Metal working – Method of mechanical manufacture – Repairing
Patent
1990-12-18
1992-01-07
Gorski, Joseph M.
Metal working
Method of mechanical manufacture
Repairing
2940211, B23P 600
Patent
active
050778820
ABSTRACT:
Apparatus for reboring a damaged portion in the first of first and second bores (15, 14) in a counterbored workpiece (12) contemplates a first pilot (35) for extending through the second bore and engaging the first bore interiorly, a cylinder (41) for supporting and axially driving the first pilot and the workpiece, a second pilot (55) for engaging the first bore exteriorly, a cylinder and motor (52) for supporting an axially driving the second pilot in opposed relation to the cylinder for supporting and axially driving the first pilot, and a boring device (53) for supporting and axially driving the second pilot for reboring a damaged portion of the first bore. The method for repairing the bore of the workpiece includes the steps of mounting the workpiece on the first pilot engaging the first bore interiorly of the damaged portion, positioning the second pilot for engaging the first bore exteriorly of the damaged portion, driving the first and second pilots into closer positioning to effect concentric alignment of the first bore in the workpiece with the first and second pilots, simultaneously moving the first and second pilots to clamp the workpiece against a fixed plate while maintaining the concentric alignment of the first bore with the first and second pilots, disengaging the second pilot from the extremity of the first bore of the workpiece, and inserting a boring device into the extremity of the first bore for reboring the damaged portion thereof.
REFERENCES:
patent: 2956456 (1960-10-01), Bisceglia et al.
patent: 3191463 (1965-06-01), Ladendorf
patent: 4197041 (1980-04-01), Prewitt
patent: 4339857 (1982-07-01), Dickinson
patent: 4548530 (1985-10-01), Weibler
patent: 4571795 (1986-02-01), Shieto
patent: 4932814 (1990-06-01), York
patent: 4969246 (1990-11-01), Shieto
Dungba Vo Peter
Gorski Joseph M.
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