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93 records – page 2 of 10.

Coupe partielle mécanisée dans un peuplement feuillu tolérant en Nouvelle-Écosse

https://library.fpinnovations.ca/en/permalink/fpipub36435
Author
Meek, Philippe
Date
May 1995
Material Type
Research report
Field
Fibre Supply
Author
Meek, Philippe
Date
May 1995
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Trees
Timberjack
Felling head
Saws
Sawing
Productivity
Feller
Series Number
Communiqué technique ; Coupe partielle-CT-000003
Language
French
Abstract
Coupe partielle
Coupe progressive
Feuillus
Productivité
Coûts
NOUVELLE-ÉCOSSE
ABATTEUSE GROUPEUSE TIMBCO T-435
TETE D'ABATTAGE A SCIE QUADCO
DÉBARDEUR A GRAPPIN TIMBERJACK 480C
DÉBARDEUR A GRAPPIN TREE FARMER C7D
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Curve sawing and new technology: implementation benefits

https://library.fpinnovations.ca/en/permalink/fpipub38462
Author
Corneau, Yvon C.
Date
May 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Corneau, Yvon C.
Date
May 1991
Material Type
Research report
Physical Description
57 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Computer Optimized Bucking (COB)
Curve sawing
Simulation
Sawing
SAWSIM (Computer program)
Optimization
Log conversion
Logs
Series Number
3743K440
E-1336
Location
Ottawa, Ontario
Language
English
Abstract
In an effort to promote the adoption of manufacturing strategies that more closely match the Eastern resource supply, simulation work was conducted with SAWSIM to investigate the benefits of implementing innovative conversion technologies such as: computer optimized bucking (COB), curve sawing technology, and cant optimization technology.
Simulation results for COB clearly indicate that the implementation of computer optimized bucking generates significantly better volume and value recovery than achievable from operator derived bucking solutions.
Comparison of curve sawing and cant optimization simulation results show that both technologies have the potential to improve present efficiency levels by at least 10 percent.
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Curve sawing of Eastern SPF sawlogs phase 1: occurrence and severity of sweep and crook

https://library.fpinnovations.ca/en/permalink/fpipub38343
Author
Corneau, Yvon C.
Date
February 1989
Material Type
Research report
Field
Wood Manufacturing & Digitalization
£ /o 7 o. pdf CURVE SAWING OF EASTERN SPF SAWLOGS PHASE I OCCURRENCE AND SEVERITY OF SWEEP
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
Curve sawing
Defects
Pinus
Spruce
Spruce Pine Fir
SPF
Softwoods
Sawing
Logs
Canada
Series Number
3743K420
E-1090
Location
Ottawa, Ontario
Language
English
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Curve sawing technology for Canadian sawmills

https://library.fpinnovations.ca/en/permalink/fpipub5433
Author
Wang, S.J.
Munro, B.D.
Giles, D.R.
Wright, D.M.
Date
December 1989
Edition
36861
Material Type
Research report
Field
Wood Manufacturing & Digitalization
r , B.C. V6T 1X2 CURVE SAWING TECHNOLOGY FOR CANADIAN SAWMILLS by S . J . Wang, B.D. Munro
Author
Wang, S.J.
Munro, B.D.
Giles, D.R.
Wright, D.M.
Date
December 1989
Edition
36861
Material Type
Research report
Physical Description
33 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Sawing
Recovery
Series Number
W-709
Location
Vancouver, British Columbia
Language
English
Abstract
Summary included
Curve sawing
Recovery
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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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Deuxième comparaison des rendements au sciage d'un système de récolte par bois tronçonnés et d'un système par arbres entiers

https://library.fpinnovations.ca/en/permalink/fpipub36504
Author
Favreau, Jean
Corneau, Yvon C.
Date
August 1998
Material Type
Research report
Field
Fibre Supply
Author
Favreau, Jean
Corneau, Yvon C.
Date
August 1998
Material Type
Research report
Physical Description
6 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Systems
Saws
Sawing
Logging
Series Number
Fiche technique; FT-000272
Language
French
Abstract
FERIC a comparé les rendements, en volume et en valeur, des sciages produits à partir de deux systèmes de récolte, soit le système par arbres entiers et le système par bois tronçonnés. Pour réaliser cet objectif, un échantillon de 300 tiges a été récolté avec chaque système et suivi durant toutes les phases de transformation en forêt et à l'usine jusqu'aux produits finis (sciage et copeaux). Les résultats de l'étude indiquent que le système de récolte utlisé n'a pas eu d'impact significatif sur la qualité des billes destinés à la scierie ni sur le rendement au sciage. La précision des longueurs de billes n'a pas été un facteur permettant à un des systèmes de se démarquer de l'autre. Un objectif secondaire de l'étude était de vérifier l'impact de l'entreposage des billes et des tiges en longueur dans le parc à bois durant 6 mois, sur la valeur des sciages après séchage. Les résultats montrent que les deux systèmes n'ont pas donné des produits de qualité différente.
Rendement au sciage
SYSTEMES DE RÉCOLTE PAR BOIS TRONÇONNÉS
SYSTEMES DE RÉCOLTE PAR ARBRES ENTIERS
Comparaison
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Development and mill trials of an active guide system for bandsaws (final report)

https://library.fpinnovations.ca/en/permalink/fpipub37418
Author
Taylor, J.
White, J.
Date
October 1996
Material Type
Research report
Field
Wood Manufacturing & Digitalization
and the sawblade deviation, the reduction in cutting bias being accompanied by a similar reduction in sawing
Author
Taylor, J.
White, J.
Date
October 1996
Material Type
Research report
Physical Description
19 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
W-1330
Location
Vancouver, British Columbia
Language
English
Abstract
Research into the cutting characteristics of bandsaws has shown that the average cutting path of the sawblade is biased to one side of the ideal cut path. It has also been shown that a strong correlation exists between this cutting bias and sawblade deviation. This report is the second on the topic of bandsaw cutting bias and describes the development and mill trials of a PC based, self aligning bandsaw guide system. This system uses data from the sawblade, and programmable logic controllers controlling the bandmill, to monitor bandsaw cutting behaviour and align the guides to minimize the cutting bias and sawblade deviation. The system is shown to effectively reduce sawblade deviation and unscheduled blade changes and compensate for damaged or poorly prepared blades.
Saws - Band
Sawing - Blades
Cutting - Stresses
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Dimensions cibles pour la production d'équarris : théorie et hypothèses

https://library.fpinnovations.ca/en/permalink/fpipub39707
Author
Constantineau, Serge
Date
March 1989
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Constantineau, Serge
Date
March 1989
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Test methods
Simulation
Saw mills
Sawing
Series Number
3743K408
E-4807
Location
Ottawa, Ontario
Language
French
Abstract
Cants - Computer programs
Sawing - Cants - Computer simulation
Sawmills - Computer Programs
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Dispositif de lecture et d'affichage

https://library.fpinnovations.ca/en/permalink/fpipub41912
Author
Grondin, F.
Date
February 1998
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Grondin, F.
Date
February 1998
Material Type
Research report
Physical Description
19 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Simulation
Saw mills
Sawing
Location
Sainte-Foy, Québec
Language
French
Abstract
Curve sawing
Sawmill Simulation
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Dommages au gros bout des tiges dus à l'usage de scies circulaires à haute vitesse dans les opérations d'hiver

https://library.fpinnovations.ca/en/permalink/fpipub40405
Author
Andersson, Björn
Date
September 2003
Material Type
Research report
Field
Fibre Supply
Author
Andersson, Björn
Date
September 2003
Material Type
Research report
Physical Description
12 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Saws
Sawing
Feller
Advantage
Series Number
Avantage ; Vol. 4, No. 16
Language
French
Abstract
Dommages au gros bout des tiges
Abattage
Perte de fibre
Abatteuses-groupeuses
Scies circulaires à haute vitesse
Abstract
L'Institut canadien de recherches en génie forestier (FERIC) a examiné le niveau de dommages au gros bout des tiges à l'abattage par scies circulaires à haute vitesse, dans trois opérations de récolte d'hiver en Alberta et en Colombie-Britanique. L'emplacement et l'étendue de ces dommages ont été enregistrés pour chaque tige observée, et on a fait une projection de leur impact en termes de perte en volume des billes de sciage destinées à la fabrication de bois sciés. Les facteurs influençant l'endommagement des gros bouts sont discutés et des recommendations sont formulées en vue de réduire les pertes de bois.
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93 records – page 2 of 10.