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切削时切下的切屑主要是靠与主切削刃平行或成7—15°角的各种断屑槽和断屑台进行断屑的,这种刀具在重磨对断屑槽会被磨去,并需重新加工,这就缩短了刀具的使用寿命(因为在一次重磨内就磨掉刀片的较大部分)和
The chips cut during cutting are mainly chip breaking by various chip breaking grooves and chip breaking tables that are parallel to the main cutting edge or at an angle of 7 to 15 °. Such chips are ground to the chip breaking grooves , And need to be reworked, which shortens the life of the tool (because it takes away the larger part of the blade in a single regrinding) and