Numerical control processing method of elastic bracket

Abstract

The invention relates to a numerical control processing method of an elastic bracket, which comprises the following steps: (1) carrying out rough turning to bar stocks to be processed according to the design drawing of the elastic bracket; (2) seasoning workpieces obtained after rough turning to eliminate stress; (3) clamping a process chuck, finely turning the workpieces processed in step (2) in a numerical control mode to remove surplus in step (1), finely boring six uniformly distributed milling mounting holes at an excircle end surface, and cutting off the process chuck after processing; (4) processing the workpieces processed in step (3) circularly at high and low temperatures, stabilizing the sizes of the workpieces and further eliminating stress exerted by machines; (5) arranging the workpieces processed in step (4) on a mould to be finely milled in a numerical control mode with the cutting depth not larger than 0.2mm, the fine milling surplus not higher than 0.05mm, the cutter diameter less than phi3, the spindle rotation speed higher than 5000r / min and the feeding speed lower than 250mm / min in the fine milling process; and (6) disassembling the workpieces from the mould, and finely milling a conical surface of a hollow shaft of the elastic bracket on an ordinary fine turning lathe.

Description

technical field [0001] The invention relates to a numerical control processing method of an elastic support, in particular to a key method for realizing long life and high reliability of a shaft assembly of a high-orbit satellite optical sensor product. Background technique [0002] Oscillating infrared earth sensors are used in many satellites on high-orbit satellite platforms, and are in great demand. The shaft system is an important part of this type of infrared earth sensor. Improving the long life and high reliability of the shafting system is a reliability growth project of the Fifth Academy's "Tenth Five-Year Plan". The elastic bracket is an important part in the shafting assembly of the swinging infrared earth sensor, supporting the swinging mirror. Its quality is the key to whether the entire infrared earth sensor can realize long life and high reliability. [0003] 1) The shape of the elastic support is complex, (such as figure 1 As shown), the thickness of the ...

AI Technical Summary

Problems solved by technology

However, considering other factors comprehensively, the qualified rate of this batch is less than 20%.

[0013] 2) Traditional processing is difficult to ensure the wall thickness requirements at the corners, and it is also difficult to ensure the smooth transition between the inner and outer arcs

[0014] 3) Traditional processing is greatly affected by human factors, and the processor's experience, physical condition, emotion and other factors will affect the quality of processing

Coupled with the requirements of mass production, it is difficult to ensure the consistency of dimensions and the pass rate of parts

[0015] 4) Due to the limitations of the manual equipment itself, the cooling is not sufficient during processing, and the heat generated during processing cannot be dissipated, resulting in relatively large processing stress

Therefore, multiple heat treatments are required in the process to eliminate the processing stress, which results in a long processing cycle and low efficiency, and it is difficult to ensure the progress.

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