1. What is Turning Feed Rate?

Turning feed rate is the linear distance the cutting tool travels along the workpiece per minute during a turning operation. It's a critical parameter in machining that affects surface finish, tool life, and machining time.

2. How Does the Calculator Work?

The calculator uses the feed rate formula:

Where:

• \( RPM \) — Rotations per minute of the workpiece
• \( Feed\ per\ Revolution \) — Distance the tool advances per revolution (in/rev)

Explanation: The formula calculates how fast the cutting tool moves along the workpiece based on spindle speed and the feed rate per revolution.

3. Importance of Feed Rate Calculation

Details: Proper feed rate selection is crucial for achieving desired surface finish, maintaining dimensional accuracy, optimizing tool life, and ensuring efficient material removal rates in turning operations.

4. Using the Calculator

Tips: Enter RPM (rotations per minute) and feed per revolution (in/rev). Both values must be positive numbers. The calculator will compute the feed rate in inches per minute.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect feed rate selection?
A: Material type, cutting tool material, desired surface finish, depth of cut, and machine tool capabilities all influence optimal feed rate selection.

Q2: How does feed rate affect surface finish?
A: Higher feed rates typically produce rougher surfaces, while lower feed rates create smoother finishes but increase machining time.

Q3: What are typical feed per revolution values?
A: Feed per revolution typically ranges from 0.001 to 0.030 inches depending on material, tooling, and operation requirements.

Q4: Can I use this calculator for metric units?
A: This calculator uses imperial units (inches). For metric calculations, convert mm/rev to in/rev or use a metric-specific calculator.

Q5: How does feed rate relate to chip load?
A: In single-point turning, feed per revolution is equivalent to chip load - the thickness of material removed by each cutting edge per revolution.