×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Worm Axial force

Worm Axial force

Worm Axial force

(OP)
Can somebody please tell me how to calculate the axial force of a worm with a given RPM, torque, and worm specifications.

RE: Worm Axial force

solitzer,

A very simple way is as follows:

F = 63025 * HP / rpm * p

Where:

F = Axial force on worm
rpm = rpm of worm
p = pitch radius of worm
HP = Motor horsepower

Haggis

RE: Worm Axial force

(OP)
Please pardon my ignorance, but would this be the output force that would be transferred from the worm to the worm gear?

RE: Worm Axial force

I don't think solitzer is quite right.  The units of his equation are in#in.  A good approximate equation is that the axial load, F = Torque/2 * 1/R * 1/(tan(LA)).  For example, if torque = 7.5 in#, pitch radius = .312" and the lead angle is 6 degrees, the axial force would be 114#.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources