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Piano shaft frame needle threading machine and needle threading method

A shaft frame and needle threading technology, which is applied in stringed musical instruments, metal processing, instruments, etc., can solve the problems of manual arrangement of shaft frames, affecting assembly accuracy, and low degree of automation, so as to achieve uniform needle threading positions, improve production efficiency, and ensure The effect of precision

Active Publication Date: 2013-03-20
PEARL RIVER PIANO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Because the sizing needle is long, it is easy to bend during use, which causes the shaft hole diameter of the bushing to be inconsistent, which affects the manufacturing accuracy; in addition, the sizing needle needs to rotate while advancing during the hole passing process, causing wear after long-term use, which also causes the shaft Inconsistent shaft hole diameter of the lining
[0005] 2. Due to the large number of shaft

Method used

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  • Piano shaft frame needle threading machine and needle threading method
  • Piano shaft frame needle threading machine and needle threading method
  • Piano shaft frame needle threading machine and needle threading method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Referring to Figure 2, the piano shaft frame needle piercing machine of this embodiment mainly includes a feeding device, a working slide 8, a pushing device, a positioning device, a drilling device, a sizing needle distribution device, a needle firing device, and a control system. Among them, the feeding device It is arranged on the vibrating plate frame 2, and the pushing device, the positioning device, the drilling device, the sizing needle distribution device, the firing needle device and the control system are arranged on the workbench 3 of the frame 1.

[0052] See Figure 2~ Figure 5 The feeding device includes a vibrating plate 4 and a feeding slide 6 that transports the shaft frame 9 in the vibrating plate 4 to the working slide 8; wherein, the vibrating plate 4 is arranged on the vibrating plate frame 2, and the vibrating plate 4 There is a circling vibrating posture adjustment channel inside. Under the vibration of the vibration module, the pedestals 9 stacked di...

Embodiment 2

[0073] The difference between this embodiment and Embodiment 1 is:

[0074] The first air cylinder 10 of the longitudinal movement mechanism in the pushing device of Embodiment 1 is replaced with a linear movement mechanism composed of a first motor and a first screw transmission mechanism.

[0075] The second cylinder 16 in the force applying mechanism on the vertical indenter 18 of the first embodiment is replaced with a linear motion mechanism composed of a second motor and a second screw drive mechanism.

[0076] The third air cylinder 23 in the lateral sliding mechanism of Embodiment 1 is replaced with a linear motion mechanism composed of a third motor and a third screw transmission mechanism.

[0077] The fourth cylinder 27 in the lateral movement mechanism of the drilling device in Embodiment 1 is replaced with a linear movement mechanism composed of a fourth motor and a fourth screw drive mechanism.

[0078] The cross section of the needle feeding groove 28 is in a continuous z...

Embodiment 3

[0081] The difference between this embodiment and Embodiment 1 is:

[0082] Replace the first cylinder 10 of the longitudinal movement mechanism in the pushing device of Embodiment 1 with the first hydraulic cylinder;

[0083] The second cylinder 16 in the force applying mechanism on the vertical ram 18 of the embodiment 1 is replaced with a second hydraulic cylinder.

[0084] The third cylinder 23 in the lateral sliding mechanism of Embodiment 1 is replaced with a third hydraulic cylinder.

[0085] The fourth cylinder 27 in the lateral movement mechanism of the drilling device in Embodiment 1 is replaced with a fourth hydraulic cylinder.

[0086] The cross section of the needle feeding groove 8 is in a continuous wave shape with a tortuous shape from top to bottom.

[0087] Embodiments of this embodiment other than those described above can be implemented with reference to Embodiment 1.

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PUM

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Abstract

The invention discloses a piano shaft frame needle threading machine and a piano shaft bracket needle threading method which is realized by using the needle threading machine. The needle threading machine comprises a feeding device, a working slide track, a pushing device, a positioning device, a drilling device, a shaping needle distributing device, a needle striking device and a control system, wherein the feeding device comprises a vibration disc and a feeding slide track; the working slide track comprises a feeding part and a needle threading part; the pushing device comprises a push rod for pushing a shaft frame to the needle threading part from the feeding part, and a longitudinal moving mechanism which is connected with the push rod; the positioning device comprises a pressing head used for positioning and tightly pressing the shaft frame on the needle threading part, and a force exerting mechanism; the drilling device comprises a drill bit, a motor connected with the drill bit and a transverse sliding mechanism which enables the motor to move transversely; and the needle striking device comprises a needle striking rod and a transverse moving mechanism connected with the needle striking rod. When used for threading needles, the piano shaft frame needle threading machine has the advantages that apertures of shaft holes of a bushing are uniform, position precision of the shaft holes is high, and the production efficiency is greatly improved.

Description

Technical field [0001] The invention relates to a production equipment and a method for piano parts, in particular to a piano shaft frame needle threading machine and a needle threading method. Background technique [0002] Piano pedestal is the core component of piano-the key component that connects the various levers in the action machine (for example, the pedestal in an upright piano action includes the butt yoke, damper yoke, coupling yoke and top There are four types of shaft holders). The key to the smooth movement of the action parts lies in the quality of the shaft holders. See figure 1 The upper end of the piano pedestal 9 is U-shaped, and both sides of the U-shaped opening are provided with coaxial pedestal holes 9-1. The axis of the pedestal hole 9-1 is the axis of the pedestal 9 when it is working. Center of rotation. The shaft holder hole 9-1 needs to be provided with a bushing 9-2 made of felt (that is, a bushing). The main processing flow for setting the shaft bu...

Claims

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Application Information

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IPC IPC(8): G10C9/00B26F1/16
Inventor 梁志和李建宁廖勇梁国华黄耿志林鸣亚
Owner PEARL RIVER PIANO GROUP