Abstract: A method of grinding or turning a workpiece, such as a bearing workpiece, involves several steps. One step includes locating the bearing workpiece on a chuck with an axis of rotation of the chuck positioned off-center relative to an axis of the bearing workpiece. Another step includes determining an offset between the chuck's axis of rotation and the bearing workpiece's axis based on the off-center position between the chuck's axis of rotation and the bearing workpiece's axis. Yet another step includes determining a path of engagement of a grinding wheel relative to the bearing workpiece based on the offset previously determined between the chuck's axis of rotation and the bearing workpiece's axis.

Abstract: An apparatus mounted to a machine for positioning a device near a workpiece during a machining operation, during which the workpiece is movable relative to a machining tool. The apparatus comprises an arm coupled to the machining tool and movable relative thereto to mimic movement of the workpiece relative to the machining tool. The arm includes a shoe for contacting the workpiece during the machining operation. The apparatus further comprises a linear actuator coupled to the arm for moving the arm between a retracted position and an engaged position. According to one embodiment of the present invention, the apparatus includes a coolant nozzle assembly. According to another embodiment of the invention, the apparatus includes a workpiece support shoe. According to still another embodiment of the present invention, the apparatus includes an in-process gauge assembly.

Abstract: An apparatus mounted to a machine for positioning a device near a workpiece during a machining operation, during which the workpiece is movable relative to a machining tool. The apparatus comprises an arm coupled to the machining tool and movable relative thereto to mimic movement of the workpiece relative to the machining tool. The arm includes a shoe for contacting the workpiece during the machining operation. The apparatus further comprises a linear actuator coupled to the arm for moving the arm between a retracted position and an engaged position. According to one embodiment of the present invention, the apparatus includes a coolant nozzle assembly. According to another embodiment of the invention, the apparatus includes a workpiece support shoe. According to still another embodiment of the present invention, the apparatus includes an in-process gauge assembly.

Abstract: A pair of grinding wheel carriages, each carrying its own grinding wheel, are both carried by a grinding machine to one side of a work carriage and workpiece when carried thereby. The workpiece is, in this instance, a camshaft with multiple pairs of similar cams disposed along the axis of the workpiece. The operation control and disposition of the grinding wheels provides for use of either grinding wheel to grind cam pairs or both grinding wheels to simultaneously grind a pair of cam pairs. The method involves first grinding a first cam pair of spaced but in phase cams with one of the grinding wheels; thereafter utilizing both grinding wheels simultaneously to grind two pairs of spaced cam pairs and repeating this step depending upon the number of cam pairs, lastly the final pair of cam pairs is ground utilizing the other grinding wheel.