Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Patent
1997-10-17
1998-12-15
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool-support with means to move tool relative to tool-support
To move radially
408180, B23B 5100
Patent
active
058488600
ABSTRACT:
A cylindrical tool body is chucked at one end in a drive spindle, and has in its opposite end a cutter blade pivotal into and out of a recess in the tool body between inoperative and operative positions, respectively. The pivoted end the cutter has thereon spaced teeth drivingly engaged with the teeth of a rack formed on one end of an elongate operating rod which reciprocates in an axial bore in the tool body. The opposite end of the rod is secured to one end of a radial pin, the opposite end of which projects slidably into a helical groove formed in the inner peripheral surface of an actuating ring which surrounds the tool body adjacent its chucked end. A friction ring which is rotatable on the tool body adjacent the actuating ring is frictionally engaged with the actuating ring by a friction clutch device which also surrounds the tool body adjacent the friction ring. When the friction ring is secured against rotation, and the rotation of the tool body is reversed by the drive spindle, the tool body momentarily rotates relative to the actuating ring, thus causing the helical groove to shift the radial cutter actuating pin slightly axially in the tool body thereby causing the cutter actuating rod slightly axially so that its rack pivots the cutter blade from one end to the other of its limit positions. In a second embodiment two cutter blades are pivotally mounted in a recess in the tool body for operation by two separate operating rods, each of which carries a radial actuating pin which projects into the helical groove formed in the inner peripheral surface of the actuator ring.
REFERENCES:
patent: 963596 (1910-07-01), Lescure
patent: 2404027 (1946-07-01), Belanger
patent: 3806271 (1974-04-01), Ishiguro et al.
patent: 3827821 (1974-08-01), Swenson
patent: 4043695 (1977-08-01), Gottelt
patent: 4307636 (1981-12-01), Lacey
Howell Daniel W.
R. Steiner Technologies, Inc.
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