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범용 선반을 이용한 볼과 소켓의 정밀 체결을 위한 회전성형
전병윤(B. Y. Jun),조현섭(H. S. Cho),서관수(K. S. Suh),조유종(Y. J. Cho),정용욱(Y. U. Jeung),전만수(M. S. Joun) 한국생산제조학회 2006 한국생산제조시스템학회 학술발표대회 논문집 Vol.2006 No.5
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.
범용 선반을 이용한 볼과 소켓의 정밀 체결을 위한 회전성형
전병윤(B. Y. Jun),조현섭(H. S. Cho),서관수(K. S. Suh),조유종(Y. J. Cho),정용욱(Y. U. Jeung),전만수(M. S. Joun) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
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.
원웨이 클러치 베어링 외륜의 열간과 냉간 복합단조 공정 기술 개발
장수진(S. J. Jang),전병윤(B. Y. Jun),장성민(S. M. Jang),전만수(M. S. Joun),문호근(H. K. Moon),성현석(H. S. Sung),허민호(M. H. Heo) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.5
In this research, a hot and cold combined forging process for manufacturing net-shape one-way clutch bearing outer race of an automobile automatic transmission unit is developed. The process is composed of hot forging for manufacturing an optimized gear-like perform and precision cold forging for sizing the perform into final net-shape product. Finite element simulation techniques are applied to find the optimized process designs including blank and die shapes. The predictions and experiments are compared, revealing that they are in good agreement with each other. The dimensional test showed that the important dimensional requirements on gear tooth-like shape of the forged product were fulfilled.