http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고정밀 공작기계의 열적효과 측정 및 불확도 추정에 관한 연구
손덕수(Deok-Soo Son),김상화(Sang-Hwa Kim),박일환(Il-Hwan Park) 한국기계가공학회 2013 한국기계가공학회지 Vol.12 No.2
When the main spindle of high precision machine tools are run many hours, heat is generated in bearing parts of the inside of the spindle. Also, headstock is appeared distortion by inside and outside temperature difference of a machine. This paper studies method to measure behavior of machine tool about these thermal effects. In addition, it estimates measurement uncertainty factors which can be appeared in thermal effects measurement. Finding the factor of thermal affect measurement is important for estimation of measurement uncertainty. This paper measures thermal effects of high precision machine tools and evaluates the important factors of uncertainty.
정밀 공작기계의 회전 영역별 진동 및 불평형량 감소에 따른 가공 정밀도 영향에 관한 연구
손덕수(Deok-Soo Son),김상화(Sang-Hwa Kim),박일환(Il-Hwan Park) 한국기계가공학회 2013 한국기계가공학회지 Vol.12 No.2
Precision machine tools for high dignity cutting are needed for efforts to improve machining accuracy. However, there are many factors to improve machining accuracy. This study investigated how machining accuracy changes when variation and unbalance amount in rotational speed domain is decreased. Machining accuracy of initial machine tools depends on manufacturing and assembly of parts such as bearing. And then, vibration and noise vary with volume of unbalance amount when it is rotation, so it effects unbalance amount. Also vibration and noise increased by unbalance shorten spindle"s life and it especially makes worse boring accuracy. Therefore, this study studied the change of roundness and cylindricity of workpiece when it decreases variation and unbalance in rotational speed domain.
정현석(Hyun-Suk Jung),손덕수(Deok-Soo Son),장세호(Se-Ho Jang) 산업기술교육훈련학회 2008 산업기술연구논문지 (JITR) Vol.13 No.1
The injection molding industry is in the hard situation where it cannot make both ends meet and guarantee the best products because of unstable injection molding machine which is not enough in reproduction and repetition. Besides, there is the deficiency of human resources because most people dislike laborious jobs and, so far, we have not developed new products which substitute for plastics. However, from now on, all the industrial fields including household electric appliances and automobile industry will have to be dependant on the plastic industry. By the result of above situations, there will be much more studies on the plastic goods. Through this study, I come to realize the importance of industries involved in the injection molding and research laboratories and colleges that study injection molding machine.