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전병윤(Jun Byoung Yoon),조현섭(Cho Hyun Sub),서관수(Suh Kwan Soo),조유종(Cho Yoo Jong),정용욱(Jung Young Yook),전만수(Joun Man Soo) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A double roll rotary forming equipment is presented in this paper. The equipment is developed 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 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.