## Step 8: Measure the Master Flank (Bevel Gear Only)

You need to follow this step only when working with a bevel gear.

To measure a bevel gear, you need to enter master flank data. You can either import the master flank data (see "Step 6: Define the Gear"), or generate it. This step describes how to generate the master flank data.

You will need to measure the master flank in order to create a master flank data file. To measure the master flank and create master flank data:

1. Select the Operation | Create Master Flank Data… menu option to open the Measure master flank data dialog box:

Measure master flank data dialog box

2. Specify the values for the options in the Measure master flank data dialog box. See "Defining Master Flank Data" for more information on the options.

3. To apply the changes you made, click the Apply button.

4. Click Measure.

When master flank data is not available, a message appears and indicates that no nominal master flank data input exists. It also asks if you are going to create master flank data now:

To create the data, select Yes.

5. PC-DMIS launches in the background to execute measurement. Following is an example for a straight flank:

Master flank measurement

6. Select the tip to measure the specified hits. Follow the instructions and measure the specified hits to establish the Master Flank. The left and right flanks of a gear are defined as shown in the image below.

A - Gear
B - Left
C - Right

7. To remove a previous hit, click Del Pnt.

8. When you have finished taking hits, click Measure. PC-DMIS Gear will generate a program to re-measure the points on each flank automatically. You will be prompted to start measurement.

9. Click Yes; PC-DMIS will run your part program automatically. To cancel the measurement, click No.

Step 9: Measure the Gear...