### Define K-Chart for Helix/Lead

The Define K-Chart for Helix/Lead dialog box appears when you click the Define K-Chart button on the Helix/Lead Tab. You can use this dialog box to define the type of K-Chart (standard or custom) and to modify tooth tip tolerance values.

Note: For a definition of the K-Chart and more complete information, refer to the appropriate gear standard.

Define K-Chart for Helix/Lead dialog box

K-Chart Type: Select the type of K-Chart from the list. Available types are:

- Standard K-Chart

- Custom K-Chart: When you select this type, a list of custom types appears. Select the appropriate type: Custom Type 1, Custom Type 2, Custom Type 3, or Custom Type 4.

Definition Area

This area contains items to help you work with a K-Chart. You need to enter the necessary parameters for the type of K-Chart you selected. The tolerance is in the X axis and the radial size is in the Y axis.

W(number): This is the radial position to define the tolerance.

SAW: This is the Z coordinate location where the Helix/Lead scan begins. It displays the value entered for the Start Z (near lower face) parameter on the Helix/Lead tab.

T(number): This is the tolerance value in the position of some "Diameter".

Preview Area

This area displays a diagram of the K-Chart that you selected in the K-Chart Type list; the diagram changes when you select a different K-Chart. You can use this area to preview a representation of the style of chart that PC-DMIS Gear will use when you generate the report.