具體參數

混凝土(tu)拖(tuo)泵支重(zhong)輪(lun)(lun)部件上有一配對錐齒(chi)(chi)輪(lun)(lun)，其中一個錐齒(chi)(chi)輪(lun)(lun)結構如圖1，材(cai)料為(wei)20CrMnTi，該(gai)齒(chi)(chi) 輪(lun)(lun)的(de)主要技(ji)術參數(shu)為(wei)：大端(duan)端(duan)面模數(shu)為(wei)4、齒(chi)(chi)數(shu)20、齒(chi)(chi)形角為(wei)20°、切向變位系(xi)(xi)數(shu)為(wei)0、徑(jing)向變位系(xi)(xi)數(shu) 為(wei)-0.27、大端(duan)齒(chi)(chi)高0.8mm、精(jing)度等級為(wei)8CB GB11365。由于齒(chi)(chi)面硬度要求為(wei)HRC56~64，因此(ci)，齒(chi)(chi)輪(lun)(lun)需要進行滲碳淬火處理，滲層深(shen)度要求為(wei)0.8-1.2mm。

從技術要求和精度等級來看(kan)，該齒(chi)(chi)輪的加(jia)工(gong)(gong)(gong)(gong)精度 等級要求不高，要確保該零(ling)(ling)件(jian)的加(jia)工(gong)(gong)(gong)(gong)質量，關鍵(jian)在于解決好錐(zhui)(zhui)齒(chi)(chi)加(jia)工(gong)(gong)(gong)(gong)和熱處理(li)工(gong)(gong)(gong)(gong)藝環節(jie)，由于該零(ling)(ling)件(jian) 屬于試制階段，為降(jiang)低加(jia)工(gong)(gong)(gong)(gong)成(cheng)本(ben)，我們決定在臥式(shi)銑床上采用成(cheng)形齒(chi)(chi)輪銑刀銑齒(chi)(chi)法加(jia)工(gong)(gong)(gong)(gong)該錐(zhui)(zhui)齒(chi)(chi)輪，并通(tong)過制訂合理(li)的熱處理(li)工(gong)(gong)(gong)(gong)藝方法和參數來保證該齒(chi)(chi)輪的加(jia)工(gong)(gong)(gong)(gong)質量。