具體參數

混凝土拖泵支重輪部件上有一(yi)配對錐齒輪，其中一(yi)個錐齒輪結(jie)構如圖1，材料為(wei)(wei)(wei)20CrMnTi，該齒 輪的主要(yao)技術(shu)參數(shu)(shu)為(wei)(wei)(wei)：大端(duan)(duan)端(duan)(duan)面(mian)模數(shu)(shu)為(wei)(wei)(wei)4、齒數(shu)(shu)20、齒形(xing)角為(wei)(wei)(wei)20°、切向變位系數(shu)(shu)為(wei)(wei)(wei)0、徑向變位系數(shu)(shu) 為(wei)(wei)(wei)-0.27、大端(duan)(duan)齒高0.8mm、精度等級為(wei)(wei)(wei)8CB GB11365。由于(yu)齒面(mian)硬度要(yao)求為(wei)(wei)(wei)HRC56~64，因此(ci)，齒輪需要(yao)進行滲(shen)碳淬火處(chu)理，滲(shen)層深(shen)度要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從(cong)技(ji)術要求和精度(du)等(deng)(deng)級來(lai)看，該齒輪的加(jia)(jia)工(gong)(gong)(gong)精度(du) 等(deng)(deng)級要求不高，要確保(bao)該零(ling)件的加(jia)(jia)工(gong)(gong)(gong)質量(liang)(liang)，關鍵在于解決好(hao)錐(zhui)齒加(jia)(jia)工(gong)(gong)(gong)和熱處理(li)工(gong)(gong)(gong)藝環節，由于該零(ling)件 屬于試(shi)制階段(duan)，為降(jiang)低加(jia)(jia)工(gong)(gong)(gong)成(cheng)本，我們決定在臥式銑(xian)(xian)床上采用成(cheng)形齒輪銑(xian)(xian)刀銑(xian)(xian)齒法加(jia)(jia)工(gong)(gong)(gong)該錐(zhui)齒輪，并通過制訂合理(li)的熱處理(li)工(gong)(gong)(gong)藝方法和參數來(lai)保(bao)證該齒輪的加(jia)(jia)工(gong)(gong)(gong)質量(liang)(liang)。