#### Update Rotary Axes (Angle)

The Update Rotary Axes (Angle) screen is used to define and display all features that generate a well defined angle in the rotary axis plane.

Use the following steps to access this screen:

1. Press the Set Work Offset soft key on the second page of the Main screen. The soft keys at the bottom will change to show the different types of features you can measure to set a work offset.

2. Press the Set Rotation Angle Axes With Line soft key to display the Update Rotary Axes (Angle) screen.

3. Follow the on-screen instructions then press the Confirm soft key to complete the procedure. Press the Return soft key to return to the previous screen without saving.

Definitions:

- Tip Offset X, Y and Z - The position of the probe tip relative to the gage line.

- Work Offset - Specifies the Work Offset to be updated selected by the user from the list.

- Rotary Table - Axis ID - The letter that identifies the axis - A, B or C depending on the number of rotary tables defined in the system.

- Measurement - Angle - Displays the Measured and Target values of the rotary table angles.

- Properties - Number of Points - Defines the number of points to be measured.

- Motion Parameters - Search Distance - Defines how far away from the theoretical position of each measurement the moves will search to locate a contact point on the part.

Available Navigation Bar Soft Keys on this Screen:

|  |  | Select a Work Offset to Update This soft key selects the named work offset from the list of offsets for updating. Pressing this again will select the next work offset from the list.
|  |  | Confirm to Update Work Offset This will be available after the machine has learned the feature location. It will save the command to the program.

Learn Process:

The concept is to measure a line that is in the “Rotary Table Plane”, so that the rotary axis component of the work offset can be set based on that line. The measurement of that line determines an angle in the plane and the Rotary Axis Angle will match the Target Angle when the updated work offset is active.

There are two different scenarios for measuring the line.

The first case is when the normal axis of the rotary table plane is parallel (or anti parallel) to the spindle axis. In this case, the steps are identical to the steps that are used to Learning a Line procedure in NCGage.

As shown below, a direction that lies in the plane that is defined by the spinning of the table that is displayed on top is being measured. The user is provided with on-screen prompts to learn the positions of points 1, 2 and 3. Once NC Gage is taught these point positions it will have the necessary information to measure the line automatically.

In the image above, the direction of the line that is shown in red describes the measurement path. This is accomplished by positioning the probe at the three positions shown.

The second case is when the Normal Axis of the rotary table plane is perpendicular to the Spindle Axis. In this case there is one less step to learning the line. This is because in the first case, we are not sure if the part is on the “left” or “right” side of the defined line using the first two points, so the user is instructed to learn a third point by moving “away” from the surface. This second case is different, because the direction that the probe and the direction of the rotary table plane leaves only one possibility, so we do not prompt the user to learn a 3rd point.

Here, the user is trying to measure a direction that lies in the plane defined by spinning the table on the side (which looks like a dowel in the picture shown above).

The user is provided with on-screen prompts to learn the positions of points 1 and 2. Once NC Gage is taught these point positions, it will have the necessary information to measure the line automatically.

In the above example, the direction of the line that is shown in red describes the measurement path. This is accomplished by positioning the probe at the two positions shown.