Theoretical study on a non-transmission high efficient parallel camber grinding machine

Some problems existing in present grinding machines are analyzed, and a new type of CNC grinding machine is presented. As the feed system of this grinding machine is a parallel mechanism driven directly by linear motors, some traditional transmission forms are not required, such as the ball lead screw pairs, the gears, the hydraulic transmission device, etc. A complex space trajectory of the emery wheel can be achieved, and high accuracy feeding and positioning of the emery wheel can be accomplished with an open-loop control system only. High grinding speed and step-less speed variation can be achieved because of the spindle being driven directly by a non-frame motor. Not only complex work-pieces of high hardness or low hardness materials, but also complex work-pieces of hard-to-machine materials are suitable to be ground by this grinding machine.