渐开线圆柱齿轮副滑动率_重合度计算浅析_莫江涛.pdf

410100 3 3 TH132.413 A doi 10.3969/j.issn.1006-0316.2017.03.017 (2017) 03 0062 05 Discussion on Slide Ratio, Contact Ratio of Involute Gear Pair MO JiangtaoZHANG TianqiQUAN Wenxian ( Changsha Research Institute of SANY Heavy Energy, Changsha 410100, China ) Abstract Slide ratio, contact ratio of involute gear pair are very important parameters in gear pair design, the calculation formulas or definitions are given directly in existing standards and publishing papers without any discussion, which makes some confusion in choosing these parameters reasonably in our daily works. So, in the first part of this paper, three equivalent formulas with different independent variables (such as pressure angle at driving or driven gear tip, pressure angle at pitch point) for computing the relative sliding ratio of involute gear pair are demonstrated in detail, the value and physical meaning at the extreme working position is discussed. Secondly, formulas for computing proportion of one pair tooth or two pair teeth during one engagement period is performed, and the formulas is extended to the general situation of contact ratio greater than three. Key words involute gear pair slide ratio contact ratio 1 [1]  V V t 1 t 2