Steps 1-6

Step 1

Install both Nut Strips with the desired amount of 1/4”-20 bolts. It is recommended to use the holes at both ends of the Tube Fixture and then a few in the middle. Not all holes are required to be used.

If being installed on a machine other than the OMIO Router, both Nut Strips may not align with the machines T Slot spacing. If this is the case then only use one Nut Strip.

Step 2

Slide the OMIO CNC Tube Fixture with Nut Strips into the desired T Slots in the machine bed. The recommended location for the Tube Fixture can be seen below as this will maximize the usable space on the table.

Once the OMIO CNC Tube Fixture is in the desired location. Snug up all the bolts that connect with the Nut Strips. The Tube Fixture will still need to be bumped around to align with the machine so DO NOT fully tighten.

Roughly align the OMIO CNC Tube Fixture with the machine by bumping it all the way to the left or right of the T Slots. This will help for the final alignment in the next steps.

Step 3

Set up the dial test indicator on the gantry of the machine. Begin at the front of the machine and set the indicator to zero on the inside face of the Tube Fixture, as shown below. Now jog to the back of the machine using only the Y axis. DO NOT move in the X axis. There will most likely be some deviation between the front and back of the machine. Bump the OMIO CNC Tube Fixture around using a dead blow hammer or something similar.

Repeat this process until both ends of the OMIO CNC Tube Fixture read the same value on the indicator.

The middle of the OMIO CNC Tube Fixture may not read the same value as the ends. This is fine and will be corrected in a following step.

Step 4

Tighten all bolts that pass through into the Nut Strips and reverify that both ends still read the same value on the OMIO CNC Tube Fixture.

If this is the case, proceed to the next step. If not, go back to Step 3 and repeat the process until the indicator reads the same value on both ends of the OMIO CNC Tube Fixture.

A .0005”-.0015” variance between both ends is an acceptable range as the next step will correct for any variance.

Step 5

This step is optional if the straightness of the machine and Tube Fixture are acceptable. If the max precision is desired then it is recommended to take this skim cut.

Remove the End Stop Block from the OMIO CNC Tube Fixture if it is still installed. Install a 6mm or similarly sized end mill into the spindle. The end mill should have at least .500” of flute length. Jog the end mill to the approximate location indicated below. This should be about .030” from the side wall and the bottom of the OMIO CNC Tube Fixture. Turn the spindle on to the desired RPM for the end mill being used. Jog the machine in the X direction towards the side wall of the OMIO CNC Tube Fixture until the end mill just begins to cut. It is recommended to put the machine into incremental mode and step over at .001”. Once the end mill touches, jog the machine in the Z direction until the end mill just touches the fixture. Put the machine back into continuous mode and jog the machine in the Y direction at the desired speed for the full length of travel of the machine.

This will perfectly align the OMIO CNC Tube Fixture with the OMIO axis’. If it appears that there was no material removed in certain areas of the OMIO CNC Tube Fixture, this step may be repeated.

DO NOT remove more than .01” of material as this will affect the clamps. Any more material removal may prevent the clamps from working effectively

Step 6

To verify that the OMIO CNC Tube Fixture is now properly aligned. Set up the indicator once again on the gantry of the machine. All portions of the tube jig should now read the same value across the travel of the machine.