Tool changer technology

[astrn]

You can also use neodymium magnets for keep the head in place. The solenoids can act as a guide for the head to precisely position and lock it in place. It will be much much lighter than any other solution.

[astrn]

It will be also very easy to program. Just on/off gcode to initiate the solenoids.

[cricket_belt]

A cool video i've not seen before with fast tool changes.

Considering mounting direction on the tool holders is paramount. the head-on orientation does not seem as repeatable at high speeds as these side-loaders.

https://www.youtube.com/watch?v=EmZUaAau1Cc

[Eirikhe]

I was thinking something like this, smal light weight, can probably be adapted to the e3d TC with not to much work. We only nead 1/4 turn to clamp the e3d TC, so could be fast as well depending on gearing. Probobly need a switch for detecting locked and open position.




The motors look bigger than they are in real life, motor ø12mm 10-20gram

[Mike]

In the end I think a Maxwell Coupling is the way to go.
E3D had good reasons to do so. Any shock or vibration: The Design ensures that it will fall back in its intended location/orientation.
https://www.youtube.com/watch?v=ekUkI9iWUoM

I like Joshua Vasquez design for beeing maybe the lightest option out there.
The HevORT provides great potential to go fast in printing. Adding too much weight E3D-style takes one of the major benefits of the HevORT design away.
The remote option is just a wonderful concept and seems to work great:
https://youtu.be/HDDvr3DhQMw?t=60

However, @Eirikhe: Great Idea! Adding a 20g motor to remove the drag of the cables of the remote system.... that sounds like a winning trade.

[dagolard]

What about a combination? Maxwell coupling + a solenoid with spring (in closed position)? Should be fast and light, and the solenoid is only needed to open the lock.