具體參數

混凝土拖(tuo)泵支重輪部件(jian)上有(you)一配(pei)對錐齒(chi)(chi)輪，其中一個錐齒(chi)(chi)輪結構如圖1，材(cai)料為(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi)(chi) 輪的主(zhu)要(yao)技術參數為(wei)(wei)(wei)：大端(duan)端(duan)面模數為(wei)(wei)(wei)4、齒(chi)(chi)數20、齒(chi)(chi)形角為(wei)(wei)(wei)20°、切(qie)向變位系數為(wei)(wei)(wei)0、徑向變位系數 為(wei)(wei)(wei)-0.27、大端(duan)齒(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由于齒(chi)(chi)面硬度(du)要(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)輪需要(yao)進行(xing)滲碳淬火處理，滲層深度(du)要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從技術要求和(he)精度等級來(lai)看(kan)，該(gai)(gai)齒輪的加工(gong)(gong)精度 等級要求不(bu)高，要確(que)保該(gai)(gai)零(ling)件的加工(gong)(gong)質量，關(guan)鍵在于(yu)(yu)解決(jue)好錐(zhui)(zhui)齒加工(gong)(gong)和(he)熱處理(li)工(gong)(gong)藝環(huan)節，由(you)于(yu)(yu)該(gai)(gai)零(ling)件 屬于(yu)(yu)試(shi)制(zhi)階段，為降低(di)加工(gong)(gong)成(cheng)本，我們決(jue)定在臥式銑(xian)床上(shang)采用(yong)成(cheng)形齒輪銑(xian)刀銑(xian)齒法加工(gong)(gong)該(gai)(gai)錐(zhui)(zhui)齒輪，并(bing)通(tong)過制(zhi)訂(ding)合理(li)的熱處理(li)工(gong)(gong)藝方法和(he)參(can)數(shu)來(lai)保證(zheng)該(gai)(gai)齒輪的加工(gong)(gong)質量。