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5axis machines - collision - 4th + 5th axis initial range/limits

Phenom
Phenom

Hello guys,

 

maybe you ve never faced such problem but some action in rotary limits is quite important.

I want to share quite serious issue of reality.

 

So see attached part with variable contour operation.

5ax machine BC,

Doesnt matter kinematics but for example:

B is 45 degree head with range (0,+180) or (-7,+180) or (-30,+180), but doesnt matter the range.

Snímka.JPG

Or orthogonal kinematics with B limits -90,+30, but doesnt matter the range.

 

I just want from you - show me please your nc code from attached part with mentioned kinematics above.

I am pretty sure that there will be collision.

I clarify it later. See comments.

 

 thank you

 

 

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#♫ PB, 5ax, itnc, nx, vericut ♫ #
3 REPLIES

Re: 5axis machines - 4th axis range

Valued Contributor
Valued Contributor

No collision for me.

 

test.png

Re: 5axis machines - 4th axis range

Phenom
Phenom

Hello,

first, thank you for your answer.

 

-------------------------

little zoom:

N..B0 C0 (now system doesnt know that better position of C is 90)

.

.

(now it is facing the limits, so it rotates C that B was able to rotate too)

N57 B0.008 C89.999..

 --------------

N57 is tiny move (sometimes can be bigger) but definitely it is a collision ( with wall and tool tip as well).

C is rotating to let say 90 and also B is moving since start of this move.

I think this normal to get collision and collison must be there.

---------------

See lighter area between dots (sorry for quality)

bb.jpg

-------------------

In case bellow, there is bigger jump - bigger collision -from B0C0 to B65,53 C65,5 (!!)

(model without blends)

Snímka.JPG

Snímka.JPG

-----------------------------

You can test it on the real machine or in some nc code based simulation sw (again, small collision volume is difficult to see).

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#♫ PB, 5ax, itnc, nx, vericut ♫ #

Re: 5axis machines - 4th axis range

Valued Contributor
Valued Contributor

Seems possible with the sample sim09

 

(view in My Videos)

Glenn Balon
Production: NX 11.0.1.11 MP6 Primarily CAM

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Solution Information