Mitsubishi 4 Axis Wire

[edmBosto]

Del,

Yes I do.

[Guest]

i was just wondering,because i've seen where i have to sometimes square the wire to the part and the u and v is not zeroed out,it will try to go back to u0 v0.i thought maybe this was why it was throwing your numbers off.

[savagkd]

edmBosto, Have you run the wire allignment and taper Z?

[edmBosto]

Savag,

I did a wire alignment Wed. afternoon but not the Taper Z. I was just looking at that in the book since I had seen your post. Since this is new to me I will study this a bit. I'll be back at ya with a question most likely.

[savagkd]

Any luck?

[edmBosto]

Not yet.

I had to get some other machines going and do some maintenence on the Fanucs. Thanks for inquiring. I still have the book open though!

[edmBosto]

To the Mit. users; (Lars and Savag?)

 

I've been glancing at the book a little and now I've got a question.

 

If I am using "A" as the angle say -.25 in the nc code and the the part thickness is .814, The dia. at the .814 level is the chained dia. and the hole is larger at table level. (About .00355/S. in this scenerio)

 

Question:

Is this the way the Z1 to Z5 should look on the screen?

Z1= .814

Z2= .407

Z3= 0 (Since using A Value)

Z4= 0 (Since using A Value)

Z5= 0

 

Or do I need to perform the taper Z to set the constants for H91 and H92 so there is a value there?

 

thanks for looking at this.

Vern

[Lars Christensen]

edmBosto,

You are on the right track here, except that TaperZ is a important pieces to the puzzle. TaperZ is the feature that calculate the distance from the table to your lower and upper guide, the machine will need this distance to be able to calculate the correct angular. I will normally do a TaperZ in the angular I have to cut, if it has to be accurate, you can make a TaperZ in 5 deg. then 10 deg. and lastly 15 deg. and take a average. You will see your H91 and H92 change depending on your test angular, and then after I write it down on a yellow sticky note and hang it on the control, that way you have it handy and can use it as cross reference when you do your next TaperZ, or you have to use them for a angular start up. So if you do not know when this was done the last time, do it!!.

 

You are correct in the way you have set your Z1 and your Z5, however having Z3 and Z4 as zero in there will make your H91 and H92 zero, so you do not want those in there.

One thing to consider is to reverse your scenario and have your Z1=0. and your Z5=.814 this will result you "A" value to be positive, to do this is not always possible but the benefits are that you program to the diameter that matters, and have you error of the taper away from you geometry (machine is going to be most accurate at the table that up in the air, because you are close to your lower guide), second is that it can be rather a pain in the butt to get the slug out of there if the taper is getting bigger at the bottom, because of the lower head .Your scenario is only .0035/S so if you use .01 diameter wire you will have a .01 path + overburn (.014) and you will be able to get the slug out from the top, but it is just something to have in mind.

 

I hope this makes sense, and maybe Savagkd can chime in if I am missing something, I have not been programing wire for some few years now, and I feel a little rusty.

 

Lars

[edmBosto]

Lars,

It seems to me you still got it. OOH ya

 

When I do the taper Z the H91, H92 will be set automatically then?

I'll write them down for ref. and everything should add up for the Z3 value then.

 

Once I do this and get a correct taper I'll probably look back and think that was so easy.

Everyones being a big help. Thanks.

[savagkd]

edmBosto,

Lars is right on the money. The only thing I can add, is the H91, H92 values will change every time you remove, replace, or change your diamond guides. Every time I touch a diamond guide, to change wire dia, or for cleaning, etc., the very next thing I do is wire allignment and taper Z. This habit will eliminate almost all taper errors. HTH

 

Keith

[deeherk]

for what it's worth...i know i am late with this, but one note to mention is..if you are doing a g41 or g42, you have to have your taper a plus or minus...that also goes with whether you are cutting at z1 or at z5..

herk

[edmBosto]

Update:

I'm back at this for awhile today.

I did a taper Z and recorded the #'s

Manually set my Z1 to part thickness + .015spacer)=.829

Manually set Z2 to (.407)

 

Started the program and Z1 changed to .689

and Z4 also had changed some.

 

I'm waiting for the results from machining now to see what happens to my -.25 Degrees/S..

[edmBosto]

The results were better but not right yet.

The part I mentioned of the Z1 and Z4 changing on me when I started the program has me baffled.

All I can think of is that it's a subprogram that

is changing it. Maybe in my case it's the 8221 EPack since that is in the program.

Does that make sense?

[Lars Christensen]

A Epack should not change your Z1 and Z4, I have no idea why these would change on you.

Can you post your code here or email it to me.

[deeherk]

lars is right about epack not changing things..

do you you still have a z command in your program that it might be reading??

dan

[edmBosto]

I took out the Z command. Originally it was Z.814

Your replies eliiminates the Epack thought.

Sure, I'll post some code in the morn.

Hey it's almost morn now. EST.

[Jerry_P]

OK let me get caught up here. You are running a 2 axis program with an angle in it. It has been an year since I programmed and ran Mits. They are right the Zs must be right but also I would break the circle into 4 quadrants. Did you mention how tall the block is or did I miss it. If it is taller than 3 or 4 inches you might want to do the wire align at the block height. do you have Manual Z head or CNC if it is CNC the Machine should set the Z3 automatically if it is not you need to set the Z3 at what ever you have the head set at. I can't remember how but the machine has a program to set the H91 and H92 you should not have to change them. Z2 and Z5 are not that important. The most important Zs are Z1, Z3 and Z4. I ran and programmed Mits for a lot of years. I used to run a SX10 and we could hold

+/- .0001 with out no trouble. So the machine can do it you just have to have it setup right. How many skims are you taking?

[Lars Christensen]

I will not be back til tommorow, but maybe this will help you on your way.

 

code:

---

%

(EDMBOSTO )

(DATE - 11-01-07 TIME - 09:24 )

(Machine: Mitsubishi FA)

(Programmer: Lars Christensen)

N100 G90

N102 Z1 = 0.81400

N104 Z2 = 0.40700

N110 Z5 = 0.00000

N112 G92 X0. Y0.

N114 G00 X0. Y0.

N116 M20

N118 M78

N120 M80 M82 M84

N122 E1231 F.120

N124 M90

N126 G88

N128 A-.25

N130 G01 G41 H1=0.00375 Y.15

N132 G03 X-.15 Y0. I0. J-.15

N134 X.15 I.15 J0.

N136 X0. Y.15 I-.15 J0.

N138 A0.

N140 G01 G40 Y.12

N142 E1232 F.200

N144 M90

N146 G88

N148 A.25

N150 G01 G42 H1=0.00275 Y.15

N152 G02 X.15 Y0. I0. J-.15

N154 X-.15 I-.15 J0.

N156 X0. Y.15 I.15 J0.

N158 A0.

N160 G01 G40 Y.12

N162 M21

N164 G00 X0. Y0.

N166 M02

%

---

[edmBosto]

Hi Jerry,

I'm running a FX10 Mit. with auto feeder and CNC Z. I did a rough and then 1 skim only.

The Z3 (after doing a mach. Z taper at 2.500 from upper cup to table)

was within .0004 of the .814 height of block +

.015 Shim + .7000 H91=1.529 for Z3 setting

The actual Z3 when I ran the program was 1.5286.

 

The Z1 and Z4 changed when I ran the program.

[edmBosto]

Lars, I'll look at your post more in a little.

 

I'm going to try 3 skims to see what happens here is my code: I changed the chained hole size to a .2600 dia.

%

L2113/

(01/11/07)

N100 G62 X0 Y0

N110 G97 X0

( 2D-TAPER )

N120 G70

N130 G90

N140 H66=.8140

N150 H67=.8140

N160 G22 L8221 H1

N170 H136=0

N180 G22 L8221 H300

N190 G92 X0. Y0.

N200 M20

N210 EH70 FH114

N220 M78 M78

N230 M80 M82 M84

N240 (PASS=2)

N250 (ROUGH)

N260 G41 H35 G1 Y-.13 A-.25 M90

N270 EH71 FH115

N280 G3 X.13 Y0. I0. J.13

N290 X0. Y.13 I-.13 J0.

N300 X-.13 Y0. I0. J-.13

N310 X0. Y-.13 I.13 J0.

N320 G40 G1 Y-.11 A0.

N330 G04 X5.0

N340 EH70 FH114

N350 (PASS=3)

N360 (SKIM #1)

N370 G41 H36 G1 Y-.13 A-.25

N380 EH72 FH116

N390 G3 X.13 Y0. I0. J.13

N400 X0. Y.13 I-.13 J0.

N410 X-.13 Y0. I0. J-.13

N420 X0. Y-.13 I.13 J0.

N430 G40 G1 Y-.11 A0.

N440 G04 X5.0

N450 EH70 FH114

N460 (PASS=4)

N470 (SKIM #2)

N480 G41 H36 G1 Y-.13 A-.25

N490 EH72 FH116

N500 G3 X.13 Y0. I0. J.13

N510 X0. Y.13 I-.13 J0.

N520 X-.13 Y0. I0. J-.13

N530 X0. Y-.13 I.13 J0.

N540 G40 G1 Y-.11 A0.

N550 G04 X5.0

N560 EH70 FH114

N570 (PASS=5)

N580 (SKIM #3)

N590 G41 H37 G1 Y-.13 A-.25

N600 EH73 FH117

N610 G3 X.13 Y0. I0. J.13

N620 X0. Y.13 I-.13 J0.

N630 X-.13 Y0. I0. J-.13

N640 X0. Y-.13 I.13 J0.

N650 G40 G1 Y-.11 A0.

N660 M91

N670 M85 M83 M81

N680 M58

N690 M21

N700 M58

N710 G23

N720 M02

%

[edmBosto]

I see Lars put Z1, Z2, & Z5 in the nc code

Humm!

 

That would force those settings in the mach.

yes? Then My Z1 and Z4 probably wouldn't change

once I started the program

Just thinkin'

[terry5357]

For the Z values to change there is some info in the program that does not need to be there. i ran and programmed Mit's for a fyear and a half and I never had any trouble with angles. Check your post output to see that there aren't any extra code that is makeing the machine do its on calculations. MIt's are nice machines and have their own programming code and the posted code and the Mits code don't play well together. Epacks are just buring parameters for different mat'ls and thickness', but I am sure you are already aware of that.

HTH

[edmBosto]

I think it's a setting in the subprog. 8221

 

Those are factory set.

Whatdoya thinky?

 

Thank you

[deeherk]

ok guys,

this gave me a headache, but this is what we use for doing i.d work. i guess we don't let master cam put in our offsets, epacks, ect. cause it makes the program long..we use a main and sub..

we change the main for whatever cutting conditions we need and the sub is a variable program that all you have to change is the i.d you are using and the radius of the teardrop lead in that you want...

fot the part edmbosto was doing,i would have my z scale in the machine as follows:

Z1=0

Z2=.407

Z3=WHATEVER MACHINE COMPUTED

Z4=WHATEVER MACHINE COMPUTED

Z5=.814

 

the program would be for rough and 3 skims..

K rotation is so wire is going in and out at different places,not leaving any marks..

this program works for any i.d we have to cut,

with or without taper, and all we have to change is a few numbers,epacks,offsets,feedrates..then kickback and burn baby burn..must be the coffee talking now!!!!!

 

 

L1/ALTER-ID-MAIN

H1=.00910F.120E1231

G22L2

H1=.00710F.200E1232

G22L2K-90.

H1=.00570F.140E1233

G22L2K-180.

H1=.00530F.200E1234

G22L2K-270.

M85M83M81

M58

M21

M02

 

 

L2(ALTER ID-SUB)

H50=.300/2

H51=.030

M20

M78M78

M90

M80M82M84

G92X0Y0

G91

G42G01X-H51YH50-H51 A-.25

G02XH51YH51IH51J0

G02J-H50

M01

G02XH51Y-H51I0J-H51

G40G00Y-H50X-H51Y-H50+H51

M85M83M81

G23

[Kannon]

I dont think its the coffee...maybe that pipe you token on .

Actually..yes workin with the puffmaster, all he does is change I.D. size and let er go.

bout time you come out of your shell and get back on here.