Abstract: The end mill grinding device of the present invention includes a tool spindle assembly and a motor tower which enables multi-axis positioning of a sharpening wheel in relation to an end mill cutting tool being sharpened, for sharpening the end mill tool. The present invention combines linear sharpening and radial tool end grinding capability in the same device.

Abstract: A tool grinder is disclosed which includes a variable speed DC motor having an output shaft, and a cutter wheel mounted on the output shaft and having a precision coating of prone superabrasive particles. The grinder preferably further includes a motor controller for governing a rotational speed of the motor between 100 rpm and 2000 rpm. This minimizes the surface speed of the cutter wheel and the friction heat generated by contact of the workpiece with the cutter wheel. The precision coating of prone superabrasive particles minimizes rubbing contact between the cutter wheel and the workpiece during material removal from the workpiece. The cutter wheel preferably has a first cutting surface parallel to an axis of rotation of the wheel and one or more additional cutting surfaces perpendicular to the axis of rotation, at another angle to the axis of rotation, or both.

Abstract: The end mill grinding device of the present invention includes a tool spindle assembly and a motor tower which enables multi-axis positioning of a sharpening wheel in relation to an end mill cutting tool being sharpened, for sharpening the end mill tool. The present invention combines linear sharpening and radial tool end grinding capability in the same device.

Abstract: A tool grinder is disclosed which includes a variable speed DC motor having an output shaft, and a cutter wheel mounted on the output shaft and having a precision coating of prone superabrasive particles. The grinder preferably further includes a motor controller for governing a rotational speed of the motor between 100 rpm and 2000 rpm. This minimizes the surface speed of the cutter wheel and the friction heat generated by contact of the workpiece with the cutter wheel. The precision coating of prone superabrasive particles minimizes rubbing contact between the cutter wheel and the workpiece during material removal from the workpiece. The cutter wheel preferably has a first cutting surface parallel to an axis of rotation of the wheel and one or more additional cutting surfaces perpendicular to the axis of rotation, at another angle to the axis of rotation, or both.

Abstract: A tool grinder is disclosed which includes a variable speed DC motor having an output shaft, and a cutter wheel mounted on the output shaft and having a precision coating of prone superabrasive particles. The grinder preferably further includes a motor controller for governing a rotational speed of the motor between 400 rpm and 3500 rpm, preferably between 400 rpm and 2000 rpm. The motor preferably has two output shafts, respectively at opposite ends of the motor and a pair of cutter wheels, preferably having a first cutting surface parallel to an axis of rotation of the wheel and a second cutting surface perpendicular to the axis of rotation, or at an angle to the axis of rotation other than perpendicular.