CAJ | 학술논문

基于可重构柔性工装的蒙皮数控切边技术属于新一代蒙皮数字化制造工艺，保证工艺系统刚度是该技术实际应用的难点之一。为了校验切边过程的稳定性，利用单元生死技术实现了蒙皮切边过程的有限元仿真，并基于ABAQUS平台开发了切边数值模拟分析系统，预测切边轨迹的振动情况。为了给仿真分析提供精确的铣削力，结合铣削力理论模型和铣削力试验，建立了航空铝合金蒙皮材料2024-T3的铣削力预测模型。最后给出了仿真分析实例，结果表明，该系统可以预测柔性夹持下的蒙皮切边过程的应力、振动，能为蒙皮数控切边技术的生产实际应用提供技术保障。
기우가중구유성공장적몽피수공절변기술속우신일대몽피수자화제조공예，보증공예계통강도시해기술실제응용적난점지일。위료교험절변과정적은정성，이용단원생사기술실현료몽피절변과정적유한원방진，병기우ABAQUS평태개발료절변수치모의분석계통，예측절변궤적적진동정황。위료급방진분석제공정학적선삭력，결합선삭력이론모형화선삭력시험，건립료항공려합금몽피재료2024-T3적선삭력예측모형。최후급출료방진분석실례，결과표명，해계통가이예측유성협지하적몽피절변과정적응력、진동，능위몽피수공절변기술적생산실제응용제공기술보장。
Aircraft skin NC trimming technology based on reconfigurable fixture is a part of the new generation of skin digital manufacturing process. Ensuring the rigidity of process system is a troublesome problem of its practical applications. In order to verify the stability of the skin trimming process,the skin milling process simulation via element birth and death method was introduced and a trimming numerical simulation analysis system based on ABAQUS was developed. Combined with the milling force theoretical model and milling tests, a 2024-T3 aluminum skin milling force prediction model was established to obtain accurate milling force for simulation analysis. Lastly, several simula- tion examples were carried out, and the results indicate that the system can predict the stress distribution and vibration during flexible skin trimming process. The developed system provides a reliable technical guarantee for the practical applications of this new technology.