Recent content by loquillo

If you have the RPM of one of the shafts you can reduce or increase the speed of the output shaft by playing with the diameters of the gears. After you establis what kind of motor you are going to use and how fast you want your outut to be, you just got to play with the gear ratio until you...

The gear reduction would do the trick. After you calculate the speed you want the load to move (work output) and the motor parameter you decided to use you just have to play with the gearbox until you converge with the inputs and outputs. For that you should know a little about gear reduction...

Check for manufacturing processes books or references.

I gathered data for different coefs of friction for brake pads and it was about the same # that I obtained experimentally (about 0.4). Therefore comparing both high speed systems we can conclude that the speed doesn't affect the coef. at all. (correction for the statement above)

After comparing the experimental slide obtained in the car drop test with the brake slide model, the coefficient of friction obtained experimentally apparently was to high. The clamping force and the speed affects the coef of frict disregard of the surface finish of the sliding surface.

How is the coef of friction affected when we are dealing with high speed sliding and we compare it to low speed experimentally determined coefs of friction? I know it should decrease, but is the difference between both values negligible or enough to change the whole problem? Also at high speeds...

No, the rail does not get polished at all.

I can not visualize your problem. Is it vert or hor, how is it supported, is it a distributed load or a localized load. There are many solutions to your problem depending on the arrangement of the bolt/plate system. I think that most of the load can be ditributed between 2 bolts but the third...

I'm modeling a safety brake for an elevator and is kind of difficult to measure the coefficient in such a thight area. The rail contains brown rust and the approximate load applied by the brakes would be 10,000 lbs. I have search a couple of approximations but I don't know how much does the rust...