Method for manufacturing soundboard of piano

Abstract

The invention relates to a method for manufacturing a soundboard of a piano. The method comprises the following steps: firstly, dividing boards with different annual ring densities into five classes; secondly, transversely splicing a plurality of boards with the same density into a large board, and arranging the large boards according to the annual ring densities in the same way; and finally, splicing into a whole board, and then cutting into required soundboard shape. According to the method, the boards with different densities are distinguished and are reasonably arranged when being spliced, so that the densities of various parts of the whole soundboard are gradually increased or reduced, the density difference between the adjacent boards is reduced, the destructive effect generated by internal stress of the soundboard due to climatic change is overcome, and the vibration performance of the soundboard is improved, thereby increasing the tone quality of the piano.

Description

technical field [0001] The invention belongs to the technical field of piano soundboards, in particular to a method for making a piano soundboard. Background technique [0002] The soundboard in the piano is the key component for the piano to produce a beautiful sound. In the prior art, the soundboard uses several plates to splice, but the arrangement and order of the plates are not arranged reasonably. Different materials have different effects on the sound. Materials with different annual ring widths are arranged in disorder, and the density of each part of the whole soundboard is chaotic and disorderly, and the effect on the sound is also irregular. In the prior art, in order to ensure the quality of the soundboard and overcome the above-mentioned defects of the wood, it is necessary to use a board with a similar density. In the manufacture of high-end pianos, there are extremely high requirements for the density of the board and the difference between the boards. , not ...

AI Technical Summary

Problems solved by technology

[0002] The soundboard in the piano is the key component for the piano to produce a beautiful sound. In the prior art, the soundboard uses several plates to splice, but the arrangement and order of the plates are not arranged reasonably. Different materials have different effects on the sound. Materials with different annual ring widths are arranged in disorder, and the density of each part of the whole soundboard is chaotic and disorderly, and the effect on the sound is also irregular.

In the prior art, in order to ensure the quality of the soundboard and overcome the above-mentioned defects of the wood, it is necessary to use a board with a similar density. In the manufacture of high-end pianos, there are extremely high requirements for the density of the board and the difference between the boards. , not only requires the board to be dense, but even requires each board to meet the strict requirements of "same" density, which results in high manufacturing costs and waste of raw materials

[0003] At present, in the manufacture of pianos, plates with an average annual ring width of no more than 4 mm are usually selected for direct splicing. Due to the large difference between the plates, the soundboard is easily deformed due to the different water absorption under different temperature and humidity conditions, such as Two pieces of material with a large difference in density are spliced ​​together. Due to different deformations in hot and humid weather, one of the materials will bulge compared to the other, which will also lead to poor sound quality.

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