Blanking Operation Of Sheet Metal

Blanking produces the outside features of the component while piercing produces internal holes or shapes.

Blanking operation of sheet metal.

It is an operation of producing circular holes on a sheet of metal by a punch and die. It is a metal cutting operation. In blanking metal obtained after cutting is not a scrap or it is usable. The material that is removed is the new metal workpiece or blank.

For example disk or plane washers are manufactured using blanking operation. As explained in the above image the blanking operation produces an enclosed part from a large piece of sheet metal. By physical removal of the material from the sheet if the required shape of the component is obtained called as cutting or shearing operation. The web is created after multiple components have been produced and is considered scrap material.

Home metal fabricating tips facts blanking process. Blanking is a metal fabricating process during which a metal workpiece is removed from the primary metal strip or sheet when it is punched. Blanking is the operation of cutting flat shapes from sheet metal. Sometime multiple sheet metal are blanked with in an single operation final products by using that blanking operation such as jewelry gears and clock or watch components.

As a result the blank part is used as the final product. Best position of crank for blanking operation in a mechanical press is a top dead centre b 20 degrees below top dead centre c 20 degrees before bottom dead centre d bottom dead centre 2. Here punching operation and blanking operation comes under cutting or shearing operations whereas deep drawing and bending operations come under. A punch and die are further used here such as blanking operations.

After blanking operation the parts will be require secondary finish to smooth out burrs with bottom edge the fine blanking process is most method of blanking. Blanking and piercing are shearing processes in which a punch and die are used to produce parts from coil or sheet stock. The outer area of metal remaining after a blanking operation is generally discarded as waste. Size of blank or product is the size of the die clearance is given on punch.

Characteristics of the blanking process include. This is the exact opposite of blanking but the operation is nearly the same.