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07/09/2018 at 15:18

@strangemetalcutting I think we’re going little bit off topic. The image represents an old idea, that I have realized some months ago, but it didn’t work properly, like you say caused by belt slipping. I have posted those images only to show my idea regarding the coupler to switch off/on the extruder.
Returning to the modular machine why you say to put a flywheel? it can substitute the inverter? but how we can control precisily the rpm for thw extruder for example?

In these days i’m very busy and is very difficult to find time to think about machine. I hope the next month I will more free to get my hands dirty ;). For now I’m searching a place where I can work in my town for free or almost nothing. I hope well.
For the moment is all 🙂 Cheers

22/08/2018 at 12:51

@strangemetalcutting yes, I use the catalog to choose the dimension, it seems correct.

Before this version, i was thinking to use a similar method, double shaft to drive shredder and extrusion separately, with a special coupler, see photo. The problem when you drive simultaneously shredder and extrusion is that you have to raise up the temperature of extrusion to prevent clog of cold and stiff plastic inside. So I’ve designed a coupler to transmit or not the power at the extrusion, see photo. I was thinking also a coupler that transmit power only to shredder if turns in a way, and transmit to shredder and extrusion if turns on the other way. I don’t not if it can works, if you want i can try to design in cad to better understand what i told you 🙂

@anne-barbier hi, thanks for you seggestion 😉 5hp motor is very powerful, I hope i don’t need all this power. Now i’ve collected one 550w and 1.3kw, with two reducer they run at 35/40 rpm. In my first prototype i’ve used 550w motor and the shredder didn’t lock often. Using a vectorial inverter I can use max torque power also at 1rpm, so I think i can work, obviously at lower rpm.

Motor is a crucial part, i want to use the power i need, not more. According to you can work this setup? Motor 550w + vectorial inverter.

Maybe redesing the shredder to have the knife smaller so it can run with less power?

I will start to draw machine on CAD on 15 of september, more or less. Before i want to brainstorm all idea, and mostly i’ve to study 🙂 so share all your thoughts and contribute if you like this idea 😉 cheers

17/08/2018 at 21:34

Very great idea !

17/08/2018 at 21:24

Hi everybody,
@fathullah87 thank you for your quick reply, and for your support. Very important for me 😉 thanks
@morethantencents I’ve seen their work on Facebook page. I’ll send them a message as soon as possible 😉
@strangemetalcutting this is very good idea for the coupler, very elegant more than mine 😉 Looking on SKF catalogue I’ve found FRC coupler at page 73. I think I need a 150 size with appropriate taper bushing 2012. I’ve calculated assuming a service factor of 2.0, 1.5 Kw of motor power and 50 rpm. Right? I really like this idea.

Thank you all, bye 😉

14/08/2018 at 09:06

Hi, i want to share in this topic, my idea about One Modular Machine that can be used in small workspace or for workshop.
Bye, Giuseppe 🙂

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