Flexible Prestressing Fixtures for Shot Peening of Large Wall Panel Workpieces

Abstract

The invention provides a flexible prestressed clamp for peen forming of large-scale wallboard workpieces. The flexible prestressed clamp comprises a rigid framework used for supporting, an upward and downward extrusion module used for bending the wallboard workpieces, a lifting control module used for controlling the upward and downward extrusion module, an elastic pre-bending module used for controlling the bending shapes of the wallboard workpieces and horizontal guide rails, wherein the upward and downward extrusion module, the lifting control module and the elastic pre-bending module are mounted on the rigid framework; and the rigid framework is arranged on the horizontal guide rails and moves along the horizontal guide rails. The flexible prestressed clamp has the following beneficial effects: the prestressed clamp has extremely high flexibility and universality, and is suitable for implementing elastic pre-bending in various shapes on the wallboard workpieces of various sizes; the bending shapes of the wallboard workpieces can be well controlled; the elastic prestress application is uniform and controllable; clamping and pre-bending are both convenient and labor-saving; the center heights of the workpieces can be kept unchanged in the clamping and pre-bending process; and the positioning performance of the workpieces is extremely good.

Description

technical field

[0001] The invention relates to the field of tooling for mechanical manufacturing, in particular to a flexible prestressed fixture used for shot blasting of large-scale wallboard workpieces, and is mainly used in various shot-peening forming processes of large-scale wallboard and other workpieces. Background technique

[0002] In the field of modern aerospace, various types of aircraft require structural weight reduction while also putting forward higher requirements for overall mechanical properties. This requires the use of high-performance large-scale complex thin-walled structures to improve structural efficiency and service reliability. Among them, the large integral wall panel is a structural part that can effectively improve the performance and efficiency of the aircraft. It has outstanding advantages such as high structural efficiency, aerodynamic shape, and good airtightness. It has become an important way to reduce the weight of the aircraft structur...

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