The height must extend to 0. With all mentioned parameters, you can calculate the desired length of the rivet. The allowance is normally about 1. For example, two pieces of 0. The proper diameter rivet would be 3 x 0. The metal thickness is 0. See image below:. In practical, for riveting such as overhaul and repair riveting, the general rule is to use the same size and head-style used in the adjacent structure.
This will meet all the strength requirements for the joint. Related information. Atlas Copco aerospace assembly process We present here how our smart tools and solutions support the whole assembly process of aerospace industry, from drilling, fastening, tightening, riveting, etc.
Trends for aerospace industry In a future of megacities, sustainability efforts and increased global mobility, the Aerospace industry needs to double its production output while maintaining sky-high quality control. Important note: For the first rivet securing any 2 sheets of metal, the holes can be drilled separately.
You can take the top piece to the drill, then realign the pieces and mark the bottom piece with the center punch. Sometimes this is a good idea as when drilling through 2 pieces at the same time, the drill bit may walk a little before going into the bottom piece. If you can hold the 2 pieces very tightly to prevent any shifting of metal, then you can drill through both together.
This is a case by case decision. Whether you drill through one at a time or both together, you want to deburr the hole on the back side of both pieces. This accomplishes 2 things: 1. It removes any burrs left from the drilling and 2. It created a taper to the surface that will help strengthen the rivet connection. I have a bit on my bench just for this purpose. I wrapped it with tape to create a handle and protect my hand from the sharp cutting edge.
You are almost ready to set the rivet… but first you need to check the fit and trim it to size. Realign the two pieces being riveted and push a rivet through the hole. If the top sheet is copper, use the aluminum rivet. If the top sheet is aluminum, use the copper rivet.
Make sure there are no burrs or debris under the rivet head or between the sheets. Hold the pieces as close to their final position as you can. There will be some adjustment after it is set, but very little.
If you cut it too short, replace the rivet with another and cut it again. Place your rivet anvil on your hard working surface and carefully put the round rivet head in the dimple. Keep holding everything tightly together and move your hand away from the rivet area.
Using the peen side of your hammer, carefully strike the center of the rivet to flatten and spread the rivet. It takes 2 or 3 solid strikes for the copper rivet and 1or 2 for the aluminum.
Once the rivet is spread slightly, turn the hammer and strike the rivet until it is flattened close to the metal surface, usually 2 or 3 hits. Be careful and only strike the rivet. Flip the work pieces over and see how it looks. You have just set a solid round rivet.
At this point you have 2 pieces of metal held at a single riveted pivot. Adjust the pieces so they align properly and mark your second rivet hole with the center punch.
I marked both pieces on both ends so the correct place would be easy to mark. Drill your hole and deburr the back. Set your second rivet with the round head on the same side. Decide which end you want up and mark with the center punch a hole for the jumpring. Okay, the aluminum rivet looks distorted in the photo… because I used the dimple that was made for the copper rivets. The flatter aluminum aircraft rivet should have had its own dimple…. Prep your sheet metal surfaces to as close to finished as possible.
It is difficult to sand or polish around set rivets. With a huge selection of high quality products at competitive prices and with fast deliveries, we are your 1 source for solid rivets.
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