Manufacturing Engineering

Machining Time Simulator

Analyze lathe turning operations. Control workpiece diameter, cut length, feed rate, depth of cut, and spindle RPM to investigate machining time, material removal rate, and cutting power requirements.

Workpiece

Mild Steel

Hardness: 180 HB

Machining State

High Speed

Excessive tool wear

Output

CSV

Data export ready

Parameters

Workpiece Material

Length of Cut150 mm

10500

Workpiece Diameter60 mm

20200

Feed Rate0.20 mm/rev

0.051

Spindle Speed (RPM)1200 RPM

1004000

Depth of Cut (ap)1.50 mm

0.25

Simulate Cutting Carriage Pass

Metal Cutting Formulas

Machining Time

Tc = L / (f * N)

Cutting Speed

Vc = (π * D * N) / 1000

Material Removal Rate

MRR = π * (D - ap) * ap * f * N / 1000

Spindle Machining Power

Pc = (MRR * Kc) / 60

Machining time for a single carriage pass is 0.625 minutes (37 seconds).

Cutting speed is 226.2 m/min, compared to optimal recommended speed range 80-150 m/min.

Specific energy constant for Mild Steel is 2000 N/mm², resulting in a cutting power requirement of 2205.40 kW.

Lathe Turning Workpiece Setup

Machining Time

0.625min

Cutting Speed (Vc)

226.2m/min

Removal Rate (MRR)

66.2cm³/min

Required Spindle Power

2205.40kW

Machining Time & Cutting Speed vs Spindle Speed

Spindle Speed Sweep Data

Spindle Speed (RPM)	Machining Time (min)	Cutting Speed (m/min)	MRR (cm³/min)
400	1.875	75.4	22.1
760	0.987	143.3	41.9
1120	0.670	211.1	61.8
1480	0.507	279.0	81.6
1840	0.408	346.8	101.4
2200	0.341	414.7	121.3
2560	0.293	482.5	141.1
2920	0.257	550.4	161.0
3280	0.229	618.3	180.8
3640	0.206	686.1	200.7
4000	0.188	754.0	220.5