## Step 9: Measure the Gear

To measure the gear:

1. Select the Operation | Measure Gear… menu option or the Measure toolbar icon…

…to open the Measure Gear dialog box.

2. For detailed information on measuring the gear, refer to:

1. - Cylinder gear: See "Measuring a Cylinder Gear".

   - Bevel gear: See "Measuring a Bevel Gear".

3. Click Apply to save any changes that you have made, or click Cancel to exit without saving your changes.

4. Click OK to begin the gear measurement process. PC-DMIS launches in the background. When PC-DMIS is ready to execute, it will display a Yes/No message box asking if you are ready to start measurement.

5. Click Yes when ready.

6. If prompted, select the Active Tip and click Measure (or click Cancel to cancel gear measurement).

PC-DMIS will create a part program and measure your gear automatically. The gear part program opens in the instance of PC-DMIS running in the background and informs you that automatic operations are ready to begin. It also prompts you to move the probe to a safe location above the gear.

7. Move the probe to a safe location and then click OK. The Execute dialog box appears and displays messages about the measurement in progress. For example, this message may appear if you are measuring a spiral bevel gear:

Sample Execute dialog box

In this example, you would follow the instructions in the Execute dialog box and take one manual hit on each flank of one tooth. Click Erase Hit to remove the last hit if needed.

Note: Reference points (clocking points) can be taken in ANY order on the tooth or in the gap between the teeth, and it does not matter if the hits are taken clockwise or not.

8. You can press CTRL + W to display the PC-DMIS Probe Readout window while PC-DMIS is measuring your gear. This window displays the following:

- The current XYZ probe position

- The number of hits taken

- The Probe Readout comments, which include the type of measurement (for example: pitch, tip, or root), and the tooth number being measured

For example:

Sample Probe Readout window

The Execution Mode Options dialog box also appears. For example:

Sample Execution Mode Options dialog box

For more information about the Probe Readout window and the Execution Mode Options dialog box, consult the main PC-DMIS documentation.

Step 10: Evaluate the Gear...