Productivity increase in tool grinding with the help of a "sensing" spindle

目前，硬质合金铣刀和钻头的轴向槽采用蠕变磨削加工（外围纵向磨削）。由于加工力和工件的有限刚度，工件和砂轮之间会发生明显的位移。最小化位移需要一个耗时的设置过程，无论是否使用稳定的休息。该项目的目的是通过消除稳定休息来最小化位移并缩短安装时间。因此，提出了一种位移补偿方法，对过程中产生的位移进行补偿。为此，研制了一种力传感器系统，该系统安装在工件主轴上，测量作用过程力。采用刚度模型和自动测量周期计算过程力引起的位移，利用机床轴作为在线补偿的一部分进行补偿。因此，生产力显着最大化，特别是小批量生产。此外，通过减少废品率来节省原材料。

Currently, axial slots in cemented carbide milling cutters and drills are machined using creep grinding operations (peripheral longitudinal grinding). As a result of the process forces and limited stiffness of the workpiece, significant displacement occurs between the workpiece and the grinding wheel. Minimizing the displacement requires a time-consuming set-up process with and without the use of a steady rest. The aim of the proposed project is to minimise the displacement and shorten the set-up time by eliminating the steady rest. Therefore, a displacement compensation is developed, which compensates the displacement occurring in the process. For this purpose, a force sensor system is developed which is installed in the workpiece spindle and measures the acting process forces. Rigidity models and automated measuring cycles are used to calculate the displacements caused by the process forces to compensate them by use of machine axes as part of online compensation. Thus, the productivity is significantly maximized, especially for small batch sizes. Furthermore, raw material is saved by minimizing rejects.