Cold-heading Machine

The cold heading machine is a machine used in mechanical manufacturing for stamping.

Cold-heading Machine

The cold heading machine is a machine used in mechanical manufacturing for shaping raw material into a desired shape, usually a “step,” without changing its properties, such as softening or hardening it.

The machine has a pair of bevel gears mounted on one end of the crankshaft and a cam gear on the driven bevel gear shaft. A scissors slider is vertically mounted on the roller shaft of the cam device’s driven roller.

This design overcomes the drawbacks of previous methods, resulting in a small friction coefficient and low impact force between the components of the feeding and cutting mechanism. This leads to smooth operation of the equipment, reduced operating noise, and improved product quality and productivity.


The steel used to manufacture fasteners and joints, such as bolts, nuts, screws, and rivets, by the cold heading process is known as cold heading steel, commonly referred to as rivet steel.

Common types of steel used include quenched and tempered alloy steels, low-temperature tempered alloy structural steels, low-carbon low-alloy high-strength steels, and ferritic-martensitic duplex steels.

The cold heading process involves shaping the metal at normal temperature through plastic deformation. This method of manufacturing fasteners is not only efficient and of good quality, but also saves materials and costs.

However, the cold heading process requires high-quality raw materials. The machine uses cold drawn copper, aluminum wire, iron wire, and other materials for automatic cold heading. It is specifically designed to produce core aluminum rivets and semi-hollow iron rivets.

The machine’s structure is fully automated, including straightening, material selection, secondary forming, and blanking. This results in stable forming standards and the ability to process a variety of products.

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