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

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.

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 ...

AI Technical Summary

Problems solved by technology

[0004] (1) In terms of cold heading, the cold heading deformation ratio of parts is relatively large, and cold heading is very difficult;

[0005] (2) In terms of turning (that is, lathe processing), the thickness of the pallet is very thin, with a thickness of only 0.9 to 1.1, which is difficult to guarantee the thickness requirement;

Images