Flexible stratification method based on constant cutting force for machining blade surfaces

During milling of free-form surfaces, cutting force varies due to the variation of workpiece surface curvature, which can seriously affect machining quality. In this study, a layered strategy was proposed for flexible machining of complex parts with variable curvatures. By taking a blade as the rese...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2022-05, Vol.120 (1-2), p.159-172
Main Authors: feng, Liu Zhi, rui, Zhao Peng, xiong, Li Zhi, rui, Cao Zi, hang, Su Li
Format: Article
Language:English
Subjects:
Advanced manufacturing technologies
Algorithms
CAE) and Design
Computer-Aided Engineering (CAD
Cutting force
Cutting parameters
Deformation
Engineering
Free form
Industrial and Production Engineering
Laboratories
Manufacturing
Mathematical analysis
Mechanical Engineering
Media Management
Methods
Milling (machining)
Original Article
Radius of curvature
Surface properties
Workpieces
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Description
Summary:During milling of free-form surfaces, cutting force varies due to the variation of workpiece surface curvature, which can seriously affect machining quality. In this study, a layered strategy was proposed for flexible machining of complex parts with variable curvatures. By taking a blade as the research object, we first considered a constant cutting force as the starting point. The relationship between the machining allowance and the radius of curvature of the workpiece under a certain cutting force was established. By analyzing the curvature of each position of the blade, a reasonable cutting allowance was set for each layer and the machining process was carried out layer by layer, such that a stable cutting force was maintained on the workpiece surface during machining of each layer. Second, the blade surface deformation law was determined by using the T-spline surface characteristics and an improved offset algorithm, and a series of deformation surfaces was obtained. Finally, the feasibility of the proposed method was verified by using finite element simulations and validated by experiment, and the advantages of the proposed method were verified by comparison with the existing main blade processing methods.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-020-06551-9