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Upright piano action bushing processing method and device

A technology for upright pianos and action machines, applied in stringed instruments, bearing components, shafts and bearings, etc., can solve problems such as difficult to achieve and difficult to ensure long-term lubrication stability, and achieve flexibility without decreasing, avoiding smooth operation, Stress-reliable effect

Active Publication Date: 2016-03-02
宜昌三盈乐器制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is difficult for the action bushing in the prior art to ensure the stability of long-term lubrication, and it is difficult to achieve that the force of the shaft nail is still controlled within the technical requirements after one million vibrating tests

Method used

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  • Upright piano action bushing processing method and device
  • Upright piano action bushing processing method and device
  • Upright piano action bushing processing method and device

Examples

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Effect test

Embodiment Construction

[0035] Such as image 3 Among them, a bushing device for an upright piano action, including a shaft frame 1, a shaft nail hole is provided on the shaft frame 1, and a shaft nail 4 is installed in the shaft nail hole, and the shaft nail 4 and the inner wall of the shaft nail hole A bushing 2 is arranged between them, and the surface of the bushing 2 in contact with the shaft nail 4 is a graphite coating layer 21 , and the surface of the bushing 2 in contact with the shaft nail hole is a glue coating surface 22 .

[0036] A lead powder layer 3 is also provided between the bushing 2 and the shaft nail 4 .

[0037] The bushing closing position 23 of the bushing 2 is toward the side of the notch 11 of the shaft frame. This structure ensures that the stress structure of the bushing 2 is more reliable.

[0038] Such as Figure 1-7 Among them, a method for processing the above-mentioned upright piano action bushing device, comprising the following steps:

[0039] 1. The graphite c...

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Abstract

The invention provides a vertical type piano string striking machine bushing apparatus, which comprises a shaft bracket, and the shaft bracket is provided with a shaft nail aperture, and the shaft nail is installed in the shaft nail aperture, and a bushing is equipped between the shaft nail and the shaft nail aperture inner wall; the contact surface of the bushing and the shaft nail is a graphite coating layer, and the contact surface of the bushing and the shaft nail aperture is a glue coating surface. A lead powder layer is equipped between the bushing and the shaft nail. The invention also provides a method for processing the vertical type piano string striking machine bushing apparatus, which includes the following steps: coating lead powder at one side; coiling the bushing into a ring shape, and implanting the graphite coating layer as an inner ring into the shaft nail aperture of the shaft bracket; immersing the shaft bracket assembly into a mixed liquor of a silicone oil emulsion and a cocounut oil crystal soda, and disposing for 10-14 hours; cutting the bushing and punching, and then cutting the bushing for the second time; disposing for 5-9 days after the shaft nail is implanted; pulling out the shaft nail; thereby realizing processing the vertical type piano string striking machine bushing. After one million times of shocking and playing tests of the shaft bracket of the present invention, the tested shaft nail force is controlled within the technical requirement scope.

Description

technical field [0001] The invention relates to the field of piano accessories, in particular to a processing method and device for an upright piano action bushing. Background technique [0002] The shaft frame is the joint part in the action, and the hammer, linkage, and damper are all operated through the shaft nails in the shaft frame. Improving the quality of the shaft frame is a great guarantee for the quality of the action. The quality of the axle frame depends on the stability and lubrication of the bushing. It is especially important to improve the sensitivity of the shaft frame. [0003] The action bushing in the prior art is difficult to ensure the stability of long-term lubrication, and it is difficult to achieve that the force of the shaft nail is still controlled within the technical requirement range after one million vibration tests. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10C9/00G10C3/16F16C33/16
Inventor 吴天延
Owner 宜昌三盈乐器制造有限公司
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