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  • 郭进举,纪有君,李晓静,武喜刚,于学全,林凯歌,马玉军,谷丽娟.发动机设计过程中的公差选用[J].柴油机,2019,41(6):48-51.    [点击复制]
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发动机设计过程中的公差选用
郭进举,纪有君,李晓静,武喜刚,于学全,林凯歌,马玉军,谷丽娟
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中国石油集团济柴动力有限公司动力装备研究院,山东 济南 250306
摘要:阐述了发动机设计过程中公差选用原则,指出公差选用是否合理不仅影响整机性能和市场适应性,且对加工成本影响极大。以机体设计公差选用为例,对发动机设计过程中的公差选用与工艺系统各部分的关联性进行分析。建议:在保证整机性能的前提下,尽量选择较大的公差带;粗糙度尽量不选用Ra1.6以下;不片面追求形位公差的高精度,以达到降低制造成本的目的。
关键词:  发动机;公差;选用;成本
Proper Tolerance Setting in Engine Design
Guo Jinju,Ji Youjun,Li Xiaojing,Wu Xigang,Yu Xuequan,Lin Kaige,Ma Yujun,Gu Lijuan
CNPC Jichai Power Co., Ltd.,Shandong Jinan 250306
Abstract:The tolerance setting rule in the design of engines is expounded, and the rationality of tole-rance setting not only has an influence on the performance of the whole engine and market application, but may also has a big influence on the cost of manufacturing. Taking the engine block tolerance as an example, the relation between tolerance setting and processing system is analyzed. With the premise of ensuring the whole engine's performance, choosing the biggest allowable tolerance, keeping the roughness not less than Ra1.6 and not excessively pursuing high-precise form and location tolerance are suggested, which can reduce the cost of manufacturing.
Key words:  engine; tolerance; setting; cost