具體參數

混凝(ning)土拖泵支重輪部件上有一配對錐齒(chi)(chi)(chi)(chi)輪，其(qi)中一個錐齒(chi)(chi)(chi)(chi)輪結構如圖1，材料為(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi)(chi) 輪的主要(yao)技術(shu)參數(shu)(shu)為(wei)(wei)：大(da)端端面模數(shu)(shu)為(wei)(wei)4、齒(chi)(chi)(chi)(chi)數(shu)(shu)20、齒(chi)(chi)(chi)(chi)形(xing)角(jiao)為(wei)(wei)20°、切向變(bian)位(wei)系(xi)數(shu)(shu)為(wei)(wei)0、徑(jing)向變(bian)位(wei)系(xi)數(shu)(shu) 為(wei)(wei)-0.27、大(da)端齒(chi)(chi)(chi)(chi)高0.8mm、精度(du)(du)等級(ji)為(wei)(wei)8CB GB11365。由(you)于齒(chi)(chi)(chi)(chi)面硬度(du)(du)要(yao)求為(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)(chi)輪需要(yao)進行滲(shen)(shen)碳(tan)淬(cui)火處理(li)，滲(shen)(shen)層深度(du)(du)要(yao)求為(wei)(wei)0.8-1.2mm。

從技術要(yao)求和精(jing)度(du)(du)等(deng)級來看，該齒(chi)(chi)輪(lun)的加(jia)工(gong)精(jing)度(du)(du) 等(deng)級要(yao)求不高，要(yao)確保(bao)該零(ling)件的加(jia)工(gong)質(zhi)量，關鍵(jian)在于(yu)解決(jue)好錐齒(chi)(chi)加(jia)工(gong)和熱處理(li)(li)(li)工(gong)藝(yi)環節，由于(yu)該零(ling)件 屬于(yu)試制階(jie)段(duan)，為降低加(jia)工(gong)成本(ben)，我們決(jue)定在臥式銑(xian)床上采用成形齒(chi)(chi)輪(lun)銑(xian)刀銑(xian)齒(chi)(chi)法(fa)加(jia)工(gong)該錐齒(chi)(chi)輪(lun)，并通過制訂合理(li)(li)(li)的熱處理(li)(li)(li)工(gong)藝(yi)方法(fa)和參數來保(bao)證該齒(chi)(chi)輪(lun)的加(jia)工(gong)質(zhi)量。