Removal of critical regions by radius-varying trochoidal milling with constant cutting forces
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This work presents a novel milling strategy for complex pocket machining by integrating radius-varying trochoidal (RVTR) toolpath with contour parallel (CP) toolpath. Based on a quantitative analysis on the fluctuation of material removal rates (MRR), the proposed strategy is able to precisely identify critical regions from complex pocket geometries, and then by integrating flexible trochoidal radius with adaptive trochoidal step, the proposed approach is able to integrate the RVTR toolpath into CP toolpath under a consistent transition of material removal rate. Moreover, by applying RVTR toolpath, the cutting force can be maintained constantly when machining critical regions. Comparing with the trochoidal milling function available with current mainstream CAM software, experimental investigation has shown that the proposed RVTR-CP toolpath integration strategy offers a better machining condition with minimized fluctuation of cutting forces. Moreover, the total length of toolpath is decreased considerably and hence the machining efficiency is greatly improved.
KeywordsPocket milling Critical milling regions Trochoidal milling Material removal rate Cutting force control
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This work was supported by the National Nature Science Foundation of China [grant numbers 51575192 and 51775192] and the Science & Technology Research Program of Guangdong, China [grant numbers 2015B090922010 and 2017B010110010].
- 1.Choy HS, Chan KW (2003) Modeling cutter swept angle at cornering cut. Int J CAD/CAM 3(1):1–12Google Scholar
- 2.Ibaraki S, Yamaji I, Matsubara A (2010) On the removal of critical cutting regions by trochoidal grooving. Precis Eng 34(3):467–473. https://doi.org/10.1016/j.precisioneng.2010.01.007 CrossRefGoogle Scholar
- 5.Uddin MS, Ibaraki S, Matsubara A, Nishida S, Kakino Y (2007) A tool path modification approach to cutting engagement regulation for the improvement of machining accuracy in 2D milling with a straight end mill. J Manuf Sci Eng 129(6):1069–1079. https://doi.org/10.1115/1.2752526 CrossRefGoogle Scholar