Cutters – for shaping – Including chip breaker – guide or deflector detachable from... – Adjustable relative to cutting edge
Patent
1996-06-24
1998-01-06
Howell, Daniel W.
Cutters, for shaping
Including chip breaker, guide or deflector detachable from...
Adjustable relative to cutting edge
407 6, 407 10, B32B 2722
Patent
active
057047340
ABSTRACT:
A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying a cutting force between the insert (11) and the workpiece, a chipbreaker (23) having a surface (27) that is effective in breaking chips (55, 56) of different thicknesses when positioned at different distances from the cutting edge (19) of the insert (11), and a mounting mechanism (30) for movably mounting the chipbreaker (23) onto the holder (3). The mounting mechanism (30) includes a spring (50) for automatically adjusting the distance between the chipbreaking surface (27) of the chipbreaker (23) and the cutting edge (19) of the insert (11) in response to the forces applied to the chipbreaker (23) by the metal chips (55, 56) that result from the cutting operation. The mounting mechanism (30) may allow the chipbreaker (23) to either slidably reciprocate on the holder (3) toward and away from the cutting edge (19), or to pivotally move with respect to the cutting edge (19). In both cases, the deflection of the spring (50) is proportional to the thickness of the metal chips (55, 56) engaging the chipbreaking surface (27), which in turn automatically provides the appropriate chipbreaking geometry. The inventive tool assembly allows the same chipbreaker (23) to effectively break chips (55, 56) of widely varying thicknesses which are created when the cutting insert (11) is used to make a variety of different types of cuts in a machining operation.
REFERENCES:
patent: 2173772 (1939-09-01), Timmons
patent: 2799079 (1957-07-01), Brigner
patent: 2860402 (1958-11-01), Proksa
patent: 3028657 (1962-04-01), Almen
patent: 3191262 (1965-06-01), Gustafson
patent: 3518737 (1970-07-01), Hood
patent: 4277206 (1981-07-01), Hilton
patent: 4400116 (1983-08-01), Buchmann et al.
patent: 4414870 (1983-11-01), Peterson, Jr. et al.
patent: 4786217 (1988-11-01), Johne
patent: 5122017 (1992-06-01), Niebauer
patent: 5147157 (1992-09-01), Pawlik
International Search Report Mailed Jan. 30, 1995 for International Application PCT/US94/10921.
Gettelman, K.M., Editor-In-Chief, "Bye Bye Birds' Nests," Modem Machine Shop, Sep., 1991.
Hongtau, Zhang et al., "The Theoretical Calculation Of Naturally Curling Radius Of Chip," Int. J. Mach. Tools Manufact., vol. 29, No. 3, 1989, pp. 323-332.
Bater, James S., "Power Reduction Through Efficient Chip Control," Cutting Tool Eng., Jul./Aug. 1975, pp. 4-8, 54.
Ashley John P.
Niebauer Kenneth L.
Howell Daniel W.
Kennametal Inc.
Prizzi John J.
Tsai Henry W. H.
LandOfFree
Metal cutting tool assembly having and automatically adjustable does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Metal cutting tool assembly having and automatically adjustable , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal cutting tool assembly having and automatically adjustable will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2323691