Cold heading module and cold heading process of special-shaped terminal

Abstract

The invention discloses a cold heading module and a cold heading process of a special-shaped terminal. The cold heading module comprises a first die used for obtaining a sheet shape and a cylinder shape, a second die used for obtaining the taper of the head of the cylinder shape and the size needed by sheet shape diameter expansion, a third die used for obtaining the size needed by a to-be-shifted part formed by cylinder shape diameter shrinkage and cylinder shape lower part diameter expansion and sheet shape further diameter expansion, a fourth die used for shifting the to-be-shifted part, a fifth die used for flattening treatment, and a sixth die used for final accurate forming; and the cold heading process comprises the steps of material shearing, primary extrusion, secondary extrusion, bundling of the to-be-shifted part, shifting of the to-be-shifted part, flattening of a shifted combined part, and finally accurate size forming to obtain the special-shaped terminal. According to the cold heading module and the cold heading process of the special-shaped terminal, axis shifting of the cylinder shape and the sheet shape is achieved, and the production efficiency and the stability of the product quality are greatly improved; and the cold heading die set is simple in structure and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of part processing, in particular to a cold heading module and a cold heading process for special-shaped terminals. Background technique [0002] Cold heading is a forging method that uses a die to forge a metal material at room temperature. Compared with cutting processing, cold heading has high efficiency, high material utilization rate, cold hardening characteristics of metal materials, which improves the physical strength of cold heading parts, etc., so the economic benefits of cold heading process are significant. The most mature application field is the manufacture of standard parts (various screws and nuts), while the cold heading process of more complex and special-shaped parts is also constantly being developed and realized. [0003] Such as figure 1 The special-shaped terminal 10 shown is specially used for connectors in the field of solar energy, and it is composed of a cylinder 101 at the upper...

AI Technical Summary

Problems solved by technology

For such products, the existing method is to form the sheet body 102 and the cylinder body 101 separately, and then weld and assemble them by welding; this method requires many processing steps, the strength of the processed parts is low, waste of materials, and the production cycle is long , the product quality is unstable

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