1. Hello and Welcome to The Quality Forum Online...Continuing in the spirit of People Helping People !
    Dismiss Notice
Dismiss Notice
You must be a registered member in order to post messages and view/download attached files in this forum.
Click here to register.

What is UPR (Undulations Per Revolution) in Roundness

Discussion in 'GD&T Standards and Practices - ASME & ISO' started by shankar Jadhav, Oct 17, 2015.

  1. shankar Jadhav

    shankar Jadhav Member

    Joined:
    Sep 5, 2015
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Can anybody explain UPR (Undulation per revolution) in roundness and what standard exists for same.
     
  2. Eric Twiname

    Eric Twiname Well-Known Member

    Joined:
    Jul 31, 2015
    Messages:
    197
    Likes Received:
    155
    Trophy Points:
    42
    Location:
    Northeast USA
    Howdy shankar,

    Never heard of it before but was curious...and found this: http://digitalmetrology.com/mean-roundness/

    I thought it was pretty informative, though not a "standard". I hope it helps...

    Perhaps others specifically in the metrology field might comment..
     
  3. Emmyd

    Emmyd Member

    Joined:
    Jul 31, 2015
    Messages:
    38
    Likes Received:
    37
    Trophy Points:
    17
    Location:
    Tennessee

Share This Page