2 ms·
If they don't have to move fast, could you DIY an actuator with a stepper and a threaded shaft? Steppers are pretty cheap thanks to 3D printers.
by FeepingCreature 3y ago
If they don't have to move fast, could you DIY an actuator with a stepper and a threaded shaft? Steppers are pretty cheap thanks to 3D printers.
- RobotToaster 3y agoThere are arms using steppers and 3d printed epicyclic or cycloidal drives.
- FrojoS 3y agoFor a useful robot arm, you need high forces/torques. Usually, this is achieved by high ratio [1] gearboxes between the motor and the joint. Those are expensive, and inefficient and make estimating the output force via the motor current almost impossible. [1] In the order of 1:100, see e.g. https://www.harmonicdrive.net/ https://www.harmonicdrive.net/