Previous in Forum: Volumetric Flow Rate   Next in Forum: we have a waste water treatment for a fishing vessel
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
5 comments
Rate Comments: Nested
vscid
Commentator

Join Date: Nov 2007
Posts: 67

Calculating Required Output Torque

11/25/2008 4:46 PM

How do you calculate the required output torque on a motor, when the motor is used to feed wire. The wire is fed between 2 rollers due to friction. In this case what do you consider as the 'load' for your torque calcs?

The distance between the motor axis and wire axis is 1/2 inch.

Thanks!
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
bhrescobar
Guru
Brazil - Member - New Member Engineering Fields - Mechanical Engineering - New Member Hobbies - RC Aircraft - New Member Hobbies - Target Shooting - New Member Hobbies - Automotive Performance - Hey there... interested in exchanging information about car performance? Hobbies - DIY Welding - New Member

Join Date: Jan 2007
Location: Porto Alegre - RS - Brazil 30deg01'39.73"S 51deg13'43.45"W
Posts: 831
Good Answers: 28
#1

Re: Calculating Required Output Torque

11/25/2008 5:35 PM

If you disconsider the effect of rollers deflection and deformation, and losses, the torque required to pull the wire would be the force in the wire times 1 roller radius, in the case, 1/2 in. Applied in one roller or divided in two, if you want.

__________________
 Humm... suspicious you are...
Register to Reply
TVP45
Guru

Join Date: Jul 2007
Posts: 4448
Good Answers: 143
#2

Re: Calculating Required Output Torque

11/25/2008 6:21 PM

Last time I did that, I just put a force sensor on the wire and read what I needed.

__________________
 "Well, I've wrestled with reality for 35 years, Doctor, and I'm happy to state I finally won out over it." Elwood P. Dowd
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
bhrescobar
Guru
Brazil - Member - New Member Engineering Fields - Mechanical Engineering - New Member Hobbies - RC Aircraft - New Member Hobbies - Target Shooting - New Member Hobbies - Automotive Performance - Hey there... interested in exchanging information about car performance? Hobbies - DIY Welding - New Member

Join Date: Jan 2007
Location: Porto Alegre - RS - Brazil 30deg01'39.73"S 51deg13'43.45"W
Posts: 831
Good Answers: 28
#3

Re: Calculating Required Output Torque

11/25/2008 7:13 PM

By the way, you do know the force in the wire, don't you?

__________________
 Humm... suspicious you are...
Register to Reply
vscid
Commentator

Join Date: Nov 2007
Posts: 67
#5
In reply to #3

Re: Calculating Required Output Torque

11/26/2008 9:25 AM

Do I do not. I guess I will have to use a force sensor or something.
Register to Reply
mashiao
Participant

Join Date: Nov 2008
Posts: 4
#4

Re: Calculating Required Output Torque

11/26/2008 2:00 AM

Depending on your system, I suppose you should also consider the force required to accelerate the wire and roller and wire storage drum if there is any.
Register to Reply
Register to Reply
Have a Different Question?
5 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

bhrescobar (2); mashiao (1); TVP45 (1); vscid (1)

Previous in Forum: Volumetric Flow Rate   Next in Forum: we have a waste water treatment for a fishing vessel

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (55 right now)
Show Members
Advertisement