Theoretical Research on Non-Transmission Chain High Efficient Parallel Camber Grinding Machine

摘要

Some problems existing in present grinding machines are analyzed, and a newrntype CNC grinding machine is presented. As feed system of this grinding machine is arnparallel mechanism driven directly by linear motors, some traditional transmission formsrnare cancelled, such as the ball lead screw pairs, the gears, the hydraulic transmissionrndevice, etc. Complex space trajectory of the emery wheel can be achieved, and highrnaccuracy feed and positioning of the emery wheel can be finished with open-loop controlrnsystem only. High grinding speed and step-less speed variation can be achieved because ofrnthe spindle driven directly by non-frame motor. Not only complex work-pieces of highrnhardness or low-hardness materials but also complex work-pieces of hard-to-machinernmaterials are fit to be ground by this grinding machine.