ngcgui lathe sub for fins request

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07 Aug 2013 17:43 #37474 by cncbasher
anyone have a ngcgui sub for cutting fins or parting to depth etc and repeat x times .
i'm looking at cutting some finned heatsinks

dave

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07 Aug 2013 20:00 #37477 by andypugh

anyone have a ngcgui sub for cutting fins or parting to depth etc and repeat x times .
i'm looking at cutting some finned heatsinkse


Something that came up in conversation with cradek with regards to having to change working plane between curved moves and canned cycles was that the peck-drilling canned cycle ought to work for peck-parting in the YZ plane.

So, in theory (and I have not tried this) you should be able to cut fins with:

G19 ; YZ plane
G91 G98 G83 Z5 R0.1 X50 Q2 L10 ; 10 slots every 5mm to a depth of 50mm with a chip-break retract every 2mmm

I would want to cut air with this first to sort out the retract mode...

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07 Aug 2013 21:10 #37478 by cncbasher
thanks for that Andy , but being daft I forgot to add cutting fins on a lathe rather than milling vertical

so it's more a parting off routine , cut to depth and step fin distance and repeat x times down the bar

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08 Aug 2013 00:41 #37484 by andypugh
<confused>
That code was intended for use on a lathe.
Ignore the mention of Y. It moves between features in Z and cuts in X.

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08 Aug 2013 01:19 #37486 by cncbasher
thanks Andy

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