A device and method for detecting the flatness of piano white keys

Abstract

The invention relates to a detection device and method for installation flatness of piano white keys. The detection device comprises a piano supporting gantry, a piano positioning clamp, and a visualdetection system, after the piano is clamped, firstly the installation height of a first white key at the left side of a keyboard is manually adjusted, and then a standard reference strip is placed onthe keyboard for obtaining the size of a gap between each of all white keys and the standard reference strip through a visual detection system, and the gap sizes are compared with the gap size of thefirst preset white key on the left side for obtaining data of the installation flatness of other white keys. According to the detection device and method for installation flatness of piano white keys, a visual inspection camera and the positioning fixture are integrally designed, so that the uniformity of relative distances between the camera and all the white keys is ensured when a same frame piano is detected, the influence generated due to that the positions of the piano relative to left, right, front and rear positions of the piano supporting gantry are not repeated is small, clamping isconvenient, detection results are more reliable, and efficiency is higher.

Description

Technical field [0001] The invention patent relates to a device and method for detecting the flatness of the installation of the white keys of a piano, and relates to the field of installation detection. Background technique [0002] The flatness of the piano key installation, that is, the height difference between the same kind of keys, will directly affect the player's feel and the tone produced. It is one of the main factors that directly affect the quality of the piano. Before the piano leaves the factory, or the piano is used After a period of time, the piano needs to be adjusted, and the main content of the adjustment also includes the correction of the flatness of the installation of the keys. For a high-quality piano, the flatness error between similar keys should be limited to the micrometer range (for example, 50 micrometers). Such stringent requirements have brought challenges to the flatness detection during key installation. [0003] At present, piano manufacturers ge...

AI Technical Summary

Problems solved by technology

For a high-quality piano, the flatness error between keys of the same type should be limited to within the range of microns (for example, 50 microns). Such stringent requirements pose a challenge to the flatness detection during key installation.

[0003] At present, piano manufacturers generally observe and estimate the flatness of the key installation with the naked eye of the workers and make adjustments by trial and error. Generally, there are 52 white keys in a piano. Manual detection and adjustment of each key is labor-intensive and inefficient, and the results are somewhat random. and empirical, consistency and precision are difficult to guarantee

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