This gun is different from the above rivet guns in that the air pressure is used to provide a squeezing action that compresses the rivet from both sides rather than distinct blows. The rivet is driven at right-angles to handle by a very short barreled driver. The corner riveter is a compact rivet gun that can be used in close spaces. The fast-hitting gun, sometimes referred to as a vibrator, is generally used with softer rivets. These are repeated in the range of 2,500 to 5,000 bpm.
The fast-hitting gun strikes multiple light-weight blows at a high rate as long as the trigger is held down. This is probably the most common type of rivet gun in use.
It is easier to control than a one-hit gun. The repetition rate is about 2,500 blows-per-minute (bpm). The slow-hitting gun strikes multiple blows as long as the trigger is held down. The piston is returned to the original position by a spring or the shifting of a valve allowing air to drive the piston back to the starting position. The bucking bar deforms the tail of the rivet. The force on the rivet set pushes the rivet into the work and against the bucking bar. The piston strikes against the rivet set. As the piston moves, a port opens allowing the air pressure to escape. When the trigger is squeezed, the throttle valve opens, allowing the pressurized air to flow into the piston. Regulated air entering passes through the throttle valve which is typically controlled by a trigger in the hand grip. Pneumatic rivet guns typically have a regulator which adjusts the amount of air entering the tool. Rivet guns vary in size and shape and have a variety of handles and grips. A rivet gun differs from an air hammer in the precision of the driving force. Those rivet guns used to drive rivets in structural steel are quite large while those used in aircraft assembly are easily held in one hand. Nearly all rivet guns are pneumatically powered. At the same time the work is tightly drawn together and retained between the rivet head and the flattened tail (now called the shop head, or buck-tail, to distinguish it from the factory head). As a result, the tail of the rivet is compressed and work-hardened. The energy from the hammer in the rivet gun drives the work and the rivet against the bucking bar. The rivet gun is used on rivet's factory head (the head present before riveting takes place), and a bucking bar is used to support the tail of the rivet.
(December 2014)Ī rivet gun, also known as a rivet hammer or a pneumatic hammer, is a type of tool used to drive rivets. Brown at Colonna's Shipyard, a ship repair facility located in the Port of Norfolk, Virginia. Hansen Industries work on the Liberty ship SS John W.
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