在车床上镗削长径比较大的孔吋,常会产生振型耦合的自激振动,致使被加工孔较粗糙。而多次镗削的振纹再生效应,又会振崩刀刃。根据切削状态的理论分析(见镗削状态图1),其振动方向产生于切削法线与主切削力的夹角平分线M—M上。为了消除车床镗孔这一振动,我们设计了一种削扁镗杆(见图2)。 In the lathe boring the larger diameter hole, often produce vibration coupling self-excited vibration, resulting in the rough hole to be machined. The multiple boring effect of the regeneration of the vibration, will collapse sharp edge. According to the theoretical analysis of the cutting state (see Boring state Figure 1), the vibration direction is generated on the included angle bisector M-M between the cutting normal and the main cutting force. In order to eliminate the vibrations of the lathe boring, we designed a shaving boring bar (see Figure 2).