Fineblanking is a specialized precision metal stamping process used to produce high-quality, burr-free parts with tight tolerances and intricate features. It is commonly used in the automotive, aerospace, and appliance industries, among others. Fineblanking involves a combination of cutting, blanking, and forming operations performed in a single press.

In a fineblanking operation, a strip of metal is fed into a fineblanking press, also known as a fine blanker. The press consists of a stationary bed, a punch, and a die. The punch and die have specially designed features that allow for precise cutting and forming of the metal strip.

The process begins with the metal strip being gripped and held between the punch and the die. The punch applies a high force to cut the outer profile of the part while the inner profile is sheared by the die. Unlike traditional stamping processes, fineblanking uses a special clearance between the punch and die to achieve a clean cut without deformation or burrs.

Once the cutting operation is complete, the fineblanking press incorporates an additional forming operation. This involves the punch applying a second, lower force to create intricate features, such as holes, grooves, or other forms, in the part. The result is a finished part that is precise, flat, and free from burrs or other imperfections.

Fineblanking offers several advantages over other metal stamping methods. It allows for the production of complex parts with high dimensional accuracy and tight tolerances. The process eliminates the need for secondary operations like deburring or machining, reducing overall production time and costs. Fineblanked parts are often used in applications where reliability, precision, and quality are critical.

The fineblanking process is utilized in various industries to manufacture components such as gears, sprockets, clutch plates, brake pads, connectors, and many other precision metal parts.