湖南大学学报（自然科学版）2016，Vol.43Issue(4)：17-23,7.
孔轴配合的精度预测与公差优化设计∗
The Forecast of Hole Shaft Fit Accuracy and Tolerance Optimization Design
摘要
Abstract
Taking cylindrical hole shaft j oint surface as the research obj ect,the actual error model of hole shaft j oint surface with coupled tolerance was studied based on the new generation of GPS standard system.Taking cylindricity for instance,combining with the cylindrical form error evaluation method in the GPS standard,the external associated size actual change interval solving model of the cylindrical hole shaft surface was established,and the effect of actual error on fitting property was analyzed by using Monte Carlo method to simulate the random error.The formation mechanism of hole shaft j oint surface er-ror under the coupling effect of three kinds of tolerance,including direction tolerance and position toler-ance,was analyzed,the actual error models of cylindrical hole shaft j oint surface under different fitting properties were established,and the actual change interval of each error component of the j oint surface and actual fitting property were obtained.Hole shaft actual assembly accuracy prediction in the design phase was achieved by taking the tolerance optimization design of the hole and shaft parts with the actual hole shaft j oint surface accuracy and fitting property requirements as the constraints,and hole shaft processingcost as the obj ective.Finally,the feasibility and practicability of this method were verified with an example of hole shaft assembly accuracy analysis and tolerance optimization.关键词
蒙特卡洛模拟法/结合面误差/装配精度预测/配合性质/公差优化设计Key words
Monte Carlo simulation/j oint surface error/assembly accuracy prediction/fitting property/tolerance optimization design分类
机械制造引用本文复制引用
吕程,易广威,刘子建..孔轴配合的精度预测与公差优化设计∗[J].湖南大学学报（自然科学版）,2016,43(4):17-23,7.基金项目
国家自然科学基金资助项目(51175161,51475152),National Natural Science Foundation of China(51175161,51475152) （51175161,51475152）
