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| Research on Synchronous Control of Elliptical Vibration Cutting |
| HUO Jianqiang, ZHANG Chen, WANG Xiaoxue, GAN Xiaoming, SHI Han |
| ( College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China ) |
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Abstract The micro-texture on the surface of rotating body manufactured by elliptical vibration cutting is obtained under the combined motion of rotation of spindle, feed of platform and elliptical vibration of device. Not completely realtime synchronization between the rotation of spindle and the output of device can cause the deviation of micro-texture processing. In order to solve this problem, a new synchronous control method based on the rotating angle is proposed, which can reset the sinusoidal signal of device at the reference of spindle to correct the position error caused by the drift of rotation speed. The real-time synchronization between device and spindle can be achieved by judging the rotating signal and outputting different amplitudes of voltage corresponding to different angles. Then a synchronous control module based on LabVIEW FPGA is built. It is verified in the experiments that the axial arrangement of micro-texture of rectangle array processed utilizing this method is parallel to the central axis. The deviation between experimental and simulating results is no more than 0.1° about the the angle between two arrangements in different directions. The depth of texture is changed expectedly following rotating angle. Thus, this method has the ability of real-time synchronous control of elliptic vibration cutting device.
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2020, 
