Tru-Trace Lathe Tracing Attachment

Discussion in 'QUESTIONS & ANSWERS (Get Help Fast Here!)' started by Nels, Aug 7, 2011.

  1. Nels

    Nels Founder Staff Member Administrator

    Likes Received:
    101
    Trophy Points:
    63
    Location:
    Queens, NY
    City:
    Queens
    State:
    New York

    Attached Files:

    Last edited by a moderator: Nov 19, 2011
  2. Tony Wells

    Tony Wells Administrator Staff Member Administrator

    Likes Received:
    17,775
    Trophy Points:
    113
    Location:
    Tyler, Texas
    City:
    Tyler
    State:
    Texas
    They are used on lathes to cut profiles and contours that would be difficult or near impossible manually. A flat template is created that mounts on it and contact is maintained on the template by a tracer pin that is connected to a hydraulic valve. The hydraulics control the X axis of the lathe, so that when you engage the Z axis feed, the cutting tool makes a cut that matches the template. The templates are a little tricky to make, as you have to allow for the contact pin diameter.

    I imagine that they aren't all that popular nowadays, with CNC all over the place, but at one time, production shops used them extensively. I ran one on an American Pacemaker for a while. Kind of boring after a few days of watching it. They don't thread, but turning and boring work they do pretty good.
     
  3. george wilson

    george wilson Global Moderator Staff Member Supporter Active Member

    Likes Received:
    194
    Trophy Points:
    63
    City:
    Williamsburg
    State:
    Virginia
    I have a little Lehigh(sp?) mechanical tracing attachment I've used for many years. It just is a hardened steel block with a built in linear bearing that moves the tool in and out. A follower stylus moves against a template you make from 1/8" steel flat stock.

    It has always worked just fine.
     
  4. 4gsr

    4gsr Global Moderator Staff Member Supporter Active Member

    Likes Received:
    97
    Trophy Points:
    48
    Location:
    Victoria, Texas
    City:
    Victoria
    State:
    Texas
    I don't claim to be an expert at this stuff, but that one on ebone has a missing piece to it. it's missing the template holder that holds your template.
    I threw away two tracer valves when I cleaned out my Dad's old shop when we sold the old homestead. :crying: years back.

    Ken
     
  5. Glmphoto

    Glmphoto Active User Active Member

    Likes Received:
    0
    Trophy Points:
    16
    City:
    Portage
    State:
    Indiana
    Can we get a few photos of that unit?
     
  6. tarmo120

    tarmo120 Active User Active Member

    Likes Received:
    0
    Trophy Points:
    16
    City:
    Tallinn
    State:
    Outside US / Canada
    I believe this is the same attachment that Keith Fenner is using on his big lathe.
    He has quite a few videos on how it works and shows.
     

Share This Page