Thanks to its good specific strength and modulus, carbon fiber-reinforced plastic (CFRP) is widely used in such fields as aerospace and automotive. Nonetheless, it is very likely that the serious tool wear and some surface quality defects occur in machining, such as delamination, tear, burr, and so forth. Thus, this paper carried out the experimental research into the tool wear in milling carbon fiber composites with spiral staggered diamond-coated milling cutter. According to the evolution of tool wear micro-morphology, the tool wear process was obviously divided into two stages, i.e., coating particle wear and coating shedding. It was found that the former was dominated by the abrasive wear mechanism and the latter the fatigue wear mechanism. In addition, wear mechanism and cutting force variation of each stage were analyzed. In addition, the coating shedding happened obviously in advance with the increase of milling speed. In the period of coating particle wear, the tool was in good cutting performance, and its cutting force changed slowly, while after it came into coating shedding period with the aggravation of tool wear, the cutting force increased greatly and the cutting performance worsened obviously. Thus, the appropriate control over the tool wear of spiral staggered diamond-coated milling cutter is the key to improving the machining quality of carbon fiber composites.
Spiral staggered cutter Tool wear Wear mechanism Cutting force
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This study received support from the National Natural Science Foundation of China (Grant No. 51475125), the Natural Science Foundation of Heilongjiang Province (Grant No. E2016047), and the Program for Harbin Science and Technology Innovation Talents under (Grant No.2015RQQXJ039).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
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