Hy-Vo齿形链异形销轴压出力的理论计算与实测验证

Theoretical Calculation and Experimental Verification of Special Pin Press-out force for Hy-Vo Silent Chain

Hy-Vo齿形链是由导板与长异形销轴通过过盈联结的方式构成刚性的矩形框架,框架连接内外复合啮合链板、外啮合链板和短异形销轴组成环接的Hy-Vo齿形链。所以导板与长异形销轴的联结牢固度就尤为重要,它关系到整链的使用寿命,影响导板链节联结牢固度的主要因素为导板与异形销轴间的过盈量。当设计的过盈量确定后,链板异形孔和异形销轴的精度对联结牢固度有着至关重要的影响。精度散差越大,联结牢固度的离散度越大。通过引入销轴当量直径的概念来计算异形销轴在导板中的压出力。计算结果与实际检测结果进行比对分析,验证了该计算方法是合理可行的。

The Hy - Vo silent chain is a rigid rectangular frame composed of guide plate and long special pin through interference connection. The frame, which combines together internal and external combined engagement chain plate, outer meshing chain plate and short special - shaped pin, forms into a ring connected Hy -Vo silent chain. So the connecting firmness between long shaped pin and guide plate is very important. It matters to the lifetime of whole chain. The main factor influencing the connecting firmness of guide plate is the amount of interference between guide plates and special pins. When the designed amount of interference is confirmed, the precision of chain plate special hole and special pin has a very important influence on the connecting firmness. The more the precision scattering differs, the more the dispersion of connecting firmness is. By introducing the concept of equivalent diameter of the pin, the press - out force between special pin and guide plate is calculated. By comparing the calculated results with the actual test results, it is verified this method is reasonable and feasible.