A test fixture and test system

Abstract

The utility model discloses an embodiment related to the technical field of detection, and particularly discloses a test tool and a test system, which comprise a support assembly, a driving assembly, a mounting assembly and a control assembly. The driving assembly comprises a sliding table, a driving part and a transmission screw rod. The sliding table is installed on the support assembly in a reciprocating sliding manner along a first direction. The transmission screw rod is rotatably arranged on the support assembly along the first direction. The sliding table is movably connected with the transmission screw rod. The driving part is fixed on the support assembly and connected with the transmission screw rod, and is used to drive the transmission screw rod to rotate. The mounting assembly is arranged on the sliding table and is used to mount a sample to be tested. The control assembly is electrically connected with the driving part and is used to control the driving part to drive the transmission screw rod to rotate, so as to drive the sliding table and the sample to be tested thereon to reciprocate along the first direction. In the above manner, the utility model embodiment can reduce the test cost and improve the versatility of the test tool.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a testing fixture and testing system. Background Technology

[0002] Dexterous hands, as end effectors for humanoid robots to interact with their environment, are important components of humanoid robots. They belong to the intersection of cutting-edge technologies such as deep bionics, flexible sensing, microelectromechanical systems, and high-performance materials, and are a key breakthrough for realizing the technological transformation and leapfrog development of intelligent robots.

[0003] In the research and development and production of robotic dexterous hands, load endurance testing is a crucial step in evaluating their performance and reliability. Currently, load grasping tests are typically conducted by using a robotic arm to move the dexterous hand up and down. However, a single robotic arm can often only be matched with a dexterous hand with a specific connection structure, resulting in poor versatility. Furthermore, robotic arms are expensive, and large-scale deployment of multiple testing platforms for batch testing requires a significant investment in robotic arms, leading to high testing costs. Utility Model Content

[0004] The main technical problem solved by this utility model embodiment is to provide a testing fixture and testing system that can reduce the cost of testing equipment and adapt to test samples of different specifications.

[0005] To solve the above-mentioned technical problems, the present invention provides a testing fixture, including a support assembly, a drive assembly, a mounting assembly, and a control assembly. The drive assembly includes a slide table, a drive component, and a transmission screw. The slide table is reciprocally slidably mounted on the support assembly along a first direction. The transmission screw is rotatably mounted on the support assembly along the first direction. The slide table and the transmission screw are movably connected. The drive component is fixed to the support assembly and connected to the transmission screw, and is used to drive the transmission screw to rotate. The mounting assembly is disposed on the slide table and is used to mount the sample to be tested. The control assembly is electrically connected to the drive component and is used to control the drive component to drive the transmission screw to rotate, thereby causing the slide table and the sample to be tested on it to reciprocate along the first direction.

[0006] Optionally, the slide table is provided with a first screw hole, through which the transmission screw passes and is screwed to the first screw hole. Through the cooperation between the first screw hole and the transmission screw, the rotation of the transmission screw is converted into the linear motion of the slide table.

[0007] Optionally, the bracket assembly includes a base frame, a fixing member, and a locking component. The locking component connects the fixing member and the base frame respectively. The driving component is disposed on the fixing member. When the locking component is in a locked state, the fixing member is fixed to the base frame. When the locking component is in an unlocked state, the fixing member can move relative to the base frame to adjust the position of the fixing member relative to the base frame.

[0008] Optionally, the surface of the fixing member facing the locking assembly is further provided with a longitudinal groove, and the sidewall of the longitudinal groove is provided with a limiting groove. Both the longitudinal groove and the limiting groove extend along the first direction. The base frame is provided with a transverse hole extending along the second direction. The locking assembly includes a screw connector and an adjusting member. The adjusting member includes an adjusting platform and a limiting part. The limiting part protrudes from the outer wall of the adjusting platform. The adjusting platform is received in the longitudinal groove, and the limiting part is received in the limiting groove. The limiting part can slide along the limiting groove, and the adjusting platform can slide along the longitudinal groove. The adjusting platform is provided with a second screw hole. The screw connector is used to pass through the transverse hole and be screwed into the second screw hole. When the screw connector is in the locked state, the fixing member is fixed to the base frame. When the screw connector is in the unlocked state, the fixing member can move relative to the base frame along the second direction and the first direction.

[0009] Optionally, the support assembly includes a guide rail, which is fixed to the support assembly and is arranged parallel to the transmission lead screw. The slide table is provided with a guide groove, the guide rail is inserted into the guide groove, and the slide table can slide along the guide rail.

[0010] Optionally, the mounting assembly is detachably fixed to the slide, and the mounting assembly includes replaceable mounting structures for accommodating different types of test samples.

[0011] Optionally, the drive assembly further includes a first limit switch and a second limit switch, both of which are fixed to the bracket assembly and are spaced apart along the first direction. The first limit switch and the second limit switch are used to identify the position of the slide.

[0012] Optionally, when the slide table moves to the first limit switch, the control component controls the drive member to drive the transmission screw to change the rotation direction, so that the slide table moves toward the second limit switch; when the slide table moves to the second limit switch, the control component controls the drive member to drive the transmission screw to change the rotation direction, so that the slide table moves toward the first limit switch.

[0013] Optionally, the control component includes a controller, a pulse generator, and a driver. The controller is electrically connected to the first limit switch, the second limit switch, and the pulse generator, respectively. The pulse generator is electrically connected to the driver, and the driver is electrically connected to the drive unit.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide a testing system, including the above-mentioned testing fixture and detection device, wherein the mounting component of the testing fixture is used to mount the sample to be tested and the detection device, and the detection device is used to identify the information of the sample to be tested gripping the load.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike existing technologies, this utility model embodiment provides a testing fixture, including a support assembly, a drive assembly, a mounting assembly, and a control assembly. The drive assembly includes a slide table, a drive component, and a transmission screw. The slide table is reciprocally slidably mounted on the support assembly along a first direction. The transmission screw is rotatably mounted on the support assembly along the first direction. The slide table and the transmission screw are movably connected. The drive component is fixed to the support assembly and connected to the transmission screw, used to drive the transmission screw to rotate. The mounting assembly is mounted on the slide table for mounting the sample to be tested. The control assembly is electrically connected to the drive component and used to control the drive component to drive the transmission screw to rotate, thereby causing the slide table and the sample to be tested on it to reciprocate along the first direction. The testing fixture can adapt to different types and specifications of samples by changing the mounting assembly according to the type of connection structure of the sample to be tested. Furthermore, the testing fixture has fewer components, a simple structure, good load-bearing capacity of each component, and excellent load capacity during testing, which can significantly reduce the cost of testing equipment and enable the construction of a large-scale testing platform. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is an overall structural diagram of the testing fixture provided in this embodiment of the utility model; Figure 2 This is an exploded view of the test fixture provided in this embodiment of the utility model; Figure 3 This is an exploded view of the bracket assembly provided in this embodiment of the utility model; Figure 4 This is an exploded view of the locking component provided in an embodiment of the present invention; Figure 5This is an exploded view of the driving component provided in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: 100 test fixtures; 1. Bracket assembly, 11. Base frame, 111. Mounting plate, 112. Vertical plate, 1121. Horizontal hole, 12. Fixing component, 121. Longitudinal groove, 13. Locking assembly, 131. Screw connector, 132. Adjusting component, 1321. Adjusting platform, 1322. Limiting part, 1323. Second screw hole, 14. Guide rail; 2. Drive assembly, 21. Slide table, 211. First screw hole, 212. Guide groove, 22. Drive component, 23. Transmission screw, 24. First limit switch, 25. Second limit switch; 3. Install components; 4. Control components, 41. Controller, 42. Pulse generator, 43. Driver; X is the first direction, Y is the second direction, and Z is the third direction. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] This utility model provides an embodiment of a testing fixture 100, which has a simple structure, good load performance, and can be adapted to different types and specifications of test samples.

[0022] To facilitate the reader's understanding of the concept of this utility model embodiment, the specific structure of the test fixture 100 is described below: Please see Figure 1 and Figure 2The test fixture 100 includes a support assembly 1, a drive assembly 2, a mounting assembly 3, and a control assembly 4. The drive assembly 2 is mounted on the support assembly 1, the mounting assembly 3 is mounted on the drive assembly 2, and the control assembly 4 is electrically connected to the drive assembly 2. The mounting assembly 3 is used to mount the sample to be tested (such as a dexterous hand, a clamp, etc.). The control assembly 4 controls the drive assembly 2 to drive the mounting assembly 3, and the mounting assembly 3 drives the sample to be tested to reciprocate.

[0023] For the aforementioned bracket assembly 1, please refer to... Figure 3 The support assembly 1 includes a base frame 11, a fixing member 12, and a locking assembly 13. The base frame 11 and the fixing member 12 are connected by the locking assembly 13. The drive assembly 2 is mounted on the fixing member 12, allowing the fixing member 12 to move relative to the base frame 11. When it is necessary to adjust the position of the fixing member 12 relative to the base frame 11, the locking assembly 13 is unlocked, allowing the fixing member 12 to move relative to the base frame 11. When the fixing member 12 moves into place, the locking assembly 13 is then locked to fix the fixing member 12 to the base frame 11.

[0024] In some embodiments, please refer to Figure 3 , Figure 4 The base frame 11 includes a mounting plate 111 and a vertical plate 112. One end of the vertical plate 112 is fixed to the mounting plate 111, and the vertical plate 11 is perpendicular to the mounting plate 111. The locking assembly 23 includes a screw connector 131 and an adjusting member 132. The adjusting member 132 includes an adjusting platform 1321 and a limiting part 1322, with the limiting part 1322 protruding from the outer wall of the adjusting platform 1321. Figure 4 As shown, the limiting part 1322 is a raised circular ring structure that surrounds the outer wall of the adjusting platform 132. The fixing member 12 has a longitudinal groove 121 on the side facing the locking component 13. A limiting groove (not shown) is provided along the side wall of the longitudinal groove 121. Both the longitudinal groove 121 and the limiting groove extend along the first direction X. The adjusting platform 1321 is received in the longitudinal groove 121, and the limiting part 1322 is received in the limiting groove. The adjusting member 132 can slide along the longitudinal groove 121, and the limiting part 1322 can slide along the limiting groove, so that the adjusting member 132 can slide along the first direction X. Since the limiting part 1322 is inserted into the limiting groove, the adjusting member 132 cannot disengage from the longitudinal groove 121 along the third direction Z.

[0025] The adjusting platform 1321 is provided with a second screw hole 1323. The upright plate 112 has a transverse hole 1121, which extends along the second direction Y. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The screw connector 131 passes through the transverse hole 1121 and is screwed into the second screw hole 1323.

[0026] When the screw connector 131 is screwed into the second screw hole 1323 at a preset first depth, the screw connector 131 is tightened to the adjusting member 132, and the locking component 13 is in a locked state. At this time, the fixing member 12 is fixed to the upright plate 112. When the screw connector 131 is screwed into the second screw hole 1323 at a preset second depth, the preset second depth is less than the preset first depth. When the screw connector 131 and the adjusting member 132 are loosened, the locking component 13 is in the unlocked state, and the fixing member 12 can move relative to the locking component 13 along the first direction X. In addition, the locking component 13 can drive the fixing member 12 to move relative to the upright plate 112 along the second direction Y. That is, the fixing member 12 can move relative to the base frame 11 along the first direction X and the second direction Y, thereby adjusting the position of the fixing member 12 relative to the base frame 11 in the first direction X and the second direction Y.

[0027] In some embodiments, the test fixture 100 may be provided with multiple locking components 13 so that the weight of the fixing member 12, the driving component 2, the mounting component 3 and the sample to be tested is evenly distributed among multiple screws 131, thereby reducing the shear stress of a single screw 131 and reducing the probability of the screw 131 breaking.

[0028] For driver component 2 mentioned above, please refer to Figure 5 The drive assembly 2 includes a slide 21, a drive component 22, and a transmission screw 23. The drive component 22 is fixed to the top of the fixed component 12. The transmission screw 23 is rotatably mounted on the fixed component 12 along a first direction X and connected to the drive component 22. The drive component 22 can drive the transmission screw 23 to rotate around its own axis. Specifically, along the first direction X, the fixed component 12 has mounting ports at both ends. A rotating bearing is mounted in the mounting port at the bottom of the fixed component 12. One end of the transmission screw 23 is connected to the rotating bearing, and the other end of the transmission screw 23 passes through the mounting port at the top of the fixed component 12 and connects to the rotor of the drive component 22. The slide 21 has a first screw hole 211, through which the transmission screw 23 passes and is screwed into the first screw hole 211. The bracket assembly 1 also includes two guide rails 14, which are fixed to the fixing member 12 along the first direction X and are parallel to the transmission screw 23. The slide 21 has two guide grooves 212 on the side facing the fixing member 12, which are parallel to the first screw hole 211. One guide rail 14 is inserted into one guide groove 211, and the slide 21 is limited to sliding along the direction of the guide rails 14. When the driving member 22 drives the transmission screw 23 to rotate, the slide 21 moves along the first direction X with the cooperation of the guide grooves 212 and the guide rails 14.

[0029] In some embodiments, two guide rails 14 are symmetrically arranged on both sides of the transmission screw 23, and two guide grooves 212 are symmetrically arranged on both sides of the first screw hole 211, which is beneficial to the balanced force on the slide table 21 during movement.

[0030] Alternatively, in other embodiments, the number of guide rails 14 may be set to one, or a guide groove 212 may be provided on the fixing member 12, and a boss (not shown) may be provided on the slide table 21, with the boss slidably disposed on the guide groove 212.

[0031] In some embodiments, the mounting component 3 can be detachably fixed to the slide table 21 by means of bolt connection or snap-fit. The mounting component 3 includes replaceable mounting structures, such as flanges, bolts, screws, clips, etc., and different types of mounting components 3 can be replaced according to the test sample with different connection structures.

[0032] In some embodiments, the drive assembly 2 further includes a first limit switch 24 and a second limit switch 25, both of which are mounted on the fixing member 12. The first limit switch 24 is located at the top of the fixing member 12, and the second limit switch 25 is located at the bottom of the fixing member 12. The first limit switch 24 is used to identify the highest position of the slide table 21 sliding upwards, and the first limit switch 25 is used to identify the lowest position of the slide table 21 sliding downwards. In short, the first limit switch 24 and the second limit switch 25 are used to identify the extreme positions of the slide table 21, and the first limit switch 24 and the second limit switch 25 can transmit signals to the control assembly 4 when the slide table 21 is detected to have moved to its extreme position. The control assembly 4 controls the motor of the drive member 22 to rotate forward or reverse according to the signals output by the first limit switch 24 and the second limit switch 25, so that the slide table 21 reciprocates between the first limit switch 24 and the second limit switch 25. For example, when the drive slide 21 slides upward, when the slide 21 moves to the first limit switch 24, the control component 4 controls the drive member 22 to drive the transmission screw 23 to change the rotation direction, so that the slide 21 moves toward the second limit switch 25; while when the drive slide 21 slides downward, when the slide 21 moves to the second limit switch 25, the control component 4 controls the drive member 22 to drive the transmission screw 23 to change the rotation direction, so that the slide 21 moves toward the first limit switch 24.

[0033] The first limit switch 24 and the second limit switch 25 can be mechanical micro switches. When the slide table 21 moves to the position of the limit switch, it touches the mechanical micro switch to identify the position information of the slide table 21.

[0034] For control component 4 mentioned above, please refer to [reference needed]. Figure 2The control component 4 includes a controller 41, a pulse generator 42, and a driver 43. The first limit switch 24 and the second limit switch 25 are both electrically connected to the controller 41, converting the position information of the slide table 21 into electrical signals and transmitting them to the controller 41. The controller 41 is electrically connected to the pulse generator 42, and the pulse generator 42 is electrically connected to the driver 43. The controller 41 can control the pulse generator 42 to emit different pulse signals to the driver 43 according to the set test data and the received limit signals. The driver 43 controls the drive component 22 to drive the transmission screw 23 to rotate according to the received pulse signals.

[0035] When testing the sample, first fix the sample to be tested on the mounting assembly 3. Then, set the test parameters such as movement speed, stroke range, and number of tests on the controller 41, and start the test program. The controller 41 drives the pulse generator 42 to generate control pulses. The driver 43 receives the pulse signal and controls the motor of the drive component 22 to rotate forward or backward. The motor drives the transmission screw 23 to move the slide table 21 and the sample load up and down along the guide rail 24. When the slide table 21 moves to the position of the second limit switch 25, it triggers the second limit switch 25. The controller 41 receives the limit signal and controls the sample to release and grasp the load once. The motor of the drive component 22 changes the rotation direction, and the slide table 21 moves towards the position of the first limit switch 24 until the first limit switch 24 is triggered. The controller 41 receives the limit signal and controls the motor of the drive component 22 to change the rotation direction, and the slide table 21 moves towards the position of the second limit switch 25, realizing the reciprocating motion of the sample and repeated grasping of the load. When the set number of tests is reached, the test fixture 100 stops running, and the test is completed.

[0036] In this embodiment of the present invention, the testing fixture 100 includes a support assembly 1, a drive assembly 2, a mounting assembly 3, and a control assembly 4. The drive assembly 2 includes a slide 21, a drive member 22, and a transmission screw 23. The slide 21 is reciprocally slidably mounted on the support assembly 1 along a first direction X. The transmission screw 23 is rotatably mounted on the support assembly 1 along the first direction X. The slide 21 is provided with a first screw hole 211 through which the transmission screw 23 passes and is screwed into the first screw hole 211. The drive member 22 is fixed to the support assembly 1 and connected to the transmission screw 23 for driving the transmission screw 23 to rotate. Through the cooperation between the first screw hole 211 and the transmission screw 23, the rotation of the transmission screw 23 is converted into the linear motion of the slide 21. The mounting assembly 3 is disposed on the slide 21 for mounting the sample to be tested. The control assembly 4 is electrically connected to the drive member 22 for controlling the drive member 22 to drive the transmission screw 23 to rotate, thereby driving the slide 21 and the sample to be tested on it to reciprocate along the first direction X. The test fixture 100 can be adapted to different types and specifications of test samples by replacing different mounting components 3 according to the connection structure type of the sample to be tested. At the same time, the test fixture 100 has fewer components, a simple structure, good load-bearing capacity of each component, and excellent load capacity during testing, which can significantly reduce the cost of test equipment and realize the construction of a large-scale test platform.

[0037] This utility model provides a testing system embodiment, which includes the aforementioned testing fixture 100, a detection device (not shown), and a host computer (not shown). The host computer is connected to both the detection device and the control components of the testing fixture 100. The host computer sends control commands to the control components of the testing fixture 100 to drive the sample under test. The detection device is used to identify information about the sample under test gripping the load, which is mounted on the testing fixture 100. The detection device transmits the identified information to the host computer, and the host computer determines the state of the sample under test gripping the load during movement based on the detection of the detection device.

[0038] In some embodiments, the detection device can be a camera, which captures images of the sample to be tested, and the host computer identifies the gripping load of the sample based on the images.

[0039] For the structure and function of the test fixture 100, please refer to the above embodiments, which will not be repeated here.

[0040] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A testing fixture, characterized in that, include: Support assembly; A drive assembly includes a slide, a drive member, and a transmission screw. The slide is reciprocally slidably mounted on the bracket assembly along a first direction. The transmission screw is rotatably disposed on the bracket assembly along the first direction. The slide and the transmission screw are movably connected. The drive member is fixed to the bracket assembly and connected to the transmission screw for driving the transmission screw to rotate. A mounting component is provided on the slide table for mounting the sample to be tested; A control component, electrically connected to the drive component, is used to control the drive component to drive the transmission screw to rotate, so as to drive the slide and the sample to be tested on it to reciprocate along the first direction.

2. The test fixture according to claim 1, characterized in that, The slide table is provided with a first screw hole, through which the transmission screw passes and is screwed to the first screw hole. Through the cooperation between the first screw hole and the transmission screw, the rotation of the transmission screw is converted into the linear motion of the slide table.

3. The testing fixture according to claim 1, characterized in that, The support assembly includes a base frame, a fixing member, and a locking component. The locking component connects the fixing member and the base frame respectively, and the drive component is disposed on the fixing member. When the locking component is in the locked state, the fixing member is fixed to the base frame; When the locking component is in the unlocked state, the fixing member can move relative to the base frame to adjust the position of the fixing member relative to the base frame.

4. The testing fixture according to claim 3, characterized in that, The surface of the fastener facing the locking assembly is also provided with a longitudinal groove, and the sidewall of the longitudinal groove is provided with a limiting groove. Both the longitudinal groove and the limiting groove extend along the first direction, and the base frame is provided with a transverse hole extending along the second direction. The locking assembly includes a screw connector and an adjusting member. The adjusting member includes an adjusting platform and a limiting part. The limiting part protrudes from the outer wall of the adjusting platform. The adjusting platform is received in the longitudinal groove. The limiting part is received in the limiting groove. The limiting part can slide along the limiting groove. The adjusting platform can slide along the longitudinal groove. The adjusting platform is provided with a second screw hole. The screw connector is used to pass through the transverse hole and be screwed into the second screw hole. When the screw connector is in the locked state, the fixing member is fixed to the base frame; When the screw connector is in the unlocked state, the fixing member can move relative to the base frame along the second direction and the first direction.

5. The testing fixture according to claim 1, characterized in that, The support assembly includes a guide rail, which is fixed to the support assembly and is arranged parallel to the transmission lead screw. The slide table is provided with a guide groove, the guide rail is inserted into the guide groove, and the slide table can slide along the guide rail.

6. The test fixture according to claim 1, characterized in that, The mounting assembly is detachably fixed to the slide, and the mounting assembly includes replaceable mounting structures for accommodating different types of test samples.

7. The test fixture according to any one of claims 1-6, characterized in that, The drive assembly further includes a first limit switch and a second limit switch, both of which are fixed to the bracket assembly and are spaced apart along the first direction. The first limit switch and the second limit switch are used to identify the position of the slide.

8. The test fixture according to claim 7, characterized in that, When the slide table moves to the first limit switch, the control component controls the drive unit to drive the transmission screw to change the rotation direction, so that the slide table moves toward the second limit switch; When the slide table moves to the second limit switch, the control component controls the drive unit to drive the transmission screw to change the rotation direction, so that the slide table moves toward the first limit switch.

9. The test fixture according to claim 7, characterized in that, The control component includes a controller, a pulse generator, and a driver. The controller is electrically connected to the first limit switch, the second limit switch, and the pulse generator, respectively. The pulse generator is electrically connected to the driver, and the driver is electrically connected to the drive unit.

10. A testing system, characterized in that, The device includes a detection apparatus and a test fixture as described in any one of claims 1-9, wherein the mounting components of the test fixture are used to mount the sample to be tested and the detection apparatus, and the detection apparatus is used to identify information about the load gripped by the sample to be tested.

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