Test fixture

Abstract

The utility model relates to a test fixture, which comprises a bushing and a fixture body, a through hole is formed in the clamp body, the lining is arranged in the through hole, a protruding end is arranged on one side of the clamp body, and a gap groove penetrating through the through hole in the clamp body is formed in the protruding end. The structure is simple in structure, is basically consistent with the traditional production process, is economical and practical, is not high in processing cost, and is controllable in assembly precision. Products without press-fitting surfaces and products with small press-fitting surfaces can be ensured to be easily tested; the test precision is ensured by adjusting the gap groove of the test fixture and the inner contour size of the fixture; and a three-jaw chuck is used for locking on a slotted surface, so that the test strength is ensured.

Description

Technical Field

[0001] This utility model relates to the field of novel test fixture structures for automotive parts, and in particular to a test fixture. Background Technology

[0002] During automotive development, as vehicle performance requirements constantly change, the structure of bushings also evolves. For bushings without a pressing surface or with a small pressing force surface, traditional Haval-style test fixtures, due to their limited strength, lead to increased test stiffness errors. Figure 1 As shown; if an integrated test fixture is used, the bushing is difficult to press in, or the rubber end face impact block experiences excessive pressure during pressing, leading to easy damage to the end face rubber, affecting fatigue and stiffness testing, such as... Figure 2 As shown.

[0003] Considering the testing accuracy of the bushing and the ease of pressing in and out, it is urgent to design a new type of test fixture structure that can facilitate the pressing in and out of the bushing, and is easy to operate and simple to use, thereby improving the assembly accuracy. Utility Model Content

[0004] To address the problem that existing fixtures are inconvenient for pressing in and out bushings, a test fixture is proposed.

[0005] The technical solution of this utility model is as follows: a test fixture, including a bushing and a fixture body; the fixture body has a through hole inside, the bushing is disposed in the through hole, and a protruding end is provided on one side of the fixture body, the protruding end has a gap groove that extends through the internal through hole.

[0006] Preferably, the two sides of the protruding end are arc-shaped.

[0007] Preferably, the gap groove is perpendicular to the circular cross-section of the bushing.

[0008] The beneficial effects of this utility model are as follows: This utility model is a simple structure that is basically the same as the traditional production process, and is economical, practical, low in processing cost, and has controllable assembly precision. It can ensure that products with no pressure surface or small pressure surface are easy to test; by adjusting the gap groove and inner contour size of the test fixture, the test accuracy is guaranteed; and by using a three-jaw chuck to lock the slotted surface, the test strength is guaranteed. Attached Figure Description

[0009] Figure 1 A three-dimensional view of a Haver-type test fixture;

[0010] Figure 2 A three-dimensional view of a test fixture with an integrated structure;

[0011] Figure 3This is a perspective view of the test fixture of this utility model;

[0012] Figure 4 This is a cross-sectional view of the test fixture of this utility model.

[0013] The component names corresponding to the various reference numerals in the diagram are as follows:

[0014] 1. Bushing; 2. Fixture body; 21. Protruding end; 22. Clearance groove. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0016] Traditional Haver-type test fixtures suffer from increased test stiffness errors due to insufficient fixture strength. Figure 1 As shown; if an integrated test fixture is used, the bushing is difficult to press in, or the rubber end face impact block experiences excessive pressure during pressing, leading to easy damage to the end face rubber, affecting fatigue and stiffness testing, such as... Figure 2 As shown.

[0017] refer to Figure 3 , 4 As shown in the figure, this application discloses a test fixture, including a bushing 1 and a fixture body 2; the fixture body 2 has a through hole inside, the bushing 1 is disposed in the through hole, and a protruding end 21 is provided on one side of the fixture body 2, the protruding end 21 has a gap groove 22 that extends through the internal through hole.

[0018] The gap groove 22 is perpendicular to the circular cross-section of the bushing 1. The two sides of the protruding end 21 are arc-shaped.

[0019] Specific working methods:

[0020] This utility model test fixture solves the problem of products with no pressing surface or a small pressing surface of bushing 1 being difficult to press in by means of gap groove 22, and avoids the problem of rubber damage after bushing 1 is pressed in; by adjusting the gap groove 22 and the inner contour size, the dimensional accuracy is ensured after the gap groove 22 is closed, and the protruding end 21 on one side of the fixture body 2 is fixed by a three-jaw chuck to ensure the test strength.

[0021] The beneficial effects are:

[0022] This utility model presents a simple structure that is largely consistent with traditional production processes, and is economical, practical, and cost-effective, with controllable assembly precision. It ensures that products with no or small pressure-fitting surfaces are easy to test; testing accuracy is guaranteed by adjusting the gap groove and inner contour dimensions of the test fixture; and testing strength is ensured by using a three-jaw chuck to lock the slotted surface.

[0023] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A test fixture, characterized in that, It includes a bushing (1) and a fixture body (2); the fixture body (2) has a through hole inside, the bushing (1) is placed inside the through hole, and a protruding end (21) is provided on one side of the fixture body (2), and the protruding end (21) has a gap groove (22) that extends through the internal through hole.

2. The test fixture according to claim 1, characterized in that, The two sides of the protruding end (21) are arc-shaped.

3. The test fixture according to claim 1, characterized in that, The gap groove (22) is perpendicular to the circular cross-section of the bushing (1).

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