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Stepper drive for a Lathe Cross Slide. Issue No.246

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Victor Higgins 111/09/2016 10:51:18
3 forum posts

Under the heading , The Electronic Lead Screw X Axis: It states that the Z is parallel to the axis of the lathe spindle, the same as on a mill, and X runs at right angles to the axis of the lathe spindle. i.e. the cross slide. Is correct?

Martin Connelly11/09/2016 13:22:05
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2549 forum posts
235 photos

Yes, z axis positive direction is away from the chuck. X axis positive is towards the operator for a front tool post.

Martin

Neil Wyatt11/09/2016 23:38:46
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Think of lying your mill on its back, so the column (z) becomes like the bed of the lathe.

Michael Gilligan12/09/2016 00:24:09
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23121 forum posts
1360 photos

... and if you want to control movement in the Y axis, you need a vertical slide.

MichaelG.

John Stevenson12/09/2016 00:28:18
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5068 forum posts
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Posted by Michael Gilligan on 12/09/2016 00:24:09:

... and if you want to control movement in the Y axis, you need a vertical slide.

MichaelG.

Lathe has X, Z, A and C

Michael Gilligan12/09/2016 00:49:58
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John,

I was referencing Neil's analogy.

MichaelG.

not done it yet12/09/2016 06:01:36
7517 forum posts
20 photos

Ooh-er! I'm in trouble, my 2 axis dro for my lathe only has x and y axes.

Anyone seen a 2 axis dro with z axis plus one other?

Michael Gilligan12/09/2016 07:47:16
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23121 forum posts
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Posted by not done it yet on 12/09/2016 06:01:36:

Ooh-er! I'm in trouble, my 2 axis dro for my lathe only has x and y axes.

.

Various reasonably priced solutions are available:

Sticky Labels; Marker Pen; etc. devil

MichaelG.

.

P.S. ... Yuriy has it sussed

http://www.yuriystoys.com/2014/01/touchdro-coordinate-system.html

Edited By Michael Gilligan on 12/09/2016 07:54:47

Mike Poole12/09/2016 09:43:34
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3676 forum posts
82 photos

Lucky we are not robots having to calculate the tool path in multiple coordinate systems, back in the 80s this challenged the computing power of a robot and could have some odd effects.

Mike

John Stevenson12/09/2016 11:01:29
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5068 forum posts
3 photos
Posted by not done it yet on 12/09/2016 06:01:36:

Ooh-er! I'm in trouble, my 2 axis dro for my lathe only has x and y axes.

Anyone seen a 2 axis dro with z axis plus one other?

.

.

And to muddy the waters even further when you swap from Absolute to Incremental the X, Y, Z changes to U, V, W

wink

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