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Messages - Tweakie.CNC

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4951
General Mach Discussion / Re: first run with mach3
« on: October 28, 2011, 07:04:37 AM »
dear Tweakie

I just try another smaller nema 11 ,yesterday the motor can run by jog with keyboard or DMG on srenn , but when I run use G0 command ,the motor run about 3/4 turn ,stop for a while ,then run again 3/4 turn ,stop ,then run again .

what is this cause from ?.

pls advise.

thank you


Hi Asen,

My guess is that it is your PC.
If it is running background tasks or sharing application time like multi-tasking then this may cause the issue you are having.

Tweakie.

4952
General Mach Discussion / Re: TB6560 - Mach3 and laser firing
« on: October 28, 2011, 01:53:43 AM »
Hi Richard,

If you haven't read it already you may find this thread of interest http://www.machsupport.com/forum/index.php/topic,12444.0.html

Tweakie.

4953
General Mach Discussion / Re: newbie problem cutting circle
« on: October 27, 2011, 11:16:58 AM »
OK, I think I understand now.  ;)

Go into config / general config page and change IJ Mode to Inc

That should do it.

Tweakie.

4954
General Mach Discussion / Re: TB6560 - Mach3 and laser firing
« on: October 27, 2011, 06:08:27 AM »
Hi Richard,

It is perhaps easiest to choose an output pin# which is available at a connector on your controller board for the Z Axis direction pin (then set this within Mach as the Z axis dir pin#).
I have pin#16 set as the direction pin and this is then connected to the laser trigger. The pin can be toggled, within Mach, active high / active low to suit you laser TTL logic input.

Hope this helps,

Tweakie.

4955
Tangent Corner / Re: A Winter Project.
« on: October 27, 2011, 05:35:41 AM »
I understand what you say Terry and you are, of course, quite right but there are probably a lot more of these APU’s than there are Vulcan bombers right now.
There are two Vulcan’s near to me and neither have their APU’s in working order but according to the manual these units have to be run-up and tested every 7 days to stay within service. To keep everything in the aircraft working would need a full time, trained, ground crew of 18 and goodness knows what quantity of spares – an almost impossible task for the historical aircraft preservation groups.

Almost everything about this APU is over engineered and it seems that little consideration for weight has been given in many areas. This Rotax Actuator is one of two (one for the oil cooler radiator blind and one for the ‘run / stop’ fuel valve) and is a typical example where, for instance, the ‘mod record label’, which is just one small (non-critical) part, is fixed with 4 stainless screws which are then locked with seizing wire when a label could have been fixed with small rivets (like the identity label) or even had the legend engraved into the surface.
Both these actuators had age related faults, one with a jammed limit switch and the other with a seized motor shaft brake, but both units working again now.

Overall I do understand that this equipment is historically important and will outlive me so I am really just looking after it and keeping it in working condition for someone else who will perhaps carry out a full restoration job at some future date.

Tweakie.

4956
General Mach Discussion / Re: newbie problem cutting circle
« on: October 26, 2011, 11:44:34 AM »
Hi Trisdan,

I think you need to set your work offsets to zero (then regen toolpath to see the changes) if you want the program limits to show just + and - 13 etc.

Tweakie.

4957
Tangent Corner / Re: A Winter Project.
« on: October 26, 2011, 09:25:12 AM »
Thanks Russ.

I am going to make a framework, on wheels, for mounting this engine and just had the thought that this could be the fastest stationary engine in the UK.  ;D

Tweakie.

4958
 I just need your PIN number Brett  ;D ;D

Tweakie.

4959
Tangent Corner / Re: A Winter Project.
« on: October 25, 2011, 08:34:28 AM »
Great suggestion Brian.  ;D ;D

Do you think my Z Axis stepper may struggle a little with the +Z moves ??

Tweakie.

4960
Tangent Corner / Re: A Winter Project.
« on: October 25, 2011, 07:29:57 AM »
Thanks for the info Terry.

Tweakie.

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