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A kind of anti-loosening nut and its manufacturing method

A technology for preventing loosening of nuts and nut bodies, which is applied to nuts, manufacturing tools, screws, etc., can solve the problems of environmental impact, low material hardness, and inability to prevent loosening methods, and achieves reduction of phase transformation stress, high hardness, and reduced effect of cracks

Inactive Publication Date: 2018-04-20
奥展实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the plastic anti-loosening method is affected by the environment and cannot meet the requirements of high temperature and severe cold. In the prior art, metal materials are often used to replace engineering plastics to overcome the above technical defects, but the metal materials used are mostly copper-containing. Copper alloy, the hardness of the material is low, which cannot meet the needs of the rapidly developing industry and construction industry

Method used

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  • A kind of anti-loosening nut and its manufacturing method
  • A kind of anti-loosening nut and its manufacturing method
  • A kind of anti-loosening nut and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-4 As shown, the locknut includes a plurality of inner nut bodies (101, 102, 103) and an outer nut body (104); the centers of the plurality of inner nut bodies are hollow threaded cavities; The diameter of the threaded cavity of the inner nut body matches the diameter of the bolt (105); when installed on the bolt, the outer nut body and multiple inner nut bodies are installed in a stepped form along the axial direction from the top to the bottom of the bolt tail; it is located in the lower layer The radius of the inner nut body is greater than the radius of the upper inner nut body; the sum of the thicknesses of the plurality of inner nut bodies is less than the axial length of the bolt; when installed on the bolt, the plurality of inner nut bodies are completely covered by the outer layer The nut body is covered; the cavity of the outer nut body is hollow and inverted in the shape of a ladder along the axial section; the height of each step from bottom...

Embodiment 2

[0049] Such as Figure 1-4 As shown, the locknut includes a plurality of inner nut bodies (101, 102, 103) and an outer nut body (104); the centers of the plurality of inner nut bodies are hollow threaded cavities, and the outer circumference is a cylinder The diameter of the threaded cavity of the plurality of inner nut bodies matches the diameter of the bolt (105); when installed on the bolt, the outer nut body and the plurality of inner nut bodies are axially formed Ladder-like installation; the radius of the inner nut body on the lower layer is larger than the inner nut body radius on the upper layer; the sum of the thicknesses of the multiple inner nut bodies is less than the axial length of the bolt; when installed on the bolt, multiple inner layers The nut body is completely covered by the outer nut body; the cavity of the outer nut body is hollow and inverted along the axial section; the height of each step from bottom to top in the axial direction corresponds to the th...

Embodiment 3

[0064] Such as Figure 1-4 As shown, the locknut includes a plurality of inner nut bodies (101, 102, 103) and an outer nut body (104); the centers of the plurality of inner nut bodies are hollow threaded cavities; The diameter of the threaded cavity of the inner nut body matches the diameter of the bolt (105); when installed on the bolt, multiple inner nut bodies are installed in a ladder shape from bottom to top along the axial direction, and the inner nut body on the lower layer has a larger radius than that on the upper layer. The radius of the inner layer nut body; the sum of the thicknesses of the plurality of inner layer nut bodies is less than the axial length of the bolt; when installed on the bolt, the plurality of inner layer nut bodies are completely covered by the outer layer nut body; the outer layer The cavity of the nut body is in the shape of a hollow inverted ladder along the axial section; the height of each step from bottom to top in the axial direction corr...

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Abstract

The invention belongs to the field of manufacturing mechanical parts, in particular to a lock nut and a manufacturing method thereof. The manufacturing method of the locknut includes the manufacturing step of alloy material and the casting molding step of the nut. The present invention adopts alloy steel material to replace the copper alloy material in the prior art, and the anti-loosening nut manufactured has high hardness and high wear resistance, which meets the high standard requirements of industry and construction industry; the step-by-step quenching process is adopted to effectively reduce the anti-loosening nut material The phase transformation stress during the transformation of the structure from austenite to martensite can effectively reduce the generation of cracks during the transformation. Compared with similar products made of copper alloy in the prior art, the hardness of the anti-loosening nut produced by the invention is increased by 39-45%, the wear resistance is increased by 18-22%, and the crack rate is reduced by 13-20%.

Description

technical field [0001] The invention belongs to the field of manufacturing mechanical parts, in particular to a lock nut and a manufacturing method thereof. Background technique [0002] Screws and nuts are common fasteners in various industries. During use, screws and nuts are prone to loosening, resulting in fastening failure. A lot of improvements have been made in the industry for the anti-loosening functions of screws and nuts. Most of the traditional locknuts are attached to the threads with special engineering plastics, so that the internal and external threads are tightened, and the engineering plastics are squeezed to generate a strong reaction force, thereby increasing the friction between the internal and external threads and providing Absolute resistance to vibration. However, the plastic anti-loosening method is affected by the environment and cannot meet the requirements of high temperature and severe cold. In the prior art, metal materials are often used to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B37/12F16B39/12F16B39/284F16B39/282C22C38/60C22C38/36C21D9/00C21D1/18
Inventor 陈双周礼明
Owner 奥展实业股份有限公司
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