METHOD FOR WORKING PARTIALLY SPHERICAL HEAD OF BALL PIN Russian patent published in 2002 - IPC

FIELD: plastic metal working. SUBSTANCE: method comprises steps of rolling around partially spherical head of ball pin by planetary rotation deforming rolling bodies; increasing angular velocity of said bodies from 1200-1700 up to 2000-2500 rev/min; rotating ball pin around its lengthwise axis and simultaneously rotating it in plane passing through lengthwise axis of pin normally relative to rotation plane of deforming rolling bodies; increasing angular velocity of deforming rotating rolling bodies at constant value of angular acceleration or discretely. EFFECT: enhanced quality of worked heads, reduced time period for working them. 2 dwg