Abstract: A floating fixture platen for use on machine tools having a machine support structure and a machine tool portion rotatable about an axis of rotation, the floating fixture platen including a planar member mounted on the machine support structure in a position normal to the axis of rotation of the rotating tool portion, the platen supporting a workpiece to be operated on by the rotating tool, apparatus on the support structure enabling the platen limited relative free movement in a plane substantially normal to the axis of rotation of the tool whereby rotation of the tool will produce torque in the platen and in the workpiece supported thereby, first and second oppositely facing fluid assemblies each having a piston portion engagable with a surface on the platen and positioned to oppose rotation of the platen, the fluid assemblies having pressure generated therein by the movement of the platen, and a fluid connection between the fluid assemblies to equalize the pressures therein.

Abstract: A computer controlled machine tool such as a honing machine having a work engaging portion and apparatus to control the machine tool including to establish certain machine operating parameters based on the characteristics of the work to be done, including a computer device having an entry device for entering data as to the workpiece to be operated on, a computer storage device containing data pertaining to certain operating conditions and parameters, said computer device producing output data for establishing the operating parameters of the honing machine based on the entered data as to the workpiece, and the stored data, the computer device having outputs at which signals are produced for establishing the operating parameter for the machine tool.