EP 0739697 B1 2000-07-12 - ROTARY CUTTING TOOL FOR WORKING OF WOOD OR WOOD COMPOSITE MATERIAL
ROTARY CUTTING TOOL FOR WORKING OF WOOD OR WOOD COMPOSITE MATERIAL
ROTIERENDES SCHNEIDWERKZEUG ZUM BEARBEITEN VON HOLZ ODER HOLZVERBUNDWERKSTOFF.
OUTIL DE COUPE ROTATIF POUR LE TRAVAIL DU BOIS OU D'UN MATERIAU COMPOSITE A BASE DE BOIS
- JP 9401537 W
- JP 25932393 A
[origin: WO9508423A1] A rotary cutting tool has a cutting blade which is formed with an outer peripheral surface edge and a side surface edge. A flank (4) of the side surface edge having a clearance angle of not more than 10 DEG in a direction of rotation of the side surface edge is finished to have a surface roughness Rmax of 1 to 10 mu m. The outermost surface is covered with chromium or one of chromium nitride, carbide and carbide nitride whereby a harmful resin is prevented from adhering to the tool. The use of this tool provides more than ten times the life of a conventional tool and permits the use of high speed tool steel as a material for a blade edge in place of cemented carbide to make the tool inexpensive.
IPC 1-7 (main, further and additional classification)
IPC 8 full level (invention and additional information)
CPC (invention and additional information)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family
WO 9508423 A1 19950330; CA 2172366 A1 19950330; DE 69425277 D1 20000817; DE 69425277 T2 20010222; DE 69425277 T3 20050623; EP 0739697 A1 19961030; EP 0739697 A4 19980128; EP 0739697 B1 20000712; EP 0739697 B2 20040922; JP 2673655 B2 19971105; JP H0788806 A 19950404