mechanism - cam

by david18
Tags: mechanism
david18 is offline
Mar25-07, 07:54 AM
P: 50
Hi, im creating a mechanism that needs to be able to lift a plank of wood up and down arpund a pivot. However, there isn't enough space below the wood to enable me to place a cam. So i thought I might be able to place a cam above the wood - although this would mean the follower would have no gravity to keep in contact with the cam, if I placed a spring under the wood it should spring back up.

I'd like to know if this idea is any good and if its been used before, or if there are any mechanisms that would make much more sense in this case.
Attached Thumbnails
Phys.Org News Partner Science news on
Internet co-creator Cerf debunks 'myth' that US runs it
Astronomical forensics uncover planetary disks in Hubble archive
Solar-powered two-seat Sunseeker airplane has progress report
berkeman is offline
Mar26-07, 10:10 AM
berkeman's Avatar
P: 39,723
Seems like it could work, but you could also make the contact point on the top surface of the cam, and suspend the plank from the cam follower.
FredGarvin is offline
Mar28-07, 06:10 AM
Sci Advisor
FredGarvin's Avatar
P: 5,095
Do you have to use a follower arrangement? Why not simply attach the follower arm to the outer portion of the cam and forget about the spring?

Register to reply

Related Discussions
higgs mechanism High Energy, Nuclear, Particle Physics 0
Question about E2 mechanism. Biology, Chemistry & Other Homework 4
Reaction mechanism Biology, Chemistry & Other Homework 0
the mechanism of a fan General Physics 3
Higgs mechanism Quantum Physics 1