EP 0885093 A4 20000412 - CUTTING INSTRUMENTS
Title (en)
CUTTING INSTRUMENTS
Title (de)
SCHNEIDEINSTRUMENTE
Title (fr)
INSTRUMENTS COUPANTS
Publication
Application
Priority
- US 9702324 W 19970214
- US 1164896 P 19960214
- US 2925196 P 19961024
- US 3678497 P 19970128
Abstract (en)
[origin: WO9729892A1] A process for making a cutting instrument (32) includes cutting a blank (350) from a plate (352) or strip of Type 60 Nitinol, having a thickness of between 0.005''-0.500'' using an abrasive waterjet (360), wire electron discharge machining (EDN) or laser cutting, and grinding top and bottom surfaces of the blank (350) by rotating a grinder (382) having cubic boron nitride or diamond abrasive particles on a cutting surface of said grinder (382) against the knife blank (350) at a surface speed of about 5000 to 7000 surface feet per minute and grinding to a depth of about 0.001 to 0.005 inches per pass to remove material along the blade surface. The surface of the blade (34) is polished to a surface finish smoother than 20 microinches RMS using Turkish emery abrasive grinding/polishing materials on a buffing wheel driven by a high power motor. The blade is then finish polished to a mirror-like luster of 2 microinches RMS or less using a fine diamond buffing compound and a buffing wheel running at about 3000 RPM. An edge (390) is ground into the polished blade blank using an Arkansas stone grinder.
IPC 1-7
IPC 8 full level
B26B 9/00 (2006.01)
CPC (source: EP)
B26B 9/00 (2013.01)
Citation (search report)
- [A] US 5256496 A 19931026 - KLUCZYNSKI MATHEW L [US]
- [A] US 4896424 A 19900130 - WALKER MICHAEL L [US]
- [A] US 5210925 A 19930518 - MORGULIS MARK [US]
- See references of WO 9729892A1
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9729892 A1 19970821; AU 1958797 A 19970902; CA 2257065 A1 19970821; EP 0885093 A1 19981223; EP 0885093 A4 20000412
DOCDB simple family (application)
US 9702324 W 19970214; AU 1958797 A 19970214; CA 2257065 A 19970214; EP 97907629 A 19970214