壳面碾磨机的数字动态建模和拓扑优化设计

IF 4.6 2区 工程技术 Q2 ENGINEERING, MANUFACTURING
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引用次数: 0

摘要

本文介绍了用于铣削气缸盖的壳体端面铣刀的数字建模。使用有限元系统对铣刀的结构动力学及其模态形状进行了预测。刀体和刀片的几何形状是从计算机辅助设计(CAD)模型中导入的。刀片边缘被离散化为小段,以模拟其不同的法向斜角和倾角,这些都会影响切削力学。刀具与目标机床主轴之间的动态装配采用容纳耦合方法。建立了一个考虑到不同刀刃几何形状和刀片跳动的通用动态切削力模型,并用于预测切削力和颤振稳定性图。对所提出的模型进行了实验验证,以证明系统应用基于物理的数字设计和分析工具对特定零件进行大规模加工的可行性。通过拓扑优化,优化了刀体形状,增加了导致颤振的弯曲模式形状的刚度,使绝对稳定切削深度增加了五倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Digital dynamic modeling and topology optimized design of shell face mills
This paper presents digital modeling of shell face mills in milling cylinder heads. The cutter's structural dynamics and its mode shapes are predicted using a Finite Element system. The geometries of the cutter body and inserts are imported from their Computer Aided Design (CAD) models. The insert edge is discretized into small segments to model its varying normal rake and inclination angles, which affect the cutting mechanics. The cutter is dynamically assembled with the target machine tool spindle using the receptance coupling method. A general dynamic cutting force model, which considers the varying edge geometry and inserts’ run-outs, is developed and used to predict cutting forces and chatter stability diagrams. The proposed model is experimentally verified to demonstrate the feasibility of the systematic application of physics-based digital design and analysis of tools for the mass machining of specific parts. The cutter body shape is optimized to increase the stiffness of the bending mode shape that caused chatter via topology optimization, which led to five-fold increase in the absolute stable depth of cut.
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来源期刊
CIRP Journal of Manufacturing Science and Technology
CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering
CiteScore
9.10
自引率
6.20%
发文量
166
审稿时长
63 days
期刊介绍: The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.
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