Mechanical Joining

Mechanical Joining

Rivets

Pop Riveting

Pop riveting is used to join two pieces of sheet metal through a blind hole. The head of the rivet is put into the holes in the pieces of sheet metal and the mandrel is pushed inside the nozzle of the rivet gun. The levers on the rivet gun are then squeezed and the mandrel is pulled out. This pulls the head of the rivet inwards, causing it to expand outwards. The mandrel will the snap off and the rivet will be stuck in place in the hole.

Riveting

Crimping

Crimping tool:

crimping tool

Crimping process

crimping

A crimping tool is used to deform one material onto another. For example, a metal tube onto electrical wire

The two parts are put together, put into the appropriate part of the crimping tool and the levers are pressed


Buttress thread

Buttress thread real life Buttress thread diagram

A buttress thread can withstand a lot of force in one direction. The flat faces of the screw can hold the weight of something/hold something in position.

For example, this type of screw thread is commonly used in a vice as once it is tightened, it can hold the force exerted by the vice. It will not come loose, as the pressure from holding a material rests on the flat faces of the thread. It is also commonly used in vertical applications, such as lifting machines such as forklifts.


Nuts & Bolts

Advantages:

Quick and easy to, doesn't require skilled worker, temporary joint can be undone, very practical in a lot of cases

Disadvantages

Can come loose, some cases need a permanent joint, requires space/clearance for the nut and bolt to go, bulky


Screws

Duno what you need to know really, guess it's kinda obvious

Just remember it is a type of mechanical joining