Originally posted by wms
Hu,
That's right my machines will turn up to 100,000 rpm and balance is no problem.
But seriously, I don't pay too much attention to what the cam system suggests for spindle speed and feeds.
I found I always want to "tweek" them anyway.
So when I'm going thru the tool path wizard I adjust the speed and feed to my liking. |
Yes, I can do that and we would all have to tweak. But, I am sure the intention of the programmers is to have a starting speed and feed that is theoretically correct. I've got one mill that runs at 2500 max and another running at 6000 max, so I think the effort to cap the speed at those figures and then adjust the feed according to the speed cap would be worth making, if the feature is incorporated within software at all. It is this exact lack of precision that has forced you and I to become the tweakers that we are
I know in a perfect world it would be nice to have the system output the perfect speed and feed.
And if you get all the variables set up in the material sheet and tool sheet, it will output code based on those variables. But things like max spindle speed and the condition of the work piece and the way a person machines will "muddy" the water.
As for the spindle code needing to be a percent of max spindle speed. That's a new one to me. All my machines want an actual speed with no decimal point.
So I'm not any help here.
I guess I'm so used to "tweeking" my programs after post,(especially at tool changes) that I don't know any better.
We still have the problem of the "First" move to part at tool change where it always goes to xyz instead of xy at clearance then to z. (The safe way)
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You have this Z problem? Hmmm, I know what you are referring to, but I don't see it. In your NC setup "Tool format" do you have a
G00 Z{CR}
inserted after, let's say, when your spindle turns on?
Here is a sample of the way my program would begin, including the first few lines of the toolpath.
G40
G75
G80
G90
X-4. Y0. Z1. G92
T2 (.375 INCH 3/8 CARBIDE BALL MILL)
F18.4569
S9228 M3
T200
/Z1. = (G00 Z{CR} in your NC setup Tool Format, /= G00 in Shadow)
/X0.6064 /Y-0.0952 /Z1.
/X0.6064 /Y-0.0952 /Z0.05
F9.2284
X0.6064 Y-0.0952 Z-0.1
X0.6202 Y-0.0489 I0.3627 J0.0023