Milling Operations Calculator

➔ Cutting Operation
➔ Facing Operation
➔ Calculate Total Time for Milling Operation

Cutting Operation

Facing Operation

Calculate Total Time for Milling Operation

Time Required for Cut = Length of Cut / (Feed/Rev). × r.p.m.
Total Time = Length of Cut / (Feed/Min). × Number of Cuts

Length of job:

Feed/tooth:

Number of teeths on cutter:

Revolution of job/min.(r.p.m.):

Feed/Min.:

Number of Cuts:

Length of Cut:

Feed/Rev.:

Added Table Travel:

Time Required for Cut:

Total Time:

In milling operations, the time required for a particular operation can be calculated based on several factors. Here's a breakdown of the basic calculations for cutting operations and facing operations.

1. Cutting Operation Time Calculation

For cutting operations, the time can be calculated using the following formula:

Where:

= Cutting time (in minutes)
= Length of the cut (in mm or in)
fz = Feed per tooth (in mm/tooth or in/tooth)
= Number of revolutions per minute (RPM)

To calculate RPM, use the formula:

Where:

Vc = Cutting speed (in m/min or ft/min)
= Tool diameter (in mm or inches)
= 3.1416

2. Facing Operation Time Calculation

For a facing operation, the time to complete a pass is calculated as:

Where:

= Facing time (in minutes)
= Diameter of the workpiece (in mm or inches)
fz = Feed per tooth (in mm/tooth or in/tooth)
= Number of revolutions per minute (RPM)

3. Total Milling Operation Time Calculation

If you want the total milling time for an operation, simply sum up the times for cutting and facing, or any other specific operations involved. For example:

Example Calculation:

Let's say you are milling a piece with the following data:

Cutting speed (Vc): 100 m/min
Tool diameter (): 10 mm
Feed per tooth (fz): 0.1 mm/tooth
Length of cut (): 200 mm
Workpiece diameter (): 50 mm

Calculate RPM using the formula for nn:

Cutting Time:

Facing Time:

Total Milling Time: