在減速機(jī)家族中，行星減速機(jī)以其體積小，減速范圍廣，精度高等諸多有點(diǎn)，而被應(yīng)用于伺服、步進(jìn)、直流等傳動(dòng)系統(tǒng)中。其作用就是在保證精密傳動(dòng)下，主要被用來(lái)降低轉(zhuǎn)速增大扭矩和降低負(fù)載/電機(jī)的轉(zhuǎn)動(dòng)慣量比。

In reducer family, planetary reducer is applied to servo, step and DC transmission systems because of its small volume, wide range of deceleration and high accuracy. Its role is to ensure the precision drive, mainly used to reduce the rotational speed to increase the torque and reduce the load / motor inertia ratio.

降低減速機(jī)運(yùn)轉(zhuǎn)時(shí)的齒輪傳動(dòng)噪聲已成為行業(yè)內(nèi)的重要研究課題，國(guó)內(nèi)外不少學(xué)者都把齒輪傳動(dòng)中輪齒嚙合剛度的變化看成是齒輪動(dòng)載、振動(dòng)和噪聲的主要因素。減速機(jī)與機(jī)械設(shè)備間的正確安裝類(lèi)同減速機(jī)與驅(qū)動(dòng)電機(jī)間的正確安裝。用修形的方法，使其動(dòng)載荷及速度波動(dòng)減至小，以達(dá)到降低噪聲的目的。這種方法在實(shí)踐中證明是一種較有效的方法。

Reducing the gear transmission noise of the reducer has become  research topic in the industry. Many scholars both at home and abroad regard the change of gear tooth meshing stiffness as the main factor of gear dynamic load, vibration and noise. The method of modification is used to minimize the dynamic load and speed fluctuation in order to reduce noise. This method is proved to be a more effective method in practice.

減速機(jī)內(nèi)部齒輪寬度 在減速機(jī)傳動(dòng)空間允許時(shí)，增加齒輪寬度，可以減少恒定扭矩下的單位負(fù)荷。降低輪齒撓曲，減少噪聲激勵(lì)，從而降低傳動(dòng)噪聲。

The width of the internal gear of the reducer can be increased when the transmission space of the reducer is allowed, so that the unit load under ctant torque can be reduced. Reduce gear deflection, reduce noise excitation, thereby reducing transmission 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(kāi)曲線略呈凸形。當(dāng)齒輪齒面受外力產(chǎn)生變形時(shí)，可以避免對(duì)與之嚙合的齒輪產(chǎn)生干涉，并且可以降低噪音，延長(zhǎng)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.