This is outstanding, thanks very much for the detailed response. So if I understand correctly, given that even before including friction losses in the calculations, F1 is 4370lbs and F2 is 3050 lbs, my bearings (rated at 2700lbs) each will not withstand the forces.
With that information my...
As a follow up to this post, I have done some real world testing and found the actual force to be about 3000lbs to compress this product. The self aligning bushings are rated for 2700lbs of side force each.
I have attached a new diagram showing the latest data.
The force on the piston assembly...
Cant do that, has to be perpendicular. The cammed portion of the machine only lasts for about 20 degrees of the rotation. The rest is just holding the product in the pressed state.
Yes the mid point between the 2 bearings is only about 1.1" I may increase the thickness of the plate a further...
Alright so that would be about 70ish lbs side force. - So how does that relate to my distance from the bushing? I need to multiple over the distance or something? I think what I actually need to do is take the distance from the center of the track roller to the top of the bushing divided by the...
There are 120 pistons on top and another 120 on the bottom. 1 cam follower acts upon 3 pistons at once.
The math is really all I need. How much side loading is occurring at the bushing location relative to the 300# resistance to the piston moving down.
Yes I just need to know how to calculate for simple angles. Then I can play with different paths and angles to get the job done. I have the constraints, just need the math portion.
Actually yes I can and I have been looking for solutions. I found these https://www.igus.ca/product/391?artNr=EGLM-30
Having 2 self aligning bearings eliminates the edge loading. But regardless I want to know the math behind the setup.
To anyone referencing this thread. The machine is in operation. I ended up using v- groove track rollers. I ended up needing to use a material which hardness was about double that of SS304. I used lengths of 2205 duplex flatbar then had the long edges machined to a v-shape to match that of the...
I have a machine I am designing that for all intensive descriptions, is a simple press designed to compress loose product into a puck like shape.
The press force comes from a roller bearing mounted to a piston shaft, the rod sliding through a rigid linear bearing and the piston on the end of...
Thank you all for the input - yes this is an early model and does not yet include adjustment allowance for the cam rollers. I intend on making them adjustable to not only level the load but ensure equal loading.
I am also thinking that if I double up on the rollers, I would not need to add a...
Thank you for the link, following the equation:
I come up with a minimum PSI rating of 122,000 psi - hardness of HRC 24
SS304L has a tensile strength of about 76,000 psi - hardness of HRC 1 - or HRB 82 - so its too soft for this application.
For the track then will probably look for a...