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一、概述在重型设备制造中经常会遇到大导程丝杠和螺母副的加工问题。大导程丝杠和螺母副多数作为传递动力的构件,丝杠本身直径较大,且为多头螺纹,在用车削加工时,由于导程较大具有一定困难,加工出的工件的螺纹精度和光洁度也较难满足要求。当用盘形铣刀来铣削此类丝杠及螺母副时,一方面由于铣刀齿形较复杂,刀具制造困难;另一方面为避免切削时的干涉,盘形铣刀直径也受到一定限制。故在生产中,工厂常用指状铣刀来加工。指状铣刀设计的主要工作是齿形的计算,目前常用的方法是根据工件端面齿形曲线方程y=f(x)求解超越方程,如参考文献第644页—646页
I. Overview In heavy equipment manufacturing often encounter large lead screw and nut processing problems. Large lead screw and nut pairs as the most power transmission components, the screw itself larger diameter, and for the multi-head thread, turning in the processing, due to the larger lead has some difficulties, the accuracy of the workpiece thread and Finish is also more difficult to meet the requirements. When using a disc cutter to mill such a screw and nut pair, on the one hand due to the complexity of cutter tooth profile, tool manufacturing difficulties; the other hand, in order to avoid cutting interference, disc cutter diameter is also subject to certain restrictions . Therefore, in production, the factory commonly used finger milling cutter to process. The main work of the finger milling cutter design is to calculate the tooth shape. At present, the commonly used method is to solve the transcendental equation according to the tooth profile equation y = f (x) at the end face of the workpiece. For example, page 644-646