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IndustryArena Forum > MetalWorking Machines > Turning Machines > Miyano BNC 34T - B turret issues
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  1. #1
    Join Date
    Jan 2013
    Posts
    126

    Miyano BNC 34T - B turret issues

    I am doing side work with a local small shop. I am working on getting a Miyano BNC 34T programmed and running a simple part. This machine is unfamiliar to me and there in no one there that knows anything about it. My issue is end of the part is turned down to .1065 the first .405 so I am trying to turn that close to the collet and then bump it out to finish the rest of the part. When it goes to call up the tool to bump it our I get a 507 p/s alarm which I know it an overtravel alarm. I have tried changing the tool offset (T72) I have tried changing the B approach dimension. I am kinda stuck. Any help would be greatly appreciated.

    Here is the program

    N3
    G101
    M62
    T72
    G0 B.03
    M90
    G100
    M40
    M90
    /M17
    G4P889
    G101
    G0 B2.4
    M90
    G100
    M40
    M90
    M18
    G4P1000
    G101
    G0 B2.416
    T70
    M90
    G100
    M40
    M90
    M1

  2. #2
    Join Date
    Feb 2020
    Posts
    4

    Re: Miyano BNC 34T - B turret issues

    Quote Originally Posted by jreynolds5 View Post
    I am doing side work with a local small shop. I am working on getting a Miyano BNC 34T programmed and running a simple part. This machine is unfamiliar to me and there in no one there that knows anything about it. My issue is end of the part is turned down to .1065 the first .405 so I am trying to turn that close to the collet and then bump it out to finish the rest of the part. When it goes to call up the tool to bump it our I get a 507 p/s alarm which I know it an overtravel alarm. I have tried changing the tool offset (T72) I have tried changing the B approach dimension. I am kinda stuck. Any help would be greatly appreciated.

    Here is the program

    N3
    G101
    M62
    T72
    G0 B.03
    M90
    G100
    M40
    M90
    /M17
    G4P889
    G101
    G0 B2.4
    M90
    G100
    M40
    M90
    M18
    G4P1000
    G101
    G0 B2.416
    T70
    M90
    G100
    M40
    M90
    M1



    Note bar stop datum front of component = B0
    face bar at the first desired position
    bring bar stop in b axis to touch this face and lock in position
    enter the screen position into b geometery this is now B 0 datum
    make sure that you have enough travel on b axis for the movment you require
    i think the b axis has just over 9 inches of stroke
    note b is moving in minus towards collet for feed out of bar and plus away from collet for component length
    hope this helps

    M161(BARSTOP)
    G101
    T71
    G0B-4.8(note rapid movment towards collet just in front of the last part off position)
    M17
    G0B0.0(position front of bar after feed out or length of first feed)
    M18
    G4P500
    G0B4.0
    T70
    M190
    G100
    M140
    M190
    M01

    M161(BAR STOP 2ND CALL)
    G101
    T71
    G0B.1(rapid to just in front of part)
    M17
    G0B2.205(finished length)
    M18
    G4P1000
    G0B4.2
    T70
    M190
    G100
    M140
    M190
    M01

  3. #3
    Join Date
    Jan 2013
    Posts
    126

    Re: Miyano BNC 34T - B turret issues

    Thanks for the reply. I cant remember what I did I did get it working a few days after this post. Then a few days later the backup battery died and wiped the memory lol The joys of doing side work on unmaintained machines.

  4. #4
    Join Date
    Jul 2021
    Posts
    3

    Re: Miyano BNC 34T - B turret issues

    Thanks for the detailed explanation on how to fix this error, I found and solved my problem when installing according to these parameters:
    T70
    M190
    G100
    M140
    M190
    M01
    #2048 cupcakes

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