A small wire diameter annular part magnetic powder detection clamp and clamp assembly

Abstract

The utility model discloses a small line diameter annular part magnetic powder detection clamp and clamp assembly. The utility model discloses can realize the detection fixed of small line diameter annular part, has saved production cost, and detection clamp can pass through the clearance of thread adjustment to adapt to the part of different line diameter, can satisfy the magnetic powder detection demand of different specifications of part, further, the utility model magnetic powder detection clamp assembly still can pass through the increase magnetic powder detection clamp, increase the fixed small line diameter annular part, realize batch detection, have solved the problem of small line diameter part mass magnetic powder detection to a certain extent, improve the accuracy of experimental result, have improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing fixtures, and more specifically, to a magnetic particle testing fixture and fixture assembly for small-diameter annular parts. Background Technology

[0002] Small-diameter ring parts are common and important elastic components with wide applications in industrial production. Since these parts need to withstand tensile or compressive stresses during use, it is crucial to ensure that no damage occurs during processing, such as hot bending, cold bending, or heat treatment, to prevent failure.

[0003] To ensure quality, it is necessary to improve the precision of the processing and to screen out parts with surface or near-surface cracks or hairline cracks. These parts have a large overall radial dimension, requiring a current of 12–20 × d (wire diameter) A for magnetization according to the magnetic particle testing principle. However, the parts have thin wire diameters and insufficient weight; under such a strong magnetic field, all the parts would "stick" together, making quality assessment impossible. To prevent the parts from "attracting" each other during magnetization, while ensuring observation conditions and testing efficiency, a secure, unobstructed, small-wire-diameter ring-shaped magnetic particle testing fixture is needed. Utility Model Content

[0004] This invention overcomes the shortcomings of existing technologies in detecting small-diameter ring-shaped parts, which are prone to adhesion, and provides a magnetic particle testing fixture and fixture assembly for small-diameter ring-shaped parts, in order to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a magnetic particle testing fixture for small-diameter annular parts;

[0006] A magnetic particle testing fixture for small-diameter annular parts includes a fixture body, a gasket, and a clamping block;

[0007] The fixture body includes a limiting protrusion and a threaded shaft, wherein the threaded shaft is mounted on the limiting protrusion, the diameter of the limiting protrusion is larger than the diameter of the threaded shaft, and an installation thread is provided on the top of the threaded shaft;

[0008] The clamping block has a cylindrical structure, and the inner side of the clamping block has a threaded hole that is threaded to fit the threaded shaft. The clamping block can be screwed in and out of the threaded shaft.

[0009] The gasket is positioned between the clamping block and the protrusion of the fixture body. The gasket has a hole inside, and the shape of the hole matches the threaded shaft.

[0010] Before magnetic particle testing, small-diameter ring-shaped parts can be clamped and fixed using the fixture body and clamping block. For ring-shaped parts of different sizes, the gap can be adjusted by thread to achieve adaptation and meet the magnetic particle testing requirements of parts of different specifications.

[0011] A further technical solution is that the gasket includes a grooved gasket and a fixing key;

[0012] The grooved gasket has an internal hole with a mounting groove, and the fixing key is installed in the mounting groove;

[0013] The retaining key can fix the grooved gasket to the threaded shaft.

[0014] The circumferential relative position of the threaded shaft and the grooved washer is controlled by a fixed key to prevent the circumferential sliding of the parts during the clamping process of the clamping block rotation.

[0015] In another aspect, this utility model also provides a magnetic particle testing fixture assembly for small-diameter annular parts;

[0016] A magnetic particle testing fixture assembly for small-diameter annular parts includes a fixed end block and a magnetic particle testing fixture as described above;

[0017] The fixed end block is provided with mounting screw holes;

[0018] On the main body of the magnetic particle testing fixture, in the direction opposite to the threaded shaft, there is a mounting stud that mates with the mounting screw hole of the fixed end block. The magnetic particle testing fixture can be detachably installed on the fixed end block.

[0019] A further technical solution is that a vent hole is provided on the mounting screw hole of the fixed end block.

[0020] The purpose of the vent is to prevent the formation of a closed air cavity inside, which would affect the installation.

[0021] A further technical solution is that the number of magnetic particle testing fixtures is at least two;

[0022] The magnetic particle testing fixture includes several intermediate testing fixtures and a tail testing fixture;

[0023] The intermediate testing fixture has a mounting screw hole inside its threaded shaft, which mates with the mounting studs of other magnetic particle testing fixtures.

[0024] The intermediate detection fixtures are nested together, and the tail detection fixture is mounted on the last intermediate detection fixture.

[0025] In practical applications, to improve testing efficiency, the magnetic particle testing fixture can be used as a unit, with multiple units connected in series. Therefore, by nesting the intermediate and tail testing fixtures, testing can be completed in one operation.

[0026] A further technical solution is that the mounting screw holes of the intermediate detection fixture are provided with vent holes.

[0027] The vent is used to prevent the formation of a closed air cavity inside, which would affect installation.

[0028] A further technical solution is that the magnetic particle testing fixture and the fixed end block are made of a lightweight material that is not magnetic.

[0029] Compared with the prior art, this utility model has at least the following beneficial effects: This utility model can realize the detection and fixation of small-diameter ring-shaped parts, saving production costs; the detection fixture can adjust the gap through the thread to adapt to parts of different wire diameters, which can meet the magnetic particle detection needs of parts of different specifications; furthermore, the magnetic particle detection fixture assembly of this utility model can also increase the fixed small-diameter ring-shaped parts by adding magnetic particle detection fixtures, realize batch detection, solve the problem of large-scale magnetic particle detection of small-diameter parts to a certain extent, improve the accuracy of experimental results, and improve work efficiency. Attached Figure Description

[0030] Figure 1 A schematic diagram of the structure of the fixed end block, intermediate detection fixture, and tail detection fixture;

[0031] Figure 2 A schematic diagram of a structure for fixing a small-diameter ring-shaped part.

[0032] In the figure, 1-fixed end block, 2-magnetic particle testing fixture, 21-fixture body, 22-shim, 221-fixing key, 23-clamping block, 31-intermediate testing fixture, 32-tail testing fixture, 4-small wire diameter ring-shaped part. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] Example 1

[0035] A magnetic particle testing fixture for small-diameter annular parts includes a fixture body 21, a gasket 22, and a clamping block 23;

[0036] The fixture body 21 includes a limiting protrusion and a threaded shaft, wherein the threaded shaft is mounted on the limiting protrusion, the diameter of the limiting protrusion is larger than the diameter of the threaded shaft, and an installation thread is provided on the top of the threaded shaft.

[0037] The clamping block 23 has a cylindrical structure, and the inner side of the clamping block 23 has a threaded hole that is threaded to fit the threaded shaft. The clamping block 23 can be screwed in and out of the threaded shaft.

[0038] The gasket 22 is disposed between the protrusion of the clamping block 23 and the fixture body 21. The gasket 22 has a hole inside, and the shape of the hole matches the threaded shaft.

[0039] The gasket 22 is directly pressed and fixed to the small-diameter annular part.

[0040] In a preferred embodiment, the gasket 22 includes a grooved gasket 22 and a fixing key 221;

[0041] The grooved gasket 22 has an internal hole with a mounting groove, and the fixing key 221 is installed in the mounting groove;

[0042] The fixing key 221 can fix the grooved washer 22 onto the threaded shaft.

[0043] It is understood that the fixing key 221 can be installed in the mounting slot in various ways, such as wedge embedding or snap-in.

[0044] Example 2

[0045] A magnetic particle testing fixture assembly for small-diameter ring-shaped parts, see [link / reference]. Figure 1 , Figure 2 It includes a fixed end block 1 and a magnetic particle detection fixture 2 as described above;

[0046] The fixed end block 1 is provided with mounting screw holes, and the mounting screw holes of the fixed end block 1 are provided with vent holes;

[0047] On the clamp body 21 of the magnetic particle testing fixture 2, in the direction opposite to the threaded shaft, there is a mounting stud that mates with the mounting screw hole of the fixed end block 1. The magnetic particle testing fixture 2 can be detachably installed on the fixed end block 1.

[0048] In a further preferred embodiment, the number of magnetic particle detection fixtures 2 is at least two;

[0049] In this embodiment, as Figure 2 As shown, it includes 4 magnetic particle testing fixtures 2.

[0050] The magnetic particle testing fixture 2 includes several intermediate testing fixtures 31 and a tail testing fixture 32;

[0051] The intermediate testing fixture 31 has a mounting screw hole inside its threaded shaft, which mates with the mounting studs of other magnetic particle testing fixtures 2.

[0052] The intermediate detection fixtures 31 are nested together, and the tail detection fixture 32 is mounted on the last intermediate detection fixture 31.

[0053] The last fixture does not need to be connected to other fixtures, so it can be set as a tail detection fixture 32, which has mounting studs but no mounting screw holes.

[0054] It is understandable that even with only one magnetic particle testing fixture 2, the fixing and testing effects can be achieved. With multiple magnetic particle testing fixtures 2, each magnetic particle testing fixture 2 can be assembled by using mounting screw holes and mounting studs.

[0055] In the assembled components, each magnetic particle testing fixture 2 has a fixing position for a small wire diameter ring part 4. The specific size of the small wire diameter ring part 4 can be different, and it is only necessary to adjust the relationship between the clamping block 23 and the fixture body 21.

[0056] A further technical solution is that a vent hole is provided on the mounting screw hole of the intermediate testing fixture 31.

[0057] In this embodiment, the magnetic particle testing fixture 2 and the fixed end block 1 are made of a lightweight material that is not magnetic.

[0058] For example, the non-magnetic lightweight material includes polyurethane rods, phenolic resin laminated cloth rods, etc.

[0059] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A magnetic particle testing fixture for small-diameter ring-shaped parts, characterized in that, Includes the clamp body, gasket, and clamping block; The fixture body includes a limiting protrusion and a threaded shaft, wherein the threaded shaft is mounted on the limiting protrusion, the diameter of the limiting protrusion is larger than the diameter of the threaded shaft, and an installation thread is provided on the top of the threaded shaft; The clamping block has a cylindrical structure, and the inner side of the clamping block has a threaded hole that is threaded to fit the threaded shaft. The clamping block can be screwed in and out of the threaded shaft. The gasket is positioned between the clamping block and the protrusion of the fixture body. The gasket has a hole inside, and the shape of the hole matches the threaded shaft.

2. The magnetic particle testing fixture for small-diameter annular parts as described in claim 1, characterized in that, The gasket includes a grooved gasket and a fixing key; The grooved gasket has an internal hole with a mounting groove, and the fixing key is installed in the mounting groove; The retaining key can fix the grooved gasket to the threaded shaft.

3. A magnetic particle testing fixture assembly for small-diameter ring-shaped parts, characterized in that, Includes a fixed end block and a magnetic particle testing fixture as described in claim 1 or 2; The fixed end block is provided with mounting screw holes; On the main body of the magnetic particle testing fixture, in the opposite direction to the threaded shaft, there is a mounting stud that mates with the mounting screw hole of the fixed end block. The magnetic particle testing fixture can be detachably installed on the fixed end block.

4. The magnetic particle testing fixture assembly for small-diameter annular parts as described in claim 3, characterized in that, Vent holes are provided on the mounting screw holes of the fixed end block.

5. A magnetic particle testing fixture assembly for small-diameter annular parts as described in claim 3 or 4, characterized in that, The number of magnetic particle testing fixtures is at least two; The magnetic particle testing fixture includes several intermediate testing fixtures and a tail testing fixture; The intermediate testing fixture has a mounting screw hole inside its threaded shaft, which mates with the mounting studs of other magnetic particle testing fixtures. The intermediate detection fixtures are nested together, and the tail detection fixture is mounted on the last intermediate detection fixture.

6. The magnetic particle testing fixture assembly for small-diameter annular parts as described in claim 5, characterized in that, The intermediate testing fixture has vent holes on its mounting screw holes.

7. The magnetic particle testing fixture assembly for small-diameter annular parts as described in claim 5, characterized in that, The magnetic particle testing fixture and the fixed end block are made of a lightweight, non-magnetic material.

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