Abstract:

In order to make sports bra cup more fit and comfortable, a method was explored for building the sports bra cup model based on reverse engineering and 3-D printing the model for making cups. Firstly, the 3-D body scanner was used to obtain the point cloud data by scanning body form, then Geomagic Studio software was used to optimize the point cloud data and construct breast's NURBS surface, UG software was used to intercept the cup outline according to the bra cup style and body surface curvature and design the thickness value for the intercepted surface. During 3-D sports bra cup model printing process, the model slice was firstly created, and then with the principle of light curing, the 3-D model was printed.  Finally 3-D printing sports bra cup was achieved. The error between the surface of the 3-D printing sports bra cup and the surface of the body form was also analyzed. The results show that the average deviation of the surface reconstruction is 0.01 mm, and the precision of the 3-D printer is 0.03 mm. The research indicates that using 3-D printing technology with reverse engineering can produce fit cups, achieve female sports bra cup customization.

Key words: 3-D printing, sports bra, bra cup, reverse engineering, point cloud data