범용 선반을 이용한 볼과 소켓의 정밀 체결을 위한 회전성형
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In this paper, a general purpose lathe is equipped for joining the socket with the ball of a concave piston assembly with its geometrical tolerance requirements satisfied. The equipment is composed of a lathe, a double roll system and a roll pressing unit driven by the hydraulic system. The workpiece rotates by the spindle chuck of the lathe while the double roll system approaches perpendicularly to the central line of the workpiece. The equipment is successfully applied to precision joining of the ball and the socket for the concave piston assembly of a high pressure hydraulic pump.