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93 records – page 1 of 10.

Determination of methods for increasing both yield and product value when converting low grade hardwoods to solid products

https://library.fpinnovations.ca/en/permalink/fpipub38525
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
each bolt for simulated sawing. The optimum bolt values were obtained by "computer sawing" the bolt
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Yield
Value added
Sawing
Processing
Patterns
Hardwoods
Location
Ottawa, Ontario
Language
English
Abstract
Four-foot hard maple bolts, ranging in diameter from 6 to 16 inches, were produced from pulp wood and sawlogs. The bolts were live-sawn into 1-inch boards to identify the coordinates of each board defect in order to mathematically reconstruct each bolt for simulated sawing. The optimum bolt values were obtained by "computer sawing" the bolt models several times into dimension stock, squares or pallet stock using three sawing patterns; live, around and cant sawing. In the simulated sawing of the actual and theoretical bolts, live sawing consistently resulted in the highest product value. The only exception was for bolts containing a large amount of discoloured wood. In these cases, around and cant sawing performed better than live sawing. In general, liver sawing produced the highest product value for the following reasons; the production of wider boards allows a greater resawing flexibility, fewer saw cuts with less kerf loss and the production of fewer slabs. In-plant studies were conducted to determine the effect of the sawing pattern on productivity. Live sawing increased productivity by 18% for small diameter bolts and up to 30% for larger diameter bolts over the other sawing patterns. While multi-pass systerms may be suitable for the larger, higher quality bolts, it is doubtful that such a system would be viable processing small diameter material down to 6 inches. In processing smaller diameter bolts, it is necessary to have a single-pass system with high productivity to offset the lower quality and value of this material.
Lumber Processing
Hardwoods
Yield
Value
Dimension stock
Sawing Patterns
Defect detection
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Rapport d'etape : tranchage et fendage controle du bardeau de cedre

https://library.fpinnovations.ca/en/permalink/fpipub38583
Contributor
Le ministere de l'energie et des resources du Quebec
Forintek Canada Corp.
Date
January 1982
Material Type
Research report
Field
Sustainable Construction
Contributor
Le ministere de l'energie et des resources du Quebec
Forintek Canada Corp.
Date
January 1982
Material Type
Research report
Physical Description
19 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Sawing
Process control
Series Number
E-1692
Location
Ottawa, Ontario
Language
French
Abstract
La fabrication du bardeau se fait generalement avec des scies circularies dont le trait peut varier entre 3/64 et 5/64 pouce environ. Pour un trait de 1/16 de pouce et des bardeaux dont le bout epais est 3/8 pouce et le bout mince 1/8 pouce, ceci represente une perte en sciure de 25% de l'epaisseur du bardeau, ou de 20% de matiere ligneuse utilisee. Si le bardeau pouvait etre fabrique sans perte en sciure, par tranchage ou fendage controle par exemple, on pourrait produire la meme quantite de bardeaux avec 20% de moins de matiere ligneuse. Le Ministere de l'Energie et des Ressources du Quebec s'interesse depuis quelque temps a cette possibilite. Il a recemment confie a Forintek Canada Corp. un contrat de recherche a cette fin. Le present document est le premier rapport d'etape a ce sujet.
Cedar Lumber - Process Control
Sawing accuracy
Lumber Slicing
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Procedure to accurately determine the minimum side clearance for wood cutting saws

https://library.fpinnovations.ca/en/permalink/fpipub5467
Author
Kirbach, E.
Stacey, Michael J.
Date
February 1985
Edition
37017
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Kirbach, E.
Stacey, Michael J.
Date
February 1985
Edition
37017
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Saws
Kerf
Sawing
Recovery
Series Number
CFS Contract 02-40-12-019
W-223
Location
Vancouver, British Columbia
Language
English
Abstract
Recovery
Sawing - Kerf
Saws - Resaws
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Processing options for small diameter hardwood logs

https://library.fpinnovations.ca/en/permalink/fpipub38039
Author
Capstick, D.E.
Date
March 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Capstick, D.E.
Date
March 1985
Material Type
Research report
Physical Description
56 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Utilization
Small logs
Saw mills
Equipment
Sawing
Logs
Series Number
CFS/DSS project no 36/84-85
40-12-201
E-116
Location
Ottawa, Ontario
Language
English
Abstract
Sawmills - Equipment and Supplies
Small Logs - Utilization
Sawing - Small logs
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Sawing frozen and unfrozen wood with various gullet designs

https://library.fpinnovations.ca/en/permalink/fpipub5482
Author
Kirbach, E.
Stacey, Michael J.
Date
November 1985
Edition
37125
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Kirbach, E.
Stacey, Michael J.
Date
November 1985
Edition
37125
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Sawing
Series Number
W-356
Location
Vancouver, British Columbia
Language
English
Abstract
Frozen wood
Sawing
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Sawing frozen and unfrozen wood with various gullet designs

https://library.fpinnovations.ca/en/permalink/fpipub5483
Author
Kirbach, E.
Stacey, Michael J.
Date
November 1985
Edition
37126
Material Type
Research report
Field
Wood Manufacturing & Digitalization
SAWING FROZEN AND UNFROZEN WOOD WITH VARIOUS GULLET DESIGNS by E. Kirbach and M. Stacey
Author
Kirbach, E.
Stacey, Michael J.
Date
November 1985
Edition
37126
Material Type
Research report
Physical Description
10 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Sawing
Series Number
W-358
Location
Vancouver, British Columbia
Language
English
Abstract
Sawing
Frozen wood
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Dynamic behaviour of saws and sawing systems : cutting characteristics of bandsaws

https://library.fpinnovations.ca/en/permalink/fpipub37194
Author
Taylor, J.
Hutton, S.G.
Date
March 1987
Material Type
Research report
Field
Wood Manufacturing & Digitalization
AND SAWING SYSTEMS: CUTTING CHARACTERISTICS OF BANDSAWS by J. Taylor S.G. Hutton Research Scientist
Author
Taylor, J.
Hutton, S.G.
Date
March 1987
Material Type
Research report
Physical Description
35 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Stresses
Band saws
Saw bands
Saws
Bands
Blades
Sawing
Series Number
CFS No. 42;02-12-15-022
W-491
Location
Vancouver, British Columbia
Language
English
Abstract
Saws - Band
Sawing - Blades
Cutting - Stresses
Documents
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Target sizes for cant production: theory and assumptions

https://library.fpinnovations.ca/en/permalink/fpipub38301
Author
Constantineau, Serge
Date
March 1988
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Constantineau, Serge
Date
March 1988
Material Type
Research report
Physical Description
5 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Simulation
Saw mills
Sawing
Series Number
3743K408
E-993
Location
Ottawa, Ontario
Language
English
Abstract
Cants - Computer programs
Sawing - Cants - Computer simulation
Sawmills - Computer Programs
Documents
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Validation of mathematical model for target size cants before resawing

https://library.fpinnovations.ca/en/permalink/fpipub38302
Author
Constantineau, Serge
Date
November 1988
Material Type
Research report
Field
Wood Manufacturing & Digitalization
1 indicate that our size reduction objectives were met. The sawing precision was also calculated
Author
Constantineau, Serge
Date
November 1988
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Simulation
Saw mills
Sawing
Series Number
3743K421
E-994
Location
Ottawa, Ontario
Language
English
Abstract
Cants - Computer programs
Sawing - Cants - Computer simulation
Sawmills - Computer Programs
Documents
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Sciage suivant la coubure des billes de EPS de l'est : Phase 1 : frequence et gravite de la courbure et du coude

https://library.fpinnovations.ca/en/permalink/fpipub38579
Author
Corneau, Yvon C.
Date
February 1989
Material Type
Research report
Field
Wood Manufacturing & Digitalization
la courbure. 13 8.0 REFERENCES 1. Anonyme, The concept and mechanics of "Sawing Round the Curve
Author
Corneau, Yvon C.
Date
February 1989
Material Type
Research report
Physical Description
17 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Softwoods
Sawing
Recovery
Series Number
E-1601
Location
Ottawa, Ontario
Language
French
Abstract
Nous avons mesure pres de 4 000 billes de sciage de EPS (epinette, pin, sapin) a sept differentes scieries de l'Ontarion et du Quebec. Ces billes provenaient des cours a bois afin de nous permettre de determiner les differents diametres transformes par les scieries sans considerer les caracteristiques externes des billes.
Lumber recovery
Curve sawing
Sweep
Softwood
Documents
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93 records – page 1 of 10.