STRUCTURE OF SPHERICAL WASHER FOR ELIMINATING ACCUMULATED ERRORS IN COMPACTING AND COINING TOOL SYSTEM

In P/M products’ processing, the tolerances accumulated from the manufacture of equipment and its compacting tools make the deviation and distortion of dies,punches and core rods on their relative positions,and therefore decrease their accuracy or even damage them. This paper has described how to eliminate the angle errors by using spherical washers and the method to eliminate the position errors by horizontally moving or floating the punches and core rods therefore the accuracy of products is improved and the production cost of dies decreases.