Punching Operation Sheet Metal

Press working operations or sheet metal operations.

Punching operation sheet metal.

Here punching operation and blanking operation comes under cutting or shearing operations whereas deep drawing and bending operations come under forming operations. In other words a combination of punching operations are used to manufacture finished parts. As explained above punching operation removes scrap from the larger piece of sheet metal. This gives both the punched detail and bore the typical cut surface seen in punching operations i e smooth surface where the material has slipped and a rougher surface where the failure occurs.

And the punch is hit at the other end of the sheet producing a shearing effect. When a specially shaped punch is used to create multiple usable parts from a sheet of material the process is known as blanking. It leaves a lean edge on the piece of metal is sheared or cut. By physical removal of the material from the sheet if the required shape of the component is obtained called as cutting or shearing operation.

It is a metal removal operation. In other words combination of punching operations modify existing blank sheet using metal removing operations. Metal stamping is a cold forming process that makes use of dies and stamping presses to transform sheet metal into different shapes. Slugging is the operation of punching in which the punch is stopped as soon as the metal fracture is complete and metal is not removed but held in hole.

Stretch forming is a sheet metal forming process in which the sheet metal is intentionally stretched and simultaneously bent to have the shape change. In metal forging applications the work is often punched while hot and this is called hot punching. Punching is very similar to blanking except that the removed material called the slug is scrap and leaves behind the desired internal feature in the sheet such as a hole or slot. In this operation a sheet metal workpiece is placed or kept between two dies from one end.

During the punching process material is displaced and then loosen completely by material failure. Sheet is held by jaws or drawbeads at both the ends and then stretched by punch such that the sheet is stressed above yield strength. Pieces of flat sheet metal typically referred to as blanks is fed into a sheet metal stamping press that uses a tool and die surface to form the metal into a new shape. Punching is a cutting process in which material is removed from a piece of sheet metal by applying a great enough shearing force.

It is a cut in a straight line across a strip sheet or bar. Punching is often the cheapest method for creating holes in sheet materials in medium to high production volumes. As a result of punching a larger piece of sheet metal becomes the final product. Sheet metal cutting using punching operation.