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Pre-stressing clamp for laser peening formation of workpiece

A prestress and workpiece technology, applied in the field of manufacturing tooling, can solve the problems of lack of flexibility, the rebound of the workpiece, the inability to accurately and continuously control the prestress and the elastic pre-deformation of the workpiece, and achieve the effect of improving the processing quality.

Inactive Publication Date: 2013-06-12
SHANGHAI AIRCRAFT MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A significant disadvantage of the above technology is that the prestress and the elastic pre-deformation of the workpiece cannot be accurately and continuously controlled, so that the workpiece will rebound when the clamp is released, and a set of clamps is limited to processing one kind of workpiece, which is not flexible.

Method used

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  • Pre-stressing clamp for laser peening formation of workpiece
  • Pre-stressing clamp for laser peening formation of workpiece

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form.

[0013] like figure 1 As shown, it shows a schematic structural view of the prestressed clamp according to the present invention.

[0014] Specifically, the prestressing fixture includes a frame 101 , supporting rollers 102 , pressing blocks 103 , electronic vernier calipers 104 and the like. The frame 101 is arranged substantially vertically. Two support rollers 102 are arranged substantially horizontally and are rotatably mounted on the frame 101, wherein the cross section of the support rollers 102 is cylindrical so that when the workpiece 300 is supported on the two support rollers 102, the support The rollers 102 are in line contact with the workpiece 300 . By tightening the scre...

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Abstract

The invention discloses a pre-stressing clamp, which comprises a framework, two support spherical columns, a hydraulic jack, a soft padding block, a hydraulic driving pump, an oil pressure gauge and a length measuring component; wherein the hydraulic jack is fixed onto the framework to enable a piston rod of the hydraulic jack to be basically and vertically positioned in the center between the two support spherical columns, so that a workpiece is pressed and abutted between the piston rod of the hydraulic jack and the two support spherical columns; the soft padding block is arranged between the piston rod of the hydraulic jack and the workpiece; the hydraulic driving pump is connected onto the hydraulic jack to drive the hydraulic jack; the oil pressure gauge is connected onto the hydraulic driving pump to display a driving oil pressure of the hydraulic driving pump; and the length measuring component is fixed onto the framework and is positioned in the center between the two support spherical columns to measure a vertical deformation amount of the workpiece under action of the hydraulic jack. When the pre-stressing clamp is used for carrying out laser peening formation on a metal board, controllable and continuously changeable pre-stressing force can be implemented on the workpiece, so that the workpiece is enabled to produce controllable pre-stressing force and a flexible pre-deformation amount before peening formation, and the processing quality of the workpiece after peening formation can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing tooling, in particular to a prestressed fixture used for laser shot peening of workpieces. Background technique [0002] Laser shot peening of sheet metal, as a metal forming process without die cold working, is especially suitable for the manufacture of integral wall panels of wings in the aviation industry. As we all know, laser peening of sheet metal under elastic prestress can effectively overcome the spherical phenomenon of laser peened workpieces in a free state, and the forming curvature of laser peened workpieces is also greatly improved. Prestressed laser peening is significantly better than free State laser peening forming. However, different laser peening samples require different curvatures, and have high requirements for the flexibility of preloading, that is, the ability of prestress to adapt to changes in workpieces. Therefore, prestressing of workpieces is one of the key tec...

Claims

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Application Information

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IPC IPC(8): B21D5/00B21D43/00
Inventor 陈洁姚振强王欣晶胡永祥徐正松李昊
Owner SHANGHAI AIRCRAFT MFG
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