GENERIC HAAS VF-TR_SERIES 5X MILL POST SET-UP

[cncmillman]

Hello first time posting here. 

Long time Mastercam user however new to setting up for 5-axis use. We have a HAAS VF2 with a trunnion.

I'm using 2019 and just looking for 5-axis positioning, we don't have the full 5-axis software at this time. 

I've made a test program to see how this post is working. The indexing is correct if each operation is posted separate. If I post them together the 1st index is good the rest blows up with

1 deg indexes. (sorry these pics are huge)

I'm sure its a setting but I can seem to find it. 

Thanks for help ahead of time!

 

[ajmer]

open the pst file

look for this

brk_mv_head  : 1     #Break the 5 axis moves to remove gouge

and change to this

brk_mv_head  : 0     #Break the 5 axis moves to remove gouge

[Leon82]

I think in the machine definition there is a setting to break arks or rotations. Not sure if it will help

[Leon82]

On a side note you are going to want more contact area on that raptor

[cncmillman]

13 hours ago, ajmer said:

open the pst file

look for this

brk_mv_head  : 1     #Break the 5 axis moves to remove gouge

and change to this

brk_mv_head  : 0     #Break the 5 axis moves to remove gouge

ajmer thanks but that didn't do it 

I'm sure its some setting like.

[Guest]

Try setting this

 

brk_max_ang  : -40    #'brk_mv_head' maximum angle move, applied if chordal
                     #calculation angles moves are greater (negative disables)

[cncmillman]

13 hours ago, Leon82 said:

I think in the machine definition there is a setting to break arks or rotations. Not sure if it will help

Found it, but no dice.

Thanks for the input!

[Guest]

5 minutes ago, cncmillman said:

Found it, but no dice.

Thanks for the input!

Now I gotta ask if you're editing the right post?

I had the same exact issue, that change cleaned it up....

perhaps a z2g file and someone can get a look...

Edited July 27, 2018 by Guest

[gcode]

Modern 5X posts respect the Machine Definition for a lot of settings

On Properties page of the Rotary Axis there is a "Break Rotary Motion" check box

I would see if it's checked

[gcode]

This could also be caused by a toolpath

Depending on setting, the multiaxs linking toolpath will output code like this

and some of the ModuleWorks 5X paths give you the ability to output rapid motion like this

 

[Guest]

I received this from him...I had Daniel adjust his user settings...so he should be able to post again

Quote

brk_max_ang  : -40    #'brk_mv_head' maximum angle move, applied if chordal
                     #calculation angles moves are greater (negative disables)

Hello,

Apparently I'vs reached my maximum number of posts 

This fixed the problem thank you !!!

Now I have to figure out how to correct the indexing It cuts the top of the part at B0.  A0.

Cuts the side  at A90.  Then I get a A-90. to get to the other side but it needs to be B-90.

Thanks Again I was getting pretty frustrated I finally got a call from our Mcam rep but he still hasen't had time to look at the zip2go file I sent him.

 

Edited July 27, 2018 by Guest

[Guest]

I have requested a picture of the machine at A0 B0 

I am pretty sure, like most things HAAS they have it wrong and we have an AC machine but a pic will clarify

 

I am heading out shortly but I'm almost willing to bet ebven though HAAS calls it an AB machine, it's really an AC machine

if so....

These settings will get you

#Assign axis address
str_pri_axis : "C"
str_sec_axis : "A"
str_dum_axis : "B"

#Toolplane mapped to top angle position strings
str_n_a_axis : "A"
str_n_b_axis : "B"
str_n_c_axis : "C"

#Primary axis angle description (in machine base terms)
#With nutating (mtype 3-5) the nutating axis must be the XY plane
rotaxis1$ = vecy  #Zero
rotdir1$  = -vecx #Direction

#Secondary axis angle description (in machine base terms)
#With nutating (mtype 3-5) the nutating axis and this plane normal
#are aligned to calculate the secondary angle
rotaxis2$ = vecz  #Zero
rotdir2$  = vecy  #Direction

and IF you are using G254, for it to work properly, you MUST define it as an AC machine

 

This thread covers a great deal on it

https://www.emastercam.com/forums/topic/94603-haas-generic-5x-post-question/?do=findComment&comment=1157138

Edited July 27, 2018 by Guest

[cncmillman]

Thanks JParis for adjusting this for me!  

A rotates about X

B rotates about Y

[cncmillman]

[Guest]

Yup, AC

 

It tilts about the A and rotates about the C

 

If that platter was facing you in the 0,0 orientation, it would be an AB

Edited July 27, 2018 by Guest

[Colin Gilchrist]

Hello, 

Apparently I'vs reached my maximum number of posts  

This fixed the problem thank you !!! 

Now I have to figure out how to correct the indexing It cuts the top of the part at B0.  A0. 

Cuts the side  at A90.  Then I get a A-90. to get to the other side but it needs to be B-90. 

Thanks Again I was getting pretty frustrated I finally got a call from our Mcam rep but he still hasen't had time to look at the zip2go file I sent him. 

 

This Post Processor is based on the Generic Fanuc 5X Mill Post.

The Post has "controls" build into the Miscellaneous Integers, to help you, the Programmer, get the output you want. But, and this is important to understand; it is not "automatic" to get the output you want. You have to know how to use the Misc Values to control the Post, and get the output you desire.

To fix the A90 / A-90 issue, you should go into the Operation in Mastercam, and set the value of "Misc. Integer #10", to a value of 1 or 2. One of the values (1 or 2, I can't remember which), force the Post to "limit" the Secondary Axis (A), to temporarily restrict the travel range of that axis. So when the Post sees the "next Op", it tests the logic output, and then the Misc. Integer #10 is preventing the Trunnion from going to A-90. So there is a logic routine in the Post that says "Ok, we can't go negative on the A-Axis, so let's rotate "B" instead (C), so we can get to the position being commanded.

The other thing I will often do on a Haas VF-TR Post, is to set a more limited travel range, to prevent the Trunnion from flipping over, away from the operator.

I'll usually set the Positive limit to "120.", but set the Negative limit on the Secondary to "-80. or -45.". This prevents the Trunnion from rotating away from the operator, when the platter is kicked over at 90 degrees.

 

 

[cncmillman]

I want to thank all of you for this incredible support!!

This was my first post, and WOW!

I have learned a great deal, and you have given me the tools I need to get this working.

100% grateful for this forum and to those who keep it running.