http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
- 검색키워드
- 저자 : C. H. Park(박천홍) (검색결과 162 건)
- 무료
- 기관 내 무료
- 유료
-
-
박천홍(C. H. PARK),김인찬(I. C. KIM),정윤교(Y. K. CHUNG),이후상(H. S. LEE) Korean Society for Precision Engineering 1997 한국정밀공학회지 Vol.14 No.5
In the case of direct connecting the nut of ballscrew to guide table, machining error and misalignment of ballscrew largely affect to the motional accuracy of guideway. For decreasing these influences, two type of floating couplings; leaf spring type and hybrid type which releases the table from nut of ballscrew except feed and rotational direction is proposed in this study. In order to verify practical availability of the proposed floating couplings, motional accuracy, dynamic characteristics and micro step response of hydrostatic guideway, mounted with each type of couplings are tested. The conventional fixed type coupling is also tested as the reference in characteristics. From the results of experiments, it is proved that the hybrid type coupling is superior to other couplings and is available to high precision feeding system with ballscrew.
-
-
-
-
박천홍(C.H. Park),이후상(H.S. Lee),신영재(Y.J. Shin),이군석(G.S. Lee),김춘배(C.B. Kim) Korean Society for Precision Engineering 1997 한국정밀공학회지 Vol.14 No.3
In this paper, the development of a precision CNC lathe prototype for mirror surface machining is presented. To obtain high precision machining accuracy, a hydrostatically supported precision spindle and a sliding guideway with turcite pad are adopted as the motion elements. The machining accuracy of the prototype machine, and the motional accuracy of its motion elements are tested and evaluated to confirm the validity of the application of these elements on the prototype. The hydrostatic spindle shows 0.09μm of rotational accuracy and the guideway shows about 0.8μm/170mm of horizontal straightness. The surface roughness of cupper and aluminium cylinder machined by the prototype machine with diamond tool are 0.07μm and 0.10μmRmax respectively. From these results, it is verified that the prototype lathe is available for high precision machining.
-
-
-
-
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
