CNC Cutting Tools and Tooling

Question 1

What is the primary purpose of the rake angle on a cutting tool?

Accepted Answer

To control chip flow and cutting forces

Answer

To increase tool rigidity

Answer

To determine the tool's coating type

Answer

To set the tool height above center

Question 2

Which carbide insert designation describes a triangular insert shape?

Accepted Answer

T

Answer

S

Answer

C

Answer

R

Question 3

What is the main advantage of using coated carbide inserts over uncoated ones?

Accepted Answer

Increased hardness and wear resistance at elevated temperatures

Answer

Lower cost per insert

Answer

Improved chip breaking only

Answer

Reduced need for coolant

Question 4

In end mill selection, what does the term 'helix angle' refer to?

Accepted Answer

The angle of the flutes relative to the tool axis

Answer

The taper of the shank

Answer

The number of cutting edges

Answer

The tool's reach below the holder

Question 5

What type of end mill is best suited for cutting aluminum at high speeds?

Accepted Answer

2-flute high-helix end mill

Answer

4-flute carbide end mill

Answer

Ball-nose end mill with TiN coating

Answer

Cobalt steel end mill

Question 6

What is the purpose of a center-cutting end mill designation?

Accepted Answer

The tool can plunge directly into material

Answer

The tool can be used for thread milling

Answer

The tool has reinforced center core

Answer

The tool is designed for centerline profiling only