The convex curvilinear revolving workpieces with higher accuracy and better surface quality are applied extensively in the area of aerospace as well as others. The traditional locus method for grinding can not meet the demands of highly efficient precision process due to low accuracy and efficiency. A new linear envelop method to process convex curvilinear revolving workpiece and its implementation were introduced. Based on the analysis on the forming mechanism,a computational model of cc points suitable for this forming method and keeping the same scallop height was proposed. Compared the efficiencies of linear envelop method and locus method under the same scallop height,it can be concluded that the processing efficiency of linear envelop method is about four times higher than that of locus method when the radius of curvature on contour lines outside the workpiece is comparatively large.%凸曲线回转工件广泛应用于航空航天等领域,它要求较高的精度和表面质量.传统的轨迹磨削成形方法不仅精度不高,而且效率较低,无法满足高效精密加工的需求.介绍了加工凸曲线回转工件的直线包络方法和其实现方式.在分析其成形机理的基础上提出了适合这种成形方法的基于等残留高度的刀触点计算模型,并在达到相同最大残留高度条件下,对直线包络方法和轨迹成形方法进行了效率比较,得出当工件截面凸曲线曲率半径较大时,直线包络方法的加工效率要比轨迹成形方法提高3～4倍左右.
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