具體參數

混凝土拖泵支重輪(lun)部(bu)件上有一配對錐(zhui)齒(chi)(chi)(chi)輪(lun)，其中一個錐(zhui)齒(chi)(chi)(chi)輪(lun)結構如圖1，材料為(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi) 輪(lun)的主要技術參數(shu)(shu)(shu)(shu)為(wei)(wei)：大端(duan)端(duan)面(mian)模數(shu)(shu)(shu)(shu)為(wei)(wei)4、齒(chi)(chi)(chi)數(shu)(shu)(shu)(shu)20、齒(chi)(chi)(chi)形(xing)角(jiao)為(wei)(wei)20°、切(qie)向變位系(xi)數(shu)(shu)(shu)(shu)為(wei)(wei)0、徑(jing)向變位系(xi)數(shu)(shu)(shu)(shu) 為(wei)(wei)-0.27、大端(duan)齒(chi)(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)8CB GB11365。由于齒(chi)(chi)(chi)面(mian)硬度(du)要求(qiu)為(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)輪(lun)需要進行(xing)滲碳淬火處理，滲層(ceng)深(shen)度(du)要求(qiu)為(wei)(wei)0.8-1.2mm。

從技術要(yao)求(qiu)和(he)(he)精度(du)(du)等(deng)級(ji)來看，該齒(chi)輪的加工(gong)精度(du)(du) 等(deng)級(ji)要(yao)求(qiu)不高，要(yao)確保該零件的加工(gong)質量，關(guan)鍵在于解決好錐齒(chi)加工(gong)和(he)(he)熱處理工(gong)藝環節，由于該零件 屬(shu)于試制階段，為降低加工(gong)成本，我們決定(ding)在臥式銑床(chuang)上(shang)采用成形齒(chi)輪銑刀銑齒(chi)法加工(gong)該錐齒(chi)輪，并(bing)通過(guo)制訂(ding)合理的熱處理工(gong)藝方法和(he)(he)參數(shu)來保證該齒(chi)輪的加工(gong)質量。