在镗床上,利用平旋盘镗孔操作方便、可靠,但在镗削深孔和孔距大的多孔系工件时,需要在平旋盘上安装较长的镗刀杆。这时,镗刀杆处于悬臂梁状态,加上刀盘导轨的滑动间隙,使镗刀杆在镗削时振动大、稳定性差,从而造成被加工工件的几何精度低、表面粗糙度高,且容易产生扎刀。振动,是影响刀杆工作稳定性的关键因素。利用附加振动来改变刀杆的固有振动频率,是克服镗杆振动的简易有效方法。经多次试验证明,利用图 In the boring machine, the use of flat rotary boring convenient and reliable, but in the boring deep hole and hole spacing of large porous workpiece, you need to install a long horizontal boring bar boring bar. At this moment, the boring bar is in the cantilever state, and the sliding clearance of the disc guide makes the boring bar to vibrate greatly during boring and has poor stability, resulting in low geometrical accuracy and high surface roughness of the workpiece to be machined Easy to produce knives. Vibration, is a key factor affecting the stability of the knife bar. The use of additional vibration to change the natural frequency of the knife bar is to overcome the boring bar vibration simple and effective method. After many tests proved that the use of maps