Application of Adaptive Acceleration-deceleration Control Method of Parametric Curve Interpolator in Spiral Bevel Gear NC Machining

In order to research the method of spiral bevel gear NC machining,the NC generation of spiral bevel gear cutting is realized by means of the vector transformation.The coordinated motion of NC coordinate axes is expressed as quintic parametric spline functions,which use the rotation angle of the work gear as the parameter.The velocity profile is analyzed,where the feedrates are varied due to the contour errors.An adaptive acceleration-deceleration control method of parametric curve interpolator is presented.The simulation of interpolation shows that accelerations and decelerations are controlled with the consideration of the limited jerk,and the shock imposed on the mechanical parts by the variation of accelerations and jerks is effectively avoided.The control method is combined with spiral bevel gear NC machining,and is applied to the self-developed spiral bevel gear NC milling machine to control the gear cutting.Experimental results show that the proposed method is feasible and effective in the control of NC machining for the spiral bevel gear.