By Yongguo Wang
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Extra info for Advanced manufacturing technology and cutting tools : selected, peer reviewed papers from the 2011 Seminar on Advanced Manufacturing Technology and Cutting Tools, August 20-22, 2011, Shanghai, China
6. Different from the case of radial runout, the fundamental error contributes to the total axial error motion and can not be removed. Fundamental error and residual error form the Synchronous error. Similar to radial error motion, the asynchronous error is the main component of the total axial error. 59µm It is necessary to point out that even better machining accuracy can be achieved despite of the spindle error motions measured above. In Reference , the cutting experiments with micro cutters on AZ150 machine tool were conducted.
The torque increases with the growing cutting speed under 6000 r/min when cutting feed is 1000mm/min, but it decreases with the increase of cutting speed when cutting speed over 6000r/min. Similarly, when the cutting feed is 3000mm/min, torque has the same changing tendency to the cutting feed 1000mm/min with the cutting speed threshold value of 6000 r/min. Meanwhile, higher feed rate also lead to higher values of torque. 2. The best results in terms of diameter dimension accuracy were obtained at the cutting speed of 6000 r/min and cutting feed of 2000 mm/min.
According to , the friction coefficient of vegetable oils and synthetic ester is one-half of mineral oil in double-disc rig experiment. When lubricants are applied between the contacting surfaces, the friction and wear can be minimized. There are three lubrication regimes, boundary lubrication, mixed lubrication and hydrodynamic lubrication depending on the amount of lubricant film separating the surfaces and boundary lubrication is the main lubrication mode. 5). In addition, the free fatty acids in castor oil react to metal surface, and metallic soap and monofilm are produced.
Advanced manufacturing technology and cutting tools : selected, peer reviewed papers from the 2011 Seminar on Advanced Manufacturing Technology and Cutting Tools, August 20-22, 2011, Shanghai, China by Yongguo Wang