Active Vibration Reduction To Optimize The Grinding Process

High production quality and processing velocity characterizes an efficient machine tool. Higher velocities lead to increasing process forces, hence the stiffness of the machine must be high. Especially in grinding, the dynamic stiffness of a machine influences the process stability enormously. The stability of the grinding process is affected by the specification of the grinding wheel, machine parameters and the condition of the worldpiece. Chattering is simply a consequence of vibration within a grinding system. At present, parts of the machine tools (structures, drives, measuring systems, etc.) are constantly being improved. However, a better performance can only be achieved by applying innovative basic approaches. In this paper a grinding machine with integrated active modules is presented. The aim of the modules, which consist of piezo actuators and force transducers, is to increase the static and dynamic stiffness of the structure and minimize vibrations.