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目前在机器制造业中为进行圆形、花键和其它表面的高生产率加工,采用了好些拉削图形,但通用的主要是二三把拉刀组成一套的加工方法。本文介绍的分组拉刀能减小断面宽度,分三次切削,可使全套拉刀的数量减少一半,并提高了拉刀耐用度和被加工表面精度。与由一个切槽齿和一个修光齿组成的交变切削的花键拉刀不同,推荐的拉刀组由两个切槽齿和一个修光齿组成,这样的结构可以用较少齿数的切削齿切下余量。在切削组内齿数的增加靠下述办法来达到:将各
Currently in the machine tool manufacturing industry, rounding, splines and other surfaces with high productivity machining, using a number of broach graphics, but the general is mainly composed of twenty-three broaches a processing method. This article describes the group broaches can reduce the cross-sectional width, divided into three cuts, the number of broaches can be reduced by half, and to improve the broach durability and surface finish accuracy. Unlike the alternating-cut spline broach consisting of a grooving tooth and a sharpening tooth, the recommended broach group consists of two grooved teeth and a sharpened tooth, and this structure can be made with a smaller number of teeth Cutting teeth cut off the margin. The increase in the number of teeth in the cutting group is achieved by: