Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1974-08-01
1977-08-23
Simpson, Othell M.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
408129, 408159, B23B 3500
Patent
active
040436950
ABSTRACT:
An apparatus for enlarging the diameter of an existing bore within a turbine shaft or the like along a desired linear portion of the shaft having a boring head mounted on a drive shaft for rotation therewith after insertion within the existing bore. The boring head has a pair of opposed matable cutting tool means pivotally mounted within it which are radically advanced or retracted toward or away from the walls of the existing bore by operation of a cam assembly also mounted in the boring head for axial movement therealong and engaging an end of the tool means opposite the cutting head. The cam assembly is mounted for movement on a threaded transmission member which is rotated to move the cam assembly by an adjustment shaft positioned for calibrated angular movement within an interior passageway formed in the drive shaft. The boring assembly is rotated for cutting by a drive means engaging the exterior surface of the drive shaft and is linearly moved within the turbine shaft by a driven feed table.
REFERENCES:
patent: 599655 (1898-02-01), Huben
patent: 1183450 (1916-05-01), Hammann
patent: 2009822 (1935-07-01), Thorsen
patent: 2236944 (1941-04-01), Gerardi
patent: 2333589 (1943-11-01), Schauer
patent: 2391794 (1945-12-01), O'Brien, Jr.
patent: 3469474 (1969-09-01), Wagner
Alco Standard Corporation
Bilinsky Z. R.
Simpson Othell M.
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