A tool for rapid inspection of shims

By designing an inspection fixture that fits the shape of the pad and equipping it with a detection shaft and a sliding screw structure, the problem of high cost for full inspection of pads was solved, enabling rapid and accurate inspection and adaptability to various applications, thus reducing economic costs.

CN224327662UActive Publication Date: 2026-06-05ZHEJIANG TONGNA PRECISION MATERIAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG TONGNA PRECISION MATERIAL TECH CO LTD
Filing Date
2025-07-28
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

The current method of full inspection after production of pad blocks is costly, and manual inspection is time-consuming and economically expensive, making it difficult to check the symmetry between the arc surface and the central hole.

Method used

The inspection fixture is designed to fit the shape of the pad block and is equipped with a first inspection shaft, a second inspection shaft, and a third inspection shaft. It performs precise inspection by aligning the holes and is adjusted by slides and lead screws to accommodate different types of pad blocks.

Benefits of technology

It enables rapid and accurate detection of pads, reduces costs, improves detection efficiency and versatility, and supports replacement of worn individual parts after long-term use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of cushion block inspection device, and disclose a kind of tool for cushion block rapid inspection, including inspection tool body, the middle part of the inspection tool body is equipped with mounting slot, the inside of the mounting slot is equipped with three groups of holes.The tool for cushion block rapid inspection, by being equipped with the mounting slot and the circular arc surface same as the shape of cushion block in the outside of inspection tool body, ensure that cushion block can be attached in the outside of inspection tool body when cushion block is inspected, while first detection shaft, second detection shaft and third detection shaft are provided in the inside of mounting slot for the different hole position of cushion block, for cushion block detection, whether first detection shaft, second detection shaft and third detection shaft are inserted into the inside of cushion block, i. e. the key assembly size of cushion block can be rapidly inspected to the tool of cushion block, the qualified product key size is guaranteed, while the split assembly structure is adopted to the inspection tool body, single-piece wear can be replaced after long time use, reduce cost.
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Description

Technical Field

[0001] This utility model relates to the technical field of pad inspection devices, specifically a tooling for rapid inspection of pads. Background Technology

[0002] Spacers are used in automotive emission systems to adjust the contact surface between the bolts and the clamps when installing fasteners. The bolts of the fasteners must be tightened to the workpiece through the holes in the spacers, and the hexagonal heads must be inserted into the slots. Therefore, the dimensional requirements for spacers are relatively strict.

[0003] Therefore, after the pad blocks are produced, the products need to undergo full inspection. Staff need to use measuring instruments to check the position and shape of the products, which results in high full inspection costs. In addition, there are requirements for the symmetry of the entire arc surface and the central hole. It is not practical to use measuring tools for full-dimensional inspection. The labor cost is too high, and the time cost is also high, which affects the delivery time. Therefore, we propose a tooling for rapid inspection of pad blocks. Utility Model Content

[0004] To address the shortcomings of existing fixtures for rapid inspection of pad blocks, this invention provides a fixture for rapid inspection of pad blocks. By designing an inspection fixture that conforms to the shape of the pad block, and installing a first detection shaft, a second detection shaft, and a third detection shaft at corresponding positions on the fixture, with the first, second, and third detection shafts aligned with holes in the pad block, and controlling the inspection fixture to conform to the pad block, accurate inspection of the pad block can be achieved, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a tooling for quick inspection of pad blocks, including an inspection tooling body, wherein an installation groove is provided in the middle of the inspection tooling body, and three sets of holes are provided inside the installation groove. The first detection shaft and the third detection shaft are installed inside the holes on the left and right sides, and the second detection shaft is installed inside the hole in the middle.

[0006] Preferably, the inner side of the mounting groove has an arc surface, and the size of the pad is the same as the shape of the mounting groove and the arc surface, wherein the shape of the qualified pad is exactly adapted to fit the inner side of the mounting groove and the arc surface.

[0007] Preferably, the first detection axis, the third detection axis, and the second detection axis are kept perpendicular to the top surface of the inspection fixture body.

[0008] Preferably, the upper part of the inspection fixture body has cutting planes on both sides, and mounting plates are formed by cutting the upper part of both sides of the inspection fixture body.

[0009] Preferably, the mounting groove has two sliding grooves inside, which are symmetrically arranged about the central axis of the second detection shaft. A slider is slidably connected inside the sliding groove, and lead screws are installed inside both sides of the mounting groove. The lead screws and sliders are threadedly connected to each other.

[0010] Preferably, the upper part of the slider is coplanar with the bottom of the mounting groove, and the holes on the left and right sides are respectively opened on the top of the two sets of sliders.

[0011] Compared with existing tooling for rapid inspection of pad blocks, this utility model has the following advantages:

[0012] 1. This fixture for rapid inspection of pads features an external mounting groove and arc surface identical in shape to the pad, ensuring that the pad fits snugly against the outside of the fixture during inspection. Inside the mounting groove, a first, second, and third detection shaft are positioned according to the location of the pad's hole. During pad inspection, the first, second, and third detection shafts are observed to ensure they are inserted into the pad's hole. This fixture allows for rapid inspection of the pad's critical assembly dimensions, guaranteeing the product's critical dimensions are within acceptable limits. Furthermore, the fixture's modular assembly structure allows for easy replacement of worn parts after prolonged use, reducing costs.

[0013] 2. This fixture for quick inspection of pad blocks has a sliding groove inside the mounting slot. By rotating the lead screw, the position of the slider inside the sliding groove can be adjusted. Depending on the position of the mounting hole on the pad block, the positions of the first and third detection axes can be adjusted slightly to ensure that the equipment can inspect different types of pad blocks and improve the diversity of inspection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a side view of the structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the auxiliary adjustment state structure of another embodiment of the present invention.

[0018] In the diagram: 1. Inspection fixture body; 2. Mounting groove; 3. Mounting plate; 4. Arc surface; 5. First inspection axis; 6. Second inspection axis; 7. Third inspection axis; 8. Cutting plane; 9. Slide groove; 10. Slider; 11. Lead screw. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 , Figure 2 and Figure 3 A fixture for rapid inspection of pads includes a fixture body 1. A mounting groove 2 is formed in the middle of the fixture body 1. The mounting groove 2 and the arc surface 4 are identical in shape. After the pad is fitted onto the outside of the fixture body 1, the pad can be in a fitted state with the outside of the fixture body 1. Three sets of holes are formed inside the mounting groove 2. A first detection shaft 5 and a third detection shaft 7 are installed inside the holes on the left and right sides, and a second detection shaft 6 is installed inside the hole in the middle. The first detection shaft 5, the third detection shaft 7, and the second detection shaft 6 are installed inside the holes. After the pad is installed, the threaded hole inside the pad coincides with the first detection shaft 5, the second detection shaft 6, and the third detection shaft 7, thus detecting whether it is a qualified product.

[0021] Please see Figure 1 Strict requirements are placed on the verticality of the holes inside the mounting groove 2 to ensure that the first detection shaft 5, the third detection shaft 7, and the second detection shaft 6 remain perpendicular to the top surface of the inspection fixture body 1 after being inserted into the holes. By ensuring that the verticality of the holes inside the mounting groove 2 does not deviate, the first detection shaft 5, the third detection shaft 7, and the second detection shaft 6 are inserted into the holes inside the pad when the pad is installed on the upper part of the inspection fixture body 1.

[0022] Please see Figure 3 An arc surface 4 is provided on the inner side of the mounting groove 2. The size of the pad is the same as the mounting groove 2 and the shape of the arc surface 4. The pad can be stably attached to the inner side of the mounting groove 2 and the arc surface 4. By providing an arc surface 4 on the inner side of the inspection fixture body 1, and the mounting groove 2 and the arc surface 4 being the same shape as the pad, the pad can be moved to the inner side of the mounting groove 2 and the arc surface 4 during pad inspection. The pad is attached to the inner side of the mounting groove 2 and the arc surface 4, ensuring that the pad is tightly attached. At the same time, the staff can observe whether the pad is attached to the outside of the inspection fixture body 1, thereby inspecting the accuracy and pass rate of the pad.

[0023] Please see Figure 1The upper sides of the inspection fixture body 1 are provided with cutting planes 8, and the upper parts of the two sides of the inspection fixture body 1 are cut to form mounting plates 3. By providing cutting planes 8 on both sides of the upper part of the inspection fixture body 1 and mounting plates 3 on both sides of the inspection fixture body 1, the pad can be attached to the outside of the cutting planes 8 during the control pad detection process.

[0024] As another embodiment, please refer to Figure 4 The mounting groove 2 has two sliding grooves 9 inside, which are symmetrically arranged around the central axis of the second detection shaft 6. Sliding blocks 10 are slidably connected inside the sliding grooves 9. Holes are respectively opened on the top of the two sets of sliding blocks 10 on the left and right sides. The first detection shaft 5, the third detection shaft 7, and the second detection shaft 6 are respectively installed in the holes on the left and right sides and the central hole. Lead screws 11 are installed inside both sides of the mounting groove 2, and the lead screws 11 are threadedly connected to the sliding blocks 10. By opening the sliding grooves 9 inside the mounting groove 2 and installing the sliding blocks 10 inside the sliding grooves 9, rotating the lead screws 11 causes threaded movement between the lead screws 11 and the sliding blocks 10, thus controlling the lateral adjustment of the positions of the first detection shaft 5 and the third detection shaft 7. When the position of the threaded hole on the outside of the pad changes, the position of the sliding block 10 inside the sliding groove 9 is adjusted. That is, the position of the first detection shaft 5 and the third detection shaft 7 is adjusted according to the different positions of the mounting holes on both sides of the pad. The first detection shaft 5 and the third detection shaft 7 can be inserted into different pads, improving the versatility of the equipment during detection.

[0025] Please see Figure 4 The upper part of the slider 10 is kept coplanar with the bottom of the mounting groove 2. The top of the two sets of sliders 10 are provided with holes. The first detection shaft 5 and the third detection shaft 7 are installed inside the holes in the upper part of the slider 10. By keeping the upper part of the slider 10 coplanar with the bottom of the mounting groove 2 and providing holes in the top of the sliders 10, the first detection shaft 5 and the third detection shaft 7 are installed inside the holes. This ensures that the first detection shaft 5 and the third detection shaft 7 are inserted into the pad and installed inside the pad, while improving the stability of the first detection shaft 5 and the third detection shaft 7 when they are installed.

[0026] Working principle: In use, a square inspection fixture body 1 is selected. An installation groove 2 is opened in the middle of the inspection fixture body 1. The installation groove 2 is the same shape as the pad, and an arc-shaped surface 4 is designed on the inner side of the installation groove 2. The arc surface 4 can be precisely fitted with the pad. At the same time, a first detection shaft 5, a second detection shaft 6, and a third detection shaft 7 are provided in the installation groove 2. The position of the hole opened on the pad is aligned with the first detection shaft 5, the second detection shaft 6, and the third detection shaft 7 respectively. During equipment inspection, the pad is controlled to be installed on the outside of the installation groove 2. Observe whether the hole on the pad is aligned with the first detection shaft 5, the second detection shaft 6, and the third detection shaft 7, and whether the pad is fitted with the inner side of the installation groove 2 and the arc surface 4. This allows for rapid detection of the accuracy of the pad during production, improving the convenience and efficiency of pad pass rate inspection.

[0027] 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 rapid inspection of pad blocks, comprising a fixture body (1), wherein a mounting groove (2) is provided in the middle of the fixture body (1), characterized in that: The mounting slot (2) has three sets of holes inside. The first detection shaft (5) and the third detection shaft (7) are installed inside the holes on the left and right sides, and the second detection shaft (6) is installed inside the hole in the middle.

2. The tooling for rapid inspection of pad blocks according to claim 1, characterized in that: The inner side of the mounting groove (2) is provided with an arc surface (4). The size of the pad is the same as the shape of the mounting groove (2) and the arc surface (4). The shape of the qualified pad is just suitable for fitting the inner side of the mounting groove (2) and the arc surface (4).

3. The tooling for rapid inspection of pad blocks according to claim 1, characterized in that: The first detection axis (5), the third detection axis (7), and the second detection axis (6) remain perpendicular to the top surface of the inspection fixture body (1).

4. The tooling for rapid inspection of pad blocks according to claim 1, characterized in that: The upper part of the inspection fixture body (1) has cutting planes (8) on both sides, and mounting plates (3) are formed on the upper part of both sides of the inspection fixture body (1).

5. The tooling for rapid inspection of pad blocks according to claim 1, characterized in that: The mounting groove (2) has two sliding grooves (9) inside. The two sliding grooves (9) are symmetrically arranged with respect to the central axis of the second detection shaft (6). A slider (10) is slidably connected inside the sliding groove (9). A lead screw (11) is installed inside both sides of the mounting groove (2). The lead screw (11) and the slider (10) are threadedly connected to each other.

6. The tooling for rapid inspection of pad blocks according to claim 5, characterized in that: The upper part of the slider (10) is coplanar with the bottom of the mounting groove (2), and the holes on the left and right sides are respectively opened on the top of the two sets of sliders (10).