1. What is Cutting Speed?

Cutting speed (surface speed) refers to the speed difference between the cutting tool and the surface of the workpiece. It's measured in meters per minute (m/min) and is a critical parameter in machining operations.

2. How Does the Calculator Work?

The calculator uses the cutting speed formula:

Where:

• \( v \) — Cutting speed (m/min)
• \( D \) — Tool diameter (mm)
• \( N \) — Spindle speed (rpm)

Explanation: The formula converts the rotational speed of the tool into linear speed at the cutting edge, accounting for the tool diameter.

3. Importance of Cutting Speed

Details: Proper cutting speed ensures efficient material removal, prolongs tool life, and maintains good surface finish. Too high speed causes excessive heat and tool wear, while too low speed reduces productivity.

4. Using the Calculator

Tips: Enter tool diameter in millimeters and spindle speed in RPM. Both values must be positive numbers. The calculator will compute the cutting speed in meters per minute.

5. Frequently Asked Questions (FAQ)

Q1: What are typical cutting speeds for different materials?
A: Aluminum: 200-300 m/min, Steel: 50-150 m/min, Titanium: 30-60 m/min. Always consult tool manufacturer recommendations.

Q2: How does tool material affect cutting speed?
A: Harder tool materials (carbide, ceramics) allow higher speeds than HSS tools. Coatings can further increase speed capabilities.

Q3: What's the relationship between cutting speed and feed rate?
A: Feed rate (mm/rev or mm/tooth) should be balanced with cutting speed for optimal chip formation and tool life.

Q4: Why convert to m/min from mm and rpm?
A: m/min is a standard unit that allows comparison across different tool diameters and machine setups.

Q5: How does cutting speed affect surface finish?
A: Generally, higher speeds produce better finishes up to a point, but excessive speed can cause vibration and poor finish.