![]() ![]() I just made a cover to keep everything contained and that was it! a simple 4-1 planetary gear box. lastly I added the sun gear, which is what ends up being attached to the motor. I then made a housing to hold everything with screws. I then made 3 smaller gears using the same tooth profile, just less teeth as the planet gears. which can be found by clicking Shift+S and then scrolling down to find the Spur Gear plug-in.Īfter playing around with the backlash, and the number of teeth I used that gear as a cutter, to cut away from a circle leaving me an outer gear. To skip over the bring math bits, I first used the Fusion360 plug in for Spur Gears. Īnd I highly recommend you check his channel out. There's an amazing series on gears by Antalz. Since i had no idea how to design anything gear related in fusion360 I took to YouTube to offer me some guidance. ![]() Unfortunately the cycloidal gear reduction would've been too expensive bearing wise so I had to forget about using those. Most of the parts need to be 3d printable, and I wanted the cost to be below 30 dollars per gear reduction, of which, 2/3 of it will be going to bearings anyway.īecause of these "limitations" I only had 2 options, planetary, or strain wave. I cant spend hundreds of dollars on bearings and spacers and screws. The last characteristic is that it needs to be CHEAP. Since I wanted this to be a desktop robotic arm, everything had to be in a small package. I also needed it to be in a small package (bye bye spur reduction). I was hoping for a 30-1 reduction, meaning that when the motor spins 30 times, the output will only spin once. I needed it to be a REALLY good gear reduction. In my case I needed 3 specific characteristics. This will make the smaller gear half as fast.Now, I'm not going to get into an argument as to which gear reduction is best, obviously each scenario requires different mechanical systems. Remember that with the gear ratio, the 48 tooth gear should move twice as fast as the smaller gear, so set the motion of the big gear to 360, and the smaller gear to 180. Make sure to ground the central piece so it can’t move.įinally, we want to use the motion link to tie the movement of the two gears together. This allows us to dictate the base spin location of the gears. Now, create as-built joints between the gears and the central posts. Create a body to make up the center of the gear, then create a component from the body. ![]() When you think about it, this gear has 48 teeth, meaning it also has 48 gaps. What we want to do is rotate our gear so our teeth align. Notice that the gear with 48 teeth is twice as large as the gear with 24 teeth. Now, let’s create another gear that has 48 teeth. Change the hole size to 1 inch and click the button for “ok.” This will create one gear with 24 teeth. Click on the script (doesn’t really matter which of the two), then click the button for “run.” To start off, let’s create one gear with 24 teeth. This script is designed to help you create gears inside of Fusion 360. ![]() In this particular case, we’re going to scroll down and look for the function labeled “spur gear.” You can access them in the “tools” toolbar, under the add-ins function, under the scripts and add-ins button. Scripts are basically little mini-programs inside of Fusion 360 that automate an action. I don’t want to get super in-depth about the mechanics of gears in this particular video, so what we’re going to do instead is use a script to create our gears. In order to do this, we’re going to start by creating our gears. In this video, I want to talk about creating operating gears inside of Fusion 360 that have movement tied together, so that when one gear moves, another gear moves accurately at the same time. In this series, we’ve talked about the different kinds of moving joints you can use in Fusion 360 in order to simulate movement. In this video, learn to use Autodesk Fusion 360’s joint simulation tools to create working gears inside of your 3D models!ĭo you like these Fusion 360 Tutorials? Make sure to subscribe to my YouTube channel to stay up to date on the newest videos! Subscribe Here – The Fusion Essentials YouTube Channel ![]()
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