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Development and working principle of blind rivets
- 2022-03-04-

The earlier rivets were small nails made of wood or bone, and the very early metal deformers were probably the ancestors of the rivets we know today. There is no doubt that they are the oldest known method of joining metals, dating back to malleable metals For example, in the Bronze Age, the Egyptians riveted together 6 wooden sectors on the outer line of the slotted wheel, and the Greeks succeeded in casting large statues in bronze, then riveting all the parts together with rivets.

In 1916, when HVWhite of the British aircraft manufacturing company began to patent blind rivets that could be riveted on one side, it was hardly expected that such rivets would be used so widely today. From aerospace to office machines, electronics, playgrounds It can be said that this blind rivet has become an effective and stable mechanical connection method.

Most blind rivets were invented for making or repairing harnesses. It's not clear when hollow rivets were invented, but harnesses were invented in the 9th or 10th century AD. Riveted harnesses, like those with nails Horseshoes, freed slaves from heavy labor. Rivets also led to many important inventions, such as iron pliers for copper and iron workers and shears for shearing wool.

The working principle of blind rivets is realized by pulling the core head with a force from the inside to the outside. If you want to make better use of blind rivets, you must first understand the working principle in detail.

Open oval head blind rivets have a wide range of applications, countersunk head blind rivets are suitable for riveting occasions where smooth surfaces are required, and closed blind rivets are suitable for riveting occasions that require high load and certain sealing performance.

The riveting of blind rivets is to use a metal cylindrical or metal tube (rivet) with a diameter slightly smaller than the perforation to pass through the workpiece to be riveted, knock or pressurize the 2 end faces of the rivet, deform and thicken the metal column (tube), and form a rivet at the two ends. Head (cap), so that the workpiece can not be released from the rivet. Under the action of the external force to separate the workpiece, the nail rod and the nail cap are subjected to shearing force to prevent the workpiece from separating.


抽芯铆钉