### Parameters Tab

This tab allows you to define the geometry for the gear that is to be measured. Most of these values can be found in the drawing for the gear. If some of parameters are not provided from the drawing or if their value does not yet correspond to the drawing, the corresponding value can be estimated in order to make the measurement possible.

Gear Definition dialog box – Parameters tab for bevel gears

Edit the following values to define the gear geometry:

Number of Teeth: Provide the number of teeth for your gear.

Normal module or Diametrical pitch: Please consult the appropriate gear standard for the definition of this parameter. The heading for this box changes between “Diametrical Pitch” (for Inch) and “Normal Module” (for MM) depending on whether you selected Inch or MM as your unit of measurement. Normal Module or diametrical pitch should be defined as part of the gear specification.

Mean spiral angle: Determines the mean angle of the teeth.

Tooth Width: Defines the width of the tooth.

Gear Type: Select either "Gear" or "Pinion" as depicted below.

A - Gear
B - Pinion

Orientation: Select External for gears where the teeth are on the outside of the gear, or Internal for gears where the teeth are on the inside of the gear.

Units: Select from either INCH or MM to define the units for your gear.

Convex on right side: When this option is selected the right side of the gear teeth as viewed from the center of the gear is convex. If the convex side is on the left (see the large gear in the image below) then this option should not be selected.

Master Flank Area

Master Flank File: Browse to and select a previously created Master Flank file (*.dat). Master Flank data for the Flank, Row, Column, and XYZIJK data is displayed in the table below. If you do not select a file here you will need to define it using the Measure | Master Flank menu option. See "Step 7: Measure the Master Flank" for more information on creating Master Flank files.

Pitch Cone Area

Half pitch cone angle: Defines the half cone angle for the pitch cone.

Z-coordinate for pitch cone apex: The z-coordinate of the pitch cone apex is used to define the location of the pitch cone.

Face Cone Area

Half face cone angle: Defines the half cone angle for the face cone.

Z-coordinate of face cone apex: The z-coordinate of the face cone apex is used to define the location of the pitch cone.

Root Cone Area

Half root cone angle: Defines the half cone angle for the root cone.

Z-coordinate of root cone apex: The z-coordinate of the root cone apex is used to define the location of the pitch cone.

Quality Standard and Grade Area

The options in this area define the standard used to create the gear and against which you will measure the gear. Choose from the AGMA2009, AGMA309.03a,or DIN3955 standard and specify the Grade for the selected standard. PC-DMIS Gear automatically determines the tolerances Fp, fp, fu and Fr from the given gear quality number and quality type and inserts these tolerances into the corresponding values. If you don't specify the gear quality the tolerances will not be determined.