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

热诱发位移仍然是机床领域的主要问题之一。为了补偿位移，在本研究项目的背景下开发了简化的有限元模拟模型。利用这些模型，将来可以通过数控机床控制在线进行补偿计算（软件在回路中）。在第一个资助期内，对机器部件进行了广泛的实验测试，以适应有限元模拟。然后将这些测试与仿真模型进行比较，建立准确的预测模型，降低了预测模型的复杂性。在项目的第三年，首先对简单结构（轴承，导轨和滚珠丝杠）确定的参数的适用性和可扩展性进行了验证，并对复杂结构（进给传动单元）进行了验证。为了完成研究项目，计划起草一份建议目录，根据本研究项目中获得的信息，总结创建热模拟的基本步骤。这将按照VDI 3633 ff进行。由于热有限元模拟按照今天的艺术状态是非常昂贵的，这样的目录可能有助于增加时间的支出，经济效率，因此也接受这种发展方法在实践中。还期望通过这种方式通过对机器的控制在线模拟复杂的机器结构成为可能。

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.