Prosthetic Socket Computer Aided Manufacturing System

The prosthetic socket is the most important and important crucial parts in prosthetic, and it is the cavity that joins residual limb and prosthetics. Whether or not can be manufactured successfully will affect the entire function of prosthetics. To increase prosthetics performance and success ratio of the making, this paper researches and designs the computer aided manufacturing (CAM )and virtual manufacturing(VM) of the prosthetic socket.This paper firstly recalls the current situation of the prosthetic socket CAM system. Because the domestic traditional socket produce technology has got behind developed country such as Germany and American, it accords with the situation of our country to develop the prosthetic socket CAM system independently so that it reduces the cost of equipment and socket produce cost. Then the paper introduces composition of the prosthetic socket CAM system and illuminates the every part function that include application of computer aided process planning (CAPP) for manufacturing the prosthetic socket, the composition of prosthetic socket computer numerical control (CNC) system and reality of machining programming automatically. CAPP is the important part in course of manufacturing layout. The paper adopts CAPP system in alternate style.According to characteristic of the prosthetic socket, the open loop control way is used in the servo system and the ADVANTECH 3-axis high speed stepping motor control card is selected to control three stepping motor's gain. The library file of control card can realize the 3-axis linkage.At the end of the paper the scheme about socket virtual machining is put forward, which simulates the process of socket machining and the move locus of tool in the screen. It further guarantees the machining accuracy, reduces the cost and is the another innovation and breakthrough for the prosthetic socket manufacturing.