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Messages - thespindoctor

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261
General Mach Discussion / strange errors
« on: September 21, 2011, 02:13:02 PM »
While working mach crashed and I had to reboot the computer.  After this mach loader did not recognize by .set file even though it is there in the Mach3 directory.  Also, when I open LazyCam on another computer, it recognizes and loads the current file in the editor but on the computer that crashed, LazyCam cannot find an active Mach3 nor a program to load.  This problem has been present ever since I started using it. 

Also, I am trying to change a Y value in a G57 offset but I can only read it from CBasic and not able using setOEMDRO(831) to modify it

Thanks

262
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 10:36:16 PM »

263
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 10:10:54 PM »
Ok, then I may be in business!  Tool comp saves a lot of trouble and for now
will allow the machine to work well.  I was not sure from the docs and until
now have always used BobCad for tool comp.  I have already made the g code
file directly and used it to sharpen and it shows up in Mach toolpath.

I talked to BobCad today and described the problem and was told that I would
have to enter the points individually by hand.  There is apparently no way to take
a data file of points like this and get them into their software.  It seems like a
relatively easy thing to do...

The next problem for me is to take this data file and analyze the shape to identify
the best curves that fit the shape.  Any ideas as to how to do that?  The blades
are supposed to be made of 3 curves - a larger 8 foot radius segment over most
of the blade and 2 smaller radius curves near the front of the blade.   I hope to
be able to describe the blade is this way and be able to correct to ideal shape...

264
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 09:49:08 PM »
TP,

If I use tool comp in Mach will it not just make a move away from the tool path right or left by the radius of the wheel rather
than actually changing the path shape?

Also, you mention importing the points into a cad/cam and that is exactly my problem.  I have not been able to get the text
file into a cad program to clean up the tool path.  The file is a text file such as below consisting of X and Y values separated
by a comma.  I have searched the net and can't find a csv to dxf converter(or other format accepted by BobCad). 

-.2,-.8890
-.3,-.8895
etc

Thanks!

265
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 09:03:07 PM »
I have x,y and z axes set up like a milling machine.  The grinding wheel is mounted
in a chuck as one would mount an endmill or face mill with the 3 inch grinding wheel
oriented horizontally.   The blade is mounted on its side and the wheel moves in
X along the length of the blade and the curvature or "rocker" of the blade is
followed by moves in Y.  Moves in Z align the wheel with the blade but do not
change as the blade is sharpened.  Imagine a traditional milling machine with a
3 inch grinding wheel mounted on a mandrel placed into the spindle with the wheel
horizontal.

266
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 05:13:04 PM »
Thanks guys, I am trying to grind an ice skate blade.  I have the edge digitized with x and y coordinates from
a linear encoder.  I can create a nice g code and follow the blade with the wheel but I need tool compensation.
The problem is easy to fix if I could enter the points manually to BobCad, my Cad/Cam software but I need to
do this many times and I hope one day to market this machine so I need a permanent and convenient method
for future users.  Perhaps I will need to do the calculations in CB like the old machinists from days of yore..

The program is probably in the range of 1600 lines so posting it would not be too cool.  However, I could
email.

Keith

267
General Mach Discussion / Re: importing coordinate list
« on: September 20, 2011, 03:43:02 PM »
Thanks!  I have a nice program running but I need to do tool compensation to allow for a 3 inch grinding wheel.  I have a G code file working well which is generated through CB but the tool path is not correct because the wheel is hitting the profile I am trying to shape.  If I could get the shape out to a cad/cam and add a compensated path the problem would be solved.  I had hoped lazy cam or if needed I could convert from CSV file format to dxf or dwg through a conversion program and then send it to BobCad but that seems like so many extra steps that should not be needed.

Keith

268
General Mach Discussion / importing coordinate list
« on: September 20, 2011, 08:49:14 AM »
How can I get a x y coordinate file into lazy cam or mach?  I need to switch
from a comma delimited text file to a plot so I can do some tool compensation
of the tool path.  I am using a linear encoder to digitize a surface so I have
a list of coordinates generated by Mach.  Any ideas?

Thanks

269
General Mach Discussion / Re: digitize led on OemLed code
« on: September 10, 2011, 11:28:03 PM »
Fixed by adding While IsMoving  Wend

270
General Mach Discussion / Re: digitize led on OemLed code
« on: September 10, 2011, 12:16:21 PM »
Continuing on -  The switch is wired to A home and defined in ports and pins as A home not probe but it does
not work either as A home or as probe.

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