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

HA5C Lessons

Identifying the axis used on the 5 Axis Trunnion
Identifying the axis used on the 5 Axis Trunnion

- When using a trunnion on most vertical CNC machines you always have the normal X, Y, and Z axis.
- The trunnion adds two axises.
  - The “A” axis will enable the trunnion to tilt.
  - When programming the "A" axis you program it in degrees.
  - The “A” axis has a 120° of movement in both the positive and negative directions.
  - You need to use decimal points when programming the "A" axis.
Example:  G01 X1.000 A30.0 (this will move the X and A axis at the same time)

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- The other axis is the “B” axis.
  - The “B” axis will enable the trunnion to rotate the part.
  - When programming the "B" axis you program it in degrees.
  - The “B” axis can rotate 360°.

Southwestern Illinois College, CC BY 3.0