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Re: Bumblebee 300x300x150mm
Re: Bumblebee 300x300x150mm
Outstanding! Did you vibrate the pour/how?
What machining did you do to the steel mounting surfaces?
Re: Bumblebee 300x300x150mm
Nice Work!
I'd like to see what it can do with a half inch bit and a much larger piece of aluminum to really push it to it's limits.
Well done.
Re: Bumblebee 300x300x150mm
Spindle.. This one cant made this. i have plane to buy something more powerful and not Chinese, but this one can cover 90% of my tasks.
Re: Bumblebee 300x300x150mm
Quote:
Originally Posted by
smlua
Spindle.. This one cant made this. i have plane to buy something more powerful and not Chinese, but this one can cover 90% of my tasks.
http://www.cnczone.com/forums/open-s...y-granite.html
Re: Bumblebee 300x300x150mm
She's a beauty! Awesome job. How did you put the design together?
Is there any particular reason why you didn't use a colored gel coat on the mould before filling it with granite? You'd have gotten a smoother finish and could have avoided painting it later. Gel coat is a layer of thin epoxy painted on the mould and allowed to set up to tackiness before the rest of the composite is layed up. It is often pigmented to achieve a desired color.
Re: Bumblebee 300x300x150mm
looks great! :)
i like the paint job. you have to show some parts you have cut on it.
Re: Bumblebee 300x300x150mm
Very impressive build indeed! How much do your base and gantry weigh? What kinds of feed rates and accelerations are you getting? How does the machine compare to your expectations when you designed it? Do you feel it fell short, met, exceeded or wildly exceeded expectations?
bob
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
Re: Bumblebee 300x300x150mm
Quote:
Originally Posted by
smlua
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?
Re: Bumblebee 300x300x150mm
Re: Bumblebee 300x300x150mm
Hi Smlua - Whats your feed and speed rates? or chipload? very nice. Peter
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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 https://www.cnczone.com/forums/attac...d=418146&stc=1
Re: Bumblebee 300x300x150mm
Hi. and little video - trying 5$ endmill from local grinding shop https://youtu.be/grtFrsHFmGU