| Citation: | XIE Hailong, DONG Zhigang, KANG Renke, et al. Chip shape and cutting temperature of helical milling of C/E composites[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(2): 328-334. doi: 10.13700/j.bh.1001-5965.2016.0161(in Chinese)
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Carbon/epoxy (C/E) composites are widely used in manufacture of aircraft structural components because of its excellent properties. It is easy to delaminate and tear when processing C/E composites, and the high cutting temperature is the main cause of defects. As a new hole-machining method, helical milling attracted plenty of attention owning to its advantages in processing C/E composites compared with traditional drilling. The helical milling experiments were performed with specially designed helical milling equipment on C/E composite. A thermal infrared imager is used to measure the cutting temperature after precision calibration using a thermocouple in a constant temperature oven. The effects of the processing parameters on the cutting temperature are analyzed. According to the kinematic principle of helical milling and the cutting principle, the origin and influence factor of temperature are analyzed based on the shape and size of the undeformed chip. The results are helpful in understanding the machining mechanism of helical milling, and determining the reasonable processing parameters of helical milling.
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