how-slow drilling cycle when breaking thru

[GeoGirl]

Hey Jack,

 

Do you see problems with drilling, say... when your using an "integral" drill chuck? Apparently has 3 times the holding force.

 

Any thoughts please :-)

 

GeoGirl

[chris m]

While an integral drill chuck won't come apart during a toolchange [like the taper-fit holders do], they still suck

 

3 times the holding force of what? The most positive drill retention setup, I would guess, would be a Whistle Notch holder but after that I would run an ER collet chuck all day over a drill chuck. If you are running a high thrust load use a stop screw in the collet chuck to back up your tool.

 

Drill chucks are for Bridgeports and maybe edge finders....

[Storkman]

quote:

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Drill chucks are for Bridgeports and maybe edge finders...

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Cmon Chris, I saw an episode of Jesse James where he had an endmill in a Jacob's drill chuck on a VMC.

[chris m]

I saw an episode of American Chopper where they were milling a piece of Aluminum in one of their Haas' with about a 3/4" endmill that was probably 4" long and they had that in a drill chuck...nothing like advertising you have no clue what you're doing

[babolino]

bump!

 

It´s possible to use highfeed on a drill job?

 

How can I change highfeed parameters FAST like in V9? I know how to change ´em in the Mach Def.

[babolino]

Am I askin´the wrong questions?

[Jack Neelands™]

hi geo ...chris is right ...although integral drill chucks are great for .250 dia and smaller holes...anything larger and you are actually taking the chance of pushing the drill up because naturally you up the feed and pecks for larger drills ...if this is a one or two off or even a few more than that then go for it but for any type of real production ...you need to collet your drills ...good luck

[chris m]

Babolino I don't think anyone knows the answer to your question. Your reseller should be able to say yes or no

[P_Scott]

babolino,

 

I don't believe High Feed works on Canned drill cycles. It's all about how the tool removes material. Drills are plunging tools, not actually feeding (linear) through material. The best solution would be to follow Chris's advice and contact your reseller to ask for a custom drill cycle modification for your post. HTH

[Guest]

The Fanuc manual that I have clearly states that the highfeed option is not used on canned cycles.

 

:shrug:

 

A custom cycle to do this should not be that difficult. If you search for existing custom cycles on the forum you should be able to get a feel for what needs doing.

[Rotary Ninja]

A slower feed to break though? Doing the opposite would work better. If you are burning the corners off the drill, try slowing the rpm down, and raising the feed. Most people run rpm's way too high, and feeds way too slow on drills and reamers. This may not be the case, but I see it a lot.

 

What material are you drilling? What kind of drill? And what feeds and speeds are you trying?

[desmotom]

I would just use two endpoints in my geometry feed to one and then slow the feed down the other to break through with the toolpath editor