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为了加工矩形螺旋花键孔(见图1),我厂设计并制造了大螺旋角矩形花键拉刀(以下简称螺旋花键拉刀),拉出了合格的螺旋花键孔。
In order to process rectangular spiral spline holes (see Figure 1), our factory designed and manufactured a large helix angle rectangular spline broach (hereinafter referred to as spiral spline broach), pulled out the qualified spiral spline hole.