Method for repairing defects on wood block or board

Abstract

The invention relates to a method for cutting and mending defects in timber square stocks and sheet materials. The method is realized according to the following seven steps: (1) taking a dry square stock and a sheet material with lumpy defects as cutting and mending objects; (2) selecting a drill bit with the width approximating to the surface width and the diameter of a punched lumpy defect to punch a hole; (3) positioning the drill bit in the center of the lumpy defect with the positioning angle in accord with the trend of the lumpy defect; (4) adopting a common drill press to carry out drilling and realize rough removal of the defect; (5) using a milling machine to carry out tapered milling along the original drilling track, thereby realizing finished removal of the defect; (6) prefabricating and matching of a mending block, in which, a long round prefabricated rod with even transition from thick to thin is made and cut into corresponding sections, namely the mending blocks, according to the depth, angle and diameter of a drilled hole, and the mending blocks are made as similar as possible to the color and grain of mended timber; and (7) glue spreading and pressed mending. Whenadopted, the method can realize fine cutting and mending, firm combination and unobvious mending mark of lumpy defects in the timber square stocks and the sheet materials, regardless of size, depth and trend; therefore, the method is propitious to improve timber grade and utilization rate.

Description

technical field [0001] The invention relates to a wood processing method, which is a method for digging and repairing defects of a square material or a board. Background technique [0002] During the growth period of the trees, branches will continue to grow, and there will be insect holes and holes pecked by woodpeckers, which will make the knots, wormholes and pecking holes fully exposed after felling and sawing into squares or panels, affecting the grade of wood. In order to make up for the above defects and improve the grade of wood, the digging and filling method is effective. CN2043170 announced Xu Yishan's "portable veneer digging and repairing machine", and CN2427311 announced Zhang Yinqing's "single board digging machine", both of which have made beneficial technical contributions to the defect digging and mending of veneer. The former uses the milling and cutting method for digging and mending, while the latter uses the punching method to remove defects and obtain...

AI Technical Summary

Problems solved by technology

The former uses the milling and cutting method for digging and mending, while the latter uses the stamping method to remove defects and obtain patches for mending. Both machines can only take veneer as the mending object, and cannot be used for the mending of square materials and sheets.

CN2820488 announces a kind of finger-joint wood patching machine, the finger-joint tenon is processed by the attached machine, the main machine mills out the finger-joint groove with a milling cutter, and is bonded and subsidized each other. The finger-joint tenon is thick in the middle and thin on both sides. The groove is correspondingly deep in the middle and shallow on both sides. This fixed mode cannot be used to dig out the defects of knots, wormholes, and peck holes that penetrate the entire thickness of the beam or sheet.