Coining Process In Sheet Metal

Bottom bending has similarities to both air bending and coining.

Coining process in sheet metal.

Commonly used equipment include box and pan brakes brake presses and other specialized machine presses typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork. High pressure is applied on the closed die containing the metal work piece. Coins metal currency are created with the coining process. In coining the thickness of the material in the starting stock is altered.

Techniques of coining completely closed dies are used for this process. Slotting coining forming sheet metal. Coining also can reduce the metal thickness. The grob slotting technology is a universal and extremely cost effective slotting coining and forming process for cup or ring shaped sheet metal workpieces.

As a result of the high deformative stress the metal conforms to the shape of the die. Lubricants are not used in coining as they. Benefits cnc controlled process with correction option slotting operations in individual steps. Coin production figure 8 1 indenting impressions into badges coining components for mechanical engineering and the electrical engineering industry figure 8 2.

During the coining process the material is put under enough pressure that the punch tip penetrates the material at the bottom of the bend and it begins to flow into the die. Bending is a manufacturing process that produces a v shape u shape or channel shape along a straight axis in ductile materials most commonly sheet metal. Coining dies create the part s shape by squeezing the metal under extreme pressure. Because the sheet metal flows during the process of coining the bend radius formed by coining is always equal to that of the punch tip.

Air bending is the most common type of bending process used in sheet metal in this process the work piece is only in contact with the edge of the die and the tip of the punch the benefits of air bending are as following. A simple round metal slug is placed into the die and forced to flow into a given shape by compressing it see figure 3. The coining process is preferred when there is a high tonnage. In this process the die angle should match the intended.

Metal rolling metal extrusion metal drawing sheet metal powder processes metal coining metal coining is a forging process by which very fine and intricate details can be created on the surface of a work piece. Coining is a form of precision stamping in which a workpiece is subjected to a sufficiently high stress to induce plastic flow on the surface of the material.