DT Flashcards

1
Q

Name some advantages of 3D modelling

A

Provides a 3D perspective
Easy to remove defects
Can be cheaper in some circumstances
More efficient

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2
Q

Name some disadvantages of virtual modelling

A

Takes skill and software knowledge about the program
Software may be expensive

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3
Q

What is meant by an ergonomic design?

A

A design that accounts for the human environment

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4
Q

What is anthropometrics

A

A branch of ergonomics referred to as the standard measurements used to identify the most ergonomic fashion in varying products

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5
Q

What does CNC stand for?

A

Computer Numerical Control

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6
Q

What is the programming language that CNC machinery uses to convey operations

A

G-code

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7
Q

What are some advantages of CNC

A

no room for human error
Minimal wastage
Fast production
Reduced production cost

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8
Q

What are some disadvantages of CNC

A

Expensive equipment
Reliant on manual supervision
Recruitment decline ( as in jobs )
Can be energy extortionate

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9
Q

How does the CNC lathe work?

A
  • spins the piece on an axis allowing you to manipulate it to your favour
  • allows you to drill, trim and resize you product
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10
Q

How does the CNC router work?

A
  • moves along the x,y and z coordinates
  • allows you to visualise your product in a 3D observatory format
  • used to cut shapes and or sections out of your piece
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11
Q

How does the 3D printer work?

A
  • Send data from the CAD software to the slicing software
  • this data is then sent to the printer
  • plastic is heated and to an average of 300 degrees and shelved layer upon layer until the prototype is fully moulded.
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12
Q

What does CAM stand for?

A

Computer Aided Manufacture

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13
Q

What is a ferrous metal?

A

A metal consisting of iron as its primary material

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14
Q

What are some examples of ferrous metals?

A

Steel, carbon steel

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15
Q

What are some properties of ferrous metals?

A
  • highly durable / rigid
  • rusts / corrode
  • magnetic
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16
Q

What is a non-ferrous metal?

A

A metal consisting of close to no iron

17
Q

What are some examples of non-ferrous metals?

A

Aluminium, copper, silver, gold, bronze

18
Q

What are some properties of non-ferrous metals?

A
  • Malleable
  • Ductile
  • valuable ( in most cases )
  • non-magnetic ( pure, good for jewellery )
  • oxidise ( react with oxygen over time )
19
Q

What are common example of hard woods?

A

Beech, mahogany and oak

20
Q

What are working properties of hardwoods?

A
  • durable
  • expensive
  • hard/tough
  • dense
21
Q

What are some pros of hardwoods?

A
  • luxury ( expensive)
  • strong
22
Q

What are some cons of hardwoods?

A

They are expensive

23
Q

What are some common examples of softwoods?

A

Spruce, pine and fir

24
Q

What are some working properties of softwoods.

A
  • durable / tough
  • impact resistant
  • light weight
25
Q

What are some pros of softwoods?

A

Cheap, light, durable

26
Q

What are some cons of softwoods?

A

Fairly weak, less durable, prone to decay