Don’t know. Don’t care.
The point I was making is that there is in fact a limit to speed of bending. The big presses Tesla uses for steel and aluminum body panels top out at like 20/22 strokes per minute and Tesla is not running the presses at that speed. Far more likely at 12-15 strokes per minute.
How fast can a bending machine bend the various Cyber panels considering their size, weight, type of bend etc….?
Like I said, hope they have more than one brake press or that there’s an extreme simplicity to the bends they need and that the final composition of the material adds to that simplicity. I suspect, and given Elon’s comments, it isn’t so.
I think the most complicated piece has two bends and they are less than 30 degrees. I'm sure they'll have multiple presses.
250k units a year*10 bent pieces * 2 bends /300 days / 20 hours / 60 minutes = 14 bends per minute. Two units would be around a 10 second cycle time each.
Are there any pieces with more than two bends?I was wondering if they didn't have something more....radical than a conventional press brake in mind for forming CT panels. A break is an awfully slow way to form panels vs a stamping press. Those pieces look like aluminum to me, but it's hard to tell on a video.
I envisioned something more along the lines of a stamping press operation, instead of forming, multiple, simultaneous actions (slides) performing simultaneous bends in multiple locations. Much more expensive up-front tooling, but far easier to hold tolerances and get out reasonable production numbers.
Elon has mentioned laser scoring the back side of the bends.
I agree. You can build as simple or sophisticated a brake press as you want. You can make it virtually any size. I highly doubt Tesla bought one ‘off the shelf’. They probably chose a base style/type/size and then had the guts built to suit their specific needs. Just like they did with the casting machinery. Maybe they can bend more than one panel at once? Two robots, two parts, same bending angle?
Still, you can only bend up to a certain speed or you’ll rip the metal, but you could conceivably do multiple bends at a time.
Could bend all four doors at once, I suppose. Or, bend the roll (or entire side) on a single process, then cut the doors and fender shapes. Or (best option) precut without separation, bend, then separate. Puts everything on the same reference plane.