In design of cutting dies, the cutting pressure coming on it is very important and its magnitude is of the offer of 1.5 L x t x fs . where L = periphery of work piece, t = thickness of work piece, fs = ultimate shear strength of work piece. In addition, total cutting force depends upon: (i) Sharpness of [...]
In this article we will discuss about:- 1. Introduction to Power Press 2. Power Press Operations 3. Components 4. Flywheel Considerations 5. Transfer Presses 6. Selection. Introduction to Power Press: Power presses are used for producing large quantities of articles quickly, accurately and economically from the cold working of mild steel and other ductile materials. The components produced range over [...]
A typical sketch of die assembly is shown in Fig. 29.3, and all the components used in it are described below: Component # 1. Punch: The punch is the member which forces the sheet strip down and may pierce it or draw it. It takes assistance of die to do this. It should be made of a hard, wear [...]
In simple die, the dies are designed to perform only one operation. But, by proper design of the dies, it is possible to carry out several operations in one stroke of the ram. The dies of the first type are known as single operation dies and second type are known as multi-operation dies. The single operation dies could be further [...]