2 . the long - addendum coefficient of pump gear must make the gear in the condition of undercut . base on these conclusions , the basic parameters of pump gear are optimum 本文提供了完整的泵齒輪最佳參數(shù)的計(jì)算公式,計(jì)算方法既能使泵齒輪參數(shù)達(dá)到最佳,而且計(jì)算簡(jiǎn)單,工藝性也較好。
After thoroughly analyzing the influence of each pump parameters on the gear pump performance , the paper developes the criterion for optimum gear parameters , which can be utilizied in practice easily for gear manufacturing using normal involute gear hob with two - fillet type . the conclutions studied by the paper are : 1 . both the addendum coefficient and the deddendum coefficient of the pump gear should be 1 . 125 以目前國(guó)內(nèi)普遍使用的雙圓弧頭全齒高為2 . 5倍模數(shù)漸開線標(biāo)準(zhǔn)滾刀作為泵齒輪的加工刀具,通過對(duì)齒輪加工原理的分析,提出了欲使泵齒輪參數(shù)達(dá)到最佳,泵齒輪的齒頂高系數(shù)和齒根高系數(shù)都為1 . 125 ;對(duì)變位系數(shù)的確定應(yīng)考慮到泵齒輪的根切、齒頂厚、重合度以及側(cè)隙因素;泵齒輪為避免過渡曲線干涉,必然要存在根切現(xiàn)象。