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> Modifying a post processor Age 3, Modifying a post processor Age 3
Bob Gray
post Apr 4 2014, 03:28 AM
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Hi, how hard is it to modify a post processor for the prototrak. I output a file using the supplied post processor and noticed that there were some conversion to Age 3 problems. Such as only starting to feed in once the tool had already rappited to depth.

Is it possible to change the post so it outputs in this format. The company has an old seat of Surfcam and Age 3 seems okay if the format is like the Attached.

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N955 M30
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Sprut_UK
post Apr 4 2014, 09:21 AM
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Hi Bob,

What are the conversion problems precisly? Are you importing the g-code as a CAM file? Do you have the DNC option fitted to the machine / control?
In my experience, when using the retrieve CAM option with the older ProtoTRAK controls it is not uncommon for there to be 'Parallel mill to mill' errors etc. which basically means 2 milling moves that represent a straight line. This most commonly occurs where any CAM software generates a Z feed move down to the top of the job followed by another Z feed move down to the first depth.
The DNC mode simply runs the native g-code file without the need for conversion and allows full 3D machining avoiding the CAM conversion errors.

Later ProtoTRAK's (PT4 / PT5) use *gcd files instead which is basically the same as the previous *.dnc files but with slightly better support for CRC (G41 / 42 etc.).

It is possible to emulate the native ProtoTRAK language although this is a lot more involved but can solve 'Parallel mill to mill' errors.

Dave


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"Never interrupt your opponent when he is making a mistake..." - Napoleon Bonaparte
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Bob Gray
post Apr 4 2014, 08:54 PM
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I took a very careful look at the code. At least one error is a missing decimal point. I'll be done with the job today and try stepping threw the post op code and see if I can isolate the problem.
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Sprut_UK
post Apr 6 2014, 09:59 AM
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QUOTE (Bob Gray @ Apr 4 2014, 09:54 PM) *
I took a very careful look at the code. At least one error is a missing decimal point. I'll be done with the job today and try stepping threw the post op code and see if I can isolate the problem.


Ok, thanks for the update. Let us know where the errors lie in the created g-code file, then we can look for the cause either within the postprocessor itself or maybe within the SprutCAM project.

Dave


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"Never interrupt your opponent when he is making a mistake..." - Napoleon Bonaparte
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