http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
구양,김경년,Koo, Yang,Kim, Gyung-Nyun 한국기계가공학회 2003 한국기계가공학회지 Vol.2 No.4
In this study, the grinding characteristics of CBN wheels, such as grinding force and surface roughness, have been compared and analyzed from various working conditions of spindle speed and depth of cut. To actualize high efficient grinding at ceramic and silicon nitride material, electrolytic in-process dressing (ELID) method has been applied at metal bonded diamond and CBN wheels. Super precision grinding using ductile mode at difficult-ta-cut materials could be performed.
CNC 공작기계 장착형 고속스핀들을 이용한 고속가공 실용화 기술
이용철(Yong-Chul Lee),곽태수(Tae-Soo Kwak),김경년(Gyung-Nyun Kim),이종열(Jong-Ryul Lee) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.2
A newly developed attachment type high-speed spindle can be easily attached to the conventional CNC machining center to allow high-speed machining with low investment costs. This study has focused on the application of a conventional CNC machining center equipped with an attachment type high-speed spindle. A specimen of plastic mold material has been machined to compare the cutting effectiveness of the high-speed machining center and the conventional machining center with the attachment type high-speed spindle respectively. The rotational accuracy of the spindles are measured by a transmission optic measurement system and the surface roughness of the workpiece in accordance with revolution speed(rpm) of the spindle are investigated respectively. As the experimental results, it was shown that the surface roughness of the machined workpiece was 3.42㎛Rmax, 0.46㎛Ra in the case of attachment type spindle and 1.81 ㎛Rmax, 0.275㎛Ra in the case of the high-speed machining center. Moreover, the mean rotational accuracy was 7.57㎛ in the case of the attachment type spindle and 7.39㎛ in the case of the high-speed machining center.