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操作。这些齿轮的关键特征是齿在圆周上的周期性布置，其具有关于齿轮的旋转轴线的平行或倾斜的齿面。这允许在遵循传动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切削工具中找到，例如端米尔斯、钻头、铰刀或侧铣刀。这些工具通常使用普通成型砂轮生产，例如圆柱形砂轮，成型砂轮和具有线性轮廓的杯形砂轮。该项目的第一部分表明，使用连续展成磨削工艺生产切削刀具是可能的。特别是多个切削齿的同时加工和砂轮移位策略的利用，展示了这种创新的刀具磨削工艺的潜力。同时生产前刀面和后刀面可以减少必要的生产步骤，从而减少制造时间。从齿轮磨削中已知的移位策略的利用通过减少刀具磨损来保证工件几何形状的更高精度，并且提供了进一步提高切削刀具制造过程的生产率的可能性。然而，为了最大限度地发挥新开发工艺的性能，必须对CBN砂轮的利用率进行研究。因此，本计画的主要目的是研究CBN刀具在连续展成磨削时的加工行为。

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.