A testing device for a worm used for transmission of an automobile seat

Abstract

This invention discloses a testing device for a worm gear used in automotive seat transmissions, relating to the field of automotive worm gear testing technology. The device includes a base with a loading platform on it. Fixed seats and uprights are located at both ends of the base, respectively, on opposite sides of the loading platform. A drive screw is fixedly mounted in the middle of the base, and a slidable mounting seat is mounted on the drive screw. A base is fixedly mounted on the mounting seat, and a horizontal sliding rod is mounted on the base, slidably connected to the loading platform. A top plate is fixed on the base, and a second cylinder is mounted above the top plate. The output end of the second cylinder is connected to an inclined top block. This invention loads the worm gear onto the loading platform, and then moves the loading platform to deliver the worm gear to the testing station for overall strength testing, including impact resistance. The loading platform then delivers the worm gear to the upright for tooth strength testing. The testing process is monitored by intelligent sensors to accurately collect strength test data.

Description

Technical Field

[0001] This invention relates to the field of automotive worm gear testing technology, specifically a testing device for a worm gear used in automotive seat transmissions. Background Technology

[0002] As a key precision component in the steering system and power transmission mechanism, the machining accuracy of the automotive worm gear directly determines the vehicle's handling stability, transmission smoothness, and operational safety. A complete inspection must cover the following: First, check the worm gear surface for grinding cracks, dents, and rust spots. Confirm that the thread teeth are free of burrs, scratches, and machining burn marks, and that the shaft end mating parts are free of deformation and damage. Ensure that the markings are clear and complete to avoid visible appearance defects from directly affecting assembly and use.

[0003] Hardness testing is then required, but in the current technology, hardness testing is performed manually, which is inefficient and can easily cause injury during the testing process, making it unsuitable for mass production testing of automotive worm gears.

[0004] Therefore, it is necessary to design a testing device for the worm gear used in automotive seat transmission. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for a worm gear used in automotive seat transmission, in order to solve the problems in the prior art.

[0006] The objective of this invention can be achieved through the following technical solutions: This invention relates to the field of automotive worm gear testing technology, and provides a testing device for a worm gear used in automotive seat transmission. The testing device includes a base, a material platform on the base, and a fixed seat and a stand for worm gear testing at both ends of the base, which are located on both sides of the material platform. A drive screw is fixedly provided in the middle of the base, and a slidable mounting seat is provided on the drive screw. A base is fixedly provided on the mounting base, and a sliding rod is horizontally provided on the base. The sliding rod is slidably connected to the material platform. A top plate is fixed on the base, and a second cylinder is installed above the top plate. The output end of the second cylinder is connected to an inclined top block. A second side plate is installed on one side of the loading platform, and a first protrusion is installed on the second side plate. The first protrusion is slidably connected to the inclined surface of the inclined top block.

[0007] Furthermore, the base is equipped with feet at the bottom, a side plate is installed on one side of the base, a cylinder is fixed on the side plate, a spring is fitted on one end of the slide rod, one end of the spring is attached to one side of the material platform, and the other side of the material platform is attached to the base.

[0008] Furthermore, the loading platform is provided with a central groove, and the two ends of the central groove are provided with through grooves. The two sides of the central groove are provided with arc holes. A worm is horizontally placed in the through groove. A kit is provided in the middle of the worm. The kit is threadedly connected to the worm and fixed in the central groove.

[0009] Furthermore, the fixed base is provided with a sliding groove, a drive groove is provided on one side of the sliding groove, a bidirectional lead screw is rotatably provided in the drive groove, a motor is provided on one side of the fixed base, the output end of the motor is connected to the bidirectional lead screw, and moving blocks are symmetrically provided on the bidirectional lead screw, and the moving blocks are threadedly connected to the bidirectional lead screw. One side of the movable block is fixed with a gripper for holding the worm gear.

[0010] Furthermore, the mounting base is provided with a slot, a locking ring is provided above the slot, and a work position sensor is provided above the locking ring.

[0011] Furthermore, the support frame includes a main body, on which a support is fixedly mounted. A second motor is fixed to one side of the support. The output end of the second motor is connected to a rotating arm. A vision sensor is provided at the front end of the rotating arm, and a mounting groove is provided on the rotating arm.

[0012] Furthermore, a guide post is fixedly provided at one end of the mounting groove, and a spring is fitted on the guide post; an inclined groove is provided at the other end of the mounting groove, and an inclined post is fixedly provided in the inclined groove. A cylinder three is provided on the main body and below the rotating arm. The output end of the cylinder three is connected to a pressure block, and a limit plate is provided above the inclined groove.

[0013] Furthermore, a cylinder four is fixedly mounted on the main body, and the output end of the cylinder four is connected to an inclined surface; A slider is slidably provided in the mounting groove, which is slidably connected to the guide post, and the end of the slider abuts against the second spring.

[0014] Furthermore, the slider is provided with a through groove two, and a detection rod is rotatably provided in the through groove two. A torsion spring is fitted on the rotation shaft of the detection rod. An impact head is fixedly provided at one end of the detection rod, and a protrusion two is fixedly provided at the other end. The protrusion two cooperates with the inclined column.

[0015] Furthermore, the rear end of the detection rod is provided with a protrusion, which is slidably connected to the inclined surface.

[0016] The beneficial effects of this invention are: 1. The present invention provides a testing device for a worm gear for automotive seat transmission, wherein the worm gear is loaded onto a loading platform and then the loading platform is moved to send the worm gear to the testing station for overall strength testing and impact resistance testing. 2. The present invention provides a testing device for a worm gear for automotive seat transmission. The worm gear is fed into the upright through a material loading platform, and the tooth strength of the worm gear is tested. The testing process is monitored by intelligent sensors to accurately collect strength test data. 3. The present invention provides a testing device for a worm gear used in automotive seat transmission, wherein an impact head rapidly impacts the tooth to be tested on the worm gear, and an intelligent sensor collects the state parameters of the tooth after the impact, thereby completing the tooth strength test. This reduces manual testing work, improves testing efficiency, and meets the testing needs of mass production of worm gears. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the test device for the worm gear for automotive seat transmission of the present invention; Figure 2 This is a schematic diagram of the test device for the worm gear for automotive seat transmission of the present invention; Figure 3 This is the present invention. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the test device for the worm gear for automotive seat transmission of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the structure of the support frame of the present invention; Figure 7 This is a top view of the structure of the support frame of the present invention; Figure 8 This is the present invention. Figure 7 Schematic diagram of the cross section in the CC direction.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 2. Fixed base; 3. Carrying platform; 4. Upright frame; 5. Slider; 10. Cylinder II; 11. Foot; 12. Side plate I; 13. Cylinder I; 14. Drive screw; 15. Mounting base; 16. Base; 17. Slide rod; 18. Spring I; 19. Top plate; 21. Slide groove; 22. Drive groove; 23. Bidirectional screw; 24. Motor I; 25. Moving block; 26. Gripper; 27. Slot; 28. Locking ring; 29. ​​Station sensor; 31. Side plate II; 32. Protrusion I; 33. Arc hole; 34. Middle section 35. Through slot one; 36. Worm gear; 37. Kit; 40. Spring two; 41. Main body; 42. Support; 43. Motor two; 44. Rotating arm; 45. Vision sensor; 46. Cylinder three; 47. Pressure block; 48. Limiting plate; 49. Guide post; 51. Through slot two; 52. Detection rod; 53. Torsion spring; 54. Impact head; 55. Protrusion two; 56. Detection worm gear; 56. Protrusion; 57. Cylinder four; 58. Inclined surface; 110. Inclined top block; 441. Mounting slot; 442. Inclined slot; 443. Inclined post. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0021] A testing device for a worm gear used in automotive seat transmission, such as... Figure 1 As shown, the testing device includes a base 1, on which a material loading platform 3 is provided for supporting and moving the electric vehicle seat transmission worm gear 36, feeding the worm gear 36 into the testing station, automatically loading the material, and recording the test data through intelligent sensors to accurately detect the relevant parameters of the worm gear 36.

[0022] The base 1 has two test stations at both ends. The test stations include a fixed seat 2 and a stand 4 installed on the base 1. The fixed seat 2 and the stand 4 are located on both sides of the loading platform 3.

[0023] like Figure 2 , Figure 5 As shown, the base 1 is equipped with feet 11 at the bottom to stabilize the level of the base 1, improve the stability of the base, and provide an environment for the overall testing process. A side plate 12 is fixedly installed on one side of the base 1, and a cylinder 13 is fixedly installed on the side plate 12. A drive screw 14 is fixedly installed in the middle of the base 1, and a sliding mounting seat 15 is provided on the drive screw 14.

[0024] A base 16 is fixedly mounted on the mounting base 15. A slide rod 17 is horizontally mounted on the base 16. The slide rod 17 is slidably connected to the material platform 3. A spring 18 is fitted on one end of the slide rod 17. One end of the spring 18 is attached to one side of the material platform 3. The other side of the material platform 3 is attached to the base 16. A top plate 19 is fixedly mounted on the base 16. A cylinder 10 is fixedly mounted above the top plate 19. The output end of the cylinder 10 is connected to an inclined top block 110.

[0025] like Figure 4 , Figure 5 As shown, a side plate 31 is fixedly installed on one side of the loading platform 3, and a protrusion 32 is fixedly installed on the side plate 31. The protrusion 32 is slidably connected to the inclined surface of the inclined top block 110. It can move vertically through the output end of the cylinder 10 and move up and down through the inclined top block 110. The horizontal movement of the protrusion 32 can be controlled by the inclined surface cooperation.

[0026] The loading platform 3 is provided with a central groove 34, and through grooves 35 are provided at both ends of the central groove 34. Arc holes 33 are provided on both sides of the central groove 34. A horizontal worm gear 36 is placed in the through groove 35. A fitting 37 is provided in the middle of the worm gear 36. The fitting 37 is threadedly connected to the worm gear 36 and is fixed in the central groove 34.

[0027] like Figure 2 , Figure 3 As shown, a sliding groove 21 is provided on the fixed base 2, and a drive groove 22 is provided on one side of the sliding groove 21. A bidirectional lead screw 23 is rotatably provided in the drive groove 22. A motor 24 is provided on one side of the fixed base 2. The output end of the motor 24 is connected to the bidirectional lead screw 23. Moving blocks 25 are symmetrically arranged on the bidirectional lead screw 23. The moving blocks 25 are threadedly connected to the bidirectional lead screw 23. The motor 24 controls the rotation of the bidirectional lead screw 23, and then causes the two moving blocks 25 to move horizontally. The two moving blocks 25 can move towards each other or in opposite directions.

[0028] A gripper 26 is fixedly connected to one side of the movable block 25 for gripping the rear end of the worm 36, and the front end of the worm 36 is inserted into the fixed base 2.

[0029] The fixed base 2 has a slot 27, which is inserted into the front end of the worm 36 to fix the front end of the worm 36, thereby clamping both ends of the worm 36. A locking ring 28 is provided above the slot 27 to lock the front end of the worm 36. A station sensor 29 is provided above the locking ring 28 to detect whether the worm 36 is inserted into the slot 27, thus preventing material shortage at the test station.

[0030] During use, after the two ends of the worm 36 are fixed, the loading platform 3 is located at the output end of the cylinder 13. The cylinder 13 controls the loading platform 3 to move horizontally slightly on the slide bar 17, thereby causing the middle part of the worm 36 and the kit 37 to move slightly. The worm 36 is subjected to axial thrust, and the force-bearing capacity of the worm 36 can be detected, which can test the strength of the worm 36.

[0031] During the testing process, the output end of cylinder 2 10 retracts downward, reducing the height of the inclined block 110 and releasing the restriction on the loading platform 3. The movement speed is slowed down by spring 18 to prevent the worm gear 36 from breaking due to excessive thrust from cylinder 13. After the testing process, the loading platform 3 is reset by spring 18, and the output end of cylinder 2 10 is controlled to push the inclined block 110 upward to lock the loading platform 3.

[0032] like Figures 6-8 As shown, the support frame 4 includes a main body 41, a support 42 is fixedly mounted on the main body 41, a motor 43 is fixedly mounted on one side of the support 42, the output end of the motor 43 is connected to a rotating arm 44, a vision sensor 45 is provided at the front end of the rotating arm 44, an installation groove 441 is provided on the rotating arm 44, a guide post 49 is fixedly mounted at one end of the installation groove 441, and a spring 40 is fitted on the guide post 49.

[0033] An inclined groove 442 is provided at the other end of the mounting groove 441. An inclined column 443 is fixedly installed in the inclined groove 442. A cylinder 3 46 is provided on the main body 41 and below the rotating arm 44. A pressure block 47 is connected to the output end of the cylinder 3 46. The pressure block 47 slides along the arc hole 33 to clamp the two sides of the kit 37 and fix the kit 37 located at the test station. A limit plate 48 is provided above the inclined groove 442 to limit the vertical movement of the slider 5.

[0034] Among them, a cylinder 57 is fixedly installed on the main body 41, and the output end of the cylinder 57 is connected to an inclined surface 58.

[0035] A slider 5 is slidably provided in the mounting groove 441, which is slidably connected to the guide post 49, and the end of the slider 5 abuts against the second spring 40. The second spring 40 resets the slider 5, and the slider 5 moves horizontally in the mounting groove 441.

[0036] The slider 5 has a through groove 51, and a detection rod 52 is rotatably mounted in the through groove 51. A torsion spring 53 is mounted on the rotating shaft of the detection rod 52. An impact head 54 is fixed at one end of the detection rod 52, and a protrusion 55 is fixed at the other end. As the slider 5 moves, the protrusion 55 contacts the inclined column 443, which pushes the detection rod 52 to rotate, so that the impact head 54 presses against the worm gear 36 to detect whether the teeth of the worm gear 36 are pressure resistant and to test the strength of the teeth.

[0037] A protrusion 56 is provided at the rear end of the detection rod 52. The protrusion 56 is slidably connected to the inclined surface 58, and then the detection rod 52 is controlled to move within the mounting groove 441.

[0038] When using: The worm gear 36 for the transmission of the car seat to be tested is pre-placed in the through slot 35 of the loading platform 3. The pre-positioning of the worm gear 36 on the loading platform 3 is completed by the kit 37. Then the drive screw 14 is started, which drives the mounting base 15 to move as a whole, and transports the loading platform 3 to the corresponding test station, so that the front end of the pre-fixed worm gear 36 is aligned with the slot 27 on the fixing base 2.

[0039] At this time, motor 24 on one side of fixed seat 2 starts, driving the bidirectional lead screw 23 to rotate, which in turn drives the two moving blocks 25 to move the grippers 26 towards each other, clamping the rear end of the worm gear 36. Locking ring 28 locks the front end of the worm gear 36. After the station sensor 29 detects that the worm gear 36 is installed in place, the loading platform 3 unlocks and enters the test process. First, an axial strength test is performed. The output end of cylinder 10 retracts, the inclined block 110 moves upward to release the restriction on the protrusion 32, and the spring 18, in conjunction with cylinder 13, pushes the loading platform 3 to move slightly horizontally along the slide rod 17, applying a stable axial thrust to the worm 36. The deformation and force data of the worm 36 are collected by the intelligent sensor to complete the axial strength test. After the test is completed, cylinder 13 resets, spring 18 drives the loading platform 3 back to its original position, and the output end of cylinder 10 extends to relock the loading platform 3.

[0040] Subsequently, the tooth strength test is performed. Cylinder 3 46 drives the pressure block 47 to move down along the arc hole 33, clamping and locking both sides of the kit 37 to prevent the worm gear 36 from shifting as a whole. Motor 2 43 starts and drives the rotating arm 44 to rotate to the test position. Then, the output end of cylinder 4 57 extends and pushes the protrusion 56 through the inclined surface 58, causing the slider 5 to move along the guide post 49 and compress the spring 2 40 in the mounting groove 441. During the movement, the protrusion 2 55 of the detection rod 52 contacts the inclined post 443. Under the push of the inclined post 443, the detection rod 52 twists around the rotation axis. The impact head 54 quickly impacts the tooth of the worm gear 36 to be tested. The intelligent sensor collects the state parameters of the tooth after the impact to complete the tooth strength test. After the test is completed, the output end of cylinder 457 retracts, spring 240 pushes slider 5 to reset, torsion spring 53 drives detection rod 52 to reset, rotating arm 44 rotates back to its original position, pressure block 47 rises to release the lock on kit 37, locking ring 28 and gripper 26 release worm gear 36, drive screw 14 to move loading platform 3 to unloading position, completing a single test process, and the next test operation can be started.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A testing device for a worm gear used in automotive seat transmission, characterized in that, The testing device includes a base (1), a material platform (3) is provided on the base (1), and a fixed seat (2) and a stand (4) for worm gear testing are respectively provided at both ends of the base (1). The fixed seat (2) and the stand (4) are located on both sides of the material platform (3). The base (1) is fixedly provided with a drive screw (14) in the middle, and a slidable mounting seat (15) is provided on the drive screw (14). The mounting base (15) is fixedly provided with a base (16), and a sliding rod (17) is horizontally provided on the base (16). The sliding rod (17) is slidably connected to the material platform (3). A top plate (19) is fixed on the base (16), and a cylinder (10) is installed above the top plate (19). The output end of the cylinder (10) is connected to an inclined top block (110). A side plate (31) is installed on one side of the loading platform (3), and a protrusion (32) is installed on the side plate (31). The protrusion (32) is slidably connected to the inclined surface of the inclined top block (110).

2. The testing device for a worm gear for automotive seat transmission according to claim 1, characterized in that, The base (1) is equipped with a foot (11) at the bottom. A side plate (12) is installed on one side of the base (1). A cylinder (13) is fixed on the side plate (12). A spring (18) is fitted on one end of the slide rod (17). One end of the spring (18) is attached to one side of the material platform (3). The other side of the material platform (3) is attached to the base (16).

3. The testing device for a worm gear for automotive seat transmission according to claim 2, characterized in that, The loading platform (3) is provided with a central groove (34), and through grooves (35) are provided at both ends of the central groove (34). Arc holes (33) are provided on both sides of the central groove (34). A worm (36) is horizontally placed in the through groove (35). A kit (37) is provided in the middle of the worm (36). The kit (37) is threadedly connected to the worm (36) and fixed in the central groove (34).

4. The testing device for a worm gear for automotive seat transmission according to claim 3, characterized in that, The fixed base (2) is provided with a sliding groove (21), and a drive groove (22) is provided on one side of the sliding groove (21). A two-way lead screw (23) is rotatably provided in the drive groove (22). A motor (24) is provided on one side of the fixed base (2). The output end of the motor (24) is connected to the two-way lead screw (23). A moving block (25) is symmetrically provided on the two-way lead screw (23). The moving block (25) is threadedly connected to the two-way lead screw (23). One side of the movable block (25) is fixed with a gripper (26) for gripping the worm (36).

5. The testing device for a worm gear for automotive seat transmission according to claim 4, characterized in that, The fixed base (2) is provided with a slot (27), a locking ring (28) is provided above the slot (27), and a work position sensor (29) is provided above the locking ring (28).

6. The testing device for a worm gear for automotive seat transmission according to claim 1, characterized in that, The support frame (4) includes a main body (41), a support (42) is fixed on the main body (41), a motor (43) is fixed on one side of the support (42), a rotating arm (44) is connected to the output end of the motor (43), a vision sensor (45) is provided at the front end of the rotating arm (44), and a mounting groove (441) is provided on the rotating arm (44).

7. The testing device for a worm gear for automotive seat transmission according to claim 6, characterized in that, One end of the mounting groove (441) is fixedly provided with a guide post (49), and a spring (40) is fitted on the guide post (49). The other end of the mounting groove (441) is provided with an inclined groove (442), and an inclined post (443) is fixedly provided in the inclined groove (442). A cylinder three (46) is provided on the main body (41) and below the rotating arm (44). The output end of the cylinder three (46) is connected to a pressure block (47), and a limit plate (48) is provided above the inclined groove (442).

8. The testing device for a worm gear for automotive seat transmission according to claim 7, characterized in that, The main body (41) is fixedly provided with cylinder four (57), and the output end of cylinder four (57) is connected to an inclined surface (58). The mounting groove (441) is slidably provided with a slider (5), which is slidably connected to the guide post (49), and the end of the slider (5) abuts against the second spring (40).

9. The testing device for a worm gear for automotive seat transmission according to claim 8, characterized in that, The slider (5) is provided with a through groove (51), and a detection rod (52) is rotatably provided in the through groove (51). A torsion spring (53) is fitted on the rotation shaft of the detection rod (52). An impact head (54) is fixedly provided at one end of the detection rod (52), and a protrusion (55) is fixedly provided at the other end. The protrusion (55) cooperates with the inclined column (443).

10. A testing device for a worm gear for automotive seat transmission according to claim 9, characterized in that, The rear end of the detection rod (52) is provided with a protrusion (56), which is slidably connected to the inclined surface (58).

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