CN108662966B - Hole position degree measuring mechanism - Google Patents
Hole position degree measuring mechanism Download PDFInfo
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- CN108662966B CN108662966B CN201810701342.4A CN201810701342A CN108662966B CN 108662966 B CN108662966 B CN 108662966B CN 201810701342 A CN201810701342 A CN 201810701342A CN 108662966 B CN108662966 B CN 108662966B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 86
- 239000000523 sample Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims description 30
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The hole position degree measuring mechanism comprises a measuring device, wherein a moving plate sliding on a second guide rail is fixed on the side surface of a fixed frame of the measuring device, which faces a hole; a test arm formed by extending towards the hole is slid on a third guide rail on the moving plate, and two test probes are arranged at the end part of the test arm, which is close to the hole; the test arm is provided with two first distance measuring sensors which are installed oppositely, and the test directions of the two first distance measuring sensors are parallel to the third guide rail; two second distance measuring sensors which are installed oppositely are also arranged in the fixed frame. When the hole position degree measuring mechanism is used, the test probes extend into the holes, the measuring device moves along the positive and negative directions of the second guide rail, the test arm moves along the positive and negative directions of the third guide rail until the two test probes are in contact with the inner walls of the holes, the hole center position degree is calculated according to the data of the sensor, human interference factors and human errors are reduced, and the measuring accuracy is improved.
Description
Technical Field
The invention relates to the field of automatic detection, in particular to a hole position degree measuring mechanism.
Background
Automatic detection is automatic and accomplished with little or no human intervention required during the measurement and inspection process. The automatic detection can improve the automation level and degree, reduce human interference factors and human errors, and improve the reliability and the operation efficiency of the production process or equipment.
The pen-type sensor is widely applied to various industries of national economy such as aerospace, machinery, plastics, chemical industry, scientific research institutions and the like, and is used for measuring high-technology products such as elongation, vibration, object thickness, expansion and the like. The pen-type displacement sensor has excellent performance and is suitable for high-precision and high-repeatability measurement in quality control and metering applications. As shown in fig. 1, most of the mechanisms currently use a pen-type sensor 1' to directly contact a part 2' for measurement, and when measuring the part 2' with an inclined surface, a probe of the pen-type sensor 1' is deformed by an inclined acting force, so that the measurement accuracy and the service life of the pen-type sensor 1' are affected. Especially in deep hole measurement at present, if a pen-type sensor is used for measuring by stretching into the deep hole without permission, the deformation degree of the pen-type sensor in measurement cannot be predicted because the inside of the deep hole is invisible to naked eyes, and thus the measurement of deep hole related data is seriously influenced.
Disclosure of Invention
The invention provides a hole position degree measuring mechanism which is used for solving the problems of low measuring precision and low service life of a sensor in the prior art.
In order to solve the above-mentioned problems, the present invention provides a hole position measurement mechanism disposed opposite to the hole, comprising a pair of first rails axially parallel to the hole and a measurement device sliding on the first rails, the measurement device comprising
A fixed frame, on the side of which facing the hole, at least one second guide rail perpendicular to the first guide rail and a moving plate sliding on the second guide rail are fixed;
the movable plate is also provided with a third guide rail perpendicular to a plane formed by the first guide rail and the second guide rail, a test arm formed by extending towards the hole is slid on the third guide rail, the end part of the test arm, which is close to the hole, is provided with two test probes, and a straight line formed by the two test probes is parallel to the third guide rail;
the test arm is provided with two first distance measuring sensors which are installed oppositely, and the test directions of the two first distance measuring sensors are parallel to the third guide rail;
and two second distance measuring sensors which are installed oppositely are further arranged in the fixed frame, the testing directions of the two second distance measuring sensors are parallel to the second guide rail, and the second distance measuring sensors are fixedly connected with the movable plate.
Preferably, the first distance measuring sensor and the second distance measuring sensor are pen-type sensors.
Preferably, the first side plate and the second side plate are respectively arranged at two ends of the third guide rail, and the same springs are fixed between the test arm and the first side plate and between the test arm and the second side plate, so that the distances between the test arm and the first side plate and between the test arm and the second side plate are equal in the non-working state.
Preferably, the fixed frame is further provided therein with a first driving device fixedly connected to both the movable plate and the fixed frame.
Preferably, the first driving device comprises two driving cylinders which are arranged along the direction of the third guide rail and respectively defined as a first cylinder and a second cylinder, the first cylinder and the second cylinder have the same cylinder diameter, the stroke of the first cylinder is equal to half of the stroke of the second cylinder, the piston rod of the first cylinder is in sliding connection with the moving plate, and the piston rod of the second cylinder is fixedly connected with the moving plate.
Preferably, the moving plate extends into the fixed frame to form a fixed block, the second ranging sensor is fixedly connected with the fixed block, the fixed block extends away from the direction of the hole to form a fixed side plate, the length direction of the fixed side plate is parallel to the third guide rail, and a piston rod of the second cylinder is fixedly connected with the fixed side plate through a bolt.
Preferably, the fixed side plate extends towards the direction of the first cylinder to form a circular tube or a fourth guide rail, and a piston rod of the first cylinder slides in the circular tube or on the fourth guide rail.
Preferably, the measuring device is further connected to a second drive, which is arranged on the first rail side.
Preferably, the second driving device is provided with two communicated cylinders, a piston rod in the cylinder close to the measuring device is fixedly connected with the measuring device, one end of the piston rod of the cylinder far away from the measuring device is positioned in the cylinder close to the measuring device, and the other end of the piston rod is positioned in the cylinder far away from the measuring device.
Preferably, the first distance measuring sensor and the second distance measuring sensor are in signal connection with a computing system, and measuring software is arranged in the computing system and used for calculating the position degree of the hole according to measuring data sent by the first distance measuring sensor and the second distance measuring sensor.
The invention provides a hole position measuring mechanism which is arranged opposite to a hole and comprises a pair of first guide rails axially parallel to the hole and a measuring device sliding on the first guide rails, wherein the measuring device comprises
A fixed frame, on the side of which facing the hole, at least one second guide rail perpendicular to the first guide rail and a moving plate sliding on the second guide rail are fixed;
the movable plate is also provided with a third guide rail perpendicular to a plane formed by the first guide rail and the second guide rail, a test arm formed by extending towards the hole is slid on the third guide rail, the end part of the test arm, which is close to the hole, is provided with two test probes, and a straight line formed by the two test probes is parallel to the third guide rail;
the test arm is provided with two first distance measuring sensors which are installed oppositely, and the test directions of the two first distance measuring sensors are parallel to the third guide rail;
and two second distance measuring sensors which are installed oppositely are further arranged in the fixed frame, the testing directions of the two second distance measuring sensors are parallel to the second guide rail, and the second distance measuring sensors are fixedly connected with the movable plate.
When the hole position degree measuring mechanism is used, particularly for measuring deep holes, the measuring device moves along the first guide rail, so that the test probes extend into the holes, the measuring device moves along the positive and negative directions of the second guide rail, the test arm moves along the positive and negative directions of the third guide rail until the two test probes are in contact with the inner wall of the holes, and at the moment, the circle center positions of the two ends of the holes are calculated according to the data, which are displayed by the first ranging sensor and the second ranging sensor and are parallel to the directions of the second guide rail and the third guide rail, so that the position degree of the holes is defined. The measuring mechanism can measure the position degree of the hole without using a pen-type sensor to extend into the hole, reduces human interference factors and human errors, improves the measuring accuracy, and also improves the reliability and the operation efficiency of the production process or equipment.
Drawings
FIG. 1 is a measurement schematic diagram of a prior art pen sensor;
FIGS. 2 and 3 are two angular views of a measuring mechanism provided by the present invention;
FIG. 4 is a front view of a measurement mechanism provided by the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a left side view of FIG. 4;
FIG. 7 is a cross-sectional view taken along line 5 A-A;
FIG. 8 is a cross-sectional view taken at FIG. 5B-B;
FIG. 9 is a schematic view of the initial position of the measuring mechanism according to the present invention;
FIG. 10 is a schematic view of a first measuring position of the measuring mechanism according to the present invention;
FIG. 11 is a schematic view of a second measuring position of the measuring mechanism according to the present invention;
FIG. 12 is a schematic view of a solenoid valve control structure for a first cylinder according to the present invention;
FIG. 13 is a schematic diagram of a solenoid valve control structure for a second cylinder according to the present invention;
FIG. 14 is a schematic diagram of a solenoid valve control structure of a second drive device according to the present invention;
FIG. 15 is a schematic view of the position of the measuring mechanism for the first alignment according to the present invention;
FIG. 16 is a cross-sectional view of FIG. 15;
FIG. 17 is a schematic view of the position of the measuring mechanism for the second alignment according to the present invention;
fig. 18 is a cross-sectional view of fig. 17.
Shown in fig. 1: 1', a pen-type sensor; 2', parts;
shown in fig. 2-18: 100-deep hole, 210-fixed frame, 220-movable plate, 221-second guide rail, 222-third guide rail, 223-first side plate, 224-second side plate, 225-fixed block, 226-second ranging sensor, 227-fixed side plate, 228-fourth guide rail, 230-first cylinder, 231-first piston rod, 240-second cylinder, 241-second piston rod, 250-test arm, 251-spring, 252-first ranging sensor, 253-test probe, 260-bottom plate, 270-connecting plate, 310-third cylinder, 320-fourth cylinder, 330-first guide rail, 400-solenoid valve.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 2 to 9, the present invention provides a hole position measuring mechanism, in which the hole is a deep hole 100, and thus the measuring mechanism is placed opposite to the deep hole 100, and includes a pair of first rails 330 axially parallel to the deep hole 100 and a measuring device slid on the first rails 330.
In this embodiment, the measuring device faces the deep hole 100, and the deep hole 100 is a circular hole.
In order to realize automatic measurement, the measuring device is fixed on the bottom plate 260, one side of the bottom plate 260 is fixed with the connecting plate 270 through bolts, the connecting plate 270 is fixedly connected with the second driving device, the second driving device comprises two mutually communicated cylinders, namely a third cylinder 310 and a fourth cylinder 320, referring to fig. 9 to 11, the third cylinder 310 is positioned at one side far away from the deep hole 100, the fourth cylinder 320 is positioned at one side close to the deep hole 100, one end of a piston rod of the third cylinder 310 is positioned in the third cylinder 310, the other end of the piston rod of the fourth cylinder 320 is positioned in the fourth cylinder 320, and one end of the piston rod of the fourth cylinder 320 is fixedly connected with the connecting plate 270. Referring to fig. 9, in the initial position, both piston rods are located at the position where the stroke of the cylinder where each piston rod is located is 0, and the test probe 253 of the measuring device is far away from the deep hole 100; next, referring to fig. 10, the third cylinder 310 and the fourth cylinder 320 are started, the piston rod of the third cylinder 310 moves towards the deep hole 100, and after the fourth cylinder 320 is supplied with air, the piston rod of the fourth cylinder moves towards the deep hole 100, so as to drive the measuring device to move towards the deep hole 100 on the first guide rail 330, the measuring device is located at the first measuring position, at this time, the test probe 253 is located at the hole of the deep hole 100, and the measuring device firstly measures the hole of the deep hole 100; after the measurement is completed, referring to fig. 11, the third cylinder 310 is continuously started, and the above steps are repeated until the piston rods of the two cylinders are moved to the travel limit, the measuring device is located at the second measuring position, at this time, the test probe 253 has already been extended into the bottom of the deep hole 100 for measurement again, and the two measured values can be calculated and compared, so as to determine the position degree of the deep hole 100.
The measuring device comprises a fixed frame 210, in this embodiment, the fixed frame 210 is a rectangular parallelepiped frame, and at least one second rail 221 perpendicular to the first rail 330 and a moving plate 220 sliding on the second rail 221 are fixed on the side of the fixed frame 210 facing the deep hole 100.
For convenience of description, herein, a direction in which the first rail 330 is located is defined as an X-direction, a direction in which the second rail 221 is located is defined as a Y-direction, and a direction in which the third rail 222 perpendicular to the plane in which the first rail 330 and the second rail 221 are located is defined as an X-direction, and an XYZ three-dimensional coordinate system is established.
The moving plate 220 is further provided with a third guide rail 222 parallel to the Z direction, and in this embodiment, the lengths of the second guide rail 221 and the third guide rail 222 are equal to the lengths of the fixed frame 210 in the Y direction and the Z direction, respectively. And in order to stabilize the moving plate 220, two second guide rails 221 are provided such that the moving plate 220 stably slides on the second guide rails 221 and the length of the moving plate 220 in the Y direction is smaller than that of the fixed frame 210.
The third guide rail 222 slides on the test arm 250 formed by extending toward the deep hole, the end portion of the test arm 250 away from the deep hole 100 slides on the third guide rail 222, the two ends of the third guide rail 222 are respectively provided with a first side plate 223 and a second side plate 224, and springs 251 with identical length and elastic coefficient are fixed between the test arm 250 and the first side plate 223 and between the test arm 250 and the second side plate 224, so that under the action of the two springs 251 in a non-working state, the distances between the test arm 250 and the first side plate 223 and the second side plate 224 are equal, that is, the test arm 250 rests at the midpoint of the third guide rail 222.
The end of the test arm 250 near the deep hole 100 is provided with two test probes 253, and the two test probes 253 are arranged along the Z direction; the test arm 250 is further provided with two first distance measuring sensors 252 which are installed in opposite directions, namely opposite directions, the first distance measuring sensors 252 are pen-type sensors, the test directions of the two first distance measuring sensors 252 are Z directions, namely the first distance measuring sensors 252 are used for testing the displacement of the test arm 250 in the Z directions, for example, when one test probe 253 touches the inner wall of the deep hole 100 when the test probe 253 moves in the deep hole 100, the other test probe 253 touches the inner wall of the deep hole 100, the test arm 250 moves in the Z directions and the Y directions under the reaction force of the inner wall, at the moment, one spring 251 inevitably deforms elastically until the two test probes 253 touch the inner wall of the deep hole 100, and the first distance measuring sensors 252 are used for measuring the displacement of the test arm 250 in the Z directions.
The moving plate 220 is extended toward the inside of the fixed frame 210 to form a fixed block 225, and two second distance measuring sensors 226 installed opposite to each other are fixed to the fixed block 225, and the second distance measuring sensors 226 are also pen-type sensors, and the test direction of the two second distance measuring sensors is the Y direction for testing the displacement of the moving plate 220 in the Y direction.
The first ranging sensor 252 and the second ranging sensor 226 are both connected with a computing system, common data computing software is arranged in the computing system, and a midpoint value is calculated through 4 data according to displacement data, in the Z direction and the Y direction, of the whole measuring device, which are obtained by the measurement of the first ranging sensor 252 and the second ranging sensor 226 respectively; the same method is used to measure the positions of the centers of the circles of the two ends of the deep hole 100.
In order to realize automatic measurement, a first driving device fixedly connected to the moving plate 220 and the fixed frame 210 is further disposed in the fixed frame 210, the first driving device includes two driving cylinders arranged along the Z direction, which are respectively defined as a first cylinder 230 and a second cylinder 240, the same side ends of the two cylinders are fixed on the fixed frame 210, and piston rods of the two cylinders are connected to the moving plate 220.
The two cylinders are connected with the moving plate 220 in the following manner: the fixing block 225 is formed with a fixing side plate 227 extending in the X-direction away from the deep hole 100, the length direction of the fixing side plate 227 is parallel to the Z-direction, and the Z-direction length is greater than the distance between the piston rod of the first cylinder 230 and the piston rod of the second cylinder 240. For convenience of description, a piston rod of the first cylinder 230 is defined as a first piston rod 231, a piston rod of the second cylinder 240 is defined as a second piston rod 241, the second piston rod 241 is fixedly connected to the fixed side plate 227 by a bolt, and the fixed side plate 227 extends toward the first piston rod 231 to form a circular tube or a fourth guide rail 228, and the first piston rod 231 slides in the circular tube or on the fourth guide rail 228, as shown in fig. 7.
For convenience of description, a piston rod stroke of 0 in the first, second, third, and fourth cylinders 230, 240, 310, and 320 is defined as a forward direction, and a stroke limit is defined as a reverse direction.
The cylinder diameters of the first cylinder 230 and the second cylinder 240 are the same, the stroke of the first cylinder 230 is equal to half of the stroke of the second cylinder 240, the first cylinder 230 is supplied in the forward direction, the second cylinder 240 is supplied in the reverse direction, the acting force of the first cylinder 230 is defined as F1, the acting force of the second cylinder is defined as F2, according to f=ps, the effective area of the second cylinder 240 when supplied in the reverse direction under the same pressure is subtracted by the area of the piston rod, the effective area of the first cylinder 230 when supplied is defined as S1, the effective area of the second cylinder 240 when supplied is S2, S2< S1, and F2< F1, so that the moving plate 220 rests at the midpoint of the second guide rail 221 in the non-working state. In an operating state, both the first cylinder 230 and the second cylinder 240 drive the moving plate 220 to move on the second guide rail 221.
In the present invention, two cylinders in the first driving device and two cylinders in the second driving device are connected with the solenoid valve 400 controlled by the PLC, and the PLC is programmed according to the actual measurement requirement, so that for the first driving device, the first cylinder 230 moves reversely, and the second cylinder 240 also moves reversely, so that the moving plate 220 drives the test probes 253 to move in the Y direction until the two test probes 253 touch the inner wall of the deep hole 100 to stop moving, please refer to fig. 12; the solenoid valve 400 is controlled to enable the first cylinder 230 to continue to move reversely, and the second cylinder 240 to move forward, so that the moving plate 220 drives the test probes 253 to move towards the other end in the Y direction until the two test probes 253 touch the inner wall of the deep hole 100 to stop moving, please refer to FIG. 13; for the second driving device, the electromagnetic valve 400 is controlled to supply air to the third air cylinder 310, the third air cylinder 310 moves forward, so that the measuring device moves in the X direction, the test probe 253 measures at the orifice of the deep hole 100, then the electromagnetic valve 400 is controlled to supply air to the fourth air cylinder 320, the fourth air cylinder 320 also moves forward, so that the measuring device continues to move in the X direction, and the test probe 253 penetrates into the bottom of the deep hole 100 to measure, as shown in fig. 14.
Before the measuring mechanism is used, a qualified part with a data inspection report is used for calibration, the mechanism moves to each measuring point to measure the measurement range to zero, and then the corresponding deviation value is input into a program through the inspection report to complete the calibration, so that the measurement of the part can be started. The use process of the measuring mechanism provided by the invention is as follows:
step one: firstly, the third cylinder 310 in the second driving device supplies air, so that the measuring device moves towards the deep hole 100, and the test probe 253 stops at the orifice;
step two: referring to fig. 16, the second cylinder 240 is stopped to supply air, the first cylinder 230 and the second cylinder 240 are moved in opposite directions, the moving plate 220 moves along the second guide rail 221 to one end of the second guide rail 221 as shown in fig. 15, the test probes 253 touch the inner wall of the deep hole 100, if only one test probe 253 touches the inner wall of the deep hole 100 at this time, the spring 251 pushes the test arm 250 to move on the third guide rail 222 by using the reaction force of the inner wall, and then the test arm 250 continues to move along the Y direction until both test probes 253 touch the inner wall of the deep hole 100, and the Z-direction displacement measured by the first ranging sensor 252 and the Y-direction displacement measured by the second ranging sensor 226 are recorded as Y1 and Z1, respectively, and sent to the computing system;
step three: referring to fig. 18, the second cylinder 240 is then made to start to supply air, the first cylinder 230 continues to move reversely, the second cylinder 240 moves forward, the first piston rod 231 maintains the position unchanged, the second piston rod 241 is pushed, so as to drive the moving plate 220 to move towards the other end of the second guide rail 221, referring to fig. 17, if only one test probe 253 touches the inner wall of the deep hole 100, the spring 251 pushes the test arm 250 to move on the third guide rail 222 by using the reaction force of the inner wall, and then the test arm 250 continues to move along the Y direction until both test probes 253 touch the inner wall of the deep hole 100, the Z displacement measured by the first ranging sensor 252 and the Y displacement measured by the second ranging sensor 226 are recorded as Y2 and Z2 respectively, and are sent to the computing system according to the formula:
thereby calculating the circle center position of one end of the orifice of the deep hole 100;
step four: in the second driving device, the third cylinder 310 and the fourth cylinder 320 are both supplied with air in the forward direction, so that the measuring device moves towards the deep hole 100, the test probe 253 stops at the bottom of the hole, then the steps two to three are repeated, the positions of the hole opening of the deep hole 100 and the circle centers at the two ends of the bottom of the hole are calculated by the computing system, and the alignment of the deep hole 100 is completed.
In summary, when the deep hole position measuring mechanism is used, the measuring device moves along the first guide rail 330, so that the test probe 253 extends into the deep hole 100, the measuring device moves along the second guide rail 221 in the forward and reverse directions, the test arm 250 moves along the third guide rail 222 in the forward and reverse directions until both the test probes 253 are in contact with the inner wall of the deep hole 100, and the positions of the centers of the circles of the two ends of the deep hole 100 are calculated according to the data of the displacement of the first ranging sensor 252 and the second ranging sensor 226 in the direction parallel to the second guide rail 221 and the third guide rail 222, so as to define the position of the deep hole 100. The measuring mechanism can measure the position degree of the deep hole 100 without using a pen-type sensor to extend into the deep hole 100, reduces human interference factors and human errors, improves the measuring accuracy, and also improves the reliability and the operation efficiency of the production process or equipment.
Although embodiments of the present invention have been described in the specification, these embodiments are presented only, and should not limit the scope of the present invention. Various omissions, substitutions and changes in the form of examples are intended in the scope of the invention.
Claims (7)
1. A hole position measurement mechanism disposed opposite to said hole, comprising a pair of first rails axially parallel to said hole and a measurement device sliding on said first rails, said measurement device comprising
A fixed frame, on the side of which facing the hole, at least one second guide rail perpendicular to the first guide rail and a moving plate sliding on the second guide rail are fixed;
the movable plate is also provided with a third guide rail perpendicular to a plane formed by the first guide rail and the second guide rail, a test arm formed by extending towards the hole is slid on the third guide rail, the end part of the test arm, which is close to the hole, is provided with two test probes, and a straight line formed by the two test probes is parallel to the third guide rail; the two ends of the third guide rail are respectively provided with a first side plate and a second side plate, and the same springs are fixed between the test arm and the first side plate and between the test arm and the second side plate, so that the distances between the test arm and the first side plate and between the test arm and the second side plate are equal in the non-working state;
the test arm is provided with two first distance measuring sensors which are installed oppositely, and the test directions of the two first distance measuring sensors are parallel to the third guide rail;
two second distance measuring sensors which are installed oppositely are arranged in the fixed frame, the testing directions of the two second distance measuring sensors are parallel to the second guide rail, and the second distance measuring sensors are fixedly connected with the movable plate;
the fixed frame is internally provided with a first driving device which is fixedly connected with the movable plate and the fixed frame; the first driving device comprises two driving cylinders which are arranged along the direction of the third guide rail and respectively defined as a first cylinder and a second cylinder, the diameters of the first cylinder and the second cylinder are the same, the stroke of the first cylinder is equal to half of the stroke of the second cylinder, a piston rod of the first cylinder is in sliding connection with the moving plate, and a piston rod of the second cylinder is fixedly connected with the moving plate.
2. The hole location measurement mechanism of claim 1, wherein the first and second ranging sensors are pen sensors.
3. The hole position degree measuring mechanism according to claim 1, wherein the moving plate extends into the fixed frame to form a fixed block, the second distance measuring sensor is fixedly connected with the fixed block, the fixed block extends away from the hole to form a fixed side plate, the length direction of the fixed side plate is parallel to the third guide rail, and a piston rod of the second cylinder is fixedly connected with the fixed side plate through a bolt.
4. A hole position measurement mechanism according to claim 3, wherein the fixed side plate extends in a direction toward the first cylinder to form a circular tube or a fourth guide rail, and a piston rod of the first cylinder slides within the circular tube or on the fourth guide rail.
5. Hole position measurement mechanism according to claim 1, characterized in that the measurement device is further connected to a second drive device, which is arranged on the side of the first rail.
6. The hole position measurement mechanism according to claim 5, wherein the second driving means is provided with two communicated cylinders, a piston rod in the cylinder close to the measuring means is fixedly connected with the measuring means, one end of the piston rod of the cylinder far from the measuring means is located in the cylinder close to the measuring means, and the other end is located in the cylinder far from the measuring means.
7. The hole location measurement mechanism of claim 1, wherein the first and second ranging sensors are in signal connection with a computing system in which measurement software is disposed that calculates the location of the hole based on measurement data transmitted by the first and second ranging sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701342.4A CN108662966B (en) | 2018-06-29 | 2018-06-29 | Hole position degree measuring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701342.4A CN108662966B (en) | 2018-06-29 | 2018-06-29 | Hole position degree measuring mechanism |
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| CN108662966A CN108662966A (en) | 2018-10-16 |
| CN108662966B true CN108662966B (en) | 2023-10-27 |
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| CN201810701342.4A Active CN108662966B (en) | 2018-06-29 | 2018-06-29 | Hole position degree measuring mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109551403A (en) * | 2018-12-28 | 2019-04-02 | 雷果科技无锡有限公司 | A kind of cover board mounting hole gauging fixture |
| CN112484677A (en) * | 2020-11-13 | 2021-03-12 | 本田金属技术（佛山）有限公司 | Device for detecting position degree of side hole of automobile steering knuckle |
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