Continuous Generating Cutting Tool Grinding 2

连续展成磨齿、仿形磨齿和珩齿是圆柱齿轮硬齿面加工中最成熟的工序之一。这些齿轮的主要特点是齿在圆周上的周期性排列，其平行或倾斜的侧面围绕齿轮的旋转轴。这使得可以在遵循变速器运动学的过程中使用蜗杆和齿轮形状的砂轮对齿轮进行硬加工。齿的规则排列也可以在刀具中找到，例如立铣刀、钻头、铰刀或侧向铣刀。这些工具通常使用普通的异形砂轮生产，如具有直线轮廓的外圆砂轮、仿形砂轮和杯形砂轮。该项目的第一部分表明，使用连续展成磨削工艺生产刀具是可能的。特别是多个切齿的同时加工和砂轮换档策略的使用，展示了这一创新的刀具磨削工艺的潜力。前刀面和后刀面的同时生产减少了必要的生产步骤，从而缩短了制造时间。齿轮磨削中已知的变速策略的使用，通过减少刀具磨损保证了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，为了最大限度地提高新开发工艺的性能，必须研究CBN砂轮的利用。因此，本项目的主要目标是研究CBN刀具在刀具连续展成磨削过程中的过程行为。

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.