### Topography Tab

The Topography tab is used to define all values necessary for the description of topography measurement.

Topography measurement uses single point probing to take measurements. All probing points and the machine movement is generated automatically by PC-DMIS Gear.

Gear Definition dialog box – Topography tab for bevel gears

Measure: When this check box is selected, the topography for the gear will be measured during the measurement process based on the parameters defined on the Topography tab.

Measurement Area

Number of teeth to measure: This value is the number of teeth for which topography will be measured. The teeth measured will be as close to equally spaced around the gear as possible starting with tooth #1. The default value is 4.

Teeth to be measured: This automatically lists the teeth that will be measured based on the Number of teeth to measure and the total Number of Teeth specified on the Parameters tab. This value is required. For example a value of 1,3,6,8 will measure tooth #1, #3, #6, and #8. You may also manually edit this list.

Flank selection: Select whether the Concave Flanks, Convex Flanks or Both Flanks will be measured.

A - Convex
B - Concave

Evaluation Area

Plot Magnification: This value is used to define magnification scale for the created report in the plot server. If you specify ‘0’, the evaluation is carried out, but no plot output will be created; however, the evaluation parameters are stored in the measurement result.

Tolerances Area

Total deviation: Defines the total tolerance for all grid points.

Line at face: Defines the tolerance for the face line.

Line at root: Defines the tolerance for the root line.

Profile at toe: Defines the tolerance for the profile at the toe line.

Profile at heel: Defines the tolerance for the profile at the heel line.

The graphic below provides an example of the topography tolerances and shows how the tolerance values are reported in the footer.