## Editing Measurement Parameters for Bevel Gears

The Gear Measurement Setup dialog box allows you to edit the parameters and begin gear measurement.

| Clicking the Measure button or selecting the Measure | Measure menu option displays the Gear Measurement Setup dialog box.

Before measuring, ensure that you have first:

- Defined your probe

- Calibrated your probe

- Defined gear parameters

- Created an alignment

Program Files Area

Topography File: The path in this box defines the location of the part program that will be created or opened for measuring topography. Click the Browse button to navigate to and select an existing part program or provide the path and file name to which a new part program file will be saved.

Pitch File: The path in this box defines the location of the part program that will be created or opened for measuring pitch. Click the Browse button to navigate to and select an existing part program or provide the path and file name to which a new part program file will be saved.

Alignment Area

Align File: This box lets you determine the alignment file to be recalled and used in the gear measurement program. By default, PC-DMIS Gear automatically selects the alignment you performed using the Align Gear icon. Use the Browse button to select the alignment file (file with an .aln filename extension). For more information on alignment files, see the topics on saving and recalling alignment files in the main PC-DMIS help file.

Probe Area

Probe File: The path in this box defines what probe file you want to use for the gear’s measurement. Click the Browse button to navigate to and select the probe file to use for the gear’s measurement.

Use multiple tips: Select this option when using multiple tip angles to measure the gear, instead of single angle. For example, when you select Use multiple tips, and set "A" Angle to 90, PC-DMIS Gear will find all of A90BXX angles to measure the gear.

"A" Angle: Provides the "A" angle that will be used to determine the tips angles that will be used to measure your gear.

Analog Probe: Select this option if you will be using an Analog Probe.

Mode: Select either Touch Trigger or Analog Scan to determine how measurement will be taken. The Analog Scan option is only available when the Analog Probe option is selected.

Scan Speed: Provides the speed at which Analog Scans will be performed.

Exec. Mode: DEFINED/RELEARN option: In DEFINED mode Gear will calculate all nominal scan points according to the gear parameters and insert them into the scan command. When executing the scan, PC-DMIS will pass through every point. In RELEARN mode, Gear will also calculate the nominal scan points, but when executing the scan, PC-DMIS will recalculate all scan points according to the start point, the end point and the scan direction. All learned measured data will replace the existing measured data. The Execution Mode options are only available for an Analog Scan mode.

E valuate: When this option is selected, PC-DMIS Gear will automatically evaluate the gear and create a report as soon as the measurement is completed. Otherwise you will need to open the Analyze dialog box to evaluate the gear.

Generate: PC-DMIS Gear will create a new PC-DMIS program at the location(s) specified by in the Topography File and Pitch File fields. The part programs will be created in part based on the Gear Measurement Setup parameters.

Measure: PC-DMIS Gear will open the existing programs specified by the Topography File and Pitch File fields. Most of the options will be unavailable when this option is selected, since the parameters are already defined in the selected part program files. Using an existing part program allows you to measure the gear without needing to take time to generate programs again.

CMM options Area

Prehit Distance: Provides the distance away from the surface where PC-DMIS starts searching for the part.

Retract Distance: Provides the distance the probe retracts from the surface after taking a hit.

Clearance Distance: Specifies the distance the probe will retract after measuring each flank.

Clearance Height: This determines the location above the gear that is considered safe for the probe to change angles.

Touch Speed: Provides the speed at which the CMM takes hits. The value that is entered is a percentage of the maximum machine speed, and cannot exceed twenty percent.

Move Speed: Provides the point to point positioning speed of the CMM. The value that is entered is a percentage of the maximum machine speed. It can be set to any value between 1 and 100% of full machine speed.

Fly On: If you select this option the CMM will move the probe around the part in a smooth and round motion. This option depends on the capability of your controller being able to execute circular moves.

Fly Radius: Determines the radial distance of the arc path along which the probe will travel between move points.

Move out after each row of points measured: This causes the probe to move out to the specified Clearance distance from the gear after each row has been measured.

..Click Master/Flank Setting to open the Master Flank Parameters dialog box to define Master Flank parameters. See "Defining Master Flank Data".

Click Create to begin the gear measurement process. All probing points and the machine movement is generated by PC-DMIS Bevel Gear. You will be prompted to start measurement.

Information Are you ready to start measurement?

Click Yes to start and No to Cancel. PC-DMIS will run your part program automatically.

PC-DMIS Gear will open the Execute dialog box. Follow the instructions in the Execute dialog box to proceed. See the "The Execute Dialog Box" topic described under "Parameters for Cylinder Gears".

Saves any changes that have been made in the Gear Measurement Setup dialog box.

Closes the Gear Measurement Setup dialog box without saving your changes.