Simulation of surface structuring considering the acceleration behaviour by means of spindle control
Simulation of surface structuring considering the acceleration behaviour by means of spindle control
复制标题
通过主轴控制考虑加速行为的表面结构仿真
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
D. Biermann
中科院分区：
文献类型：
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作者：
D. Freiburg;Felix Finkeldey;Michael Hensel;P. Wiederkehr;D. Biermann
由于对加工表面的表面质量要求不断提高，必须避免复杂的 5 轴铣削加工中由于加工中心的加速和减速行为不足而导致的进给速度偏差。这对于通过高进给铣削进行表面结构化的情况至关重要。高进给率可用于在成形工具上生成准确定性表面结构。将表面结构应用于成型工艺，可以定制摩擦力以改善小型腔的成型填充。然而，为了产生均匀的表面结构，重要的是确保铣削过程中每齿的恒定进给量。在这项工作中，展示了一种使用基于几何物理的模拟系统来预测表面结构的新方法。此外，还开发了一个经验模型，该模型代表所用加工中心的加速和减速行为，用于预测进给率的偏差。因此，在模拟铣削过程时可以考虑交替进给速率。此外，还采用在线调整主轴转速的控制方法来保持齿进给恒定。
Due to the increasing demands on surface quality of machined surfaces, deviations of the feed velocity, which can occur in complex 5-axis milling processes and are caused by the insufficient acceleration and deceleration behaviour of the machining centre, have to be avoided. This is crucial in the case of surface structuring by means of high-feed milling. The high-feed rate can be used to generate quasi-deterministic surface structures on forming tools. Applying surface structures for forming processes, the friction can be tailored to improve the form filling of small cavities. However, in order to generate homogeneous surface structures, it is important to ensure a constant feed per tooth during the milling process. In this work, a novel approach for the predicting surface structures using a geometric physically-based simulation system is shown. Furthermore, an empirical model was developed which represents the acceleration and deceleration behaviour of the used machining centre for predicting the deviations of the feed rate. Therefore, it is possible to take the alternating feed rate into account when simulating the milling process. In addition, a control approach, for adapting the spindle speed online, is used to keep the tooth feed constant.