Bugs item #1922330, was opened at 2008-03-21 11:19
Message generated for change (Comment added) made by cradek
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Category: Motion Controller
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Chris Radek (cradek)
Assigned to: John Kasunich (jmkasunich)
Summary: arcs with large radius result in wrong motion
Initial Comment:
This valid arc should generate nearly a straight line move. This program
previews correctly in AXIS. When run, the tool heads in the correct direction
but goes too far. In AXIS the DTG shows about 16542232161 inches. It should
be about 1.
g17 g20
g0 x0 y0
g3 y1 i-2632778018.2 j.5 f10
m2
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>Comment By: Chris Radek (cradek)
Date: 2011-03-17 11:35
Message:
I don't think the bug is where the previous comment says. I suspect the TP
is trying to make a full circle because the radius is large compared to the
distance between endpoints. Notice the DTG is 2pi * (I word)
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Comment By: Michael (micges)
Date: 2009-06-07 04:13
Message:
I've done some tracking for this bug:
in tp.c : tpAddCircle() there is surely wrong calculate
helix_length = pmSqrt(pmSq(circle.angle * circle.radius)
+pmSq(helix_z_component));
in my tests there is calculated 11 digit number and should be 1.
should be added some radius/angle checking.
----------------------------------------------------------------------
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