Jig for checking automobile parts

Abstract

The utility model discloses a jig for checking automobile parts, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a mounting seat, the mounting seat is internally provided with a chute, the interior of the chute is rotatably connected with a bidirectional screw rod, the bidirectional screw rod penetrates through the mounting seat, one end of the bidirectional screw rod is fixedly provided with a first turntable, and the other end of the bidirectional screw rod is fixedly provided with a second turntable. And two threaded sleeves are symmetrically arranged in the sliding groove, the two threaded sleeves are in threaded connection with a bidirectional lead screw, a supporting block is arranged in the sliding groove, one end of the top of the supporting block is fixedly connected with a bidirectional air cylinder, and an output rod of the bidirectional air cylinder is fixedly connected with a rack plate. According to the utility model, the bidirectional cylinder is started, the output rod of the bidirectional cylinder drives the rack plate to move on the threaded sleeve, and the driving gear is engaged with the rack plate, so that the driving gear drives the rotating shaft to rotate, and the rotating plate and the mounting frame rotate along with the rotating shaft, thereby adjusting the angle of the ejector rod, facilitating detection of different areas of the connecting rod circular hole, and improving the accuracy of the detection result.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts inspection technology, specifically to a fixture for inspecting automotive parts. Background Technology

[0002] Automotive parts are the various units that make up a car and the products that serve the car. After the automotive parts are manufactured, they are assembled. To ensure the smooth assembly of the parts and the safety and stability after assembly, the automotive parts need to be tested in advance before assembly.

[0003] According to CN222544595U, an automotive parts testing fixture includes a mounting plate and two linear motion components. The mounting plate has two aligned rectangular slots on its surface, and the two linear motion components are respectively disposed within these rectangular slots. This automotive parts testing fixture selects a qualified connecting rod and then adjusts the distance between two moving blocks using the two linear motion components to make the center distance between the two moving blocks consistent with the center distance of the connecting rod. Two centering components are used to adjust the distance between two first push rods and the distance between two second push rods. Through these adjustments, the two first push rods and the two second push rods are positioned within two circular holes of the connecting rod and in contact with the inner walls of the holes. For the same batch of connecting rods, untested connecting rods are placed on each connecting rod; if they move smoothly, they are considered qualified; otherwise, they are considered unqualified.

[0004] The connecting rod can be inspected using the aforementioned first and second push rods. However, during the machining of the connecting rod's circular hole, uneven wall thickness can easily occur due to operational errors. The sliding plate on the T-shaped guide rail makes it difficult to adjust the angles of the first and second push rods, thus reducing the accuracy of the inspection results. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for inspecting automotive parts, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixture for inspecting automotive parts, comprising a base plate, a mounting seat fixedly connected to the top of the base plate, a sliding groove provided inside the mounting seat, a bidirectional lead screw rotatably connected inside the sliding groove, the bidirectional lead screw passing through the mounting seat and having a first turntable fixedly mounted at one end of the bidirectional lead screw, two threaded sleeves symmetrically arranged inside the sliding groove, the two threaded sleeves being threadedly connected to the bidirectional lead screw, a support block provided inside the sliding groove, a bidirectional cylinder fixedly connected to the top end of the support block, a rack plate fixedly connected to the output rod of the bidirectional cylinder, and the rack plate slidably connected to the top of the threaded sleeve.

[0007] As a further preferred embodiment of this technical solution, two stabilizing rods are symmetrically arranged on the inner wall of the groove, the two stabilizing rods are located on both sides of the bidirectional lead screw, and the stabilizing rods are slidably connected to the threaded sleeve.

[0008] As a further preferred embodiment of this technical solution, a connecting frame is fixedly connected to the top of the threaded sleeve, and a rotating shaft is rotatably connected between the connecting frame and the threaded sleeve. A drive gear is fixedly sleeved on the surface of the rotating shaft, and the drive gear meshes with a rack plate.

[0009] As a further preferred embodiment of this technical solution, a rotating plate is fixedly connected to the top of the rotating shaft, a mounting bracket is fixedly connected to the top of the rotating plate, a worm gear is rotatably connected inside the mounting bracket, the worm gear passes through the mounting bracket and a second turntable is fixedly installed at one end of the worm gear.

[0010] As a further preferred embodiment of this technical solution, the mounting bracket is rotatably connected to a rotating sleeve, and a worm gear is fixedly sleeved on the surface of the rotating sleeve, with the worm gear meshing with the worm.

[0011] As a further preferred embodiment of this technical solution, two internal threads are symmetrically formed on both sides of the rotating sleeve. The internal threads of the two internal threads are connected to a screw rod. A push rod is fixedly connected to the end of the screw rod away from the rotating sleeve. A connecting plate is rotatably connected to the bottom of the push rod. A sliding rod is fixedly connected to the side of the connecting plate near the rotating sleeve. A sliding sleeve is slidably connected to the surface of the sliding rod. The end of the sliding sleeve away from the sliding rod is fixed to the mounting bracket.

[0012] As a further preferred embodiment of this technical solution, the top of the mounting base is provided with a groove, a scale is fixedly connected to the top of the groove, a pointer is slidably connected inside the groove, and the pointer is fixedly connected to a threaded sleeve.

[0013] This utility model provides a fixture for inspecting automotive parts, which has the following beneficial effects:

[0014] (1) By starting the bidirectional cylinder, the output rod of this utility model drives the rack plate to move on the threaded sleeve. Due to the meshing of the drive gear and the rack plate, the drive gear drives the rotating shaft to rotate, and the rotating plate and the mounting bracket rotate accordingly, thereby adjusting the angle of the push rod to facilitate the detection of different areas of the connecting rod hole and improve the accuracy of the detection results.

[0015] (2) By rotating the second turntable, the worm rotates accordingly. Due to the meshing of the worm wheel and the worm, the worm wheel drives the rotating sleeve to rotate. The screw and the internal thread are matched, so that while the rotating sleeve rotates, the screw rotates inside the internal thread and drives the push rod to move away from the mounting bracket. The slide rod slides inside the slide sleeve and limits and guides the movement of the push rod, thereby improving the convenience of adjusting the position of the push rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting base structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the threaded sleeve structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the drive gear and rack plate structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the unfolded structure of the rotating sleeve and top rod of this utility model.

[0021] In the diagram: 1. Base plate; 2. Mounting seat; 3. Slide groove; 4. Double-acting lead screw; 5. First turntable; 6. Stabilizing bar; 7. Support block; 8. Double-acting cylinder; 9. Rack plate; 10. Threaded sleeve; 11. Rotating shaft; 12. Drive gear; 13. Pointer; 14. Connecting frame; 15. Turning plate; 16. Mounting frame; 17. Worm gear; 18. Second turntable; 19. Rotating sleeve; 20. Internal thread; 21. Worm wheel; 22. Screw; 23. Top rod; 24. Connecting plate; 25. Slide rod; 26. Slide sleeve; 27. Groove; 28. Scale. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1 to 5 As shown, in this embodiment, the fixture for inspecting automotive parts includes a base plate 1. A mounting base 2 is fixedly connected to the top of the base plate 1. A groove 3 is provided inside the mounting base 2. A bidirectional lead screw 4 is rotatably connected inside the groove 3. The bidirectional lead screw 4 passes through the mounting base 2 and a first turntable 5 is fixedly installed at one end of the bidirectional lead screw 4. Two threaded sleeves 10 are symmetrically arranged inside the groove 3. The two threaded sleeves 10 are threadedly connected to the bidirectional lead screw 4. A support block 7 is provided inside the groove 3. A bidirectional cylinder 8 is fixedly connected to the top end of the support block 7. A rack plate 9 is fixedly connected to the output rod of the bidirectional cylinder 8. The rack plate 9 is slidably connected to the top of the threaded sleeve 10.

[0024] When the bidirectional cylinder 8 is activated, its output rod drives the rack plate 9 to move on the threaded sleeve 10. Due to the meshing of the drive gear 12 and the rack plate 9, the drive gear 12 drives the rotating shaft 11 to rotate, and the rotating plate 15 and the mounting bracket 16 rotate accordingly, thereby driving the push rod 23 to rotate inside the circular hole. This facilitates the detection of different areas of the connecting rod circular hole. A pressure sensor is set at the contact end between the push rod 23 and the circular hole. By observing whether the push rod 23 can rotate smoothly and the pressure data detected by the pressure sensor, the qualification of the circular hole can be checked to improve the accuracy of the detection results.

[0025] Two stabilizing rods 6 are symmetrically arranged on the inner wall of the slide groove 3. The two stabilizing rods 6 are located on both sides of the bidirectional lead screw 4, and the stabilizing rods 6 and the threaded sleeve 10 are slidably connected.

[0026] A connecting frame 14 is fixedly connected to the top of the threaded sleeve 10. A rotating shaft 11 is rotatably connected between the connecting frame 14 and the threaded sleeve 10. A drive gear 12 is fixedly sleeved on the surface of the rotating shaft 11. The drive gear 12 meshes with the rack plate 9.

[0027] Rotating the first turntable 5 causes the bidirectional lead screw 4 to rotate, and the two threaded sleeves 10 slide on the surface of the stabilizer 6 and move closer or further apart from each other, thereby adapting to the distance between the centers of the two circular holes on the connecting rod. The distance is precisely controlled by reading the scale on the ruler 28 corresponding to the pointer 13.

[0028] A rotating plate 15 is fixedly connected to the top of the rotating shaft 11, and a mounting bracket 16 is fixedly connected to the top of the rotating plate 15. A worm gear 17 is rotatably connected inside the mounting bracket 16. The worm gear 17 passes through the mounting bracket 16 and a second turntable 18 is fixedly installed at one end of the worm gear 17.

[0029] The mounting bracket 16 has a rotating sleeve 19 inside, and a worm gear 21 is fixedly sleeved on the surface of the rotating sleeve 19. The worm gear 21 meshes with the worm 17.

[0030] Two internal threads 20 are symmetrically opened on both sides of the rotating sleeve 19. The internal threads of the two internal threads 20 are connected to the screw 22. The end of the screw 22 away from the rotating sleeve 19 is fixedly connected to the push rod 23. The bottom of the push rod 23 is rotatably connected to the connecting plate 24. The side of the connecting plate 24 near the rotating sleeve 19 is fixedly connected to the slide rod 25. The surface of the slide rod 25 is slidably connected to the slide sleeve 26. The end of the slide sleeve 26 away from the slide rod 25 is fixed to the mounting bracket 16.

[0031] Rotating the second turntable 18 causes the worm gear 17 to rotate. Since the worm wheel 21 meshes with the worm gear 17, the worm wheel 21 drives the rotating sleeve 19 to rotate. The screw 22 and the internal thread 20 are matched, so that while the rotating sleeve 19 rotates, the screw 22 rotates inside the internal thread 20, and drives the push rod 23 to move away from the mounting bracket 16. The slide rod 25 slides inside the sliding sleeve 26 and limits and guides the movement of the push rod 23, thereby improving the convenience of adjusting the position of the push rod 23.

[0032] The top of the mounting base 2 has a groove 27, and a scale 28 is fixedly connected to the top of the groove 27. A pointer 13 is slidably connected inside the groove 27, and the pointer 13 is fixedly connected to the threaded sleeve 10.

[0033] This utility model provides a fixture for inspecting automotive parts, and its working principle is as follows:

[0034] In use, rotating the first turntable 5 causes the bidirectional lead screw 4 to rotate. The two threaded sleeves 10 slide on the surface of the stabilizer 6 and move closer or further apart to match the distance between the centers of the two circular holes on the connecting rod. Precise distance control is achieved by reading the scale on the ruler 28 corresponding to the pointer 13. After adjustment, the connecting rod is placed on the mounting base 2, and the second turntable 18 is rotated. The worm gear 17 rotates accordingly. Since the worm wheel 21 meshes with the worm gear 17, the worm wheel 21 drives the rotating sleeve 19 to rotate. The screw 22 matches the internal thread 20, so that while the rotating sleeve 19 rotates, the screw 22 rotates inside the internal thread 20, driving the top... The rod 23 moves away from the mounting bracket 16, and the slide rod 25 slides inside the sliding sleeve 26, limiting and guiding the movement of the push rod 23. After rotating a certain number of times, the push rod 23 contacts the inner wall of the round hole, and the connecting rod is removed. The same batch of connecting rods is tested using the distance between the two push rods 23 and the distance between the two threaded sleeves 10. If it can be installed smoothly, the bidirectional cylinder 8 is started, and its output rod drives the rack plate 9 to move on the threaded sleeve 10. The drive gear 12 drives the rotating shaft 11 to rotate, and the rotating plate 15 and the mounting bracket 16 rotate accordingly, thereby adjusting the angle of the push rod 23 and testing different areas of the connecting rod round hole to check whether it is qualified.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for inspecting automotive parts, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the mounting base (2). The mounting base (2) has a sliding groove (3) inside. A double-acting screw (4) is rotatably connected inside the sliding groove (3). The double-acting screw (4) passes through the mounting base (2) and a first turntable (5) is fixedly installed at one end of the double-acting screw (4). Two threaded sleeves (10) are symmetrically arranged inside the sliding groove (3). The two threaded sleeves (10) and the double-acting screw (4) are threadedly connected. A support block (7) is arranged inside the sliding groove (3). A double-acting cylinder (8) is fixedly connected to the top end of the support block (7). A rack plate (9) is fixedly connected to the output rod of the double-acting cylinder (8). The rack plate (9) is slidably connected to the top of the threaded sleeve (10).

2. The fixture for inspecting automotive parts according to claim 1, characterized in that: The inner wall of the groove (3) is symmetrically provided with two stabilizing rods (6), which are located on both sides of the bidirectional lead screw (4). The stabilizing rods (6) and the threaded sleeve (10) are slidably connected.

3. The fixture for inspecting automotive parts according to claim 1, characterized in that: A connecting frame (14) is fixedly connected to the top of the threaded sleeve (10). A rotating shaft (11) is rotatably connected between the connecting frame (14) and the threaded sleeve (10). A drive gear (12) is fixedly sleeved on the surface of the rotating shaft (11). The drive gear (12) meshes with the rack plate (9).

4. The fixture for inspecting automotive parts according to claim 3, characterized in that: A rotating plate (15) is fixedly connected to the top of the rotating shaft (11), and a mounting bracket (16) is fixedly connected to the top of the rotating plate (15). A worm gear (17) is rotatably connected inside the mounting bracket (16). The worm gear (17) passes through the mounting bracket (16) and a second turntable (18) is fixedly installed at one end of the worm gear (17).

5. The fixture for inspecting automotive parts according to claim 4, characterized in that: The mounting bracket (16) is rotatably connected to a rotating sleeve (19), and a worm gear (21) is fixedly sleeved on the surface of the rotating sleeve (19). The worm gear (21) meshes with the worm (17).

6. The fixture for inspecting automotive parts according to claim 5, characterized in that: The rotating sleeve (19) has two symmetrical internal threads (20) on both sides. The internal threads of the two internal threads (20) are connected to a screw (22). The end of the screw (22) away from the rotating sleeve (19) is fixedly connected to a top rod (23). The bottom of the top rod (23) is rotatably connected to a connecting plate (24). The side of the connecting plate (24) near the rotating sleeve (19) is fixedly connected to a sliding rod (25). The surface of the sliding rod (25) is slidably connected to a sliding sleeve (26). The end of the sliding sleeve (26) away from the sliding rod (25) is fixed to the mounting bracket (16).

7. The fixture for inspecting automotive parts according to claim 1, characterized in that: The mounting base (2) has a groove (27) on its top. A scale (28) is fixedly connected to the top of the groove (27). A pointer (13) is slidably connected inside the groove (27). The pointer (13) is fixedly connected to the threaded sleeve (10).

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