Coordinate Rotation (G68)

Definition

Applies rotational transformation to the coordinate system. Rotation is useful when part orientation changes but the machining strategy stays the same.

Formula / Rule

• G68 rotates the active coordinate system around the programmed center by the specified angle.
• Always pair it with the controller cancel or reset command before leaving the rotated section.

Typical Range

• Use it for tombstones, angled fixtures, or repeated faces that share one program pattern.

Shop-floor Scenarios

• Apply it when the fixture angle is known and the same feature repeats on another face.
• Cancel rotation before probing, manual recovery, or handing the job to another operator.

Common Errors / Troubleshooting

• If coordinates look mirrored or shifted, confirm rotation center, sign, and active plane.
• If downstream moves stay rotated, verify that the cancel block executed before restart.

Related Tools

• G/M Code Reference
• Controller Comparison