Bridgeport j head type mill drive system change opinions
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  1. #1
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    Default Bridgeport j head type mill drive system change opinions

    Hi,

    I have a Bridgeport j head clone milling machine about 5 years. When i bought that machine it's high speed gear was not working beacuse of a broken teeth. I have weld a teeth with tig weld and it worked and still working ( a little bit loud gear sound but okay).

    I don't know how much time it will keep working but i have devoloped a plan to improve my j head clone. To simply the expression i will write down the plan step by step.

    - i will switch the sytem on step pulley (low speed) system permanently.
    - i will swtich 1500 rpm 2 hp motor with a 3000 rpm 3 hp motor
    - i will add an sensorless vector drive

    i want to keep pulleys because of their torque increasement. But my highest milling speed will be around 600 rpm with this setup. I don't want too much speed but at least 2000 rpm will be good for me for highest milling speed. At this point maybe i can remove or adjust the diameter of the timing belt. If i decrase the diameter of the big timing belt wheel, may be i can gain some rpm from here.

    And now i want your opinions or advice about this setup. Is there a project that you can show me to get inspire or to follow. I know there are more experinced machinist and engineers in here and i want to hear advices from them.

  2. #2
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    Replace the broken gear.

  3. Likes JohnEvans, davehud, HWElecRepair liked this post
  4. #3
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    Default

    Quote Originally Posted by dana gear View Post
    Replace the broken gear.
    This is not fun. 😏


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