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Self-locking nut anchoring force opening shrinking method and device

A self-locking nut and fixed force technology, applied in the direction of nuts, threaded fasteners, connecting components, etc., can solve problems such as difference in locking force and unqualified locking data, so as to improve stability, improve qualification rate, avoid Effect of Clamping Force Deviation

Inactive Publication Date: 2016-03-30
GUIZHOU HANGRUI AVIATION PRECISION PARTS MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is: during the processing of the self-locking nut, due to the inconsistent deformation and wall thickness, there is a difference in the final locking force, and even the technical problem that the locking data is unqualified

Method used

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  • Self-locking nut anchoring force opening shrinking method and device
  • Self-locking nut anchoring force opening shrinking method and device
  • Self-locking nut anchoring force opening shrinking method and device

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. But it is not used as any limitation basis for the present invention.

[0019] A method for closing a self-locking nut with fixed force. The self-locking nut 8 obtains a fixed closing depth under the action of a limit block 6 on a closing device; The force value signal of 1 is transmitted to the controller 2. When the force value is the same as the set force value, the controller 2 stops the closing device and continues to apply force to the self-locking nut 8. At this time, the self-locking nut 8 is at the same Substantially the same deformation resistance is produced under compression, and since this deformation resistance is the source providing the locking force, a fixed deformation resistance results in substantially the same locking force.

[0020] A self-locking nut fixed force closing device, which is refitted from a thread rolling mach...

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Abstract

The invention provides a self-locking nut anchoring force opening shrinking method and device. The fixed opening shrinking depth of a self-locking nut on opening shrinking equipment is obtained under the effect of a limiting block. A force value sensor is arranged on an ejection rod on an opening shrinking tool. Force value signals of the force value sensor are transmitted to a controller. When the force value is the same as a set force value, the controller stops the opening shrinking equipment from continuously applying force to the self-locking nut, at this moment, the self-locking nut generates basically the same deformation resistance under the same pressure, and as the deformation resistance is a source for providing locking force, the deformation resistance is fixed so that basically the same locking force is obtained. The device is transformed from a thread roller and comprises the force value sensor and the controller. The force value sensor is arranged on one side of a lower opening shrinking block and the controller is arranged on the thread roller. By the adoption of the method and device, the principle is simple, the stability of the locking performance of the self-locking nut is improved, the percent of pass of products is increased, clamping force and locking data deviation can be avoided, and the locking force provided through the deformation resistance is more even and more identical.

Description

technical field [0001] The invention relates to a method and a device for closing a self-locking nut with fixed force, and belongs to the technical field of mechanical processing. Background technique [0002] In the mechanical processing industry, for standard self-locking nuts widely used in aerospace, shipbuilding and other industries, the processing specifications are large, the quantity is large, and the requirements are high. The round bolt directly affects the locking performance of the product through its closing size. The deformation of the original product's closing size is 0.3mm~0.5mm, and the closing length h is 1.0mm~3.0mm. The product deformation is controlled by controlling the closing size, and the clamping force is controlled by deformation to provide locking performance. Due to the slight difference in the external dimensions of the product during processing, the wall thickness will also be different. In the case of relatively fixed external dimensions aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D53/24B21D37/10
CPCB21D53/24B21D37/10
Inventor 喻守直
Owner GUIZHOU HANGRUI AVIATION PRECISION PARTS MFG
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