具體參數

混凝土拖(tuo)泵支重輪部件上有一配對錐齒輪，其(qi)中一個錐齒輪結(jie)構如圖1，材料為(wei)(wei)20CrMnTi，該齒 輪的主要(yao)技術參數(shu)為(wei)(wei)：大(da)端(duan)端(duan)面模數(shu)為(wei)(wei)4、齒數(shu)20、齒形(xing)角為(wei)(wei)20°、切向變位系(xi)數(shu)為(wei)(wei)0、徑向變位系(xi)數(shu) 為(wei)(wei)-0.27、大(da)端(duan)齒高(gao)0.8mm、精度等(deng)級(ji)為(wei)(wei)8CB GB11365。由于齒面硬度要(yao)求為(wei)(wei)HRC56~64，因此，齒輪需要(yao)進(jin)行(xing)滲(shen)碳淬火處理(li)，滲(shen)層深度要(yao)求為(wei)(wei)0.8-1.2mm。

從技術要求和(he)精(jing)度等(deng)級(ji)(ji)來(lai)看，該(gai)(gai)齒(chi)輪的(de)加(jia)工(gong)(gong)(gong)精(jing)度 等(deng)級(ji)(ji)要求不(bu)高(gao)，要確保該(gai)(gai)零件(jian)的(de)加(jia)工(gong)(gong)(gong)質量，關鍵在于解決好(hao)錐齒(chi)加(jia)工(gong)(gong)(gong)和(he)熱(re)處(chu)理(li)(li)工(gong)(gong)(gong)藝環節，由于該(gai)(gai)零件(jian) 屬于試(shi)制階段，為降低加(jia)工(gong)(gong)(gong)成本，我們決定在臥式銑床上采用成形齒(chi)輪銑刀銑齒(chi)法加(jia)工(gong)(gong)(gong)該(gai)(gai)錐齒(chi)輪，并(bing)通過制訂(ding)合理(li)(li)的(de)熱(re)處(chu)理(li)(li)工(gong)(gong)(gong)藝方法和(he)參(can)數來(lai)保證該(gai)(gai)齒(chi)輪的(de)加(jia)工(gong)(gong)(gong)質量。