MAKING Flashcards
1
Q
WHAT IS A CONTROL SYSTEM
A
when you need to repeat a task (template)
2
Q
A CONTROL SYSTEM SHOULD BE……..
A
- be used repeatedly without breaking
- easy to use
- quick and accurate
- cheap
3
Q
5 DIFFERENT CONTROL SYSTEMS
A
- Template
- Jig (drilling jig)
- Pattern (casting)
- Former (laminating)
- Mould (vaccum)
4
Q
RESTING- AND ADVANTAGES
A
- using as little material as possible
- reduces waste
- saves money
- redues energy
5
Q
PEWTER CASTING
A
- mould with a riser to let the air escape
- melt the pewter with a hot air gun in a copper dish
- pour into mould and cool it
6
Q
DIE CASTING
A
- pouring molten metal into a hydrolic system
- rams it into the split mould
7
Q
SAND CASTING
A
- wooden mold pressed into dsmp sand
- add risers and put the two halves of the moulds together
- pour molten metal
- wait till cooled
8
Q
CENTRE-LATHE- headstock
A
provides the power
9
Q
CENTRE-LATHE- chuck
A
holds the work securely
10
Q
CENTRE-LATHE- slides
A
allows the tool to be controlled when cutting
11
Q
CENTRE-LATHE- tool post
A
HSS cutting tool in a cast-iron holder
12
Q
CENTRE-LATHE- tailstock
A
holds the Jacobs chuck
13
Q
CUTTING A THREAD
A
a way of joining metal bar and metal sheet/ block together, so that they can be taken apart again
-TEMPORARY FIXING
14
Q
TAPPING
A
- taper
- second (intermediate)
- plug
15
Q
TAPPING PROCESS
A
- drill hole (use tapping chart for size)
- put taper tap into tap wrench
- keep level and turn slowly
- do a “half a turn back”
- repeat with second and plug tap
