METHOD OF PRODUCING BALL PINS Russian patent published in 2013 - IPC B21K1/46 

Abstract RU 2483829 C1

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used for production of cup with flange parts. After cutting the billet, head is pre-upset, rod is pre-reduced and cone is formed at rod part adjoining cylinder part under head. Angle of cone being formed equals that of finished cone. Note here that in pre-reduction, conical section is formed by reduction to have length Lp≤din combine with upsetting of conical part with length L0≤dm where dm is diameter of rod part adjoining ball head. Billet diameter dbl is selected from the relationship dbl=(0.8…0.95)dm. At second position, second pre-upset of head and final reduction of rod are carried out along with cone forming. At third position, ball head if finally upset.

EFFECT: higher strength and quality.

1 dwg

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RU 2 483 829 C1

Authors

Valiev Rafail Shamilevich

Nazmiev Marat Mirgasimovich

Babintsev Andrej Viktorovich

Dates

2013-06-10Published

2012-01-10Filed