EP 0453436 A3 19911030 - CUTTING DEVICE FOR A BAND SAW
Title (en)
CUTTING DEVICE FOR A BAND SAW
Publication
Application
Priority
- AT 87490 A 19900411
- AT 191990 A 19900921
Abstract (en)
[origin: EP0453436A2] A cutting device comprises a band-saw blade (1, 1'; 21, 22; 25, 26, 29) with a back area (4, 4'; 29, 34) and a front tooth area (2, 2'; 31, 33), the thickness of which is less than the band thickness in the back area (4, 4'; 34). The cross-section of the band-saw blade (1, 1'; 21, 22, 25, 26, 29) is designed to be symmetric with regard to the centre axis for a centre cut. Lying between the tooth area (2, 2') and the back area (4, 4'; 29, 34) is a transition area (3, 3'), with or without lateral concave flanks which lie within imaginary wedge surfaces. For the lateral cutting-off of boards from squared timber, the band-saw blade (21, 22, 25, 26, 29) has teeth (31, 33) which are bevelled only in one direction so that the teeth in the endless band-saw blade converge towards one another. In the cutting device, the teeth (31, 33) are directed towards the material to be cut, e.g. the squared timber (20). During the feed, a cut-off board (23, 24, 27, 28, 32) automatically runs laterally out of the feed path. The cross-sectional shape produced by grinding or rolling comprises a hard-alloy refinement (Stellite facing) which is applied by welding. The cut leads to the material to be cut being split up into two boards which run past the tooth flanks and in the transition area without contact. Furthermore, the cutting device can have guide wedges (12, 13, 30) following the band-saw blade. <IMAGE>
IPC 1-7
IPC 8 full level
B23D 61/12 (2006.01); B27B 31/08 (2006.01)
CPC (source: EP)
B23D 61/121 (2013.01); B27B 31/08 (2013.01)
Citation (search report)
- [X] US 2937413 A 19600524 - HOLLINGSWORTH JOHN D
- [X] US 3132677 A 19640512 - DUNN LYMAN D
- [A] BE 530412 A
- [A] GB 2173735 A 19861022 - AMADA CO LTD
- [A] US 3063310 A 19621113 - CONNOY EUGENE N
- [A] FR 2507512 A1 19821217 - VANINETTI ENRICO [IT]
- [A] US 4345499 A 19820824 - ROSS FRANK L
- [A] US 4195543 A 19800401 - SMITH GARTH L [CA], et al
- [A] DE 3433279 A1 19860320 - HONSBERG GMBH SONDERWERKZEUGMA [DE]
- [A] US 3771397 A 19731113 - SMITH L
Designated contracting state (EPC)
BE CH DE DK FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0453436 A2 19911023; EP 0453436 A3 19911030; CA 2040049 A1 19911012; FI 90213 B 19930930; FI 90213 C 19940110; FI 911740 A0 19910411; FI 911740 A 19911012; HU 911135 D0 19911028; HU T62224 A 19930428; PL 289812 A1 19911216
DOCDB simple family (application)
EP 91890074 A 19910411; CA 2040049 A 19910409; FI 911740 A 19910411; HU 113591 A 19910408; PL 28981291 A 19910410