具體參數

混凝土拖泵支重輪部件(jian)上有一配對(dui)錐(zhui)齒(chi)輪，其(qi)中一個錐(zhui)齒(chi)輪結構如圖1，材(cai)料為(wei)(wei)(wei)20CrMnTi，該齒(chi) 輪的(de)主要技術參數(shu)(shu)為(wei)(wei)(wei)：大端端面模數(shu)(shu)為(wei)(wei)(wei)4、齒(chi)數(shu)(shu)20、齒(chi)形角為(wei)(wei)(wei)20°、切向變位系數(shu)(shu)為(wei)(wei)(wei)0、徑向變位系數(shu)(shu) 為(wei)(wei)(wei)-0.27、大端齒(chi)高(gao)0.8mm、精(jing)度(du)等級為(wei)(wei)(wei)8CB GB11365。由(you)于齒(chi)面硬(ying)度(du)要求(qiu)為(wei)(wei)(wei)HRC56~64，因此，齒(chi)輪需要進行(xing)滲(shen)碳淬(cui)火處理，滲(shen)層(ceng)深(shen)度(du)要求(qiu)為(wei)(wei)(wei)0.8-1.2mm。

從(cong)技術要(yao)求和精度(du)等(deng)級(ji)來(lai)看(kan)，該齒(chi)(chi)(chi)輪的(de)加(jia)工(gong)(gong)精度(du) 等(deng)級(ji)要(yao)求不高，要(yao)確保(bao)該零件的(de)加(jia)工(gong)(gong)質量(liang)，關鍵在(zai)于(yu)解決好錐齒(chi)(chi)(chi)加(jia)工(gong)(gong)和熱處理(li)工(gong)(gong)藝(yi)環節，由于(yu)該零件 屬于(yu)試制(zhi)階段，為降低(di)加(jia)工(gong)(gong)成本，我們(men)決定在(zai)臥式銑床上采用成形(xing)齒(chi)(chi)(chi)輪銑刀銑齒(chi)(chi)(chi)法加(jia)工(gong)(gong)該錐齒(chi)(chi)(chi)輪，并通過(guo)制(zhi)訂合理(li)的(de)熱處理(li)工(gong)(gong)藝(yi)方法和參數來(lai)保(bao)證該齒(chi)(chi)(chi)輪的(de)加(jia)工(gong)(gong)質量(liang)。