Distortion containment during grinding by computer-assisted identification of compensation-strategies

通过计算机辅助识别补偿策略控制磨削过程中的变形

• 批准号: 402705371
• 负责人: Professor Dr.-Ing. Carsten Heinzel
• 金额: --
• 依托单位: Lehrstuhl für Betriebswissenschaften und Montagetechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/402705371?language=en
• 关键词: Distortion; containment; during; grinding; computer

Due to the removal of material layers with residual stresses and the induction of residual stresses by high thermal and mechanical loads during the grinding process bending potentials are generated in the surface layer. These bending potentials may lead to shape and dimensional changes. To assure the required quality, with regard to shape and dimension, especially of thin-walled workpieces, which react very sensitive on changes of the bending potential, straightening process are needed. Using controlled straightening processes the implementation of defined compensation potentials is possible. Currently experience-based and manually carried out straightening-processes are primarily still in use in industrial practice. The models and simulations for the prediction of shape and dimension-accuracy in grind-hardening-processes, which the applicants developed and validated together, include the potential to be transferred to the conventional grinding processes. In the proposed research project controlled compensation-strategies will be simulated and experimentally validated. By high thermal influences during the grinding process, reproducible and significant shape changes of thin workpieces can be achieved. Furthermore the effect of controlled thermal and mechanical straightening-processes and their compensation-potential can be understood purposefully. Using the developed simulation the combination of different straightening-processes and -strategies will be designed and finally implemented in the experimental environment.

由于去除了具有残余应力的材料层以及在磨削过程期间由高热和机械负荷引起的残余应力，在表面层中产生弯曲电位。这些弯曲电位可能导致形状和尺寸的变化。为了确保所需的质量，关于形状和尺寸，特别是薄壁工件，其对弯曲电位的变化非常敏感，需要矫直过程。使用受控的矫直过程，可以实现定义的补偿电位。目前，基于经验和手动进行的矫直工艺主要仍在工业实践中使用。申请人共同开发和验证的用于预测磨削硬化过程中的形状和尺寸精度的模型和模拟包括被转移到传统磨削过程的潜力。在拟议的研究项目控制补偿策略将进行模拟和实验验证。通过磨削过程中的高热影响，可以实现薄工件的可再现和显著的形状变化。此外，可以有目的地理解受控的热矫直和机械矫直过程的效果及其补偿潜力。使用开发的模拟不同的矫直过程和策略的组合将被设计，并最终在实验环境中实施。