基于倾角补偿的磨料水射流曲线切割技术研究
作者单位：山东大学
学位级别：硕士
导师姓名：黄传真
授予年度：2010年
学科分类：08[工学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
摘 要：The jet obliquity compensation approach for cutting plane curve and space curve with abrasive water jet （AWJ） has been researched. The kerf width, kerf taper and kerf lateral surface roughness of steel and aluminum alloy cut by AWJ have been studied. In order to improve the cutting efficiency and cutting quality, the jet obliquity compensation approach for cutting plane curve and space curve with AWJ and the concept of equivalent cutting parameters have been proposed. The relationships between equivalent cutting parameters in curve proceeding and nominal cutting parameters in linear proceeding have been studied. The mathematical models of nozzle turning radius have been established based on the transverse obliquity and kerf inner-outer radius compensation, and is verified by cutting plane ellipse. The effect of jet pressure, nozzle traverse speed, standoff distance and abrasive flow rate on kerf width and kerf taper has been researched. The range analysis and variance analysis have been made on experiment results, and the regression formulas of kerf width and kerf taper have been established by regression analysis. The kerf width and kerf taper when cutting steel Q235 and aluminum alloy 5052 by AWJ have been studied. It is shown that the standoff distance is the most important impact factor to the kerf width and kerf taper and the kerf width increases with an increment in standoff distance, and the effect of jet pressure, nozzle traverse speed and abrasive flow rate is almost the same. The kerf width cut by abrasiver 100# is wider than that by abrasiver 80#. The kerf width of aluminum alloy 5052 is wider than that of steel Q235 at the condition of same size abrasive. The jet capability for cutting aluminum alloy is stronger than that for steel at the condition of the same abrasive flow rate. The kerf taper decreases with a reduction in standoff distance and the kerf taper cut by abrasiver 100# is greater than that by abrasiver 80# at the same cutting conditions
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