Method for machining stainless steel singe dual-lug support plate nut

A technology of pallet nuts and processing methods, which is applied in the field of cold processing of stainless steel pallet fasteners, can solve problems such as difficult to ensure thickness requirements, difficult cold heading forming, large cold heading deformation, etc., to ensure ductility and fluidity , Improve cutting performance and meet assembly requirements
CN103586633AInactive Publication Date: 2014-02-19JIANGXI HONGDU AVIATION IND GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI HONGDU AVIATION IND GRP
Publication Date
2014-02-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for machining a stainless steel singe dual-lug support plate nut. The method includes the steps of the step A, machining a cold heading mould, the step B, trimming, the step C, tapping and the step D, shell nosing, wherein the step A includes the step A1 of primary heading and the step A2 of final heading. The method is advanced, easy to adopt, and capable of ensuring malleability and flowability of materials; the percent of pass of riveting of machined parts can reach 100%, and the parts can meet assembling requirements.
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Description

technical field

[0001] The invention relates to a cold working process for stainless steel bracket fasteners, in particular to a processing method for stainless steel single and double ear bracket nuts. Background technique

[0002] The pallet self-locking nut is a self-locking military fastener product with complex manufacturing process, high technical difficulty and high added value. It is mainly used for the connection of sheet metal parts and stamping parts on aircraft, and is widely used in the aerospace field. In recent years, as the aerospace industry has higher and higher requirements for high-strength, high-self-locking and high-corrosion-resistant backing nuts, the backing nuts manufactured and processed by traditional structural steel materials and processes can no longer meet the requirements.

[0003] The existing stainless steel single and double lug nut is a new type of self-locking standard part (structure such as figure 1 , figure 2 shown), the material ...

Claims

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