Processing technology of welded nut

Abstract

Processing technology of a welded nut mainly solves problems that deviation of perpendicularity of a threaded hole is high, sizes of various weld points deviate and heights of the weld points are inconsistent when an existing welded nut is processed. The processing technology is characterized by comprising steps of a, reshaping a nut body (2): forming a blank (1) by a cold header by means of cold heading; b, punching: punching a through hole in the center of the nut body (2) by the cold header; c, reshaping the nut body (2) again: using the center hole of the nut body (2) as a positioning reference to reshape the nut body (2) again; d, drawing a corner: using the center hole of the nut body (2) as the positioning reference to head out weld points (3) on the edge of an end surface of the nut body (2) by the cold header; and e, thread tapping: forming the welded nut (4). The center hole is used for positioning in the corner drawing process, perpendicularities of threaded holes of the welded nut are effectively guaranteed, dimensional deviation of the weld points is low, and heights of the weld points keep consistent.

Description

technical field [0001] The invention relates to a processing technology of a standard part, in particular to a processing technology of a welding nut. Background technique [0002] Weld nuts belong to hardware standard parts, and are often used in various precision parts, chassis, cabinets, automotive components, etc. There are multiple welding points on one end surface of the welding nut, and the height of each welding point is the same. The existing welding nut processing technology is as follows (taking the square nut as an example): 1. The nut body is shaped, and the blank is formed by cold heading machine. Generally, continuous cold heading is required for 2 to 3 times, mainly for the 4 parts of the nut body. 2. Draw the angle, use a cold heading machine to upset a welding point with a consistent height on the edge of the end face of the formed nut body; 3. Punch, use a cold heading machine to punch out at the center of the nut body Through hole; 4. Tapping, use a tapp...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the background technology, the present invention provides a welding nut processing technology, which mainly solves the problems of large verticality deviation of threaded holes, deviations in the size of each welding point and inconsistent height of each welding point when the existing welding nut is processed. The problem is that this process uses the center hole to position when pulling the angle, which effectively ensures the verticality of the threaded hole of the welding nut. At the same time, the size deviation of each welding point is small, and the height of each welding point can be kept consistent.

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