Messages

1

G-Code, CAD, and CAM discussions / Converting seconds to milliseconds

« on: October 21, 2008, 09:21:13 PM »

Hi,

My G-code contains dwell times in milliseconds, but Mach3 interprets it in seconds. So, I end up waiting 80 seconds burning my tool instead of a quick 80 milliseconds.
Anyone know how to ask Mach to interpret in seconds? I'm tired of editing my G-code.

Thanks
aleks.

2

General Mach Discussion / ellipical path in MACH3

« on: February 23, 2008, 09:55:15 PM »

Hi
Is there a way to have my CNC lathe cut an elliptical path? Or does G code only operate using circle arcs and lines?
Thanks
Aleks.

3

General Mach Discussion / Spontaneous Mach Turn Shut off

« on: January 23, 2008, 10:54:50 PM »

Hi, i used Mach turn for a whole project and things worked ok.
Now, i output a G-code file from mastercam X, ran it in Mach turn, and the thing shut off. I turned the computer on/off and it did it again.
Basically, after loading the file, Mach turn either shuts off right away, or moments later when i start setting up my job. What's going on?
Has anyone experimienced this?

4

General Mach Discussion / Re: Mach3 ignores Feed Speed

« on: January 02, 2008, 01:29:17 PM »

Thanks alot! I really appreciate it!
Here is the lathe post processor which i already modified by changing the y scaling from 2 to -2.
All I would need is to add a line of G94 at the beginning of every code, because i always use metric.
Also, if you know how to resolve this problem with a few mouse click, i'd be very greatful aswel: http://www.machsupport.com/forum/index.php/topic,5331.0.html
Thanks
Aleks.

PS: I changed the extension of the MPLFAN From .pst to .txt because machsupport didn't like the other extension

5

General Mach Discussion / Re: Mach3 ignores Feed Speed

« on: January 01, 2008, 08:12:20 PM »

Thanks! It worked!
I thought that G21 took care of everythin, but i guess G94 is necessary
Now is there a way to change my post processor to add that in every time to avoid catastrophe in the future?

6

G-Code, CAD, and CAM discussions / Re: Mastercam Inverts my X axis

« on: January 01, 2008, 07:52:34 PM »

ACtually, i already started a new topic for this:
http://www.machsupport.com/forum/index.php/topic,5331.0.html
thanks for the help Brett!

7

General Mach Discussion / Mach3 ignores Feed Speed

« on: January 01, 2008, 06:55:32 PM »

Mach3 doesn't take into account my feeds. It just runs everything at rapid = 1000mm/min
What's the deal?

Thanks
Aleks.

Here's the G-code:
%
O0000
(PROGRAM NAME - TURNING POST 04)
(DATE=DD-MM-YY - 01-01-08 TIME=HH:MM - 18:34)
(MATERIAL - ALUMINUM MM - 2024)
G21
(TOOL - 1 OFFSET - 0)
(OD ROUGH RIGHT - 80 DEG.  INSERT - CNMG 12 04 08)
G0 T0100
G97 S1500 M03
G0 G54 X23.1 Z.5 M8
G98 G1 X-2.8 F80.
G0 Z1.5
X23.1
Z0.
G1 X-2.8
G0 Z1.
X19.33
Z4.5
G1 Z2.5 F150.
Z-9.705
X20.123 Z-10.391
X22.951 Z-8.977
G0 Z4.5
X18.538
G1 Z2.5
Z-9.019
X19.73 Z-10.052
X22.559 Z-8.637
G0 Z4.5
X17.746
G1 Z2.5
Z-8.333
X18.938 Z-9.366
X21.767 Z-7.951
G0 Z4.5
X16.954
G1 Z2.5
Z-7.647
X18.146 Z-8.679
X20.974 Z-7.265
G0 Z4.5
X16.161
G1 Z2.5
Z-6.961
X17.354 Z-7.993
X20.182 Z-6.579
G0 Z4.5
X15.369
G1 Z2.5
Z-6.275
X16.561 Z-7.307
X19.39 Z-5.893
G0 Z4.5
X14.577
G1 Z2.5
Z-5.589
X15.769 Z-6.621
X18.598 Z-5.207
G0 Z4.5
X13.785
G1 Z2.5
Z-4.903
X14.977 Z-5.935
X17.805 Z-4.521
G0 Z4.5
X12.993
G1 Z2.5
Z-4.217
X14.185 Z-5.249
X17.013 Z-3.835
G0 Z4.5
X12.2
G1 Z2.5
Z-3.53
X13.393 Z-4.563
X16.221 Z-3.149
G0 Z4.5
X11.408
G1 Z2.5
Z-2.844
X12.6 Z-3.877
X15.429 Z-2.463
G0 Z4.5
X10.616
G1 Z2.5
Z-2.158
X11.808 Z-3.191
X14.637 Z-1.777
G0 Z4.5
X9.824
G1 Z2.5
Z-1.472
X11.016 Z-2.505
X13.844 Z-1.09
G0 Z4.5
X9.031
G1 Z2.5
Z-.786
X10.224 Z-1.819
X13.052 Z-.404
G0 Z4.5
X8.239
G1 Z2.5
Z-.1
X9.431 Z-1.132
X12.26 Z.282
G0 Z1.85
X8.066
G1 Z-.15 F50.
X19.949 Z-10.441
X22.778 Z-9.027
G0 Z1.8
X7.893
G1 Z-.2
X19.776 Z-10.491
X22.605 Z-9.077
G0 Z1.123
X17.542
G1 Z-.877 F200.
Z-78.587
X19.289 Z-80.1
X22.118 Z-78.686
G0 Z1.123
X15.795
G1 Z-.877
Z-77.074
X17.942 Z-78.933
X20.77 Z-77.519
G0 Z1.123
X14.047
G1 Z-.877
Z-75.56
X16.195 Z-77.42
X19.023 Z-76.006
G0 Z1.123
X12.3
G1 Z-.877
Z-74.047
X14.447 Z-75.907
X17.276 Z-74.493
G0 Z-1.377
X12.3
G1 Z-3.377 F50.
Z-74.047
X19.289 Z-80.1
X22.118 Z-78.686
G0 Z-1.377
X12.1
G1 Z-3.377
Z-74.074
X19.116 Z-80.15
X21.944 Z-78.736
G0 Z-1.377
X11.9
G1 Z-3.377
Z-74.101
X18.943 Z-80.2
X21.771 Z-78.786
G0 Z-78.
X19.45
G1 Z-80.
Z-90.
X22.278 Z-88.586
G0 Z-78.
X19.25
G1 Z-80.
Z-90.
X22.078 Z-88.586
G0 Z-78.
X19.05
G1 Z-80.
Z-90.
X21.878 Z-88.586
G0 Z1.25
M9
G28 U0. W0. M05
T0100
M30
%

8

General Mach Discussion / Re: Wrong Arc

« on: January 01, 2008, 06:36:01 PM »

Hi,
Im using Mastercam X and the MPLFAN.pst post processor which came with it. I had to modify it by changing the Y scaling from 2 to -2 because it was inverting my X axis output and i wanted positive values.
This might have something to do with the problem.
But i'm wondering how MACH3 is supposed to know which arc to take, considering there are two to choose from?

As for the DXF, i didn't save it. But it's basically what you see in the GIF above. The problem will occur with any outer radius.

Any thoughts?

9

General Mach Discussion / Re: Wrong Arc

« on: January 01, 2008, 05:01:40 PM »

That reversed the direction of the arc... but the problem is that it chooses the wrong arc
This is what the piece should look like:

10

General Mach Discussion / Wrong Arc

« on: January 01, 2008, 04:39:55 PM »

When Mach3 decides which arc to choose between two point (X1,Z1) and (X2,Z2) with a given radius, it chooses the wrong one! see below
It takes the right direction, but it choose a different arc (any two points have two circles with the same radius going through them)
I'm not even sure how it's supposed to know which one to choose. Is it supposed to choose the shortest one?
Have can i fix this? Is it a Mach3 problem, or a Gcode problem.

Aleks.


Gcode:

%
O0000
(PROGRAM NAME - TURNING HOLDING POST 21)
(DATE=DD-MM-YY - 01-01-08 TIME=HH:MM - 15:47)
(MCX FILE -)
(NC FILE - C:\DOCUMENTS AND SETTINGS\ALEX\DESKTOP\TURNING HOLDING POST 21.NC)
(MATERIAL - ALUMINUM MM - 2024)
G21
(TOOL - 1 OFFSET - 1)
(OD ROUGH RIGHT - 80 DEG.  INSERT - CNMG 12 04 08)
G28 U0. W0.
G50 X30.669 Z19.972
G0 T0101
G97 S3600 M03
G0 X-.454 Z1.758
G50 S3600
G96 S550
G99 G1 Z-.242 F.2
X13.993 Z-7.655
G2 X20.122 Z-15.192 R10.8
G1 Z-35.66
X22.951 Z-34.245
G28 U0. W0. M05
T0100
M30
%