具體參數

混凝土拖泵(beng)支(zhi)重輪(lun)部件上有一配對錐齒(chi)輪(lun)，其中一個錐齒(chi)輪(lun)結構如圖1，材料為(wei)(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi) 輪(lun)的主要(yao)技(ji)術參數為(wei)(wei)(wei)(wei)：大端(duan)(duan)端(duan)(duan)面模數為(wei)(wei)(wei)(wei)4、齒(chi)數20、齒(chi)形角為(wei)(wei)(wei)(wei)20°、切(qie)向變(bian)位系(xi)數為(wei)(wei)(wei)(wei)0、徑向變(bian)位系(xi)數 為(wei)(wei)(wei)(wei)-0.27、大端(duan)(duan)齒(chi)高0.8mm、精度等級為(wei)(wei)(wei)(wei)8CB GB11365。由于齒(chi)面硬度要(yao)求為(wei)(wei)(wei)(wei)HRC56~64，因此(ci)，齒(chi)輪(lun)需(xu)要(yao)進行(xing)滲(shen)碳(tan)淬火(huo)處理，滲(shen)層深度要(yao)求為(wei)(wei)(wei)(wei)0.8-1.2mm。

從技術要求和精度等(deng)級(ji)來看(kan)，該(gai)齒(chi)輪(lun)的(de)(de)加(jia)工(gong)(gong)(gong)精度 等(deng)級(ji)要求不高(gao)，要確保該(gai)零(ling)件的(de)(de)加(jia)工(gong)(gong)(gong)質量(liang)，關鍵(jian)在于(yu)解決好(hao)錐齒(chi)加(jia)工(gong)(gong)(gong)和熱處理(li)工(gong)(gong)(gong)藝(yi)環節(jie)，由(you)于(yu)該(gai)零(ling)件 屬(shu)于(yu)試制階(jie)段，為降低加(jia)工(gong)(gong)(gong)成(cheng)(cheng)本，我們決定在臥式銑(xian)床(chuang)上采用(yong)成(cheng)(cheng)形齒(chi)輪(lun)銑(xian)刀銑(xian)齒(chi)法加(jia)工(gong)(gong)(gong)該(gai)錐齒(chi)輪(lun)，并通過(guo)制訂合理(li)的(de)(de)熱處理(li)工(gong)(gong)(gong)藝(yi)方法和參數來保證該(gai)齒(chi)輪(lun)的(de)(de)加(jia)工(gong)(gong)(gong)質量(liang)。