The invention discloses a light-weight die for a high-precision large-sized antenna for radio astronomy and a manufacturing method thereof. The light-weight die consists of a plurality of die units, wherein each die unit comprises a die molding surface and a rigid structure used for supporting the die molding surface; each rigid structure comprises a steel frame and a plurality of steel diaphragms; each die molding surface comprises a molding surface square pipe layer, a glass fiber reinforced plastics layer and a resin layer; each resin layer adopts epoxy tooling board or machinable plastic pasting; a high-precision molding surface of each die unit is realized by machining; the airtightness of the die is realized by spraying gel coat on non-antenna areas of the resin layers; the die splicing is realized by center line positioning and high-precision adjustment; sealing grooves among the die units are filled and leveled up by adopting resin pasting; and the manufacturing of the high-precision large-sized antenna for radio astronomy is realized.

Light-weight die for high-precision large-sized antenna for radio astronomy and manufacturing method thereof

The invention relates to a pressure device and a laminating method, and relates to the technical field of air conditioners. The invention adopts the technical scheme that the pressure device comprisesa magnetic fluid structure and a magnetic field generating device, wherein the magnetic field generating device is used for generating a magnetic field; the magnetic fluid structure is used for applying pressure to a piece to be pressed under the effect of the magnetic field generated by the magnetic field generating device; and moreover, when the magnetic fluid structure is in contact with the piece to be pressed for applying pressure, the magnetic fluid structure is deformed to be a shape adaptive to the piece to be pressed. The laminating method comprises the step of applying pressure to the piece to be pressed by adopting the pressure device to enable the piece to be pressed to laminate and adhere. The pressure device is mainly used for applying flexible pressure to the pieces to be pressed such as panel bodies, wind boards and decorative sheets, and lamination and adhesion of the pieces to be pressed are realized, so that the problems that the pieces to be pressed are scratched in the laminating process and gaps are generated by non-uniform stress are solved.

Pressure device and laminating method

The invention discloses a high-precision antenna reflector processing method. Firstly, air inside a mould is evacuated by using a vacuum pump, and thus, negative pressure is formed inside the mould; then, through an absorption hole in the mould, a panel skin is absorbed on the mould, and the panel skin is tightly fit with the mould; and then, an adhesive is used for bonding a back rib frame and the panel skin as a whole. By using the filling performance of the adhesive, perfect fitting between the panel skin and the back rib frame is realized, the panel precision is ensured, and after the adhesive is cured, shaping of the antenna panel can be completed. Vacuum negative pressure is formed in the mould to absorb the panel skin, the panel skin can be quickly shaped, the curvature achieves the design requirements, the back rib frame is bonded on the panel skin, the shaping of the antenna panel can be completed after the adhesive is cured, the shaping precision is high, and the method of the invention can be applied to reflector antennas of various curvatures, various calibers and various forms.

High-precision antenna reflector processing method

The invention belongs to the technical field of radar antennas, and particularly provides an electrostatic figuration thin film reflecting surface splicing mold and an electrostatic figuration thin film reflecting surface splicing method The method comprises the following steps: firstly manufacturing a high-precision reflecting surface splicing mold using a vacuum adsorption principle, wherein the high-precision reflecting surface splicing mold is a thin film reflecting surface splicing system MRAS and consists of an upper parabolic surface, a lower sealing cover and an hexagon socket head cap screw; and then manufacturing preformed high-precision thin film reflecting surfaces with a certain focal-length-to-diameter ratio on this basis The electrostatic figuration thin film reflecting surface splicing mold is reliable in principle and easy and convenient to operate; the complete method for manufacturing large-aperture thin film reflecting surfaces, which comprises the following steps of reflecting surface mold designing, splicing, manufacturing and the like, is provided; by the method, a high-precision preformed paraboloid can be manufactured; and a technical support is provided for preparation of a principled sample machine

Electrostatic figuration thin film reflecting surface splicing mold and electrostatic figuration thin film reflecting surface splicing method

The invention relates to a mechanical material preparation mold. The mold comprises a seat body, supporting columns are arranged at four corners of the upper surface of the seat body correspondingly,damping devices are arranged inside the supporting columns, and first connecting plates are arranged at the upper ends of the supporting columns; a female mold is arranged on the upper surfaces of thefirst connecting plates, a plurality of evenly-distributed mounting holes I are formed in the female mold, and filling bodies matched with the mounting holes I are arranged in the mounting holes I; and second connecting plates are arranged at the lower ends of the filling bodies, and lifting devices are arranged below the second connecting plates. According to the mold, the female mold is small in thermal expansion coefficient, high in specific strength and light in weight, the surface machining precision is high, the overall structure is reasonable, the stability is good, the machining period of the mold is short, the machining economic cost is low, the stress is uniform during demolding, the operation is convenient, the damage is not easy to occur, labor is saved, working efficiency isimproved, practicability is high, and popularization is achieved.

Mechanical material preparation mold

The invention discloses a stamping-gluing composite forming method for a small antenna reflecting surface in the field of radar antenna manufacturing engineering. According to the stamping-gluing composite forming method, the antenna reflecting surface is formed through a stamping process, the periphery of a panel is grooved for releasing the interior pressure of the panel, the panel is placed on a die and completely bonded with the curved surface of the die by virtue of the negative pressure adsorption of a vacuum device, and an antenna back rib frame is glued and cured finally to form the high-accuracy antenna reflecting surface. The stamping-gluing composite forming method disclosed by the invention has the advantages of being high in accuracy, simple in machining process, low in manufacturing cost, capable of being produced in batches, and the like, as well as is especially suitable for batch manufacturing for small high-accuracy antenna reflecting surfaces.

Stamping-gluing composite forming method for small antenna reflecting surface

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Stamping-gluing composite forming method for small antenna reflecting surface