Abstract: A centerless grinder is adapted to have a regulating wheel feed radially towards a grinding wheel about a pivot point to accomplish an infeed grind operation on a plurality of parts between the wheels. The parts are infeed ground at a plurality of stations from an inlet end of the wheels to an outlet end of the wheels, when the pivot point is proximate the outlet end, thereby achieving variable feed distances and variable feed rates along the face of the regulating wheel relative to the grinding wheel, from the inlet end to the outlet end. After such an infeed grind operation, the plurality of parts are advanced to their next adjacent stations for a subsequent grind operation. By the arrangement disclosed, coarse-feed grinding is performed on one workpiece while fine-feed grinding is performed on another piece and varying degrees of rates of grinding are performed on the intermediate pieces during the same time interval.

Abstract: A centerless grinder for shaping bars during a through-feed grinding operation. A special centerless grinder is adapted to receive a workpiece at an inlet end between the regulating and grinding wheels and to discharge the workpiece at an exit end between the wheels while a special pivoting mechanism is provided to relatively pivot the wheels with respect to one another about a pivot point proximate the wheel inlet end. The relative pivoting movement of the wheels is performed in timed relationship to the through-feed movement of the workpiece, so that the exit spacing of the wheels determines the final, exiting, diameter of the workpiece at a given time. Therefore, varying cross-sectional diameters of a workpiece may be achieved along a work axis by appropriate timed movement of the wheels.

Abstract: A centerless grinder is adapted to have a regulating wheel feed towards a grinding wheel about a pivot point to accomplish an infeed grind operation on a plurality of parts between the wheels. The parts are infeed ground at a plurality of stations from an inlet end of the wheels to an outlet end of the wheels, and the pivot point is proximate the outlet end, thereby achieving variable feed distances and variable feed rates along the face of the regulating wheel relative to the grinding wheel, from the inlet end to the outlet end. After an infeed grind operation, the plurality of parts are advanced to their next adjacent stations for a subsequent grind operation. By the arrangement disclosed, coarse-feed grinding is performed on one workpiece while fine feed grinding is performed on another piece and varying degrees of rates of grinding are performed on the intermediate pieces during the same time interval.

Abstract: An angular feed centerless grinder having a frusto-conical grinding wheel adapted to simultaneously grind a workpiece diameter and adjacent shoulder by feeding the wheel relative to the workpiece at an angle to the center line of the workpiece, i.e. at the juncture of the work diameter and shoulder. A generally cylindrical regulating wheel is adapted to support and drive the workpiece in a conventional manner. The grinding wheel and regulating wheel are adapted to move relative to the workpiece along their respective line of centers between the wheels and the workpiece, thus establishing an obtuse angle between the feed vectors of the regulating and grinding wheels in the one plane, while an obtuse angle is likewise established between the feed vectors in a second, perpendicular plane.