Patent ID: 6438446
Filing Date: 2002-08-20
Classification: G05B,Y10T

Abstract:
A calculator for determining the proper rotational speed of a spindle used to rotate a non-numerically controlled, floor supported cutting tool for working a workpiece, comprising:a microprocessor provided within the calculator with a memory containing the surface foot rating of a plurality of workpiece materials as well as relationships between said surface foot ratings of the workpiece and the diameter of the non-numerically controlled floor supported cutting tool with respect to the surface foot rating of the workpiece and the RPM of the spindle; a first input device provided on the exterior surface of the calculator for scrolling through a plurality of material selections of the workpiece; a second input device provided on the exterior surface of the calculator for scrolling through a plurality of machine operations for working the workpiece; a third input device provided on the exterior surface of the calculator for scrolling through a plurality of tools for working the workpiece; and a display provided on the exterior of the calculator for displaying a plurality of outputs generated by said microprocessor and said first input device, said second input device and said third input device, said display displaying the surface foot rating of a selected workpiece, a particular operation to be performed on the workpiece, the proper rotational speed of the spindle based on the diameter of the selected tool to perform the operation on the workpiece.