具體參數

混凝土拖泵(beng)支(zhi)重輪部件上有一配對錐(zhui)齒(chi)(chi)輪，其中(zhong)一個錐(zhui)齒(chi)(chi)輪結構如圖1，材料(liao)為(wei)(wei)20CrMnTi，該(gai)齒(chi)(chi) 輪的主(zhu)要(yao)技術參(can)數為(wei)(wei)：大端(duan)端(duan)面(mian)模數為(wei)(wei)4、齒(chi)(chi)數20、齒(chi)(chi)形角為(wei)(wei)20°、切向變(bian)位系數為(wei)(wei)0、徑(jing)向變(bian)位系數 為(wei)(wei)-0.27、大端(duan)齒(chi)(chi)高0.8mm、精度等級為(wei)(wei)8CB GB11365。由于(yu)齒(chi)(chi)面(mian)硬度要(yao)求(qiu)(qiu)為(wei)(wei)HRC56~64，因此，齒(chi)(chi)輪需要(yao)進行滲碳(tan)淬火處理(li)，滲層深度要(yao)求(qiu)(qiu)為(wei)(wei)0.8-1.2mm。

從技術要(yao)求(qiu)和精(jing)度等級來看，該齒(chi)輪(lun)的加(jia)(jia)工(gong)(gong)(gong)精(jing)度 等級要(yao)求(qiu)不高，要(yao)確保(bao)該零件的加(jia)(jia)工(gong)(gong)(gong)質量，關鍵在于解決(jue)好錐齒(chi)加(jia)(jia)工(gong)(gong)(gong)和熱處(chu)理(li)工(gong)(gong)(gong)藝(yi)環節，由于該零件 屬于試制階段，為降低(di)加(jia)(jia)工(gong)(gong)(gong)成(cheng)本，我們決(jue)定在臥式銑床上(shang)采用成(cheng)形齒(chi)輪(lun)銑刀銑齒(chi)法(fa)加(jia)(jia)工(gong)(gong)(gong)該錐齒(chi)輪(lun)，并通過制訂合理(li)的熱處(chu)理(li)工(gong)(gong)(gong)藝(yi)方法(fa)和參數來保(bao)證該齒(chi)輪(lun)的加(jia)(jia)工(gong)(gong)(gong)質量。