基于逆向工程的复杂曲面冲压件回弹补偿  

Springback compensation for stamping part with complex surface based on reverse engineering

作　　者：王辉[1] 周杰[1] 熊煜[1] 陶亚平[1] 向荣[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《吉林大学学报（工学版）》2017年第6期1842-1847,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51575067)

摘　　要：针对复杂曲面类零件提出了一种采用三维全型面扫描检测零件的方法,通过逆向建模得到扫描数模,并与设计模型进行对比,得到成形零件的偏差量。对于某大型核电汽轮机空心叶片外弧零件,采用提出的三维全型面检测方法对其进行数据检测,并与设计模型进行比较,得出该零件的最大正偏差为2.59mm,最大负偏差为-3.04mm。与传统专用检具相比,三维全型面检测可以用于快速检测各类复杂零件,具有检测数据全和精度高的特点。对于该零件的回弹问题,提出了基于逆向工程的零件回弹补偿方法。对叶片外弧零件进行回弹补偿后,进行模具加工和试验,得到最终叶片外弧零件的最大正偏差为1.36mm,最大负偏差为-1.43mm,满足叶片外弧尺寸偏差的要求。For parts with complex surfaces, a 3D scanning measurement method for full profile was proposed. To obtain the shape deviation of the part, the scanning model was built by reverse modeling and used to compare with the design model. The proposed method was used to measure the blade out arc hollow parts of a large nuclear power steam turbine, and then compared with the designed model. The measuring results show that the largest positive and negative deviations are 2.59 mm and -3.03 mm, respectively. Compared with the traditional special fixture, the 3D full profile measurement method can be used to measure various complex parts rapidly, and it has the characteristics of full data and high precision. To solve the springback problem of the part, springback compensation for the part with complex surface based on reverse engineering was introduced. After springback compensation for the blade out arc hollow part, The molds were processed and tested. The results show that the final largest positive and negative deviations are 1.36 mm and -1.43 mm, which meet the requirement of the shape deviation of that part.

关 键 词：材料合成与加工工艺 逆向工程 回弹补偿 模具 复杂曲面 

分 类 号：TG386.1[金属学及工艺—金属压力加工]