Research on CFRP Milling Considering Continuity of Left-handed Cutting Edges

WANG Zegang;WANG FujiLU Xiaohong;ZHAO Meng;FAN Junfeng

1. School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning,116024
• Online:2020-04-25 Published:2020-06-11

考虑左旋切削刃切削连续性的碳纤维增强树脂基复合材料铣削研究

1. 大连理工大学机械工程学院，大连，116024
• 基金资助:
国家自然科学基金资助项目（51575082）；
辽宁联合基金资助项目（U1508207）；
中央高校基本科研业务费专项资金资助项目（DUT16TD01）

Abstract: When CFRP was machined by a right-handed cutting edge milling tool, the fiber layers were subjected to unidirectional axial forces and was liable to cause delaminations and burr damages. Multi-tooth milling tool with the left and right-handed cutting edges coexisting the two-way axial forces on the fiber layers might effectively restrain the damages. However, how to ensure that each layer of fibers was subjected to the cutting actions of left and right-handed cutting edges becomes the key to suppressing damages. Herein, selecting the multi-tooth milling tool as the research object, three types of multi-tooth milling tools with continuous, overlapping and discontinuous cutting area of left-handed cutting edge were obtained by designing different angles of left-handed helical grooves. The testing results show that there are a few burrs and flanges on the surfaces of CFRP when the cutting area is continuous. When the cutting area overlaps, there is no burrs and tear damages on the surfaces of CFRP. When the cutting area is discontinuous, there are a lot of burrs and tear damages on the machined surfaces. In addition, the surface roughness increases as the angle of left-handed helical groove increases.

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