動態(tài)人工熱電偶法
發(fā)布時間:2018-06-13 00:49
本文選題:動態(tài)人工熱電偶法 + 切削溫度測量 ; 參考:《上海交通大學(xué)學(xué)報》2017年04期
【摘要】:結(jié)合半人工熱電偶法和人工熱電偶法的特點,提出了一種新的測量切削溫度的方法——動態(tài)人工熱電偶法.該方法具有人工熱電偶法無需二次標(biāo)定、能夠測量絕緣體的切削溫度以及半人工熱電偶法能夠直接測量切削區(qū)切削溫度的特點.通過比較相同加工條件下新測量方法和半人工熱電偶法分別測量的鋁合金板銑削過程中切削區(qū)的溫度值,驗證了新方法的測量準(zhǔn)確性.試驗表明:動態(tài)人工熱電偶法與半人工熱電偶法的測量結(jié)果較為吻合.對于熱電勢,平均絕對誤差小于2.5%,標(biāo)準(zhǔn)差小于0.9mV;對于溫度值,平均絕對誤差小于3%,標(biāo)準(zhǔn)差小于14℃.此外,利用動態(tài)人工熱電偶法測量了環(huán)氧樹脂切削區(qū)的溫度變化情況,證明該方法能夠有效測量絕緣體切削區(qū)的切削溫度.
[Abstract]:Based on the characteristics of semi-artificial thermocouple method and artificial thermocouple method, a new method of measuring cutting temperature, dynamic artificial thermocouple method, is proposed. The method can measure the cutting temperature of the insulator and the cutting temperature of the cutting zone directly by the method of artificial thermocouple without secondary calibration. The accuracy of the new method is verified by comparing the temperature values of the cutting region in the milling process of aluminum alloy plate with the new measurement method and semi-artificial thermocouple method under the same processing conditions. The experimental results show that the dynamic artificial thermocouple method is in good agreement with the semi-artificial thermocouple method. For thermoelectric potential, the average absolute error is less than 2.5 and the standard deviation is less than 0.9 MV, for temperature, the average absolute error is less than 3 and the standard deviation is less than 14 鈩,
本文編號:2011854
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