Combined manufacturing method of large-curvature double-curvature high-precision reflecting panel

Abstract

The invention discloses a combined manufacturing method of a large-curvature double-curvature high-precision reflecting panel. The reflecting panel comprises three layers of aluminum plates, two layers of durable honeycomb cores and a room-temperature curing double-group modified epoxy adhesive for cementing, and the three layers of aluminum plates are respectively a working plate, a middle connecting plate and a back plate. The manufacturing method comprises the steps of three-dimensional modeling of the large-curvature double-curvature high-precision reflection panel, spatial geometric unfolding and positioning of the three-layer aluminum plate on a nail bed, laser cutting of an unfolded blank of the three-layer aluminum plate, calculation of the nail height and positioning of the three-layer aluminum plate on the high-precision nail bed. Laying of the three layers of aluminum plates and two layers of honeycombs layer by layer, and positioning of the sandwich plate on a milling machine platform, tool setting of a milling machine and final milling of the sandwich plate are main processes for manufacturing the large-curvature double-curvature high-precision reflecting panel. According to the method, the manufacturing problem of the large-curvature double-curvature reflecting panel is solved, and manufacturing of the reflecting panel which is large in curvature, high in precision, large in specific stiffness and light in weight and is suitable for terahertz antenna measurement can be achieved.

Description

technical field [0001] The present invention relates to a combined manufacturing method of a high-curvature double-curvature high-precision reflective panel, in particular to a high-curvature double-curvature continuous surface high-precision honeycomb sandwich structure reflective panel manufacturing process, which belongs to mechanical engineering / precision manufacturing field. Background technique [0002] With the rapid development of terahertz (THz) waves in the fields of radar detection, communication transmission, terahertz remote sensing, and non-destructive testing, the demand for high-gain antennas for transmitting and receiving terahertz waves is becoming more and more extensive. Antenna measurement technology puts forward higher requirements. In order to realize the terahertz antenna measurement technology, the operating frequency of the compact field needs to be above 100G, that is, the surface accuracy (RMS value, root mean square error) of the compact field r...

AI Technical Summary

Problems solved by technology

[0005] 1. The high-precision reflective panels manufactured in the past use precision machining equipment to directly process the surface of solid casting billets, but the cutting volume is large, the processing cost is high, the cycle is long, the panel weight is large, and the deformation caused by temperature and gravity affects the surface of the sandwich panel. The accuracy has a great influence, and the stability of the surface accuracy of the panel is difficult to guarantee

[0006] 2. The honeycomb sandwich structure is used to manufacture high-precision reflective panels. The three-layer aluminum plate adopts the slit stress release technology, but it is only suitable for the manufacture of small curvature reflective panels.

Therefore, inappropriate forming pressure can easily lead to uncontrollable surface accuracy of sandwich panels, and a processing technology plan is urgently needed to correct the surface accuracy of sandwich panels with curvature.

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