[特开昭53-11388] 以往使用的车刀如图1(a)、(b)所示,切削刃的位置高于刀杆弯曲中心轴线X-X。因此,当切削刃的后面摩损时,车刀在切削力的作用下弯向切削方向,同时,其摩损面朝着啃入工件的方向运动,使摩损面和工件发生干涉而产生附加切削力,引起颤振。 如果把车刀设计成如图1(C) [Unexamined Japanese Patent Publication No. 53-11388] As shown in FIGS. 1 (a) and 1 (b), a conventionally used lathe tool has a cutting edge position higher than the arbor center X-X. Therefore, when the back of the cutting edge is worn, the turning tool is bent to the cutting direction under the action of the cutting force, and at the same time, the wear surface moves in the direction of biting into the work piece to make the wear surface interfere with the work piece to generate additional Cutting force, causing chatter. If the turning tool designed as shown in Figure 1 (C)