Messages

1841

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 20, 2017, 05:02:18 AM »

Something else you should try is changing the toolpath to anti-clockwise as that will change the direction of loading on the lead-screws and may improve the backlash comp. performance. But overall nothing beats reducing the actual, mechanical, backlash.

Tweakie.

1842

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 20, 2017, 04:31:19 AM »

It could be flex in the material but I suspect backlash in the machine. Backlash comp. is OK but it is not the answer to all situations (toolpaths). Perhaps look toward reducing the actual backlash in the machine ?

Tweakie.

1843

FAQs / Re: motors change direction using test programme but will only jog in one direction

« on: November 20, 2017, 02:02:58 AM »

This problem can occur if the LPT parallel port (or motion controller) output is to the newer 3.3Volt TTL standard and the motor drivers are expecting a signal that is to the older 5Volt TTL standard.

Measure the voltage on an axis Direction pin and if the maximum voltage (measured whilst jogging in either direction) is 3.3Volts then that could be the issue. If you are using the computer's LPT parallel port then consider fitting a 5Volt PCI parallel port card but check these details first:  http://www.machsupport.com/forum/index.php/topic,34848.0.html

Tweakie.

1844

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 19, 2017, 11:23:04 AM »

Hi Daniel,

You also need to check your Z axis dimensions and it's placing in the code.
It Is usual to have Z zero as the top surface of the work and your initial cut of X-16 is perhaps a bit steep.

Tweakie.

1845

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 19, 2017, 11:08:20 AM »

Hi Daniel,

In Config. / General Config. change the IJ Mode then regenerate the toolpath.

To avoid this problem all Gcode containing arcs should include the G90.1 or G91.1 as appropriate.

Tweakie.

1846

General Mach Discussion / Re: Alright fellow campers...a frankenstein moment!!

« on: November 18, 2017, 01:47:31 AM »

Hi Bob,

There are a couple of Administrators here that work for Artsoft / NFS but all the Moderators are unpaid and are their own men.

Tweakie.

1847

Feature Requests / Re: Restart Modbus TCP connection

« on: November 15, 2017, 07:31:35 AM »

Hi Uli,

I have a licensed Mach4 set-up on my machine PC but all my production work is still done with Mach3. One day Mach4 will be ready to take over but it will not be today.

Tweakie.

1848

Tangent Corner / Re: Optical Illusion.

« on: November 15, 2017, 06:35:44 AM »

Interesting that the illusion can be reproduced by laser etching.

Tweakie.

1849

General Mach Discussion / Re: Alright fellow campers...a frankenstein moment!!

« on: November 15, 2017, 02:45:31 AM »

Just a suggestion...

I think you need to sort out some of your wiring - each drives supply (+ & -) should be wired directly back to the PSU and not a star and daisy chain as you have at present.

Tweakie.

1850

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: November 15, 2017, 01:34:14 AM »

Hi Leslie,

Sorry but I have absolutely no idea. I have never seen it for sale either so I suspect it went into a propriety system perhaps.

Tweakie.