How to Draw a Geneva Mechanism in Fusion 360
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- เผยแพร่เมื่อ 8 พ.ค. 2024
- In this video I'll show you how I drew the Geneva Mechanism in Fusion 360. Once you get your head around using constraints (relations) and construction lines you can create very complex, adaptable sketches with ease!
Link to the original video - • The Geneva Mechanism
CAD for Newbies free Fusion 360 training - • Correctly Dimension yo...
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I watched through your cad for begginer stuff and after taking a look at the mechanism and how you made it, I used it as a benchmark to make a 3d mechanism, only when I get my printer will I be able to see if it worked, but it was a fun challenge, I gave mine a stand and a hand crank as well. It was fun.
I like to do things myself then see how others do it. I have not used constraints in fusion yet. I divided it up like a pie and drew each circle and slot allowing for tolerance. I made the driven and drive gear at the same time. took longer but i think they turned out quite well. even added extra holes for design.
I will consider learning to use constraints in the future. you made it look so easy.
Thanks for sharing, constrains are so cool but also quite a challenge
Fantastic as always Angus. Clearly I'll be re-watching this several times. Practice makes perfect eh :-)
Wow, I thought it might involve a lot of math - but this was rather elegant solution. Thank you for the great video!
Thanks! you motivated me to learn to use Fusion 360!
I am your fan Maker's Muse. This video is GOOD. keep uploading 3d design videos of 3d printing projects
It's beautiful!
You forgot to put a clearance in the drive wheel for the driven wheel to pass through. That is to say: you extruded too much. :-)
ah whoops haha, good catch! even after practicing what I was going to say I still messed up and selected one region too many. I guess that's why it's called 'rapid' prototyping :)
Maker's Muse: Great tutorial though. Well presented.
Maker's Muse If you use separate components instead of just separate bodies, when you do cuts, the extrude window has options for what components your effecting. On joins or new bodies, it's always to the active component.
Generally components make life easier in Fusion, which I've learned the hard way this week. 😄
great vid, will have to dive into 360 more.
Pressing 'x' will turn a normal line into a construction line
I always start by creating names parameters for variables such as 'number of slots' or 'pin diameter' in this example. Then type in their names. I also create 'tolerance' parameters and then when typing in a size I can type in 'pinDiameter + tolerance' rather than fixed vales
Jen Yates I don't follow but I would like to see how exactly this is done as it would be quite useful
Steven Bartels In the Modify menu, very last option :) You make new User Variables in there, and you can type in their names in place of numbers in the sketch. Then you can change umpteen identical values with a single change :D
W00dledude that makes sense! That is awesome! Can you create variables that are formula dependant? I could imagine it being helpful if you wanted say one thing to have a distance or angle that changes dependant on the value of another... Line two is 7/10 the value of line one... Angle b is 37 percent of c and both are offset from angle a... Basically any standard highschool equation you could enter on a graphing calculator...
They mention formulas, so absolutely, there's at least some capacity for that. I haven't played around with it enough to really tell you more, unfortunately, but the answer to your question is yes :)
W00dledude thanks mate!
Great video :D always cool to see how different (or not) people use fusion ;)
Some tips:
- Normal to Construction line: select line(s) hit "x"
- Tolerances: klick the outside face of the wheel or pin, press "q" and change it (someting very odd if you once learned Solidworks, i know)
Keep up the great work :D
Haha cheers, yeah I keep forgetting to use x and yep... coming from SW I feel so dirty doing push pull modelling but should just stop resisting :)
i feel your pain... fusion is sometimes so different... often in a good way, but i miss the feature tree :/
I've become used to the alternative to the tree along the bottom and find it fairly easy to go back and change things but it does get pretty unwieldy for biiig complex projects.
Maker's Muse Man, I feel that. Try designing a house in Fusion with any amount of detail XD
Hi Angus! The bug bit me hard and I went through your entire cad for newbies playlist and learned a lot. But everything you've demonstrated is about creating single bodies. For example, in this video you just skipped to the assembled drawing after making the fancy part. How did you piece it together? How do you define constraints between bodies? Can you put together a video that goes over assembling different parts? Thanks!
Awesome Angus! Thanks!
Where's the best Fusion 360 intro tutorial?
look up lars christensen on youtube.
Great video! Could you please make video on how to index a chain for example using a geneva wheel? I also looking at globoidal style lately. Keep up!! Thank's!
Thanks Angus (again) for the excellent video, and the AutoDesk link. But what do the apps you mentioned do? I couldn't find Inventor, 3DS Max and Maya in the AutoDesk Products listing....
Interesting for sure, but wait what? Construction Lines? oh boy change my world....relatively new to Fusion and Sketches mesh well with the way my brain works, but they do often end up looking like a blind butcher went after my sketch with a dull hatchet. So thanks for dropping in that tidbit :)
Would be great if you could do a video on how to edit an stl file downloaded from thingiverse or similar.
After watching this, I don't like SketchUp anymore.... Damn you, Angus. :)
good! :D
I also tried several CAD programs, starting with Sketchup followed by DS Mechanical just to end up with Fusion 360 because it´s just the best one out there I'd say :D
I'm an OnShape guy
Is OnShape 100% free?
Are any of the paid TurboCad programs any good?
Is inventor better for 3D Printing - conrstructing things for 3D-Prints than Fusion 360?
Wouldn't the driven piece remain locked as there is no cutout on the driver's nesting wheel thing?
I realize it's kind of randomly asking but does anybody know of a good website to stream newly released movies online?
@Remington Landyn flixportal :D
@Myles Silas thank you, signed up and it seems to work =) Appreciate it !!
@Remington Landyn You are welcome :)
Want to properly appreciate constraints? Try a little game / app called Euclidea, where you're challenged to draw specifically constrained sketches using just a ruler and compass.
It's a very well made and educational app, and quite addictive to the right type of person.
Well thanks for that - this Euclidea (note the "e") game IS addictive - as if I didn't already have enough distractions....
OzFaxFlyer: Oops. Typo fixed. Also... Yes! I have finally passed on the curse!
Thanks Michiel,
And well, I guess I'm "...the right kind of person..." - and it can be confirmed that my good wife is NOT! ("What are you wasting time on now?")
Doesn't the mechanism need a hole in the drive wheel, in front of the pin to let the driven wheel arms go trough?
Yep it does, but I'm sure you can figure out the rest :) The frame parts and that are easy.
Maker's Muse How big it needs to be is easy to figure out. But you never showed it in you videos. If you don't know it needs to be there, it is hard to figure it out that you need one
I added joints, contact sets, and was able to see it move.
Then I went to "animate" but have no idea how to make a movie showing the gears move. Any hint?
Silly question, but aren't the slots just too deep? Better too deep than not deep enough, but.. you set the depth of the slots the same as the distance from the center of the drive wheel to the center of the pin, but.. the center of the pin will never make it that far into the slots since the center of the driving wheel is outside the edge of the driven wheel. Am I missing something?
Great videos though. I just started using Fusion and have managed to do so many more things that would have taken me ages in OpenSCAD.. :)
I derived the way to get the proper depth for the slots.. found in your 'using constraints' video :D Draw a line that coincides with the center of the drive wheel and the driven wheel . One end point concident with the driven wheel and the other one conincident with the construction circle that goes through the center of the pin - use that line instead of the line that goes all the way to the center of the drive wheel to set the depth of the slot. Rotate everything to confirm. Tadaa..
I think you are right, it should have been the distance between the construction circle and the driven wheel circle, and not the center of the driving wheel.
For a start, you need to create a components first.... work from there and create components as you increase the parts to use. Sketch is under/within a components. This is a top down structure best practise suggested from Autodesk. This is the first mistake that most people including myself made....
What are the main differences between Fusion 360 and Inventor?
Are any of the TurboCad products any good for modelling to 3D print? I was thinking of the 2017 $150 TurboCad then saw the 2015 Pro Platinum for $245. Any ideas?
One of the big things is I don't want anything on the cloud. The chinese have shown they will take whatever they want. Then there are those in any government that will slow your ideas to be stolen with no financial compensation for your creativity. I have thought about openscad, free cad and others. Any ideas? I love Maker's Muse and all, subscribe to his channel: but every time I hear him connecting himself to the Chinese, I cringe.
Why pay? Between Blender, FreeCAD and OpenSCAD, you should be able to do just about anything you'd want to do.
How'd you add your logo?
Anyone know what hardware is needed? What size rod, bolt, and bearing?
Try make spinner like this.
Good tutorial but there are a couple very minor errors that were easy to sort out. (1) the method use to determine the length of the slot makes it to long. (2) there is a region that must be cut away from the driver wheel or there will be interference preventing the wheel to fully rotate. Here is a link to imgur images pointing out the errors: imgur.com/a/I8t6wkH
Note that I did not discover the slot length issue until after I had the gear full built and assembled. I figured out a solution which is to just add a reference slot from the point the driven parts circle intersects the vector from the driver part to the edge of the driver parts circle. The section shown in the sketch in the imgur link below. I have not implemented it in my drawing as trying to do it breaks my time line so badly I pretty much have to start over from scratch to fix it (.
You say very minor, but issue #2 makes this design completely unusable. I can’t believe he didn’t add that part of the driver wheel in his video. I don’t know how no one else caught it.
Angus when you say tolerance you in fact mean clearance. Tolerance is the variation in a dimension and clearance is as it says, the clearance between two items. Otherwise a great video.
angus, my constraints are totally not working. 3:03 you dimension the distance between the circles, but instead of the line changing it's length, the diameter of the circle is changing.
4:13 you make that line angle itself to the center of the big circle(sorry for the foggy words) but in my case the line just elongates and touches the circle....
pls help
p.s. love your vids, im a subscriber
Hi bro at 4:13 i had the same problem. To fix it you need to select the line and not the actual point else the point joins onto the center
Dude somone should make a Geneva Drive revolver full auto
Your slot is longer than it needs to be in this version you drew. But i guess that motivates people to make a better parametric model.
*Why so many views of your original video?* I get that it is a moving mechanical 3D printed item but how many people actually knew what a "Geneva Drive" was before watching the video? It seems weird that it would have that much interest and more than 5x the views than there are subscribers. I'm not knocking it and I may print one, but I am curious why it has over 777,499 views at this moment in just two days.
ElmerFuddGun that's happens a lot when the video gets front page listing on TH-cam, common occurrence, relatively low sub count guys get HUGE, non proportional views when it hit the 'trending'/popular listing, it's good, gets more subs and interest.
time to step up to using variables man =)
How can I get fusion 360, for free? I am a sudent and I looked around on their website, but there is only a 3 year free "trial" of fusion360,fir students. Iis there a way if getting fusion 360 for free forever? Or whats ths price of fusion 360(for a student) per year?
I love your videos, great quality, great research and information, keep on making them!!!
you do get it for free you just renew when the trial ends
yea when the trial ends you check the "i am a student" box and you can use it without buying :)
Sam Etchells Wow, ok, never thougt autodesk is so dumb to make it so easy to get a great piece of technology for free!!
it is meant to be free for students :P
Dude, as a student you can get more than Fusion 360 for free, check out www.autodesk.com/education/home you can get Inventor, 3DS Max and even Maya free as a student!
10:52 no that not work. it not turn lol.still need one arc on drive and when mill you have tool offset wear make it size. OR this case smaller:
5:44 looks like length is now distance of these 2 circles 20mm and 4mm pin. why need that constrain then. so you made bobo. you made depth longer than it need to be. construction like should start from 60mm circle not center of drive? yup it shows on your print slot is unnessessary too long
but what about the frame?
YES...I understand
i dont....
I forgot how triggered I can be by a poorly defined part. It does get the job done, but in my experience, if you go back to adjust this, all hell breaks loose.
not so, everything updates perfectly. The only time you'd really break it is if you wanted to redefine the pattern count and even then you'd have to restore one maybe two constraints.
That's one or maybe two constraints too many. Then again when I'm doing this, I have to make it two hundred pound gorilla proof. Please don't take my criticism harshly, I really do enjoy your videos. I'm just autisticly screeching into the void.
What no animation of it working slacking
That won't work because you need a hollow on the drive wheel to allow the slotted wheel to turn
Good catch :) Yeah I made the mistake of selecting the whole region instead of masking it off with another circle. No matter how much I prepare for a vid something always seems to sneak past!
Yep knew it was an oversight, great vids Angus I have learnt heaps from your vids.
Anybody else tried making a 4 dwell gear and failed?
YES
George W. Nope, started to write my coment, as the video was at 2:00. I wrote about 2 minutes long. Posted it and reloaded the video, an there were your coments, with the mark "35 seconds ago"!
yeah, but i still posted it first do i have that
It wouldnt work lol
Hello you are cute plz marry me
Hello
first
fifth
9 minutes late
I don't even know what this thing is and you don't tell us at the beginning so thumbs down and skip
He did mention it:
1 - in the title
2 - in the first 10 seconds of the video
3 - he referenced the 7 min video where he had a full explanation in the first 15 seconds of this video.
4 - Wikipedia can be your friend: en.wikipedia.org/wiki/Geneva_drive