Welcome to Our Community

Some features disabled for guests. Register Today.

Pocket milling climb and conventional

Discussion in 'General Talk' started by kajlo30, Jul 23, 2023.

  1. kajlo30

    kajlo30 New
    Builder

    Joined:
    Jul 3, 2022
    Messages:
    37
    Likes Received:
    5
    Hello ppl.All my pockets came out wrong(size -0.8/-1mm on x/y same)when i use climb milling.But when using conventional milling the dimensions are correct.Does anyone know something about this?Thanks.
     
  2. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Aug 6, 2013
    Messages:
    3,338
    Likes Received:
    1,866
    Think about how the tool is rotating and which direction the tool is pushed by the cutting force when it is cutting.
    If the tool is cutting away from you (Y+), the cutting edge on the 'front' (the edge cutting fresh material) is moving left to right, trying to push the material right.
    Thus the tool experiences a reaction and is being pushed left.

    so, if there is any play in the system cutting clockwise around a part will tend to leave it a little large, and cutting anticlockwise will tend to leave it a little small.
    If you cut a square and it comes out different dimensions in X and Y it means you have more play in one direction than the other.

    your finding of coming out on-size it probably because your tool is not quite the size you put into the CAM and the offset happens to compensate for the backlash.

    more explanation at
     
    kajlo30 likes this.
  3. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Aug 6, 2013
    Messages:
    3,338
    Likes Received:
    1,866
    oops, this is the video i meant to link to
     
  4. kajlo30

    kajlo30 New
    Builder

    Joined:
    Jul 3, 2022
    Messages:
    37
    Likes Received:
    5
    Thanks for the info!
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice