蝸輪蝸桿減(jian)速機(ji)是一(yi)種動力傳達(da)機(ji)構(gou)，利用(yong)齒輪的速度轉(zhuan)(zhuan)換器，將(jiang)電機(ji)(馬(ma)達(da))的回轉(zhuan)(zhuan)數(shu)減(jian)速到所要(yao)的回轉(zhuan)(zhuan)數(shu)，并(bing)得到較大轉(zhuan)(zhuan)矩(ju)的機(ji)構(gou)。在(zai)用(yong)于傳遞動力與運動的機(ji)構(gou)中，減(jian)速機(ji)的應(ying)用(yong)范圍相(xiang)當(dang)廣泛。

　　蝸(gua)(gua)(gua)(gua)輪蝸(gua)(gua)(gua)(gua)桿減速機基本結構(gou)主要(yao)(yao)由傳(chuan)動(dong)(dong)零件(jian)(jian)(jian)蝸(gua)(gua)(gua)(gua)輪蝸(gua)(gua)(gua)(gua)桿、軸、軸承、箱體(ti)及其附(fu)件(jian)(jian)(jian)所(suo)構(gou)成。可分為有三大基本結構(gou)部：箱體(ti)、蝸(gua)(gua)(gua)(gua)輪蝸(gua)(gua)(gua)(gua)桿、軸承與(yu)軸組合。箱體(ti)是蝸(gua)(gua)(gua)(gua)輪蝸(gua)(gua)(gua)(gua)桿減速機中所(suo)有配(pei)件(jian)(jian)(jian)的基座，是支(zhi)承固定軸系(xi)部件(jian)(jian)(jian)、保證傳(chuan)動(dong)(dong)配(pei)件(jian)(jian)(jian)正確(que)相(xiang)對位置并(bing)支(zhi)撐作用在減速機上荷載的重要(yao)(yao)配(pei)件(jian)(jian)(jian)。蝸(gua)(gua)(gua)(gua)輪蝸(gua)(gua)(gua)(gua)桿主要(yao)(yao)作用傳(chuan)遞(di)兩(liang)交錯軸之間(jian)的運動(dong)(dong)和(he)動(dong)(dong)力(li)，軸承與(yu)軸主要(yao)(yao)作用是動(dong)(dong)力(li)傳(chuan)遞(di)、運轉并(bing)提(ti)高效率。