The process of stamping presses is called as Precision Stamping and it involves the use of stamping dies for producing sheet metal parts in high volume. It is through the impact of die tooling that these parts are able to get their shape. Usually materials which have a thickness of .020” to .080” involve the use of production stamping, however it can also be used for foils, which have a thickness of around .001” or plate stocks, the thickness of which approaches 1.000”. Sheet metal material is primarily known for its formability, a term that defines the ability of a material to bend, draw or stretch.
Die is a term, generally used for referring to tools used for producing stamped parts. Die set assembly that consists of female and male components is the tool that produces shaped stamping. It is due to the opposite actions of female and male components that forming and punching holes in stock is possible. Upper half of die set, either female or male, is placed on press arm for delivering the action of stroke, while lower half gets attached to a bolster plate, further secured on to a press bed. For ensuring proper alignment of both the halves of die set, guide pins are brought into use.
With over 50 years of experience, we are capable of developing dies in-house for stamping various materials, such as brass, mild steel, copper, stainless steel, phosphorous bronze and beryllium copper. Constantly striving for excellence, we have been able to develop progressive dies as well, which work efficiently with auto feeders, while giving an output which is five times more than usual.
Progressive Die Stamping
The process of metal forming, progressive die stamping is used for producing parts for automotive, appliances, electronics and various other industries. It consists of various independent work stations, where different operations are carried out on each part.
A stock strip is used for carrying the part from one work station to another and it is removed from the strip as it reaches the last operation. The decision of choosing one among transfer die and progressive die, for producing a part, is based on the size, volume and complexity of the part to be produced. For producing large quantities of parts, while keeping the costs to the minimum, progressive die stamping is used. It ensures that the produced parts have the desired durability and precision.
Considering the complexity involved in progressive dies, it is crucial that every factor responsible for assuring desired quality, such as blank position, blank boundary, stretch-web deformation and pilots, is addressed carefully.
When it comes to fixing a strip in a suitable position or maintaining complete control in progressive die stamping, it is the pilots that play a highly crucial role. Besides this, they also help in precise positioning of sheet drawing operations and tool closing in transfer dies. Timing, as well as interaction of pads, carriers and lower and upper tools is another factor worth considering. Progressive die stamping offers numerous benefits, including enhanced productivity and consideration reduction in costs, especially during high volume production.