Aviation thin-wall blade compensation processing method

Abstract

The invention relates to an aviation thin-wall blade compensation processing method and belongs to the field of compensation processing of precision parts in the mechanical engineering field. For the problems that it is hard to predict deformation and error in the blade processing process, and it is difficult to control the processing precision and the like, the method carries out precise predicted compensation processing by obtaining measurement point coordinates of the parts in the processing process and by utilizing the processes of digital modeling, numerical control machining, off-line inspection path planning, point-cloud fitting and processing code regeneration and the like, so that the purposes of on-line measurement and deformation compensation and the like of the aviation thin-wall blades are achieved, the problem of difficult processing deviation suppression in the processing process of free-form surface parts of blades at present is overcome, machining precision of the kind of blades can be improved, rejection rate is reduced, and machining quality of the thin-wall blades are obviously improved.

Description

technical field [0001] The invention relates to the technical field of compensation processing of aviation thin-walled blades, in particular to an online measurement and compensation processing method for milling deformation of thin-walled blades. Background technique [0002] In the field of aerospace, in order to reduce the weight of aircraft, titanium alloys and high-temperature alloys with superior performance are usually selected as engine blade materials. The impeller blades are characterized by free-form surfaces, and the wall is thin and distorted. The final precision of the parts is relatively high, and the processing is difficult. If there is a slight carelessness in the processing process, the expensive parts will be out of tolerance and scrapped or the final produced parts will not meet the requirements. Deprecated due to precision requirements. The existing measurement system and processing technology are inefficient for the processing of this kind of high-prec...

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Problems solved by technology

[0003] Aiming at difficult problems such as deformation and error prediction during blade processing, and difficulty in processing precision control, the purpose of the present invention is to propose a compensation processing method for aviation thin-walled blades. Modeling, CNC machining, offline detection path planning, point cloud fitting, processing code regeneration and other processes, and accurate predictive compensation processing, to achieve the purpose of online measurement and deformation compensation of aviation thin-walled blades, and overcome the current free-form surface parts of blades It is difficult to suppress the machining deviation in the machining process, which can improve the machining accuracy of this type of blade

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