545,499 active members*
2,069 visitors online*
Register for free
Login
IndustryArena Forum > MetalWorking > General MetalWork Discussion > 3D SURFACING, YOUR BEST GUESS AT THIS PROB
Results 1 to 5 of 5
  1. #1

    Join Date
    Jul 2021
    Posts
    2

    Question 3D SURFACING, YOUR BEST GUESS AT THIS PROB

    So, I have successfully surfaced this with a 1/16th ball mill a couple times. All the other times is comes out like this photo attached. Really fuzzy and raspy on the flats.

    I am running it at MAX rpm for the mill (11,500. I know 20k or 30k would be better but aint got it.) and at about .0005 IPT chipload and .0035" stepover, attempted with both scallop and raster(parallel) toolpaths. Tried with both 2 and 4 flute endmills and only had success a couple times.

    A few questions I have are, given the 3d shapes, how much should I leave for the ball? I've been trying .003 before the final pass but should I do more? .010 or .012? Im stumped... Tried everything.. Maybe more chipload?

  2. #2
    Gold Member
    Join Date
    Apr 2004
    Posts
    5357

    Re: 3D SURFACING, YOUR BEST GUESS AT THIS PROB

    It looks like you've chipped the end of your ball endmill.
    Andrew Werby
    Website

  3. #3
    Registered
    Join Date
    Dec 2003
    Posts
    948

    Re: 3D SURFACING, YOUR BEST GUESS AT THIS PROB

    How far was he tool projecting from the collet?

  4. #4

    Join Date
    Jul 2021
    Posts
    2

    Re: 3D SURFACING, YOUR BEST GUESS AT THIS PROB

    Well.. We're using a brand new ball mill every single time....

    The tool is choked up super close to the collet and its using a REGO PG tool holder with almost zero runout

  5. #5
    Registered
    Join Date
    Mar 2009
    Posts
    1556

    Re: 3D SURFACING, YOUR BEST GUESS AT THIS PROB

    I would do an experiment.
    Anyway it is long story, requires thorough investigation.
    I would machine a piece of surface which goes ( always ? ) good, trying to destabilize the table with hand.
    It would be easy indication if table is stable. The next - almost the same destabilization attempt - headstock.
    It shows if headstock is stable.
    And, of course, I would check static tool runout. Must be less than 1 micron.
    The next - a bit bigger ball tool tip.
    These experiments will provide many information for discussions.

Similar Threads

  1. No one could guess so far
    By TomZ85 in forum General Laser Engraving / Cutting Machine Discussion
    Replies: 13
    Last Post: 12-11-2018, 04:00 AM
  2. Riddle me this, can anybody guess what this is?
    By X7racer in forum Community Club House
    Replies: 9
    Last Post: 05-01-2013, 03:36 PM
  3. I guess this forum is dead
    By bret4 in forum Syil Products
    Replies: 1
    Last Post: 04-27-2013, 02:50 AM
  4. Not sure where to post but guess what came today?
    By alexccmeister in forum Benchtop Machines
    Replies: 7
    Last Post: 11-16-2008, 02:36 AM
  5. GUESS: Home Limit or Both
    By Mr.Chips in forum General CNC Machine Related Electronics
    Replies: 8
    Last Post: 03-20-2008, 05:03 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •