Math question for engineers

[b*saint]

Need someone to steer me in the right direction. How do I figure the power to move a 100 pound object from 0 to 2000 in/min in 1 second sitting on and attached to linear bearings with a friction coefficient of practically 0? What is my equation?

[F34R]

Does your wife weight 105?

[b*saint]

No I making a cantilever machine for something

[Hick]

No I making a cantilever machine for something

yeah?

i just got done with my senior design project. Cantilever beam with an applied load reading strain through a DAQ. Theres a lot of little shit in there to make it read without bouncing.

[b*saint]

Yea I dont know the mechanical engineering end of it. I need a lot of help with it. The motion control is all me.

[FredK]

Are you trying to size a motor?

[b*saint]

Mostly LM guides and ball screw size.

There is 3 to 5 different motors depending on what I go with for design, even tho it is only a 2D machine.

[FredK]

Yeah, I was on a small team that designed a pump a few years back. I talked to the people at Automation Solutions, now i-automation.com, to ensure my motor and actuator selection made sense. They have a local office in Beverly.

This book is helpful:

http://ftp.cnchungary.com/Varsanyi_Peter/CNC%20vezerles%20-%20szervoval/Guide_to_Servo_Motor_Sizing.pdf

[Conki]

wrong.
I'm drunk.
You need to look up a couple equations.
I'm going snowboarding.
Olololololol

[b*saint]

Fred I guess you're right. I also need to size motors.

A motor needs to overcome the static weight of the arm. So if the static weight it 45 kg I need to calculate how much torque to move it linearly via a ball screw in Nm.

[Conki]

wrong.
I'm drunk.
You need to look up a couple equations.
I'm going snowboarding.
Olololololol

:d

[Philo]

Force = (roughly) 38.42 N

M= 45.36kg
Vi=0
Vo-=.847m/s
t=1sec
a=.847m/s^2

F=Ma
38.42N = 45.36x.847

Are you sure that friction is 0? Practically 0 is not 0.
Is the direction of the force and object linear?

[FredK]

2000 in/min = 33 in/s
33 in/s = .84 m/s

F = 38 N
P = Fv = 38N * .84 m/s = 32 W

edit: I think the key is to match load inertia with linear system inertia.

[b*saint]

Force = (roughly) 38.42 N

M= 45.36kg
Vi=0
Vo-=.847m/s
t=1sec
a=.847m/s^2

F=Ma
38.42N = 45.36x.847

Are you sure that friction is 0? Practically 0 is not 0.
Is the direction of the force and object linear?

The friction is 0.0008. And yes.

[b*saint]

Ok so I did a weight check. My gantry is 130 pounds bare. Probably another 50 pounds once I attach the lm guides, linear stepper motor, hardstops, servovalve, and Z axis plate w/head.