基于尺寸工程技术的降成本方法

徐庆增^1,2，张洋洋^1,2，徐俊义^1,2，傅晓磊^1,2

1.内燃机可靠性国家重点实验室，山东 潍坊  261061;

2.潍柴动力股份有限公司，山东 潍坊  261061

摘要：为降低发动机生产成本，提高产品竞争力，从产品设计、加工、装配等环节分析降低产品成本的方法，利用几何公差正向设计、精准设计、公差分析、公差分配、尺寸链计算等尺寸工程技术实现设计与工艺的平衡、精度与成本的平衡，并以某柴油机信号盘为例进行验证。结果表明：在保证满足信号盘功能要求的前提下，应用尺寸工程技术并对公差进行优化后，单件成本减低15元，该方法在降低成本和废品率等方面效果显著。

关键词：尺寸工程技术；降成本；几何公差；结构设计；加工工艺；测量检验

Cost reduction method based on dimensional engineering technology

XU Qingzeng^1,2, ZHANG Yangyang^1,2, XU Junyi^1,2, FU Xiaolei^1,2

1.State Key Laboratory of Engine Reliability, Weifang 261061, China;

2.Weichai Power Co., Ltd., Weifang 261061, China

Abstract: To reduce engine production costs and improve product competitiveness, methods for reducing product costs are analyzed from product design, processing, assembly, and other aspects. Dimensional engineering techniques such as geometric tolerance forward design, precision design, tolerance analysis, tolerance allocation, and dimension chain calculation are used to achieve a balance between design and process, accuracy and cost. A diesel engine signal panel is used as an example for verification. The results show that, while ensuring the functional requirements of the signal panel are met, the application of dimensional engineering technology and optimization of tolerances can reduce the cost of a single piece by 15 yuan. This method has significant effects in reducing costs and scrap rates.

Keywords: dimension engineering technology; cost reduction; geometric tolerancing; structure design; processing technology; measurement and inspection