CAJ | 학술논문

环境温度变化对铝合金整体结构件尺寸误差有较大影响，实现因环境温度变化引起工件变形的有效补偿可显著提高航空整体结构件制造精度。采用热机械分析仪测量铝合金毛坯7050-T7451和2124-T851三个方向热膨胀系数值，建立了环境温度与热膨胀系数、缩放系数之间的数学理论模型，采用零件特征遍历算法，实现了CATIA环境下零件CAD模型的准确尺寸重构，完成了线性变形快速补偿软件开发。
배경온도변화대려합금정체결구건척촌오차유교대영향，실현인배경온도변화인기공건변형적유효보상가현저제고항공정체결구건제조정도。채용열궤계분석의측량려합금모배7050-T7451화2124-T851삼개방향열팽창계수치，건립료배경온도여열팽창계수、축방계수지간적수학이론모형，채용령건특정편력산법，실현료CATIA배경하령건CAD모형적준학척촌중구，완성료선성변형쾌속보상연건개발。
The temperature variation inlfuenc-es dimensional error of aluminum alloy aircraft integrat-ed structure greatly. Manufacturing precision of aircraft integrated structure could be improved significantly by achieving effective compensation caused by temperature variation. Thermal Mechanical Analysis (TMA) is adopt-ed to measure the CTE(coefifcient of thermal expansion) of pre-stretched aluminum alloy sheet 7050-T7451 and 2124-T851 in three vertical directions. The mathemati-cal theoretical model between temperature and CTE, scaling coefficient is established. The exact dimension reconstruction of CAD models in CATIA is achieved by implementing feature traversal algorithm and the linear deformation compensation software system is also devel-oped.