Messages

7511

General Mach Discussion / Re: help with DC DC converter

« on: June 26, 2010, 12:03:59 PM »

Hi again,

I have searched the internet for more info on this assembled AFC5 device of yours without success.
My suggestion is that you forget about it - a dc to dc converter in itself would do little if anything to reduce any electrical noise in a CNC system anyway. If you feel that you have a noise problem then some very good tips have been detailed by Bob Warfield both here http://www.cnccookbook.com/CCCNCNoise.html as well as on this forum.

Sorry I can't be of more help.
Best regards,

Tweakie.

7512

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: June 26, 2010, 01:11:38 AM »

Yea - come on Sam you are lagging behind on this one. 

Tweakie.

7513

General Mach Discussion / Re: help with DC DC converter

« on: June 26, 2010, 01:09:20 AM »

Thanks for the explanation, I understand now.

Do you have noise on the drive signals, limit switch inputs or the power lines ?.

Tweakie.

7514

General Mach Discussion / Re: help with DC DC converter

« on: June 25, 2010, 11:39:53 AM »

What do you hope to achieve by using the device please ?.

It appears to be a serial / parallel or parallel / serial converter of some sort but I am uncertain of it's application.

Tweakie.

7515

General Mach Discussion / Re: Auto Tool Zero for XY&Z?

« on: June 24, 2010, 02:56:29 PM »

Hi,

I was interested to find out if the G31 would halt movement of other axis rather than just the Z and yes it does. This is what I tried.
The GetVar() relates to the axis position DRO at the point of touch but as you seem to be centering within a ring the actual position is not relevant as long as you zero the DROs when done you have effectively zeroed the machine to a (presume cross hair) defined point.
You still need to do a bit of work on your script but you are nearly there.

Tweakie

7516

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: June 24, 2010, 05:26:47 AM »

OK Dave - I am sharing.

Still working on ways to improve the finished cut quality of acrylic parts. Having solved the problem with striations on the cut edge my next problem was with reflections from the table or work supports overheating or damaging the finish on the reverse of the work. These reflections were traveling about 50 - 80 mm beyond the work and although they were well out of focus still contained enough energy to cause damage. All metals reflect at 10600nm but glass doesn't so a simple solution was achieved by making a wooden containing box with glass base then filling the box with aluminum, concertina bent, venetian blind slats (on end) as the work support. This really does work so well and the money I have saved over buying ready made honeycomb cutting bed material can all be spent on Beer  (Dave, Sam & Russ would approve of this, I thought).





Tweakie.

7517

General Mach Discussion / Re: Auto Tool Zero for XY&Z?

« on: June 24, 2010, 03:25:17 AM »

Hi,

Very interesting question - I just tried this and it seems to work OK.
I presume GetVar(2000) would return the X and GetVar(2001) the Y positions.

Tweakie.

7518

General Mach Discussion / Re: QUESTION ABOUT FEED HOLD and spindle stop

« on: June 24, 2010, 02:12:28 AM »

Hi Rene,

I have to admit this is above my head - as much as I would really like to understand Mach / Sewing / Embroidery machine control, as yet, I have no practical experience of this usage. (I do read all related posts here and on the zone in an attempt to get an understanding but I think there is no substitute for practical experience - I have just got to build one of these machines and try to get Khalid to share his software).

I do favor the usage of VB screen buttons to make the Mach screens more suited to an actual machine and because these buttons are so easy to re-program 'trial and error' can be used for the operation sequences entered into the buttons to find / establish the perfect combination.

Tweakie.

7519

VB and the development of wizards / Re: Y, U, V Change X DRO

« on: June 24, 2010, 01:55:44 AM »

Hi Csaba,

Perhaps someone else can figure this one out but I really can't understand exactly what you are doing or just why you would use multi-axis software / GCode just to control one machine axis.

I know it's not resolving your problem but I would like to understand (assuming it's not totally beyond me) exactly what you are doing with this machine.

Tweakie.

7520

General Mach Discussion / Re: QUESTION ABOUT FEED HOLD and spindle stop

« on: June 23, 2010, 06:44:01 AM »

Hi Rene,

I think you have answered your own question here. The usual sequence is :-

Feed Hold - to stop program
Stop - to stop spindle
Start Cycle - to resume (but you have to restart the spindle manually)

If you feel inclined you could create two extra VB screen buttons to perform these tasks, perhaps in a better way (Pause / Resume).

Tweakie.