Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Movable relative to tool along tool-axis
Patent
1981-02-04
1983-12-06
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Movable relative to tool along tool-axis
408114, 408141, 408712, B23B 4514
Patent
active
044190328
ABSTRACT:
An improved boring tool comprising a generally elongated housing member, an angle drive mechanism providing rotation about an axis at right angles to the housing member, and a unique floating boring bit which is slidably mounted upon the angle drive mechanism for axial movement along the axis of rotation. The boring bit features a central lead screw for drawing the bit axially into and through the workpiece over which the boring bit is placed as permitted by the floating mounting. A telescoping wall structure of the boring bit permits the bit to continue extending axially to complete penetration of the workpiece. An integral power source may be provided or provision made for the attachment of a portable electric drill or other readily available external power source. The cutting head of the boring bit may be removably mounted to facilitate replacement of worn cutting surfaces and to permit substitution of boring bits of different sizes for boring holes of different diameters. The angle drive mechanism may include beveled spur gears, a worm gear, pulleys and belts, or chain and sprocket elements, and may be driven by either a flexible or rigid shaft.
REFERENCES:
patent: 836212 (1906-11-01), Pierce et al.
patent: 924473 (1909-06-01), Kindleberger et al.
patent: 1114373 (1914-10-01), Lane
patent: 1517987 (1924-12-01), Henderson
patent: 2617455 (1952-11-01), Kuta
patent: 3006223 (1961-10-01), Broussard
patent: 3032156 (1962-05-01), Eriksson
patent: 4021133 (1977-05-01), Ebert
patent: 4184795 (1980-01-01), Medlin
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