| 摘要 |
PURPOSE:To make it unnecessary to mold directly from an original die, and to prevent a hindrance of a flow of work, by providing in parallel plural die plates for reproducing plural parts of a master model, extending a wire net between each die plate, laying resin, and finishing it. CONSTITUTION:For instance, when manufacturing a master model of a press die for an outside plate of an automobile body, a front view of a part 1 to be manufactured is divided by longitudinal and lateral lines of specified intervals, and points 4 of four corners of each measure are converted to a numerical value as a point of three-dimensional co-ordinates in accordance with a numerical value of a design. Subsequently, in the three-dimensional co-ordinates formed by a die frame 5, said each point 4 is reproduced by plural die plates 6 in accordance with said numerical value, and a rough shape of the part 1 is reproduced solidly. Each plate 6 is positioned at the frame 5, and after that, is fixed. Subsequently, a wire net 7 is extended so as to smoothly connect each point 4 reproduced by the plate 6, on which normal temperature hardening resin 8 is laid to nearly specified thickness, is hardened, and after that, its surface is cut, controlling in accordance with said numerical value of a design, and a master die 10 is obtained. |
