A rivet press is used to permanently connect materials with metal or plastic rivets. The machine can be manual or motorized, and different types of rivets require different methods of installation. The press may require a die for countersinking, and larger setups may use floor-standing units. Pop rivets require a special tool to complete the process.
When it becomes necessary to fix one material to another permanently, a rivet press can be used to install connectors known as rivets. These rivets are usually made of metal or plastic and, once installed, are difficult or impossible to remove. The specific function of a rivet press can vary depending on the type of rivet used, but generally this machine is motor or hand operated and is used to punch the rivet into place with one strong blow.
The rivet is used with a backing plate or is physically modified to form a stable connection. This latter process is sometimes known as eyelet countersinking; the rivet press will be used to press the rivet into place, then bend the head of the rivet out and down so that the entry hole is sealed. This method is often used in conjunction with two-piece rivets so that the eyelets can be countersunk on either side of the materials being fastened. One-piece rivets can also be used this way, although the rivet will need to be specially designed to countersink on both sides. The rivet press itself may require a special attachment, known as a die, to create the countersink.
A rivet press can be manually or power operated; presses designed for use with larger rivets are often motorized, although some are also powered by compressed air. Smaller riveters are usually manually operated, as not much force is usually required to properly press the rivet into place. Smaller rivets can sometimes be placed using a smaller handheld press. This is especially common if the riveter is only used occasionally rather than for daily or constant use. Production setups will often contain a riveter which is a larger floor standing unit; this unit will have an arm that the operator can press down to push the die down towards the material to be riveted.
The mold will essentially crash into a metal base, with the materials and rivet placed between the mold and the base. This will flatten the rivet just enough to secure it in place. Other machines work differently and are designed to be used with specific types of rivets. Pop rivets, for example, feature a hollow tube that is inserted into a pre-drilled hole. A special rivet press tool is then used to drive a mandrel into the tube; the other end of the rivet will break off, completing the riveting process.
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