To add them to your designs, all you have to do is add a half circle to the sides of the slots, with a radius of ½ the bit diameter. Because of this, “dogbones” have become a common design practice to ensure parts interlock tightly and properly. DogbonesĮver notice the slots that vertical plates go into look like a bone? Thats because of the mechanical limitation of CNC machines as talked about earlier-all inside cuts have a radius.
I recommend making all your radii 1mm or bigger as a general practice if you don’t know your service’s end mill size or will be experimenting with different cutters, but it is always a good idea to check in with your manufacturer to see what size end mills they use. 5mm, meaning the smallest end mill that they use is 1mm in diameter.Ī lot of FPV CNC services use bits 2mm in diameter or smaller, as m2 holes (2mm) are a common size for frames. Armattan productions state the minimum radius can be. For example, CNCmadness (a canadian cnc cutter) uses a 1/16” bit as their standard, so all radii are recommended to be made. A design with an inner angle of 90 d would result in an actual part like the image below.ĭifferent services use different sized end mills. Inside corners and curves cannot be straight, sharp angles like as seen in the picture below. Because of this, all inside radii (fillets, rounds, slots, and holes) must be ½ the diameter of the bit used. Mechanical Limitations and Design Requirements Minimum radiusĬnc routers (the machines used to cut) use circular end mills of varied diameter (shown above). Great job! You are now ready to get your design cut. It is recommended to upload your file into a viewer or reupload it into your design program so that you can make sure all lines and points are present in the design, and also that there are no accidental or random lines. I find that the best universal naming scheme is “(part name)_(thickness)_(special instructions if any).” In our case, that would be “arm_4mm.” If we were to chamfer this arm, it would be named “arm_4mm_w/CH.”Ĭongratulations! You now have a part ready for cutting. It’s that easy! Now, different places have different naming conventions. Right click your sketch under the browser tab, and go down to Save As DXF. Make sure that there are no additional lines or accidental points in the sketch, and you are good to go! Finish the sketch, and rename it for easy access later. Once you have done this, all the points and lines should be green, like this. Go to constraints and choose fix/unfix, the function with the lock icon.ĭrag a selection window, covering all points and lines of your sketch. This way we can make sure that our design is protected from accidental editing. The last part of this sketch is making sure the points and lines are fixed. For unibody frames, the best orientation is aligning the arms at a 90° angle, or as close as that can be for a stretched or compressed X frame. For multipart frames with independent arms, all parts should be at a 90° angle, as seen above. The next thing we need to do is make sure the angle is correct. When the part is hidden, your sketch should look like this- blue lines with an inner profile to the arm. Using the project tool under the create toolbar, project the surface of your part, turning off the Projection Link checkbox if it’s on.
The first thing to do is to make a new, clean sketch of the part. In this demonstration, we will be using an arm and export it into a. dxf file from your 3D design in Autodesk’s Fusion360. dxf from your 3D model, so be sure to check the guides and tutorials.
CNC ZACC FPV FRAMES HOW TO
Many modeling softwares have guides for how to get a 2D. However, in the end, the file that you need to end up with is a.
CNC ZACC FPV FRAMES SOFTWARE
Depending on what software you use, the method for taking a 2D drawing from your 3D model might be different.
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