A high-precision servo-controlled tensile testing device

Abstract

This invention relates to the field of automotive parts inspection, and more particularly to a high-precision servo-controlled tensile testing device, comprising a housing, a mounting frame at the upper end of the housing, a bidirectional lead screw three rotatably mounted in the middle of the mounting frame, a fixed block in the middle of the mounting frame, and movable blocks inserted into both sides inside the mounting frame. A bidirectional lead screw one is mounted on the upper end of the fixed block, and a clamping plate one is threadedly connected to the surface of the bidirectional lead screw one. A bidirectional lead screw two is mounted on the upper end of the movable block, and a clamping plate two is threadedly connected to the surface of the bidirectional lead screw two. An extension mechanism is provided on the upper end of the clamping plate two. A drive system is provided on one side of the mounting frame. This device has the functions of flexibly clamping automotive parts of different specifications, switching between high and low torque, and high-precision tensile testing. It solves the problems of poor adaptability, low testing accuracy, cumbersome operation, and inability to meet the testing needs of multiple specifications of automotive parts by existing automotive parts inspection devices.

Description

[0001] This invention relates to the field of automotive parts inspection, and more particularly to a high-precision servo-controlled tensile testing device. Background Technology

[0002] In the production and processing of automotive parts, tensile strength is one of the key indicators for measuring the quality of parts and is directly related to the safety of vehicle operation. Therefore, it is necessary to conduct strict tensile tests on automotive parts.

[0003] Currently, existing tensile strength testing devices for automotive parts have several shortcomings: First, the clamping mechanism is fixed and cannot be adapted to automotive parts of different sizes and heights. The clamping stability for small, large, and tall parts is poor, and clamping deviation is prone to occur, affecting the test results. Second, the torque adjustment of the drive system is inconvenient, and it is impossible to flexibly switch torque levels according to the material and specifications of the parts. Either the torque is insufficient to complete the testing of high-strength parts, or the torque is too large and damages the parts. Third, the testing accuracy is low, lacking a precise torque sensing and data display mechanism, making it impossible to obtain tensile strength test data intuitively and accurately, and making it difficult to make accurate judgments on the quality of parts. Fourth, the operation is cumbersome, with complex clamping adjustment and gear switching processes, resulting in low testing efficiency and failing to meet the testing needs of batch parts.

[0004] Therefore, there is an urgent need for a tensile testing device for automotive parts that is highly adaptable, has high testing accuracy, and is easy to operate, in order to solve the above-mentioned problems in the existing technology. In view of this, we propose a high-precision servo-controlled tensile testing device, which solves the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a high-precision servo-controlled tensile testing device.

[0006] The technical solution of the present invention: A high-precision servo-controlled tensile testing device includes a housing, a mounting frame at the upper end of the housing, a bidirectional lead screw three rotatably mounted in the middle of the mounting frame, a fixed block in the middle of the mounting frame, movable blocks inserted into both sides inside the mounting frame, a bidirectional lead screw one at the upper end of the fixed block, a clamping plate one threadedly connected to the surface of the bidirectional lead screw one, a bidirectional lead screw two at the upper end of the movable block, a clamping plate two threadedly connected to the surface of the bidirectional lead screw two, and an extension mechanism at the upper end of the clamping plate two; A drive system is provided on one side of the mounting bracket. The drive system includes a motor and a hydraulic cylinder. The hydraulic cylinder is located on one side of the motor. A gear 1 is fixed to the output end of the motor. A gear 2 is axially fixed to one side of the gear 1. A gear 4 is axially fixed to one side of the double-acting screw. A gear 3 is axially fixed to one side of the gear 4. When gear 1 and gear 4 mesh, gear 2 and gear 3 are separated. When gear 2 and gear 3 mesh, gear 1 and gear 4 are separated.

[0007] Preferably, the upper end of the housing is provided with a guide rail, and a mounting base is inserted into the upper end of the guide rail. The output end of the hydraulic cylinder is fixedly connected to one side of the mounting base, and the motor is fixedly installed on the upper end of the mounting base. Through the cooperative design of the guide rail and the mounting base, the motor can move smoothly, ensuring smooth gear meshing and switching, ensuring the stability of high and low torque gear switching, avoiding jamming during switching, and improving the reliability of the drive system.

[0008] Preferably, a hydraulic cylinder is fixed on the upper surface of the housing. The hydraulic cylinder works in conjunction with a hydraulic cylinder. A control button is provided on one side of the hydraulic cylinder. Through the cooperation of the hydraulic cylinder and the hydraulic cylinder and the setting of the control button, precise control of the hydraulic cylinder drive can be achieved, which makes it easy for the operator to quickly switch the gear meshing state, reduce the difficulty of operation, and improve the ease of operation of the device.

[0009] Preferably, the upper end of the housing is equipped with a controller, a storage slot is provided on one side of the controller, and a base is fixed at the bottom of the housing. The controller enables a direct display of the tensile force value, making it easy for operators to quickly read the test data. The storage slot can store testing tools, improving the practicality of the device. The base enhances the overall stability of the device, preventing the device from shaking during the testing process and affecting the testing accuracy.

[0010] Preferably, a torque sensor is provided at the rear shaft of the motor. The torque sensor is electrically connected to the controller. The torque sensor senses the motor torque and transmits it to the controller to realize the accurate conversion and display of the tensile force value, ensuring the accuracy of the tensile test data and providing a reliable basis for judging the quality of the parts.

[0011] Preferably, the upper end of the fixing block is provided with a connecting rod, which is longitudinally inserted into the inside of the clamping plate. Through the guiding effect of the connecting rod, the clamping plate moves smoothly in the longitudinal direction, avoiding deviation when the clamping plate is clamped, improving the stability of the part clamping, and ensuring the smooth progress of tensile testing.

[0012] Preferably, a connecting rod 2 is inserted into the upper end of the moving block. The connecting rod 2 is longitudinally inserted into the inside of the clamping plate 2. Through the guiding effect of the connecting rod 2, the clamping plate 2 is ensured to move smoothly in the longitudinal direction, avoiding tilting or offset when the clamping plate 2 is clamped, and further improving the stability and accuracy of the part clamping.

[0013] Preferably, the expansion mechanism includes a slot and an expansion block. The expansion block is inserted into the slot, and the inner side of the expansion block is horizontal with the inner side of the second clamping plate. Through the insertion and cooperation of the slot and the expansion block, the longitudinal height of the second clamping plate can be flexibly increased, so as to achieve stable clamping of taller automotive parts, expand the detection and adaptation range of the device, and improve the versatility of the device.

[0014] Preferably, a limiting groove is provided at the bottom of the expansion block, and a limiting key with an elastic mechanism is inserted into one side of the groove. The limiting key is inserted into the limiting groove, and the expansion block is quickly installed and locked by the elastic engagement between the limiting key and the limiting groove, so as to avoid the expansion block from loosening during the testing process, ensure the stability of clamping high-quality parts, and improve the convenience of operation.

[0015] Preferably, one side of the clamping plate has an installation groove, and a movable plate is inserted into the installation groove. The limiting key is fixed to the upper end of the movable plate, and a spring is fixed between the lower end of the movable plate and the bottom of the installation groove. The spring is in a compressed state, and the movable plate is pushed by the elastic force of the spring, so that the limiting key is always locked in the limiting groove, ensuring that the expansion block is firmly locked. At the same time, it is convenient to disassemble and replace the expansion block, improving the flexibility of the expansion mechanism. When the expansion block needs to be removed, the movable plate at the lower end of the limiting key can be manually pressed down.

[0016] Compared with the prior art, the advantages of this invention are: Through the structural design of clamping plate one, clamping plate two and expansion mechanism, this invention can flexibly adjust the clamping method and clamping height according to the size and height of the parts, and has the function of clamping multiple specifications of parts, thus realizing the effect of expanding the detection range and improving the versatility of the device.

[0017] Based on the first beneficial effect, the present invention, through the structural design of the gear set, hydraulic cylinder and torque sensor in the drive system, can realize smooth switching of high and low torque gears and accurate detection of tensile data. It has high-precision tensile testing and convenient operation functions, and achieves the effects of improving detection accuracy, reducing operation difficulty and improving detection efficiency.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 This is a three-dimensional perspective view of the present invention from a first angle; Figure 2 This is a two-dimensional perspective view of the present invention. Figure 3 This is a top view of the present invention; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of structure A in the middle; Figure 5 This is a schematic diagram of the surface structure of the fixed block and the movable block of the present invention.

[0020] Figure label: 1. Housing; 2. Hydraulic cylinder; 3. Mounting base; 4. Motor; 5. Gear 1; 6. Gear 2; 7. Gear 3; 8. Gear 4; 9. Double-acting lead screw 3; 10. Mounting bracket; 11. Storage slot; 12. Controller; 13. Base; 14. Fixing block; 15. Moving block; 16. Hydraulic cylinder; 17. Control button; 18. Torque sensor; 19. Guide rail; 20. Moving plate; 21. Mounting slot; 22. Spring; 23. Extension block; 24. Limit key; 25. Slot; 26. Connecting rod 2; 27. Double-acting lead screw 2; 28. Clamping plate 2; 29. ​​Clamping plate 1; 30. Double-acting lead screw 1; 31. Connecting rod 1. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of the present invention more readily understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Example

[0025] Please see Figures 1-5 As shown, this embodiment is a high-precision servo-controlled tensile testing device, including a housing 1. A mounting frame 10 is provided on the upper end of the housing 1. A bidirectional lead screw 30 is rotatably mounted in the middle of the mounting frame 10. A fixing block 14 is provided in the middle of the mounting frame 10. Movable blocks 15 are inserted into both sides inside the mounting frame 10. A bidirectional lead screw 30 is provided on the upper end of the fixing block 14. A clamping plate 29 is threadedly connected to the surface of the bidirectional lead screw 30. A bidirectional lead screw 27 is provided on the upper end of the movable block 15. A clamping plate 28 is threadedly connected to the surface of the bidirectional lead screw 27. An extension mechanism is provided on the upper end of the clamping plate 28. A drive system is provided on one side of the mounting bracket 10. The drive system includes a motor 4 and a hydraulic cylinder 2. The hydraulic cylinder 2 is located on one side of the motor 4. A gear 1 5 is fixed at the output end of the motor 4. A gear 2 6 is axially fixed on one side of the gear 1 5. A gear 4 8 is axially fixed on one side of the double-acting screw 30. A gear 3 7 is axially fixed on one side of the gear 4 8. When gear 1 5 and gear 4 8 mesh, gear 2 6 and gear 3 7 are separated. When gear 2 6 and gear 3 7 mesh, gear 1 5 and gear 4 8 are separated.

[0026] The upper end of the housing 1 is provided with a guide rail 19, and a mounting base 3 is inserted into the upper end of the guide rail 19. The output end of the hydraulic cylinder 2 is fixedly connected to one side of the mounting base 3. The motor 4 is fixedly installed on the upper end of the mounting base 3. Through the cooperative design of the guide rail 19 and the mounting base 3, the motor 4 can move smoothly, ensuring smooth gear meshing and switching, ensuring the stability of high and low torque gear switching, avoiding jamming during switching, and improving the reliability of the drive system.

[0027] A hydraulic cylinder 16 is fixed on the upper surface of the housing 1. The hydraulic cylinder 16 works in conjunction with the hydraulic cylinder 2. A control button 17 is provided on one side of the hydraulic cylinder 16. Through the cooperation of the hydraulic cylinder 16 and the hydraulic cylinder 2 and the setting of the control button 17, the precise control of the hydraulic cylinder 2 is realized, which makes it easy for the operator to quickly switch the gear meshing state, reduce the difficulty of operation, and improve the ease of operation of the device.

[0028] The upper part of the housing 1 is equipped with a controller 12, and a storage slot 11 is provided on one side of the controller 12. The bottom of the housing 1 is fixed with a base 13. The controller 12 realizes the intuitive display of the tensile force value, which makes it easy for operators to quickly read the test data. The storage slot 11 can store the test tools, improving the practicality of the device. The base 13 enhances the overall stability of the device and avoids the device shaking during the test, which affects the test accuracy. Example

[0029] Please see Figures 1-5 As shown, this embodiment further includes, based on embodiment 1, a torque sensor 18 is provided at the rear shaft of the motor 4. The torque sensor 18 is electrically connected to the controller 12. The torque sensor 18 senses the torque of the motor 4 and transmits it to the controller 12, thereby realizing the accurate conversion and display of the tensile force value, ensuring the accuracy of the tensile test data, and providing a reliable basis for judging the quality of the parts.

[0030] The upper end of the fixing block 14 is provided with a connecting rod 31, which is longitudinally inserted into the clamping plate 29. Through the guiding effect of the connecting rod 31, the clamping plate 29 is ensured to move smoothly in the longitudinal direction, avoiding deviation when the clamping plate 29 is clamped, improving the stability of the part clamping, and ensuring the smooth progress of tensile testing.

[0031] A connecting rod 26 is inserted into the upper end of the movable block 15. The connecting rod 26 is inserted longitudinally into the clamping plate 28. Through the guiding action of the connecting rod 26, the clamping plate 28 is ensured to move smoothly in the longitudinal direction, avoiding tilting or offset when clamping, and further improving the stability and accuracy of part clamping.

[0032] The expansion mechanism includes a slot 25 and an expansion block 23. The expansion block 23 is inserted into the slot 25. The inner side of the expansion block 23 is horizontal with the inner side of the clamping plate 28. Through the insertion and cooperation of the slot 25 and the expansion block 23, the longitudinal height of the clamping plate 28 can be flexibly increased, so as to achieve stable clamping of taller automotive parts, expand the detection and adaptation range of the device, and improve the versatility of the device.

[0033] The bottom of the expansion block 23 has a limiting groove. A limiting key 24 with a flexible mechanism is inserted into one side of the slot 25. The limiting key 24 is inserted into the limiting groove. Through the elastic engagement between the limiting key 24 and the limiting groove, the expansion block 23 can be quickly installed and locked, preventing the expansion block 23 from loosening during the testing process, ensuring the stability of clamping higher parts, and improving the ease of operation.

[0034] A mounting groove 21 is provided on one side of the clamping plate 28. A movable plate 20 is inserted into the mounting groove 21. A limit key 24 is fixed to the upper end of the movable plate 20. A spring 22 is fixed between the lower end of the movable plate 20 and the bottom of the mounting groove 21. The spring 22 is in a compressed state. The elastic force of the spring 22 pushes the movable plate 20, so that the limit key 24 always remains in the locking state with the limit groove, ensuring that the expansion block 23 is locked firmly. At the same time, it is convenient to disassemble and replace the expansion block 23, improving the flexibility of the expansion mechanism. When it is necessary to remove the expansion block 23, the movable plate 20 at the lower end of the limit key 24 can be manually pressed down.

[0035] Working principle: When using this device, the automotive parts to be inspected can be clamped using clamping plate 29 or clamping plate 28. Clamping is achieved by rotating the input end of the double-acting screw 30 or double-acting screw 27 on the outer wall using an external screw. When the automotive parts are small, clamping can be done using clamping plate 29 and one side clamping plate 28. When the automotive parts are large, both clamping plates 28 can be used. When the automotive parts are tall, extension block 23 can be inserted into the slot 25 on the surface of clamping plate 28. Limit key 24 automatically and elastically inserts into the bottom limit hole of extension block 23 to lock the height of clamping plate 28. With a longitudinal height of 28, after clamping, the hydraulic cylinder 2 can drive the motor 4 to move. There are high torque and low torque settings. High torque can be achieved by meshing gear 2 6 and gear 3 7. Low torque can be achieved by pushing the motor 4 to one side, so that gear 1 5 and gear 4 8 mesh. Then, the bidirectional lead screw 3 9 can be driven to rotate, so that the moving block 15 moves relative to it, realizing the pulling detection of the car parts. The pulling force value will be sensed by the torque sensor 18 and converted by the computer and displayed on the upper end of the controller 12, realizing the multi-functional high-precision detection of the tensile strength of the car parts, which has high practicality.

[0036] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision servo-controlled tension testing apparatus comprising a cabinet (1), characterized in that: The upper end of the box (1) is provided with a mounting bracket (10), a double-acting screw three (9) is rotatably mounted in the middle of the mounting bracket (10), a fixing block (14) is provided in the middle of the mounting bracket (10), and a moving block (15) is inserted into both sides inside the mounting bracket (10). A double-acting screw one (30) is provided at the upper end of the fixing block (14), and a clamping plate one (29) is threadedly connected to the surface of the double-acting screw one (30). A double-acting screw two (27) is provided at the upper end of the moving block (15), and a clamping plate two (28) is threadedly connected to the surface of the double-acting screw two (27). An extension mechanism is provided at the upper end of the clamping plate two (28). The mounting bracket (10) is provided with a drive system on one side. The drive system includes a motor (4) and a hydraulic cylinder (2). The hydraulic cylinder (2) is located on one side of the motor (4). A gear 1 (5) is fixed at the output end of the motor (4). A gear 2 (6) is axially fixed on one side of the gear 1 (5). A gear 4 (8) is axially fixed on one side of the double-acting screw 1 (30). A gear 3 (7) is axially fixed on one side of the gear 4 (8). When the gear 1 (5) meshes with the gear 4 (8), the gear 2 (6) and the gear 3 (7) separate. When the gear 2 (6) and the gear 3 (7) mesh, the gear 1 (5) and the gear 4 (8) separate.

2. The high-precision servo control tension testing equipment according to claim 1, characterized in that: The upper end of the housing (1) is provided with a guide rail (19), and the upper end of the guide rail (19) is connected to a mounting base (3). The output end of the hydraulic cylinder (2) is fixedly connected to one side of the mounting base (3), and the motor (4) is fixedly installed on the upper end of the mounting base (3).

3. The high-precision servo control tension testing apparatus according to claim 2, characterized in that: A hydraulic cylinder (16) is fixed on the upper surface of the housing (1). The hydraulic cylinder (16) is used in conjunction with the hydraulic cylinder (2). A control button (17) is provided on one side of the hydraulic cylinder (16).

4. The high-precision servo control tension testing apparatus according to claim 1, characterized in that: The upper end of the box (1) is provided with a controller (12), the side of the controller (12) is provided with a storage slot (11), and the bottom of the box (1) is fixed with a base (13).

5. The high-precision servo-controlled tensile testing device according to claim 1, characterized in that: The motor (4) has a torque sensor (18) at the rear shaft, and the torque sensor (18) is electrically connected to the controller (12).

6. The high-precision servo-controlled tensile testing device according to claim 1, characterized in that: The upper end of the fixing block (14) is provided with a connecting rod (31), which is longitudinally inserted into the inside of the clamping plate (29).

7. The high-precision servo-controlled tensile testing device according to claim 1, characterized in that: The upper end of the movable block (15) is connected to a connecting rod two (26), which is longitudinally inserted into the inside of the clamping plate two (28).

8. The high-precision servo-controlled tensile testing device according to claim 1, characterized in that: The expansion mechanism includes a slot (25) and an expansion block (23), the expansion block (23) being inserted into the slot (25), and the inner side of the expansion block (23) being horizontal to the inner side of the clamping plate (28).

9. A high-precision servo-controlled tensile testing device according to claim 8, characterized in that: The bottom of the expansion block (23) has a limiting groove, and a limiting key (24) with an elastic mechanism is inserted into one side of the slot (25). The limiting key (24) is inserted into the limiting groove.

10. A high-precision servo-controlled tensile testing device according to claim 1, characterized in that: The clamping plate (28) has an installation groove (21) on one side. A movable plate (20) is inserted into the installation groove (21). A limit key (24) is fixed to the upper end of the movable plate (20). A spring (22) is fixed between the lower end of the movable plate (20) and the bottom of the installation groove (21). The spring (22) is in a compressed state.

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