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在螺旋铣床上加工蜗轮时,一般都用螺旋铣刀,并且对螺旋铣刀的要求非常严格,不但螺旋铣刀的模数(或径节)要和被加工的蜗轮的模数(或径节)相同,而且螺旋铣刀的直径还要和蜗杆的直径相等,这蜗杆是同被加工的蜗轮相咬合的。也就是说,加工不同的蜗轮(蜗杆也不同)时,要准备不同模数(或径节)、不同直径的螺旋铣刀。这对产品复杂、零件种类繁多、数量较少(指蜗轮)的工厂,是十困难的。我厂根据螺旋铣刀铣削原理,研究出用排刀代替螺旋铣刀来铣齿的方法,效果良好。
When machining a worm gear in a helical milling machine, a helical cutter is generally used, and the requirements for the helical cutter are very strict. Not only the modulus (or diameter) of the helical cutter needs to be the same as that of the worm gear being machined ) And the diameter of the helical cutter is also equal to the diameter of the worm, which is engaged with the worm gear being machined. In other words, the processing of different worm (worm is also different), to be prepared with different modulus (or pitch), different diameter spiral cutter. This is a complex product, a wide variety of parts, a small number (referring to worm wheel) factory, is ten difficult. I plant milling cutter based on the principle of spiral, developed with a row of cutter instead of a helical cutter to gear milling method, the effect is good.