I love multi axis machining. And i also love doing more with less. Could you guys do a video showcasing of G112 /G12.1? I've made some simple but fun milling parts including a miniature version of my milling exam part in grade 5 titanium on a 2 axis lynx 220lm . I am certainly no expert in Polar Coordinate Interpolation machining. So i think you guys can take it way further than i can.
I don't have one on the titanium programming but the aluminum has a 6 hour Mastercam tutorial on our Academy. All the finishing was done the exact same way except on the aluminum I did a zigzag strategy and on the titanium I made all the passes climb cut so the finish would be better. Some of the roughing changed but that was mainly because my endmill was shorter on the titanium than it was on the aluminum. hope this helps.
The part is not in the center of the table. I placed the vise eyeball to the center of the table and eyeballed the part in the vise. It's not off a lot but it's not on center either. That is the beauty of using TCPC and tilted work plane, I can put the part and work offset anywhere I want on the table and the machine will compensate for me. If you program from center of rotation then you absolutely would need the part to be dead-on in the center of the table.
can you please upload a less-cut version of the actual milling? the explanation was fine, but cramping everything including the action part was to much to squeeze into 8min... that would be at least a bit more satisfying then a facemill doing a circle clockwise/anticlockwise shallow path on a flat steel part... 😉
I’m curious why the part is rotating off the center axis on the machine and in CAM? Was it just so you don’t have to center the part in the vice precisely? And how does that programming/probing work flow work?
When I first started 5 axis machining is when I first started using shrink fit holders. At that time I thought everything needed to be shrink fit as they are so convenient. That is not good practice though. Since then, for milling I have learned to only use shrink fit when necessary. The biggest benefit of shrink fit is the smaller nose diameters so they are amazing for hard to reach places. But like you said, you lose dampening properties with them so you run a higher risk of chattering and deflection. They are great for drilling because they have great runout and you aren't putting any radial forces with a drill. But for milling, limit them to only when you need them for tight or hard to reach places. Hydraulic has become my favorite all around holder because they have great holding force, great dampening properties, and great runout. But they are bulky so you can't fit them everywhere on a 5 axis. hope this helps.
On our Academy the tutorial to learn to program this part is 6 hours. we go through the whole thing with detailed explanation. In reality, it took longer than that because there is the time it takes to select tools, find correct processes etc. But it all depends on what level of finish you are trying to achieve in the end. That will make the biggest impact on programming.
