Trajectory optimization in electrical discharge machining of three-dimensional curved and twisted channels

Affiliation of Author(s):南京航空航天大学

Teaching and Research Group:组合电加工技术研究室

Journal:Chinese Journal of Aeronautics

Place of Publication:中国

Funded by:企业项目

Key Words:Blisk; Electrical discharge machining (EDM); Electrode; Objective functions; Trajectory generation

Abstract:Numerical control electrical discharge machining (NC EDM) is one of the most widely used machining technologies for manufacturing a closed blisk flow path, particularly for three-dimensional(3D) curved and twisted flow channels. In this process, tool electrode design and machining trajectory planning are the key factors affecting machining accessibility and efficiency. Herein, to reduce the difficulty in designing the electrode and its motion path in the closed curved and twisted channels, a heuristic search hybrid optimization strategy based on channel grids is adopted to realize the initial electrode trajectory design search and optimized size reduction. By transferring the trajectory optimization constraints from the complex free-form surface to numbered grids, the search is found to be more orderly and accurate. The two trajectory indicators, namely argument angle and minimum distance, are analysed separately for the optimized results of the adaptive learning particle swarm op

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Mechanical Engineering

Document Type:J

Volume:35

Issue:4

Page Number:473-484

Translation or Not:no

Date of Publication:2022-01-18

Included Journals:SSCI

Co-author:仇熠聪

Date of Publication:2022-01-18