Feed Hold (Spindle On)

In practical manufacturing terms, Feed Hold (Spindle On) describes: State that pauses feed while spindle rotation is maintained. It balances material removal rate, tool life, and finished surface condition. Managed well, it improves process repeatability and lowers correction workload. Treat this as part of program-state control, not just line-by-line syntax.

Engineering Significance

The practical way to control this is a closed loop: machine data, setup verification, and inspection results. Using all three prevents recurring corrections.

Control Actions

• Record changes with tooling condition and material lot context.
• Increase aggressiveness only after chip evacuation and vibration are stable.
• Tune feed, speed, and engagement together, not one parameter at a time.

Failure Modes

Reactive tuning without trend data usually increases variability. Overdriven settings often appear as chatter, edge chipping, or thermal size drift.

Before-Run Checks

• Inspect chip form and color during first-off validation.
• Check tool wear progression at planned intervals.
• Confirm first-article data before scaling throughput.