A hydraulic riveter joins metal pieces together by pushing rivets together. Rivets come in different sizes and are common in older vehicles and architecture. Riveters can be powered by pneumatic, hydraulic, or electric motors and can finish rivets in different ways. The power of a hydraulic riveter comes from a hydraulic cylinder filled with pressurized liquid.
A hydraulic riveter is a tool that can join pieces of metal together, using hydraulic force to push the connecting rivets together. Rivets are small pieces of metal that look like unthreaded bolts. When driven into a riveter, the narrower, straighter end of a rivet, known as the buck-tail, flattens and expands to create a permanent fastener.
Rivets come in many different sizes, for various applications. An older technology than welding or bolting, rivets are common on vehicles and in architecture made in the early 20th century. Although they have been superseded by more modern techniques, rivets are still regularly used in a variety of manufactured products, ranging from cell phones to airplanes to bridges.
To apply a rivet requires a tool capable of applying a large amount of kinetic force. The small rivets can be applied by hand, with a hammer, or a tool called a tab bar. The larger ones, however, require the use of a specialized riveter, or riveter. The riveters can be powered in different ways: by pneumatic, hydraulic or electric motor. In addition to their driving force, there are several ways a riveter actually finishes a rivet.
A hydraulic riveter can work by impact riveting, orbital riveting or spiral riveting. A hydraulic impact riveter drives a rivet through the materials to be bonded and onto a hard surface which causes the rivet to expand. One type of impact can apply two rivets per second. Impact riveters are used for basic, repetitive jobs where volume, as opposed to aesthetics or fine detail, is key.
An orbital hydraulic riveter is slower to place rivets, but offers more control over the shape of the rivet. While a impact rivet is usually flat, orbital rivets can be rounded. A radial hydraulic riveter works in a similar way, but instead of finishing a rivet in one motion, it uses a hammering motion to shape it. For larger applications, there is yet another type of hydraulic riveter that drills pilot holes before setting and finishing a rivet. These automatic drilling and riveting machines are mainly used in extremely large applications, such as aircraft exteriors.
The power of a hydraulic riveter is provided by a hydraulic cylinder, which is a piston filled with pressurized liquid. Generally an oil type, the liquid is diverted to the other half of the apparatus, a hydraulic pump. The pump regulates the speed and force of the piston movement. It is typically modulated by a pedal or, increasingly, by computer.
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