VCU test fixture

Abstract

The utility model discloses a VCU test fixture, and relates to the technical field of electronic testing. The jig comprises a workpiece carrier plate, a plurality of positioning blocks with non-slip mats are arranged above the workpiece carrier plate, and a self-adaptive fixing mechanism is mounted on the outer wall of the workpiece carrier plate. The self-adaptive fixing mechanism comprises a linkage gear, a rack, a traction plate, a guide rail, a two-way lead screw, a screw block and the like, the linkage gear is rotationally connected to the middle of the bottom of the workpiece carrying plate through a rotating shaft, the rack is meshed with the linkage gear, the two-way lead screw is rotationally connected to the inner walls of the two ends of the guide rail, the screw block is in threaded connection with the two-way lead screw, and the positioning block is welded to the top of the screw block. The VCU test fixture can flexibly adjust the position of the positioning block through the self-adaptive fixing mechanism, accurately position and stably fix VCUs with different sizes, has the advantages of high universality, high test efficiency, accurate positioning, stable structure and the like, effectively solves the problems of poor universality and unstable positioning of the existing fixture, and is suitable for production, manufacturing, research and development testing of the VCU.

Description

Technical Field

[0001] This application relates to the field of electronic testing technology, and in particular to a VCU test fixture. Background Technology

[0002] CN217443469U discloses "a VCU test fixture, comprising: a base and a stand at the top of the base...the limiting roller is movably connected to the support rod via a rotating shaft". This utility model assembles the VCU test workpiece onto a workpiece carrier plate, and drives the connecting plate along the opening of the workpiece carrier plate through a telescopic cylinder. This enables the slider inside the workpiece carrier plate to move horizontally in coordination with the guide rail, facilitating the contact between the VCU test workpiece and the contour probe for testing. The limiting roller facilitates the contact and correction between the VCU test workpiece and the contour probe, which not only improves testing efficiency but also testing accuracy. It has a high degree of automation and reduces the defect rate caused by the traditional manual removal of connectors by operators, meeting the needs of enterprises for mass production testing.

[0003] In the aforementioned patent, the workpiece carrier plate used to assemble VCU test workpieces in the fixture has four L-shaped positioning blocks on its top that are fixed in position. This structure is only suitable for VCU test workpieces with uniform specifications and dimensions. In actual production testing, VCUs may exist in various specifications and dimensions due to different production batches and diverse design requirements. When testing VCUs of different specifications and dimensions is required, the workpiece carrier plate needs to be disassembled and reassembled to adapt them. However, frequent disassembly and reassembly of the workpiece carrier plate is not only difficult to operate and increases the workload of testing personnel, but also easily introduces errors during the disassembly and reassembly process, affecting the accuracy of the test. At the same time, disassembly and reassembly of the workpiece carrier plate consumes a lot of time, greatly reducing testing efficiency and failing to meet the requirements of testing efficiency and flexibility in actual production. Therefore, a VCU test fixture is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a VCU testing fixture to solve the problems of poor adaptability of existing VCU testing fixtures to VCUs of different specifications and sizes, complex operation, and low testing efficiency.

[0005] The VCU testing fixture provided in this application adopts the following technical solution:

[0006] A VCU test fixture includes a workpiece carrier plate, a plurality of positioning blocks are disposed above the workpiece carrier plate, anti-slip pads are adhered to the inner walls of the plurality of positioning blocks, and an adaptive fixing mechanism for driving the plurality of positioning blocks to move is installed on the outer wall of the workpiece carrier plate.

[0007] The adaptive fixing mechanism includes a linkage gear, a rack, and a traction plate. The linkage gear is rotatably connected to the bottom middle outer wall of the workpiece carrier plate via a rotating shaft. The two traction plates are located below the workpiece carrier plate. The two racks are respectively welded to the bottom outer walls of the two traction plates, and both racks mesh with the linkage gear.

[0008] Preferably, the adaptive fixing mechanism further includes guide rails, bidirectional lead screws, and screw blocks. The two bidirectional lead screws are rotatably connected to the inner walls at both ends of the two guide rails, and each pair of screw blocks are symmetrically threaded to the outer wall of the bidirectional lead screws. Multiple positioning blocks are welded to the top outer wall of multiple screw blocks.

[0009] Preferably, a servo motor is fixedly installed on the bottom outer wall of the workpiece carrier plate, and a drive gear is fixedly connected to the end of the output shaft of the servo motor, the drive gear meshing with the linkage gear.

[0010] Preferably, the top outer wall of the workpiece carrier plate has two limiting grooves, and multiple limiting blocks are fixedly connected to the top outer walls of both ends of the two traction plates. The multiple limiting blocks are slidably connected to the inner walls of the two limiting grooves.

[0011] Preferably, a fixing plate is welded to the top of the plurality of limiting blocks, and the guide rail is welded to the top outer wall of each pair of fixing plates along the width direction of the workpiece carrier plate.

[0012] Preferably, a stepper motor is fixedly mounted on one end of each of the two guide rails, and the output shaft of the stepper motor passes through the guide rail and is fixedly connected to one end of a bidirectional lead screw.

[0013] Preferably, two sliders are fixedly connected to the top outer wall of the workpiece carrier plate, and a connecting plate is also fixedly connected to the bottom outer wall of the workpiece carrier plate.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. By setting an adaptive fixing mechanism, including the coordinated work of components such as linkage gears, racks, traction plates, guide rails, double-acting screws and screw blocks, the movement of multiple positioning blocks can be realized. This allows for flexible adjustment of the fixing position according to VCUs of different sizes and shapes, enhancing the adaptability of the fixture to different VCU products, improving the versatility of the fixture, reducing the need to replace the fixture due to product differences, and lowering testing costs.

[0016] 2. The anti-slip pads bonded to the inner wall of the positioning block effectively increase the friction with the VCU surface, preventing VCU displacement during testing and ensuring the accuracy and stability of the test. Simultaneously, the threaded connection structure between the bidirectional lead screw and the screw block allows for higher movement precision of the positioning block, enabling accurate positioning and fixation of the VCU, further improving the reliability of the test. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0018] Figure 2 This is a first partial sectional view of an embodiment of the application;

[0019] Figure 3 This is a second partial sectional view of an embodiment of the application.

[0020] Explanation of reference numerals in the attached drawings: 1. Workpiece carrier plate; 2. Positioning block; 3. Anti-slip pad; 4. Linkage gear; 5. Servo motor; 6. Drive gear; 7. Rack; 8. Traction plate; 9. Limiting groove; 10. Limiting block; 11. Fixing plate; 12. Guide rail; 13. Two-way lead screw; 14. Screw block; 15. Stepper motor; 16. Slider; 17. Connecting plate. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0022] This application discloses a VCU testing fixture. (Refer to...) Figure 1-3 A VCU test fixture includes a workpiece carrier plate 1, with multiple positioning blocks 2 disposed above the workpiece carrier plate 1, and anti-slip pads 3 adhered to the inner walls of the multiple positioning blocks 2. An adaptive fixing mechanism for driving the multiple positioning blocks 2 to move is installed on the outer wall of the workpiece carrier plate 1.

[0023] The linkage part of the adaptive fixing mechanism includes a linkage gear 4, a rack 7, and a traction plate 8. The linkage gear 4 is rotatably connected to the bottom middle outer wall of the workpiece carrier plate 1 via a rotating shaft. The two traction plates 8 are located below the workpiece carrier plate 1. The two racks 7 are welded to the bottom outer walls of the two traction plates 8 respectively, and both racks 7 mesh with the linkage gear 4.

[0024] A servo motor 5 is fixedly installed on the bottom outer wall of the workpiece carrier plate 1. A drive gear 6 is fixedly connected to the end of the output shaft of the servo motor 5. The drive gear 6 meshes with the linkage gear 4. When the servo motor 5 starts, it drives the linkage gear 4 to rotate through the drive gear 6, thereby causing the two racks 7 meshing with the linkage gear 4 to move synchronously, thus realizing the synchronous movement of the two traction plates 8.

[0025] The positioning and adjustment part of the adaptive fixing mechanism includes a guide rail 12, a bidirectional lead screw 13, and screw blocks 14. The two bidirectional lead screws 13 are rotatably connected to the inner walls at both ends of the two guide rails 12, and each pair of screw blocks 14 are symmetrically threaded to the outer wall of the bidirectional lead screw 13. Multiple positioning blocks 2 are welded to the top outer wall of multiple screw blocks 14.

[0026] Two limiting grooves 9 are formed on the top outer wall of the workpiece carrier plate 1. Multiple limiting blocks 10 are fixedly connected to the top outer walls of the two ends of the two traction plates 8. The multiple limiting blocks 10 are slidably connected to the inner walls of the two limiting grooves 9. Fixed plates 11 are welded to the top of the multiple limiting blocks 10. Guide rails 12 are welded to the top outer walls of every two fixed plates 11 along the width direction of the workpiece carrier plate 1. In this way, the cooperation between the limiting blocks 10 and the limiting grooves 9 plays a limiting and guiding role in the movement of the traction plates 8, ensuring the stability of the movement of the traction plates 8.

[0027] A stepper motor 15 is fixedly installed at one end of each of the two guide rails 12. The output shaft of the stepper motor 15 passes through the guide rail 12 and is fixedly connected to one end of the bidirectional lead screw 13. When the stepper motor 15 starts, it drives the bidirectional lead screw 13 to rotate, thereby causing the two screw blocks 14 that are symmetrically threaded on the bidirectional lead screw 13 to move towards or away from each other. This, in turn, drives the positioning block 2 installed on the top of the screw block 14 to move, thereby achieving the positioning and fixing of the VCU.

[0028] Two sliders 16 are fixedly connected to the top outer wall of the workpiece carrier plate 1 to facilitate the installation and connection of the fixture with other testing equipment; a connecting plate 17 is also fixedly connected to the bottom outer wall of the workpiece carrier plate 1 for further fixing the fixture or connecting it with other equipment.

[0029] When testing VCUs of different sizes is required, the servo motor 5 is started first. The servo motor 5 drives the two traction plates 8 to move synchronously through the drive gear 6 and the linkage gear 4, and adjusts the distance between the two traction plates 8 to adapt to the length dimension of the VCU.

[0030] Based on the width dimension of the VCU, the stepper motor 15 is started, which drives the bidirectional lead screw 13 to rotate, causing the screw block 14 to move on the bidirectional lead screw 13, thereby adjusting the position of the positioning block 2 in the width direction.

[0031] The VCU is placed on the workpiece carrier plate 1, and the anti-slip pad 3 on the inner wall of the positioning block 2 contacts the surface of the VCU to achieve stable fixation of the VCU.

[0032] After the VCU is fixed, the fixture is connected to other test equipment via slider 16 and connecting plate 17, and various functions and performance tests of the VCU can be performed.

[0033] Through the above specific implementation methods, this VCU test fixture can achieve rapid, accurate positioning and stable fixation of VCUs of different sizes, improving the versatility of the fixture and testing efficiency, and ensuring the accuracy of test results.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A VCU testing fixture, comprising a workpiece carrier plate (1), characterized in that: Multiple positioning blocks (2) are provided above the workpiece carrier plate (1). Anti-slip pads (3) are adhered to the inner walls of the multiple positioning blocks (2). An adaptive fixing mechanism for driving the multiple positioning blocks (2) to move is installed on the outer wall of the workpiece carrier plate (1). The adaptive fixing mechanism includes a linkage gear (4), a rack (7) and a traction plate (8). The linkage gear (4) is rotatably connected to the bottom middle outer wall of the workpiece carrier plate (1) via a rotating shaft. The two traction plates (8) are located below the workpiece carrier plate (1). The two racks (7) are respectively welded to the bottom outer walls of the two traction plates (8), and both racks (7) mesh with the linkage gear (4).

2. The VCU test fixture according to claim 1, characterized in that: The adaptive fixing mechanism also includes a guide rail (12), a bidirectional lead screw (13), and screw blocks (14). The two bidirectional lead screws (13) are rotatably connected to the inner walls at both ends of the two guide rails (12). Each pair of screw blocks (14) are symmetrically threaded to the outer wall of the bidirectional lead screw (13). Multiple positioning blocks (2) are welded to the top outer wall of the multiple screw blocks (14).

3. A VCU test fixture according to claim 2, characterized in that: A servo motor (5) is fixedly installed on the bottom outer wall of the workpiece carrier plate (1). A drive gear (6) is fixedly connected to the end of the output shaft of the servo motor (5). The drive gear (6) meshes with the linkage gear (4).

4. A VCU test fixture according to claim 3, characterized in that: The top outer wall of the workpiece carrier plate (1) has two limiting grooves (9), and the top outer walls of the two ends of the two traction plates (8) are fixedly connected with multiple limiting blocks (10), and the multiple limiting blocks (10) are slidably connected to the inner walls of the two limiting grooves (9).

5. A VCU test fixture according to claim 4, characterized in that: The top of each of the limiting blocks (10) is welded with a fixing plate (11), and the guide rail (12) is welded to the top outer wall of each pair of fixing plates (11) along the width direction of the workpiece carrier plate (1).

6. A VCU test fixture according to claim 5, characterized in that: A stepper motor (15) is fixedly mounted on one end of each of the two guide rails (12). The output shaft of the stepper motor (15) passes through the guide rail (12) and is fixedly connected to one end of the bidirectional lead screw (13).

7. A VCU test fixture according to claim 1, characterized in that: Two sliders (16) are fixedly connected to the top outer wall of the workpiece carrier plate (1), and a connecting plate (17) is also fixedly connected to the bottom outer wall of the workpiece carrier plate (1).

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