具體參數

混(hun)凝土拖泵(beng)支重輪(lun)(lun)部件上(shang)有一配對錐(zhui)齒(chi)(chi)(chi)輪(lun)(lun)，其中(zhong)一個錐(zhui)齒(chi)(chi)(chi)輪(lun)(lun)結構(gou)如圖1，材(cai)料(liao)為(wei)(wei)(wei)(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi) 輪(lun)(lun)的主要技(ji)術參數(shu)(shu)為(wei)(wei)(wei)(wei)(wei)：大端(duan)端(duan)面(mian)模數(shu)(shu)為(wei)(wei)(wei)(wei)(wei)4、齒(chi)(chi)(chi)數(shu)(shu)20、齒(chi)(chi)(chi)形角為(wei)(wei)(wei)(wei)(wei)20°、切向變(bian)位系數(shu)(shu)為(wei)(wei)(wei)(wei)(wei)0、徑向變(bian)位系數(shu)(shu) 為(wei)(wei)(wei)(wei)(wei)-0.27、大端(duan)齒(chi)(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)(wei)(wei)8CB GB11365。由于(yu)齒(chi)(chi)(chi)面(mian)硬度(du)要求(qiu)為(wei)(wei)(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)輪(lun)(lun)需要進行(xing)滲碳淬火處理，滲層深度(du)要求(qiu)為(wei)(wei)(wei)(wei)(wei)0.8-1.2mm。

從技術要求和精度等(deng)級來看(kan)，該齒(chi)輪的(de)(de)加(jia)(jia)工(gong)精度 等(deng)級要求不高，要確保(bao)該零件(jian)的(de)(de)加(jia)(jia)工(gong)質量，關鍵(jian)在(zai)于解(jie)決好錐齒(chi)加(jia)(jia)工(gong)和熱處理(li)工(gong)藝(yi)(yi)環節，由于該零件(jian) 屬于試制(zhi)階段，為降(jiang)低加(jia)(jia)工(gong)成本，我(wo)們(men)決定在(zai)臥式銑床上采(cai)用成形齒(chi)輪銑刀銑齒(chi)法加(jia)(jia)工(gong)該錐齒(chi)輪，并(bing)通過制(zhi)訂合理(li)的(de)(de)熱處理(li)工(gong)藝(yi)(yi)方(fang)法和參數來保(bao)證該齒(chi)輪的(de)(de)加(jia)(jia)工(gong)質量。