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基本蜗杆为阿基米德螺旋面的齿轮滚刀(以下简称阿氏滚刀)应用很广。其齿形误差直接影响被切齿轮的啮合精度,故必须严格检查。这类滚刀其结构大体可分为以下四种:1)直沟零前角;2)螺旋沟零前角;3)直沟正前角;4)螺旋沟正前角。严格地说,后两种滚刀因基本蜗杆是一曲面蜗杆,故不属阿氏滚刀,但考虑到目前我国一般工具厂都是采用径向铲齿工艺,所以其侧铲面为阿氏螺旋面,为方便起见,仍列入阿氏滚刀内一起讨论。阿氏齿轮滚刀的齿形角有以下三种:1)基本蜗杆轴向齿形角a_0;2)侧铲螺旋面轴向齿形角a_x3)前刃面齿形角a_F。
The basic worm gear for the Archimedes helical hob (hereinafter referred to as the hob) is widely used. The toothed error directly affects the meshing accuracy of the cut gear, it must be strictly checked. This hob can be divided into the following four general structure: 1) Straight zero front; 2) helix zero rake; 3) Straight positive rake; 4) Helical positive rake. Strictly speaking, the latter two hobs because the basic worm is a curved worm, it does not belong to Abel hobs, but taking into account the general tool factory in our country are using radial shovel tooth technology, so its side shovel surface Helical surface, for convenience, is still included in the Abel Hob together to discuss. There are three types of helical gear Hob angle: 1) the basic worm axial tooth angle a_0; 2) the side tooth helical surface axial tooth angle a_x3) front blade tooth angle a_F.