具體參數

混凝土拖泵支(zhi)重輪(lun)(lun)部件(jian)上有一配對(dui)錐(zhui)齒輪(lun)(lun)，其中一個錐(zhui)齒輪(lun)(lun)結構(gou)如圖(tu)1，材料(liao)為(wei)(wei)(wei)(wei)(wei)20CrMnTi，該齒 輪(lun)(lun)的主(zhu)要技術參數為(wei)(wei)(wei)(wei)(wei)：大(da)端端面(mian)模數為(wei)(wei)(wei)(wei)(wei)4、齒數20、齒形角為(wei)(wei)(wei)(wei)(wei)20°、切向變位(wei)系數為(wei)(wei)(wei)(wei)(wei)0、徑向變位(wei)系數 為(wei)(wei)(wei)(wei)(wei)-0.27、大(da)端齒高0.8mm、精度(du)等級為(wei)(wei)(wei)(wei)(wei)8CB GB11365。由于齒面(mian)硬度(du)要求為(wei)(wei)(wei)(wei)(wei)HRC56~64，因此，齒輪(lun)(lun)需要進(jin)行滲碳淬火處理(li)，滲層深(shen)度(du)要求為(wei)(wei)(wei)(wei)(wei)0.8-1.2mm。

從技術要求(qiu)和精度等級(ji)來看，該齒輪的加工(gong)(gong)精度 等級(ji)要求(qiu)不高，要確保該零(ling)件的加工(gong)(gong)質量，關鍵在于解決(jue)好錐(zhui)齒加工(gong)(gong)和熱處理(li)工(gong)(gong)藝(yi)環節，由于該零(ling)件 屬于試制(zhi)階段，為降低加工(gong)(gong)成本，我們決(jue)定在臥式銑(xian)(xian)床上采用(yong)成形齒輪銑(xian)(xian)刀(dao)銑(xian)(xian)齒法(fa)加工(gong)(gong)該錐(zhui)齒輪，并(bing)通過制(zhi)訂合理(li)的熱處理(li)工(gong)(gong)藝(yi)方法(fa)和參數來保證該齒輪的加工(gong)(gong)質量。