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Author Topic: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS  (Read 32527 times)

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Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #20 on: November 28, 2010, 01:14:48 AM »
Here are the correct size images.

Dan

Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #21 on: November 28, 2010, 01:49:45 AM »
Ok Dan,

Give this a go... please be careful as it needs to be tested before you can rely on it. Also Mach does not display the stock correctly but the cuts look ok from the DROs. I would recommend cutting air a few times before using it to do any work.



Wes,

All the other wizards work with "Reversed Arcs" checked. This one seems to require it be unchecked - otherwise the arcs look a mess. Anyway, it cuts a convex arc (like OD Arc 3). Also the Z Start and End (May be should be changed to Z Centre..) are swapped.

The gcode file puts out TyyyM6 for a tool change. The M6 needs to be omitted.

Dan

Dan

Offline DaOne

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #22 on: November 28, 2010, 02:02:25 AM »
Dan, can you please post a screenshot and you code output?  M6 is for a macro for people with auto tool changers.
« Last Edit: November 28, 2010, 02:04:54 AM by DaOne »

Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #23 on: November 28, 2010, 02:48:31 AM »
Wes,

Attached are the screen shots and the corresponding Gcode.

The syntax for a tool change in Mach3 has been changed years ago, not requiring the M6. Tool changers don't require it neither. I have a tool changer and I only program Txxyy and it knows to refer to the M6Start macro.

Dan

Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #24 on: November 28, 2010, 02:57:01 AM »
Another note. I like my programs in feed per revolution, but I work a lot from the MDI as well where I need it in feed per minute, since often the spindle is off. Sometimes I forget to program G94 after the program and commanding a move in the MDI with a feed like F100 results in a rapid move. Can the Gcode have a G94 in the end?

It may not be convenient for people working in G95 from the MDI, but at worst they will get a very slow feed if they forget to do a G95 after the program. I think it is better than a rapid into the workpiece.

Dan

Offline DaOne

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #25 on: November 28, 2010, 03:16:27 AM »
Dan, I am at a loss as to why your arcs look like this? I even tried your G-code on mine and it works great.

Must be something in the configuration.

Here is what it should look like...

Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #26 on: November 28, 2010, 03:33:25 AM »
Hmmm... Looks like some setting here. But then, just checked the other arc wizard and it shows a nice tool path with reversed arcs checked.

Will see if the incremental arcs may be affecting it, though it doesn't look to be the case here...

Dan

Offline DaOne

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #27 on: November 28, 2010, 03:38:25 AM »
Dan, I would like the gcode output to work on things other than just mach 3. I don't think the M6 code hurts anything does it? Mach3s way of using gcode is rather limited and I am shooting for a balance. Adding G94 shouldn't be an issue since its the default setup on startup anyways. I will add it as soon as we get to the bottom of why your arcs look backwards.

Offline Dan13

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #28 on: November 28, 2010, 03:46:34 AM »
Wes,

Yes, appears my arcs where set to absolute rather than incremental. Don't know how it was not affecting any of the other programs I was running. Changing it back to incremental fixed it :)

Most industrial lathes only use the T word for a tool change. This is how Fanuc works and this is why Mach3 was changed.

Dan

Offline DaOne

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Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS
« Reply #29 on: November 28, 2010, 03:48:55 AM »
Dan, what version of mach are you using? I am wondering if you need a "I0." added in the mix. Most interpreters treat a missing "I" as a "I0." I wish I could find more documentation on how mach uses specific gcodes. Arcs always seam to give the most issues.