UNIFIED MORPH HELP

[CNC CHRIS]

Trying to use Unified Morph, 

part will go on a 5th axis UMC 750

backplot shows me a clean toolpath, when trying to post it gives me a "large rotary move detected" warning. 

maybe morph is the wrong choice?

i have attached a simplified model. 

thanks in advance. 

 

UNIFIED MORPH.mcam

[#Rekd™]

This is likely due to a limit set in the post or in the misc integers

Look in the post for " lim_rot_inc". This could be set at 22.5 instead of 45.

Also you can try making this change as shown in the photo to see if that will help.

[CNC CHRIS]

i tried changing the value from 45 to 22.5 but no luck.

changed the setting you suggested as well, and no warning, 

not sure exactly what that does, but i will look into ti.

i appreciate your help

[Aaron Eberhard]

It's a problem that only exists when you post this.. It's called "singularity" when the spindle is perpendicular to the C axis.    Basically, because the BC is near 0, it calculates that from one side of the B axis to other it decides that it needs to rotate the C axis nearly 180°.

Most likely the transition before/after this move where it crosses B0C0:

There's a couple of strategies you can use to solve this, but the easiest way is to simply not let it get vertical.  If you limit the toolpath so it isn't allowed to go within, say, 5° of B0C0, you can just avoid the problem.
 

On the tool axis control page, turn on "Limits", then do something like this:

[CNC CHRIS]

10 hours ago, Aaron Eberhard said:

It's a problem that only exists when you post this.. It's called "singularity" when the spindle is perpendicular to the C axis.    Basically, because the BC is near 0, it calculates that from one side of the B axis to other it decides that it needs to rotate the C axis nearly 180°.

Most likely the transition before/after this move where it crosses B0C0:

There's a couple of strategies you can use to solve this, but the easiest way is to simply not let it get vertical.  If you limit the toolpath so it isn't allowed to go within, say, 5° of B0C0, you can just avoid the problem.
 

On the tool axis control page, turn on "Limits", then do something like this:

 

 

wow, i appreciat this info. that did the trick, 

i also learned that i can choose "4th axis" as my output format under tool axis control,

and on the 4th axis tab "lock at angle" give it an angle.

i was told no need to get too fancy.

 

[Aaron Eberhard]

21 minutes ago, CNC CHRIS said:

 

 

wow, i appreciat this info. that did the trick, 

i also learned that i can choose "4th axis" as my output format under tool axis control,

and on the 4th axis tab "lock at angle" give it an angle.

i was told no need to get too fancy.

 

#1 reason to use simultaneous 5 axis motion - It looks cool

#2 is because you have to use it so you don't hit things....

 

[CNC CHRIS]

2 minutes ago, Aaron Eberhard said:

#1 reason to use simultaneous 5 axis motion - It looks cool

#2 is because you have to use it to not hit things....

 

good to know. lol

now let me ask you this, 

is this the toolpath you would of chosen to finish those features?

just curious of how other programmers would accomplish this. 

[Aaron Eberhard]

4 hours ago, CNC CHRIS said:

good to know. lol

now let me ask you this, 

is this the toolpath you would of chosen to finish those features?

just curious of how other programmers would accomplish this. 

Absolutely.  Morph is like Frank's Red Hot.  I put that <stuff> on EEEVVEEERRRYYTHING.  

[huskermcdoogle]

On 4/7/2023 at 2:16 PM, Aaron Eberhard said:

I put that <stuff> on EEEVVEEERRRYYTHING.

Happy I'm not the only one 

I pretty much do all of my surfacing with morph or parallel strategies now.  Once I got to know how to manipulate them, I just don't want to use the standard 3D toolpaths anymore.  The only time I really do use the standard 3d paths now is when I need cleaner "filtered" code due to memory or control constraints, or I am helping a customer that doesn't have Multiaxis in Mastercam. 

[Aaron Eberhard]

16 hours ago, huskermcdoogle said:

Happy I'm not the only one 

I pretty much do all of my surfacing with morph or parallel strategies now.  Once I got to know how to manipulate them, I just don't want to use the standard 3D toolpaths anymore.  The only time I really do use the standard 3d paths now is when I need cleaner "filtered" code due to memory or control constraints, or I am helping a customer that doesn't have Multiaxis in Mastercam. 

Absolutely the same, my man It's just so much easier.

[So not a Guru]

On 4/11/2023 at 5:01 PM, huskermcdoogle said:

Happy I'm not the only one 

I pretty much do all of my surfacing with morph or parallel strategies now.  Once I got to know how to manipulate them, I just don't want to use the standard 3D toolpaths anymore.  The only time I really do use the standard 3d paths now is when I need cleaner "filtered" code due to memory or control constraints, or I am helping a customer that doesn't have Multiaxis in Mastercam. 

Thanks to several great tips & explanations from you, a few years ago, I too use these a whole lot. There's just no down side.