A three-dimensional curved surface stretching machine

Abstract

The invention discloses a three-dimensional curved surface stretching machine. The three-dimensional curved surface stretching machine comprises a push-up device, a stretching device, clamping devices, an electric control system and a hydraulic control system. The push-up device comprises a base, an upper platform and three push-up oil cylinders disposed in parallel between the base and the upperplatform from left to right in sequence. The stretching device includes four sets of stretching mechanisms, and the four sets of stretching mechanisms are separately disposed at the front left position, the rear left position, the front right position and the rear right position above the upper platform, and the clamping devices are correspondingly arranged between the two sets of stretching mechanisms at the front left and rear left positions and between the two sets of stretching mechanisms at the front right and rear right positions. The three-dimensional curved surface stretching machine is a stretch forming device for a reflector panel in the manufacture of a radar radio telescope. The three-dimensional curved surface stretching machine can conveniently adjust the curvature of the panel according to the needs before the stretch forming process, and increases the precision of the panel during stretching and does not generate a pull-off phenomenon.

Description

technical field [0001] The invention relates to a curved surface stretching device, in particular to a three-dimensional curved surface stretching machine. Background technique [0002] Stretch forming is one of the main forming methods of three-dimensional curved surface thin-skinned components, such as the processing of skin parts commonly used in aircraft manufacturing, such as aircraft fuselage, wings and fairings, and in the manufacture of radar radio telescopes. Forming of reflective panels, etc. [0003] The forming quality of the reflective panel plays a vital role in the precision and sensitivity of the radar radio telescope. Therefore, the selection of suitable and advanced drawing equipment in the drawing process has a great influence on the forming quality, and it is the key equipment in this manufacturing field. At present, advanced CNC drawing equipment is mainly concentrated in countries such as the United States and France, and is also restricted by the impo...

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Problems solved by technology

[0003] The forming quality of the reflective panel plays a vital role in the precision and sensitivity of the radar radio telescope. Therefore, the selection of suitable and advanced drawing equipment in the drawing process has a great influence on the forming quality, and it is the key equipment in this manufacturing field. At present, advanced CNC drawing equipment is mainly concentrated in countries such as the United States and France, and is also restricted by the import of high-tech and high-end products, and the price is expensive.

After decades of development in domestic drawing equipment technology, its design and manufacturing level have made great progress, but the drawing forming equipment for reflective panels in the manufacture of radar radio telescopes has not.

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