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一般鼓形齿联轴器的齿顶高系数ha*=1,径向间隙系数C*=0.25,全齿高h=2.25m(模数),内外齿分度圆弧齿厚大致相等。它的主要优点是内外齿加工工艺性较好,可用标准齿轮滚刀和插齿刀进行加工。但是,这种鼓形齿联轴器的外齿齿根抗弯强度比内齿套的齿形要低,因此,外齿往往先于内齿磨损而折断,从而使联轴器失效。因而,提高外齿抗弯强度,是提高这种联轴器承载能力和寿命的关键所在。国外为提高鼓形齿联轴器的外齿强度常采用的方法有二:一是减薄内齿齿厚而增加外齿齿厚,使内外齿的抗弯强度接近一致;另一种方法是采用短齿型内外齿,降低外齿齿高,使
General drum tooth gear tooth top high coefficient ha * = 1, the radial clearance coefficient C * = 0.25, full tooth height h = 2.25m (modulus), internal and external tooth pitch arc tooth thickness roughly equal. Its main advantage is that internal and external teeth processing technology is better, available standard gear hob and gear shaper for processing. However, the outer tooth root of such a crown gear coupling has a lower flexural strength than that of the inner sleeve, so that the outer teeth tend to break before the inner teeth wear and thus the coupling fails. Therefore, to improve the flexural strength of external teeth, is to improve the bearing capacity and life of this key. In order to improve the external tooth strength of drum-shaped tooth coupling abroad, there are two common methods: one is to reduce the thickness of internal teeth and increase the thickness of external teeth, so that the flexural strength of internal and external teeth are nearly the same; the other method is Using short-tooth-type internal and external teeth, reducing the external tooth height, so