What is the working principle of cold pier machine? The working principle of the cold pier machine is that the power is transmitted through pulleys and gears, the crank connecting rod and slider mechanism move linearly, and the blank of the machined part is plastically deformed or separated by the punch and die.
Cold pier machine is a kind of stamping machine in mechanical manufacturing. Under the condition that the raw materials do not change (mainly softening or hardening), the materials are molded into the required shape (generally molded into "steps").
The main function of cold pier machine is metal plastic forming, that is, upsetting wire into the shape you need, which is generally mainly used in fastener industry, that is, making screws. The cold heading machine can also produce some non-standard products.
Steel used to manufacture fasteners and connectors (such as bolts, nuts, screws, rivets, etc.). The method of cold pier processing is called cold pier machine, commonly known as riveted rebar.
Usually used are quenched and tempered alloy steel, low-temperature tempered alloy structural steel, low-carbon low-alloy high-strength steel, ferrite-martensite dual-phase steel and so on. Cold pier is formed by metal plastic at room temperature.
Using cold pier technology to manufacture fasteners not only has high efficiency and good quality, but also saves materials and costs. However, the cold pier technology requires higher quality of raw materials.
The selection of raw materials for cold pier machine is mainly based on the theory of metal plastic deformation, and the quality of metal materials is also very high, with very strict standards, especially for the chemical composition and mechanical properties of riveted steel.
Cold pier machine has good surface quality and high dimensional accuracy in production, and good cold working hardening in upsetting process, so it can maintain good deformation without too much deformation, thus reducing the phenomenon of workpiece cracking.