×
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

An anti-backlash gear with module 3

An anti-backlash gear with module 3

An anti-backlash gear with module 3

(OP)
I am working on a design requiring zero backlash in my set-up. I have an anti-backlash gear that rotates an absolute encoder. This anti-backlash gear should have module = 3 and 120 pitch diameter. I haven't had luck finding an anti-backlash gear with that module. All anti-backlash gears I've found have module less than 1.
In the case I have to detail this gear what information I have to put on the detail drawing? An example of detail drawing of an anti-backlash gear would be great. Thanks in advance.

SolidNeutron
 

RE: An anti-backlash gear with module 3

Try cobbling up a set with two regular gears slightly offset with 2-3 elastomer pins between them. One gear should have the drive feature and the other a clearance hole.

Plastic versions can be made with molded-in spring fingers.

RE: An anti-backlash gear with module 3

You can add 1 module gear fixed on the same axis as the 3 module gear and mesh a 1 module anti-backlash gear to the 1 module gear to rotate the encoder.

RE: An anti-backlash gear with module 3

Other posibility is to add an anty roll-back bearing to a gear of the same diameter on the same axle, and position it such that the only thing it can do is rotate against the normal direction of rotation. If you install this interlocking against the other gear, the anti-roll back bearing will take away all backlash. Its torque rating is limiting the amount of torque that can be transmitted, but it is very simpla, and effective.

Regards,


Pekelder

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