Torque Required to move a System
Torque Required to move a System
(OP)
Morning!
I have a problem I can't crack..
I am trying to work out the torque required to get a system moving from its static position.
The system consists of various gearboxes.
Practically I could fit a bar to one of the shafts and apply load until it turns and work it out this way but for now the system isn't build so I need to way of doing this by calculation.
Any ideas?
Thanks
I have a problem I can't crack..
I am trying to work out the torque required to get a system moving from its static position.
The system consists of various gearboxes.
Practically I could fit a bar to one of the shafts and apply load until it turns and work it out this way but for now the system isn't build so I need to way of doing this by calculation.
Any ideas?
Thanks





RE: Torque Required to move a System
The practical method is to analyze your final load (rotational & translational motions) for peak torque. Peak torque = T-accel + T-stiction + T-friction + T-gravity + T-runningTorque + T-aDozenOtherThings. Then work it back through the gear ratios of your gear train for the required input torque. Add a factor of safety for fudge ("torque is cheap, use plenty of it"), then get on with more important things.
I always recommend that one should websearch & download the "Smart Motion Cheatsheet" in PDF form, also to peruse the engineering section of any of the available gearmotor manufacturer's catalogs. SEW-Eurodrive's English-language Engineering Guide (from their German site, not the US site) used to be one of the most rigorous analysis methods I've ever seen. Not sure this can be downloaded anymore, though. Could check out the others like Dodge, Falk, Nord, etc.
TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering
www.bluetechnik.com
RE: Torque Required to move a System
RE: Torque Required to move a System
RE: Torque Required to move a System
JBoggs:
The motor I'm using is quite powerful and will easily overcome the torque of the system and will become quite unmanageable, what I need to do is work out the torque required to start the current system so that I can select a suitable dynamometer to increase the torque of the system to a controllable level. Hope that makes sense?!
RE: Torque Required to move a System
I'm puzzled.
If the system isn't built, why do you need all those gearboxes?
Maybe one may suffice.
RE: Torque Required to move a System