Wait, this was about being fast... Nobody said anything about accuracy!
The positional accuracy of these holes are bad, but not as bad as it looks in the video because of the burrs. In reality, we're talking +/- 0.005". Would I use this to do the air bleed holes on a turbine blade? No.
The application I am developing for is a customer who needs to add a grippy dimpled texture to a product. The original plan was to laser this texture in, but the laser time is way longer than originally expected, and the heat effected zone is making it impossible to anodize. If we can do the grip texture in-cycle, there is a huge cost savings to be had. +/- 0.005" is sloppy, but has a value in the low 6 figures annually. So this works, but we need to get the custom drills in to see what the finished product is like.
If I lift the clearance plane, I get most of the accuracy back at the cost of abut 2 seconds. If I turn on High Accuracy, I get to G00 transition accuracy, at a hit of about 12 seconds. G00 moves are so accurate because each G00 line (or transition to/from G00) has an exact stop check. On a hole transition, that is 4 exact stops, of which only 1 the move to the XY position) is really necessary. If it futz with my post, I'm thinking to throw a G09 on the same line where I change the feed rate from F800 to F50.
The reason the Speedio is so amazing for this kind of work, is that I have the flexibility to throw all these tricks at it. Not a Haas or a DMG or even a Robodrill has the flexibility to do the things a Speedio does to let me balance speed and accuracy as I need. Here is one interesting example:
On the Fly Accuracy - YouTube
In this video, we have a simple square with arc corners. The far corners are being machined with roughing level accuracy, the near corners have high-finish accuracy accel applied. I don't know of any other control in the world that lets you do a trick like that on a cut contour without having to stop all motion to reset the look ahed pipeline.
