×
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

Profile correction factor

Profile correction factor

Profile correction factor

(OP)
Hi all gear people.
Hope you can help me.
I have to draw a internal splined hub
I know how to do  the profile in real involute function
Inv alfa= tan alfa - alfa [rad]
having thoot ,module and pressure angle all in Metric.
But here is the problem : the spec chart states that the
profile shall be corrected  by a -0.1124 coeficient.
How I do use such coeficient.
Thanks in advance
k281969@hotmail.com

  

Pardal

RE: Profile correction factor

pardal,
the gear correcion factor ("x" in metric standards) controls (next to some other features) the thickness of the tooth.
You can visualize it like this:
If you cut the gear using the standard metric rack (module m, addendum = m, dedendum = 1.25*m, pressure angle = alpha)
and you locate it so, that the reference line on the rack is tangent to the pitch circle of the gear (which is d=m*z;   z is no of teeth) then you create gear with tooth thickness=tooth space=1/2 of the pitch = 0.5*PI*m (it is measured as an arc on the pitch circle)
If you want thicker tooth, you move the rack out of the gear. If thinner, then you locate te rack's pitch line below the gear's pitch circle.
How much you move it is described by your "x".
You simply calculate m*x and this is the value how much the rack moved. Positive x creates thicker tooth, and vice-versa.
Hope this helps a little. Ask for more if you need!
gearguru

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! Already a Member? Login


Resources

White Paper - Strategies to Secure Connected Cars with Firewalls
White-hat hackers have demonstrated gaining remote access to dashboard functions and transmissions of connected vehicles. That makes a firewall a vital component of a multilayered approach to vehicle security as well as overall vehicle safety and reliability. Learn strategies to secure with firewalls. Download Now
White Paper - Model Based Engineering for Wire Harness Manufacturing
As complexity rises, current harness manufacturing methods are struggling to keep pace due to manual data exchanges and the inability to capture tribal knowledge. A model-based wire harness manufacturing engineering flow automates data exchange and captures tribal knowledge through design rules to help harness manufacturers improve harness quality and boost efficiency. Download Now
White Paper - What is Generative Design and Why Do You Need It?
Engineers are being asked to produce more sophisticated designs under a perfect storm of complexity, cost, and change management pressures. Generative design empowers automotive design teams to navigate this storm by employing automation, data re-use and synchronization, and framing design in the context of a full vehicle platform. Download Now
eBook - Simulation-Driven Design with SOLIDWORKS
Simulation-driven design can reduce the time and cost of product development. In this engineering.com eBook, we’ll explore how SOLIDWORKS users can access simulation-driven design through the SOLIDWORKS Simulation suite of analysis tools. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close