Cutting Tools and Tooling Flashcards
6 cards from real CNC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Cutting Tools and Tooling flashcards as text
What is the primary purpose of the rake angle on a cutting tool?
Answer: To control chip flow and cutting forces
The rake angle controls how the chip flows away from the cutting edge and directly affects cutting forces and tool life.
Which carbide insert designation describes a triangular insert shape?
Answer: T
In the ISO insert designation system, 'T' denotes a triangular (equilateral triangle) insert shape with three cutting edges.
What is the main advantage of using coated carbide inserts over uncoated ones?
Answer: Increased hardness and wear resistance at elevated temperatures
Coatings like TiN, TiAlN, and Al2O3 significantly improve hardness and thermal resistance, extending tool life and allowing higher cutting speeds.
In end mill selection, what does the term 'helix angle' refer to?
Answer: The angle of the flutes relative to the tool axis
The helix angle is the angle of the flutes (cutting edges) relative to the tool's central axis, affecting chip evacuation and cutting forces.
What type of end mill is best suited for cutting aluminum at high speeds?
Answer: 2-flute high-helix end mill
A 2-flute high-helix end mill provides large flute valleys for superior chip evacuation, which is critical when cutting aluminum at high speeds.
What is the purpose of a center-cutting end mill designation?
Answer: The tool can plunge directly into material
A center-cutting end mill has a cutting edge that extends to the center, allowing it to plunge directly into the workpiece like a drill.