田中 秀岳

This study deals with automation of metal hammering working on the basis of CAD data as a forging type rapid prototyping system. In this article, in order to analyze the phenomenon in metal hammering working, a CAM system for metal hammering is developed and experiments of incremental metal hammering based on the system are examined under several conditions. From the experimental result, influences of the mode of a tool path on the deformation behavior, a possibility to improve a forming limit by distribution control of strain on a workpiece and a capability of the system to perform the forging type rapid prototyping are found.

<jats:p>The forging rapid prototyping we proposed based on CAD data involves numerically controlled free forging and metal hammer working as new three-dimensional modeling. Almost all products are now designed and developed using CAD/CAM, and rapid prototyping using CAD data is also used to model design previews or mock ups. Free forging and plastic working, however, have few ways to automate the process. We developed numerical controlled free forging and metal hammer working as new modeling for rapid prototyping. Experimental results demonstrate that our proposal provides feasible three-dimensional modeling as rapid prototyping.</jats:p>