Messages

4761

General Mach Discussion / Re: Problem engraving - depth changes

« on: April 26, 2013, 05:03:32 AM »

Hi Dminnery,

Not sure if this is any help because I am just stating the obvious which I am sure you are aware of already…

Perhaps you could first check your GCode file to see if it is calling for any changes in depth of cut (Z).

If the GCode is always calling for the same depth then you need to check your machine (loose coupling, tool moving in collet, electrical noise issues, etc.etc.).

If the GCode is calling for different depth’s then you need to read up on the Vectric manual / tutorial video’s etc. relating to different toolpath generation methods (engraving / profiling / v-carving etc.).

Tweakie.

4762

Feature Requests / Re: Print to Cut functionality & Mach3 on router

« on: April 24, 2013, 10:39:48 AM »

Thinking about this…

Provided the distortion (difference in printed image size) was linear then if the printed image contained 3 dots in a dimensionally known position (similar to the illustration) then the camera could be used to measure the actual distance between Datum and 1 to get the angle of rotation or skew and the Y axis scale factor and then between Datum and 2 to get the X axis scale factor (again compensating for skew). The calculations could all be done automatically in a script similar to the previously linked thread.

Tweakie.

4763

G-Code, CAD, and CAM discussions / Re: All Dressed Up & No-Where To Go?

« on: April 24, 2013, 02:50:34 AM »

Hi Nick,

Welcome to the forum.

The first software that I started out with was G-Simple http://www.gsimple.eu/ it's pretty basic but it's free and may give you an initial start.

Tweakie.

4764

General Mach Discussion / Re: The ultimate pendant?

« on: April 23, 2013, 08:07:08 AM »

Hi John,

What an interesting device, I have not seen this before – but… I can’t help thinking that just one sneeze during tool setting could spell disaster. 

Tweakie.

4765

General Mach Discussion / Re: Driver Test problem - Not get strait line

« on: April 22, 2013, 05:03:37 AM »

I don't know if it helps as it relates to WinXP but Optimization.txt is under the heading Documentation here http://www.machsupport.com/downloads.php

Tweakie.

4766

Third party software and hardware support forums. / Re: Scrap a YOOCNC board for A?

« on: April 21, 2013, 11:27:52 AM »

Hi Carl,

Those Chinese TB6560 boards have been shown to be problematic (search otherTB6560 threads).

If you want quality and reliability then choose something like the Gecko G540 http://www.geckodrive.com/geckodrive-step-motor-drives/g540.html (small price to pay compared to Aspire).

Tweakie.

4767

General Mach Discussion / Re: Limits Activate when Spindle is Running ,, EMF ?

« on: April 21, 2013, 05:22:20 AM »

Excellent work Phill, you certainly deserve to be smiling. 

Tweakie.

4768

General Mach Discussion / Re: Newbie Questions

« on: April 21, 2013, 04:56:35 AM »

Hi Scgrove,

Welcome to the forum.

I don’t use Sheetcam (probably the best choice of software for you to use) but I do use Vectric.
I think you need to check your .dxf files for duplicate lines etc. and edit as necessary to get the drawing as you want it to be (origin etc.) then make sure the vectors are correctly joined before generating the GCode (the procedures are all detailed in the Vectric tutorials).

Hope this helps.

Tweakie.

4769

General Mach Discussion / Re: Limits Activate when Spindle is Running ,, EMF ?

« on: April 21, 2013, 04:18:27 AM »

Hi PhillM,

Welcome to the forum.

The electrical noise produced by VFD’s can sometimes be difficult to control but here are a few suggestions…

All limit switch (and e-stop) wiring should be made with shielded cable and the shield only connected to GND at the controller end.
The cable connecting the VFD to the spindle should also be shielded.
It is good practice to have an EMI filter in line with the mains input to the VFD.
Try to keep the limit switch wiring distant from all the VFD wiring.
Treat GND and EARTH as being two separate circuits.
Check for and eliminate GND loops – It is best to have a star connection at the controller and take all GND connections to this one point only.
Check for and if possible eliminate EARTH loops.

There are many more potential noise elimination steps to follow but these are my initial thoughts.

Tweakie. 

4770

General Mach Discussion / Re: Has anyone istalled a zero plate on a k2 3925

« on: April 21, 2013, 03:56:58 AM »

Hi Fleck,

I don't have a K2 but if it's any help this is the system I use http://www.cooperman.talktalk.net/files/17.htm

Tweakie.