[PRINT_FX]

hello all,

I'm trying to use a milling machine to insert Self-in tapping threaded inserts--- The tapping cycle doesn't work because during the return it bring the insert out of the hole.
using the G86, boring cycle with spindle stop doesn't work either because the feed stops before the last rpm is activated and the drive tool damage the Self-tapping insert.

how can I do this guys? I need to insert hundreds the Self-tapping insert 14MM deep. Any ideas?

what I need is, the spindle to move forward [Z-14] with RPM/FEED and stop before return. the spindle needs to be synchronized but it only works with the tapping cycle.


thanks in advance !

[deadlykitten]

hello print, did you considered using a clutch ?

feed stops before the last rpm is activated and the drive tool damage the Self-tapping insert

maybe this would work with droop control and slow rpm. but i am not sure / kindly

[PRINT_FX]

Hi,
What do you mean with a clutch? Can you give me an example? I’m using a drive tool in a collet holder. —-it would work indeed with a different drive tool which the supplier doesn’t make.

It got to be a way of rotating the spindle shyncronized with the feed and spindle stop before return.

hello print, did you considered using a clutch ?

maybe this would work with droop control and slow rpm. but i am not sure / kindly

[deadlykitten]

The tapping cycle doesn't work because during the return it bring the insert out of the hole

play may be too tight between the tool and the tapping insert, and too lose between the tapping insert and the part

you need to reverse those plays : use a smaller tool, so to achieve more play between the tool and the tapping insert, and also use a smaller drill, so to achieve a smaller play between the part and the tapping insert

G86, boring cycle with spindle stop doesn't work either because the feed stops before the last rpm is activated and the drive tool damage the Self-tapping insert

to avoid damaging the self-tapping insert, then you need a clutch and/or tension/extension capability

i hope this is usefull / kindly

[PRINT_FX]

play may be too tight between the tool and the tapping insert, and too lose between the tapping insert and the part

you need to reverse those plays : use a smaller tool, so to achieve more play between the tool and the tapping insert, and also use a smaller drill, so to achieve a smaller play between the part and the tapping insert

Yes, that is exactly the problem---bad designing, no play. I'm making a drive myself for this application.





[/QUOTE]i hope this is usefull / kindly [/QUOTE]

Thanks, much appreciated!!!