Quality control on the large spherical mould based on Matlab

 

 

WANG Bo, ZHAO Zhuanping, GONG Xing

 

(College of Mechanical and Electrical Engineering, Nanjing University of 

Aeronautics and Astronautics, Nanjing 210016, China)

 

 

Abstract: Aiming at the quality control of large spherical mould, the manufacturing process of mould, sphericity error, spherical diameter error were researched, different algorithm on sphericity error and repairing mould algorithm on spherical screen were summarized, a mathematical model based on Matlab controlling algorithm was established. The minimum zone method was adapted to the Matalb′s fmincon function on the basis of least square method. Considering the sphericity error and spherical diameter error as the control parameters, the functional relationship between the processing parameters and the least die repairing amount was determined. The results indicate that this kind of control algorithm is of fast convergent rate, high precision and few mold repairs and is of guiding significance to the processing quality control of large spherical screen model.

 

Key words: sphericity error; spherical diameter error; minimum zone; fminunc function; fmincon function