Lathe OD Turning

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10 Aug 2010 23:47 - 17 Aug 2010 12:54 #3675 by BigJohnT
Lathe OD Turning was created by BigJohnT
This is my OD turning subroutine. You can tell it what the roughing parameters are and the finish parameters. Used with Dewey's TCL GUI it is a one button turning tool.

File Attachment:

File Name: od-0d422ac...a555.txt
File Size:1 KB


John
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Last edit: 17 Aug 2010 12:54 by BigJohnT.

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11 Aug 2010 12:05 #3694 by andypugh
Replied by andypugh on topic Re:OD Turning Subroutine
Can I suggest that I find it more convenient to start my (similar) routines from the current tool position, rather than have to measure the blank and type in that measurement?
It takes a bit of fiddling with a G92 and a G92.2 (it would be rather nice if EMC2 could copy the current xyzabcuvw to memory locations, though I guess the question of "when" would need to be addressed)

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11 Aug 2010 12:22 #3697 by BigJohnT
Replied by BigJohnT on topic Re:OD Turning Subroutine
Hi Andy,

I do basically the same thing but touch off the Z (only one needed) in the G54 coordinate system on my lathe and call that Z0 so no measuring is needed. Once that is done on one tool all the tools on my turret are set for X and Z offsets as I set the Z offset for each tool (without any G54 offset in effect) from the face of the spindle. In the future I plan on adding a flip down tool setter for Z as on occasion I could not reach the spindle face when I tried to add a tool to the turret while material is in the collet.

On my plasma I use G92 on every file. I jog over to the X Y start point and press run then one of the first lines are G92 X0 Y0 then near the end I use G92.1 to clear the offsets.

John

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11 Aug 2010 13:43 #3700 by andypugh
Replied by andypugh on topic Re:OD Turning Subroutine
I think I failed to explain what I meant.
With my lathe roughing subs I jog to where I want the operation to start and type in where I want it to end. I only use the G92 as a dodge to read the current tool position into the G-code.
This means that I can deal with different sizes of stock without having to actually measure anything.

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11 Aug 2010 15:16 #3704 by BigJohnT
Replied by BigJohnT on topic Re:OD Turning Subroutine
Andy,

Are you talking about the Z axis only? I'm more confused than before... it must be the English accent B)

John

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11 Aug 2010 15:35 #3705 by andypugh
Replied by andypugh on topic Re:OD Turning Subroutine
BigJohnT wrote:

. it must be the English accent B)



Let me try EMC-accented G-code then :-)

M66 E3 L00
#1 = #5399 (Finish X)
M66 E4 L00
#5 = #5399 (Finish Z )

G92 x0 z0 (store position)
g92.2
#14 = [#5211 * 2] (starting X)
#13 = #5213 (starting Z)
g92.1

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05 Oct 2010 10:31 #4521 by Rick G
Replied by Rick G on topic Re:OD Turning Subroutine
Hello John,

Has the file www.linuxcnc.org/www.linuxcnc.org/media/kunena/attachment...3ae267fd15d6a555.txt been moved or renamed? :unsure:

Rick G

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05 Oct 2010 12:16 - 05 Oct 2010 12:17 #4523 by hpopols
Replied by hpopols on topic Re:OD Turning Subroutine
Hello Rich,

Your address is bad (<br%20/>?!), you are looking for : www.linuxcnc.org/media/kunena/attachment...3ae267fd15d6a555.txt ?

Xavier
Last edit: 05 Oct 2010 12:17 by hpopols.

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05 Oct 2010 12:22 - 05 Oct 2010 12:24 #4524 by BigJohnT
Replied by BigJohnT on topic Re:OD Turning Subroutine
Hi Rick,

It seems to have vaporized into electron dust.

I'll have to upload it again... my network is off atm so it will be a bit later today before I can upload it again.

John
Last edit: 05 Oct 2010 12:24 by BigJohnT.

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05 Oct 2010 20:10 #4527 by BigJohnT
Replied by BigJohnT on topic Re:OD Turning Subroutine
Rick, here it is again.

John

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