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利用校正机构补偿滚齿机的传动误差,可以加工出5级齿轮和蜗轮以及高精度的SG—71型蜗轮副。我们以Y3180滚齿机为对象,测出其范成传动链综合误差曲线,利用FFT程序得到传动误差频谱图,找出传动链中影响误差的因素和大小,并以此为根据利用CAD技术设计校正机构:校正凸轮及其摆杆,校正偏心齿轮组件等,从而降低了低频误差和短周期误差。 这种方法能应用于SG—71型蜗杆倒坡加工机构的凸轮设计,使入口和出口的例坡在一次磨削中完成,提高了生产率,如与偏心齿轮组合,还可以补偿短周期误差,提高SC—71型蜗轮副的工作平稳性。
Using the correction mechanism to compensate the transmission error of gear hobbing machine, it can process 5-stage gear and worm gear and high-precision SG-71 worm gear pair. We Y3180 gear hobbing machine as the object, measured the Fan into a comprehensive error curve of the transmission chain, the use of FFT program to get the transmission error spectrum, find out the factors affecting the transmission chain and the size of the error, and as a basis for the use of CAD technology to design correction mechanism : Corrects the cam and its swing lever, corrects the eccentric gear assembly and so on, thus reduces the low frequency error and the short cycle error. This method can be applied to the cam design of the SG-71 Worm Down Machining Mechanism, which makes the entrance and exit of the sample slope completed in a single grinding process to improve the productivity. For example, in combination with the eccentric gear, the short cycle error can also be compensated, Improve the working stability of the SC-71 worm gear pair.