Semi-conical wave-transparent radome machining device and method

Abstract

The invention provides a semi-conical wave-transparent radome machining device and method, and particularly relates to a high-precision and high-efficiency machining device and method for a ceramic matrix composite material complex structure semi-conical wave-transparent radome. According to the structural characteristics of the wave-transparent radome, a machining process route is formulated and optimized, and a whole radome turning machining scheme, a whole radome subdivision machining scheme and a half radome matching surface milling machining scheme are formed; a special machining device is designed, so that the machining efficiency is remarkably improved while the machining precision is guaranteed; and for a complex structure of a tenon-and-mortise groove in a radome body, a feeding path of linear driving multi-tool-path parallel processing is adopted, and the five-axis machining technology is used for machining on a three-axis machine tool. By means of the process method, the problems that in the workpiece machining process, the positioning difficulty is large, the machining efficiency is low, and a complex mortise and tenon joint structure is difficult to machine are solved, high-precision machining of the meter-scale large-size wave-transparent half radome is broken through, and important guarantee is provided for development and production of workpieces of series models.

Description

Technical field [0001] The invention belongs to the field of mechanical processing of ceramic matrix composite materials, and relates to a large-size complex structure semi-conical wave-transmitting radome processing device and method, in particular to a ceramic-based composite material complex structure semi-conical wave-transmitting radome with high precision. , high-efficiency processing devices and methods. Background technique [0002] The complex structure of the semi-conical wave-transmitting radome is an open thin-walled structural part. The processed surface is used as a mating surface and requires high precision. However, the workpiece blank does not have an accurate positioning reference surface and a reliable clamping surface, making it difficult to guarantee the structural accuracy; In addition, wave-transmitting radomes generally use continuous fiber-reinforced ceramic matrix composite materials. The high brittleness, high hardness and high wear resistance of c...

AI Technical Summary

Problems solved by technology

[0004] (1) The workpiece is an open semi-conical structure, and the processing surface is used as a mating surface, which needs to be matched with multiple workpieces. The processing accuracy is high, and there are concave wedge-shaped mortise and tenon groove structures on both sides of the inner surface of the workpiece, which is difficult to process Large, high precision requirements;

[0005] (2) The workpiece adopts the processing scheme of profiling without reference blank. The workpiece and tooling cannot be accurately positioned. It takes repeated measurements and multiple trial cuts to determine the workpiece contour and thickness allowance. The processing efficiency is low and there is a high size overshoot bad risk;

[0006] (3) The profiling blank of the workpiece is a large-sized thin-walled part, which is prone to large deformation during clamping and processing, which seriously affects the processing accuracy, making the workpiece unable to meet the accuracy requirements after processing

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