Interactive design of axisymmetric forging dies using a desk-top computer

Abstract

Computer-aided design and manufacture (CAD/CAM) are becoming increasingly popular in the industrial world. In general, such applications demand the use of a package involving a costly main-frame computer and the associated paraphernalia. In the present study a slightly different approach is made: it is recognised that there are many applications where a computing system of relatively lesser capacity can be profitably exploited. A particular example — discussed in the paper — involves the design of axisymmetric forging dies. The system developed uses a desk-top graphic computer system which is less expensive and within the reach of small forgers. With an integral data-base, it: (i) receives the coordinates of the finished component as the input; (ii) helps in the decision making of forging parameters and comes up with drawings of the final forging, of the forging dies (with appropriate flash-land) and of the ejector; and (iii) provides the NC tape for machining the EDM electrode for use in the die-manufacturing process. The key features of the system are discussed in detail.