Messages

181

Competitions / Re: ******Guess and win a G100 Grex******

« on: May 25, 2007, 09:18:18 AM »

My guess is:  2760800

But I have no ideia how did they were counted ....

Filipe

182

General Mach Discussion / Re: XZ plane arc bug ?

« on: February 09, 2007, 07:03:56 PM »

Chip: The code does not display or cut ok (my code). Your code, I will check out tomorrow.

La_coterie: The machine have 3 axis, that cuts a block of polystyrene and wood. The XY plane does a kind of cut with one tool, the XZ plane uses other tool (hot wire). The X axis is always moving.

183

General Mach Discussion / Re: XZ plane arc bug ?

« on: February 09, 2007, 02:50:20 PM »

As can be seen in the picture the toolpath done by the machine is also diferent from the toolpath presented by mach3.

If you can follow the picture from left to right, we can see:

first line ok, second line also good - Direction of the axis are correct. Then the arc. It starts in the right position but it does not go as the gcode or as the toolpath. The first arc should no be like this. The second arc, is like the gcode but different of the toolpath. So this arc is as the user would like. Then I stoped the machine and the straight line is not from the gcode. All the start and end position are correct.



Filipe

184

LazyCam (Beta) / Re: lazy cam and auto cad

« on: February 09, 2007, 05:29:03 AM »

Post the file were, I can have a look at it, and try to help.

Thanks

185

LazyCam (Beta) / Re: lazy cam and auto cad

« on: February 08, 2007, 02:58:20 PM »

I don't know autocad 14, but you should be able to "export" or "save as" the file directlly from autocad. This could prevent some troubles done by the dwg to dxf converter.

I tested autocad 2007, save all as dwg (using format autocad 2000) - it is a option when saving as dwg, without problems.

Filipe

186

LazyCam (Beta) / Re: Lazycam arcs output bug ?

« on: February 08, 2007, 08:34:02 AM »

I opened a new tread in the general forum, because it is not a bug of lazycam but, in my modest opinion, is a bug of mach3.
Mr Brian, if you can, see that thread, it is easy to see the toolpath (wrong in my opinion) and the gcode side by side.

If it was a problem, of seeing the CW or anti CW direction the toolpath in the XY plane would be the same of the one in the XZ plane. this do not happen and the XY toolpath is different from the one in the XZ plane, as I said before, only by changing the Y for Z, the J for K, and G17 for G18.

Filipe

187

General Mach Discussion / Re: XZ plane arc bug ?

« on: February 08, 2007, 02:12:26 AM »

044. It was the latetest two days ago.

Thanks

188

General Mach Discussion / XZ plane arc bug ?

« on: February 07, 2007, 04:11:35 PM »

Hello I started a topic with a similar name in lazycam, one day ago, but I think that the problem is not lazycam, but mach3.

If this is a bug, it is a big one. I hope I am doing nothing wrong because I am not a long time user.

I attached a very small Gcode (around ten lines). This code works very well if a user uses the XY plane. I am using the XZ plane, and the gcode is allready prepared for that, so if anyone wants to test is, nothing is needed to change in the config of the machine, you only need to load the code.

The problem is the directions of the arcs. G2 and G3 codes are not being interpreted correctly by mach3. Some arcs are being done CW when they should be the way around. This can be seen in the toolpath window.

As can be seen on the picture that I send, some arcs are OK, others do not. For an example, if you check the gcode line that appears on the window of the code (N70) it refers to a G2 code. What we can see on the toolpath is a G3 code!

Filipe

189

LazyCam (Beta) / Re: Lazycam arcs output bug ?

« on: February 06, 2007, 01:25:11 PM »

No. It is a custom machine for a client.

It have 3 axis. X is always running, and sometimes Y do the cutting others the Z does it.
For the posted problem it should not matter, right ? It is only a matter of calling Y or Z.
Try to change all the Y for Z and all the J for K in the gcode. You will get the wrong toolpath (and mach3 does it wrong also).

Normally what I expect to see is a translation from the xy plane to the xz plane, where the toolpath was the same, but it is not (or maybe I am doing something wrong).
If it is a bug is a severe one, so I am probably missing something.

Filipe

190

LazyCam (Beta) / Re: Lazycam arcs output bug ?

« on: February 06, 2007, 12:14:06 PM »

Ok it works for the XY plane.
I forgot to mencion that information.

My machine needs to cut something with the xZ plane.
So I changed all the Y codes to Z, and J to K. Removed also the Y lines (not needed because I only need the X and Z axis).
Also added the G18 insteed of the G17 to activate the XZ plane. The output was (and is) the same that I send the picture.

Something is wrong ! 

I attached again the gcode (that have the Z insteed of the Y).

Thanks