Surface structuring using multi-stage grinding strategies based on geometric physically-based process simulations

Surface structuring using multi-stage grinding strategies based on geometric physically-based process simulations
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使用基于几何物理过程模拟的多级磨削策略进行表面结构化

DOI:
10.1016/j.promfg.2019.02.095
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发表时间:
2019
期刊:
Procedia Manufacturing
影响因子:
--
通讯作者:
D. Biermann
D. Biermann
中科院分区:
--
文献类型:
--
作者:
T. Siebrecht;N. Potthoff;P. Wiederkehr;D. Biermann

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对于各种工业应用,例如汽车行业成型工具的制造,功能区域的表面结构起着决定性作用。加工中心上的数控磨削工艺是精加工成型工具自由曲面的灵活解决方案。然而,表面形貌受到晶粒分布和工具磨损等多种因素的影响。在本文中,应用基于几何物理的模拟系统来预测不同多级磨削策略的表面结构。点云用于对单个颗粒进行建模,从而可以模拟不同的刀具磨损状态以及由此产生的对表面形貌和加工力的影响。由于磨削工具上的颗粒数量较多,因此根据代表性测量结果创建了颗粒分布的随机模型和不同颗粒形状的数据库。将模拟表面与实验结果进行比较,以验证该方法。
For various industrial applications, e.g., the manufacturing of forming tools for the automotive sector, surface structures of functional areas play a decisive role. NC grinding processes on machining centers represent a flexible solution for finishing the free-form surfaces of forming tools. However, the surface topographies are influenced by several factors like the distribution of the grains and the wear of the tools. In this paper, a geometric physically-based simulation system is applied to predict the surface structures for different multi-stage grinding strategies. Point clouds were used for modeling the individual grains, which allows the simulation of different states of tool wear and the resulting influence on the surface topographies and process forces. Due to the high number of grains on the grinding tools, a stochastic model for the grain distributions and a database of different grain shapes were created based on representative measurements. The simulated surfaces are compared to experimental results in order to validate this approach.
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