### Profile Tab

Use the Profile tab to specify the parameters for the measurement and evaluation of the profile. Profile measurement is optional; if you do not want to measure the profile, clear the Measure option.

Define Gear dialog box – Profile tab for cylinder gear

Measure: Select this check box to measure the profile of the gear.

Click this button to set the values for Start Diameter (near root) and End Diameter (near tip) in the Measurement area, as well as parameters in the Evaluation area, based on the gear parameters. It will also set the Z Coordinate value based on the gear parameters.

Measurement Area

Teeth List to be measured: The box to the right of the list specifies the tooth numbers for which the profile will be measured based on the Number of teeth value on the Parameters tab. The list defines for how many teeth the profile will be measured. By default, the profile will be measured on four teeth. The following options are available in the list:

- All: Measures all of the teeth. When you select this option, the teeth range automatically appears in the box, and you cannot change the value.

- Custom: Measures only the teeth that you type in the box. Separate the teeth with commas. For example: 1,8,14,20. An out-of-range error symbol will flash to the right of the box if the value that you enter in the box is out of range based on the Number of teeth value on the Parameters tab.

- 1, 2, 4, and 8: Enables PC-DMIS Gear to automatically calculate the teeth to measure. The teeth automatically appear in the box, and you cannot change the value.

Profile on left or right flank: Use this list to specify the flank to measure. Available options are Left, Right, and Both. To determine the left and right flank of a tooth:

- For an external gear, imagine you are standing on the center of the gear and looking forward at the gear's tooth. The left flank is on the left side of the tooth, and the right flank is on the right side of the tooth.

- For an internal gear, imagine you are standing in the center of the hole and are looking at a space between two teeth. The left flank is on the left side of that space and the right flank is on the right side.

Start Diameter (near root), Start Roll Length (near root), or Start Roll Angle (near root): This value is the diameter, roll length, or roll angle of the circle, which represents where the profile scan should start.

End Diameter (near tip), End Roll Length (near tip), or End Roll Angle (near tip): This value is the diameter, roll length, or roll angle of the circle, which represents where the profile scan should end.

The Start Diameter and End Diameter values can be defined as Diameter, Roll Length, or Roll Angle. You can select the option for the Type of input for definition of involute position/region parameter in "Step 3: Modify PC-DMIS Gear Settings". The name of this option depends on the selection in step 3.

Z Coordinate: This is the Z-coordinate value where the profile should be measured. This value is usually negative, but positive values are allowed.

Evaluation Area

Start Diameter (near root), Start Roll Length (near root), or Start Roll Angle (near root): This diameter, roll length, or roll angle value determines where on the profile scan you want to begin the evaluation. You should use a value slightly larger than the profile start diameter value.

End Diameter (near tip), End Roll Length (near tip), or End Roll Angle (near tip): This diameter, roll length, or roll angle value determines where on the profile scan you want to end the evaluation. You should use a value slightly smaller than the profile end diameter value.

Magnification of Deviations (%): This value is a percentage that all errors will be magnified by for display in the evaluation.

Magnification of Range (%) (Def. autom): This value is a percentage that all errors will be magnified by for display in the evaluation. If you type a zero, PC-DMIS Gear calculates the value internally.

Tolerance of Profile Angle Deviation (fHα): Provides the allowable deviation between two design profiles which intersect the mean profile at the end points of the evaluation range. See the appropriate gear standard for a definition of this value.

Tolerance of Total Profile Deviation (Fα): Provides the allowable deviation between two design profiles which enclose the actual profile over the evaluation range. See the appropriate gear standard for a definition of this value.

Tolerance of Profile Form Deviation (ffα): Provides the allowable deviation between two profiles parallel to the mean profile which enclose the actual profile over the evaluation range. See the appropriate gear standard for a definition of this value.

Tolerance of Profile Error (Vφ): See the appropriate standard for a definition of this value. This value is for the AGMA gear standard only.

Evaluate Crowning: When this option is checked, the crowning will be evaluated.

Minimum Crowning: See the appropriate gear standard for a definition of this value.

Maximum Crowning: See the appropriate gear standard for a definition of this value.

When you select this button, PC-DMIS Gear calculates the tolerances for profile evaluations based on the Standard and Grade specified on the Parameters tab.

Report Setting

Draw K-Chart: This check box specifies whether the Tolerance K-Chart appears in the report. For a definition of the K-Chart, consult the gear standard.

Draw Grid Line: This check box specifies whether grid lines appear in the report. Grid lines act as a ruler of sorts, indicating in the report how large the deviation is.

Define K-Chart: Use this button to define the parameters of the K-Chart for the profile and helix/lead. See the "Define K-Chart for Profile" topic.