具體參數

混凝(ning)土拖泵(beng)支重輪部件上有一配對錐齒(chi)(chi)輪，其中(zhong)一個錐齒(chi)(chi)輪結(jie)構(gou)如圖(tu)1，材(cai)料為(wei)20CrMnTi，該(gai)齒(chi)(chi) 輪的主要技術參數(shu)為(wei)：大端(duan)端(duan)面模數(shu)為(wei)4、齒(chi)(chi)數(shu)20、齒(chi)(chi)形角為(wei)20°、切向(xiang)變位(wei)系數(shu)為(wei)0、徑向(xiang)變位(wei)系數(shu) 為(wei)-0.27、大端(duan)齒(chi)(chi)高0.8mm、精度等級為(wei)8CB GB11365。由于齒(chi)(chi)面硬度要求為(wei)HRC56~64，因(yin)此，齒(chi)(chi)輪需要進行滲碳淬火處理，滲層(ceng)深度要求為(wei)0.8-1.2mm。

從(cong)技術要(yao)求和(he)精度等級來看(kan)，該齒(chi)輪的加(jia)工(gong)(gong)(gong)精度 等級要(yao)求不高，要(yao)確保該零件(jian)的加(jia)工(gong)(gong)(gong)質(zhi)量(liang)，關鍵在(zai)于解決好錐(zhui)(zhui)齒(chi)加(jia)工(gong)(gong)(gong)和(he)熱(re)處理工(gong)(gong)(gong)藝環(huan)節，由(you)于該零件(jian) 屬于試(shi)制階段(duan)，為降低加(jia)工(gong)(gong)(gong)成(cheng)本(ben)，我(wo)們決定在(zai)臥(wo)式銑(xian)床上采(cai)用成(cheng)形齒(chi)輪銑(xian)刀銑(xian)齒(chi)法(fa)加(jia)工(gong)(gong)(gong)該錐(zhui)(zhui)齒(chi)輪，并通過制訂合理的熱(re)處理工(gong)(gong)(gong)藝方法(fa)和(he)參數來保證該齒(chi)輪的加(jia)工(gong)(gong)(gong)質(zhi)量(liang)。