countersink 304 stainless

[jprobst]

Originally Posted by joecnc1234 lol

hey thanks for the support man

[rbest27]

what type of tool are you using first of all. High speed or carbide? I've got c'sink's that I've had in my tool box for years. If it's a high speed c'sink try 50 surface feet calculated at the max diameter of the c'sink. My best results have always been just plunging it right in...no pecking. I wouldn't run too slow...you want a nice chip coming off the tool that way there you don't get a rat's nest. Carbide you can run a bit faster...chip load on either one I would estimate at about .005 per rev.

As for the boss freaking out, that's what they do. Sounds like your shop has limited experience with stainless so you'll have some growing pains. Countersinks don't cost that much that he should be freaking out.

[AMW]

Hmmmm how can i put this??????

ok,ok: program a circle= interpolate= go from one pole to the other pole=make a circle


I think

LOL me too

[jprobst]

well the customer came by yesterday and needed his parts this morning, so after hours i broke my last muliflute countersink, thought i was dead in the water, then i found a single flute hss 3/4" countersink i ran it at 250 rpm with a plunge rate of .5 and it ran very well, got the job done, billed customer double for the rush and didn't break anymore bits, so thank you all for your help, as fas as interpolate question, i'm fairly new at this vmc stuff so i'm gonna ask any question i can, no matter how stupid the question is, not only am i the only programmer in the shop, i run the shop to and don't have the time i need to sit down and learn about this stuff, so i learn as i go and ask what some might feel as a stupid question.

[PBMW]

Jprobst
To interpolate is to consider the hole as a profile and drive the tool around the ID to generate the angled countersink.

[jprobst]

thank you

[dertsap]

with using interpolation you should be able to accomplish a consistantly clean surface finish , i would cut it in two passes or
you could helix in so you can save from any air cutting and prevent any lead in and lead out marks