Recent content by Blad9

What dimensions are not identified? Do you see the picture?

I would like to attach bearings on a shaft, see: https://www.physicsforums.com/showthread.php?p=3856547#post3856547 Therefore I would like to calculate the axial and radial force on the shaft, so I can select the right bearings. The picture looks a as following...

Yes, true. Didn't think about that. But how should I realize that?

I have a shaft, which I would like to rotate 90 degrees to one side and then 90 degrees back to the other side and so forth. How should I attach the bearings to this shaft? I was thinking to do it as shown in this image: Two slide bearings, one on the top and one on the bottom so the shaft...

The load will be about 30 kg on every item. Normal environment. During the ingoing movement there will be nothing on the items, so no load. Then a load will be putted on them and a few seconds afterwards they will have to move outwards again. But how should I assemble those motor driven...

True, in this picture. But it's just a quick drawing I made to explain the situation. Basically it's like this, to make it more clear: Any tips guys?

Thanks for the help guys!

I learned that Ff = μ x Fn. But now that we need Fn we have to Fn = Ff / μ, I get it. So that means: Force = 1500 / friction coefficient Force = 1500 / 0,5 Force = 3000N I wanted to use 2 cylinders to pinch the boxes like drawn in the picture in the first post, meaning I could divide...

Ok, that would give me the following: With 5 boxes Fn in the x-direction: Fn = F x friction coefficient plate >> box Fn = 300 x 0,4 Fn = 120N 3 inner boxes of the 5: Weight 3 boxes is 18 kg Fn = F x friction coefficient box >> box Fn = 180 x 0,5 Fn = 90N If only those...

But there are different boxes and different types of cardboard used for the boxes, which causes different friction coefficients. So far I found out the friction coefficient between the used cardboard on cardboard differs from μs =0,464 to 0,673, that's why i wanted to use 0,5 for the...

I can't use the vertical ram, because I would like to use this method to pinch the boxes. Hold them in the air for a while and then unpinch them again. So I want the boxes to be in the air. Yes basically that is what I need to know. What sideways pressure do I need to stop the boxes from...

If you have some relatively small boxes next to each other you can pinch them with your fingers and lift them vertically. I would like to do this with big boxes, but I don’t know how to calculate certain things. I would like to make a frame with 4 plates on it which pressure the boxes...

The four items will be in position 1. They will have to be able to move 180 degrees to position 2 and wait. There will be a load on them, after that they will move back from position 2 to position 1 while their still is a load on the items. Picture:

I’m not sure if this is the right place to post, I hope it is. I’m a mechanical student and don’t have a lot of experience on how to move objects (yet). For a project I have to move 4 items which are attached on shafts. I would like to be able to move those items 180 degrees inside and back...