Tool for self-locking nut simulation installation test

Abstract

The utility model relates to the technical field of simulated installation tests, and provides a tool for a simulated installation test of a self-locking nut, which is used in cooperation with the self-locking nut and comprises a tool seat, a threaded hole extending inwards is formed in the end face of the tool seat, and a limiting hole extending inwards is formed in the bottom of the threaded hole; the cross-shaped screwdriver head is arranged in the limiting hole, and the cross-shaped screwdriver head is matched with the limiting hole; a through counterbore is formed in the inner end face of the tool blanking cap, the counterbore is matched with the cross recessed countersunk bolt, the tool blanking cap comprises a threaded section, and the threaded section is in threaded fit with the threaded hole; and the cross-recessed countersunk bolt is arranged in the countersunk hole and is matched with the countersunk hole, and a cross recess of the cross-recessed countersunk bolt is meshed with the cross screwdriver head.

Description

Technical Field

[0001] The utility model relates to the technical field of simulated installation tests, in particular to a tool for simulated installation tests of self-locking nuts. Background Art

[0002] In the fields of aviation and aerospace, there are high requirements for the anti-loosening properties of fasteners, and self-locking nuts are used extensively. Locking performance is one of the important performance indicators of self-locking nuts. Therefore, when manufacturing self-locking nuts, simulated installation tests are required to test the locking performance and durability.

[0003] as follows Figure 1 As shown in the figure, when a self-locking nut is used in a simulated installation test with a cross recessed countersunk bolt, the torque tester's two three-jaw chucks are used to clamp the cross bit and the self-locking nut, respectively. The cross recess of the cross recessed countersunk bolt is then engaged with the cross bit, and the torque tester is used to tighten the self-locking nut. However, during the repeated screwing-in and screwing-out cycles, the self-locking nut may slip, and the cross bit may easily come out of the cross recess of the cross recessed countersunk bolt. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a tool for simulating the installation test of self-locking nuts, which can prevent the cross bit from falling out of the cross groove of the cross recessed countersunk bolt.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a tool for simulating the installation test of self-locking nuts, used in conjunction with the self-locking nuts, comprising:

[0006] A tooling seat, wherein an inwardly extending threaded hole is formed on the end surface of the tooling seat, and a limiting hole extending inward is formed on the bottom of the threaded hole;

[0007] A cross bit, the cross bit being arranged in the limiting hole and adapted to the limiting hole;

[0008] A tool plug cover, wherein a through countersunk hole is formed on the inner end surface of the tool plug cover, the countersunk hole is adapted to the cross recessed countersunk bolt, and the tool plug cover includes a threaded section, the threaded section is threadedly engaged with the threaded hole;

[0009] A cross recessed countersunk bolt is arranged in the countersunk hole and adapted to the countersunk hole, and the cross recess of the cross recessed countersunk bolt is engaged with the cross bit.

[0010] Furthermore, the tooling seat has an outer shape of a regular hexagonal structure.

[0011] Furthermore, the tooling cover also includes a flange section, and the outer shape of the flange section is a regular hexagonal structure.

[0012] Furthermore, the hardness of the tooling seat and the tooling cover is greater than HRC50.

[0013] Furthermore, the cross section of the limiting hole is a regular hexagon.

[0014] The beneficial effects of the present invention are as follows: The present invention provides a fixture for simulating the installation of self-locking nuts. First, a cross-head screwdriver bit is inserted into a limiting hole, so that the cross-head screwdriver bit engages with the cross groove of a cross-slotted countersunk bolt. Because the threaded section of the fixture cover and the threaded hole of the fixture base are threadedly matched, rotating the fixture cover tightens the two, thereby preventing the cross-head screwdriver bit from falling out of the cross groove of the cross-slotted countersunk bolt during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the existing simulation installation test;

[0016] Figure 2 It is a structural diagram of the present utility model.

[0017] Figure markings: 10-tooling seat, 11-threaded hole, 12-limiting hole, 20-cross bit, 30-tooling plug cover, 31-threaded section, 32-flange section, 40-cross slot countersunk bolt, 50-self-locking nut. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] In this application, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] In addition, the terms "first", "second" and the like are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance or an implied indication of the number of the technical features indicated. In the description of the utility model, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0022] As shown in Figure 2 The utility model provides a self locking nut simulation installation test frock with self locking nut 50 cooperation uses. This frock includes frock seat 10, cross head 20, frock plug 30 and cross groove countersunk head bolt 40.

[0023] The end face of frock seat 10 is provided with a transversely inwardly extending threaded hole 11, and the bottom of threaded hole 11 is provided with a transversely inwardly extending limiting hole 12.

[0024] The cross head 20 is arranged in the limiting hole 12 and is adapted to the limiting hole 12.

[0025] The inner end face of frock plug 30 is provided with a transversely penetrating countersunk head hole, and the countersunk head hole is adapted to the cross groove countersunk head bolt 40. The frock plug 30 includes a threaded segment 31, and the threaded segment 31 is threadedly matched with the threaded hole 11.

[0026] The cross groove countersunk head bolt 40 is arranged in the countersunk head hole and is adapted to the countersunk head hole, and the cross groove of the cross groove countersunk head bolt 40 is engaged with the cross head 20.

[0027] The self locking nut 50 is threadedly matched with the cross groove countersunk head bolt 40 and is located on the outside of the frock plug 30.

[0028] In use, the cross head 20 is first arranged in the limiting hole 12, so that the cross groove of the cross groove countersunk head bolt 40 is engaged with the cross head 20. Then the frock plug 30 is screwed into the threaded hole 11 on the frock seat 10, so that the cross groove countersunk head bolt 40 is compressed. Finally, the self locking nut 50 is threadedly matched with the cross groove countersunk head bolt 40.

[0029] The frock seat 10 is clamped by the three-jaw chuck at one end of the torque testing machine, and the self locking nut 50 is clamped by the three-jaw chuck at the other end, and then the test can be started. Because the cross groove of the cross groove countersunk head bolt 40 is engaged with the cross head 20, the frock seat 10 and the frock plug 30 are compressed, so that the cross head 20 will not come out of the cross groove of the cross groove countersunk head bolt 40 during the test. At the same time, the torque of the torque test is still transmitted to the cross groove countersunk head bolt 40 through the cross head 20, and the simulation installation test has high restoration degree.

[0030] In one embodiment, the frock seat 10 has a regular hexagonal structure, which is convenient for assembly and clamping.

[0031] In one embodiment, the tooling cover 30 further includes a flange section 32 . The flange section 32 has a regular hexagonal structure for easy assembly and clamping.

[0032] In one embodiment, the hardness of the tooling base 10 and the tooling plug cover 30 is greater than HRC 50. After heat treatment, the tooling base 10 and the tooling plug cover 30 are ensured to have a hardness greater than HRC 50 and can withstand large torque during testing.

[0033] In one embodiment, the cross section of the limiting hole 12 is a regular hexagon.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that come within the meaning and range of equivalents of the claims be included in the present invention.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tool for simulating the installation test of self-locking nuts, used in conjunction with self-locking nuts, characterized by: include: A tooling seat, wherein an inwardly extending threaded hole is formed on the end surface of the tooling seat, and a limiting hole extending inward is formed on the bottom of the threaded hole; A cross bit, the cross bit being arranged in the limiting hole and adapted to the limiting hole; A tool plug cover, wherein a through countersunk hole is formed on the inner end surface of the tool plug cover, and the tool plug cover includes a threaded section, and the threaded section is threadedly engaged with the threaded hole; A cross recessed countersunk bolt is arranged in the countersunk hole and adapted to the countersunk hole, and the cross recess of the cross recessed countersunk bolt is engaged with the cross bit.

2. A tool for simulated installation testing of self-locking nuts according to claim 1, characterized in that: The tooling seat has an outer shape of a regular hexagonal structure.

3. The tool for simulated installation test of self-locking nuts according to claim 2, characterized in that: The tooling cover also includes a flange section, and the outer shape of the flange section is a regular hexagonal structure.

4. The tool for simulated installation testing of self-locking nuts according to claim 1, characterized in that: The hardness of the tooling seat and the tooling cover is greater than HRC50.

5. The tool for simulated installation test of self-locking nuts according to claim 1, characterized in that: The cross section of the limiting hole is a regular hexagon.

Images