherein the sub monitor has a function of displaying that the measuring probe has entered the measurement allowable range. The manual measuring device according to any one of claims 1 to 3, wherein the sub monitor has a function of instructing acquisition of a measured value by the measuring probe. The claim is characterized in that the sub-monitor has a function of displaying a designated point for measurement on the design drawing, and traces the vicinity of the designated point to acquire the coordinates of a passing point. Item 4. The manual measuring device according to any one of Items 1 to 3. The manual measuring device according to any one of claims 1 to 5, wherein the sub monitor has a camera function and is configured to enlarge / reduce an image acquired by using the camera function. The manual measuring device according to any one of claims 1 to 6, wherein the sub monitor is a touch panel display.

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