Axis Designation

Axis Designation:

The axis designation for a rotary table is determined by the type of machine and the mounting location of the rotary table on the machine. On a VMC machine, a 4^th axis can be designated as the A (rotates about the X-axis – most common designation), or as the B (rotates about the Y-axis – typically a tilt 5th axis), or the C (rotates about the Z-axis - if a table is mounted in the horizontal position on it back). On an HMC machine, the 5^th / 6^th axis table can be designated as the C (rotates about the Z-axis – most common designation) or designated as the A axis (rotates about the X-axis). The axis name can be changed by the customer provided the axis name has not already been used. Most 4^th axis rotary tables are mounted to the right side of the VMC machine rotating about the X-axis (designated as the A). Most 4^th and 5^th axis tilt tables are mounted to the right side of the VMC machine with the rotary axis rotating around the X-axis (A or C) and the tilt axis rotating about the Y-axis (B). Most 5^th / 6^th axis tables are mounted to the B-axis on a HMC rotating about the Z-axis (C).

Axis Designation for a VMC and HMC

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