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How to flip flip on an Okuma Lathe

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I am trying to setup a simple flip flip operation on my Okuma lathe. The part just needs faced and tapped on both ends. I don't want to run all the parts thru on one side and the come back and run the second side like I've been doing. I want to run one side and flip it and run the other. But I only know how to work the main Z Work Offset of the machine. I know this machine is capable of doing what I want to do but I don't know how to get there! When I am in the "Zero Set" page I Item down and found the *Screw Pitch Comp* page which appears to me to be a list of 12 possible work offsets?? Is that actually what that is? Or something totally different? How would I set a Z work offset for the second side of my part and what do I need to program to specify that work offset? 

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I'm super new to this Okuma and used to Fanuc control so I know this is probably super easy and right in front of my face but I don't know what it is.

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We have an old Takasawa that only has one work offset... Can always program the portion after the flip shifted in z by the amount you want to face from the second side, assuming you're using the same stop for both sides. Quick n dirty. Z0 doesn't always have to be the face of the part. Or program the first side shifted positive by stock to leave for post flip.

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don't mess with screw pitch comp.

what does your local okuma service outfit say?

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Word. Good call Edwood42. I knew this was an option but I just thought there for sure had to be a way to set a second offset. The machine is only 20 years old. Not nearly as old as the Mori Seiki lathe I have right next to it and its got separate work offsets. So I don't know. I guess I'll just go with that for now tho. 

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First side

Flip operation that you will ghost to prevent posting

M00  (you can hard code this line with a manual entry) 

G50G91Z-***amount of shift***  (you can hard code this line with a manual entry) 

G90  (you can hard code this line with a manual entry) 

2nd side 

M02 (will reset the shift amount )

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Or... have the following:

 

First Operation

M0 (Flip Part)

VZOFZ=VZOFZ-X (X Being the value you want to shift the zero set)

Second Operation

VZOFZ=VZOFZ+X (Shift Z Zero set back to original Zero set value)

M2

That is how I do it.

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11 hours ago, Mick said:

Or... have the following:

 

First Operation

M0 (Flip Part)

VZOFZ=VZOFZ-X (X Being the value you want to shift the zero set)

Second Operation

VZOFZ=VZOFZ+X (Shift Z Zero set back to original Zero set value)

M2

That is how I do it.

I do a pretty similar approach to this. I do have a spot in the program where it sets the absolute value for Z (VZOFZ=123.4567) as a safety, and then does the shifts after that. 

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I have used the Z shift codes on Okuma before, like VZSHZ (Positive Shift Value to move negative)  or this way.

(TOP OF PROGRAM)

V1=0

 

 

(MAIN PROGRAM)

 

 

M1

G91

G50 Z.125 (Z value as reference)

G90

V1=V1+1 (Z SHIFT COUNT)

V2=V2+1 (PART COUNT)

IF [V1 LE 5] GOTO N10

M2

 

( THIS WILL ALLOW THE MACHINE TO MAKE 6 PARTS AND SHIFT IN Z.125 FOR EACH PART.

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