Course: PMT 250 Multi-Axis CNC Programming (Section 060)

HA5C Lessons

Advantages of using a 5 Axis Trunnion (Continued)
Advantages of using a 5 Axis Trunnion (Continued)

Center of the rotation

- In the MDI screen type in the following code.

G54 G00 G90 A90.

- This should tilt the trunnion to 90 degrees.  (Platter facing operator)
- Find the high side by rotating the spindle.
- Set your indicator to the face of the trunnion and zero indicator.

- Press the position button.
- Page down to the Work Offset page.
- Highlight the Y axis.
- Press the origin button to zero the Y axis.

- Move the indicator up in the Z axis above the trunnion.
- Activate the MDI screen and type the following codes.

G54 G00 G90 A-90

- The trunnion should tilt so that the platter is facing the back of the machine.
- Lower the Z axis and take a reading on the indicator.
- Jog the Y axis to get a reading on the indicator
- Rotate spindle to feed the high spot.
- Check the position page and the total movement you made in the Y axis.

- Jog the Y axis half the amount from the Y axis position page
- Double check the indicator readings to ensure that it reads zero at positive 90 degrees and -90 degrees.
- Press the Offset button.
- Press the Work Offset button to set the Y axis.
- You have found the center of rotation.