Author Topic: LazyTurn  (Read 990411 times)

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Online Overloaded

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Re: LazyTurn
« Reply #620 on: December 30, 2008, 10:22:48 AM »
HI ART, & All,
Here is a booger.

Where the illustrated arc terminates to a line perpendicular to the centerline, the toolpath will crash the trailing edge of the chosen tool. And the holder leaves the the insert behind.

By simply adding a short "X" (Z) line parallel to the centerline BEFORE the perpendicular line, all is good.

RC

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Re: LazyTurn
« Reply #621 on: December 30, 2008, 10:34:47 AM »
Also, may be worth noting that the perpendicular line is NOT tangent to the arc.
RC

Offline ART

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Re: LazyTurn
« Reply #622 on: December 30, 2008, 11:26:54 AM »
Hi:

  This one is the result of an unwritten rule ( till now. LOL )

Rule: Any rough profile must be possibel with the first pass being a full length cut. Stock must be set large enough in
dimater to allow this. To see what I mean, use the Diags checkbox in the rough generator to see the diagnostic lines,
note how the first pass is broken. Increase the diamter enough that the first pass is a solid line.

 This has to do with soem complexities in the reentrant iterative algorithm I wrote for the path calulations. I may revisit at
some point, but at the moment, to ensure the "tree" is correct, the first node ( line) must be a complete line.

 ( For the mathmatically inclined that probably explains a bit about how Im doing this.. )   :)

Art

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Re: LazyTurn
« Reply #623 on: December 30, 2008, 12:07:32 PM »
Thanks ART, but....I don't get it. (mathematically challenged)
The stock IS .75" bigger than the part.
There are 5 uninterrupted passes to begin with.
Diags. shown NO breaks in the first 5 passes.
Sorry if I'm missing something THAT obvious.
RC

EDIT: Posted code shows 5 clear passes...but without that short horizontal line, the trailing edge of the tool crashes in the deep groove.
« Last Edit: December 30, 2008, 12:12:17 PM by Overloaded »

Offline ART

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Re: LazyTurn
« Reply #624 on: December 30, 2008, 12:23:11 PM »
Rich:

  Sorry, that wasnt the bug I was talking about. When I loaded it, my depth per pass was larger, and then the issue I was talking about happens, the left side goes away entirely.
Im still looking into your issue..

Art

Offline ART

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Re: LazyTurn
« Reply #625 on: December 30, 2008, 12:27:33 PM »
Rich:

  Sorry, what size tool is that, I cannot repeat it.. and depth/pass and clearance?

Thx
Art

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Re: LazyTurn
« Reply #626 on: December 30, 2008, 12:33:36 PM »
 :)
RC

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Re: LazyTurn
« Reply #627 on: December 30, 2008, 01:02:55 PM »
ART,
  I noticed that the width/depth relationship of the deep groove has an effect on the path. So I made it PLENTY wide in these 2 DXF's. They are identical except for the small FLAT.

In the following pic., it looks like the diamond tool path is good UNTIL it reaches a depth = to half the length of the diamond, then the depth is fed straight in. This would crash the trailing edge.
It looks proportional to the insert profile. ? ?
RC
« Last Edit: December 30, 2008, 01:04:32 PM by Overloaded »

Offline ART

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Re: LazyTurn
« Reply #628 on: December 30, 2008, 02:02:18 PM »
RC:

  in 12.47.gif, thats what Id expect to see. The profile follows the tool inward, so there shoudlnt be any trailing edge hit in that case. The photo looks good to me?

Art

Offline ART

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Re: LazyTurn
« Reply #629 on: December 30, 2008, 02:03:50 PM »
RC:

 Ohh, I see what you mean.. thats on purpose though, its assumed the tool can cut on either edge of a tool.

Art