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。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。減速機(jī)是國(guó)民經(jīng)濟(jì)諸多領(lǐng)域的機(jī)械傳動(dòng)裝置，行業(yè)涉及的產(chǎn)品類(lèi)別包括了各類(lèi)齒輪減速機(jī)、行星齒輪減速機(jī)及蝸桿減速機(jī)，也包括了各種專(zhuān)用傳動(dòng)裝置，如增速裝置、調(diào)速裝置、以及包括柔性傳動(dòng)裝置在內(nèi)的各類(lèi)復(fù)合傳動(dòng)裝置等。

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)部齒輪精度等級(jí) 設(shè)計(jì)減速機(jī)時(shí)，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(jí)，忽略精度等級(jí)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.

齒輪聲輻射特征分析 在選擇用不同結(jié)構(gòu)形式的齒輪時(shí)，對(duì)其特定結(jié)構(gòu)建立聲輻射模型，進(jìn)行動(dòng)力學(xué)分析，對(duì)齒輪傳動(dòng)系統(tǒng)噪聲進(jìn)行預(yù)先評(píng)估。以便根據(jù)使用者的不同要求（使用場(chǎng)所，是 否無(wú)人操作，是否在城區(qū)內(nèi)，地上、地下建筑物有無(wú)特定要求，是否有噪聲防護(hù)，或無(wú)其他特定要求）去滿(mǎn)足。減速機(jī)行業(yè)屬于國(guó)民經(jīng)濟(jì)發(fā)展的基礎(chǔ)行業(yè)，從生活家電到汽車(chē)飛機(jī)、從生產(chǎn)工具到建筑機(jī)械，幾乎所有的機(jī)械傳動(dòng)系統(tǒng)中都需要使用到減速機(jī)。

The acoustic radiation characteristic analysis of gear in the selection of gear with different structure forms, set up the acoustic radiation model to its specific structure, carry on the dynamic analysis, and evaluate the gear transmission system noise in advance. In order to meet the users'  requirements (use sites, unmanned operati, whether there are specific requirements in the urban area, ground or underground buildings, noise protection, or other specific requirements).