1. What is Thread Turning Infeed Depth?

The infeed depth calculation determines how deep the cutting tool needs to penetrate to create a proper thread profile, specifically for 60° threads (the most common thread angle).

2. How Does the Calculator Work?

The calculator uses the thread turning formula:

Where:

• 0.6495 — Constant factor for 60° threads
• Pitch — Distance between thread crests (mm)
• 30° — Half of the thread angle (60° total)

Explanation: The formula calculates the theoretical depth needed to create a perfect 60° thread profile based on the specified pitch.

3. Importance of Accurate Infeed Calculation

Details: Proper infeed depth ensures correct thread strength and fit. Too shallow results in weak threads, while too deep wastes material and may weaken the workpiece.

4. Using the Calculator

Tips: Enter the thread pitch in millimeters. The pitch is typically specified in thread standards (e.g., 1.5mm for M10x1.5).

5. Frequently Asked Questions (FAQ)

Q1: Why is the angle 30° in the formula?
A: The formula uses half of the 60° thread angle (30°) for the trigonometric calculation.

Q2: Does this work for all thread types?
A: This specifically calculates for 60° threads (most metric and unified threads). Other angles require different formulas.

Q3: Should I use this exact depth in practice?
A: This is the theoretical depth. In practice, you may need multiple passes with decreasing depth for optimal results.

Q4: How does this relate to thread percentage?
A: The 0.6495 factor gives approximately 75% thread depth, which is common for general applications.

Q5: What about thread crest and root?
A: This calculates depth to the pitch diameter. Additional considerations may be needed for specific crest/root requirements.