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最近我们试验成功了一种小型的整体飞刀,加工出了m=1.5的双头小蜗轮。经过检验,其相邻周节误差为0.009mm,周节累积误差为0.012mm。装配后进行涂色检验,接触斑点在齿长及齿高两个方向上均为70％以上,达到了6级蜗轮的精度标准。整体飞刀的特点是结构比较简单,工艺性较好,生产效率比普通飞刀高,尤其是加工多头蜗轮最适用。多头蜗轮的螺旋角较大,要制造A级精度以上的多头蜗轮滚刀,当螺旋角大于12°时,即使对于专业工厂来说也是很困难的,而采用整体飞刀则可以满足一般多头蜗轮的精度要求。
Recently, we successfully tested a small overall flying knife, the processing of a m = 1.5 double-headed small worm. After testing, the error of its adjacent week is 0.009mm, the cumulative error of the week is 0.012mm. Assembled after the color test, contact spots in both the tooth length and tooth height are more than 70%, reached a 6-level worm gear accuracy standards. The overall characteristics of the flying knife is relatively simple structure, good technology, production efficiency higher than ordinary flying knives, especially the most suitable for processing long worm gear. The helix angle of a long worm gear is large. To manufacture a long worm gear hober of grade A accuracy or more, it is very difficult even for a professional factory when the helix angle is greater than 12 °, while the general flyer can satisfy the general long worm gear The accuracy requirements.