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Thread: bridgeport boss 5 retrofit

  1. #13
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    Default Re: bridgeport boss 5 retrofit

    Quote Originally Posted by MillNut View Post
    The only drawback of the new Centroid controller is it does not have encoder feed back. However, comparing the capabilities and price of Leadshine 3phase steppers and DMM Dyn4 servos you can have servo performance for about the same price as the steppers.

    If my budget allows I will step up from Acorn to the Oak board and gain full servo control. Once you price Acorn at $265 + $499 for Ultimate CNC and $100 for 1 hour of support I am halfway to an Oak board. Acorn looks attractive but for the work I want to do adding the encoder feed back may be worth the extra investment.

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    That is not needed , it's a miss conception that you need the controller to close the loop, both ways work just as well, closing the loop in the drive is better in some ways than using the control, why complicate it when it is not needed

    Mactec54


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    Default Re: bridgeport boss 5 retrofit

    Thank you mactec. I think the Acorn will be more than sufficient. This is my first CNC upgrade so I'm not always sure what is needed and what is just overkill. The Pro version of the software should be all I need for now.

    As far as hardware goes I am just waiting for tax return to buy the Hiwin screw kit from H&W. I will also be buying 20TAC47 bearings.


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  3. #15
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    Default Re: bridgeport boss 5 retrofit

    Quote Originally Posted by jknarfal View Post
    i see they have complete kits on that site that offer pre made cords to connect everything. i like that! and around 1500 for the set up isn't bad. ill have to sell a couple things but that seems like the way to go. i had bought this cheap breakout board because i was hoping to get it to work with as little modification as possible. i had attempted to contact ashburn to purchase a hillbilly bob with no reply. i'm assuming they are not available anymore? im very excited to have this machine and i hope to get it going soon. ill contact DMM and see what they can set me up with thank you all
    Your original BP motors, drives, and controller may have some value. Check Ebay for pricing. When I upgraded my machine, I sold my non-working Anilam M controller for $250 in about 30 minutes of listing. Obviously I priced it too low



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    Default Re: bridgeport boss 5 retrofit

    i can start pulling everything off. if anyone is interested in the origional controls just let me know. i have a couple spare circuit boards and the programming manuals also.



  5. #17
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    Default Re: bridgeport boss 5 retrofit

    Quote Originally Posted by MillNut View Post
    The only drawback of the new Centroid controller is it does not have encoder feed back.
    According to all their ads, the Acorn board supports encoder feedback, both Mill & Lathe. Centroid Acorn CNC controller, Step and Direction 4 axis CNC Control board with ethernet communication Also there are 3 levels of software available: Free, Pro ($99) & and Ultimate ($499) I think the free version will do what I need but they told me an update can be added at any time for no additional fee.

    Milton in Tennessee ya'll!


  6. #18
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    Default bridgeport boss 5 retrofit

    Sorry, meant no encoder feed back for the axial servos. There is one encoder port available for what I would assume to be for a spindle encoder.


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    Default Re: bridgeport boss 5 retrofit

    it appears that the complete kits from centroid are very expensive. i definatly dont have the knowledge to piece something together. i like the plug n play that the dmm set up offers. does centroid offer something similar that im not seeing on ther site? i can adapt the new motors but wiring is not my strong point.



  8. #20
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    Default Re: bridgeport boss 5 retrofit

    I built up a 1985 boss 5 just like yours several years back using the original steppers. The table did not have a scratch on it. I gutted the existing controls used Arturo's CNC4PC breakout board, and motor control board for the VFD plus he is very helpful with his products. Running Mach3 with Gecko drives at 45V. Its a little slow but I have no schedule to abide by. Retired toolmaker 65 years old and still learning new things everyday. Have fun thees mills are really built. Draw in Auto Cad, Mastercam X6 for the cad side Mach3 for the cam. Its really been a ride learning all this software. There were CNC machines where I worked but I guess I was more valuable to the boss on the bench.
    Some things can be made better by hand.
    Jack



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    Default Re: bridgeport boss 5 retrofit

    im open to purchasing the components individually. but making sure each component will work with the others i would need help with. id like to set it up as good as the original controls or better. so what is available to run the stock steppers at the proper speed? what dictates speed limitations?



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    Default Re: bridgeport boss 5 retrofit

    You may want to look at a plug and play system from MachMotion. Should come in a lot less than Centroid, and if I'm not mistaken, may have a system that will utilize the origional steppers or servos you already have.



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