How do I calculate machining time for milling?

For milling: t = L / vf, where L is the total cut length in mm and vf is the table feed rate in mm/min. Include approach and overrun distances.

How do I calculate machining time for turning?

For turning: t = (L + approach) / (f × n), where L is cut length, f is feed per revolution, and n is spindle RPM.

What is approach distance?

Approach distance is the extra travel needed before the tool engages the workpiece. It includes rapid approach clearance and the tool lead-in. Typically 2–5 mm.

Does the formula account for rapid moves?

No. The machining time formula only covers cutting time. Total cycle time also includes rapid positioning, tool changes, and idle time.

How do I reduce machining time?

Increase feed rate (higher fz or more flutes), use higher cutting speeds with appropriate tooling, minimize the number of passes, and optimize tool paths.

मोफत अभियांत्रिकी साधन #208

मशीनिंग वेळ कॅल्क्युलेटर

मिलिंगसाठी (t = L / vf) आणि टर्निंगसाठी (t = (L+approach) / (f × n)) कटिंग वेळ मोजा. कट लांबी आणि फीड पॅरामीटर्स प्रविष्ट करा.

t = L / vfमिलिंग & टर्निंगस्वयंचलित गणना

ऑपरेशन

कट लांबी (mm)

अप्रोच अंतर (mm)

फीड रेट (vf) (mm/min)

पासांची संख्या

Quick presets

Results

एकूण मशीनिंग वेळ

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प्रति पास वेळ

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प्रभावी फीड

—

मिलिंग वेळ

टर्निंग वेळ

उदाहरण — 200 mm स्लॉटचे मिलिंग

Given: L = 200 mm, approach = 3 mm, vf = 400 mm/min, 1 पास

t = (200 + 3) / 400 = 0.508 min ≈ 30.5 sec

Machining Time Calculator | t = L / vf | Free Online Tool

Published by Nikolai Shelkovenko on फेब्रुवारी 15, 2026 फेब्रुवारी 15, 2026

Results

मिलिंग वेळ

टर्निंग वेळ

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