Cold Riveting Riveting Machine Technology Parameters
Cold riveting is a fastening method in which a pre-stressed clamp is used to form a head of a pre-clamped joint member by squeezing while the other end is cold-screwed. Cold riveting is also known as cold forming, cold fastening, and cold crimping. Cold riveting has the advantages of being able to form a strong joint, eliminating the need to drill holes, and having quick installation.
The cold forming process is defined as the plastic deformation of a rivet by applying compressive axial force with a cold forming machine. The cold forming process is used to join two parts together, typically components of an electrical device enclosure, or components of a motor vehicle, such as a radiator or headlight. The deformation of the rivet is achieved by applying a specific amount of force to the rivet between two dies.
Cold forming machines come in a variety of sizes, configurations and orientations, including vertical, horizontal, and even multi-axis configurations. The choice of machine best suited for a particular application will depend on the size, configuration, and material of the part to be riveted.
Vertical cold forming machines are best used for small parts that require accuracy, as they allow for more precise control of the riveting process. Horizontal cold forming machine are most often used for larger parts, as they are able to apply more force to the rivet. Multi-axis cold forming machines are best suited for more complex shapes.
When selecting a cold forming machine, it is important to consider the materials of construction and accessories that are available. Common materials of construction include steel and aluminum, as well as various grades of stainless steel. There are also a variety of accessories, such as feeding and lubricating systems, which can be used for the riveting operation.
When specifying the tooling for a cold forming machine, it is important to consider the size of the part to be riveted, the type of rivet, and the shape of the part. The size of the part will determine the size of the dies, while the type of rivet will determine the type of die that is used. The shape of the part will determine the shape of the punch and die.
To ensure the quality of the riveted joints, it is important to pay attention to the parameters of the cold forming process. The key parameters to note are the total force applied to the rivet, the rate of speed of the dies, and the sequence of movements of the die. It is also important to ensure that the ambient temperature is kept at a steady level, as temperature fluctuations can have an impact on the quality and durability of the joint.
By paying attention to all of the key parameters of the cold forming process, it is possible to ensure high quality and repeatable results with a cold forming machine. Cold riveting machines are a highly efficient way to form strong and reliable joints between two components, saving time and money in the long run.
