Robotics Hobbyist

R/C Helicopter project

NOTE: 12-20-2018, If you see rendered images of any kind, those were created by exporting what you see out of Shapr3D to a STEP format, then imported into Fusion 360 for the renderings. If you see threads or fasterners in any of the parts then 1 of 2 things happened here, the fasteners were imported from Fasteners that were Freely Downloaded from and used in the model. Threads that reside in a hole or shaft were added using Fusion 360, but only the thread was modeled via Fusion 360. ALL parts have been modeled 100% in Shapr3D except as listed above (Threads, Fasteners or Renders).

In between working on the Humanoid Project and some misc. little things I am in the process of modeling (attempting to) a R/C Helicopter. I wanted to share a sneak peak at one of the parts I am working on (work still in progress), but it is at a point that it can be shared.

This will be the swash plate which controls all the movement from the servos to the head, affecting the pitch and ailerons of the main rotor.

I have below a few screenshots of the part assembled and a couple screenshots showing the breakdown of all the parts to make this object. There are lots of complex shapes to achieve the results, and there is still quite a bit left to get it to where it needs to be.

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Here is another image that is ready to share. This one is also a work in progress and will eventually have some changes to it. I need to get some of the other connecting pieces modeled before I make the changes, this will allow me to see how they will intersect.

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At least 6 years ago I also wanted to do things like this, I tried many desktop CAD softwares and was unable to do very much at all. I all but gave up. For one reason or another my interest started peaking again over the last 2-3 years and I would dabble with CAD but still couldn’t produce anything of my own, I would only lightly modify others work.

Back in February of 2017 I started looking for a way to do this with the use of a tablet and pen. During this search I came across Shapr3D and gave it a shot.

Now here we are about 7 months later and I am creating many of the things I had wanted to create. I don’t think I am at a point to create full tutorials as I am still experimenting on how things are done, and sometimes a simple part takes me many tries, I have much to learn. However, if you need help with how to do something I encourage you to look at the tutorial videos, and if they do not help, post here in the forums as many of us are always trying to help out.

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Here we have the swashplate follower. This is another part with many pieces.

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And here we have the linkages to the blade grips.

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Now we have the main Shaft locking collar and the Bell Crank linkages. Also added the screws to hold the swash plate in place.

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I had some more time today to work on the main Shaft bearing blocks, also bearings (reference only) and some screws. The screws are for visual reference as are the bearings, I did not fully model either.

Here we have them assembled and a breakdown view.

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And here we have it added to the assembly. It is likely to be moved when the frame is modeled.

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Here we have the part that was what I thought would be the most challenging, the main drive gear. This was rather simple after I took time to think about it.

I just sketched the overall sizes then divided the number of teeth into 360 to get the angle. The I sketched a single tooth. Extracted that tooth, then mirrored it using the copy selection until I had a complete gear. I did this just to the teeth. Then I finished the inner part of the gear and used the union feature after moving it into place.

The results are below, a 129 tooth gear.

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And here we have it in its approximate place in the assembly.

Here we have the auto rotation gear modeled. Created using the same process as described above.

And here we have it installed to the assembly. The tooth pattern is slightly different as there are only 90 teeth, which will drive the tail rotor.

Here we have the inner hub for the one-way bearing.

Here we have the one way Hub and bearing assembly.

Sorry for delays here, but I have 5 projects in total going on and I bounce around a lot. But I intend to finish this one as well as the Humanoid Robot one.

So rather than just complete a rough simulation of the bearings like I have done with much of the above, I decided to fully model the thrust bearings fully and show a breakdown view of the assembly.

Here we have the battery and electronics tray modeled and in its approximate position.

I have been working on this R/C Helicopter some more. I have tweaked some of the parts with Shapr3D.

I have also imported this into Fusion 360 and added some Nuts, Bolts and threads to give a more complete look. I have also rendered it using Fusion 360 to give an example of what this would look like if it were to ever be sent out for manufacture and testing. Currently there are no plans for this, this model is just for me to practice modeling in 3D.

Here is a screenshot showing some of the new work that I have completed using Shapr3D. I have the rough shape of the frame done (it will change as the model evolves). I have the front electronics tray in place. I also added some screws to hold the bearing blocks to the frame and some on the head. As time goes on I will replace all the fake screws.

Here is another update on this project. I have replaced all fake screws and nuts with modeled ones. I’ve also added threads to the rods and any hole that required threads. The nuts, bolts and threads were completed using Fusion 360.

I have also modeled the servo motor trays and fixed the holes to mount them. Here are a couple screenshots. Notice the trays were hollowed out using the shell feature. This along with all solid bodies was modeled with Shapr3D.