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Inner and outer shaped surface precise machining process for antenna cover

A technology of precision machining and radome, applied in the directions of antennas and radiation unit covers suitable for movable objects, can solve the problems of low machining accuracy and high rejection rate, and achieve energy saving and consumption reduction, improve yield, and improve machine quality. time utilization effect

Inactive Publication Date: 2012-11-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a precision machining process for the inner and outer profiles of the radome, an active positioning method and its process equipment, so as to solve the defects of low processing accuracy and high scrap rate in the prior art

Method used

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  • Inner and outer shaped surface precise machining process for antenna cover
  • Inner and outer shaped surface precise machining process for antenna cover
  • Inner and outer shaped surface precise machining process for antenna cover

Examples

Experimental program
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Effect test

Embodiment 1

[0038]A special jig for precise machining of the inner and outer profiles of a radome, including two special jigs 20 for the outer profile and 30 for the inner profile. The special clamp 20 for the external surface includes a radome positioning element 21, a positioning support plate 22, and a special clamp base part 23 for external surface processing. The positioning surface of the positioning element 21 is conical, and the elastic ring 24 and The outer positioning base part 23 is connected, and there is a guide column on the positioning element 21 to match the guide hole of the special fixture base part 23 for external surface processing, and the positioning support plate 22 is connected with the special external surface processing fixture base part through positioning pins and bolts 23 is connected, and the special clamp base part 23 for exterior surface processing is connected with the air hole of the positioning element 21 with a flexible pipe 25, and the vacuum device is ...

Embodiment 2

[0061] An active location-finding method for the electrical thickness detection and precise grinding of the exterior surface of a radome, comprising the following steps:

[0062] 1) Install a special fixture 20 for the external profile on the positioning workstation 40, and the special fixture is positioned with the radome end face 11 and the tapered hole 12 after precision grinding;

[0063] 2) Place the radome after processing (or grinding) vertically on the special fixture 20 for the external surface, and actively seek the position, so that the center of the tapered hole 12 of the radome is consistent with the center of the special fixture 20 for the external surface, and at the end of the radome. Clamping mechanism 60 is used for external clamping;

[0064] 3) Make the support plate 22 and the clamping mechanism 60 of the radome 10 and the special clamp 20 for the external surface form a workpiece / clamp whole 53 ( Figure 8 , excluding 40, 71 and 81);

[0065] 4) Install...

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Abstract

The invention relates to a precise process procedure for internal and external moulding surfaces of an antenna dome. The precise process procedure comprises the following main steps: (1) datum grinding process; (2) test process; (3) antenna dome installation process; (4) coarse and fine grinding process of external moulding surface of the antenna dome; (5) external moulding surface test process; (6) antenna dome installation and conversion process; (7) coarse and fine grinding process of internal moulding surface of the antenna dome; (8) test process; and (9) electrical thickness test process. The invention further relates to active position-finding technological equipment supporting installation of the antenna dome outside a machine, which consists of an external moulding surface special fixture (20), an internal moulding surface special fixture (30), a position finder (71) and a position finder (72), a position-finding workstation (40) and the like. The active position-finding technological equipment significantly improves the installation accuracy and the installation reliability of the antenna dome, significantly improves the working accuracy and the yield of the antenna dome, which in particular improves the coaxial accuracy by two grades or above two grades. By adopting the active position-finding technological equipment supporting installation of the antenna dome outside the machine, the debugging difficulty is significantly reduced; the installation and debugging time is reduced; the and utilization ratio of a numerical control grinder specially used for the antenna dome is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of precision manufacturing, and in particular relates to a precision machining process for the inner and outer profiles of a radome, an active positioning method and its process equipment. Background technique [0002] The missile radome is a device that protects the missile seeker antenna from working normally in harsh environments. It is not only a complete compartment (missile head) of the missile body, but also one of the key factors related to the missile guidance accuracy. One, the higher the accuracy, the more chances of winning. However, since the radome is a large-depth thin-shell structure, its length-to-diameter ratio is mostly 2:1, and there is no stable and reliable process reference for positioning and clamping during machining; in addition, the material of the radome is mostly quartz Ceramics are hard and brittle, and have low tensile strength. Whether the workpiece is installed or machined, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/42H01Q1/28
Inventor 李蓓智杨建国王庆霞葛鲁宁朱静怡
Owner DONGHUA UNIV
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