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在滚齿过程中滚刀的刀齿与工件轴线的“对中”这一工序不复杂,费时也不多,但毕竟是件麻烦事,能否取消这一工序,对多批次、少批量的齿轮配件厂来说,还是有经济意义的。下面就这个问题谈一点看法。一、滚齿时的齿形误差滚齿的过程是相当于齿条与齿轮作无侧隙啮合的运转过程,此时由于滚刀的刀齿是不连续的,因此被一系列刀齿切出的成形包络切痕(即工件上的渐开线齿形曲面)是条不光滑的折线,此折线与理论渐开线之间有一定的误差(见图1)。
Hob hob process in the hobbing process and the workpiece axis of the “alignment” of this process is not complicated, time-consuming, but after all, is a troublesome thing, whether to cancel this process, the more batches, less batch Gear parts factory, it is still economically significant. Here’s a little talk about this issue. First, hobbing tooth profile error Hobbing process is equivalent to the rack and gear without backlash meshing operation, this time because hob cutter teeth are not continuous, so a series of knife cut out The forming envelope notch (ie, the involute tooth surface on the workpiece) is a non-smooth polyline with some error from the theoretical involute (see Figure 1).