基于轴心轨迹特征的发动机曲轴再制造性分析方法

摘要/Abstract

摘要： 运用主动再制造理论对再制造毛坯质量的不确定性进行了分析研究，提出了一种基于轴心轨迹特征的发动机曲轴再制造性分析方法。该方法通过运用不变矩算法提取同一发动机曲轴不同磨损状态下轴心轨迹的特征量，建立特征量与磨损量之间的映射关系，来判断发动机零部件的再制造性，从而实现对任意状态下曲轴磨损的量化。试验结果表明，运用该方法对曲轴磨损量进行识别具有较高的精度，为寻求曲轴服役期内最佳再制造时机提供了较为准确的判别依据，同时为服役期内伴随产品失效的同批次再制造毛坯质量的不确定性控制等问题提供了解决方案。

关键词: 主动再制造, 不确定性, 轴心轨迹, 曲轴磨损

Abstract: The uncertainty of the remanufacturing blank qualities was analyzed by the theory of predecisional remanufacturing. A remanufacturability analysis method was presented based on shaft center trajectory. This method extracted the characteristic parameters of the shaft center trajectory of the same engine crankshaft under different wear conditions by using the moment invariant algorithm. The mapping relationship among the characteristic quantity and wear quantity was established to determine the remanufacturability of the engine parts so that the quantification of crankshaft wear under any conditions might be realized. The test results show that the method has high precision for identifying the wear of the crankshafts. It provides a more accurate criterion to find the optimal remanufacturing time in the service period of the crankshaft. At the same time, it provides a solution to the uncertain control problems of remanufacturing blank qualities in the service period with the same batch product failures.

Key words: predecisional remanufacturing, uncertainty, shaft center trajectory, crankshaft wear

中图分类号:

TH122

王玉琳;胡锦强;柯庆镝;宋守许. 基于轴心轨迹特征的发动机曲轴再制造性分析方法[J]. 中国机械工程.

WANG Yulin;HU Jinqiang;KE Qingdi;SONG Shouxu. Remanufacturability Analysis Method for Engine Crankshafts Based on Shaft Center Trajectory[J]. China Mechanical Engineering.

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