Cutting Tools and Tooling Flashcards

What is the advantage of a high-positive rake angle on a cutting insert?

Answer: Lower cutting forces and better surface finish on soft materials

High-positive rake angles reduce cutting forces and generate less heat, making them ideal for soft, gummy materials like aluminum and plastics.

Which tool holder style uses friction from a collet to grip the cutting tool?

Answer: ER collet chuck

An ER collet chuck uses a tapered collet that compresses uniformly around the tool shank when tightened, providing accurate and secure gripping.

What is the primary benefit of a shrink-fit tool holder compared to a collet chuck?

Answer: Superior concentricity and vibration damping

Shrink-fit holders thermally expand to accept the tool shank, then contract tightly around it, providing exceptional concentricity and rigidity.

What does TiAlN coating on a cutting tool provide that TiN alone does not?

Answer: Better performance at higher temperatures due to aluminum oxide formation

TiAlN forms a layer of aluminum oxide (Al2O3) at high temperatures, acting as a thermal barrier that allows the tool to withstand much higher cutting temperatures.

In indexable tooling, what does ISO insert size code '16' typically represent?

Answer: The insert cutting edge length is approximately 16mm (or 5/8 inch)

In ISO insert nomenclature, the size number refers to the inscribed circle (IC) or cutting edge length, with '16' indicating approximately 16mm.

Which type of milling cutter is used to machine a flat surface perpendicular to the spindle axis?

Answer: Face mill

A face mill has cutting inserts arranged on its face and periphery, specifically designed to machine large flat surfaces quickly and efficiently.