Software Design For Foot Orthosis CAD System

Foot orthosis,as a kind of support installation for alleviating the function obstacle of skeleton muscle system in foot, can be used to treat all kind of feet diseases. To raise produce successful rate and the property of foot orthosis,this paper studies and designs for foot orthosis CAD system.First,this paper introduces the current situation of foot orthosis CAD system.Because the domesstc study for CAD/CAM technology started just in recent years, the technical level has fallen behind developed countries such as Germany and America. And there are still no development and application for orthosis CAD/CAM system, therefore a set of foot orthosis CAD/CAM system is needed. Then, the composition of foot orthosis CAD system have been analysed, and funtion of every parts has been elaborated separately, including the digital measurement of model, the digital modeling of foot orthosis, interactive model display, modification function of model and so on. By using 3D laser scan gathering geometry information from foot orthotic model, original model of foot orthosis has been builded by STL file. Then, the profile of each layers can be acquired by using slicing algorithm delaminating model. Finally, through the profile's standardization, dot cloud file will be gained. Base on dot cloud file gathering through modeling process above, one side data modification in edited area can be carried out expediently, and reasonable, comfortable model will be get. On the other side CAM machining file can be builded directly after modification process, sequentially accomplish numerical control machining of model. This CAD software also make use of OpenGL technology to realize the interactive design of model, thereby improve design efficiency, reduce production cost, decrease technique level and knowledge requirement of manipulator, enhance comfortable of orthosis.