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RISS 인기검색어
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- 저자 : 박길종(Kil Jong Park) (검색결과 2 건)
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염한길(Han Kil Yeom),이승우(Seung Woo Lee),박길종(Kil Jong Park) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Thermally induced errors of machine tools could be reduced by oil cooler. For precise temperature control, both cooling and heating should be implemented. There are three major control methods of thermal errors. The on-off method has the largest market share as a result of its lower price, although the accuracy of temperature control is relatively lower, while the inverter method is mostly offered as an option for high precision machine tools due to its high control accuracy. But this method has complicated control system and high price. The hot gas by-pass method, which offers a compromise between the two method. In this study, we tested on-off and hot gas by-pass control methods and analyzed performance and economic efficiency.
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이승우(Seung Woo Lee),염한길(Han Kil Yeom),박길종(Kil Jong Park) Korean Society for Precision Engineering 2009 한국정밀공학회지 Vol.26 No.3
In accordance with the trend for high-speed multi-axes, and the increasing technical sophistication of machine tools, thermal deformation has become an important factor in the accuracy of machine tools. It was analyzed that thermal deformation error accounts for about 70% of all errors made with machine tools. For precise temperature control, both cooling and heating should be implemented. A hot gas bypass type cooling cycle method has a simplified structure and temperature control accuracy to with in ±0.1 ℃. In this study, the performances of oil cooler system, including temperature controllability according to hot gas floe and preset temperature sustainability according to temperature load, were tested. It is expected that this study will contribute to the development and performances of oil cooler system, which could minimize thermal errors and improve the quality of precision machine tools.
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