Components Flashcards
What are nuts and bolts manufactured from ?
Low or medium carbon steel:
What are the 5 threads ?
Screw thread, V-thread, acme thread, square thread, buttress thread.
What is the correct term for putting a thread into a hole ?
Tapping
How can a thread be cut onto a rod ?
By hand using a tap and die or by using a metalworking lathe.
Why are spacers and washers used ?
Spacers are user in situations where components need to be separated, such as bike gears.
Washers can also be used as spacers or anti-vibration devices.
What are the two types of screws ?
Machine screws and wood-screws.
What are machine screws manufactured from ?
Carbon steel.
Why are countersunk screws designed ?
To allow the screw to flush with the surface.
What are cheese head screws ?
Screws that have a cylindrical in shape and sits above the metal.
What are the 3 different head shapes for wood screws ?
Countersink head, raised head and round head.
What is riveting ?
Riveting is a method of making a permanent joint in metal.
What are the two types of rivets ?
Solid routes and Pop rivets.
What are solid rivets manufactured from and why ?
Solid rivets are manufactured from soft iron because they need to be ductile and easy to work as they have to be hammered into shape.
What are pop rivets manufactured from and why ?
Pop rivets are manufactured from aluminium and are fixed into place using a pop rivet gun.
Why are gears used ?
Change direction of rotary motion, change spindle speeds and transmit motion through 90*.
