一种鼓形齿联轴器的侧隙设计方法

To make crown gear coupling work properly under the limit misalignment angle, a quick and accurate strategy for the backlash amount is proposed. The hub tooth surface is generated by continuous modification for tooth profile along the tooth width direction, and the sleeve tooth surface is processed by a shaping cutter. Then the assembling relationship of the crown gear coupling under misalignment angle is established by the spatial coordinate transform three-dimensional finite element analysis model is thus established. Following tooth contact analysis, the clearance between adjacent teeth of hub and sleeve without considering backlash is determined and the formula for the minimum circumferential backlash of crown gear coupling is achieved. Taking a crown gear coupling as an example, the locations of minimum clearance between adjacent teeth and the minimum clearance distribution gathered by the proposed strategy are compared with the results obtained by Alfares's method and finite element analysis. The results indicate that the tooth surfaces between adjacent teeth interfere with each other, amount of the minimum clearance design increases with the increasing misalignment angle, the position of the minimum clearance design is located in the pure tilted area, and the accuracy is much higher than that from Alfares.