在万能铣床上加工螺旋槽时,常借助挂轮表选取挂轮。可是,有的机床丝杠螺距或分度头传动比与挂轮表的制表条件不一致,就不能用挂轮表选取挂轮。这里介绍一种巧用挂轮表选取挂轮的方法,使之仍可查表选取挂轮。方法如下: 先用下述公式计算出查表用的修正导程L_1,再按 In the universal milling machine when processing spiral groove, often by selecting the hanging wheel table gear. However, some of the machine tool screw pitch or indexing head gear ratio and watch the table conditions are not consistent, you can not use the table to select the hanging wheel. Here is a clever use of the method of selecting the hanging wheel table, so that it can still check the table to select the wheel. The method is as follows: First use the following formula to calculate the table lookup correction lead L_1, then press