Axis substitution on a table table vertical 5 axis

[westerfieldc]

Good morning all,

I have asked his question and I think the answer was I couldn't do it, so I'm going to ask again to see if the file I upload nd my questions is easier to understand.  I have a table table 5 axis vertical that the part is too big in relation to the travels to have the cuter travel around the part in X and Y axis.  I want to use Axis Substitution to place the cutter somewhere in X and Y and have C axis rotate against the cutter.  I have tried a number if things to try to make this work but so far have not been able to produce the tool path wanted.  I have tried creating a straight line  equal to the circumference of the diameter and the tool path comes out wanting to move the A and C .  I'm hoping that my questions is clear enough and by providing a file you guys will be able to help.

 

Thanks,

Chris  

axis substitution.mcam

[Leon82]

When i did it i modified a 4 axis post with the correct z axis rotary orientation. i couldn't get it to stay on the left side which is what i needed, but it did work after some transform hacking. now i use camplete to do it and it works with TCP much better.

[westerfieldc]

I appreciate that, but I'm just trying to get it to show me the correct tool path.

 

Thanks,

Chris

[Leon82]

I couldn't get it to work with the five axis machine definition that's why I was saying that

[westerfieldc]

Ahh, I get what your saying.  I kind of think I was told before that it doesn't work, I was just hoping that things had changed since then.

[Leon82]

I would recommend programming quadrants with 4 work offsets. Probe or indicate each zero.

I had a similar part and when I went to do a final skim I used the set angle lock in Camplete. 3 120 degree positions. Basically the same as 3 work offsets

[MrFish]

This is how i did it a while back, was a head table machine but don't see that being an issue if there is a rotating table. Used the morph tool path to get the motion I wanted and saved it out at back plot then used the geometry in a contour tool path with axis sub locked to 3 axis with rotate about Z axis, Doesn't make a lot of sense with 3 axis selection but worked with our post. Have also cut a tapered wall with the table spinning by using a multi axis path and locking the tilt axis relative to Z in the tool axis control, this makes the table turn. Possibly another way to attack it if the above method doesn't work with your post.

 

[GoetzInd]

We do this with the method MrFish is showing above. I imagine there is some post config stuff that needs to be done. We are also using TCP so that's nice too.

Mike