A novel taper design method for face‑milled spiral bevel and hypoid gears by completing process method
A novel taper design method for face‑milled spiral bevel and hypoid gears by completing process method
复制标题
面铣螺旋锥齿轮和准双曲面齿轮的全新锥度设计方法
DOI：
10.1007/s12541-021-00591-1
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发表时间：
2021
影响因子：
1.9
通讯作者：
Yajun Huang
中科院分区：
文献类型：
--
作者：
Yu Yang;Shimin Mao;Wei Cao;Yajun Huang
针对完整加工法面铣螺旋锥齿轮，为保证齿厚和齿距宽度与锥距成比例变化，提出了一种新的锥度设计方法。根据ISO标准对齿轮副毛坯尺寸进行计算后，根据完整工艺法的加工原理，重新设计了齿轮齿根角和小齿轮齿根角。因此，重新设计的轮凹齿面和轮凸齿面的平均螺旋角可以都等于轮的原始设计的平均螺旋角;同样地，重新设计的小齿轮凹齿面和小齿轮凸齿面的平均螺旋角可以都等于小齿轮的原始设计的平均螺旋角。由此，轮齿厚和齿隙宽度与轮锥距离的比率更稳定，并且小齿轮齿厚和齿隙宽度与小齿轮锥距离的比率也更稳定。最后，将该方法应用于一个面铣螺旋准双曲面齿轮副，重新设计的齿轮和小齿轮的螺旋角等于原设计的平均螺旋角。对于车轮，弦厚、弦间距与锥距之比的取值范围比ISO标准修改后的取值范围减小了39%以上;对于小齿轮，弦厚、弦间距与锥距之比的取值范围比ISO标准修改后的取值范围减小了45%以上。
For the face-milled spiral bevel and hypoid gears by the completing process method, in order to ensure that the tooth thickness and the tooth space width change in proportion to the cone distance, a novel taper design method is proposed. After the computation of blank dimensions of a gear pair according to ISO standard, the root angle of the wheel and the root angle of the pinion are redesigned based on the machining principle of the completing process method. Thus, the redesigned mean spiral angles of the wheel concave and convex tooth surface can be both equal to the original designed mean spiral angle of the wheel; likewise, the redesigned mean spiral angles of the pinion concave and convex tooth surface can be both equal to the original designed mean spiral angle of the pinion. By this, the ratios of the wheel tooth thickness and tooth space width to the wheel cone distance are more stable, and the ratios of the pinion tooth thickness and tooth space width to the pinion cone distance are more stable, too. Finally, this method is applied to a face-milled spiral hypoid gear pair, and the redesigned spiral angles of the wheel and the pinion are equal to the original designed mean spiral angles. For the wheel, the ranges of the ratios of the chordal thickness and the chordal space width to the cone distance are reduced more than 39% compared with those modified by ISO standard; for the pinion, the ranges of the ratios of the chordal thickness and the chordal space width to the cone distance are reduced more than 45% compared with those modified by ISO standard.