Flutter suppression method of aluminum alloy thin-walled blade and passivation method of cutting tool

Abstract

The invention provides an aluminum alloy thin-wall blade flutter restraining method and a passivating method for an aluminum alloy thin-wall blade flutter-free cutting tool. By specifically passivating the cutting tool, flutter-free cutting for an aluminum alloy thin-wall blade can be achieved without filler or other supplementary means. Tool passivation involves tool abrasive passivation and cutting passivation. Abrasive materials prepared in a special way are adopted during tool abrasive passivation. After the tool is passivated through the steps, adjusted parameters are used for blade fine machining within the tool service life range, and then flutter-free cutting can be achieved.

Description

technical field [0001] The invention relates to a method for suppressing blade flutter, in particular to a method for suppressing flutter of an aluminum alloy thin-walled blade and a passivation method for a cutting tool thereof. Background technique [0002] The booster stage rotor is the core technology of the compressor in the small turbine engine. It is generally an open integral blisk structure, and the material is mostly aluminum alloy and titanium alloy. It is easy to flutter, which seriously affects the quality of blade processing and even leads to product scrapping. [0003] Traditional chatter suppression methods include cutting parameter optimization, tool path optimization, and filler method, among which the filler method is the most widely used. Before finishing, fillers such as tin-bismuth alloy, oil-soil material or gypsum are added between the blades. Thereby increasing the rigidity of the process and damping vibration absorption to achieve the purpose of su...

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Problems solved by technology

[0004] Traditional cutting parameter optimization and tool path optimization methods can only solve specific chatter problems. Although the method of suppressing blade chatter by adding fillers can improve the blade chatter problem, it also brings a series of other problems: (1) Due to the need to remove the workpiece before finishing to add the filler, the process preparation time is greatly increased; (2) During the processing, the filler interferes with the tool holder, requiring additional processing or filler cleaning; (3) After adding the filler And during the solidification process of the filler, it will cause the deformation of the blade and affect the machining accuracy; (4) the filler of some materials will damage the filter system of the machine tool and pollute the chips; (5) the use of fillers such as tin-bismuth alloys is expensive and increases manufacturing costs

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