submit to reddit


Please Let Me Know How Much You Like This (1 is very Bad - 10 is Excellent)




Screw mechanism 1




The mechanism consists of 2 movable links and 3 screw joints. In 1 rev of the blue crank:

The nut’s displacement s = h3.(h1-h2)/(h3-h2) The nut’s rotation φ = (h1-h2)/(h3-h2) revs.

h1: pitch of the screw joint of the blue screw and the base.

h2: pitch of the screw joint of the blue screw and the green nut. h3: pitch of the screw joint of the green nut and the base.

h1, h2, h3 carry negative sign in case of left-handed thread and vice-versa. For this case, h1 = 2, h2 = 3 and h3 = 4 so s = -4 φ = -1

Wanted s and φ values can be obtained by combination of appropriate h1, h2, h3 and the thread direction.



Add a comment or brief description of this mechanism in your language.


(c) www.mechanisims.co All rights reserved.