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1. (WO1989000474) COUNTER-ROTATING SAW BLADES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000474 International Application No.: PCT/SE1988/000383
Publication Date: 26.01.1989 International Filing Date: 14.07.1988
Chapter 2 Demand Filed: 08.03.1989
IPC:
B23D 45/10 (2006.01) ,B27B 5/30 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
D
PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
45
Sawing machines or sawing devices with circular saw blades or with friction saw discs
10
with a plurality of circular saw blades
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
B
SAWS; COMPONENTS OR ACCESSORIES THEREFOR
5
Sawing machines working with circular saw blades; Components or equipment therefor
29
Details; Component parts; Accessories
30
for mounting or securing saw blades or saw spindles
Applicants:
GEBELIUS, Sven, Runo, Vilhelm [SE/SE]; SE
Inventors:
GEBELIUS, Sven, Runo, Vilhelm; SE
Agent:
NORÉN, Per, Bo, Arne; Swedpatent AB P.O. Box 186 S-198 00 Balsta, SE
Priority Data:
8702867-614.07.1987SE
Title (EN) COUNTER-ROTATING SAW BLADES
(FR) LAMES DE SCIE CONTRAROTATIVES
Abstract:
(EN) A pair of saw blades, including two each other adjacently located saw blades (1, 2), arranged to take up a saw cut in a work piece (5) in a common and co-acting operation during rotation in relation to each other counter-rotating directions. According to the invention, the saw teeth (3, 4) of the saw blades (1, 2) are arranged with a specific inclination for each saw blade (1, 2) at the cutting edge portion for related saw teeth (3, 4), whereby the saw teeth (3, 4) in a pair of saw blades are arranged to take up contact as a first portion with a work piece with the part of each saw tooth (3, 4) that is closest to the co-acting saw blade (1, 2), thereby imposing a force arranged to displace the saw blades (1, 2) in direction towards each other. When setting the saw teeth (3, 4), the saw teeth (3, 4) of each saw blade (1, 2) are set in one side direction only, and in direction away from the plane intended to be located as an adjacent plane in relation to co-acting saw blade (1, 2). The saw blades (1, 2) forming a pair of saw blades are advantageously arranged with means only facilitating attachment of the saw blades (1, 2) in an each other adjacent relationship and with the saw blades (1, 2) in an internally correct related disposition to each other.
(FR) Une paire de lames de scie comporte deux lames de scie (1, 2) disposées adjacentes l'une à l'autre et destinées à effectuer un trait de scie dans une pièce à usiner (5), conjointement et en coopération lors d'un mouvement de rotation s'effectuant dans des directions contrarotatives. Selon la présente invention, les dents (3, 4) des lames de scie (1, 2) présentent une inclinaison spécifique pour chaque lame (1, 2) au niveau de la partie tranchante des dents correspondantes (3, 4). Les dents (3, 4) d'une paire de lames de scie peuvent ainsi entrer en contact, à titre de première partie, avec une pièce à usiner, avec la partie de chaque dent (3, 4) la plus proche de la lame (1, 2) agissant conjointement, imprimant ainsi une force destinée à déplacer les lames (1, 2) l'une vers l'autre. Lors de l'ajustage des dents de scie (3, 4), on place les dents (3, 4) de chaque lame (1, 2) dans une direction latérale seulement, et dans une direction contraire au plan destiné à former un plan adjacent par rapport à la lame (1, 2) agissant conjointement. Les lames de scie (1, 2) qui forment une paire de lames de scie sont de préférence munies d'un organe destiné uniquement à faciliter la fixation des lames (1, 2) dans une relation adjacente l'une par rapport à l'autre, les lames (1, 2) étant placées l'une par rapport à l'autre selon une disposition relative correcte du point de vue de leur direction vers l'intérieur.
Designated States: AU, JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
EP0380498AU1988021205