Influence on Tool Vibration of Trapezoidal Chip Breaker Groove Depth in Process of Chip Curling Control
It is emulated that titanium alloy Ti6Al4V cut by cemented carbide YG8 tool. Only the depth of trapezoidal chip breaker groove is changed,and other parameters of the chip breaker groove remain constant. The influence of depth of trapezoidal chip breaker groove on tool vibration is obtained by analyzing the wave of cutting forces. The results show that under ideal conditions (only self-excited vibrations are considered),the groove depth has little effect on the frequency of tool vibration at each stage. With the increase of the groove depth,the amplitudes of the tool in all directions gradually are increased at the stage from the chip flowing into the chip breaking groove to the beginning of flowing into bottom of the chip breaker groove. In the stage of chip flow through the bottom of the groove,the amplitudes of tool vibration along all direc-tions are increased first and then decreased as the groove depth increased. In the stage of chip flow through the groove back,with the increase of groove depth,the amplitude of too vibration along the main motion direction and feed direction are increased first and then decreased,but the amplitude of tool vibration along the depth of cut direction is no obvious pattern.
万方数据
维普
