減速器是一種由封閉在剛性殼體內(nèi)的齒輪傳動、蝸桿傳動、齒輪-蝸桿傳動所組成的獨(dú)立部件，常用作原動件與工作機(jī)之間的減速傳動裝置 。在原動機(jī)和工作機(jī)或執(zhí)行機(jī)構(gòu)之間起匹配轉(zhuǎn)速和傳遞轉(zhuǎn)矩的作用，在現(xiàn)代機(jī)械中應(yīng)用極為廣泛。

The reducer is an independent component  of gear transmission, worm drive and gear worm drive enclosed in a rigid shell. It is often used as a deceleration between the original and the working machines. The matching speed and transfer torque between prime movers and working machines or actuators are widely applied in modern machines.

減速機(jī)內(nèi)部齒輪精度等級 設(shè)計(jì)減速機(jī)時，設(shè)計(jì)者往往從經(jīng)濟(jì)因素考慮，盡可能比較經(jīng)濟(jì)的確定齒輪精度等級，忽略精度等級是齒輪產(chǎn)生噪聲與側(cè)隙的標(biāo)記。

When the reducer is designed in the gear precision grade of the reducer, the designers often cider the economic factors as much as  to determine the gear precision level as much , and ignore the precision grade as the mark of the gear noise and the backlash.

減速機(jī)內(nèi)部齒輪變位系數(shù)選擇 正確合理選擇變位系數(shù)，不但可以湊合中心距，避免齒輪根切，保證滿足同心條件，改善齒輪的傳動性能和提高其承載能力及提高齒輪的使用壽命，還可以有效控制 側(cè)隙、溫升與噪聲。

The change coefficient of gear displacement coefficient in the reducer is selected correctly and reasonably. It can not only make the center distance, avoid the gear cutting, meet the conditi, improve the transmission performance of the gear and improve its bearing capacity and improve the service life of the gear, but also can effectively the side gap, temperature rise and noise.

減速機(jī)內(nèi)部齒輪齒形修整（修緣和修根）和齒頂?shù)菇?將齒頂?shù)凝X形切削成比正確的漸開曲線略呈凸形。當(dāng)齒輪齒面受外力產(chǎn)生變形時，可以避免對與之嚙合的齒輪產(chǎn)生干涉，并且可以降低噪音，延長齒輪壽命。

The internal gear of the reducer is trimmed (trim and trim) and tooth top chamfering to make the tooth shape of the tooth top  convex than the correct involute curve. When the gear tooth surface is deformed by external force, it can avoid interference to the gears engaged with it, and can reduce noise and prolong the service life of gears.