Automobile rear wheel cover detection tool
By designing a tooling fixture for inspecting automotive rear wheel covers, and using a contour plate and clamping mechanism to position and hold the workpiece, the problems of low inspection efficiency and low accuracy in existing inspection methods are solved, achieving fast and accurate inspection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN RUIZHIJIHE PRECISION MASCH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-19
AI Technical Summary
Existing methods for inspecting rear wheel arch covers are inefficient and inaccurate, especially since manual flipping is required when changing the inspection position, which affects measurement accuracy.
A tooling for inspecting automotive rear wheel arches was designed, comprising a base, a support, a contour plate, a clamping mechanism, and an inspection mechanism. The contour plate is used to position and clamp the workpiece, and the clamping mechanism and inspection mechanism are used to quickly inspect the slot positions and external contours of the workpiece.
It improves detection efficiency and accuracy, enabling rapid and precise detection of workpieces and avoiding measurement errors caused by manual flipping.
Smart Images

Figure CN224262384U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection tool technology, specifically to an inspection tooling for automobile rear wheel arches. Background Technology
[0002] The rear wheel arch cover is a key component covering the rear wheel area, and its commonly used materials include engineering plastics, aluminum alloys, and carbon fiber composites. Manufacturing processes often employ deep drawing, combined with welded brackets to enhance rigidity. Complex shapes rely on SMC composite materials or injection molding technology. The rear wheel arch cover effectively blocks sand, gravel, and mud kicked up by the tires from impacting the body panels, reducing the risk of paint scratches and corrosion, while also minimizing damage to chassis piping and the suspension system from foreign objects. Some models utilize a streamlined structure to guide airflow, reducing wind noise and improving high-speed stability. Therefore, during production, it is necessary to check whether the positions of the slots and holes on the workpiece surface meet tolerances to avoid excessive tolerances affecting subsequent installation.
[0003] Most existing inspection methods use coordinate measuring machines (CMMs) for inspection, which require the simultaneous measurement of multiple parameters, resulting in low inspection efficiency. Furthermore, when changing the inspection position, the workpiece needs to be manually flipped, affecting the measurement accuracy. Utility Model Content
[0004] The purpose of this invention is to solve the problems of low efficiency and low accuracy in the existing detection of automotive rear wheel arches.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A tooling for inspecting rear wheel arches of automobiles includes a base, a support seat fixedly connected to the top edge of the base, several first mounting seats provided on both sides of the support seat, a contour plate fixedly connected between the top of the support seat and the first mounting seats, several first clamping mechanisms provided around the top of the first mounting seats and the contour plate, a second clamping mechanism provided on the top of the support seat, several second mounting seats fixedly connected around the contour plate on the top of the base, a detection mechanism fixedly connected to the top of the second mounting seats, and a pair of positioning platforms fixedly connected to the base.
[0007] Furthermore, the detection mechanism includes a connecting seat, the bottom of which is fixedly connected to a second mounting seat. A movable plate is hinged to the top of the connecting seat on the side away from the contour plate. A contour connecting plate is detachably connected to the top of the movable plate on the side facing the contour plate. A guide seat is fixedly connected to the other end of the contour connecting plate. Several spring detection pins are fixedly connected to the top of the guide seat.
[0008] Furthermore, a limiting block is fixedly connected to the bottom of the connecting seat on the side away from the contour plate, and the limiting block has an inclined surface on the side wall facing the movable plate.
[0009] Furthermore, the first clamping mechanism is a clamp, and the second clamping mechanism is an elastic clamping assembly, both of which have rubber heads at their clamping ends.
[0010] Furthermore, the positioning platform is located on the inner bottom side of the contour plate.
[0011] Furthermore, it also includes a flatness detection block, on the side of the flatness detection block away from the detection surface, a handle is fixedly connected.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. The automotive rear wheel cover inspection fixture of this utility model, by being equipped with a first clamping mechanism, a second clamping mechanism, a positioning stage and a contour plate, can quickly position and clamp the workpiece, thereby improving positioning accuracy and inspection efficiency.
[0014] 2. The automotive rear wheel cover inspection fixture of this utility model, by setting up several inspection mechanisms surrounding the contour plate, can quickly inspect the position of the slots and the outline of the workpiece surface, thus greatly improving the inspection efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a vehicle rear wheel arch inspection fixture according to the present invention;
[0016] Figure 2 This is a schematic diagram of the assembly structure of a vehicle rear wheel arch inspection fixture according to the present invention;
[0017] Figure 3 This is a top view schematic diagram of a tooling for inspecting rear wheel arches of automobiles according to the present invention;
[0018] Figure 4 This is a schematic diagram of the rear structure of a vehicle rear wheel arch inspection fixture according to the present invention.
[0019] Figure 5 This is an enlarged schematic diagram of section A of the automotive rear wheel arch inspection fixture of this utility model;
[0020] Figure 6 This is a schematic diagram of the flatness detection block structure of a vehicle rear wheel arch inspection fixture according to the present invention.
[0021] Figure 7 This is a schematic diagram of the testing mechanism of a vehicle rear wheel cover testing fixture according to the present invention.
[0022] Reference numerals in the attached drawings: 1. Base; 2. Support seat; 3. First mounting seat; 4. Clamp; 5. Detection mechanism; 501. Connecting seat; 502. Movable plate; 503. Limiting block; 504. Contour connecting plate; 505. Guide seat; 506. Spring detection pin; 6. Contour plate; 7. Positioning stage; 8. Elastic clamping assembly; 9. Flatness detection block; 10. Second mounting seat. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0024] refer to Figure 1-5 The automotive rear wheel arch inspection fixture of this embodiment includes a base 1. A support seat 2 is fixedly connected to the top edge of the base 1 for supporting the workpiece to be tested. Several first mounting seats 3 are provided on both sides of the support seat 2. A contour plate 6 is fixedly connected between the top of the support seat 2 and the first mounting seats 3 for fitting and positioning the contour of the workpiece to be tested. Several first clamping mechanisms are provided around the top of the first mounting seats 3 around the contour plate 6. A second clamping mechanism is provided on the top of the support seat 2 for clamping the workpiece to be tested after positioning. Several second mounting seats 10 are fixedly connected around the top of the base 1 around the contour plate 6. A detection mechanism 5 is fixedly connected to the top of the second mounting seats 10 for detecting the slot position of the workpiece to be tested. A pair of positioning platforms 7 are provided on the top of the base 1 for positioning the workpiece to be tested. During testing, clamp 4, elastic clamping assembly 8, and testing mechanism 5 are all opened. The workpiece to be tested is then placed on top of support base 2. During placement, positioning table 7 is inserted into the bottom of the workpiece to be tested for positioning, ensuring that the bottom surface of the workpiece is in contact with the top surface of positioning table 7. Then, the first clamping mechanism and the second clamping mechanism are closed, and the workpiece to be tested is clamped and fixed by the clamping ends of the first clamping mechanism and the second clamping mechanism (during clamping, a certain gap is maintained between the edge of the workpiece to be tested and the contour plate 6). After clamping, testing mechanism 5 is closed to detect the position of the slots on the surface of the workpiece to be tested. Then, the go gauge and the alignment gauge are inserted into the gap between the surface of the workpiece to be tested and the contour plate 6 to detect the outer contour of the workpiece, thereby achieving rapid and accurate detection of the workpiece.
[0025] refer to Figure 7The detection mechanism 5 includes a connecting seat 501. The bottom of the connecting seat 501 is fixedly connected to the second mounting seat 10. A movable plate 502 is hinged to the top of the connecting seat 501 on the side away from the contour plate 6. A contour connecting plate 504 is detachably connected to the top of the movable plate 502 on the side facing the contour plate 6. A guide seat 505 is fixedly connected to the other end of the contour connecting plate 504. Several spring detection pins 506 are fixedly connected to the top of the guide seat 505. A limiting block 503 is fixedly connected to the bottom of the connecting seat 501 on the side away from the contour plate 6. The limiting block 503 is inclined downward on the side wall facing the movable plate 502. During testing, the movable plate 502 is rotated around the connecting seat 501 to the side away from the limiting block 503. When the movable plate 502 rotates, it drives the contour connecting plate 504 and the guide block 505 to move accordingly until the bottom of the guide block 505 is in contact with the surface of the workpiece to be tested. At this time, the spring detection pin 506 is pushed. If the spring detection pin 506 can be inserted into the slot on the surface of the workpiece to be tested, the workpiece is qualified; otherwise, it is unqualified.
[0026] The first clamping mechanism is a clamp 4, and the second clamping mechanism is an elastic clamping component 8. Both the clamp 4 and the elastic clamping component 8 have rubber heads at their clamping ends. During positioning, the rubber heads are made to fit against the surface of the workpiece to be measured, thus avoiding damage to the workpiece surface.
[0027] refer to Figure 6 It also includes a flatness detection block 9, with a handle fixedly connected to the side of the flatness detection block 9 away from the detection surface. The flatness detection block 9 can be used to detect the flatness of the bottom of the slot hole on the inner side of the workpiece that is not easy to detect directly. During the test, the flatness detection block 9 is inserted into the corresponding hole of the workpiece. If the flatness detection block 9 can enter smoothly at the same time, the flatness of the workpiece is qualified; otherwise, it is unqualified.
[0028] Working principle: During testing, clamp 4, elastic clamping assembly 8, and testing mechanism 5 are all opened. The workpiece to be tested is then placed on top of support base 2. During placement, positioning table 7 is inserted into the bottom of the workpiece to be tested for positioning, ensuring that the bottom surface of the workpiece is in contact with the top surface of positioning table 7. Then, clamp 4 and elastic clamping assembly 8 are closed, clamping and fixing the workpiece to be tested through the clamping ends of clamp 4 and elastic clamping assembly 8 (maintaining a certain gap between the edge of the workpiece and the contour plate 6 during clamping). After clamping, testing mechanism 5 is closed to detect the position of the slots on the surface of the workpiece. During testing, movable plate 502 rotates around connecting base 501 to the side away from limit block 503. When movable plate 502 rotates, it drives the contour plate 6 to move away from the limit block 503. The connecting plate 504 and guide block 505 move together until the bottom of the guide block 505 is in contact with the surface of the workpiece to be tested. At this time, the spring detection pin 506 is pushed. If the spring detection pin 506 can be inserted into the slot on the surface of the workpiece to be tested, the workpiece is qualified; otherwise, it is unqualified. Then, the no-go gauge and the alignment gauge are inserted into the gap between the surface of the workpiece to be tested and the contour plate 6 to detect the outline of the workpiece to be tested. During the detection, if the go end of the no-go gauge passes through and the stop end stops, the outline shape of the workpiece to be tested is qualified; otherwise, it is unqualified. Finally, the flatness detection block 9 is inserted into the corresponding hole on the inside of the workpiece to be tested. If the flatness detection block 9 can enter smoothly at the same time, the flatness of the workpiece to be tested is qualified; otherwise, it is unqualified, thus realizing the rapid and accurate detection of the workpiece.
[0029] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.
Claims
1. A tooling for inspecting rear wheel arches of automobiles, characterized in that: The system includes a base (1), a support seat (2) fixedly connected to the top edge of the base (1), a plurality of first mounting seats (3) provided on both sides of the support seat (2), a contour plate (6) fixedly connected between the top of the support seat (2) and the first mounting seats (3), a plurality of first clamping mechanisms provided around the contour plate (6) on the top of the first mounting seats (3), a second clamping mechanism provided on the top of the support seat (2), a plurality of second mounting seats (10) fixedly connected around the contour plate (6) on the top of the base (1), a detection mechanism (5) fixedly connected to the top of the second mounting seats (10), and a pair of positioning platforms (7) provided on the top of the base (1), the positioning platforms (7) being fixedly connected to the base (1).
2. The automotive rear wheel arch inspection fixture according to claim 1, characterized in that: The detection mechanism (5) includes a connecting seat (501), the bottom of which is fixedly connected to the second mounting seat (10). A movable plate (502) is hinged to the top of the connecting seat (501) on the side away from the contour plate (6). A contour connecting plate (504) is detachably connected to the top of the movable plate (502) on the side facing the contour plate (6). A guide seat (505) is fixedly connected to the other end of the contour connecting plate (504). A number of spring detection pins (506) are fixedly connected to the top of the guide seat (505).
3. The automotive rear wheel arch inspection fixture according to claim 2, characterized in that: The bottom of the connecting seat (501) away from the contour plate (6) is fixedly connected to a limiting block (503), and the limiting block (503) has an inclined surface on the side wall facing the movable plate (502).
4. The automotive rear wheel arch inspection fixture according to claim 1, characterized in that: The first clamping mechanism is a clamp (4), and the second clamping mechanism is an elastic clamping component (8). Both the clamp (4) and the elastic clamping component (8) are provided with rubber heads at their clamping ends.
5. The automotive rear wheel arch inspection fixture according to claim 1, characterized in that: The positioning platform (7) is located on the bottom inner side of the contour plate (6).
6. The automotive rear wheel arch inspection fixture according to claim 1, characterized in that: It also includes a flatness detection block (9), on the side of the flatness detection block (9) away from the detection surface, a handle is fixedly connected.