Fanuc Wire W1 Taper Cutting

[Krispee]

Hi all.
Looking for some help machining an internal tapered gear using a Fanuc W1 EDM.
I have managed to create a program using AutoCAD just tracking the points of the gear, using G90 (absolute) coding and then tracking the difference between the top and bottom forms using V and U.
A sample of that: Y.4635 X.0196 V.146 U.0062
4 lines to describe the gear tooth on a sub-program and then use an M98 and Q figure to duplicate. It worked, the graph shows both the top and bottom forms properly and the length.

Then I come to setup the taper cutting on the machine. I have never taper cut before so am learning from the ground up and using the manual. But the manual is a translation from the Japanese so it doesn't exactly work grammatically.

I need some information on how to setup the taper screen (Set/Taper) where you change the taper cutting data. (I tried to change to simple taper cutting but it only came up with a 40 alarm)
What cutting mode do I use for instance? Is it just 1 for taper cutting or 10 for direct instruction of the UV axis?
Do I need to use G51/2 if I'm using an NC style of program?
Any other things I might need to know?
I can post some images if needed or if anything isn't clear.

Any information you can spare or suggest would be really appreciated.
Thanks
Chris.

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[Krispee]

If you are using an M98 with Q then you should be using a G91(incremental)
Also on the Taper Page the mode should be 11 and you should not use a
G51/G52.
Also the correct syntax is G01 X.4635 Y.0196 U.0062 V.146;
The main program should look something like

O0001;
G90G92X0Y0U0V0I1.5J0.0; (main is in absolute, I is thickness J is programmed plane)
G41 G01 X Y ;
M98 P0002 Q R ;
M30;

Subprogram
O0002;
G91 G01 X.4635 Y.0196 U.0062 V.146;
G01 x y u v ;
m99;

Someone posted the above answer so thought I'd pass on my results and findings.


Right, I just tried your version and it displayed something pretty weird on the graph. So I fiddled with it a little and came up with this.

The Main:
O0050
G90 G92 X0. Y0. U0. V0. I2.5 J0.
S39
M81
M82
M83
M84
G1 G42 D4 Y.2
Y.4635 V.146
M98 P204 Q-16.364 L22
G0 G40 G90 X0 Y0 U0 V0
M30

The Sub:
G1 Y X V U
Y X V U
Y X V U
Y X V U
M99

I didn't bother writing in the actual figures in the sub, you get the picture. If I used a G91 in the sub it freaked as before. Also I used Cutting Mode = 10 in the Taper Screen. I tried using 11 earlier (with freaky results) so then tried 1 - although that ran ok I noticed the UV went back to zero every time it machined a tooth. To get it to seamlessly machine all the teeth in one sweep only 10 would work.
I have conducted a dry run, and it all looked good.

Thought I'd post that in case anyone else was taper cutting on a Fanuc Wire. Also thanks again for your help, wouldn't have there without you.