EP 0519267 B1 19950419 - Bore nitride coated micro-milling tool.
Title (en)
Bore nitride coated micro-milling tool.
Title (de)
Bornitrid-belegter Mikro-fräser.
Title (fr)
Micro-fraise revêtue de nitrure de bore.
Publication
Application
Priority
DE 4119872 A 19910617
Abstract (en)
[origin: EP0519267A1] The invention relates to a rotating tool for machining hardened workpieces, preferably made of steel, consisting of a steel, preferably hardened, parent body (1) with a defined working surface (2) which is provided with a coating (6) of superhard material, preferably boron nitride. In order to provide defined cutting edges in a tool of this type for the precision machining of workpieces with a hardness of up to 62 HRC, the working surface (2) is provided with a multiplicity of micro chip grooves (3) which run parallel to one another, are orientated at an acute angle to a tangent applied to the working surface (2) and have a cross-sectional profile with defined cutting edge (4) and defined chip space (5), the entire working surface (2) being provided with a homogeneous coating (6) of the same thickness of superhard material, preferably boron nitride. <IMAGE>
IPC 1-7
IPC 8 full level
B23F 21/02 (2006.01); B24D 5/06 (2006.01)
CPC (source: EP US)
B24D 5/06 (2013.01 - EP US); Y10T 407/1904 (2015.01 - EP US); Y10T 407/1948 (2015.01 - EP US); Y10T 407/20 (2015.01 - EP US); Y10T 407/27 (2015.01 - EP US)
Citation (examination)
EP 0361027 A1 19900404 - HAWERA PRAEZISIONSWERKZEUGE [DE]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL PT SE
DOCDB simple family (publication)
EP 0519267 A1 19921223; EP 0519267 B1 19950419; AT E121336 T1 19950515; CA 2071121 A1 19921218; CA 2071121 C 19960521; DE 4119872 A1 19921224; DE 4119872 C2 19940630; DE 59201953 D1 19950524; ES 2072050 T3 19950701; JP H05192817 A 19930803; US 5299892 A 19940405
DOCDB simple family (application)
EP 92109332 A 19920603; AT 92109332 T 19920603; CA 2071121 A 19920616; DE 4119872 A 19910617; DE 59201953 T 19920603; ES 92109332 T 19920603; JP 19260292 A 19920611; US 90001692 A 19920617