Hi Thomas!
Thanks for you suggestions. To explaing little bit more. We have a part that is pressed or deep drawned and cut with knives (all in z-axis in the pictures) to form final shape from flat sheet metal. That is an individual part presented in the middle picture in OP (just without...
OK, I understand that. I have to create corner from 180 to 270 degrees (in my case) since there is a mechanical operation of pressing involved. Maybe I have to define the problem one more time.
The first image is sketch for representation. The second image is basically first stage from tool...
Dear all!
I am practically new at using NX. I am using NX11. Currently I am dealing with a problem preparing deformable part for adding to ASSY. I know that you can't assign features such as edge blend to deformed part. I am hoping to get some advice on preparing the part to suit the final...
There is slot on the right shaft up to the head and the shaft in fixed when tightening at the right end which sticks out. This is just simplifies sketch. But the sliding is between friction discs.
Well the needed axial force is calculated from the final eq. for torque capacity in the link provided in the first post. I don't even know if I used this equation correctly.
T=(2/3)*k*((r1^3-r2^3)/(r1^2-r2^2))*Fa
The data:
d1=0,09m
d2=0,061m
T=600Nm - the torque at which I want my clutch not to...
Dear fellow engineers!
I have designed my own (safety) clutch for some special machine. I used steel disc in the middle and on each side a ferod(some friction material) plated discs. So I was assuming it is single plated clutch. The two side discs are bolt tightened to middle disc with maedler...
Yes, I know the tension forces on each side of the belt - that is where I get static friction force between the left pair of wheels. I also know the stiffness of the bearing and the shaft (and also stiffness of the rear mounting wall) - and I have concluded that the deformation appears on the...
Yes, belt tension force provides enough friction force between left pair of wheels, but it is not directly important to my described problem. Belt is however providing force in -z and +y direction - it is not visible from the last figure (assuming -z direction is pointing perpendicularly in the...
Hello again!
I am fully aware that my understanding of this problem is not particularly good. But I will describe the problem a little more in details. On the lower figure there is the same composition of steel wheel (gear 1) and rubber wheel (gear 2) just as it is in the figure in the first...
In our particular case these wheels are actually friction gears not intended for a specifically hard job. One of the wheels keep climbing forward (in x-direction) and hitting other components in assembly producing noise (fatique) Therefore I would like to calculate the produced force between...
Dear fellow engineers!
I have a question for you all about some (hopefully) basic theory about drives. The problem is visualized in the lower figure and will describe the circumstances. The round parts in the figure are wheels. One of them is made of steel and the other is made of rubber - both...
Dear fellow engineers!
I have a question about creating correct model for FEM structural analysis of thin plate that has one dimension significantly smaller than other two. Approx. dimensions of plate (X)800 x (Y)600 x (Z)(+-30) mm and thickness is 0.8 mm. Plate has cuts/holes on it on multiple...
@dvd
We cannot get axes to become parallel as I said after 20000000 spins there is always an angle. That is why I thought this may be the the reason for sliding our bigger pulley in the negative x direction shown in the picture.
There is of course some other possible causes that my result in...
@berkshire
Thank you for explaining this problem to me. You answered my basic question.
I guess the problem for me still remains, but I got rid of one of the possible causes for pulley movement.
@jlnsol
Ok, then I am completely lost... Why do we use crowned pulleys then? Isnt't the principle the same than with my bigger pulley that is not crowned? Always trying to put the tension in the middle and get to the top of the cone - which I dont have in my case, but you can look at it like...
This is an actual and quite delicate problem. The pulleys will definitely stay the same, because the bigger pulley is wide enough to overcome the problem of belt slipping of. The problem that bothers me that it seems like the bigger pulley is getting dragged/pushed in the negative x direction on...
Dear fellow engineers!
I have a simple question about operating principle of flat belt and pulley that has inclined pulley. Visualization on the picture. The smaller(lower) pulley is driving pulley and the bigger one is driven. The axis of the bigger pulley gets inclined for few degrees because...
