Creating a Script
- Todd Zuercher
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15 Feb 2013 02:44 #30065
by Todd Zuercher
Creating a Script was created by Todd Zuercher
I am not a programer and know nothing about writing programs.
I could use some help trying to write a small script file that can modify existing g-code files for my purposes.
I would want it to find all of the Z axis commands and create an identical W command after them.
Unless someone has a better idea to achieve the same end.
What I would like is something that can take code like this:
G1 X7.286672 Y10.920909 Z-0.165422
G1 X7.290075 Y10.882176 Z-0.162863
G1 X7.289496 Y0.985702 Z-0.161858
G1 X7.286561 Y0.942836 Z-0.161923
G1 X7.280504 Y0.912766 Z-0.166510
G1 X7.256354 Y0.833603 Z-0.159223
G00 Z0.25
G00 X7.006710 Y0.939417 Z0.25
G00 Z0.0
G1 X7.006710 Y0.939417 Z-0.079312
G1 X6.995858 Y0.916412 Z-0.086247
G1 X6.980558 Y0.899274 Z-0.080125
G1 X6.937673 Y0.867952 Z-0.085329
G1 X6.918087 Y0.863142 Z-0.087211
G1 X6.889543 Y0.859730 Z-0.086135
and turn it into code like this:
G1 X7.286672 Y10.920909 Z-0.165422 W-0.165422
G1 X7.290075 Y10.882176 Z-0.162863 W-0.162863
G1 X7.289496 Y0.985702 Z-0.161858 W-0.161858
G1 X7.286561 Y0.942836 Z-0.161923 W-0.161923
G1 X7.280504 Y0.912766 Z-0.166510 W-0.166510
G1 X7.256354 Y0.833603 Z-0.159223 W-0.159223
G00 Z0.25 W0.25
G00 X7.006710 Y0.939417 Z0.25 W0.25
G00 Z0.0 W0.0
G1 X7.006710 Y0.939417 Z-0.079312 W-0.079312
G1 X6.995858 Y0.916412 Z-0.086247 W-0.086247
G1 X6.980558 Y0.899274 Z-0.080125 W-0.080125
G1 X6.937673 Y0.867952 Z-0.085329 W-0.085329
G1 X6.918087 Y0.863142 Z-0.087211 W-0.087211
G1 X6.889543 Y0.859730 Z-0.086135 W-0.086135
I could use some help trying to write a small script file that can modify existing g-code files for my purposes.
I would want it to find all of the Z axis commands and create an identical W command after them.
Unless someone has a better idea to achieve the same end.
What I would like is something that can take code like this:
G1 X7.286672 Y10.920909 Z-0.165422
G1 X7.290075 Y10.882176 Z-0.162863
G1 X7.289496 Y0.985702 Z-0.161858
G1 X7.286561 Y0.942836 Z-0.161923
G1 X7.280504 Y0.912766 Z-0.166510
G1 X7.256354 Y0.833603 Z-0.159223
G00 Z0.25
G00 X7.006710 Y0.939417 Z0.25
G00 Z0.0
G1 X7.006710 Y0.939417 Z-0.079312
G1 X6.995858 Y0.916412 Z-0.086247
G1 X6.980558 Y0.899274 Z-0.080125
G1 X6.937673 Y0.867952 Z-0.085329
G1 X6.918087 Y0.863142 Z-0.087211
G1 X6.889543 Y0.859730 Z-0.086135
and turn it into code like this:
G1 X7.286672 Y10.920909 Z-0.165422 W-0.165422
G1 X7.290075 Y10.882176 Z-0.162863 W-0.162863
G1 X7.289496 Y0.985702 Z-0.161858 W-0.161858
G1 X7.286561 Y0.942836 Z-0.161923 W-0.161923
G1 X7.280504 Y0.912766 Z-0.166510 W-0.166510
G1 X7.256354 Y0.833603 Z-0.159223 W-0.159223
G00 Z0.25 W0.25
G00 X7.006710 Y0.939417 Z0.25 W0.25
G00 Z0.0 W0.0
G1 X7.006710 Y0.939417 Z-0.079312 W-0.079312
G1 X6.995858 Y0.916412 Z-0.086247 W-0.086247
G1 X6.980558 Y0.899274 Z-0.080125 W-0.080125
G1 X6.937673 Y0.867952 Z-0.085329 W-0.085329
G1 X6.918087 Y0.863142 Z-0.087211 W-0.087211
G1 X6.889543 Y0.859730 Z-0.086135 W-0.086135
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15 Feb 2013 05:05 #30071
by alan_3301
Replied by alan_3301 on topic Creating a Script
I know this doesnt answer your question, but you could link the W axis to the same pins as the Z axis? Send 2 drivers the same signal. That way you wouldnt have to edit your gcode.
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15 Feb 2013 07:17 #30075
by BigJohnT
Replied by BigJohnT on topic Creating a Script
I might be able to cobble something up in python in the next few days... if I forget remind me.
Is the Z word always last in your code?
John
Is the Z word always last in your code?
John
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15 Feb 2013 20:45 - 15 Feb 2013 20:46 #30108
by Rick G
Replied by Rick G on topic Creating a Script
Another option would be to export your code to a spread sheet, copy the z coordinate column to a new column, add the w.
Extra steps, but should work.
Rick G
Extra steps, but should work.
Rick G
Last edit: 15 Feb 2013 20:46 by Rick G.
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15 Feb 2013 21:33 #30114
by andypugh
Depending on the reason this is required, Gantrykins might be appropriate.
I suspect that this is a twin-spindle machine.
I can imagine situations where Gantrykins would be a good way to do this. (though I don't think it allows you to switch configurations on-the-fly)
Replied by andypugh on topic Creating a Script
I know this doesnt answer your question, but you could link the W axis to the same pins as the Z axis? Send 2 drivers the same signal. That way you wouldnt have to edit your gcode.
Depending on the reason this is required, Gantrykins might be appropriate.
I suspect that this is a twin-spindle machine.
I can imagine situations where Gantrykins would be a good way to do this. (though I don't think it allows you to switch configurations on-the-fly)
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15 Feb 2013 21:47 #30116
by alan_3301
Replied by alan_3301 on topic Creating a Script
I bet you are right. I was imagining a single z axis with 2 motors.
Maybe a checkbox could be made that would link and unlink the 2 pins.
Unlinked for touching off, and linking back when ready to run code.
Maybe a checkbox could be made that would link and unlink the 2 pins.
Unlinked for touching off, and linking back when ready to run code.
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15 Feb 2013 21:49 #30117
by BigJohnT
Replied by BigJohnT on topic Creating a Script
I made some progress this morning but ran out of time to finish it up...
The raw output of the conversion.
The python code to get this far.
John
The raw output of the conversion.
john@zotac:~/linuxcnc/python/todd$ ./todd.py
line read from file
G1 X7.286672 Y10.920909 Z-0.165422
split into a list
['G1', 'X7.286672', 'Y10.920909', 'Z-0.165422']
append W coordinate
['G1', 'X7.286672', 'Y10.920909', 'Z-0.165422', 'W-0.165422']
new line of code converted back to a string
G1 X7.286672 Y10.920909 Z-0.165422 W-0.165422
The python code to get this far.
#! /usr/bin/env python
openfile = open('todd.ngc', 'r')
temp = openfile.readline()
print 'line read from file'
print temp
if temp.find('Z') != -1:
words = temp.rstrip('\n')
words = words.split(' ')
print 'split into a list'
print words
newword = ''
for i in words:
if i[0] == 'Z':
newword = 'W'+ i[1:]
if len(newword) > 0:
words.append(newword)
print 'append W coordinate'
print words
newline = ' '.join(words)
print 'new line of code converted back to a string'
print newline
openfile.close()
John
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- Todd Zuercher
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15 Feb 2013 21:59 - 15 Feb 2013 22:02 #30118
by Todd Zuercher
Replied by Todd Zuercher on topic Creating a Script
Thanks
Last edit: 15 Feb 2013 22:02 by Todd Zuercher. Reason: Duplicate post
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- Todd Zuercher
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15 Feb 2013 22:00 #30119
by Todd Zuercher
Replied by Todd Zuercher on topic Creating a Script
Yes this is a twin spindle router and It uses analog tourque mode servos. I need both W and Z to be able to use their own offsets for setting depth on the tools and to allow for varriations in material thickness between parts. For these reasons I don't think just slaving one axis to the others signal and gantrykins will work for me. Maybe I am wrong about Gantrykins, I have not played with it alot (i dismissed it as unusable pretty early). I'll have to set up another sim configuration to play with it a little more. In the mean time I still feal that setting up a filter program will give me my best results.
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15 Feb 2013 23:38 #30126
by BigJohnT
Replied by BigJohnT on topic Creating a Script
I'll put some more time on this at lunch, It does depend on the space being between the axis words to work. Is that the case in your G code files?
John
John
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