Cold heading forming process for manufacturing dowel slotted screws and cold heading module

Abstract

The invention relates to a cold heading forming process for manufacturing dowel slotted screws and a cold heading module. The cold heading forming process for manufacturing dowel slotted screws comprises the steps of conducting first-time beam intensification, second-time beam intensification, beam cutting of tail grooves, flange upsetting and cold-heading edge cutting through a cold heading module after wire rods are sheared off; and finally conducting thread rolling and electroplating to obtain the dowel slotted screws. The cold heading module is a four-die four-stroke cold heading machine platform and comprises a first die used for first-time beam intensification, a second die used for second-time beam intensification, a third die used for flange upsetting and beam cutting of the tail grooves and a fourth die used for conducting edge cutting on flanges of the dowel slotted screws. According to the cold heading forming process for manufacturing the dowel slotted screws, through the size of the screws, hexagonal flanges and the slotted grooves, the strength of parts is enhanced, the machining procedures are reduced, and the machining efficiency is improved. The cold heading moduleis simple in structure, easy to operate and high in production efficiency.

Description

technical field [0001] The invention relates to the manufacture of double-head cut-tail groove screws, in particular to a cold heading forming process and a cold heading module for manufacturing double-head cut-tail groove screws. Background technique [0002] like Figure 5 The shown double-ended cut-tail slotted screw is used for automobile exterior decoration. It consists of a first threaded part A at the left end, a second threaded part B in the middle, and a third threaded part C at the right end. The first threaded part A and A hexagonal flange D is arranged between the second threaded portions B, and a tail cutting groove E is arranged on the first threaded portion A. For such products, the existing method is to use a tail cutting machine to form the cutting tail groove E, and then weld and assemble the hexagonal nut (hexagonal flange) by welding; this method has many processing procedures, and the strength of the processed parts is low. Waste materials, long product...

AI Technical Summary

Problems solved by technology

For this type of product, the existing method is to form the tail groove E by a tail cutting machine, and then weld and assemble the hexagonal nut (hexagonal flange) by welding; in this way, there are many processing steps, and the strength of the processed parts is low. Waste of materials, long production cycle, low processing efficiency

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