Calculate cutting time from cut length and feed rate times the number of passes, with optional pierce and handling time, parts per hour and batch time.

Constant linear feed estimate. Enter travel speed along the cut, rather than spindle RPM or tool surface speed. Acceleration, setup and tool changes are included only if you add them to handling time.

One pass by default; the same length is repeated each pass.

Piercing, handling and batch

Blank = 0; count all passes once.

Blank = 0 seconds. Enter a time when pierce count is positive.

Blank = 0 seconds.

Blank = 1 part; setup between batches is not included.

Cutting Time Formula

The following formula is used to calculate cutting time:

CT = L / CS
  • Where CT is the cutting time (min)
  • L is the length of the workpiece
  • CS is the linear feed along the cutting path (distance/min), not spindle RPM or tool surface speed

To calculate the cutting time for a single pass, divide the total length of the workpiece by the cutting (linear travel) speed. For multiple passes over the same length, multiply the single-pass time by the number of passes.

What is cutting time?

Definition:

Cutting time is the time spent moving along the cut at a constant linear feed. This calculator adds the optional piercing and handling times to obtain total cycle time. Setup and tool changes are excluded unless entered in handling time.

How to calculate cutting time?

Example Problem:

The following example problem outlines how to calculate the cutting time of a machine.

First, determine the overall length of the workpiece. In this case, the piece of material is measured to have a length of 6 inches.

Next, determine the cutting speed. This would be the linear distance travelled along the cut per unit time.

In this case, the cutting speed is 2 inches per minute.

Finally, calculate the cutting time using the formula above:

CT = L / CS

CT = 6 / 2

CT = 3 minutes