船用柴油机机体大尺寸主轴承孔镗孔过程中的变形研究

IF 2.1 4区 工程技术 Advances in Mechanical Engineering Pub Date : 2024-04-29 DOI:10.1177/16878132241241466
Dongyue Qu, Jiyuan Han, Yong Zhan, Hongyi Zhang, Jian’an Xu
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引用次数: 0

摘要

薄壁部件中的加工诱导残余应力(MIRS)会影响其加工精度,尤其是大尺寸薄壁部件。本研究以船用柴油机机体为研究对象,探讨了主轴承孔镗孔过程中的 MIRS 分布和重力耦合加工残余应力引起的变形。研究基于有限元法和映射法获得了 MIRS 和加工变形的分布。研究还探讨了切削速度、进给量和切削深度等各种参数对 MIRS 和加工变形的影响规律。研究表明,切削速度、进给量和切削深度是影响 MIRS 和加工变形的重要因素。对于大尺寸薄壁零件的加工变形而言,其自重是一个不可忽视的重要因素。通过优化壁厚,可以有效控制变形范围,为结构的轻量化设计提供支持。
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Research on distortion in boring process of large-size main bearing holes in marine diesel engine body
Machining-induced residual stress (MIRS) in thin-walled components affects their machining accuracy, especially for large-size thin-walled components. This study focuses on the bodies of marine diesel engines, exploring the distribution of MIRS and distortion caused by the gravity-coupled machining residual stress during the boring process of the main bearing hole. The research obtained the distribution of MIRS and the machining distortion based on the finite element method and the mapping method. It examined the influence rules of various parameters, such as the cutting speed, feed, and depth of cut, on MIRS and machining distortion. The study shows that cutting speed, feed, and depth of cut are vital factors affecting MIRS and machining distortion. For the machining distortion of large-size and thin-walled components, their own weight is an essential factor that cannot be ignored. By optimizing the wall thickness, the distortion range can be effectively controlled, supporting the lightweight design of the structure.
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来源期刊
Advances in Mechanical Engineering
Advances in Mechanical Engineering Engineering-Mechanical Engineering
自引率
4.80%
发文量
353
期刊介绍: Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering
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