Messages

1231

General Mach Discussion / Re: G31 Probe problem

« on: July 30, 2011, 05:54:11 AM »

probing does not NEED to "stop on the mark". When it trips, as long as it decels to a stop BEFORE it reaches the mechanical end of travel of the probe, then all is well and perfectly accurate because it is the trip point that is stored NOT the stop point. As Terry has said, G31 and I suspect G28.1 do not fair well (at least consistantly) in macros.

Ian

1232

General Mach Discussion / Re: Gaining steps...maybe? with Servo Drive

« on: July 28, 2011, 04:38:04 PM »

Ok well I tried it that way too. No movement either. Is this to rule out noise on the step signal?

That was the idea but apparantly it hasn't yielded anything useful, so sorry - I'm stumped.

Ian

1233

General Mach Discussion / Re: Gaining steps...maybe? with Servo Drive

« on: July 28, 2011, 05:35:55 AM »

ok, well I let it sit for about an hour with the spindle running. No movement in the head as far as I can tell.

OK. Check your Z step setting in ports n pins. Is it set active LOW?. If it is, set it active HIGH, just for this test, (then set it back afterwards). Re-test as you've just done with the spindle on and see if there's any drift this time.

Ian

1234

Video P*r*o*b*i*n*g / Re: Machcloud file extension question

« on: July 27, 2011, 05:24:05 PM »

what on earth is it doing there? Surely it could have been hidden a bit better than that  

Ian

1235

General Mach Discussion / Re: Gaining steps...maybe? with Servo Drive

« on: July 27, 2011, 03:06:34 PM »

try leaving your axis stationary a while and see if over time, it gently creeps upwards.

Try the above with the spindle on for a while.

Let's find the problem first... then Hood will find the remedy 

Cheers

Ian

1236

General Mach Discussion / Re: Gaining steps...maybe? with Servo Drive

« on: July 27, 2011, 01:32:46 PM »

I'm no servo expert but if it was noise on the encoder wires wouldn't that throw a fault? wheras noise on the step/dir wires... well I tried that one already - any joy - did you try it?

Cheers

Ian

1237

Video P*r*o*b*i*n*g / Re: Machcloud file extension question

« on: July 27, 2011, 01:18:28 PM »

Hi Vic

Never used Mach Cloud but I notice that the example file is just triplet values, whereas your file has x,y and z (and a) identifiers.

I've stripped out the x,y and z (and a and it's values). see if that's any better.

Cheers

Ian

1238

Video P*r*o*b*i*n*g / Re: Machcloud file extension question

« on: July 27, 2011, 04:30:01 AM »

Hi Vic

If I understand your broblem correctly it's not the wizard that saves a .txt file it's the M40 in the gcode created by the wizard that opens the text file - is that your problem?

Mach has a few issues with the use of the file dialog box. Although it suggests that your file will be saved with a .txt extension, as you've found out it doesn't allways work out that way. YOU have to specifically name your file something.txt at the file "Save as" dialog.

If you forget, all is not lost, after you've finished the gcode run, just right click on the file without an extension and choose "rename". Then just add the .txt extension. (or you can click the file twice and do the same thing - twice is not the same as double-click!)

Re: Wordpad: I havn't checked this but I suspect it uses a different line termination sequence to what MachCloud expects.

Cheers

Ian

1239

Newfangled Solutions Mach3 Wizards / Re: Digitize Wizard Issues

« on: July 27, 2011, 04:01:26 AM »

Glad it worked out Vic.

Cheers

Ian

1240

General Mach Discussion / Re: Motor issues

« on: July 26, 2011, 09:20:58 AM »

You may well be able to achieve the speeds you had set in the xml you posted. The torque curves for your motors suggest those speeds arn't unreasonable but there's so many variables it's difficult to predict. But remember that speed isn't everything, acceleration is important too. you'll just have to see when you drop your kernel frequency.

Cheers

Ian