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直槽滚刀重磨后,习惯上规定前刃面偏心距不变,认为这样能保证其齿形精度,但是,从理论上来讲是不合乎道理的。近年来,直槽大负前角硬质合金滚刀的应用越来越普遍,有的厂家发现,用高级精度的这种滚刀精滚7级以上精度的硬齿面齿轮时,随着滚刀重磨量的增加,被滚削的轮齿渐开线误差,在齿顶处逐渐朝负向偏离(图1),一把价值昂贵的硬质合金滚刀,硬质合金刀片得不到有效的利用而过早报废。笔者通过试验和理论分析,发现这种现象的出现是内于刃磨方法不当所致。本文
After grooving, it is customary to stipulate that the eccentricity of the front blade will not change, which is considered to ensure the accuracy of its profile. However, it is theoretically unjustifiable. In recent years, the straight groove large negative anterior horn carbide hob applications more and more common, and some manufacturers have found that the use of such high-precision hob hob precision rolling hardened gears above 7, with the rolling The increase in the amount of knife regrinding, hobbing involute involutation error, at the addendum gradually deviate to the negative (Figure 1), a valuable carbide hob, carbide blades can not get Efficient use and scrapped prematurely. The author through experimental and theoretical analysis, found that the appearance of this phenomenon is caused by improper grinding methods. This article