Generic Haas 5-axis secondary axis repositioning

[metalcutterjb]

This is the off-the shelf Haas post and I have a TR160-Y Trunnion.

The post outputs what I consider an unnecessary move that resets and repositions the "A" (secondary axis) to zero at null toolchange, when just a "B" axis rotation would suffice to position for the next operation. Is there a switch I am missing or a quick post fix that will prevent this move?

Example:

 

X-1.0769 Y-1.1136 Z2.4368 B211.388 A-79.793 F999.99

G94 X-1.1767 Y-1.1189 F50.

G0 Z2.4868

Z5.

X3.1739

A0. ****Don't need or want this****

B148.612 A-79.793

X-1.1767 Y1.1192

Z3.4368

[crazy^millman]

Call the folks over at Sierra I am sure they will be glad to help one of their customers. You can do a search in the post section of the forum and see what is posted there.

 

Have you done any thing with the mi variables to see what the different settings are giving you?

[metalcutterjb]

I have done a search and haven't found anything yet. It doesn't seem that any of the mi's address it either.

[metalcutterjb]

I have done a search and haven't found anything yet. It doesn't seem that any of the mi's address it either.

[metalcutterjb]

Well after much consternation, I finally figured it out (sort of). For some reason enabling a retract to a value "Z home position", in Home/Ref Points, also forces a return to "A0" on the next line. This happens on both "Transform Rotate" or when another operation follows that selects rotated geometry. Haven't figured that out in the post yet but will just have to avoid using a safe move that way.

[crazy^millman]

What did your dealer say when you called them about it?

[metalcutterjb]

I haven't yet. I guess I could try, but I haven't known dealers to give up much when it comes to posts so I always try to figure it out on my own or through forum searches.

[crazy^millman]

Well I work directly with a lot of dealers and find the exact opposite happen sometimes. Where people complain and get vocal about dealer not helping them yet in 5 years they have never once picked up the phone or even sent an email in asking for help. Jack and the group over at Sierra are good people and care to help. The HAAS post is a CNC OEM post and I would follow the process of contacting my dealer if they give you the response you are not looking for then take that response and shoot it to post(at)mastercam(dot)com and see if they can help you address the issue you you fighting. I am not trying to be confrontational here just trying to point you in the right direction. Glad to help anyway I can and thing is I cannot duplicate your issue and you did not put a sample file to test it with as to better help you. I do not know the type of operation, I do not know if it is the Generic Post with no modifications or with modification. I know on the post the mi8 is the Retract toolchange [0=Off, 1=Null, 2=Tlchg, 3=Both, NEG/4=Chain] and since you said this had no effect not sure what more can be done unless you share more stuff to help you. I like others are trying to help, but the dealers get maintenance money to be the 1st line of help. Again glad to help, but how much can someone do with the limited information that has been provided?

[metalcutterjb]

I do appreciate your assistance. You are right I realize I didn't share a lot of information. I haven't posted in the forum that much and I was unaware that one could send a file on the forum. How do you do that?

I sent to your email a Z2G file with a simple curve 5-axis that I am testing. Basically, I have not done 5-axis programming since V9 (2006) and am trying to re-acquaint myself with it since we just purchased a VF-4 with a TR-160Y trunnion.

I have done a lot of post mods over the years but the one I have is basically the OEM with a few mods not related to 5-axis with the exception of the Y axis trunnion configuration.

 

You will find if you put anything in Z in the Ref/Home, it adds the A0 move on the next line. It does it also with the OEM version- no mods. I tried it without the transform toolpath and just added another op with rotated geometry. (It doesn't do it when you keep all the geometry within the same operation). I looked high and low through the post and cannot find anything that would cause that, but I may have missed it. Could not find a misc real or int that seems to affect it.

Thank you for your help.

[crazy^millman]

I got your file and you have mail. It is in the locked part of the post as I suspected and will need to be addressed by the post department at CNC. Please review the email and Video and please feel free to send it along to the dealer as it should help them pinpoint what is going on. Sorry I could not be of more assistance.

 

Have A Merry Christmas.

[metalcutterjb]

Thanks a bunch Ron!