Reduction of Thermal FEM Simulation Models for Online Applications on Machine Tools - SimTherm

减少机床在线应用的热 FEM 仿真模型 - SimTherm

• 批准号: 157640986
• 负责人: Professor Dr.-Ing. Uwe Heisel
• 金额: --
• 依托单位: Institut für Werkzeugmaschinen (IFW)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/157640986?language=en
• 关键词: Reduction; Thermal; FEM; Simulation; Models

Thermally induced displacements continue to represent one of the main problem areas in the machine tool sector. To compensate displacements, simplified FE simulation models are developed within the context of this research project. It will be possible with these models to carry out compensating calculations online through the NC machine control in future (software in the loop). In the first funding period extensive experimental tests were conducted on machine components for the adaptation of the FE simulations. Then these tests were compared with simulation models to create exact prediction models, which are reduced in their complexity though.In the third year of the project the applicability and the scalability of the parameters, which were determined of simple structures (bearings, guide carriages and ball screws) at first, are examined on complex structures (feed drive unit). For the completion of the research project it is planned to draw up a catalogue of recommendations, summarising the basic steps for creating a thermal simulation in accordance with the information gained in this research project. This will be carried out following VDI 3633 ff. As thermal FEM simulations in accordance with today's state of the art are very costly, such a catalogue may help to increase the expenditure of time, economic efficiency and hence also the acceptance of this development method in practice. It is also expected that it will become possible in this way to simulate complex machine structures online via the control of the machine.

热致位移仍然是机床领域的主要问题之一。为了补偿位移，在本研究项目的范围内开发了简化的有限元仿真模型。这些模型将来可以通过数控机床控制（软件在环）在线进行补偿计算。在第一个资助期内，对机器部件进行了广泛的实验测试，以适应FE模拟。然后将这些测试与模拟模型进行比较，以创建精确的预测模型，尽管其复杂性有所降低。在项目的第三年，首先在简单结构（轴承，导轨和滚珠丝杠）上确定的参数的适用性和可扩展性在复杂结构（进给驱动单元）上进行了检查。为了完成研究项目，计划起草一份建议目录，总结根据本研究项目中获得的信息创建热模拟的基本步骤。这将按照第3633 ff号文件进行。由于根据当今技术状态的热FEM模拟非常昂贵，因此这样的目录可以帮助增加时间的花费、经济效率以及因此在实践中对这种开发方法的接受。还可以预期，通过这种方式，通过机器的控制在线模拟复杂的机器结构将成为可能。