The Design and Fabrication of a Compound Die to Make Hexagonal Washer

Many parts and components used in mechanical industry are manufactured by cold pressing operations. Die is the main tool in these operations. There are different types of dies like progressive die, compound die and combination die. This paper presents design and fabrication of a compound die which combines blanking and piercing operations. Design and development of compound die is one of the important phases in sheet metal working. The small error in the design can result in heavy manufacturing losses through die failure, part geometry distortion and production risk. Assembly of all the die elements is another task where use of accurate measuring instruments for alignment of various tool elements is important. In the present work, a compound die for production of a hexagonal washer of M15 bolt has been designed and developed. The 2D modelling of the compound die has been done using solid works software. This press tool has been tried out on a fly press. The components produced are to the required dimensions