具體參數

混(hun)凝土(tu)拖泵支重輪(lun)部(bu)件(jian)上有一(yi)配對錐齒(chi)輪(lun)，其中一(yi)個錐齒(chi)輪(lun)結構如圖1，材料(liao)為(wei)20CrMnTi，該齒(chi) 輪(lun)的主(zhu)要技術(shu)參(can)數(shu)(shu)為(wei)：大(da)端端面模(mo)數(shu)(shu)為(wei)4、齒(chi)數(shu)(shu)20、齒(chi)形(xing)角為(wei)20°、切向變位(wei)系(xi)數(shu)(shu)為(wei)0、徑向變位(wei)系(xi)數(shu)(shu) 為(wei)-0.27、大(da)端齒(chi)高0.8mm、精度等級(ji)為(wei)8CB GB11365。由于齒(chi)面硬(ying)度要求(qiu)(qiu)為(wei)HRC56~64，因此，齒(chi)輪(lun)需要進行滲(shen)碳淬火處理，滲(shen)層深(shen)度要求(qiu)(qiu)為(wei)0.8-1.2mm。

從技術要(yao)(yao)求和精度等級來看，該(gai)齒輪的(de)加(jia)工(gong)(gong)(gong)精度 等級要(yao)(yao)求不高，要(yao)(yao)確保該(gai)零(ling)件的(de)加(jia)工(gong)(gong)(gong)質量(liang)，關鍵(jian)在于解決(jue)(jue)好錐齒加(jia)工(gong)(gong)(gong)和熱處(chu)(chu)理工(gong)(gong)(gong)藝(yi)環(huan)節，由于該(gai)零(ling)件 屬于試制階段(duan)，為降低加(jia)工(gong)(gong)(gong)成(cheng)本(ben)，我們決(jue)(jue)定在臥式銑(xian)床上采用成(cheng)形齒輪銑(xian)刀(dao)銑(xian)齒法加(jia)工(gong)(gong)(gong)該(gai)錐齒輪，并通過制訂(ding)合理的(de)熱處(chu)(chu)理工(gong)(gong)(gong)藝(yi)方法和參數來保證該(gai)齒輪的(de)加(jia)工(gong)(gong)(gong)質量(liang)。