Recent content by George Zucas

It is not aluminum but steel so not that big. I have designed carts with 300T capacity though they were on flat tracks. Yeah I guess the speed being only 0.5 m/s helps a lot. If it was traveling at 2m/s the force would be 16 times higher, though still it would not be a big problem. I hesitate...

It is pretty much the same as this one: http://www.rail-cart.com/d/pic/aluminium-coil-car.jpg Though all 4 wheels can rotate like the front wheels of a regular car and are directed by the guide wheels. I cannot find the standard text which mentions the 10% rule but I am pretty sure I have...

Not banked. Flat turns.

Thanks BVU, though in that case I'm going to ask why the standard advises to take skewing forces on linear path as 10% of the vertical wheel load. Though I'll need to find the exact phrase, I'll take a look when I get home.

Dear friends, I have an application where a cart of some sort travels on a circular path. The circular direction is assured by guide wheels on the structure. Please see the attached photo which is pretty much the same as in my case. My problem is the forces on these guide wheels during...

Perfect answers, thank you all! Really helpful.

I was not able to find a better representation for the second case, now there is a better one attached. Phinds, the shape is as described in the standard, the drawing attached belongs to it. My guess is the same as you, but there is probably a reason for it.

Hello all, I was wondering, for modifying the sharp edges of a shaft, which one of the cases attached is better? Why? My guess would be the one with the radius since there are more materials remaining than the other but there should be a reason for the other case since that is also frequently...

I'll try to explain everything. I watched a perfect video for this a few weeks ago, but I can't find it now for the life of me. It would have been much easier. I'll still try to find it though. What I am trying to manufacture with this machine is basically this (it is just the groove part I am...

I am designing a new one for a couple of reasons: - The workpieces for this project are rather big, with diameters of 800 mm - 1500 milimeters. Out of capacity of the lathes we use because of the size. - The pieces will be heated, I tried to do some research and it seems pieces are heated to...

Hello, I am designing a machine that will make grooves on round objects. Not a perfect groove actually, think of a sheave, so round profile. I have the attached formula for cutting power taken from below website: http://www.iscar.com/Products.aspx/countryID/1/ProductID/32 In my case...

Thanks for trying. Do you think it is not possible to solve this problem analytically? In that case my simple solution of making the vertical bolting area strong enough to carry the beam by itself sounds logical. The only problem is that since the length is 16 meters the moments are huge even...

Thank you for your reply and sorry for the late post. The distance to the next support is 16 meters, which is the other end. There are no intermediate supports.

Hello, two 3d drawings are below. As you see the main beam has two to-be-bolted areas, and it is placed on top of another beam and bolted. I have found the support forces for the main beam and I can analyze the bolted joints (at least the vertical one), I don't really know how the load would be...

Hello PF, I am trying to analyze a a beam, connected to another beam at one side at multiple locations (bad quality drawing below). The top side of the beam extends further and sit on another beam, while the shorter lower side is directly connected to another beam. They are all bolted...