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정성용(Sung-Yong Jung),양순철(Sun-Cheul Yang),정윤교(Yoon-Gyo Jung) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Currently development of Machine tool's technology have been in various gradually and rapidly. So it's also essentially necessary high-speed cutting tool which could endure from high cutting force. However there are some inherent difficulties in general cutting tool which is easy to wear in high speed cutting condition according to high rotational speed. Therefore, we polished tool surface using magnetic polishing technology to reduce friction between tool surface and workpiece. The obtained results from in this study, we can know to exist proper moving type of polishing tool and to be confirm the performance of polished tool in very high speed cutting range(12000 rpm).
자기연마기술을 이용한 고속절삭공구의 성능향상에 관한 연구
조종래(Jong Rae Cho),양순철(Sun Cheul Yang),정윤교(Yoon Gyo Jung) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.1
The magnetic fluid polishing technique can polish the tool of complex shape, because the polishing method which polishes as compress the workpiece by the magnetism abrasives to arrange to the linear according to the line of magnetic force. Therefore, we producted the magnetic fluid polishing device in order that mirror like finishing processes the tool surface. In order to a polishing condition selection, polishing characteristic was estimated by polishing conditions which are magnetic flux density, polishing speed, grain size, magnetic fluid. The tool was polished to the selected polishing condition. The result to evaluate the polished tool’s performance with the cutting force and tool wear, the polished tool's performance was improved compared with the tool not to polish.
정성용(Sung-Yong Jung),양순철(Sun-Cheul Yang),정윤교(Yoon-Gyo Jung) Korean Society for Precision Engineering 2008 한국정밀공학회지 Vol.25 No.2
Recently, with the development of high speed machining technology for difficult-cutting materials, to improve the cutting performance of cutting tool, fine surface finish of complex shape tools using magnetic polishing technology is in high demand. This study is, therefore, discussed and compared the cutting characteristics of polished tools by the adopted various magnetic polishing moving types a point of view the cutting forces and the tool life. Moreover, the practicality of magnetic polished tools in the wide range cutting conditions is investigated. From obtained results, It is confirmed that the CW(clockwise) revolution and oscillation type as the polishing moving type is proper and magnetic polished tool shows the excellence in high cutting speed range.
자기연마방식에 의한 절삭공구의 표면조도 개선이 공구성능에 미치는 영향
정은식(Un-Sik Jung),조종래(Jong-Rae Cho),양순철(Sun-Cheul Yang),정윤교(Yoon-Cyo Jung) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
Recently as the industrial development is accelerated and many kinds of materials is developed, a new machining process and system is required to achieve super precision surface finish. Especially to get ground surface finish for complicated shape of end-mill, it is impossible with the general machining method. To achieve high speed machining, we need to be established machining process by magnetic fluid polishing method. Finally an aim of this study is to estimate machining performance of cutting tool's roughness improvement using end-mill, polished by magnetic fluid polishing method. This new polishing process is very excellent to solve several problems, non-polished shape like flank and crater plan of end-mill. According to result from improved roughness of tool, actually tried to be machined under selected cutting condition. we descript relationship between roughness and cutting time, and tool performance, according to polishing method. From getting result of this study, we will expect that there is more advanced result under high speed machining condition by improved surface roughness of tool.