surfacing and multiaxis

[Brandon Walker]

I was just playing around on one of the many multiaxis tutorial files i had around, just trying to see different ways i could do things. its the one with the dome shape and mastercam engraved on it horizontally on the dome, and cad cam engraved vertically across it. I figured a way to face away a lot of excess material before surfacing the dome shape. using the tilt/rotary to position the stock then face away material at 45 degree angles.

 

now my question is:

 

how can i keep the tool in the surfacing op from extending past the remaining stock so that it does not cut air half the time?

 

if noone understands my question, ill post my file on the ftp on monday.

 

thanks

[Guest]

morning 4X4 ..let us know what the file is when you get your coffee in ya

[Brandon Walker]

lol well i forgot my pw already for the ftp and its gettin to the end of the day. so i guess ill have to fire it up there tommorow (sorry i forgot monday was a holiday)

[Jack Neelands™]

np ...we can wait

lol

[Brandon Walker]

ftp://www.ppcadcam.com/Mastercam_forum/Tr...iles/5axis1.zip

 

 

theres a few things that i was tinkering with, but the only thing i wanted to know about was keeping the tool in the material. i can do it n gibbs so mastercam must have a way of doing it too.

[Jack Neelands™]

i thought i might try something that im going to use called rest mill...your face mill had 4 planes on it and i created surfaces from that...with the leftover sides and made it into a pyrimid box

 

 

 

i then toolpathed that with a ramped surface contour

 

 

 

 

and used that as a (reference only) for the rest mill and it actually follows the material that was left over from the face mill

 

 

 

 

took me a while to think it out but tis doable...i have put it back on the website in the ftp X folder under 4X4rest.MCX...you may want to tweak it