New guy..with a used mill has a question.


Page 1 of 8 1234 ... LastLast
Results 1 to 12 of 85

Thread: New guy..with a used mill has a question.

  1. #1
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default New guy..with a used mill has a question.

    The BF20 L I bought is currently setup for MT2 tooling. How hard would it be to convert it to R8 tooling?

    Similar Threads:


  2. #2
    Gold Member hoss2006's Avatar
    Join Date
    Apr 2006
    Location
    United States
    Posts
    8142
    Downloads
    0
    Uploads
    0

    Default

    Not hard, just order these parts from Grizzly like diyengineer did.
    http://www.cnczone.com/forums/832436-post221.html
    plus the bearings or upgrade them to ac's.
    http://www.g0704.com/belt_drive_dvdrom.html#bearing
    Hoss

    http://www.hossmachine.info - Gosh, you've... really got some nice toys here. - Roy Batty -- http://www.g0704.com - http://www.bf20.com - http://www.g0602.com


  3. #3
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    This place has been a huge help so far. Thank you Hoss. I guess if I had just read far enough into your thread I would have found the answer.

    Just waiting for the box of servo motors and such to arrive next week. My guess is this thing belonged to member here before I got it. Already has the little butterfly impact tool changer on top.



  4. #4
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    Got my parts ordered. Thanks for the information.

    Dropped the homing switches on it last a couple nights ago and set up in Mach and soft limits set.

    Is there any reason hardware limit switches can't be wired in a normally closed loop with the Homing switches? The soft limits work unless some steps are missed or a motor stalls. The hardware limits seem like a safer setup.



  5. #5
    Gold Member hoss2006's Avatar
    Join Date
    Apr 2006
    Location
    United States
    Posts
    8142
    Downloads
    0
    Uploads
    0

    Default

    Sure, you only need one switch per axis to be both home and limits using only one input pin.
    See here. Projects
    Hoss

    http://www.hossmachine.info - Gosh, you've... really got some nice toys here. - Roy Batty -- http://www.g0704.com - http://www.bf20.com - http://www.g0602.com


  6. #6
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    I used a little different approach but I like the way you did yours. Since I haven't bought any tooling yet in anticipation of changing out the spindle I'll end up changing the way I did it on the X and Y once I can make the appropriate parts.

    I'll use the soft limits for now...



  7. #7
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    Grizzly got my parts to me pretty quick... time to order some bearings.

    So far the learning curve hasn't been too steep. The software of course makes sense to me now that I understand the concept of machine coordinates vs. work coordinates.

    Next on the list after getting the spindle replaced and broken in is to get a touch off tool wired in and rethink the home and limit switches.



  8. #8
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    I'm one step closer to making chips. While I am waiting on bearings and tooling to get here I spent the last couple long nights learning the Rhinoceros interface and RhinoCam. First part is designed, tool paths created and simulated. Next step is a test in air on the machine followed by cutting the first part.



  9. #9
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    Tooling arrived yesterday. I spent last night measuring the machine...

    Backlash
    x - .00015
    y - .0002
    z - .00005

    Column is out front to rear about .004. Unfortunately the motor mount design doesn't allow access to the column bolts so I'll have to pull it tonight to shim the column. I may setup a temporary bench to drop it on my drill press and drill in some allen head set screws to adjust the column as needed.

    If I get enough uninterrupted time I should be able to run the first part this weekend.



  10. #10
    Registered Mad Welder's Avatar
    Join Date
    Jun 2011
    Location
    Ireland
    Posts
    914
    Downloads
    0
    Uploads
    0

    Thumbs up

    Yeppee another BF20 thread......Hi there Kenny welcome to CNCzone....post loads and loads of photos and especially the R8 conversion I'm probably going to follow you and others and swap out my MT2 for an R8 or ISO30 but at the moment I'm trying to see if I can use my MT2.....

    Eoin


  11. #11
    Registered Kenny Duval's Avatar
    Join Date
    Jan 2013
    Location
    United Stated
    Posts
    455
    Downloads
    0
    Uploads
    0

    Default

    Hell...I'm so busy trying to fit all this stuff in my little pea brain that I forget to take pictures. Not that everyone hasn't seen them before...

    The R8 swap was dead simple. I ran the mill for a couple hours tonight trying to get used to the process and it never ran hotter than 110 at the motor.

    I'll stick to little blurbs of progress. I made chips with it tonight. Still have some things to work out but it cuts a pretty good circular pocket. It was only .0001 out so the machine is pretty close. I think I need to go back a measure the backlash in the X axis again as I think that's where it is.

    A new PC is definitely a must at this point as the old P4 IBM that came with it is just too slow when running the MACH 3 wizards. Plus I just hate having n XP machine around anymore.



  12. #12
    Registered ny_racer_xxx's Avatar
    Join Date
    Mar 2012
    Location
    USA
    Posts
    193
    Downloads
    0
    Uploads
    0

    Default

    Man, you scored a used BF20 with a CNC conversion? And in the USA!!!



Page 1 of 8 1234 ... LastLast

Posting Permissions

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


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

New guy..with a used mill has a question.
New guy..with a used mill has a question.