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Messages - Tweakie.CNC

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5681
General Mach Discussion / Re: axis calibration problem
« on: June 02, 2011, 02:14:09 AM »
Even a plain threaded rod with nuts won't have 1/2" backlash.................something is loose.
RICH

Rich,

You have to think outside the box.
An axis which is tight in one direction only can loose steps in that direction and then be 1/2" out when it returns, nothing needs to be loose.  ;)

Tweakie.

5682
General Mach Discussion / Re: axis calibration problem
« on: June 01, 2011, 11:17:23 AM »
Could it be that there is some tightness or binding in the threaded rods which is greater in one direction than the other ?

Tweakie.

5683
General Mach Discussion / Re: 8 position lathe toolchanger
« on: June 01, 2011, 07:47:53 AM »
The Visual Basic version used is Cypress Enable and the commands and syntax in PDF format can be downloaded from here;

http://www.machsupport.com/forum/index.php?action=dlattach;topic=18062.0;attach=26020

Also Scott's Mach specific routines here;

http://www.machsupport.com/forum/index.php?action=dlattach;topic=11056.0;attach=14194

http://www.machsupport.com/forum/index.php?action=dlattach;topic=11061.0;attach=14193

Hope this helps,

Tweakie.

5684
Hi Thys,

Welcome to the forum buddy - It is nice to see that you are already helping others to get their machines working.  :)

If you click on Reply (not quick reply) enter your message then click on Additional Options you can Choose File to select your picture, attachment etc.

Tweakie.

5685
General Mach Discussion / Re: Probe wiring
« on: June 01, 2011, 01:53:28 AM »
I think you need to return to what Terry said earlier;

"From the MDI screen type G31 X-2 F10 (followed by return) . The machine should start moving in the X- direction then trip the probe with your finger to see if it stops".

If the machine does not move, then we need to establish why.
Does the X Axis DRO indicate the move ?

Tweakie.


5686
Brian,

If you are measuring the voltage output from the computers parallel port then connect the multimeter between GND (0 Volts) and an Axis direction pin. The voltage should change between 5 volts (or 3.3 Volts) when the axis is jogged in one direction and 0 Volts when the axis is jogged in the other direction.
(the C10 can accept 3.3 Volt or 5 Volt inputs).

Tweakie.

5687
General Mach Discussion / Re: Probe wiring
« on: May 31, 2011, 04:21:22 AM »
The problem you have at the moment is that the Digitize LED is defined on the Mach Screen as OemLED 825 and the Ajax instructions say that it writes the 'point of contact' to DRO1999. As it stands this will not illuminate any LED's on the Mach screen.
Somewhere there is an Ajax probing script (or routine for using a probe) which translates this DRO1999 into something that Mach recognises as the point of contact.

Tweakie.

5688
General Mach Discussion / Re: Spindle probe and edge finding
« on: May 30, 2011, 02:04:35 AM »
I have not used it but it May be worth taking a look at this http://www.razordance.co.uk/probe25D.htm

Tweakie.

5689
General Mach Discussion / Re: Probe wiring
« on: May 29, 2011, 12:22:26 PM »
I think you are right Terry, even the guys on the Ajax forum don't really seem to know the answer to this one. This is why I would like to see the probing routine to find out how it interprets and applies the DRO 1999.

Tweakie.

5690
General Mach Discussion / Re: Mach3 problem with new cnc
« on: May 29, 2011, 12:16:42 PM »
I am a long way from being a computer expert in fact a long way from being an expert on anything but I think the onboard graphics makes the processor multi task with a different priority to what Mach requires so everything gets screwed up.
Here in the UK we have Car Boot Sales every weekend and second user PCI graphics cards cost peanuts so it is cheap to try and if it doesn't work well nothing lost.
A plug-in graphics card  usually works as long as the onboard graphics can be disabled in the BIOS and it can be as old as you like (as long as it matches the slot voltage) because it only has to provide an 800 x 600 display as minimum - surely you must be able to borrow one to try ?

Tweakie.

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