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전성재(S. J. Jun),강인혁(I. H. Kang),조연상(Y. S. Cho),박흥식(H. S. Park),전태옥(T. O. Jun) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.4
Generally, Oxidized film are generated by friction and wear in lubricant oil. It is effect that the heat and pressure act on contact area. Because the electrons movement progress the oxidization, if the electrons movement be regulated, the thickness of oxidized film can be regulated and wear characteristics can improve. But, electronic current can deteriorate the friction characteristic, so various characteristics must be investigated on transforming of electronic current. Therefor, using the Norton equation, short current were transformed between ball and disk. Also, an experiment was carried out on friction and wear with ball on disk type tester. So, we studied up on effect of current for friction characteristics.
희귀분석을 이용한 STS304의 표면정도에 미치는 엔드밀 가공조건의 상관관계 추정
류미라(M.R.Ryu),이상재(S.J.Lee),배효준(H.J.Bea),진동규(D.K.Jin),전태옥(T.O.Jun),박흥식(H.S.Park) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
End-milling have been used widely in industrial system because it is effective to a material manufacturing with various shape. Recently the and-milling processing is needed the high-precise technique with good surface roughness and rapid time in precision machine part and electronic part. The optimim surface roughness has an effect in end-milling condition such as, cutting diretion, spindle speed, feed rate and depth depth of cut ete. Therefore this study was carried out to presume for mutual relation of end-milling condition to get optimum surface roughness by regression analysis. The results shown thet cofficient of determination(R?) of regression equation has a fine reliabi;ity over 80% and regression equation of surface is made by regression analysis