具體參數

混凝土拖泵支重輪部件上有一(yi)配(pei)對(dui)錐(zhui)(zhui)齒(chi)(chi)(chi)(chi)輪，其中一(yi)個錐(zhui)(zhui)齒(chi)(chi)(chi)(chi)輪結構如圖(tu)1，材(cai)料為(wei)(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi)(chi) 輪的(de)主要(yao)技術參(can)數為(wei)(wei)(wei)：大端(duan)端(duan)面(mian)模數為(wei)(wei)(wei)4、齒(chi)(chi)(chi)(chi)數20、齒(chi)(chi)(chi)(chi)形角為(wei)(wei)(wei)20°、切(qie)向變(bian)(bian)位(wei)系數為(wei)(wei)(wei)0、徑向變(bian)(bian)位(wei)系數 為(wei)(wei)(wei)-0.27、大端(duan)齒(chi)(chi)(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由于齒(chi)(chi)(chi)(chi)面(mian)硬(ying)度(du)要(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)(chi)輪需(xu)要(yao)進行滲碳淬火處理，滲層深度(du)要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從技術要(yao)(yao)求和精度等級來看，該齒輪(lun)(lun)的(de)加工(gong)(gong)精度 等級要(yao)(yao)求不高，要(yao)(yao)確保(bao)該零件(jian)的(de)加工(gong)(gong)質(zhi)量，關鍵在于(yu)解(jie)決(jue)(jue)好錐齒加工(gong)(gong)和熱處理工(gong)(gong)藝環節(jie)，由(you)于(yu)該零件(jian) 屬于(yu)試(shi)制階段，為降低加工(gong)(gong)成(cheng)本，我(wo)們決(jue)(jue)定在臥式銑床上(shang)采用成(cheng)形齒輪(lun)(lun)銑刀銑齒法加工(gong)(gong)該錐齒輪(lun)(lun)，并通過制訂合理的(de)熱處理工(gong)(gong)藝方法和參數來保(bao)證該齒輪(lun)(lun)的(de)加工(gong)(gong)質(zhi)量。