During machining center acceptance, how do you measure actual tool-to-tool (T-T) change time and verify it against the contract spec?
• Use a stopwatch or CNC timer from spindle unclamp to next tool clamped; average 10 consecutive cycles.
• T-T counts adjacent pockets only, excluding tool selection wait; contracts often specify T-T ≤1.5s or 2.5s.
• Test with spindle stopped at rated speed and ATC fully loaded to avoid empty-carousel false results.
• If deviation exceeds 10%, require inverter acceleration or ATC positioning parameter adjustment.
• Record each tool weight; heavy tools may extend change time and need separate confirmation.
• T-T counts adjacent pockets only, excluding tool selection wait; contracts often specify T-T ≤1.5s or 2.5s.
• Test with spindle stopped at rated speed and ATC fully loaded to avoid empty-carousel false results.
• If deviation exceeds 10%, require inverter acceleration or ATC positioning parameter adjustment.
• Record each tool weight; heavy tools may extend change time and need separate confirmation.