具體參數

混凝土拖泵支重(zhong)輪部件(jian)上(shang)有一配(pei)對錐(zhui)齒(chi)(chi)輪，其中一個錐(zhui)齒(chi)(chi)輪結構如(ru)圖1，材(cai)料為(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi)(chi) 輪的主要(yao)(yao)技術參數(shu)為(wei)(wei)(wei)：大(da)端端面模數(shu)為(wei)(wei)(wei)4、齒(chi)(chi)數(shu)20、齒(chi)(chi)形角(jiao)為(wei)(wei)(wei)20°、切向(xiang)變位系數(shu)為(wei)(wei)(wei)0、徑向(xiang)變位系數(shu) 為(wei)(wei)(wei)-0.27、大(da)端齒(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由于(yu)齒(chi)(chi)面硬度(du)要(yao)(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)輪需要(yao)(yao)進行(xing)滲(shen)碳淬(cui)火處理，滲(shen)層深度(du)要(yao)(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從技術(shu)要求和(he)精度等級來看(kan)，該齒(chi)輪(lun)的(de)(de)加工(gong)(gong)精度 等級要求不高(gao)，要確保該零(ling)件(jian)的(de)(de)加工(gong)(gong)質量，關鍵(jian)在(zai)(zai)于解決好錐齒(chi)加工(gong)(gong)和(he)熱處理工(gong)(gong)藝環節，由于該零(ling)件(jian) 屬(shu)于試制(zhi)階段，為降低加工(gong)(gong)成本，我們決定在(zai)(zai)臥式銑(xian)床(chuang)上采(cai)用(yong)成形齒(chi)輪(lun)銑(xian)刀(dao)銑(xian)齒(chi)法加工(gong)(gong)該錐齒(chi)輪(lun)，并通過制(zhi)訂合理的(de)(de)熱處理工(gong)(gong)藝方法和(he)參數來保證該齒(chi)輪(lun)的(de)(de)加工(gong)(gong)質量。