525,379 active members*
2,511 visitors online*
Register for free
Login
IndustryArena Forum > GENERAL MANUFACTURING PROCESSES > MILLING > What might be the reason of this CNC milling Failure
Results 1 to 5 of 5
  1. #1

    Join Date
    Jul 2020
    Posts
    3

    What might be the reason of this CNC milling Failure

    We heard a sound, that see this defect on our part. The working tool is 5 carbide inserts, Ø50mm side cutter (Face mill)
    depth of cut:2mm
    Feed is variable arround 400mm/min-2000mm/min
    Spindle Speed = 4200 rev/min
    I run the same nc code yesterday and everything was fine.
    I wonder the reason of this failure on this image attached to the post.
    Chip stuck, unstable stock or bad machine
    .The code continued a bit after this failure just fine.

  2. #2
    Member
    Join Date
    Jan 2005
    Posts
    11275

    Re: What might be the reason of this CNC milling Failure

    Quote Originally Posted by Arin93 View Post
    We heard a sound, that see this defect on our part. The working tool is 5 carbide inserts, Ø50mm side cutter (Face mill)
    depth of cut:2mm
    Feed is variable arround 400mm/min-2000mm/min
    Spindle Speed = 4200 rev/min
    I run the same nc code yesterday and everything was fine.
    I wonder the reason of this failure on this image attached to the post.
    Chip stuck, unstable stock or bad machine
    .The code continued a bit after this failure just fine.
    Show a photo of the cutter it looks like a insert came loose
    Mactec54

  3. #3

    Join Date
    Jul 2020
    Posts
    3

    Photo of cutter

    Here it is. What I inspect is that the inserts seems fine.
    Your saying is very logical to me,but our operator says that if that was the case the insert would break.

  4. #4
    Member
    Join Date
    Jan 2005
    Posts
    11275

    Re: Photo of cutter

    Quote Originally Posted by Arin93 View Post
    Here it is. What I inspect is that the inserts seems fine.
    Your saying is very logical to me, but our operator says that if that was the case the insert would break.
    No the insert would not break,

    The inserts may have got dull and the material could then heat up and pull up into the cutter how thick is that material, how much experience does the person doing the job have

    That is not a good cutter to be using for a job like that
    Mactec54

  5. #5

    Join Date
    Jul 2020
    Posts
    3

    Re: What might be the reason of this CNC milling Failure

    I understand.
    The material is Cu-ETP (very small amount of other contents, can be consider as pure copper) The depth of cut ap was 2mm : With stepover of %12 (ae=50mm*0.12=6mm)
    Operator is still young,he has almost 9 years of experience but in a limited range ( mostly holes and breaking chamfers on 6-15mm materials.) I am in my first year.We are still improving.
    We don't have large range of cutting tool in our closet, looking forward to get a decent stack.

    So thank you very much for the explanation. I think I understood.

Similar Threads

  1. Any reason for no reply's?
    By Buchananesq in forum Fanuc
    Replies: 0
    Last Post: 06-01-2015, 12:10 AM
  2. For some reason G20 is Centimetres
    By VanCnc in forum Fanuc
    Replies: 9
    Last Post: 04-10-2009, 03:12 AM
  3. TL2 Beeps for no reason
    By Peter Gibbs in forum Haas Lathes
    Replies: 11
    Last Post: 02-09-2008, 10:17 PM
  4. I want one and now I have a reason.
    By rustranch in forum DIY CNC Router Table Machines
    Replies: 2
    Last Post: 10-10-2003, 04:58 AM
  5. CNC for what reason?
    By WallCrawler in forum Community Club House
    Replies: 6
    Last Post: 06-17-2003, 05:30 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
  •