How To Get Accurate Machining Time Estimates Using the Toolpath Summary in Carveco

Overview

Carveco includes a built-in Toolpath Summary feature that estimates machining time. However, to get reliable results, you’ll need to calibrate it using a time scale factor based on your CNC machine’s speed. This tutorial walks you through the process of fine-tuning your time estimates for more accurate job planning.

Using the Toolpath Summary

1. Click the Toolpaths tab.
2. Select the Toolpath Summary icon.
3. A new window appears showing:
   • Total estimated machining time
   • Time breakdown for each toolpath

You can save or print the summary for future reference, but be aware: the initial time estimates may be inaccurate without calibration.

Why Time Estimates May Be Incorrect

By default, Carveco doesn't know how fast your CNC machine performs rapid movements. Without this, the estimated times may appear far too long or too short.

Step 1: Enter a Time Scale Factor

1. In the Toolpath Summary window, set the Time Scale Factor to 1.
2. Click Calculate to get a more realistic base estimate.

This uses the toolpath length and feed rate to estimate time — but it’s still just a guess until you calibrate.

Step 2: Add Your CNC’s Rapid Rate

1. Enter your machine’s rapid rate into the summary — e.g., 50 meters per minute.
2. Click Calculate again. This updates the estimate with your machine's known movement speed.

Step 3: Calibrate With Real Timing

1. Choose one toolpath to test — for example, your roughing toolpath.
2. Record its estimated time from the summary — e.g. 5 minutes, 14 seconds.
3. Run the job on your machine while timing it with a stopwatch.
4. Divide the actual time by the estimated time to get a Time Scale Factor.
5. Enter this new factor into the summary and recalculate.

Summary