Offset Turning with Turret Lathe

[Greg Williams]

Hi All,

 

I while back there was a thread on Crankshaft turning on a Turret lathe.

 

The offset turning is about 3mins in

 

[ 04-27-2010, 12:17 AM: Message edited by: Greg Williams ]

[Goldorak]

nice , how did you program that part???

 

is there an option on the OSP control ???

 

i was always thinking of cutting eccentric part like this instead of using a jig or a 4 jaw chuck

[Greg Williams]

Martin,

 

You will need super-nurbs and a P200 control to get a round part at that speed. You could give it a test at a lower speed, Let us know how it go's

 

Below is the macro that I used,

 

OCALL

 

T020202

M110

G131

M808

VTWOX[2]=9

 

NLP1

VTWOX[2]=VTWOX[2]-3

 

ZZ1=0

PTC=0.1

G94 M146

G00 X400 Z0

G138

G0 X400

 

FF1=95000 (DEGREES PM)

XX1=111.5/2

 

G17

G0 Y0 C0

X=XX1

 

NLOOP

ZZ1=ZZ1-PTC

M15

G01 C180 X=XX1 Z=ZZ1 F=FF1

ZZ1=ZZ1-PTC

G01 C0 X=XX1-6 Z=ZZ1 F=FF1

IF [ZZ1 GT -13] NLOOP

IF [VTWOX[2] GT 0] NLP1

 

G00 X400

G0 Y0 C0

 

G130

G136

G00 X400

M109

RTS

[Goldorak]

cool thanks Greg

 

im not sure for the supernurbs on our L370MW but it got the p200 control

[88Matt]

Good job Greg. Impressive.

[Greg Williams]

Martin,

 

Super nurbs is the high speed machining function.

 

I would suggest changing the feedrate to ~50RPM so F=50*360 and see what you get

 

Also I would suggest using X shift variable VZSHX to take the depth cuts not the tool wear offset VTWOX[?] as M02 and the reset button will cancel the X shift but not the wear offset - Much safer

 

Let us know how it go's

[Goldorak]

i will try this week

 

im also thinking of using the G137 (y axis simulation) and use a milling ramp contour

 

my multipass will be my DOC and my ramp pitch will be me IPR

 

i will simply use a tunning holder like it was a C-axis m-tool

 

i just need to find a way to set my m-tool rpm at 0

[Joe788]

Greg, is this one an Okuma too? Looks violent!

 

http://www.youtube.com/watch?v=7VQRJMiX2mE

[Greg Williams]

Martin

 

M808 - Spindle interlock off

[Greg Williams]

Joe,

 

Yes that is an Okuma CAM lathe. Preety cool eh.

[Kyle Waters]

The link is gone, anyone have any info on that machine?

[Kyle Waters]

oh, and nice work Greg!

[Joe788]

I wonder why the Okuma CAM lathe video was removed? Is it something top secret that isn't supposed to be on Youtube? I'm assuming the fact that it was removed two days after I linked to it, was NOT a coincidence?

[Kyle Waters]

I know you definitely had my interest. Hopefully someone has some info.

[Greg Williams]

Whoops that was me I will upload it again

 

http://www.youtube.com/watch?v=ErQvBDzOUCY

[Kyle Waters]

Greg,

That ROCKS!

 

Is that an LU?

I assume with a P200 and what other goodies to accomplish that?

[Joe788]

Greg, is that just the servo and ballscrew interpolating the X axis that fast? Or is there something more going on here?

[Greg Williams]

Kyle,

 

Yes this is an LU300-V1CAM there is a Special turret on the top

[Kyle Waters]

Thanks Greg,

Is it for sale in the US?

[Greg Williams]

Kyle,

 

I would think so as it has been on the market here and in Europe for a few years now

[Bruce Caulley]

Resurecting an old thread here.

 

Has anyone here done this on a Mazak control? We have a Y-axis quickturn and an Integrex E-420 that we would like to try it out on.

 

Thanks

 

Bruce

[Greg Williams]

[Joe788]

Resurecting an old thread here.

 

Has anyone here done this on a Mazak control? We have a Y-axis quickturn and an Integrex E-420 that we would like to try it out on.

 

Thanks

 

Bruce

 

I haven't done it, but here's a regular Integrex with a compound Y axis doing it. Should work a even better on an e420 with that orthogonal y axis.

 

[Bruce Caulley]

 

 

[chip]

Cool part Greg.