具體參數

混凝土拖泵支(zhi)重輪部(bu)件上有一配對(dui)錐(zhui)齒(chi)輪，其中一個錐(zhui)齒(chi)輪結(jie)構如圖1，材料為(wei)(wei)20CrMnTi，該齒(chi) 輪的主要(yao)技(ji)術參數為(wei)(wei)：大端(duan)端(duan)面模(mo)數為(wei)(wei)4、齒(chi)數20、齒(chi)形(xing)角為(wei)(wei)20°、切向變(bian)位系數為(wei)(wei)0、徑(jing)向變(bian)位系數 為(wei)(wei)-0.27、大端(duan)齒(chi)高(gao)0.8mm、精度(du)等級為(wei)(wei)8CB GB11365。由于齒(chi)面硬度(du)要(yao)求為(wei)(wei)HRC56~64，因此，齒(chi)輪需要(yao)進行滲(shen)碳淬(cui)火處理，滲(shen)層(ceng)深度(du)要(yao)求為(wei)(wei)0.8-1.2mm。

從技術要求(qiu)和(he)精(jing)度(du)等級(ji)來看，該齒(chi)輪的加(jia)工(gong)(gong)(gong)精(jing)度(du) 等級(ji)要求(qiu)不高，要確保該零(ling)件的加(jia)工(gong)(gong)(gong)質(zhi)量，關鍵(jian)在于解決好錐齒(chi)加(jia)工(gong)(gong)(gong)和(he)熱處(chu)理工(gong)(gong)(gong)藝環節，由(you)于該零(ling)件 屬于試制階(jie)段，為降低(di)加(jia)工(gong)(gong)(gong)成本，我們決定在臥(wo)式(shi)銑(xian)床上(shang)采用成形齒(chi)輪銑(xian)刀銑(xian)齒(chi)法加(jia)工(gong)(gong)(gong)該錐齒(chi)輪，并通過制訂合(he)理的熱處(chu)理工(gong)(gong)(gong)藝方法和(he)參數來保證該齒(chi)輪的加(jia)工(gong)(gong)(gong)質(zhi)量。