#### Update Two Axes (Bore)

The Update Two Axes soft key can be used to measure a circle bore (internal circle feature) on the part and then use its center coordinates to update a specified work offset.

1. Press the Set Work Offsets 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 Update Two Axes (Bore) soft key to display the Update Two Axes (Bore) screen.

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

Parameters Definition:

- Work Offset - Specifies the Work offset which is chosen to be updated.

- Measured - Specifies the location of the Work Offset. The value is learned from a circle (bore) learn process.

- Offset - The work offset will be offset this distance away from the measured feature.

- Search Distance - Specifies the location that the probe will start searching for the surface. This is the distance away from the surface nominal that the probe will move at the "finding" speed that was established in the setup screen.

Available Navigation Bar Soft Keys on this Screen:

|  |  | Set Work Offsets This soft key displays a new screen with new soft keys for updating work offsets in various situations.
| Select a Work Offset to Update This soft key scrolls through the work offset listing one by one with each press of the soft key. |  |
|  |  | 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.

Follow the on-screen instructions to measure a circle, select the work offset to update, and then press the Confirm soft key to update the work offset. Press the Return soft key to return to the previous screen without saving.

Update Process:

1. Position the probe in the center of the bore.

2. Press the Read Position soft key . The tip position is read as the bore center and distance away from the surface. Press the Back to Last Step soft key to cancel this position and read a new position.

3. Press the Execute soft key and NC Gage will drive the probe and search the Circle (Bore) by taking four automatic hits. From these it will determine the center of the circle.

Image indicating the starting manual position to jog the probe to (A) and the automatic probing pathways (red lines) taken by NC Gage as it measures four points (positions 1-4)

4. Once probing has completed, the measured values are updated with the circle's center. Select the Work Offset name from the list by pressing the Select a Work Offset to Update soft key until the desired work offset is highlighted. Parameters for each highlighted work offset will be updated on the screen as each one is selected.

5. Press the Confirm soft key to update with the selected work offset. The axes that are not parallel with the work face normal work offset values will be updated. Press the Return soft key to return to the previous screen without saving.

The following is the specific feature path and logic built into NC Gage:

- Read position of probe in center of bore.

- Bore measurements will occur at Z value of read point.

- Estimate XY center of bore to be read position point.

- Measure point in +X direction using search distance.

- Return to center position.

- Measure point in –X direction using search distance.

- Return to center position.

- Measure point in +Y direction using search distance.

- Return to center position.

- Measure point in –Y direction using search distance.

- Return to center position.