Continuous method for manufacturing face gears
AssigneeThe Gleason Works
InventorHermann J. Stadtfeld
Life of this patent
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Abstract
A continuous method of manufacturing a face gear utilizing a tool, representing a plane which can be oriented to a face gear workpiece under an angle equal to the pressure angle of the mating pinion member of the gear set (e.g. the face gear set), and, which can be rotated around a virtual pinion axis to generate a tooth flank on the workpiece. The tool is a face cutter which performs a continuous indexing motion with equal hand of rotation of cutter and workpiece (e.g. face gear) thereby describing a hypocycloid path of motion and an indexing ratio of two cutter rotations during one workpiece gear rotation which will produce straight lines along the face width of the face gear.
Claims12
A continuous indexing method of manufacturing a face gear having a predetermined number of teeth, said face gear having a plurality of tooth slots with each tooth slot comprising opposing first and second tooth flank surfaces, said method comprising:
- providing a face gear workpiece having an axis of rotation;
- providing a cutting tool having an axis of rotation and comprising a disk body with one or more cutting edges defining one or more cutting blade starts located on a face of said disk;
- rotating said cutting tool and said workpiece at a ratio of two rotations of said cutting tool per one rotation of said workpiece;
- engaging said cutting tool and said workpiece;
- generating said tooth surfaces on said workpiece by moving the tool and workpiece relative to each other;
- wherein said generating comprises additionally rotating said cutting tool about an axis of rotation of a virtual pinion in mesh with said face gear workpiece, said cutting tool describing a generating roll wherein the cutting edges emulate the rolling motion of a tooth of said virtual pinion rotating in mesh with said face gear workpiece during said generating.
Dependencies are inferred from the claim text.