Riveting machines
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Riveting machines are used to automatically set (squeeze) rivets in order to join materials together.
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[edit] Contrast with other methods
The riveting machine offers far greater consistency, quality and productivity when compared to traditional methods of setting rivets such as a hand held hammer and peen (forming tool), or press. Automatic riveting machines include a hopper and feed track which automatically feeds and presents the rivet to the setting tools which overcomes the need for the operator to position the rivet. The automatic machine has a motor or pneumatic cylinder fitted which is used to provide the energy required to set the rivet. Manual riveting machines usually have a mechanical lever to deliver the setting force from a foot pedal. The manual riveting machine does not have an automatic rivet feed system.
[edit] Types
Riveting machines can be sub-divided into two broad groups — impact riveting machines and orbital (or radial) riveting machines.
[edit] Impact riveting
Impact riveting machines set the rivet by driving the rivet downwards, through the materials to be joined and on into a forming tool (known as a rollset). This action causes the end of the rivet to roll over in the rollset which causes the end of the rivet to flare out and thus join the materials together. Impact riveting machines are very fast and a cycle time of 0.5 seconds is typical.
[edit] Orbital riveting
Orbital riveting machines have a spinning forming tool (known as a peen) which is gradually lowered into the rivet which spreads the material of the rivet into a desired shape depending upon the design of the tool. Orbital forming machines offer the user more control over the riveting cycle but the trade off is in cycle time which can be 2 or 3 seconds.
[edit] Radial riveting
Radial riveting is subtly different from orbital forming. Radial riveting lightly peens (hammers) the rivet head into the desired shape whereas orbital forming spreads the rivet head in one, continuous contact, motion.
[edit] Applications
Riveting machines are used in a wide range of applications including brake linings for commercial vehicles, aircraft, and locomotives, textile and leather goods, metal brackets, window and door furniture, latches and even mobile phones. Many materials can be riveted together using riveting machines including delicate and brittle materials, and sensitive electrical or electronic components.
[edit] References
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