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641  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 27, 2010, 01:21:43 PM
Dan,

Here is what I got so far on the wizard you have requested. I am still finishing up on the code. Let me know what you think.


Wes



Hi Wes,

Looks great! Exactly what I was meaning. Just a minor display note - the workpiece image is not symmetrical about the centre line.

Dan
642  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 27, 2010, 11:40:03 AM
Hi Rich,

Use the simple threading wizard for internal threads all the time. Define the start and end diameters correspondingly and it will do internal or external.

Dan
643  Mach Discussion / Works in progress / Re: Three Page Lathe Screen on: November 27, 2010, 01:19:30 AM
Hi Wes,

OK, so where do I get the latest screen set and wizards from? If you can do the wizard I would be glad to test it.

Since you're working on this, can you please start a topic for suggestions and new wizards development?

Dan

644  Mach Discussion / Works in progress / Re: Three Page Lathe Screen on: November 27, 2010, 01:03:50 AM
Hi Wes, Rich,

Thank you for your work on the lathe wizards. Much appreciated!

Would you please direct me where do I download the additional wizards from and how do I install them? Are they tied to the above particular screen set?


And if I may ask for something (don't know if it's the right place), I would like to have a wizard that does concave OD arc. It is the opposite of the wizard called "OD Arc 3".

Thanks,
Dan
645  Mach Discussion / VB and the development of wizards / Re: Complex Turning Wizard..... Possible re-do/upgrade.... anyone? on: November 25, 2010, 01:34:31 AM
Hi Scott,

Sorry to miss this thread. I would be very much interested in adding more useful wizards to lathe. Sorry I don't know what exactly you're talking about... what is the "Complex Turning Wizard" and what is the "Quick Threads" one?

Where do I get them?

Dan
646  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: November 24, 2010, 02:41:00 AM
The lathe is starting to shape up really nice. I like it a lot!

Dan
647  Mach Discussion / General Mach Discussion / Re: Jogging to work piece on: November 23, 2010, 07:02:50 AM
Hi Rick,

Telling Mach the tool diameter won't help. It is only used for G41/G42 cutter compensation.

You need to define the tool centreline regarding the work piece. If you touch off the work piece and zero the axis, the centreline would be away from the work piece edge by the tool radius. So instead of zeroing it enter in the DRO the cutter radius. Account for the side you're approaching the work piece from to decide if the offset is positive or negative.

Dan
648  Mach Discussion / FAQs / Re: Losing steps or something? on: November 22, 2010, 02:21:53 AM
I got a chance to look at the outputs of the parallel port after untangling the redundant ports and pins situation that the Smoothstepper was warning me about.  The Direction signal is now a steady state.

I would have never guessed this could be causing the problem. Thanks for the update, Don.

Dan
649  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: November 21, 2010, 07:06:33 AM
Thanks for the reply Dan, I don't see how motor voltage makes a difference as long as the PSU is also 50v can you please explain.
2:1 is the motor the 2 or the 1?

thanks.

Hi,

Read this guide on stepper motors: http://geckodrive.com/upload/Step%20Motor%20Basics%20Guide.pdf

A very informative one.

And yes, the motor does 2 revolutions for each revolution of the screw.

Dan
650  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: November 21, 2010, 01:44:59 AM
I will second what Hood said - belt drives are easier to setup and in my opinion are the correct way to build a good machine. I think a 2:1 reduction will work great with the motor you chose. Another thing to consider when choosing the drives is the motor voltage. The G251 are 50V, so motors should be rated not more than some 3-4V if you want to get the max speed out of them.

Dan
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