Arc-shaped sample width measuring device and arc-shaped sample width automatic measuring system

Abstract

The utility model discloses an arc sample width measuring device and arc sample width automatic measuring system. Arc sample width measuring device includes laser emission module, laser receiving module and data processing module, and laser receiving module is connected with data processing module, and the measuring station of arc sample is formed between laser emission module and laser receiving module, and laser emission module is used to generate the laser screen of covering the maximum theoretical width of arc sample, and laser receiving module is used to receive the laser that is not blocked by arc sample in real time, and converts optical signal into electric signal, and data processing module is used to receive the electric signal of laser receiving module output, and calculates and outputs the width of arc sample accordingly. The utility model provides a kind of arc sample width measuring device, and the measurement result is more accurate, the reliability of test result is improved, the labor degree of tester is reduced, and the measuring efficiency is improved.

Description

Technical Field

[0001] This utility model specifically relates to a device for measuring the width of an arc-shaped sample and an automatic system for measuring the width of an arc-shaped sample, belonging to the field of metal material testing technology. Background Technology

[0002] When metallic material specimens have curved surfaces, their width measurements are often inaccurate, affecting test results. Manual measurement by operators is labor-intensive, easily causing eye fatigue, and the measurement data may contain unreliable factors. In the field of fully automated tensile testing machines, current technology uses ABB industrial robots to grasp specimens and move them to an automatic measuring device to test the width of curved specimens. The automatic measuring device is fixed, while the robot moves to grasp the specimen, measuring it at three positions. This results in excessively low robot utilization. In the future, when one robot is configured to work on multiple testing machines, the robot will not have enough idle time to complete the loading and unloading of specimens for other testing machines. Utility Model Content

[0003] The main objective of this invention is to provide a device for measuring the width of an arc-shaped sample and an automatic system for measuring the width of an arc-shaped sample, thereby overcoming the shortcomings of the prior art.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model includes: A first aspect of this utility model provides a device for measuring the width of an arc-shaped sample, comprising: a laser emitting module, a laser receiving module, and a data processing module, wherein the laser receiving module is connected to the data processing module. The laser emitting module and the laser receiving module are spaced apart along the z-axis of a three-dimensional coordinate system, forming a measurement station for the arc-shaped sample. The laser emitting module is used to generate a laser light curtain covering the maximum theoretical width of the arc-shaped sample. The laser receiving module is used to receive the laser light that is not blocked by the arc-shaped sample in real time and convert the optical signal into an electrical signal. The data processing module is used to receive the electrical signal output by the laser receiving module and calculate and output the width of the arc-shaped sample accordingly.

[0005] A second aspect of this utility model provides an automatic measurement system for the width of an arc-shaped sample, comprising: The arc-shaped sample width measuring device; A robot is used to transfer an arc-shaped sample to the measurement station and to remove the arc-shaped sample from the measurement station and transfer it to other stations. Compared with the prior art, the advantages of this utility model include: the arc-shaped sample width measuring device provided by the embodiments of this utility model can be used alone to measure the width of arc-shaped samples, or it can be used in conjunction with an ABB industrial robot. Furthermore, the measurement results of the arc-shaped sample width measuring device provided by the embodiments of this utility model are more accurate, improving the reliability of the test results, reducing the workload of the testers, and improving the measurement efficiency. In addition, the arc-shaped sample width measuring device provided by the embodiments of this utility model improves the utilization rate of ABB robots in the field of fully automatic testing machines, laying a good foundation for increasing the configuration of fully automatic testing machines, and in particular, providing an improved basis for configuring one robot with multiple testing machines. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the structure of an arc-shaped sample width measuring device provided in a typical embodiment of this utility model. Detailed Implementation

[0008] In view of the shortcomings of the prior art, the inventor of this case, through long-term research and extensive practice, has come up with the technical solution of this utility model. The following will further explain the technical solution, its implementation process, and its principles.

[0009] A first aspect of this utility model provides a device for measuring the width of an arc-shaped sample, comprising: a laser emitting module, a laser receiving module, and a data processing module, wherein the laser receiving module is connected to the data processing module. The laser emitting module and the laser receiving module are spaced apart along the z-axis of a three-dimensional coordinate system, forming a measurement station for the arc-shaped sample. The laser emitting module is used to generate a laser light curtain covering the maximum theoretical width of the arc-shaped sample. The laser receiving module is used to receive the laser light that is not blocked by the arc-shaped sample in real time and convert the optical signal into an electrical signal. The data processing module is used to receive the electrical signal output by the laser receiving module and calculate and output the width of the arc-shaped sample accordingly.

[0010] Furthermore, the laser emitting module has an emitting end face for emitting to form the laser light curtain, and the laser receiving module has a receiving end face. The emitting end face and the receiving end face are arranged opposite each other along the z-axis. The measuring station is located between the emitting end face and the receiving end face. The emitting end face and the receiving end face are parallel. The laser light curtain is perpendicular to the emitting end face of the laser emitting module and the receiving end face of the laser receiving module.

[0011] Furthermore, both the transmitting end face and the receiving end face are planar, and are parallel to the xy plane of the three-dimensional coordinate system. The laser light curtain is formed by multiple parallel laser beams emitted by the laser transmitting module.

[0012] Furthermore, the laser light curtain is a two-dimensional laser light curtain or a three-dimensional laser light curtain.

[0013] Furthermore, the laser emitting module includes a single laser, a rotating prism, and a collimating lens. The rotating prism is capable of rotating around its own axis. The laser is used to emit a static laser beam. The static laser beam is reflected by the rotating prism and enters the collimating lens, forming a moving parallel beam. The moving parallel beam forms the laser light curtain.

[0014] In a more specific implementation, the arc-shaped sample width measuring device further includes a support frame, on which the laser emitting module, the laser receiving module, and the data processing module are fixedly mounted.

[0015] In a more specific implementation, the arc-shaped sample width measuring device further includes a measurement result output module, which is connected to the data processing module and is used to receive, store, and display the width of the arc-shaped sample.

[0016] Furthermore, the measurement result output module includes a memory and a display.

[0017] Furthermore, the measurement result output module is fixedly mounted on the support frame, or the measurement result output module is fixedly mounted on the laser emission module.

[0018] In a more specific implementation, the arc-shaped sample width measuring device further includes: a sample positioning fixture, which is used to fix the arc-shaped sample and keep the part of the arc-shaped sample to be measured in a specified posture at the measuring position. When the arc-shaped sample is in the specified posture, the width direction of the arc-shaped sample is parallel to the x-axis or y-axis of the three-dimensional coordinate system.

[0019] Furthermore, the sample positioning fixture is mounted on the support frame.

[0020] Furthermore, the sample positioning fixture has a first clamping surface and a second clamping surface, the first clamping surface and the second clamping surface are spaced apart along the z-axis and arranged opposite to each other, and a clamping structure for clamping and fixing the arc-shaped sample is formed between the first clamping surface and the second clamping surface.

[0021] Furthermore, the surface layer of the first clamping surface and / or the second clamping surface is a flexible pad.

[0022] Furthermore, the flexible pad is a rubber pad, a silicone pad, or a lightweight plastic pad.

[0023] Furthermore, the sample positioning fixture includes a first clamping component, a second clamping component, and a driving mechanism. The first clamping component has a first clamping surface, and the second clamping component has a second clamping surface. The first clamping component and the second clamping component are spaced apart along the z-axis. At least one of the first clamping component and the second clamping component is connected to the driving mechanism for transmission. The driving mechanism is used to drive at least one of the first clamping component and the second clamping component to move along the z-axis and move closer to or away from the other.

[0024] Furthermore, the driving mechanism is a linear driving mechanism.

[0025] Furthermore, the linear drive mechanism includes a linear cylinder.

[0026] A second aspect of this utility model provides an automatic measurement system for the width of an arc-shaped sample, comprising: The arc-shaped sample width measuring device; A robot is used to transfer an arc-shaped sample to the measurement station and to remove the arc-shaped sample from the measurement station and transfer it to other stations.

[0027] For example, the robot could be an ABB industrial robot, etc.

[0028] The following will further explain the technical solution, its implementation process and principle with reference to the accompanying drawings. Unless otherwise specified, the laser, laser receiver, data processor, display, memory, cylinder and other components involved in the embodiments of this utility model are all known in the art and can be obtained commercially. No specific product models are limited here.

[0029] In a more typical implementation scheme, please refer to Figure 1A device for measuring the width of an arc-shaped sample includes a support frame 100 and a laser emitting module 210, a laser receiving module 220, and a data processing module 230 mounted on the support frame 100. The laser receiving module 220 is connected to the data processing module 230. The laser emitting module 210 and the laser receiving module 220 are spaced apart along the z-axis of a three-dimensional coordinate system, forming a measurement station 201 for the arc-shaped sample between them. The laser emitting module 210 is used to generate a laser light curtain covering the maximum theoretical width of the arc-shaped sample. The laser receiving module 220 is used to receive laser light that is not blocked by the arc-shaped sample in real time and convert the optical signal into an electrical signal. The data processing module 230 is used to receive the electrical signal output by the laser receiving module 220 and calculate and output the width of the arc-shaped sample accordingly.

[0030] Understandably, the laser emitting module 210 emits a laser light curtain perpendicular to the curved sample. Part of the laser light curtain is blocked, while the remaining part is received by the laser receiving module 220. The data processing module 230 can calculate and obtain the width of the curved sample based on the electrical signal output by the laser receiving module 220. For example, the part blocked by the curved sample will produce a shadow, and the laser receiving module 220 will generate a corresponding dark level corresponding to the shadowed part. The data processing module 230 calculates the width of the dark level, which corresponds to the width of the curved sample. It should be noted that the corresponding data processing and calculation process is not a structural improvement of the curved sample width measuring device, and therefore will not be specifically limited or explained.

[0031] Specifically, the width of the orthographic projection area of ​​the arc-shaped sample is the width to be measured. In order to obtain the width of the arc-shaped sample, the laser emitting module 210 has an emitting end face that emits to form the laser light curtain, and the laser receiving module 220 has a receiving end face. The emitting end face and the receiving end face are arranged opposite to each other along the z-axis. The measuring station 201 is located between the emitting end face and the receiving end face. The emitting end face and the receiving end face are parallel. The laser light curtain is perpendicular to the emitting end face of the laser emitting module 210 and the receiving end face of the laser receiving module 220.

[0032] To make the orthographic projection area of ​​the obtained arc-shaped sample more accurate, both the emitting end face and the receiving end face are planes, and the emitting end face and the receiving end face are parallel to the xy plane of the three-dimensional coordinate system. The laser light curtain is formed by multiple parallel laser beams emitted by the laser emitting module 210, thereby obtaining the orthographic projection of the arc-shaped sample in the xy plane. Specifically, the laser light curtain can be a two-dimensional laser light curtain or a three-dimensional laser light curtain.

[0033] Specifically, this invention can not only use multiple lasers to simultaneously emit multiple parallel laser beams to obtain a laser light curtain, but also use a single laser in conjunction with optical path components. Specifically, the laser emitting module 210 includes a single laser, a rotating prism, and a collimating lens. The rotating prism can rotate around its own axis. The laser emits a static laser beam, which is reflected by the rotating prism and enters the collimating lens, forming a moving parallel beam. This moving parallel beam forms the laser light curtain. It should be noted that the rotating prism can be formed by assembling a rotating drive motor with the prism, which is driven to rotate by the motor. The prism can be a hexagonal prism or a multi-prism, etc. The prism and collimating lens are conventional optical components and will not be described in detail here.

[0034] Specifically, the laser receiving module 220 used in this invention may include a focusing lens and a phototube. The area of ​​the focusing lens surface is the same as that of the receiving end surface, or they can be understood as the same entity. The focusing lens focuses the unobstructed portion of the laser light curtain onto the phototube, and the phototube generates a corresponding dark level as the aforementioned electrical signal. Furthermore, the data processing module 230's data processing and calculation model is not an improvement to the product structure / construction, and therefore will not be described. Those skilled in the art can perform calculations based on existing technology.

[0035] It should be noted that during the measurement, the axial direction of the arc-shaped sample is parallel to the z-axis. The arc-shaped sample is illuminated by a laser light curtain, which can obtain multiple width values ​​between the two sides of the arc-shaped sample along the width direction. By averaging these multiple width values ​​and using the average value as the width of the arc-shaped sample, the obtained width value is closer to the true width value of the central area of ​​the arc-shaped sample.

[0036] It should be noted that the laser emitting module 210 and the laser receiving module 220 may also be equipped with power connectors, data connectors, etc., to realize power supply and data export, etc. These are known or easily implemented in the art, and no specific limitations are made here.

[0037] To obtain the width information of the arc-shaped sample more intuitively, the arc-shaped sample width measuring device may further include a measurement result output module 400. The measurement result output module 400 is connected to the data processing module 230 and is used to receive, store, and display the width of the arc-shaped sample. Specifically, the measurement result output module 400 may include a memory and a display. The measurement result output module 400 is fixedly mounted on the support frame 100, or it may be fixedly mounted on the laser emitting module 210.

[0038] In order to hold the arc-shaped sample at the measurement station 201, the arc-shaped sample width measuring device also includes a sample positioning clamp 300, which is mounted on the support frame 100. The sample positioning clamp 300 is used to fix the arc-shaped sample and hold the part of the arc-shaped sample to be measured at the measurement station 201 in a specified posture. When the arc-shaped sample is in the specified posture, the width direction of the arc-shaped sample is parallel to the x-axis or y-axis of the three-dimensional coordinate system.

[0039] Specifically, the sample positioning fixture 300 has a first clamping surface and a second clamping surface. The first clamping surface and the second clamping surface are spaced apart along the z-axis and arranged opposite to each other. A clamping structure for clamping and fixing the arc-shaped sample is formed between the first clamping surface and the second clamping surface. As one embodiment, the surface layer of the first clamping surface and the second clamping surface is a flexible pad 340. For example, the flexible pad 340 can be a rubber pad, a silicone pad, or a lightweight plastic pad, etc.

[0040] In one specific embodiment, the sample positioning fixture 300 includes a first clamping component 310, a second clamping component 320, and a driving mechanism 330. The first clamping component 310 has a first clamping surface, and the second clamping component 320 has a second clamping surface. The first clamping component 310 and the second clamping component 320 are spaced apart along the z-axis. At least one of the first clamping component 310 and the second clamping component 320 is driveably connected to the driving mechanism 330. The driving mechanism 330 is used to drive at least one of the first clamping component 310 and the second clamping component 320 to move along the z-axis and move closer to or away from the other, thereby achieving clamping, fixing, and releasing of the arc-shaped sample. Specifically, the driving mechanism 330 is a linear driving mechanism 330; for example, the linear driving mechanism 330 can be a linear cylinder, etc.

[0041] Specifically, the support frame 100 in this embodiment mainly serves to provide fixation and support, and its specific structure can be diverse, without being specifically limited here. However, as a typical structure, the support frame 100 can also be provided with a guide rail extending along the z-axis. The sample positioning fixture 300, the laser emitting module 210, and the laser receiving module 220 can be movably coupled with the guide rail and can change position by moving along the guide rail. Correspondingly, the support frame 100 needs to be provided with fixing components for locking and unlocking the sample positioning fixture 300, the laser emitting module 210, and the laser receiving module 220. The structure of the fixing components that realize this function is known in the art and is not particularly limited here.

[0042] This utility model provides an arc-shaped sample width measuring device that can be used alone to measure the width of arc-shaped samples or in conjunction with an ABB industrial robot. Furthermore, the measurement results obtained by this device are more accurate, improving the reliability of test results, reducing the workload of the test operator, and increasing measurement efficiency. In addition, this device improves the utilization rate of ABB robots in the field of fully automated testing machines, laying a solid foundation for increasing the configuration of fully automated testing machines, and particularly providing an improved basis for configuring one robot with multiple testing machines.

[0043] It should be understood that the above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An arc-shaped specimen width measuring device characterized by comprising: It includes: a laser emitting module, a laser receiving module, and a data processing module, wherein the laser receiving module is connected to the data processing module. The laser emitting module and the laser receiving module are spaced apart along the z-axis of a three-dimensional coordinate system, forming a measurement station for the arc-shaped sample. The laser emitting module is used to generate a laser light curtain covering the maximum theoretical width of the arc-shaped sample. The laser receiving module is used to receive the laser light that is not blocked by the arc-shaped sample in real time and convert the optical signal into an electrical signal. The data processing module is used to receive the electrical signal output by the laser receiving module and calculate and output the width of the arc-shaped sample accordingly.

2. The arc-shaped sample width measuring device according to claim 1, characterized in that: The laser emitting module has an emitting end face for emitting to form the laser light curtain, and the laser receiving module has a receiving end face. The emitting end face and the receiving end face are arranged opposite each other along the z-axis. The measuring station is located between the emitting end face and the receiving end face. The emitting end face and the receiving end face are parallel. The laser light curtain is perpendicular to the emitting end face of the laser emitting module and the receiving end face of the laser receiving module.

3. The arcuate sample width measuring device of claim 2, wherein: Both the transmitting end face and the receiving end face are planar, and are parallel to the xy plane of the three-dimensional coordinate system. The laser light curtain is formed by multiple parallel laser beams emitted by the laser transmitting module.

4. The arcuate sample width measuring device of claim 3, wherein: The laser light curtain can be a two-dimensional laser light curtain or a three-dimensional laser light curtain.

5. The arc-shaped sample width measuring device according to claim 2 or 3, characterized in that: The laser emitting module includes a single laser, a rotating prism, and a collimating lens. The rotating prism can rotate around its own axis. The laser is used to emit a static laser beam. The static laser beam is reflected by the rotating prism and enters the collimating lens, forming a moving parallel beam. The moving parallel beam forms the laser light curtain.

6. The arc-shaped sample width measuring device according to claim 1, characterized in that, Also includes: The support frame on which the laser emitting module, the laser receiving module, and the data processing module are fixedly mounted.

7. The arc-shaped sample width measuring device according to claim 6, characterized in that, Also includes: The measurement result output module is connected to the data processing module and is used to receive, store, and display the width of the arc-shaped sample.

8. The arc-shaped sample width measuring device according to claim 7, characterized in that: The measurement result output module includes a memory and a display.

9. The arcuate sample width measuring device of claim 7, wherein: The measurement result output module is fixedly mounted on the support frame, or the measurement result output module is fixedly mounted on the laser emission module.

10. The arcuate sample width measuring device of claim 6, wherein, Also includes: A sample positioning fixture is used to fix an arc-shaped sample and keep the part of the arc-shaped sample to be measured in a specified posture at the measurement position. When the arc-shaped sample is in the specified posture, the width direction of the arc-shaped sample is parallel to the x-axis or y-axis of the three-dimensional coordinate system.

11. The arc-shaped sample width measuring device according to claim 10, characterized in that: The sample positioning fixture is mounted on the support frame.

12. The arcuate sample width measuring device of claim 10, wherein: The sample positioning fixture has a first clamping surface and a second clamping surface. The first clamping surface and the second clamping surface are spaced apart along the z-axis and arranged opposite to each other. A clamping structure for clamping and fixing the arc-shaped sample is formed between the first clamping surface and the second clamping surface.

13. The arc-shaped sample width measuring device according to claim 12, characterized in that: The surface layer of the first clamping surface and / or the second clamping surface is a flexible pad.

14. The arcuate sample width measuring device of claim 13, wherein: The flexible pad is a rubber pad.

15. The arcuate sample width measuring device of claim 12, wherein: The sample positioning fixture includes a first clamping component, a second clamping component, and a driving mechanism. The first clamping component has a first clamping surface, and the second clamping component has a second clamping surface. The first clamping component and the second clamping component are spaced apart along the z-axis. At least one of the first clamping component and the second clamping component is connected to the driving mechanism for transmission. The driving mechanism is used to drive at least one of the first clamping component and the second clamping component to move along the z-axis and move closer to or away from the other.

16. The arcuate sample width measuring device of claim 15, wherein: The driving mechanism is a linear driving mechanism.

17. The arcuate sample width measuring device of claim 16, wherein: The linear drive mechanism includes a linear cylinder.

18. An arc sample width automatic measurement system characterized by, include: The arc-shaped sample width measuring device according to any one of claims 1-17; A robot is used to transfer an arc-shaped sample to the measurement station and to remove the arc-shaped sample from the measurement station and transfer it to other stations.

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