Modelling of broaching processes by multi scale discretisation

通过多尺度离散化拉削过程建模

• 批准号: 315474003
• 负责人: Professor Dr.-Ing. Fritz Klocke
• 金额: --
• 依托单位: Werkzeugmaschinenlabor - WZL
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/315474003?language=en
• 关键词: Modelling; broaching; processes; multi; scale

In broaching, the technological process parameters are directly ground in the tool and therefore have to be defined in the design stage. Decisions about the tooth pitch, the rise per tooth and the tooth macro- and microgeometry have to be made according to the tool and workpiece material combination. These design parameters significantly influence the productivity, chip formation, tool wear and the cutting forces and experimental optimizations are very expensive. On this account, broaches are mostly designed fail-safe, even if the design is not optimal according to the thermal mechanical tool load, machine tool and workpiece requirements. The goal of this project is the development of a multiscale model to simulate the broaching process. The approach is supposed to show and calculate relevant interactions between process, tool and machine tool. Therefore, the broach and the process can be designed efficiently in terms of tool load, productivity and manufacturing costs. The model consists of several submodels to discretize the broaching process in different spatial and temporal scales. This makes it possible to combine the precision of a mesoscale chip formation model with a macroscopic process and machine model.

在拉削过程中，工艺参数直接在刀具中确定，因此必须在设计阶段确定。必须根据刀具和工件的材料组合来决定齿距、每齿升程以及齿的宏观和微观几何形状。这些设计参数显著影响生产率、切屑形成、刀具磨损和切削力，而实验优化成本非常高。因此，拉刀大多被设计为故障安全的，即使根据热机械工具负载，机床和工件要求的设计不是最优的。这个项目的目标是开发一个多尺度模型来模拟拉削过程。该方法旨在显示和计算过程、工具和机床之间的相关相互作用。因此，拉刀和工艺可以在刀具负荷、生产率和制造成本方面进行有效的设计。该模型由多个子模型组成，将拉削过程在不同的时空尺度上离散化。这使得将中尺度切屑形成模型的精度与宏观过程和机器模型相结合成为可能。

项目成果

Model-based analysis in finish broaching of inconel 718

• DOI: 10.1007/s00170-018-2221-5
• 发表时间: 2018-05
• 期刊: The International Journal of Advanced Manufacturing Technology
• 作者: Martin Seimann;B. Peng;A. Fischersworring-Bunk;S. Rauch;F. Klocke;Benjamin Döbbeler

Tool-based inverse determination of material model of Direct Aged Alloy 718 for FEM cutting simulation

基于工具的直接时效合金 718 材料模型的反确定，用于 FEM 切削模拟

• DOI: 10.1016/j.procir.2018.08.211
• 发表时间: 2018
• 期刊: Procedia CIRP
• 作者: Klocke;Döbbeler;Schneider;S.A.M.
• 通讯作者: S.A.M.

A Coupling Approach Combining Computational Fluid Dynamics and Finite Element Method to Predict Cutting Fluid Effects on the Tool Temperature in Cutting Processes

计算流体动力学与有限元方法相结合的耦合方法来预测切削液对切削过程中刀具温度的影响

• DOI: 10.1115/1.4044102
• 发表时间: 2019
• 期刊: Journal of Manufacturing Science and Engineering
• 作者: Helmig;Ehrenpreis;Augspurger;Frekers
• 通讯作者: Frekers

Development and validation of a new friction model for cutting processes

• DOI: 10.1007/s00170-019-04709-8
• 发表时间: 2020-01-25
• 期刊: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
• 影响因子: 3.4
• 作者: Peng, Bingxiao;Bergs, Thomas;Klocke, Fritz
• 通讯作者: Klocke, Fritz

A Novel Approach to Determine the Cutting Temperature Under Consideration of the Tool Wear

考虑刀具磨损的确定切削温度的新方法

• DOI: 10.1115/msec2020-8408
• 发表时间: 2020
• 作者: Schraknepper;Augspurger
• 通讯作者: Augspurger