Gear cutting – milling – or planing – Milling – Including means to infeed rotary cutter toward work
Patent
1986-08-13
1988-07-19
Weidenfeld, Gil
Gear cutting, milling, or planing
Milling
Including means to infeed rotary cutter toward work
82 12, 82 2E, 82 4C, 408 81, 408104, 408129, B23B 536
Patent
active
047581212
ABSTRACT:
A boring machine which is portable for field use and which is self-chucking and self-centering and has the capability of performing precision machining operations under computer control. The machining operations include pipe boring and internal threading. The boring machine has a chuck with relatively movable components including radially extendable blades for engagement with the interior of a pipe wall. A tool head is mounted for axial movement on a tubular drive shaft which is rotatably supported in cantilever fashion by the chuck. The actuation of the chuck and rotation of the drive shaft are derived from hydraulic means on the chuck within the interior of the pipe and connected to external fluid circuitry through stationary manifolds and fluid passages formed in the wall of the tubular drive shaft. The tool head is moved axially of the drive shaft by a lead screw rotatably driven by a servomotor and a tool slide is radially movable on the tool head by a second servomotor. The servomotors and associated encoder are connected to external electrical circuitry through a slip ring structure.
REFERENCES:
patent: 2706917 (1955-04-01), Hill
patent: 3710659 (1973-01-01), Pagella et al.
patent: 4050836 (1977-09-01), Anders
patent: 4084484 (1978-04-01), Shklyanov et al.
patent: 4248559 (1981-02-01), Deckenback et al.
patent: 4452110 (1984-06-01), Emmerson
Webb Glenn L.
Weidenfeld Gil
Westinghouse Electric Corp.
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