Re: [CAD_CAM_EDM_DRO] gcode question

Make your plunge in Z e.g. G01 Z-.1 F5

Remove the Z value from your G2 lines.


What your code is telling it is to start at Z.1 in line 35 (1/10" above
Z0") and then "end up" at Z0 in the motion described in line 40, a circular
interpolation. The result is that over the course of that interpolation, the
height will go down from Z .1 to Z0.

Take out the Z value from line 40, and Z will remain the same as wherever it
is. If you just have to have a Z value in there to make yourself happy then
put it at the depth you want to cut and make sure you set it up in a plunge
so it is already at that depth before your G2 line

Hope this helps- did you follow that?

-Will


Remove your

----- Original Message -----
From: "Michael Fagan" <woodworker88@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, December 15, 2009 1:12 AM
Subject: Re: [CAD_CAM_EDM_DRO] gcode question


> Basically what it's doing is that it's helical ramping into the part, but
> then not doing a finish pass. You need to tell the CAM software to do a
> finish pass after the helical roughing pass.
>
> On Mon, Dec 14, 2009 at 23:54, ebiz_59 <chuckm@...> wrote:
>
>>
>>
>> We rookies were trying to make some chain idlers (small disks with center
>> hole, 4 hole bolt pattern) with our X2 cnc tonight and had some trouble
>> getting a plunge to occur. The circles would cut, but they would start at
>> the surface and plunge 0.10 inch gradually as they cut the 360 degree
>> circles. I am new at this, and don't exactly know how this is supposed to
>> happen, but I'm betting we either need to do in initial plunge for each
>> circle, or we need to do a second pass around each circle without
>> additional
>> plunge so we finalize the cuts. Any help would be greatly appreciated.
>> thanks Chuck
>>
>> N5 (File Name = idler on Monday, December 14, 2009)
>>
>> N10 (Default Mill Post)
>>
>> N15 G91.1
>>
>> N20 G0 Z1.0000
>>
>> N25 M3 S2000
>>
>> N30 X0.5415 Y0.4715
>>
>> N35 Z0.1000
>>
>> N40 G2 Z0.0000 I-0.0700 J0.0000 F5.00
>>
>> N45 G0 Z1.0000
>>
>> N50 X0.8505 Y0.6935
>>
>> N55 Z0.1000
>>
>> N60 G2 Z0.0000 I-0.1570 J0.0000
>>
>> N65 G0 Z1.0000
>>
>> N70 X0.9855 Y0.9155
>>
>> N75 Z0.1000
>>
>> N80 G2 Z0.0000 I-0.0700 J0.0000
>>
>> N85 G0 Z1.0000
>>
>> N90 Y0.4715
>>
>> N95 Z0.1000
>>
>> N100 G2 Z0.0000 I-0.0700 J0.0000
>>
>> N105 G0 Z1.0000
>>
>> N110 X1.3870 Y0.6935
>>
>> N115 Z0.1000
>>
>> N120 G2 Z0.0000 I-0.6935 J0.0000
>>
>> N125 G0 Z1.0000
>>
>> N130 X0.5415 Y0.9155
>>
>> N135 Z0.1000
>>
>> N140 G2 Z0.0000 I-0.0700 J0.0000
>>
>> N145 G0 Z1.0000
>>
>> N150 M5
>>
>> N155 M30
>>
>>
>>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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