论文部分内容阅读
从齿根沉切說起在滾齿机上工作过的工人,都知道有这样一种坏現象,就是当正齿輪齿数很少,滚出的牙齿根部,发生了被滚刀切去太多、切到肉內的‘齿根沉切’现象。图16表示用15°滾刀、切8牙正齿輪时所得的牙齿形狀。由图中可以看出,有齿根沉切的牙齿,它的根部特別瘦弱,牙齿的力量显得不够;同时有用的側面曲綫(漸开线部分)也被切掉,使齿輪的啮合率降低,影响到傳动的正确性。
Speaking from the roots of sinking workers working on the hobbing machine, we all know that there is such a bad phenomenon, that is, when the spur gear teeth few, get out of the root of the tooth, cut off too much hob cut, cut Into the meat of the “root sinking” phenomenon. Fig. 16 shows the tooth shape obtained when the spur gear 8 is cut with a 15-degree hob. As can be seen from the figure, there is a tooth root sinking teeth, its root is particularly thin, the strength of the teeth appears inadequate; useful side profile (involute portion) is also cut off, the gear meshing rate is reduced, Affect the correctness of transmission.