Sliding gate Design

[ewomach]

hi everyone,

i have slidig gate that i need to install a drive motor. the gate weight is 1500 kg and has 5 v-grove wheels. the dia. of the wheels are 160 mm. We already bought a motor for it but i am concerned about if that motor will be sufficient for this gate. i am trying to calculate the force required to accelarte the gate.
please see my calculations below and let me know if i am on the right track.

Rolling friction (fr) = C rr x Nf = 0.0005 x 15000 N = 7.5N
F - fr = m x a = 1500kg x 0.196m/s^2
F = 294N + 7.5N = 36.9N required to accelerate the gate

Motor Properties
Torque force = 1300N
Output revolution = 52 rpm
Pinion = Z18
Rated Power = 650W


I will be glad if someone can help me.

 

[tygerdawg]

See my other post

http://www.eng-tips.com/viewthread.cfm?qid=239704&page=1

Situation is similar. You're not accounting for all inertias that you must accelerate, and it doesn't appear that you are accounting for the acceleration / deceleration ramp times.

Websearch & download PDF file "Smart Motion Cheat Sheet" for all the usual formulas.

TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering

http://www.bluetechnik.com