合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2014年
3期
257-261,322
,共6页
孙海明%刘志峰%周丹%詹一飞
孫海明%劉誌峰%週丹%詹一飛
손해명%류지봉%주단%첨일비
电主轴%精度寿命%疲劳寿命%影响因素%GM (1 ,1)模型
電主軸%精度壽命%疲勞壽命%影響因素%GM (1 ,1)模型
전주축%정도수명%피로수명%영향인소%GM (1 ,1)모형
motorized spindle%precision lifetime%fatigue lifetime%influencing factor%GM (1,1) model
文章依据缸盖生产线31台进口电主轴寿命统计数据,得出了电主轴的平均切削加工寿命为8277 h ,从而验证了8000 h的平均精度寿命;分析和总结了电主轴在服役初期、精度寿命期和疲劳寿命期影响其寿命的主要因素分别为原发性制造缺陷、服役工况超过设计许用条件和电主轴自身结构特点;依据灰色理论的GM (1,1)模型建立了电主轴的精度寿命预测模型,由实际观测值得到直接和间接验证,并依据疲劳寿命预测模型对超过40000 h仍在服役的电主轴进行了疲劳寿命预测。
文章依據缸蓋生產線31檯進口電主軸壽命統計數據,得齣瞭電主軸的平均切削加工壽命為8277 h ,從而驗證瞭8000 h的平均精度壽命;分析和總結瞭電主軸在服役初期、精度壽命期和疲勞壽命期影響其壽命的主要因素分彆為原髮性製造缺陷、服役工況超過設計許用條件和電主軸自身結構特點;依據灰色理論的GM (1,1)模型建立瞭電主軸的精度壽命預測模型,由實際觀測值得到直接和間接驗證,併依據疲勞壽命預測模型對超過40000 h仍在服役的電主軸進行瞭疲勞壽命預測。
문장의거항개생산선31태진구전주축수명통계수거,득출료전주축적평균절삭가공수명위8277 h ,종이험증료8000 h적평균정도수명;분석화총결료전주축재복역초기、정도수명기화피로수명기영향기수명적주요인소분별위원발성제조결함、복역공황초과설계허용조건화전주축자신결구특점;의거회색이론적GM (1,1)모형건립료전주축적정도수명예측모형,유실제관측치득도직접화간접험증,병의거피로수명예측모형대초과40000 h잉재복역적전주축진행료피로수명예측。
The average cut lifetime of 8 277 h was received according to lifetime statistical data of 31 im-ported motorized spindles in cylinder head production line , and the average precision lifetime of 8 000 hwas validated .The main influencing factors of lifetime in initial stage ,precision lifetime and fa-tigue lifetime were respectively the original manufacturing defect ,the fact that service conditions ex-ceed design allowable conditions and own unique structural characteristics of motorized spindle .The precision lifetime prediction model of motorized spindle was built according to GM (1 ,1) model of grey theory and validated by practical observation data obtained directly and indirectly ,and the fatigue life-time of motorized spindle of which working time exceeds 40 000 h was forecasted by fatigue lifetime prediction model .