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《Chinese Journal of Mechanical Engineering》 2003-12
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STUDY ON THE KEY TECHNOLOGY OF CAM CNC TURNING SYSTEM

Jiang Simin Wang Xiankui Wu Dan Si Yong (Tsinghua University)  
At present, the common methods of machining cam still are milling or contour cam machining. This method has low product efficiency, and can not fit with the mass product requirement. The method of machining cam is studied based on the CNC turning cam, and research the key technology of CNC turning cam. The effective method is presented and one new approach is provided for cam machining. In general, during CNC turning cam, rake angle and cutting speed will change greatly along with the cam contour position changing. In order to ensure the rake angle as constant, employ high frequency linear servo motor to drive the tool sway with high frequency. To obtain the cam contour, uses the high frequency linear servo motor to drive the tool move to-and-fro with high frequency, so the tool will track the cam contour with real time. In order to ensure the cutting speed as constant, the new method is presented that the rotate speed of main shaft will change with the cam contour, by this method, the tool length will be prolonged and the external roughness of cam will be improved.
【Fund】: 国家“十五”攻关课题(BA203B04)
【CateGory Index】: TG51
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