轮廓度约束下近净成形叶片余量优化方法

doi:10.7527/S1000-6893.2017.421069

Abstract

Abstract:

To solve the problem of non-uniform machining allowance of the near-net shape blade in adaptive finish machining, an allowance optimization method is put forward considering the profile tolerance constraints of the blade cross curve. When the design datum is matched with the machining datum, the allowance optimization theory that the workpiece makes rigid displacement is modified to establish a new optimization model for the blade. The method proposed prevents the inspection section curve of the blade after optimization from going beyond the profile tolerance, and improves the ability of identifying the surface to be machined in the allowance optimization stage. A compressor blade is taken as an example to validate the method. Analysis shows that the method can meet the requirements of blade machining allowance and can also satisfy the profile tolerance of the inspection section curve, providing a new approach of allowance optimization for near-net shape blade in the adaptive machining process.

Key words: near-net shape, adaptive machining, section curve, profile tolerance, allowance optimization

CLC Number:

V260.5

HOU Feiru, WAN Neng, CHANG Zhiyong, CHEN Zezhong. Anallowance optimization method for near-net shape blade under profile tolerance constraints[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(7): 421069-421069.

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Anallowance optimization method for near-net shape blade under profile tolerance constraints

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