Fine Blanking Process Sheet Metal

The terms piercing and punching can be used interchangeably.

Fine blanking process sheet metal.

The working principle fine blanking of a typical spur gear is presented in fig. Most of the equipment and setup for fine blanking is similar to conventional blanking. The fine blanking provides parts having smooth edge better flatness and high tolerance. The blanking process forces a metal punch into a die that shears the part from the larger primary metal strip or sheet.

Initially the gear blank in the form of a sheet is compressed between the blank holder and die. For example disk or plane washers are manufactured using blanking operation. A die cut edge normally has four attributes. Fine blanking ensure stability regarding production with high quality and precision.

Fine blanking is a fully automated precision metal working stamping process. It is also similar to stamping but differs in the sense that it uses two opposing dies to form the gear from sheet material. The only addition operation needed is the removal of a slight burr. The sheet metal stock is placed over the die in the blanking press.

Which blanking process sheared the sheet metal in three type of force separately applied. Blanking operation in sheet metal as explained in the above image the blanking operation produces an enclosed part from a large piece of sheet metal. It ranges from 0 0003. Punch direction press counter punch force compressive stress.

Blanking produces the outside features of the component while piercing produces internal holes or shapes. The blanking process requires a blanking press sheet metal stock blanking punch and blanking die. The slugs produced by piercing internal features are also considered scrap. Fine blanking is a high precision metal forming process used extensively in the automotive heavy duty electronics medical lawn and garden and general industrial industries.

The illustration that follows provides a two dimensional look at a typical blanking process. Fine blanking process is one the specialize type of process. As a result the blank part is used as the final product. Blanking and piercing are shearing processes in which a punch and die are used to produce parts from coil or sheet stock.

The die instead of having a cavity has a cutout in the shape of the desired part and must be custom made unless a standard shape is being formed. Fine blanking is similar to extrusion where the metal is extruded through die cavities to form the desired gear tooth geometry. Fine blanking permits 3 d composite processing including coining semi shearing bending and drawing. In fineblanking the manufactured product needs to have a full contact surface on the edge of the part.

The process requires a triple action fine blanking press. The web is created after multiple components have been produced and is considered scrap material.