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低频振动铰孔能改善铰孔质量,这里介绍如图1所示的低频振动铰孔装置。电机7以2800转/分的转速起动,通过皮带轮8、10使偏心轴6以6000转/分旋转,带动拨叉4跳动,从而使振动轴11(即铰刀)作圆周旋转振动(频率为100Hz)。振动轴11的轴向振动,是靠梯形螺母5和拨叉4上的梯形螺杆的配合来实现的。为了保证轴向振动的可靠,在拨叉4的前端装有弹簧3,用以消除梯形螺母和螺杆的配合间隙和磨损,以保证轴向振动量。这就实现了铰刀既有圆周旋转振动,又有轴向振动。为了克服拨叉4跳动时的惯性冲击力,如图2所示,在拨叉4受力方向装有克服惯性力的弹簧D,使拨叉4上的工作面始终于偏心轴6接触,以保证铰
Low-frequency vibration reaming hole can improve the quality of reaming, shown here as shown in Figure 1 low-frequency vibration reaming device. The motor 7 is started at a speed of 2800 rpm and the eccentric shaft 6 is rotated at 6,000 rpm through the pulleys 8 and 10 to drive the shift fork 4 to jump so that the vibration shaft 11 (ie, the reamer) makes circumferential rotational vibration (at a frequency of 100Hz). The axial vibration of the vibration shaft 11 is achieved by the cooperation of the trapezoidal nut 5 and the trapezoidal screw 4 on the fork 4. In order to ensure the reliability of axial vibration, the front end of the fork 4 is equipped with a spring 3 to eliminate the clearance and wear of the trapezoidal nut and the screw to ensure the axial vibration amount. This realizes the reamer has both circumferential vibration, axial vibration. In order to overcome the inertia impact force when the fork 4 beating, as shown in Figure 2, in the force direction of the fork 4 is equipped with a spring D to overcome the inertia force, so that the working face of the fork 4 is always in contact with the eccentric shaft 6 Guaranteed hinge