具體參數

混(hun)凝土拖泵支(zhi)重(zhong)輪部(bu)件上有一配(pei)對錐齒(chi)(chi)(chi)輪，其(qi)中一個錐齒(chi)(chi)(chi)輪結構(gou)如圖(tu)1，材料為(wei)(wei)20CrMnTi，該齒(chi)(chi)(chi) 輪的主要(yao)技術(shu)參數(shu)為(wei)(wei)：大(da)端端面(mian)模數(shu)為(wei)(wei)4、齒(chi)(chi)(chi)數(shu)20、齒(chi)(chi)(chi)形角(jiao)為(wei)(wei)20°、切向變位系數(shu)為(wei)(wei)0、徑向變位系數(shu) 為(wei)(wei)-0.27、大(da)端齒(chi)(chi)(chi)高0.8mm、精度等級為(wei)(wei)8CB GB11365。由于齒(chi)(chi)(chi)面(mian)硬(ying)度要(yao)求(qiu)為(wei)(wei)HRC56~64，因此，齒(chi)(chi)(chi)輪需要(yao)進行滲(shen)碳淬火處理，滲(shen)層(ceng)深度要(yao)求(qiu)為(wei)(wei)0.8-1.2mm。

從技(ji)術要求(qiu)和精(jing)度等(deng)級(ji)來看，該齒(chi)(chi)輪的加(jia)(jia)(jia)工(gong)(gong)精(jing)度 等(deng)級(ji)要求(qiu)不高，要確(que)保該零件的加(jia)(jia)(jia)工(gong)(gong)質量(liang)，關鍵(jian)在(zai)(zai)于(yu)解決(jue)(jue)好錐(zhui)齒(chi)(chi)加(jia)(jia)(jia)工(gong)(gong)和熱處(chu)理工(gong)(gong)藝環節，由于(yu)該零件 屬于(yu)試制(zhi)(zhi)階段，為降低加(jia)(jia)(jia)工(gong)(gong)成本，我們決(jue)(jue)定在(zai)(zai)臥(wo)式銑(xian)床上采用(yong)成形齒(chi)(chi)輪銑(xian)刀銑(xian)齒(chi)(chi)法(fa)加(jia)(jia)(jia)工(gong)(gong)該錐(zhui)齒(chi)(chi)輪，并通過制(zhi)(zhi)訂(ding)合理的熱處(chu)理工(gong)(gong)藝方法(fa)和參(can)數來保證該齒(chi)(chi)輪的加(jia)(jia)(jia)工(gong)(gong)質量(liang)。