23 August CNC Programming Part 2

1. Which of the following is the first stage in the milling process?

• Finishing

• Semi-Finishing

• Roughing

• Contour Milling

2. What is the primary goal of the finishing stage in milling?

• Remove large amounts of material

• Create slots and pockets

• Produce a smooth and accurate surface

• Define the initial shape of the part

3. What type of milling involves using the side of the cutting tool to machine tilted walls?

• Slot Milling

• • Contour Milling

• Spiral Roughing

• Swarf Cutting

4. Which milling strategy reduces machining time by minimizing air moves and maintaining a consistent load on the cutter?

• Spiral Roughing

• Helical Drilling

• Finishing

• Roughing

5. What is the advantage of using helical interpolation in drilling?

• Higher tool wear

• Inconsistent depth of cut

• Longer tool life and better chip control

• Slower metal removal rates

6. High Speed Steel (HSS) is primarily made from tool steel with the addition of which of the following elements?

• Nickel, Copper, Zinc

• Titanium, Chromium, Aluminum

• Carbon, Tungsten, Chromium

• Molybdenum, Titanium, Nickel

7. What property allows High Speed Steel (HSS) to cut metal at high speeds without losing hardness?

• Red-Hardness

• Brittleness

• Wear Resistance

• Tensile Strength

8. Which cutting tool material is known for its extreme hardness and ability to handle high cutting speeds?

• High Speed Steel (HSS)

• Cemented Carbide

• Cermet

• Polycrystalline Diamond (PCD)

9. Which material is commonly used to coat carbide tools to improve wear resistance?

• Nickel

• Aluminum Oxide

• Copper

• Tungsten

10. Cermet tools are primarily used for which type of operations?

• Roughing

• Heavy Cutting

• Finishing and Fine-Finishing

• Slot Milling