SU1357194A1 - Method of working surfaces of parts made of wood - Google Patents

Abstract

The invention relates to woodworking industry and can be used in the final surface treatment of wood materials before applying paint and varnish coatings. The purpose of the invention is to increase the quality of processing by removing the cut wood fibers from the previous treatment. Wood surface treatment is carried out using a cylindrical tool. We take bulk nonwoven fibers with a length of at least 60 mm as the material for the working surface. The cut fibers remaining from the previous treatment are completely removed, provided that the processing is carried out with a pressing force (P) of the tool that satisfies the equality / (0.1-0.25) Q, where Q is the breaking load of the material along its length , and with a fiber thickness of 0.025-0.030 mm. 1 tab. (G with SP from 4

Description

The invention relates to the machining of wood.

The purpose of the invention is to improve the quality of processing before applying paintwork.

. The method is carried out as follows.

A cylindrical shaped tool is taken, the working surface of which has a polyvinyl acetate dispersion treated with a bulk non-woven fiber of at least 60 mm length and 0.025-0.030 mm thickness, while the force P, which is used when contacting the tool and the workpiece, is selected from Conditions P (0.1-0.25) Q, where Q is the discontinuous load of the material along its length.

The panel details of the cabinet-folding furniture “Claudi of 670X450 mm in size are subjected to processing, the mahogany and oak are faced on the front side with natural valuable sponge, and the beech and birch, respectively, on the back side.

Lavsan fibers (polyester 100% or a mixture of polyester 70% and polyacrylonitrile 30%) with a length of 60-70 mm and a thickness of 0.025- 0.030 mm are treated with an acronym of the 230 D grade or a polyvinyl acetate dispersion.

The obtained bulk non-woven material is formed in the form of a strip (tape). Make the tool. For this appropriate size, a piece of the said tape is wound onto a rod until a shaft is formed and strengthened.

During processing, the shaft is brought into contact with the surface of the moving shield, and the pressing force is chosen in

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thanks to the tool, the working part of which is made of bulk nonwoven fabric based on lavsan and the discovered relationship between the wood species and the pressing force of the tool to the surface, and the strength of the material along its length.

It was also established that it is most advisable to use a fiber length of at least 60 mm, since a reduction in length leads to combing of fibers from the total mass.

The thickness of the fibers should not exceed the specified limits, since a decrease in thickness leads to a break of the fiber thread, and a larger diameter does not allow the fibers to hook on the surface of the wood, i.e., lift them and remove them.

At 1 Q, the fibers practically do not rise, i.e. more than 90% of the shield area is covered with fibers that form hairiness; at 25Q, combing out of the total mass begins.

It has also been established that large values of the clamping forces should be set when processing surfaces of hard rock.

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Claims (1)

Invention Formula A method of treating the surface of wood products, in which the process is carried out using a cylindrical tool, which is brought into contact with the product being processed with relative movement of it and an instrument, characterized in that, in order to improve the quality of processing by removing the cut wood fibers from the preceding treatment, as the material of the tools required is within the range of 0.1-0.25 from the burst 35 tons, the treated polyvinyl acetate is taken dispersion bulk non-woven fiber with a length of not less than 60 mm and a thickness of 0.25–0.030 mm; breaking load of fiber material along its length. load nonwoven material along its length. The clamping force is controlled using, for example, a dynamometer, and the quality of the surface is visually using a magnifying glass. The data are summarized in the table. As can be seen from the table, the surface quality has improved due to the removal of lint 40 thanks to the tool, the working part of which is made of bulk nonwoven fabric based on lavsan and the discovered relationship between the wood species and the pressing force of the tool to the surface, and the strength of the material along its length. It was also established that it is most advisable to use a fiber length of at least 60 mm, since a reduction in length leads to combing of fibers from the total mass. The thickness of the fibers should not exceed the specified limits, since a decrease in thickness leads to a break of the fiber thread, and a larger diameter does not allow the fibers to hook on the surface of the wood, i.e., lift them and remove them. At 1 Q, the fibers practically do not rise, i.e. more than 90% of the shield area is covered with fibers that form hairiness; at 25Q, combing out of the total mass begins. It has also been established that large values of the clamping forces should be set when processing surfaces of hard rock. 25 Invention Formula A method of treating the surface of wood products, in which the process is carried out using a cylindrical tool, which is brought into contact with the product to be processed with relative movement of it and an instrument, characterized in that, in order to improve the quality of processing by removing the cut wood fibers from the preceding treatment, as a material tool 00 00 sg about “And and to k la E OK oyeo OO Kzh OH p.o, osh mi " P) " (U s U oo mi o (u etc, JSC) "" CN G aIf SLNO) and e- ,, river ooi OOE-EME-OO n a WITH ST. 3 P but one about n "W o p O S L s oa oo t-x about Ift osh R. oo ms " in th S to s; " nJ to Ltd (ABOUT about Yu . h se co a) P, o y