FIELD: process engineering.
SUBSTANCE: invention relates to cold massive forming and can be used for production of rod parts of ball pin-type with hollow head. At first job, solid cylindrical blank is subjected to crosswise-straight extrusion to get rod-like semi-product smoothly changing into hollow part. Hollow part OD equals maximum diameter of finished ball pin head. At the next job, semi-product is reduced to form conical-cylindrical rod part of said ball pin. Sizes of said part comply with those of finished ball pin. Then, semi-product hollow part is reduced to get hollow spherical head of ball pin.
EFFECT: higher quality of finished products, longer life of tools.
4 dwg
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