Working principle of cold heading machine

Forging method of thickening the top of bar or wire at room temperature. Cold heading is mainly used to manufacture bolts, nuts, nails, rivets and steel balls. The forging blank material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, and the material utilization rate can reach 80-90%. Cold heading is mostly carried out on special cold heading machine, which is convenient for continuous, multi-station and automatic production. Cutting, upsetting, stacking, forming, chamfering, wire rolling, reducing diameter and trimming can be completed in turn on the cold upsetting machine. The production efficiency is high, which can reach more than 300 pieces/minute, and the maximum diameter of cold heading workpiece is 48 mm Figure 1 Schematic diagram of cold heading bolt process is a typical process of cold heading bolt. Fig. 2 Multi-station nut automatic cold heading machine is a multi-station nut automatic cold heading machine. The bar is automatically fed to a certain length by the feeding mechanism, cut into blanks by the cutting mechanism, and then sent to the stacking and punching stations in turn by the fixture conveying mechanism for molding.

Domestic cold heading machine manufacturers are mainly distributed in Zhejiang (Wenzhou), Jiangsu (Yixing), Guangzhou and Taiwan Province Province.

It is better for Zhejiang to have a car that imitates Taiwan Province Province. Guangzhou is dominated by small cold heading machines (below M4), Yixing's cold heading machines are relatively cost-effective, and the models of cold heading machines are relatively complete from small to large (M3-M30). The manufacturers of cold heading machines with relatively good quality include Qunfeng Machinery and Xiangsheng Machinery.