Each year he creates a new thing with one main purpose: If you do, you are missing the point. For motors, he went with non captive steppers. A lead screw usually with an acme thread is passed through this nut.
For structure, the router uses MakerSlide and v-grove wheels. The spindle is a simple brushless hobby motor and 30 amp speed control. Inrunners generally have less torque than their outrunner counterparts, but they make up for this in RPM. The router made a great showing at camp, and [Bart] decided it needed a 4th axis. He sourced a rotary axis from eBay. To keep the software simple, he connected the rotary axis to the extruder outputs on his controller.
He was then able to hack the mach3 wrapped rotary post processor to output extruder commands. The results look great.
Bart is the originator of MakerSlide. He made the stuff! He has been doing lots of cool projects with it. With a pinion and spur arrangement typical for RC cars delivering all the torque to one side of the motor, it seems like the bearings would have to resist the torque value divided by the gear radius. You are right, there is probably a lot of slop axially in the motor.
But with that coupling that is probably the last thing I would worry about. 4 axis delta robot icon long as he is doing wood or foam it will probably be ok. Anything harder… forget it. Out runners must be delivering most of their power via trust since they usually drive a propeller and I guess the bearing are similar I just looked up the rating on a random 4mm 4 axis delta robot icon 12mm OD ball bearing, 35kg radial, 32kg axial. The mechanical engineer part of me is cringing as I 4 axis delta robot icon about how not suitably stiff that mechanism is for doing any kind of machining where you want to hold a reasonable tolerance of any sort.
Neat idea though, and properly executed, could yield a really useful and unique machine. I got some from http: That is an interesting combination of technologies. I too had not seen non-captive steppers before. The only problem I can see is those non captive motors waste vertical space. If you want larger, you need to have a room taller than twice the hight of the delta router. True, unless you mounted the rods statically on the frame and have the motors moving up and down them with the 4 axis delta robot icon ead attached to the motors somehow.
That would be worth trying I reckon. That means wasting a lot of energy moving all that mass though. I never knew Mach3 could handle hexapods. I learn something useless every day I guess. I think that is all there is in relativistic space. When we crack the 4th dimension you can bet that Linux will handle it first too! You are commenting using your WordPress. 4 axis delta robot icon are commenting using your Twitter account. You are commenting using 4 axis delta robot icon Facebook account.
Notify me of new comments via email. Notify me of new posts via email. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. I also made a big makerslide delta: Most companies that make steppers make these kinds of motors as well. I shall peruse the ebay for such 4 axis delta robot icon items. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in: Email required Address never made public.
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