[Sbrown3433]

How do I slow down the feeds and speeds in a canned cycle g81 at the end of a drill cycle so the blank doesn’t shoot out and break the glass again

[Sweet-Swiss]

Hi Sbrown,
My answer is you can't slow down the feeds and speeds with canned cycle G81 because it is a fixed cycle. If you want to control feeds and speeds for drilling, you can build your own custom drilling cycle with macros for example using G65 for Fanuc control.

[Superman]

U'drills will form the slug that shoots out. Same reason you don't U'driil stacked plates. Find an alternative...

U'drilling from both ends... is the suggested solution.

Or have a setup that contains that slug.

Or a different tool (pointed) that doesn't create a slug.

[Williami]

To slow down the feeds and speeds in a G81 canned cycle at the end of a drill cycle, you can use the G-code commands to adjust the feed rate (F) before the retract motion. Consider adding a lower feed rate just before the retract command to ensure a smoother exit from the hole, which will help prevent the blank from shooting out. Additionally, you might want to increase the retract height to give more clearance.
Drive Mad