This paper deals with the influence of the end mill helix angle on the flatness and surface quality of aluminium (EN AW 6082) thin-walled parts. The three teeth solid end mills of 12 mm diameter with same and different helix angle of third tooth were designed. The tests were performed using the HSC 105 linear CNC machine and following cutting parameters: cutting speeds (800, 100 and 1200 m.min~(?1)), feed per tooth (0.12 mm), cutting depth (for roughing 10 mm and for finishing 5 mm). Evaluation of surface quality of the processed thin-walled parts shows that the helix angle of the end mills has a significant influence on the surface quality of the thin-walled parts. The best results were obtained in the case of end mill with different 35° helix angle of third tooth and cutting speed 1000 m.min~(?1).
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机译：本文研究了立铣刀螺旋角对铝薄壁零件（EN AW 6082）的平面度和表面质量的影响。设计了直径为12mm的第三齿相同和不同螺旋角的三齿实心立铣刀。测试是使用HSC 105线性数控机床并按照以下切削参数进行的：切削速度（800、100和1200 m.min〜（？1）），每齿进给量（0.12 mm），切削深度（粗加工10 mm和精加工5毫米）。对加工后的薄壁零件的表面质量的评估表明，立铣刀的螺旋角对薄壁零件的表面质量有重大影响。在不同的第三齿螺旋角为35°，切削速度为1000 m.min〜（？1）的立铣刀中，可获得最佳效果。
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