﻿ 用于公差设计的加权公差–成本模型研究

# 用于公差设计的加权公差–成本模型研究Study on Weighted Tolerance-Cost Model for Tolerance Allocation

Abstract: To establish a precise and unifying tolerance-cost model, the method of introducing weighted coefficient was proposed. Tolerance-cost curve was divided into three parts according to the curve’s feature. Weighted tolerance-cost model was established based on Exponential model, Reciprocal powers model and Cubic polynomial after analyzing the trend of every part, respectively. The proposed method was verified with experimental data, and the result indicated that: Weighted tolerance-cost model is more precise than other models with error reduction by 80%. The proposed method is applied to other frequently-used processing mode, and is easy to program.

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