Point to Point

[tiredtoolmaker]

I want to post to a Haas VF6 using point to point instead of circular interpolation. I'm looking at the post in Control Definition Mgr but don't see anything. Please let me know how to do this.

[crazy^millman]

Post is probably going to be your best place. Should be a linearize switch in the post. Might also get all canned cycles long code as well.

[Colin Gilchrist]

Look for the post block 'pmotion_su' in your post. There is a line of code near the top of the post block: "linarc$ = zero". Change it to "linarc$ = one". That will linearize all of the arcs. (Make sure you backup your post first!)

[Colin Gilchrist]

You can also add another line of code just below 'linarc$ = one'. This would be for setting the "break arc tolerance", which determines how many points you are outputting for each circle:

 

(put your cursor on the end of line, after the 'linarc$ = one', and press Enter. Then on a new line below, add "chord_tol$ = .001")

pmotion_su      #Motion Setup (Set brklinestype & linarc)
      brklinestype$ = zero
      linarc$ = one
      chord_tol$ = .001
      if rot_on_x,
        [
      .
      .
      .
      .

(I omitted some lines for clarity...)

 

Then post and see how many points you are getting. If you need more/less points, change the chord_tol$ value. (.0001, .0002, .003, ect.)

[tiredtoolmaker]

Maybe I wasn't clear in my request. I found under parameters/arc filter-tolerance/smoothing settings/present arcs as line segments. I selected this and still have (2) lines containing I's and J's. I don't understand why it didn't convert these two lines out of a 3000 line program.

[Myth Project]

My guess is your lead in lead out has an arc, which wouldn't be changed by that particular method of changing arc to points...

[tiredtoolmaker]

Thanks. I played with the parameters and was able to generate all lines to points only.

[jlw™]

Just curious but I want arcs. Is there a reason why you prefer segments?

 

You may get faceted surfaces from linear segments.

 

Just curious.

[Guest MTB Technical Services]

Just curious but I want arcs. Is there a reason why you prefer segments?

 

You may get faceted surfaces from linear segments.

 

Just curious.

 

 

Especially on a Haas.

The program will run much less smoothly.

There is a very limited amount of servo tuning you can do and the control itself is also a limiting factor.

 

I would love to see Haas add something like SIEMENS CIP Arc functionality as it would make 3d Machining much better on their platform.

While there is a lot to like about Haas, processing speed and HSM are not very good on any of their machines.

They simply weren't designed for it.

[Tinyfxds]

We have an older Quintax router that will not except 3d arcs "k" values are a no go with this machine.  In the process of turning off 3d arcs and what not I came across "present arcs as line segments"  and filtered as much as possible to try and create point to point moves.  This machine loves that stuff.  It hasn't ran better since I switched to line segments.

[tiredtoolmaker]

I was doing a repair job and needed to do some Z axis editing at various points while at the machine.