ADVANTAGES & DISAVANTAGES BETWEEN PROGRESSIVE & COMPOUND TOOL

ADVANTAGES:-

1. Piece parts produced from compound tools are very accurate and identical because all operations are carried out in a single station.
2. This is possible because the accuracy of the piece part does not depend on the accuracy of the advance of the strip or the accuracy of the layout of the stations as in the case of progressive tools.
3. Scrap stocks from other tools can be employed to produce piece parts in a compound  tool.
   But progressive tool always need stock strip sheared to size.
   In a compound tool burrs resulting from piercing and blanking are on the same side of the piece part.
4. Piece parts produced on a progressive tool will have burr both sides.
   Cost of manufacturing a compound tool is normally lesser than that of a progressive tool for the same component.
5. This is because of the smaller size of the tool and the easier manufacturing methods required.     

DISADVANTAGES:-

1. If the pierced holes are too near to the outer edge of the piece part the blanking punch of the compound tool which accommodates the piercing dies will become very weak.
2. This is a major disadvantage because the punch may break either during manufacture or during the course of the tool life.
3. When piece parts are having pierced holes too near to their outer edges progressive tools are preferred.