Duplex sawing lumbering technology

A technology, a sawing technology, applied in the field of duplex sawing and lumber making, can solve the problems of complex lumber making equipment and few applications, and achieve the effect of increasing the proportion and broadening the prospect of production and application

Inactive Publication Date: 2009-12-23
NANJING FORESTRY UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Although these methods can improve the yield rate of quarter-sawn lumber, due to the complexity of the lumber-making equipment required, most of the obtained quarter-sawn lumber needs subsequent processing (such as gluing, edge trimming, etc.) to become a standard lumber, so There are few applications in actual production

Method used

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  • Duplex sawing lumbering technology
  • Duplex sawing lumbering technology
  • Duplex sawing lumbering technology

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with drawings and embodiments.

[0014] Taking a log with a diameter of 400mm as an example, only sawing a board of one specification, the scanning of the log is carried out on a medical CT. figure 1 It is a 3D log model obtained by applying 3D reconstruction technology after tomographic scanning of the log (the tree species is white ash, with a diameter of 400mm and a scanning length of 700mm).

[0015] figure 2 Saw the model for the ladder of the log. For the purpose of producing ordinary solid wood floor slabs, the cross-sectional specification of the slab is 100mm×22mm, and the sawing loss is set to 5mm. At the same time, in order to be suitable for the processing technology of trapezoidal downward sawing and circular sawing equipment, the maximum height of each sawing path shall not exceed the width of the board.

[0016] Duplex circular saw sawing process such as image 3 Shown: According to...

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Abstract

The invention relates to a duplex sawing lumbering technology. The new technology applies a scanning technology to obtain the exterior profile data of a log and establish an optimal sawing model, and can produce a stock board by a single sawing of the log. By adopting the technology, the out-turn percentage of quarter-sawn boards can be improved. The duplex sawing lumbering technology can utilize the original process layout of a workshop, and has the advantages of small occupation area, low cost, less investment, fast effect, easy implementation and the like.

Description

(1) Technical field [0001] The invention relates to a duplex sawing technology, which belongs to the field of log technology. (2) Background technology [0002] Due to the increasing scarcity of wood resources, especially precious wood, comprehensive and rational utilization of precious wood to increase the added value of its products is a hot topic in today's research. Compared with string-cut panels, radial panels are widely used in wood products such as furniture, floors, doors and windows because of their smaller dry shrinkage in the width direction, stable dimensions, less deformation and less cracking. [0003] In order to increase the ratio of quarter-cut boards in sawn timber, the three-side or four-side sawing method is generally used for logs with larger diameters; for logs with smaller diameters, some scholars have proposed special-shaped sawing methods. For example, in order to increase the width and output rate of sliced ​​veneer, Germany, Italy, Japan, etc., a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L5/00
Inventor 曹平祥丁建文王宝金郭晓磊
Owner NANJING FORESTRY UNIV
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