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US 4,203,258 AGranted
Gear finishing machine
OwnerGerhard R. Heldinventor
Life of this patent
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OwnerGerhard R. Heldinventor
Estimating the term…
In a gear finishing or other machine having a base, a table support mounting a reciprocal table having a head stock and a tail stock for supporting a workpiece gear or spline to be finished, a pedestal on the base mounting a motor-operated transmission and a depending machine head mounting a power-driven abrasive honing, or other type finishing gear rotatable upon a horizontal or vertical axis, the table support or head being relatively adjustable with respect to the other to bring the workpiece teeth into operative position with respect to the teeth of the finishing gear. The improvement which comprises a first gear train connecting said transmission to said finishing gear for rotation thereof at a predetermined speed. A drive spindle is journalled through said head stock adapted for axial drive engagement with the workpiece gear to be finished. A second gear train interconnects said transmission with said drive spindle for rotation at a predetermined speed. A compensating support device mounts a portion of the second gear train to provide for continuous drive thereof during relative vertical adjustments between the table and head. The first gear train has an accumulated backlash therein as does the second gear train. A backlash compensator is mounted on the table and connected to the second gear train for equalizing the backlash in both trains for the initial positioning of the finishing gear teeth with respect to the workpiece teeth. The compensator further functions to modify the accumulated backlash of the second gear train, alternately advancing and retracting the teeth of the workpiece gear with respect to the teeth of the finishing gear, either manually or automatically. Thus, on feed of the workpiece in one direction, one side of the teeth of the finishing gear engages one side of the workpiece gear teeth, and upon feed in the opposite direction, the opposite sides of the finishing gear teeth engage the other sides of the workpiece gear teeth.
In a gear finishing machine having a base, a vertically adjustable table support, a horizontally reciprocal table having a head stock and tail stock to axially and rotatively support a workpiece gear to be finished, a pedestal on said base including a top plate overlying said table and mounting a motor-operated transmission, and a machine head depending from said transmission rotatably adjustable upon a vertical axis, and mounting a powerdrive abrasive honing or other type finishing gear rotatable upon a horizontal axis and connected to said transmission, said table support and head being relatively adjustable vertically to bring the workpiece teeth into operative engagement with the teeth of said finishing gear;
In a gear finishing machine having a base, a vertically adjustable table support, a horizontally reciprocal table having a head stock and tail stock to axially and rotatively support a workpiece gear to be finished, a pedestal on said base including a top plate overlying said table and mounting a motor-operated transmission, and a machine head depending from said transmission rotatably adjustable upon a vertical axis, and mounting a powerdriven abrasive honing or other type finishing gear rotatable upon a horizontal axis and connected to said transmission, said table support and head being relatively adjustable vertically to bring the workpiece teeth into operative engagement with the teeth of said finishing gear;
In a gear finishing machine having a base, a vertically adjustably table support, a horizontally reciprocal table having a head stock and tail stock to axially and rotatively support a workpiece gear to be finished, a pedestal on said base including a top plate overlying said table and mounting a motor-operated transmission, and a machine head depending from said transmission rotatably adjustable upon a vertical axis, and mounting a powerdriven abrasive honing or other type finishing gear rotatable upon a horizontal axis and connected to said transmission, said table support and head being relatively adjustable vertically to bring the workpiece teeth into operative engagement with the teeth of said finishing gear;
Dependencies are inferred from the claim text.