4 axis wire problems

[TravisHancock]

I’m in a bit of a jam. I program a 4 axis wire burn in mastercam version 9.1 and cannot get the machine to burn what the cad data reflects. I’m trying to burn a 5 degree lifter pocket with no success. The results vary. I used an in computer trimming method, and the result was a four degree angle. I used in control trimming method and the result was a 6 degree angle. Also when I post the path using an in control trimming method a P1 value is placed at the end of the G41/G42 line. Can you please explain to me what this value represents? Also, which should be used Direct 4axis or 4axis taper method.

 

Machine used MAkino EU64

Control MGW-N

[Guest]

i am not familiar with the makino wire,but a p1

on a fanuc wire tells the wire to cut taper by

using t codes which represents the value of the angle.p11 is 4 axis.look at your geometry from the

side view and anylyze your angle.chain the thread

point and bottom geometry and then the top geometry only.pick the same chain point for each contour,by breaking the top and bottom geometry at the same point.make sure that you have synced

the wirepath by entity if you have the same number of entities in the top and bottom.if not the you need to create branch lines to connect the top and bottom and sync by branch.4 axis taper

will break arcs into multiple lines and won't be as smooth on those contours.4 axis direct will

will post out a complete arc and will be better.

 

hope this helps

 

del

[Guest]

i am not familiar with the makino wire,but a p1

on a fanuc wire tells the wire to cut taper by

using t codes which represents the value of the angle.p11 is 4 axis.look at your geometry from the

side view and anylyze your angle.chain the thread

point and bottom geometry and then the top geometry only.pick the same chain point for each contour,by breaking the top and bottom geometry at the same point.make sure that you have synced

the wirepath by entity if you have the same number of entities in the top and bottom.if not the you need to create branch lines to connect the top and bottom and sync by branch.4 axis taper

will break arcs into multiple lines and won't be as smooth on those contours.4 axis direct will

will post out a complete arc and will be better.

 

hope this helps

 

del

[Roger Martin from CNC Software]

Travis,

 

On modern EDM eqipment, you almost always use Trimming in Control.

Of course you must setup the Z guide settings on the machine properly to get the desired results.

 

quote:

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Also when I post the path using an in control trimming method a P1 value is placed at the end of the G41/G42 line.

---

Does just the setting of the trimming method result in the 'P1' being output?

Curious. Anyway, it's the post processor doing this. BTW, what PST are you using?

quote:

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Can you please explain to me what this value represents?

---

Sound like it is an offset register of some type.

(I don't recall right now exactly what the 'P' is on a Makino. On some machines 'P0' = no taper, 'P1'=taper on, 'P11'=4-axis mode on).

quote:

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Also, which should be used Direct 4axis or 4axis taper method.

---

It depends. Every 4-axis can be done in 4-axis Taper mode. What can be done in 4-axis Direct depends on the mcahine/control and the shape of the part. (Meaning the geometry you have to work wiith).

[TravisHancock]

Roger,

 

can you explain more about setting the z guide setting on the machine properly. I am not quite sure what post i am using i think MPW/Makino(this is how it is labeled).

quote:

 

Does just the setting of the trimming method result in the 'P1' being output?

 

The p1 value is only placed in the post when i use the in control trimming method.

Thank you for your help.

[savagkd]

Travis,

 

Welcome! I'm not sure on the Makino, but on my Mits the Z guide settings are set for you when you run the wire allignment and taper Z. They are the Z1-Z5 settings. Can you post your file to the FTP so I can take a look at it?

 

Keith

[HevyMetl]

Travis I have the instructions from Makino for doing this. I can also tell you to ignore the values in Mastercam as far as depths go. Drop me an e-mail and I will be glad to send you the information on it. You need the P1 with the makino to tell basically how to read the UV data.

 

HTH

[HevyMetl]

Travis you have mail

[HevyMetl]

I have looked at some of my older programs since I only cut taper about 1 time a year. I use in computer for triming, and 4 axis direct. I usually sync by branch for what I do. I set my linearization tolerance to .00001 since the Makino won't cut an G2 or G3 in 4 axis mode. I use the depth values that come out automatically. At the wire control set your progam and sub plane data on the set data page. You get this from your part data. The guide is the calculation I gave you on the word document.

 

HTH

[Roger Martin from CNC Software]

Just to clarify for anyone reading this...

quote:

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I use in computer for triming,…

---

Trimming in computer with the XY Trim plane = XY Height and UV Trim plane = UV Height is pretty much equivalent to Trimming in control.

quote:

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and 4 axis direct. I set my linearization tolerance to .00001 since the Makino

won't cut an G2 or G3 in 4 axis mode

.

---

If your machine cannot do G2’s & G3’s in 4-axis mode, use 4-axis taper.

What ‘Direct’ is for is to give you arc moves when possible.

[HevyMetl]

Thanks Roger,

 

I will sock that away for the next time.

[TravisHancock]

This was my first time wire burning in 4 axis. Thanks for all the help everyone. I ran a program on a practice hole and everything came out great. Couldnt have done it without your help. Thanks again.

 

Travis Hancock