具體參數

混凝土拖(tuo)泵(beng)支(zhi)重(zhong)輪(lun)部件上(shang)有一配對錐齒(chi)(chi)(chi)輪(lun)，其中一個錐齒(chi)(chi)(chi)輪(lun)結構如圖1，材料為(wei)(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi) 輪(lun)的主要(yao)技術參數為(wei)(wei)(wei)：大端(duan)端(duan)面(mian)模數為(wei)(wei)(wei)4、齒(chi)(chi)(chi)數20、齒(chi)(chi)(chi)形角(jiao)為(wei)(wei)(wei)20°、切向(xiang)變位(wei)系數為(wei)(wei)(wei)0、徑向(xiang)變位(wei)系數 為(wei)(wei)(wei)-0.27、大端(duan)齒(chi)(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由于齒(chi)(chi)(chi)面(mian)硬(ying)度(du)要(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)輪(lun)需要(yao)進行滲(shen)(shen)碳淬火(huo)處(chu)理(li)，滲(shen)(shen)層深度(du)要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從(cong)技(ji)術(shu)要(yao)求和(he)精度(du)(du)等(deng)級來(lai)看，該(gai)齒(chi)輪的(de)加(jia)工(gong)(gong)(gong)精度(du)(du) 等(deng)級要(yao)求不(bu)高，要(yao)確保該(gai)零件的(de)加(jia)工(gong)(gong)(gong)質量，關鍵(jian)在于(yu)解決好錐齒(chi)加(jia)工(gong)(gong)(gong)和(he)熱處理(li)工(gong)(gong)(gong)藝環節(jie)，由于(yu)該(gai)零件 屬于(yu)試制階段(duan)，為降低(di)加(jia)工(gong)(gong)(gong)成本(ben)，我們決定在臥式(shi)銑(xian)床上采用成形(xing)齒(chi)輪銑(xian)刀(dao)銑(xian)齒(chi)法(fa)加(jia)工(gong)(gong)(gong)該(gai)錐齒(chi)輪，并通過制訂合理(li)的(de)熱處理(li)工(gong)(gong)(gong)藝方法(fa)和(he)參數來(lai)保證(zheng)該(gai)齒(chi)輪的(de)加(jia)工(gong)(gong)(gong)質量。