Messages

141

G-Code, CAD, and CAM discussions / Re: G18 and G02 G03 problem

« on: April 03, 2013, 09:50:04 AM »

Not bad for the second G code ever by hand. 

Look like you don't need a cam program.

That toolpath thing was trapping me also sometimes. 

Alex

142

G-Code, CAD, and CAM discussions / Re: G-Code issue - different part than the design?

« on: April 03, 2013, 09:33:36 AM »

Your Code seems to be OK.
It looks like it has something to do with your setup and you are loosing steps.
Like Rich said take a piece of scrap for testing. You may try to run the code with low feedrate and only do a slight cut ( only scratch the material )
and look if it come out correct. If so then try to reduce the vel. and accel. in motor tuning. then try again with a normal cut. ( in a piece of scrap )
If the slight cut is coming out wrong then your setup is not correct or you may have loose cable or similar things.
BTW. It's still looking to me as your Y axis direction is reversed.When you are in front of your machine ( X movement to left and right)
when you then jog to Y+ Direction the tool should go away from you.

Alex

143

G-Code, CAD, and CAM discussions / Re: G-Code issue - different part than the design?

« on: April 02, 2013, 10:06:02 PM »

Hi,
as Atlas says maybe the load is to high and you lost steps or your part moved.
At the end of your code you should change the G90Z0 to G90Z2.
It looks like your Y axis is running in mirror image,  Y+ and Y- are  reversed ?

just a thought

Alex

144

General Mach Discussion / Re: G76 threading issues - any thougts?

« on: April 02, 2013, 05:03:24 PM »

Hi,
tested some things. Unfortunately can not make a real test because the lathe is disassembled in the moment. This is what I tested using version .062
Created a Brain that gives me an index pulse. Then loaded the XML from Simon and the G code an run it. Everything looks like I expected it. The code
was running without problems. After a couple of hours testing I decided to wire an index sensor to the PP to see if that makes a difference.
Its also running fine here, so far as I can say.


Alex

145

Newfangled Solutions Mach3 Wizards / Re: NFS Turn Wizard

« on: April 02, 2013, 04:38:51 PM »

Hi Ron,

Can one of the metric users come in here and tell me if it does handle metric threads correctly?

Yes and no 

When you type in the correct TPI ( we should call it TPMM in this case ) then you will be fine.
The problem is in metric we don't use TPI ( TPMM ) , we use TPT ( Thread per Turn )
Or in other words the imperialist says e.g. 20 turn per unit  and the metric says e.g. 1.5 units per turn.

If Alan want to code a thread then he have to calculate it for now . Example: Thread M20 x 2.5 =

1/2.5 = 0,4 TPI ( TPMM )


Hope that helps. 

Alex

146

General Mach Discussion / Re: G76 threading issues - any thougts?

« on: April 01, 2013, 10:25:14 AM »

Hi all,
Simon0362 in your video the Speed DRO is at zero rpm.
Maybe I am wrong, but I think you have to code a speed for threading
( S230) in your case.

just a thought

Alex

147

*****VIDEOS***** / Re: Shuttle v2 Mach3

« on: March 31, 2013, 08:35:22 PM »

Hi,

create a macro e.g.  m1234.m1s

in your profile macro folder e.g.   C:\Mach3\macros\Mach3Mill

config plug in ( see image )

the macro may look like this

Call Code("G0 Z1")
While ismoving()
Sleep 100
Wend

be careful
when you hit the button the Z axis is going to Z0 with rapid traverse
the same when you code m1234 in MDI or within your G code.
The Z0 position depends on your coordinate system setting
( G54 G55 G56 ....  G53 G52 G92 )

the safest choice is to use a fix position in G53 ( machine coordinates )

just a thought

Alex

148

General Mach Discussion / Re: Cutter Compensation and Arcs: Confused by tool path from G02 when G42 is used

« on: March 31, 2013, 03:21:15 PM »

Hi,

I uspect that teh sprial line is the actual tool movement and the purple line is what your part will end up looking like?

that's  right.

Here is an example how it should look like.

G00 Z10.0
G00 X10.0 Y19.0
G01 Z5.0 F500
G42 G1 X25  P3.125 (start cutter comp lead in move )
G02 X25.0 Y19.0 I-25.0 J0 ( cut circle midpoint  X0 Y19  50mm Diameter )
G40 G1 X10 (stop cutter comp lead out move )
G0 Z10
M30
%

just a thought

Alex

149

General Mach Discussion / Re: 3d test file

« on: March 29, 2013, 11:58:14 AM »

HIYA TP
You r welcome. 

Alex

150

General Mach Discussion / Re: 3d test file

« on: March 29, 2013, 11:06:56 AM »

Hi TP,
something like this ?

Regards
Alex