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601  Third party software and hardware support forums. / LazyTurn / Re: Inscribed circle, what am I missing? on: December 03, 2010, 01:46:33 AM
Hi Rich,

I don't think I understand your point about insert tolerances. Define it whatever you define in LT, in the end it all comes down to touching off the bar and measuring the diameter. Furthermore, for discussion purpose, the insert tolerances are much better than what you mentioned. It is in the range of 0.01mm (0.0004") for the critical dimensions.

Dan
602  Mach Discussion / General Mach Discussion / Re: What would make the size of holes change during cutting???? on: December 02, 2010, 09:35:57 AM
Hi Lulu,

It does the same thing no matter where you place the work on the table...? Can you post the Gcode?

Dan
603  Mach Discussion / VB and the development of wizards / Re: key cutting on: December 02, 2010, 09:34:05 AM
Hi Ar,

Very interesting! Nice application. Thank for sharing!

What is it mostly used for - reproduction of existing keys or producing new ones?

Dan

604  Third party software and hardware support forums. / LazyTurn / Re: Inscribed circle, what am I missing? on: December 02, 2010, 09:19:01 AM
Hi Jim,

Tool inserts are defined by the inscribed circle. i.e. the circle inside the insert and tangent to all its sides. From your description I think you were defining a circumscribing circle.

Dan
605  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 30, 2010, 03:35:15 PM
Sorry Wes, it was my bad about the Z values. They are fine.

It looks like in diameter mode the K word should be half the radius. See the code I posted in reply #23. Here are the last few lines:

(Finish Passes)
G1 X15 F0.05
G3 X15 Z-25 K-5
G0 Z-15
(Spring Pass)
G1 X15 F0.05
G3 X15 Z-25 K-5
G0 X16.5
G0 Z0.5
M5
M30

When is diameter mode, the last G3 move takes the cutter to the extreme X5, while the X end is defined as 10. Sorry for being unable to explain it better. Hope you follow me. Just change between the modes and run the code. You will see where the DROs go. Also load the OD Arc3 wizard and see how the arc movements are affected by changing the mode. I didn't try to understand the math behind it, but for some reason, in diameter mode the 'I' word adds up. In radius mode it's zero.

Dan
606  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 30, 2010, 09:57:32 AM
Hi Wes,

Had a chance to cut some material today. The wizard doesn't work when in Diameter mode. The cutter plunged deep into the stock. Changed to Radius mode and changed the X values in the wizard accordingly and it worked fine.

The Z start and end are still swapped.

Dan
607  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 29, 2010, 01:56:38 AM
Hi Wes,

I am in diameter. Are you saying that it will always do moves of half a circle? If so then the tool path was misleading - I saw it doing half circles and thought I will get the half circle in the part, but it appears to me now that part of the move will cut air. Will try to cut some material and see how it works.

Dan
608  General CNC Chat / Show"N"Tell ( Your Machines) / Re: X machine-Like on: November 28, 2010, 11:18:18 AM
Hi Amir,

Glad to see your machine is finished. And the part looks beautiful.

Dan
609  Mach Discussion / Works in progress / Re: 3 PAGE LATHE SCREEN - WIZARD ADDITIONS on: November 28, 2010, 05:33:01 AM
Just tried to cut air. The tool would dive right into the stock, following the arc. Needs a few roughing passes based on the X start and final X. May be the rough passes should be G1 and only a few last passes would be G3.

The Z start and end are still swapped.

Also, the X start and X end don't seem to be defined correctly. X start should be the initial stock diameter. X end should be how deep you want the arc in the workpiece, i.e. not always would you want half a circle (this is what the current code keep doing).

Dan
610  General CNC Chat / Show"N"Tell ( Your Machines) / Re: The Laser Project. on: November 28, 2010, 05:04:20 AM
Thanks Tweakie.

Dan
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