A cool little experiment in gearing I saw a show where a guy was riding a bike with square wheels on a wavy runway and he was rolling along nice and smooth. That's when I started to get into non-circular gears like you see here. They just amaze me I later found a dxf of these gears and went to town in SketchUp. Pretty cool conversation piece. Have fun Mark Note *Because the teeth are small I use a 1/16" bit for this cutout. Attached files Non_Circular Gears.dxf (464.8 KB)Â Non_Circular Gears.zip (378.7 KB)Â
I seen custom clocks with odd gear shapes also. Some good vids out there also. It is a trick on the brain that's for sure. But if you thing about it it's mealy interlocking a distance relationship through a mechanical means. Works in 3D too. Good find, thanks for the code.
Ben that is just AWESOME! I have to find out how he made these there must be software for this. Thank you for sharing this Mark and Trish
I have tried this one but did not have a lot of time to work with it. I plan to go back and check it out more as soon as I can Thanks Sam Mark and Trish
Hi All, I have just received my license for the Gearotic Motion software which, if you are into gears, is just a brilliant piece of kit. Thought you may be interested in seeing some cut in acrylic. Tweakie Attached files
That is truly a work of art! (to me) Thanks for sharing this Tweakie. I have had very little time to play with this one like I would like to but as things settle here I plan on getting into it straight away, it does some really amazing things. Here are some examples of somethings I would like to make Thanks again Mark and Trish
Unfortunately the current version of Gearotic does not support non circular ring gears but who knows this feature may become available in the future. Of course Gearotic Motion has a much more serious side – making the GCode for spur gears / helical gears which can be conventionally cut on a rotary axis but using a parallel end mill. This arrangement circumvents the patent which was taken out a couple of years ago for this method but using an involute ground endmill. Some of the examples of gears shown on the forum are just awesome and it is well worth the visit. Tweakie. Attached files
Those came out fantastic! Do you have any idea about how long it took to cave these out? and is that 1/8 or 1/4 thick? Thanks Tweakie Mark and Trish
They are 6mm acrylic and were laser cut taking about 15 minutes for the pair, the largest is about 100mm across. (Those in the first picture were 3mm). Tweakie.
Thanks Tweakie! They are truly awesome. I am guessing you are planing to mount them and try them out? Mark and Trish
Nice! Is the rotation nice and smooth? I bet they are cool to see in action Thanks for posting Mark and Trish
They do run nicely but the motion is not linear as can be seen in this simulation http://www.youtube.com/watch?v=_I_sMO_cTrc They are strange but fascinating to watch and I am sure that these gears have an application for self build wall clocks which could have stunning visuals such as the kinetic sculpture in another thread. Tweakie.
wow, i'm amazed! i thought it to be completely unbelievable! I won't believe still unless i see it with my own eyes!
Obviously requires the camera shutter to make it visible so you cant just fit one to your bike and amaze onlookers but an excellent illusion, thanks for posting E-T, something else I have learned. Tweakie.
