<![CDATA[SoliForum - 3D Printing Community — [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/topic/4302/wip-print-sweeper-proofofconcept/ Tue, 19 Nov 2013 17:03:04 +0000 PunBB <![CDATA[Re: [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/41964/#p41964 New Valence Robotics (http://nvbots.com/)

]]> Tue, 19 Nov 2013 17:03:04 +0000 https://www.soliforum.com/post/41964/#p41964 <![CDATA[Re: [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/41958/#p41958 Claghorn wrote:

I wish I could find a pointer to a video someone posted in this forum not too long ago. It showed a really terrific sweeper (but possibly a more complicated one that needs more motors). It had a wedge that slid under the part to remove it when going one way, then a flat edge to shove the part out the side when going the other, but if I recall, it did need a second arm to shove the part over to the other side of the wedge.

I think it may have been a group who was trying to convert a solidoodle to be able to print continually remotely.

]]> Tue, 19 Nov 2013 16:27:32 +0000 https://www.soliforum.com/post/41958/#p41958 <![CDATA[Re: [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/39428/#p39428 I've seen a couple of sweepers, but seemed too complex and/or had too many things sticking out of the frame.  Hence this.  However, even if the bent rod / overconstrained geometry issues are resolved (e.g., flex coupler and/or remove bearing), I have no intuition about stresses on various parts, so I'll just play with it and see what cracks/fails, if anything.  Hoping I can get away without a blade if I let print cool down enough.

]]> Sun, 20 Oct 2013 15:31:07 +0000 https://www.soliforum.com/post/39428/#p39428 <![CDATA[Re: [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/39426/#p39426 I wish I could find a pointer to a video someone posted in this forum not too long ago. It showed a really terrific sweeper (but possibly a more complicated one that needs more motors). It had a wedge that slid under the part to remove it when going one way, then a flat edge to shove the part out the side when going the other, but if I recall, it did need a second arm to shove the part over to the other side of the wedge.

]]> Sun, 20 Oct 2013 15:13:41 +0000 https://www.soliforum.com/post/39426/#p39426 <![CDATA[Re: [WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/39421/#p39421 Great mechanism! I think a lot of people would pay cash-money for this as a kit.

]]> Sun, 20 Oct 2013 14:51:52 +0000 https://www.soliforum.com/post/39421/#p39421 <![CDATA[[WIP] Print sweeper proof-of-concept]]> https://www.soliforum.com/post/39418/#p39418

Work-in-progress, but far along enough to demonstrate idea.  Basically, a threaded rod with a sweeper attached to it, and a curved slide at the end to raise the sweeper.  Other than that, just needs an endstop input and a stepper driver, plus some basic code (using an Arduino Mini and a A4988 on a breadboard currently, not shown in video). Once it is complete and tested (which, given my free time, might be a while smile ), I plan to post design (SCAD/STL, Eagle, and code) under CC.

Pretty simple overall, only catch is that threaded rod needs to be left-handed (and mine was pretty bent, as you can see -- mail ordered, didn't have luxury to choose).  Fits completely inside frame (that was a design goal) and requires minimal modifications (just a couple of mounting holes, although in the video the whole thing isn't screwed down).

]]> Sun, 20 Oct 2013 14:26:11 +0000 https://www.soliforum.com/post/39418/#p39418