具體參數

混凝(ning)土拖泵支(zhi)重(zhong)輪(lun)(lun)部件上有一(yi)配對錐齒(chi)輪(lun)(lun)，其中一(yi)個錐齒(chi)輪(lun)(lun)結構如圖1，材(cai)料為(wei)(wei)(wei)(wei)20CrMnTi，該齒(chi) 輪(lun)(lun)的主(zhu)要技(ji)術(shu)參數(shu)為(wei)(wei)(wei)(wei)：大端(duan)端(duan)面模數(shu)為(wei)(wei)(wei)(wei)4、齒(chi)數(shu)20、齒(chi)形角為(wei)(wei)(wei)(wei)20°、切向變位系數(shu)為(wei)(wei)(wei)(wei)0、徑向變位系數(shu) 為(wei)(wei)(wei)(wei)-0.27、大端(duan)齒(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)(wei)8CB GB11365。由于(yu)齒(chi)面硬度(du)要求(qiu)為(wei)(wei)(wei)(wei)HRC56~64，因此，齒(chi)輪(lun)(lun)需要進行滲碳(tan)淬(cui)火處理(li)，滲層深度(du)要求(qiu)為(wei)(wei)(wei)(wei)0.8-1.2mm。

從技術要(yao)求和精(jing)度(du)等(deng)級來看(kan)，該(gai)(gai)齒輪的(de)(de)(de)加(jia)(jia)工(gong)(gong)(gong)精(jing)度(du) 等(deng)級要(yao)求不高，要(yao)確保該(gai)(gai)零(ling)(ling)件的(de)(de)(de)加(jia)(jia)工(gong)(gong)(gong)質量，關鍵在于(yu)解(jie)決好(hao)錐齒加(jia)(jia)工(gong)(gong)(gong)和熱處理(li)工(gong)(gong)(gong)藝(yi)環節，由于(yu)該(gai)(gai)零(ling)(ling)件 屬于(yu)試制(zhi)階(jie)段(duan)，為(wei)降低加(jia)(jia)工(gong)(gong)(gong)成本，我(wo)們決定在臥式銑床上采用成形齒輪銑刀(dao)銑齒法加(jia)(jia)工(gong)(gong)(gong)該(gai)(gai)錐齒輪，并通過制(zhi)訂合理(li)的(de)(de)(de)熱處理(li)工(gong)(gong)(gong)藝(yi)方法和參數來保證該(gai)(gai)齒輪的(de)(de)(de)加(jia)(jia)工(gong)(gong)(gong)質量。