### CMM: Gear Measurement Setup

Gear Measurement Setup dialog box

Part Program Area

Part Program: The Create a new part program and Open an existing part program options allow you specify whether PC-DMIS Gear should create a new PC-DMIS program to measure the gear or if it should use an existing PC-DMIS part program. Specify the name of part program by typing the path and name for part program or clicking to select the part program file. The path to this probe file will appear in the Part program name box.

Alignment Area

Alignment 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: This option determines whether or not PC-DMIS Gear should use multiple tips to measure your gear. If you have an indexing probe and you want to use more than one probe tip you should select this option.

Use alternate probe file for Profile and Lead: This check box lets you determine whether or not PC-DMIS Gear should use a different probe configuration for the Profile and Lead measurement than the probe configuration used for the Pitch
measurements. If you select this check box the associated box and Browse button become enabled allowing you to select the appropriate probe file.

“A” Angle: If you selected Use Multiple Tips and your probe uses an indexing probe head, this value defines the “A” angle that will be used for the measurements. The “A” angle of the probe remains constant while the “B” angle rotates to the best tip angle for each tooth. If you use a star probe and you don’t want any probe head rotation, type zero into this box.

Analog Probe: This check box tells the gear program whether or not you will use an analog probe head for the measurement. The type of scan used while measuring the Profile
and Helix
/Lead will be determined by this value. With an analog probe you can also select the Scan Type (see the Execution Controls area).

Probe has wrist: This check box lets you specify whether or not the probe configuration you are using contains a wrist. In PC-DMIS a probe configuration with a wrist uses the tip naming format “T1AXBY” where X & Y are the angles of the wrist (i.e. T1A90B180). Without a wrist PC-DMIS uses “TIPX” where X is simply the TIP #. PC-DMIS Gear needs to know whether or not the probe has a wrist so that it uses the correct tip naming format.

Generate: PC-DMIS will generate your part program, but will not measure unless the Measure check box is marked.

Measure: When this option is selected, PC-DMIS Gear will generate and execute the part program to measure the gear. Otherwise, the part program will be created, but not executed.

Evaluate: 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.

Execution Controls Area

Touch Speed: This value determines the speed the machine will move when it reaches the Prehit Distance for the current measurement point.

Move Speed: This value determines the speed the machine will move when moving around the gear.

Fly On: Causes the probe motion to move in smooth circular moves. 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.

Prehit Distance: This value determines the distance from the theoretical point that the machine changes from Move Speed to the slower Touch Speed. For further information on any of these values consult the main PC-DMIS help file.

Retract Distance: This value determines the distance away from the measured point location that the machine changes from Touch Speed to the quicker Move Speed.

Clearance Distance: This value determines the distance the probe will retract in the XY direction.

Clearance Height: This value determines the distance the probe will retract in the Z direction.

Scan Type: This option is used for analog probes (such as an SP600 probe). For an analog probe, you can scan profile and helix/lead in either Touch Trigger mode or Analog Scan mode.

Click this button to define the scan settings using the Scan Setting dialog box. See "Defining Scan Settings".

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

Information Are you ready to start measurement?

Click Yes to have PC-DMIS run your part program automatically or click No to Cancel.

Once the measurement process starts, PC-DMIS Gear will open the Execute dialog box. Follow the instructions in the Execute dialog box to proceed. See "The Execute Dialog Box" topic.

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.