Piano string polishing apparatus, string winding machine and swing winding method thereof

Abstract

The invention relates to a piano string polishing apparatus. The piano string polishing apparatus comprises a base, a translation mechanism and a grinding head mechanism; the grinding head mechanism comprises two grinding heads and an opening-closing assembly; the two grinding heads are arranged in a face-to-face manner, a steel wire to be polished penetrates through between the two grinding heads, and the opening-closing assembly drives the two grinding heads to approach each other or to be away from each other; and the grinding head mechanism translates on the base by virtue of the translation mechanism, so that the steel wire is located between the two grinding heads or the steel wire to leave the two grinding heads. The invention also relates to a string winding machine and a string winding method thereof. By additionally arranging the piano string polishing apparatus, a copper wire is firstly polished and then wound. By adopting a pneumatic finger air cylinder to clamp the steel wire to substitute the downward pressing the steel wire by a steel file, so that the pressure for clamping the steel wire can be controlled by adjusting the air pressure, the depth of a ground steel wire can be effectively controlled, not only can the steel wire be uniformly ground, but also the steel wire can be prevented from being injured, a needed polishing effect is achieved, and the piano string polishing apparatus belongs to the technical field of piano processing machines.

Description

technical field [0001] The invention relates to a piano processing machine, in particular to a piano string grinding device, a string winding machine equipped with the device and a string winding method thereof. Background technique [0002] Existing piano strings do not grind the steel wire when the copper wire is wound on the steel wire, and the surface of the steel wire is very smooth, so that the copper wire cannot be tightly entangled when the copper wire is wound on the steel wire. Because the strings are stretched by force, there will be a gap between the copper wire and the steel wire. Due to the smooth surface of the steel wire, the friction force between the copper wire and the steel wire is not enough, which will cause the copper wire and the steel wire to loosen, which affects the piano. timbre. If the winding tension is increased when the copper wire is wound, the copper wire will be deformed, which will also affect the tone of the piano strings. [0003] In o...

AI Technical Summary

Problems solved by technology

[0002] Existing piano strings do not grind the steel wire when the copper wire is wound on the steel wire, and the surface of the steel wire is very smooth, so that the copper wire cannot be tightly entangled when the copper wire is wound on the steel wire. Because the strings are stretched by force, there will be a gap between the copper wire and the steel wire. Due to the smooth surface of the steel wire, the friction force between the copper wire and the steel wire is not enough, which will cause the copper wire and the steel wire to loosen, which affects the piano. timbre

If the winding tension is increased when the copper wire is wound, it will deform the copper wire and affect the tone of the piano strings

[0003] In order to solve the above problems, the prior art is to use a steel file to grind the steel wire. In this way, it is necessary to hold the steel file and press it on the rotating steel wire to grind the steel wire. The steel wire will jump during the rotation and winding process, so that The steel file cannot grind the steel wire when it jumps between the steel wires. This method is relatively backward, and the grinding effect is not good, and the uneven grinding will damage the steel wire.

[0004] There is also a steel wire with a polygonal cross section, so that when the copper wire is wound on this steel wire, the bending force between the copper wire and the polygonal steel wire is increased and it is not easy to loosen. The sound produced by the hammer hitting the wire is not good

[0005] There is no equipment for grinding piano strings in the prior art

Images