Manufacturing process and equipment for hypernormal-size conformal curved surface reflecting plate
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A technology of curved surface reflection and manufacturing process, applied in other manufacturing equipment/tools, manufacturing tools, etc., can solve the problems of difficult to guarantee dimensional accuracy, difficult conformal reflector, long processing and manufacturing length, etc., achieving good versatility and saving. Material cost, weight reduction effect
Active Publication Date: 2022-04-29
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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[0004] The technical problem to be solved by the present invention is how to solve the difficulty of processing and manufacturing conformal reflectors with long length and lar
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[0068] Example 1
[0069] such as Figure 1 As shown in the figure, 7050 high-strength aluminum plate is used as the raw material for the processing of segmented reflection plate, and the frame allowance is reserved on both sides of the part as the clamping tool and positioning benchmark. After low-temperature heat treatment, five-axis numerical control rough finishing and stress relief by aging, the part is manufactured.
[0070] such as 1 to 6 Shown, Front reflector 1, front reflector connecting and mounting hole 11, front reflector connecting and positioning hole 12, rear reflector 2, rear reflector connecting and mounting hole 21, rear reflector connecting and positioning hole 22, conformal assembly tooling 3, tooling bottom plate 31, tooling equidistantly spaced studs 32, stud fixing diagonal brace 33, reflector positioning pin 34, conformal tooling pressing rod 35, pressing beam 351, pressing connecting rod 352, etc. PTFE compression head 354, compression nut 355, connecting ...
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[0078] Example 2
[0079] such as Figure 7As shown in Figure 2, a manufacturing process of conformal curved reflector with extraordinary size can be processed, including conformal reflector of unmanned aircraft fuselage, etc. The process includes:
[0080] S1, after performing segmented numerical control processing on the conformal reflecting plate, the conformal reflecting plate is realized by adopting the method of integral riveting connection with conformal tooling;
[0081] S2, designing the conformal reflector in combination with the specification of pre-stretched 7-series aviation aluminum, wherein the segmented reflector adopts five-axis numerical control machining with the machining allowance around the raw materials as the clamping tire mold, combines rough machining to remove the main raw material allowance and finish machining to ensure the accuracy of the reflector, and adopts natural aging to eliminate the machining stress according to the characteristics of 7-series ...
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Abstract
The invention provides a manufacturing process and equipment for a hyperconventional-size conformal curved surface reflecting plate. The manufacturing process comprises the following steps of: performing segmented numerical control processing on the conformal reflecting plate, and integrally riveting the conformal reflecting plate by using a conformal tool; designing segmented reflecting plates of the conformal reflecting plate according to the specification data of the pre-stretched material, and processing the conformal reflecting plate in a segmented manner by using five-axis numerical control processing, rough and fine processing and natural aging processes to obtain segmented reflecting plates; using a conformal assembly tool conformal with the conformal reflecting plate to rivet the segmented part of the segmented reflecting plate so as to assemble the conformal reflecting plate; carrying out low-temperature destressing by utilizing a preset temperature condition and an aging condition so as to eliminate the assembly stress of the conformal reflecting plate; and the surface profile tolerance and the dimensional accuracy of the conformal reflecting plate are monitored by using a three-coordinate detection and photogrammetry method. The technical problem that processing of a large-curvature-feature conformal reflecting plate, the profile tolerance of the reflecting plate, the size precision control of installation positions such as a connector and the like are large in difficulty is solved.
Description
technical field [0001] The invention relates to a process of numerically controlled processing and riveting of a conformal curved metal panel of an unmanned aerial vehicle, in particular to a process and equipment for manufacturing a conformal curved reflector of an unconventional size. Background technique [0002] As a kind of aircraft that is being gradually promoted, UAV has unique advantages such as reducing personnel input, not being limited by the physiological conditions of the driver, and the weight of the carrier itself is small. Endurance, as the core performance index of a UAV, is mainly determined by the aerodynamic shape of the fuselage, aircraft power and load weight. As the weight reduction requirements for electronic equipment loads become more and more stringent, airframe conformal structure has gradually developed into a practical method. With the development of UAV-borne radar, the weight reduction of radar systems mainly includes structural design optim...
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IPC IPC(8): B23P15/00B23P23/00
CPCB23P15/00B23P23/00
Inventor 陈路加赵丹杨竣博殷东平左防震李沙沙张杨鲁斌孙大智张冠群武建锋
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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