具體參數

混(hun)凝土(tu)拖泵支重輪部件上有一配對錐齒(chi)(chi)(chi)輪，其中一個錐齒(chi)(chi)(chi)輪結構如圖(tu)1，材料為(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi) 輪的(de)主要(yao)(yao)(yao)技術參數(shu)為(wei)(wei)：大(da)端端面(mian)模數(shu)為(wei)(wei)4、齒(chi)(chi)(chi)數(shu)20、齒(chi)(chi)(chi)形(xing)角為(wei)(wei)20°、切向(xiang)變位(wei)系數(shu)為(wei)(wei)0、徑向(xiang)變位(wei)系數(shu) 為(wei)(wei)-0.27、大(da)端齒(chi)(chi)(chi)高(gao)0.8mm、精度(du)(du)等級為(wei)(wei)8CB GB11365。由于齒(chi)(chi)(chi)面(mian)硬(ying)度(du)(du)要(yao)(yao)(yao)求為(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)輪需要(yao)(yao)(yao)進行滲碳淬火處理，滲層深度(du)(du)要(yao)(yao)(yao)求為(wei)(wei)0.8-1.2mm。

從技術要求和(he)(he)精度(du)等級(ji)(ji)來(lai)(lai)看，該齒(chi)輪的(de)加(jia)(jia)工(gong)(gong)精度(du) 等級(ji)(ji)要求不(bu)高，要確保該零件的(de)加(jia)(jia)工(gong)(gong)質(zhi)量，關鍵在于解(jie)決(jue)好錐齒(chi)加(jia)(jia)工(gong)(gong)和(he)(he)熱(re)處理工(gong)(gong)藝環節，由于該零件 屬于試制(zhi)階(jie)段，為降低加(jia)(jia)工(gong)(gong)成(cheng)本，我們決(jue)定在臥式(shi)銑床上采用(yong)成(cheng)形齒(chi)輪銑刀(dao)銑齒(chi)法(fa)加(jia)(jia)工(gong)(gong)該錐齒(chi)輪，并通過制(zhi)訂合(he)理的(de)熱(re)處理工(gong)(gong)藝方(fang)法(fa)和(he)(he)參數來(lai)(lai)保證該齒(chi)輪的(de)加(jia)(jia)工(gong)(gong)質(zhi)量。