Cold heading forming device of thin-wall hollow positioning pin and forming method of cold heading forming device

Abstract

The invention discloses a cold heading forming device of a thin-wall hollow positioning pin and a forming method of the cold heating forming device. The cold heating forming device comprises a cold heading machine and a powder removing box and further comprises a steel tube, a dust removing sleeve, a dust collecting tube and a metal rod, wherein the powder removing box is assembled at the feeding end of the cold heading machine through bolts, and the top in the powder removing box is divided into a brushing chamber through steel plate welding; the metal rod is located at the bottom in the brushing chamber, the dust collecting tube is arranged at the top in the brushing chamber, dust removing sleeves are sequentially arranged in the brushing chamber, and one end of each dust removing sleeve is provided with a connecting plug. The surface of a forging blank of the thin-wall hollow positioning pin can be pretreated, the forming effect of the forging material during cold heading machining is better, metal dust and adhered foreign matter generated by wire drawing on the surface of a forging stock wire rod can be effectively cleaned and brushed, and therefore, when the forging blank is subjected to cold heading, the forging blank is guaranteed to not cause large pollution to lubricating oil, the number of reutilization times of the lubricating oil is greatly increased, a good saving effect is achieved, and the processing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of cold heading, and in particular relates to a cold heading forming device and a forming method of a thin-walled hollow positioning pin. Background technique [0002] Cold heading is a forging method in which a metal bar is upset (usually local upsetting) by a mold at room temperature. It is usually used to manufacture the heads of screws, bolts, rivets, etc., which can reduce or replace cutting processing. [0003] In the cold heading forming process of positioning pins, personnel need to frequently replace the lubricating oil for cold heading processing, and frequently replace and maintain the cold heading molds, because the forging blank rods used for cold heading have thick rods that gradually become thinner by wire drawing Forming, the surface of the billet is covered with a large amount of metal powder due to friction, causing the powder to cause greater pollution and wear to the lubricating oil and ...

AI Technical Summary

Problems solved by technology

[0003]In the cold heading forming process of positioning pins, personnel need to frequently replace the lubricating oil for cold heading processing, and frequently replace and maintain the cold heading molds, because The forged billet rod for cold heading is made of thick rods that are gradually drawn and thinned, so that the surface of the billet is covered with a large amount of metal powder due to friction, causing the powder to cause greater pollution and wear to the lubricating oil and the mold, which greatly increases the processing cost.

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