Abrading – Precision device or process - or with condition responsive... – With indicating
Patent
1997-05-20
1998-07-21
Rose, Robert A.
Abrading
Precision device or process - or with condition responsive...
With indicating
451 49, 451 51, 451143, 451242, 451246, B24B 4900
Patent
active
057826749
ABSTRACT:
A grinding machine for grinding an internal cylindrical surface of a workpiece in which the workpiece is moved toward a grinding wheel along the axis of revolution of the workpiece and the grinding wheel is moved transversely of the axis of revolution toward the cylindrical surface of the workpiece. The grinding wheel is mounted on a supporting structure which is mounted for pivoting about an axis which is transverse to the axis of revolution. A deflective stiffening element restrains the angular displacement of the supporting structure. The deflection of the stiffening element is proportional to the deflection of the spindle. The deflection of the stiffening element is measured by a sensor which transmits an electrical signal to a drive mechanism for angularly positioning the supporting structure in response to the signal to compensate for the deflection of the spindle. A ring-shaped workpiece is supported on the workhead by a magnetic face plate. The outer surface of the ring is engaged by a pair of shoes to establish a workpiece axis of revolution which is offset from the axis of revolution of the wheelhead. A sensor is mounted on the grinding machine for detecting the position of the outer surface of the ring and for transmitting an electrical signal to a computer for calculating the relative OD size of the ring in comparison to a norm for rings and for controlling the transverse feed of the grinding wheel in accordance with sensed OD size of the ring.
REFERENCES:
patent: 2680941 (1954-06-01), Hahn
patent: 4505074 (1985-03-01), Kogure
patent: 4606150 (1986-08-01), Grimm
patent: 5044125 (1991-09-01), Lambert, Jr. et al.
Nguyen George
Rose Robert A.
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