[lovemachinez]

Hi All, I need help to calculate a required torque for motor in the rack and pinion system.
My application is look like the picture below. It is a rack and pinion system which the motor is used for moving the carrier in x axis. and the force load is in y axis.

I have known that to calculate the torque is just use T=F x r but in this case, I dont know how to calculate F.
Please help. Thank you in advance.

[ger21]

How much weight are you moving, and how fast do you want to accelerate?

[lovemachinez]

load 5kg and i want it move 1meter in 10second

thank you

[fizzissist]

You're confusing torque and horsepower. You're saying you want to move a 5kg load 1/10meter in 1 second... That's force vs distance vs time, whereas torque is force.
ie: You want to torque a bolt to 2.2ft-lbs.... you put a force of 2.2lbs at a distance of 1ft on a bolt and you've got it, even if it takes a week. If you want to lift 550lbs 1ft in 1 second, you'd need 1 horsepower, so you can see that's the rate of change.

[ger21]

You also need to provide the pinion pitch diameter, and whether there's a gear reduction or not.

[lovemachinez]

Ok, I am a bit confusing sorry all. also bad in physics T__T

let say I want to move from motionless to 100mm/s. so the acceleration = (100-0)/1 = 100mm/s2 right? please educate me.

and my pinion diameter = 20mm. Weight in Y-axis is 5Kg.

so how can I calculate the F along X-axis?


more question please. The module of rack&pinion how to choose it? the bigger number of module means the bigger capacity of load. am i right?
Does the bigger no. module will reduce the resolution of the system?


Thank you ger21, fizzissist. appreciated you all.