Research On Interactive Design Of Shoe Last And Upper Based On Reverse Engineering

The technical development of science all brings many changes for every trade, shoe industry necessarily also is subjected to the serious impact.Leading the technique of CAD into design and manufacture of shoe industry has the important meaning for raising the levels of the whole shoe industry.At present,CAD technique of shoe industry is not perfect, on the basis of the analysis of its status quo and the problems remained,the work has been done in the paper is as follows:Because shoe last is the basis of shoe style in making the shoe craft, also is benchmark of shoe style in the shoemaking technology, so shoe last model is reconstructed firstly in this paper. The geometric model of shoe last is a typically composed of free form surfaces rather than basic geometric shapes, the design of the shoe last is usually divided into two methods which are" positive design" and" reverse design", this paper adopts the method of reverse design", i.e.acquires the shoe last surface data through the surface measurement system, then reconstructs model according to the points data, gets the shoe last digital model at last.The accurate establishment of the shoe last model is the function for shoemaking later.Shoe last flattening has been a hotspot in the area of shoemaking. At present, there are many shoe last flattening methods for shoe pattern design, all each have the characteristics. In this paper,the new shoe last flattening method is put forward which combined the characteristics points of the shoe last with some surface flattening arithmetic, the shoe last is flattened by the surface flattening arithmetic which namely triangle method combines the theory which is best flattening base point together. In the process of flattening, the error analysis is done for parameterizing meshes and changing flattening base point ,then the best mesh and flattening base point are selected. The contrast is implemented between the flttening result by the method which is introduced in this paper and the graphics which is done by the traditional shoe last flattening method which namely trigonal construct method, thereby gets the more reasonable result of shoe last surface flattening.In the shoe pattern design process, the problem which how to realize interactive design freely between 2D and 3D is always expected to resolve better in computer aided shoe pattern research. So it is studied deeply in this paper. To realize the interactive design thought...