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홍성오,김홍배,조규재,Hong, Sung-Oh,Kim, Hong-Bae,Cho, Gyu-Jae 한국기계가공학회 2003 한국기계가공학회지 Vol.2 No.2
Base and saddle feed drive system in machine tool puts in operation for Improvement of life and endure by high frequency heat treatment. In this time, work requirement of establishment to gets by repeat experimentation. In this paper, using the finite elementary method, we predict and revision processing, and gets minimizing of deformation and reduce the progress of Grinding works. Moreover, having high frequency heat treatment, the maximum deformation genesis m the middle parts without slideway length. Take deformation Into finite element program (ANSYS) of taper process in roughing process, after having high frequency heat treatment, existed quantity of deformation can be reduced down to 80 percents.
홍성오,김흥배,조규재 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-
In order to achieve high precision machine tools, the research for performance enhancement of feed drive systems is required. Development of the high speed feed drive system has been a major issue for the past few decades in machine tool industries. The reduction of the tool change time as well as rapid travel time can enhance the productivity. However, the high speed feed drive system generates more heat in nature, which leads thermal expansion that has adverse effects on the accuracy of machined parts. Stick-slip friction has a great influence on the contouring accuracy of CNC machine tools. In this paper table levitation system has been developed for the stick-slip in a feed drive systems. And also, the driving position is set near the center of the main slideway. From the results, it is confirmed that yaw error and straightness can be improved.
접촉 센서를 이용한 CNC 선반 열변형에 따른 위치오차 개선에 관한 연구
홍성오 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4
Development of high speed feed drive system has been a major issue for the past few decades in machine tool industries. The reduction of the tool change time as well as rapid travel time can enhance the productivity. However, the high speed feed drive system generates more heat in nature, which leads thermal expansion that has adverse effects on the accuracy of machined parts. The detail of the model proposed is described in the paper together with the experimental methodologies using a proposed compact measurement system to examine the validity of the proposed approach. The results showed the machining accuracy could be maintained to better than ±5㎛ while using this sensor.