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  1. #13
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    Apr 2017
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    11

    Re: Bumblebee 300x300x150mm

    Thank you. This machine was made as hobby, for my shop. i was made it about 6 month with including time for study and experiments with best mix for me. And this one compare all my expectations - really rigid frame and heavy. Base net weight about 80 kg gantry about 60. i was instal stepper temporary but now installed servos. i want do replace all aluminum pats for cast iron and steel and install more powerful spindle. Maximum feed is 7200 mm/min (limited by soft) no need higher. acceleration for tests 5m/s2, but this acceleration made scary cabinet shaking so i decrease it for 2.5m/s2. there is some videos https://www.youtube.com/watch?v=N0_XCOdPGg8 Thank you

  2. #14
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    Mar 2017
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    797

    Re: Bumblebee 300x300x150mm

    Quote Originally Posted by smlua View Post
    Thank you. This machine was made as hobby, for my shop. i was made it about 6 month with including time for study and experiments with best mix for me. And this one compare all my expectations - really rigid frame and heavy. Base net weight about 80 kg gantry about 60. i was instal stepper temporary but now installed servos. i want do replace all aluminum pats for cast iron and steel and install more powerful spindle. Maximum feed is 7200 mm/min (limited by soft) no need higher. acceleration for tests 5m/s2, but this acceleration made scary cabinet shaking so i decrease it for 2.5m/s2. there is some videos https://www.youtube.com/watch?v=N0_XCOdPGg8 Thank you

    Why did you decide to replace the steppers with servos?

  3. #15
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    Apr 2017
    Posts
    11

    Re: Bumblebee 300x300x150mm


  4. #16
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    Join Date
    Jul 2018
    Posts
    763

    Re: Bumblebee 300x300x150mm

    Hi Smlua - Whats your feed and speed rates? or chipload? very nice. Peter

  5. #17
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    Apr 2017
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    11

    Re: Bumblebee 300x300x150mm

    im trying to write it in description in youtube clips. Usually im trying to keep 0.06-0.08mm/t. And now all aluminum parts replaced for cast iron
    Attached Thumbnails Attached Thumbnails viber image 2019-03-06 , 11.03.25.jpg  

  6. #18
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    Apr 2017
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    11

    Re: Bumblebee 300x300x150mm

    Hi. and little video - trying 5$ endmill from local grinding shop https://youtu.be/grtFrsHFmGU

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