A concentricity detection device for a disc hub semi-finished product
Patent Information
- Application Number
- CN202522299568.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-10-30
AI Technical Summary
[0015] This utility model is reasonably designed. It uses a workpiece holder to clamp the semi-finished workpiece of the disc hub part. The workpiece holder can carry the semi-finished workpiece to rotate in a plane. The concentricity is reflected by the linear motion of the straight rod through the straight rod. The displacement sensor detects the movement range of the straight rod, thereby judging the quality of the concentricity of the semi-finished workpiece. This utility model is easy to operate and has high testing efficiency. Workers only need to complete the disassembly and assembly of the semi-finished workpiece of the disc hub part. The quality of the part is displayed by the judgment indicator light, and the result is intuitive and clear.
Smart Images
Figure CN224861094U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts manufacturing technology, and more specifically, to a concentricity detection device for semi-finished wheel hub products. Background Technology
[0002] The clutch is an important transmission component used in automobiles, and the clutch disc hub is a crucial part of the clutch. For example... Figure 4 The disc hub part shown is a semi-finished product that has just been initially produced. Its characteristic is that the disc surface at the top of the disc has an inner hole in the center. In actual production, the inner hole and the outer wall of the disc have a high requirement for concentricity. When producing disc hub parts, our company requires that the concentricity of the semi-finished products be checked in time so that defective products can be selected in time to prevent waste in subsequent processing. The concentricity test of the semi-finished disc hub parts needs to be completed by workers in the workshop. Therefore, designing a device that is easy to operate and has high testing efficiency is an urgent need for workshop production. This case was born out of this need. Utility Model Content
[0003] The purpose of this invention is to address the needs of the prior art by providing a concentricity detection device for semi-finished disc hub parts. This invention uses a workpiece holder to clamp the semi-finished disc hub parts, which can carry the semi-finished workpiece to rotate in a plane. The concentricity is reflected by the linear motion of the straight rod through a straight rod moving mechanism. The movement range of the straight rod is detected by a displacement sensor, thereby determining the quality of the concentricity of the semi-finished workpiece. This invention can meet the needs of efficient and convenient detection.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A concentricity detection device for a semi-finished disc hub includes a base plate, a workpiece clamping mechanism, a straight rod moving mechanism, and a displacement sensor. The workpiece clamping mechanism includes a rotatably mounted workpiece seat, on which the semi-finished disc hub is clamped and fixed. The straight rod moving mechanism includes a straight rod that is linearly mounted. The straight rod is arranged laterally, with one end of the straight rod abutting against the outer wall of the semi-finished disc hub and the other end abutting against the contact of the displacement sensor.
[0006] Furthermore, a rotating shaft is vertically connected to the bottom of the workpiece seat, and a bearing base is fixedly installed on the base plate. The workpiece seat is rotatably connected to the bearing base via the rotating shaft.
[0007] Furthermore, the workpiece seat includes a main seat body and a gauge seat. The diameter of the main seat body is larger than that of the gauge seat. The gauge seat is fixedly connected to the top of the main seat body. The semi-finished disc hub includes a disc body. The disc body has an inner hole in the center of the disc surface. The diameter of the gauge seat matches the size of the standard inner hole. The connection of the gauge seat forms a pressing step on the top of the main seat body. A pressure cap is installed on the gauge seat. The semi-finished disc hub is fitted onto the outside of the gauge seat and clamped and fixed to the pressing step by the pressure cap.
[0008] Furthermore, the gauge seat has a threaded hole in the center, which extends downward into the main body. A stud is connected to the inner side of the gland, and the stud engages with the threaded hole to form a spiral installation of the gland.
[0009] Furthermore, a rubber pad is fixed to the bottom surface of the pressure cap.
[0010] Furthermore, a screw-in assist plate is vertically installed on the top of the pressure cap.
[0011] Furthermore, the straight rod moving mechanism also includes a straight moving bracket assembly, which includes two vertically parallel frame bodies. Two parallel and laterally installed guide rods are fixedly connected between the two frame bodies. A movable seat is slidably mounted on the two guide rods. The straight rod is fixedly connected to the movable seat and is installed through the two frame bodies. Springs are fitted on the outer sides of the two guide rods. The straight rod moves towards the workpiece seat by the elastic force of the springs.
[0012] Furthermore, one end of the straight rod is rounded and the other end is flat. The rounded end of the straight rod abuts against the outer wall of the disc, and the flat end of the straight rod abuts against the contact of the displacement sensor.
[0013] Furthermore, a discrimination indicator light is installed on the side of the displacement sensor.
[0014] The beneficial effects of this utility model are:
[0015] This utility model is reasonably designed. It uses a workpiece holder to clamp the semi-finished workpiece of the disc hub part. The workpiece holder can carry the semi-finished workpiece to rotate in a plane. The concentricity is reflected by the linear motion of the straight rod through the straight rod. The displacement sensor detects the movement range of the straight rod, thereby judging the quality of the concentricity of the semi-finished workpiece. This utility model is easy to operate and has high testing efficiency. Workers only need to complete the disassembly and assembly of the semi-finished workpiece of the disc hub part. The quality of the part is displayed by the judgment indicator light, and the result is intuitive and clear. Attached Figure Description
[0016] Figure 1 This is a top view of a concentricity detection device for a semi-finished disc hub in this embodiment.
[0017] Figure 2 This is a schematic diagram of the workpiece clamping mechanism in this embodiment;
[0018] Figure 3 This is a side view of the straight rod moving mechanism in this embodiment;
[0019] Figure 4 This is a cross-sectional view of a semi-finished disc hub part.
[0020] Reference numerals: Base plate 1, workpiece clamping mechanism 2, workpiece seat 21, rotating shaft 211, main seat body 212, gauge seat 213, threaded hole 2131, clamping step 214, bearing base 22, pressure cap 23, stud 231, rubber pad 232, turning assist plate 233, straight rod moving mechanism 3, straight rod 31, round head 311, flat head 312, straight moving bracket assembly 32, upright body 321, guide rod 322, moving seat 323, spring 324, discrimination indicator light 33, displacement sensor 4, disc body 501, inner hole 502. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] like Figures 1-3 The device shown is a concentricity detection device for a semi-finished disc hub, comprising a base plate 1, a workpiece clamping mechanism 2, a straight rod moving mechanism 3, and a displacement sensor 4. The base plate 1 has bolt holes for fixed installation on a workbench. Other components are mounted on the base plate 1 so that the entire device can be transported and fixed as a whole. The workpiece clamping mechanism 2 includes a rotatably mounted workpiece seat 21, on which the semi-finished disc hub is clamped and fixed. The semi-finished disc hub can rotate together with the workpiece seat 21. The straight rod moving mechanism 3 includes a linearly movable straight rod 31, which is arranged laterally. One end of the straight rod 31 abuts against the outer wall of the semi-finished disc hub, and the other end abuts against the contact of the displacement sensor 4. During the rotation of the semi-finished disc hub, the kinetic energy caused by the concentricity deviation is reflected in the lateral linear movement of the straight rod 31. The displacement sensor 4 determines the concentricity quality of the semi-finished disc hub by detecting the amount of lateral linear movement of the rod 31.
[0023] like Figure 2As shown, a rotating shaft 211 is vertically connected to the bottom of the workpiece seat 21, and a bearing base 22 is fixedly installed on the base plate 1. The workpiece seat 21 is rotatably connected to the bearing base 22 through the rotating shaft 211. The workpiece seat 21 can realize planar rotational motion, thereby driving the semi-finished disc hub it carries to also realize planar rotational motion.
[0024] like Figure 2 As shown, the workpiece holder 21 includes a main seat 212 and a gauge seat 213. A rotating shaft 211 is fixedly connected to the center of the bottom surface of the main seat 212. The diameter of the main seat 212 is larger than that of the gauge seat 213. The gauge seat 213 connects to form a pressing step 214 on the top of the main seat 212. The gauge seat 213 is fixedly connected to the top of the main seat 212. Figure 4 As shown, the semi-finished disc hub includes a disc body 501, with an inner hole 502 in the center of the disc surface. Concentricity testing refers to checking the concentricity between the inner hole 502 and the outer diameter of the disc body 501. If the concentricity deviation exceeds the design value, it is judged as a defective part and can be directly intercepted at the source without being transferred to subsequent processes, thus preventing waste of subsequent processing costs. The gauge seat 213 of this utility model is a standard-sized part, and its diameter is designed to match the size of the standard inner hole 502. When clamping the semi-finished disc hub workpiece, the inner hole 502 needs to be installed on the outside of the gauge seat 213. If the semi-finished disc hub workpiece cannot be installed or shakes too much after installation, it proves that the size of the inner hole 502 is substandard, and the semi-finished disc hub workpiece can be directly judged as unqualified. A pressure cap 23 is installed on the gauge seat 213. The semi-finished disc hub is fitted onto the outside of the gauge seat 213 and clamped and fixed to the clamping step 214 by the pressure cap 23, achieving a fixed connection, so that it can rotate with the plane of the workpiece seat 21. Figure 2 As shown, this utility model has a threaded hole 2131 in the center of the gauge seat 213, which extends downward into the main body 212. A stud 231 is connected to the inner side of the pressure cover 23, and the stud 231 engages with the threaded hole 2131 to form a spiral installation of the pressure cover 23. The pressure cover 23 clamps the disc surface of the semi-finished disc hub with its bottom surface. This utility model has a rubber pad 232 fixed on the bottom surface of the pressure cover 23. The rubber pad 232 is relatively soft, which ensures the clamping requirement without damaging the semi-finished disc hub. This utility model also has a screwing assist plate 233 vertically installed on the top of the pressure cover 23, which can be easily screwed by hand.
[0025] like Figure 1 and Figure 3As shown, the straight rod moving mechanism 3 also includes a straight moving bracket assembly 32. The straight moving bracket assembly 32 includes two vertically parallel upright frames 321. The bottom of the upright frames 321 is fixedly connected to the base plate 1. Two parallel and horizontally installed guide rods 322 are fixedly connected between the two upright frames 321. A movable seat 323 is slidably mounted on the two guide rods 322. A straight rod 31 is installed between the two guide rods 322 and is fixedly connected to the movable seat 323, and can move together with the movable seat 323. The straight rod 31 is installed by passing through the two upright frames 321. 23 is fitted with guide rod 322. Guide rod 322 serves as a motion guide for moving seat 323, ultimately enabling straight rod 31 to move laterally in a straight line. Springs 324 are fitted on the outer sides of both guide rods 322. The elastic force of the springs 324 pushes the straight rod 31 towards workpiece seat 21. That is, after the disc hub semi-finished product is installed, one end of the straight rod 31 can remain in contact with the outer wall of the disc body 501. In this invention, one end of the straight rod 31 is designed as a round head 311, and the other end is designed as a flat head 312. The round head 311 of the straight rod 31 abuts against the disc body 501. The outer wall of rod 1 is designed to ensure contact without creating significant frictional resistance, thus not affecting the rotation of the semi-finished disc. The flat head 312 of the straight rod 31 abuts against the contact of the displacement sensor 4. This design ensures that the displacement data of the straight rod 31 can be monitored by the displacement sensor 4. When using this invention, the semi-finished disc is manually pushed to rotate, generally 1-2 rotations are sufficient. Before rotation, the data acquisition function of the displacement sensor 4 should be activated. The semi-finished disc can also be driven by a motor and gears, but due to the requirement for fewer rotations and no need for uniform rotation, enterprises still prefer to use the latter. In manual pushing mode, as the semi-finished disc rotates, a small displacement of the straight rod 31 will inevitably occur due to concentricity deviation. This displacement data is collected by displacement sensor 4, which can be connected to a portable small computer (not shown in the figure). The collected data is processed and judged in the computer software. If the displacement data exceeds the set value, it means that the concentricity deviation is excessive (it could also be that the outer wall roundness of the disc 501 is insufficient, but this is also a defective part and needs to be judged as a defective part). It is then judged as a defective part. Figure 1 As shown, a judgment indicator 33 is installed on the side of the displacement sensor 4. The computer judgment result is displayed on the judgment indicator 33. A green light indicates that it is qualified and a red light indicates that it is unqualified. Unqualified parts are specially removed and stored for centralized processing.
[0026] This invention is simple to operate. Workers only need to disassemble and replace the semi-finished disc hub workpiece. The judgment result is clear. The workpiece condition can be judged according to the judgment indicator 33. After applying this invention, workers can quickly and efficiently complete the concentricity detection of the semi-finished disc hub workpiece in the workshop.
[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A concentricity detection device for a semi-finished disc hub, characterized in that, The device includes a base plate (1), a workpiece clamping mechanism (2), a straight rod moving mechanism (3), and a displacement sensor (4). The workpiece clamping mechanism (2) includes a workpiece seat (21) that is rotatably mounted, and the disc hub semi-finished product is clamped and fixed to the workpiece seat (21). The straight rod moving mechanism (3) includes a straight rod (31) that is linearly mounted. The straight rod (31) is arranged laterally, with one end of the straight rod (31) abutting against the outer wall of the disc hub semi-finished product, and the other end of the straight rod (31) abutting against the contact of the displacement sensor (4).
2. The concentricity detection device for a semi-finished disc hub according to claim 1, characterized in that, The bottom of the workpiece seat (21) is vertically connected to a rotating shaft (211), and a bearing base (22) is fixedly installed on the base plate (1). The workpiece seat (21) is rotatably connected to the bearing base (22) through the rotating shaft (211).
3. The concentricity detection device for a semi-finished disc hub according to claim 1, characterized in that, The workpiece seat (21) includes a main seat body (212) and a gauge seat (213). The diameter of the main seat body (212) is larger than that of the gauge seat (213). The gauge seat (213) is fixedly connected to the top of the main seat body (212). The semi-finished disc hub includes a disc body (501). The disc body (501) has an inner hole (502) in the center of the disc surface. The diameter of the gauge seat (213) matches the size of the standard inner hole (502). The connection of the gauge seat (213) forms a pressing step (214) on the top of the main seat body (212). A pressure cap (23) is installed on the gauge seat (213). The semi-finished disc hub is fitted on the outside of the gauge seat (213) and clamped and fixed to the pressing step (214) by the pressure cap (23).
4. The concentricity detection device for a semi-finished disc hub according to claim 3, characterized in that, The gauge seat (213) has a threaded hole (2131) in the center, which extends downward into the main body (212). The inner side of the pressure cap (23) is connected to a stud (231), which engages with the threaded hole (2131) to form a spiral installation of the pressure cap (23).
5. The concentricity detection device for a semi-finished disc hub according to claim 3, characterized in that, A rubber pad (232) is fixed to the bottom surface of the pressure cap (23).
6. The concentricity detection device for a semi-finished disc hub according to claim 3, characterized in that, A screw-on assist plate (233) is vertically installed on the top of the pressure cap (23).
7. The concentricity detection device for a semi-finished disc hub according to claim 1, characterized in that, The straight rod moving mechanism (3) further includes a straight moving bracket assembly (32), which includes two vertically parallel upright frames (321). Two parallel and horizontally installed guide rods (322) are fixedly connected between the two upright frames (321). A movable seat (323) is slidably mounted on the two guide rods (322). The straight rod (31) is fixedly connected to the movable seat (323). The straight rod (31) is installed through the two upright frames (321). Springs (324) are fitted on the outside of the two guide rods (322). The straight rod (31) moves towards the workpiece seat (21) by the elastic force of the springs (324).
8. The concentricity detection device for a semi-finished disc hub according to claim 3, characterized in that, The straight rod (31) has a round head (311) at one end and a flat head (312) at the other end. The round head (311) of the straight rod (31) abuts against the outer wall of the disk (501), and the flat head (312) of the straight rod (31) abuts against the contact of the displacement sensor (4).
9. The concentricity detection device for a semi-finished disc hub according to claim 1, characterized in that, The displacement sensor (4) is equipped with a discrimination indicator light (33) on its side.