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Author Topic: Possible bug in Lazycam?  (Read 5874 times)

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Offline CDyckes

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Re: Possible bug in Lazycam?
« Reply #10 on: April 30, 2007, 04:53:05 AM »
Brian,

Just tried it with version 2.00.067. Better, but the error has moved to the final line of the outer cut and has an error of +0.60mm :(  I don't use any cutter compensation at all.



On a Lazycam related issue. The file I sent you does a rapid plunge to -1.5 (start depth) followed by a feed to -3 before each cut.  I tried this setting as if I set a start depth of 0 then Lazycam generated a pass a 0 height before doing it's first feed to -1.5.  I've tried various settings and the rapid/plunge settings seems a little strange, especially for arcs.  Is this use error, or something that needs optimising? I have RTFM but it's not clear what's needed here.

EDIT:  Test project zip file added to show rapid/feed z moves

Thx

« Last Edit: April 30, 2007, 05:23:02 AM by CDyckes »
Colin
Re: Possible bug in Lazycam?
« Reply #11 on: April 30, 2007, 08:59:51 AM »
I have just ran your file here and it is fine...

ccould you please run this file and tell me what it is doing?
G0 z1.0
X5.0
G01 X10 F50
Y5
X0
Y0
X5
M47

Run that file for about 10 reps and tell me if it is out of position?  I think that you are going to find that the Y axis is moving its position (Electrical noise) OR that you have backlash in your screws...
To see what is going on please put a pen in the spindle and draw the path.

Thanks
Brian
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Offline CDyckes

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Re: Possible bug in Lazycam?
« Reply #12 on: April 30, 2007, 09:11:45 AM »
Brian,

I'll try and rig up a pen and try that after work.

For what it's worth, all the holes measure correctly from the lower edge to within .02mm (which is amazingly accurate). RH portion of the top cut is now straight.

Wouldn't the top righthand cut slope upwards if backlash was the problem (it did slope down before the Mach3 fix whilst the left portion of the top cut was straight and parallel to the bottom cut).
Colin

Offline CDyckes

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Re: Possible bug in Lazycam?
« Reply #13 on: April 30, 2007, 03:56:09 PM »
Ran the test loop some 50 times in total, manually cranking the z-axis down every 10th pass to allow for pencil wear. Got this:-



Picture was slightly out of square and I haven't photo adjusted, but actual result looks a good rectangle to me.

Colin
Re: Possible bug in Lazycam?
« Reply #14 on: April 30, 2007, 09:51:55 PM »
Well that look nice :)  hmmm I don't see where your error is
Fixing problems one post at a time ;)

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