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페룰의 무심 연삭 가공시 실험계획법 및 회귀분석 적용에 관한 연구
이정현(Jung-Hyun Lee),이은상(Eun-Sang Lee),조순주(Soon-Ju Cho),최헌종(Hon-Zong Choi),이석우(Seok-Woo Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
The surface roughness in centerless grinding is mainly affected by the many process parameters. For decreasing the surface roughness, the control of grinding machining parameters is very important. This paper deal with the analysis of the process parameters such height of center, tilting angle of the regulating wheel, speed of regulating wheel, developed based on factorial design and regression model. The effect of grinding parameters on the surface roughness was evaluated the utilization of the regression analysis was evaluated with constraints of the surface roughness.
Thermal Deformation Analysis of an Orbital Grinding System Grinding Process
이현민(Hyeon Min Lee),최우천(Woo Chun Choi),조창래(Chang Rae Cho),조순주(Soon Ju Cho) Korean Society for Precision Engineering 2016 한국정밀공학회지 Vol.33 No.7
An orbital grinding system uses a special motion to machine crankshafts in ships. When a crankshaft is operated, eccentric pins rotate and a grinding wheel moves in order to grind the pins. Thermal error caused by heat generated in the grinding process decreases the quality of the final product. In this study, the thermal error of an orbital grinding system caused by heat generation was investigated in order to predict the extent of thermal error that can occur during the grinding process. Since the machine position changes during orbital grinding, the pin part is divided into 30 degree intervals and heat is generated. Total thermal error was measured by summing the thermal errors associated with the pin and the grinding wheel. Total thermal error was found to reach a maximum at 60 degrees and a minimum at 210 degrees because of the shape of the crankshaft.