I can hear the 3d printers whirring in the background... what a soothing sound :) Fantastic video, very helpful to me in gathering some ideas for a complex mechanism. Thank you for making this!
Thank you so much for these beautiful models and the excellent explanations. My first job out of university was promoting Fischertechnik construction system for teaching technology in schools. I spent some two years promoting such mechanisms !
An interesting video! Some thoughts: 1. One *serious* advantage of these systems is the built-in acceleration and deceleration at the opposite ends of the linear movement, which puts *MUCH* less stress on the components. 2. The final mechanism has a hidden feature that wasn't included: the path on the drum can be fairly complicated, so as to move the end of the arm in all *KINDS* of interesting ways, especially if multiple drums are connected to the same endpoint.
I'd love to see these designs updated to have various roller bearings integrated into them, and then a weighted crank so you can whip it and watch the mechanism really go. I love the size of these, perfect for a classroom setting.
this is a huge effort made to simplify such complex concepts. Many wouldn't get it until you showed it that way. many thanks for your efforts. My only request is if you can make tutorials on how to model these prints using maybe fusion 360. That would be great
Brilliant models, thanks! I'm trying to decide on the best mechanism for powering a scroll saw with an electric drill. I rather like the spur gears version, which seemed to have a nice smooth action that would cope with the relatively high speeds. The rack and pinion is rather cool though, and the faster motion could be in the cutting direction.
If I wanted to use a scotch yoke device to get a motor to push a rod up and down but I also wanted the stroke of the rod to be variable, what device could I use?
Great video! Is there any way to create a cam/scotch yoke/mechanism that will create a motion outward in both directions at the same time? I need to create motion that goes outward in opposite directions when a force is applied from above the mechanism. The force would be heading in the southern direction along the Y axis and once it hits "0"/the ground, the 2 arms should be out on the X axis in opposite directions a small amount. They would need to retract back into the mechanism when the force is lifted, kind of like when you lift off the handle of a self inking stamp. (I'm designing a low cost manual jig to help farmers fold the Kliklok paper produce containers I created to replace plastic clamshells. Hoping someone can direct me to a mechanism, having trouble finding something that moves the arms outward in opposite directions with a force applied in a perpendicular direction downward.)
was thinking on the last one , you could mound a dish with a hinge on a shaft and use the same drive for the up and down on the edge of the dish , if you alter the angle at wish the dis is sitting on the axle the stroke will increase of degrease , was thinking on using this for a drillpress converted to a honing machine , only down side is that the scratch pattern angle changes as the transfer of the stroke is one on one , youre changing the angle of the crosshatch together with the stroke , at a longer stroke the hatchpattern gets steeper and vice versa it still might work if you can move the contact wheels that transfer the stroke out and in towards the center
I had replied on your previous video about the Ariel atom go kart, thank you so much for the cad files. If you've got some time to spare, could I pick you brain and ask a few questions? Mostly about handling, reliability, timeframe, and cost. If you want I can give you my email to discuss.
