Messages

7871

General Mach Discussion / Re: Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 06:27:28 AM »

Hi Hood,

Thanks for your response - Yes it is for no delay, or switching at the point of the axis movement, for a laser.

Funny enough the M10 /M11 combo also suffer similar, although slightly different, behavior. There is definitely something strange here as I have tried different computers with the same result.

I have attached a modified (m10/m11) version of the earlier GCode just in case anyone wants to see the difference.

Tweakie

7872

General Mach Discussion / Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 02:58:07 AM »

I am having an issue with switching output #1 with the commands E1P1 and E1P0.

For most of a program it works just fine then suddenly gets confused (particularly with short moves) then returns to working just fine again.
Despite much experimentation I have not been able to get to the bottom of this or find the cure.

If anyone has experienced this problem and discovered the reason or found a cure I would be most grateful to learn the answer.

I have attached a simple GCode which exhibits this problem.

Thanks,

Tweakie.

7873

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

« on: June 27, 2010, 01:27:28 AM »

Think I have done it this time fellas. The temperature controller arrived yesterday, it's bigger than I had originally thought and gray paint or not, I can't find anywhere to fit it. 
I haven't found the right thermocouple yet so I may try my hand at making one (if I can find my spot welder which I don't think I have used in the last 10 years).

Tweakie.

7874

Show"N"Tell ( Your Machines) / Re: 7X14 MINI LATHE - CNC CONVERSION

« on: June 26, 2010, 12:08:13 PM »

Looking forward to reading all about this Rich.

Tweakie.

7875

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.

7876

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.

7877

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.

7878

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.

7879

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

7880

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.