Metal tools and implements – making – Blank or process – Drill
Reexamination Certificate
2008-03-11
2008-03-11
Ashley, Boyer D. (Department: 3724)
Metal tools and implements, making
Blank or process
Drill
C029S557000, C072S254000, C072S338000, C425S381000, C470S010000, C470S016000, C470S066000
Reexamination Certificate
active
07340978
ABSTRACT:
A method for manufacturing a rotary tool for chip removing machining with at least one chip flute that extends in the longitudinal direction of the tool. The method involves preparing a mixture of a cemented carbide, cermet or ceramics powder and a carrier, such as a polymer, and placing the mixture in an extruding machine. The mixture is extruded in a feed direction by means of a die to form the diameter of the mixture body. The mixture body passes against a chisel which forms a chip flute in the outer periphery of the mixture body by chip-removing machining. When the chisel is displaced away from the mixture body, a non-fluted shaft portion is formed. By rotating the mixture body while contacted by the chisel, a helical chip flute can be formed. Alternatively, the body could be twisted after a straight flute has been formed, whereupon the flute becomes helical.
REFERENCES:
patent: 2989777 (1961-06-01), Bailey, Jr.
patent: 3002615 (1961-10-01), Lemelson
patent: 3874207 (1975-04-01), Lemelson
patent: 4704055 (1987-11-01), Guhring
patent: 4779440 (1988-10-01), Cleve et al.
patent: 4826364 (1989-05-01), Grunsky
patent: 5116659 (1992-05-01), Glatzle et al.
patent: 5438858 (1995-08-01), Friedrichs
patent: 5780063 (1998-07-01), Friedrichs
patent: 6450739 (2002-09-01), Puide et al.
patent: 6669414 (2003-12-01), Puide et al.
patent: 7101167 (2006-09-01), Puide et al.
patent: 2002/0130434 (2002-09-01), Rigali et al.
patent: 1 075 885 (2001-02-01), None
patent: 11-226810 (1999-08-01), None
patent: WO 00/74870 (2000-12-01), None
Ericsson Roine
Fair Jonathan
Kugelberg Jören
Micski Anders
Ashley Boyer D.
Drinker Biddle & Reath LLP
Landrum Edward
Sandvik Intellectual Property AB
LandOfFree
Method and apparatus for making a rotary tool for chip... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for making a rotary tool for chip..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for making a rotary tool for chip... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2802072