Engineers Looking For Stuff
Is anyone aware of a good method for securely clamping a small (8mm) threaded rod, that can be quickly clamped/unclamped electronically?
You need to be a member of Engineers Looking For Stuff to add comments!
Join Engineers Looking For Stuff
Did you find a solution to this, or are you still looking?
Joseph - Do you have a link to that particular model? I have investigated several syringe pumps and most seem to have a fixed gear.
Also, tangentially, you may be right that trying to clamp onto the rod to engage the gears may not be the most direct approach. Don's suggestion of a solenoid could be used to push a gear back and fourth to drive different axes, but I would be concerned about guaranteeing that the gears meshed reliably, as they would need to engage immediately, without the motor spinning, to maintain print fidelity.
Max - A lot of the syringe pumps use threaded rod for mechanical actuation. One particular model does have a means for clamping and releasing the worm gear. It is performed manually, not electrically, but it may be a useful principal. However I am having a little difficulty visualizing your application.
Hi Don. Sure! I'm working on a 3D printer design that calls for what amounts to an very simple transmission - a threaded rod sitting directly on the head of a stepper motor that can switch between the X and Z axes, which do not need to move simultaneously. To drive either axis, the clamping mechanism would close on the spinning rod to either move the z axis up and down meshing directly with the rod, or clamp onto it to drive a gear to move the X back and fourth.
If there are other ideas for how to accomplish this I am open, but part of the intent of the design is to create a beltless/chainless system to simplify print calibration.
A solenoid with a threaded shaft?
Any other details?
Please check your browser settings or contact your system administrator.