Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool
Reexamination Certificate
1999-12-17
2002-08-13
Wellington, A. L. (Department: 3722)
Cutters, for shaping
Rotary cutting tool
Including holder having seat for inserted tool
C048S052000, C048S117000
Reexamination Certificate
active
06431799
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a slotting cutter. More particularly, the present invention relates to a slotting cutter including multiple opposing inserts capable of cutting to a flat bottom and also contour cutting the side and/or the bottom of a slot in a work piece in as many as 5 axes.
BACKGROUND OF THE INVENTION
Slotting cutters are known for cutting keyways and the like and, also, for providing a work piece with slots of various width.
Slotting cutters of the nature referred to are somewhat similar to milling cutters in that the cutter usually employs a disc-like member having cutting inserts mounted in the periphery thereof. In a milling cutter, the cutting inserts are generally presented axially, whereas, in a slotting cutter, the cutting inserts protrude radially from the supporting disc and are, thus, presented to the work piece in the radial direction.
For a more detailed description of the operation of a slotting cutter reference is made to U.S. Pat. No. 3,940,835, incorporated herein by reference.
In order to form slots rapidly and efficiently, it is essential that the cutting inserts be solidly supported in the support disc and have adequate clearance between the cutting edges of the inserts and the support disc as the material is removed from the work piece. With the inserts solidly supported and having sufficient clearance between the support disc and the cutting edges, the slotting cutter is able to withstand substantial loads and can cut extremely rapidly, freely and accurately while maintaining the ability to easily discharge large volumes of chips that may be generated during the cutting process.
With the foregoing in mind, a primary object of the present invention is the provision of a slotting cutter of improved design.
Another object is the provision of a cutting insert for detachably mounting in the slotting cutter and especially adapted for use therewith.
BRIEF SUMMARY OF THE INVENTION
Briefly, according to the present invention, there is provided a slotting cutter, including a support disc rotatable in a predetermined direction on a central axis. The support disc is of a generally cylindrical shape having a first side and a second side, and an outer periphery. A plurality of pockets are staggered about the outer periphery of the support disc. A cutting insert is secured in each pocket. Each cutting insert includes at least one cutting edge. The cutting insert extends laterally outwardly beyond the first side of the support disc and is spaced from the second side of the support disc whereby the cutting edge of adjacent inserts are positioned to laterally overlap thereby providing an increased effective cutting path width.
REFERENCES:
patent: 1762111 (1930-06-01), Weddell
patent: 2037642 (1936-04-01), Scribner
patent: 2583309 (1952-01-01), Sloderbeck et al.
patent: 2600272 (1952-06-01), Segal
patent: 2684520 (1954-07-01), Severson
patent: 3116538 (1964-01-01), Severson
patent: 3587150 (1971-06-01), Menard
patent: 3729808 (1973-05-01), Wolf et al.
patent: 3754309 (1973-08-01), Jones et al.
patent: 3757397 (1973-09-01), Lindsay
patent: 3821837 (1974-07-01), Faber
patent: 3887975 (1975-06-01), Sorice et al.
patent: 3940835 (1976-03-01), Friedline et al.
patent: 4222298 (1980-09-01), James
patent: 4363576 (1982-12-01), Zweekly
patent: 4433948 (1984-02-01), Kodama
patent: 4714383 (1987-12-01), Shimomura et al.
patent: 5090845 (1992-02-01), Bentjens
patent: 5393174 (1995-02-01), Wawrzyniak
patent: 5685670 (1997-11-01), Satran
patent: 5893683 (1999-04-01), Johnson
patent: 6033157 (2000-03-01), Satran et al.
patent: 6062775 (2000-05-01), Satran et al.
patent: 880838 (1953-06-01), None
patent: WO9962662 (1999-12-01), None
Machinery's Handbook, 25th ed., 1996, Industrial Press, Inc., p 769.
Francis Mark A.
Frye Howard W.
Kucharik Kay E.
Machacek David C.
Morris Donald P.
Ergenbright Erica
Kennametal PC Inc.
Meenan Larry R.
Wellington A. L.
LandOfFree
Slotting cutter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Slotting cutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slotting cutter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2899791