具體參數

混(hun)凝土(tu)拖(tuo)泵支重輪部件上(shang)有一配(pei)對錐齒(chi)(chi)(chi)輪，其中(zhong)一個錐齒(chi)(chi)(chi)輪結構如圖1，材料(liao)為(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi)(chi)(chi) 輪的(de)主(zhu)要(yao)技術參數為(wei)(wei)(wei)：大端端面模數為(wei)(wei)(wei)4、齒(chi)(chi)(chi)數20、齒(chi)(chi)(chi)形角為(wei)(wei)(wei)20°、切向變位(wei)系數為(wei)(wei)(wei)0、徑向變位(wei)系數 為(wei)(wei)(wei)-0.27、大端齒(chi)(chi)(chi)高0.8mm、精度等(deng)級(ji)為(wei)(wei)(wei)8CB GB11365。由于(yu)齒(chi)(chi)(chi)面硬度要(yao)求為(wei)(wei)(wei)HRC56~64，因此(ci)，齒(chi)(chi)(chi)輪需要(yao)進行滲(shen)碳淬火處理，滲(shen)層深度要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從技術要求(qiu)和(he)精度等(deng)級(ji)來看(kan)，該(gai)齒(chi)(chi)輪的(de)(de)加(jia)工(gong)(gong)(gong)精度 等(deng)級(ji)要求(qiu)不高，要確保(bao)該(gai)零(ling)件的(de)(de)加(jia)工(gong)(gong)(gong)質(zhi)量，關鍵在于(yu)解決(jue)好錐齒(chi)(chi)加(jia)工(gong)(gong)(gong)和(he)熱(re)處理工(gong)(gong)(gong)藝環節，由于(yu)該(gai)零(ling)件 屬于(yu)試制(zhi)階段，為(wei)降低加(jia)工(gong)(gong)(gong)成本，我們(men)決(jue)定(ding)在臥(wo)式銑床上采用(yong)成形齒(chi)(chi)輪銑刀銑齒(chi)(chi)法(fa)加(jia)工(gong)(gong)(gong)該(gai)錐齒(chi)(chi)輪，并(bing)通過制(zhi)訂合理的(de)(de)熱(re)處理工(gong)(gong)(gong)藝方法(fa)和(he)參數來保(bao)證該(gai)齒(chi)(chi)輪的(de)(de)加(jia)工(gong)(gong)(gong)質(zhi)量。