Continuous Generating Cutting Tool Grinding 2

连续生成切削刀具磨削2

• 批准号: 355458859
• 负责人: Professor Dr.-Ing. Berend Denkena
• 金额: --
• 依托单位: Institut für Fertigungstechnik und Werkzeugmaschinen (IFW)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/355458859?language=en
• 关键词: Continuous; Generating; Cutting; Tool; Grinding

Continuous generating gear grinding, profile grinding and gear honing rank among the most established operations for the hard machining of cylindrical gear toothings. The key feature of those gear wheels is the periodical arrangement of the teeth on the circumference with either parallel or inclined flanks regarding the rotation axis of the gear. This allows the hard machining of the gears using worm- and gear shaped grinding wheels in a process that follows the kinematics of a transmission. The regular arrangement of teeth can also be found in cutting tools, e.g. end mills, drills, reamers or side milling cutters. Those tools are usually produced using ordinary profiled grinding wheels such as cylindrical grinding wheels, profile grinding wheels and cup wheels with linear contours. The first part of this project has shown that the production of cutting tools using a continuous generating grinding process is possible. Especially the simultaneous machining of multiple cutting teeth and the utilization of grinding wheel shift strategies demonstrate the potential of this innovative tool grinding process. The simultaneous production of the rake and flank faces allows the reduction of necessary production steps and thus can reduce the manufacturing time. The utilization of shifting strategies, known from gear grinding, promise a higher accuracy of the workpiece geometry through a reduction of tool wear and offers the possibility to further increase the productivity of the cutting tool manufacturing process. However, the utilization of CBN-grinding wheels has to be investigated in order to maximize the performance of the newly developed process. Therefore, the main goal of this project is to investigate the process behavior of CBN tools during the continuous generating grinding of cutting tools.

在圆柱齿轮硬加工中，连续磨齿、磨齿和珩磨是最成熟的工序。这些齿轮的关键特点是周期性安排的齿的圆周与平行或倾斜的侧面关于齿轮的旋转轴。这允许硬加工的齿轮使用蜗杆和齿轮形砂轮在一个过程中，遵循传动的运动学。齿的规则排列也可以在切削工具中找到，例如立铣刀、钻头、铰刀或侧铣刀。这些工具通常使用普通的异形砂轮，如具有线性轮廓的外圆砂轮、异形砂轮和杯形砂轮。该项目的第一部分表明，使用连续生成磨削工艺生产刀具是可能的。特别是多个切削齿的同时加工和砂轮换挡策略的应用，展示了这种创新刀具磨削工艺的潜力。同时生产的耙面和侧面允许减少必要的生产步骤，从而可以减少制造时间。变速策略的利用，从齿轮磨削可知，通过减少刀具磨损，承诺更高的工件几何精度，并提供了进一步提高刀具制造过程生产率的可能性。然而，为了使新开发的工艺性能最大化，必须研究cbn砂轮的利用。因此，本项目的主要目标是研究CBN刀具在刀具连续生成磨削过程中的工艺行为。