manufacturing - machining

Question 1

Name some non-traditional cutting methods.

Answer 1

• plasma cutting (2D)
• laser cutting (2D)
• Milling (3D)
• Lathe (3D)
• water jet cutting (2D)

Question 2

What is laser cutting?

Answer 2

• uses high powered laser beam to cut through materials

Question 3

Pros and cons of: Laser cutting.

Answer 3

Pros:
1. flexible
2. precise
3. low tolerance
4. speed
5. little man labour
6. small burrs
Cons:
1. material thickness
2.harmful gas and fumes
3. high energy
4. high upfront costs

Question 4

Pros and cons of: Plasma cutting

Answer 4

Pros:
1. machine can be portable
2. easy to learn
3. precise
4. fast
Cons:
1. must be a conductive material
2. might not be suitable for thicker material
3. noise and fumes
4.not as good quality as laser cutting
5. consumables can be pricey

Question 5

What is plasma cutting?

Answer 5

• thermal cutting that uses jet of gas to cut through conductive materials.

Question 6

What is milling?

Answer 6

• uses rotating cutter to remove material from a workpiece.
• subtractive manufacturing

Question 7

Pros and cons of: Milling

Answer 7

Pros:
1. precision
2. fast and efficient
3. wide range of materials
4. 3D manufacturing

Cons:
1. high set up times
2. maintenance costs
3.

Question 8

what is lathing?

Answer 8

• rotating workpiece
• uses cutter to remove material
• ideal for symmetrical pieces

Question 9

pros and cons of: lathing,

Answer 9

Pros:
1. high quality products
2. high speed
3. cnc - reduced labour costs
4. high repeatability
5. suitable for complex design

Cons:
1.limited to round objects
2. risk of injury - heavy tools / sharp materials
3. high initial costs
4. skilled operator
5. noise and vibration

Question 10

Name some common Post Processing Methods.

Answer 10

1. Filing
2. Sanding
3. Grinding
4. Drilling
5. Tapping