具體參數

混凝土拖泵支(zhi)重輪(lun)部件上有一(yi)配(pei)對錐(zhui)齒(chi)輪(lun)，其中一(yi)個錐(zhui)齒(chi)輪(lun)結構如圖1，材料為(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi) 輪(lun)的主要(yao)技(ji)術(shu)參數(shu)為(wei)(wei)(wei)：大端端面模數(shu)為(wei)(wei)(wei)4、齒(chi)數(shu)20、齒(chi)形角為(wei)(wei)(wei)20°、切向變位系數(shu)為(wei)(wei)(wei)0、徑向變位系數(shu) 為(wei)(wei)(wei)-0.27、大端齒(chi)高0.8mm、精度等級為(wei)(wei)(wei)8CB GB11365。由于(yu)齒(chi)面硬度要(yao)求(qiu)為(wei)(wei)(wei)HRC56~64，因此，齒(chi)輪(lun)需要(yao)進行(xing)滲碳淬火處理，滲層深度要(yao)求(qiu)為(wei)(wei)(wei)0.8-1.2mm。

從技術(shu)要(yao)求和(he)精度(du)(du)等級(ji)來看，該齒(chi)(chi)(chi)輪的加(jia)工(gong)(gong)精度(du)(du) 等級(ji)要(yao)求不高，要(yao)確保(bao)該零件的加(jia)工(gong)(gong)質量，關鍵在于(yu)解決(jue)好錐(zhui)齒(chi)(chi)(chi)加(jia)工(gong)(gong)和(he)熱(re)處理工(gong)(gong)藝環節，由于(yu)該零件 屬于(yu)試制階段，為降低(di)加(jia)工(gong)(gong)成本(ben)，我們(men)決(jue)定(ding)在臥式(shi)銑(xian)床上采(cai)用(yong)成形齒(chi)(chi)(chi)輪銑(xian)刀(dao)銑(xian)齒(chi)(chi)(chi)法加(jia)工(gong)(gong)該錐(zhui)齒(chi)(chi)(chi)輪，并通過制訂合理的熱(re)處理工(gong)(gong)藝方(fang)法和(he)參數來保(bao)證該齒(chi)(chi)(chi)輪的加(jia)工(gong)(gong)質量。