EP 2703138 A1 20140305 - CUTTING BLADE AND ROTARY CUTTING TOOL
Title (en)
CUTTING BLADE AND ROTARY CUTTING TOOL
Title (de)
SCHNEIDEEINSATZ UND ROTIERENDES SCHNEIDEWERKZEUG
Title (fr)
LAME DE COUPE ET OUTIL DE RASAGE ROTATIF
Publication
Application
Priority
- JP 2011099566 A 20110427
- JP 2012002357 W 20120404
Abstract (en)
The invention provides a cutting blade reduced in thickness and accordingly produced with less blade materials wherein the flexural rigidity of the whole blade is improved. A base material used in the blade is a steel material, a cemented carbide, or a steel material with a cemented carbide used in an edge part of the blade alone. The blade is a long and thin plate having a nearly rectangular shape and elastically deformable. The blade is approximately 0.5 mm in thickness. In the blade, the use of any costly blade materials is minimized. As a result, the blade is made available at low prices. A flank face of the blade has a clearance angle that equals 0°. In the blade, a predefined area of a rake face including a cutting edge is coated with a chromium nitride hard film. The blade is bent in a direction opposite to a direction of rotation and then fitted in a fitting groove of the tool body. The twist angles on end-surface sides of the blade are positive and negative angles. Therefore, the depth of the blade is circumferentially large enough, and the blade thereby has a higher flexural rigidity than its original flexural rigidity before bending.
IPC 8 full level
B27G 13/02 (2006.01); B23C 5/04 (2006.01); B27G 13/04 (2006.01)
CPC (source: EP)
B27G 13/02 (2013.01); B27G 13/04 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2703138 A1 20140305; EP 2703138 A4 20141022; JP 2012228842 A 20121122; TW 201244901 A 20121116; WO 2012147282 A1 20121101
DOCDB simple family (application)
EP 12776292 A 20120404; JP 2011099566 A 20110427; JP 2012002357 W 20120404; TW 101113689 A 20120418