The big non-moving part. Also how indexers are mounted.

Rides on the main beams of the table, moves in x-direction

Rides on gantry, moves in y-direction, carries the z-axis.

Plunges tool in z-direction

The mounting of routers, spindles, plasma cutters, engravers, drill, pencils, etc.

Dus collection feet, skirts, height setting, hoses, cyclones, gates, blowers, filters, anti-static, anti-fire, electrical control, etc.