Development of tribological optimized guide pads for deep hole drilling processes

开发用于深孔钻削工艺的摩擦学优化导向块

• 批准号: 276395118
• 负责人: Professor Dr.-Ing. Dirk Biermann
• 金额: --
• 依托单位: Institut für Spanende Fertigung
• 依托单位国家: 德国
• 项目类别: Research Grants (Transfer Project)
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/276395118?language=en
• 关键词: Development; tribological; optimized; guide; pads

Within the actual transfer project the achieved results and the knowledge of the tribological optimization of guide pads for deep hole drills will be applied to alternative deep hole drilling processes. In the fundamental project a new process chain for the development of guide pads for the BTA deep hole drilling process has been realized. This process chain includes the application of a friction reducing ta-C-Coating as well as pre- and after-treatment of the uncoated and coated substrate. The conventional polishing process has been substituted by microfinishing. The latter effects a defined shape optimization of the axial lead-in-area when finishing the uncoated substrate. The finishing as an post-treatment is responsible for an effective removal of the droplets. The wear behavior of the modified guide pads is significantly better than the wear behavior of conventional pads. The optimization of the shape with respect to the finish process to adjust the guide pad geometry has been adequately studied, resulting in an optimized solution. In combination with the ta-C coating, a guide pad design has been invented which improves the tribological contact conditions between the guide pad and the bore wall. In the proposed project the findings will be extended to other drilling processes. Here, the shape optimization by microfinishing will be investigated with regard to the efficiency of the application of other coatings. Additionally, the use of a ta-C coating for the guide pads of gun drills will be analyzed. Based on the results of the fundamental project and the newly developed solutions, a final application of the modified drilling tools in industrial drilling processes will be carried out.

在实际转移项目中，已达到的结果以及对深孔钻头的指南的摩擦学优化的了解将应用于替代的深孔钻孔过程。在基本项目中，已经实现了一个新的工艺链，用于开发BTA深孔钻孔过程的指南。该工艺链包括施加摩擦，减少ta-c涂层以及未涂层和涂层的底物的预处理和后处理。传统的抛光过程已被小局部替代。后者效应在完成未涂层的基板时，轴向铅铅的定义形状优化。作为治疗后的饰面是有效去除液滴的原因。改装导板的磨损行为明显好于常规垫的磨损行为。已经对调整导垫几何形状的完成过程的形状进行了充分的优化，从而实现了优化的解决方案。结合TA-C涂层，已经发明了指导垫设计，该设计改善了导板和孔壁之间的摩擦学接触条件。在拟议的项目中，发现将扩展到其他钻井过程。在这里，将研究通过小局部的形状优化，以实现其他涂料的效率。此外，将分析将TA-C涂层用于枪钻的导板。根据基本项目和新开发的解决方案的结果，将在工业钻井过程中进行最终应用。