直面性能要求的泵用齿轮高效设计方法

Efficient gear-design methods based directly on pump-performance

为建立一种泵用渐开线齿轮的高效简便设计方法,基于无根切和采用标准齿顶高系数与标准压力角的三限制条件,推导出齿轮泵的相关性能参数,并由此构建出由工况参数到性能参数到齿廓参数到齿轮参数的逆向设计方法。结果表明:齿数是主要的齿廓参数,最小齿数为6,逆向设计方法简单高效;重合度是影响流量脉动的直接要素,齿数越多,重合度越大,传动平稳性、流量脉动质量就越好,但轻量化与困油性能却越差等。

Focus on an efficient and simple gear-design method for external gear pumps,from no undercut,standardization of addendum coefficient and tip pressure angle,pump-performance parameters was derived,and then from working-condition parameters to pump-performance parameters to tooth-profile parameters to gear-design parameters,a new reverse gear-design method was constructed.All results showed that tooth-number was an leading tooth-profile parameter,the minimum tooth-number was six,and the reverse gear-design method was simple and efficient;contact-ratio was a direct factor affecting flow ripple,the more tooth-number was,the greater contact-ratio was,the better transmission stability and flow ripple quality were,but the worse lightweight effect and trapped-oil effect were,etc.