Milling finish machining method based on dynamic rigidity of impeller blade

An impeller blade, dynamic stiffness technology, applied in the field of machining, can solve problems such as the importance of suppression not involved, achieve the effect of improving machining stability and solving cutting chatter
CN102554326BActive Publication Date: 2014-02-26SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2014-02-26

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Abstract

The invention discloses a milling finish machining method based on the dynamic rigidity of an impeller blade. The dynamic modality of the impeller blade is obtained through a standard modal test, a flutter model is introduced to obtain a stability criterion, and reasonable machining parameters are acquired. The method comprises the followings steps of: 1, performing the modal test to measure the dynamic modality of the impeller blade; 2, building a milling stability model of the impeller blade; 3, studying the dynamic rigidity stability of the impeller blade; 4, obtaining a cutting stability condition under the dynamic rigidity of the impeller blade; and 5, verifying the cutting stability condition and adopting the finally optimized cutting parameters to machine. The problem of cutting flutter caused by milling of thin-walled parts such as the blade is solved by the method, and the machining stability is obviously improved by optimizing the cutting parameters. The method is suitable for finish machining of various thin-walled parts.
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Description

technical field

[0001] The invention relates to a processing method for impeller blades, in particular to a milling and finishing method for thin-walled parts considering dynamic stiffness, and belongs to the technical field of mechanical processing. Background technique

[0002] The impeller blade is a very typical and representative thin-walled part, which is widely used in aerospace, metallurgy, military industry, petrochemical, electric power and other fields. It is the core component of fans, engines, compressors, water pumps and other machinery. The quality of blade processing and whether the processing accuracy meets the requirements directly determine the performance of the entire equipment. In the manufacture of impeller blades, due to the characteristics of thin blades and long blade spans, tools with a large aspect ratio are usually used. However, this will cause a contradiction between the weak rigidity of the process system and the strong input excitation during...

Claims

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