What a beautiful mill! It's a shame you're going to build it out of sheetmetal. Sheetmetal will make it an even less rigid machine than what you already have and will be very loud. If it was good enough, you'd see tons of cheap sheetmetal based lathes and mills. It's also not cheap. The heavier the gauge the more expensive it gets. I would use either epoxy granite or uhpc (ultra high performance concrete). A gallon of epoxy can be had for $50 to $75 and can easily make 4 small mills. The sand and gravel mix is a few dollars or even free, but you have to make sure you mix it properly.
Good point, I forgot to mention that I want to fill up all of the cavities with something like epoxy granite or concrete. Just sheetmetal wouldn't be ridgid indeed.
@@bobweiram6321 That's my plan indeed, the parts that will be filled whith epoxy granite or concrete are constructed out of 6mm (1/4") sheetmetal. There surely are better solutions but I am excited to experience the result.
@@EngineerSteve I would recommend going with epoxy granite if you’re going to fill the mill since epoxy granite doesn’t shrink after curing. You could have issues with shrinkage if you use UHPC.
Very impressive! I am looking fwd to watching the build series. I too love engineering design. I am not very good at it, but I love watching what others are doing.
The spindle is ridgid mounted in the headstock, the whole headstock will move up and down when turning the handwheel as there is a worm gear connected to the handwheel (1:30 transmission, 1 full rotation of the handwheel will move the headstock 1 mm) I will show the mechanism in great detaill whenever I start building it.
Ola, ganhou mais um inscrito 😊 Porque não deu continuidade ao projeto? A maior parte do pessoal no TH-cam que constrói essas maquinas, a maioria nem sai do papel, e os que começam o projeto para no meio do caminho.
Obrigado por seu comentário! Embora eu não tenha feito muitos vídeos sobre este projeto recentemente, ainda estou trabalhando na fresadora e estou perto de terminar outro vídeo sobre este projeto, mas meu tempo livre é limitado (desculpe pela tradução potencialmente ruim)
Obrigado pela resposta! Entendo perfeitamente a questão do tempo. De qualquer maneira estou inscrito no seu canal, espero ver sua fresadora trabalhando em vídeos no futuro! Claro que se possível fazer alguma filmagem simples do projeto ficaríamos gratos!
Looks very similar to the milling machine I have. Observations: make the upright as rigid to the X/Y table as possible. Also, give the upright as big a CSA as possible. Still a lot of backlash in the worm drive Z axis in mine too, so if you can reduce that, again you’ll improve the mill. Finally, make it DRO compatible so it has more usability.
Thanks for your comment! While designing I made sure that the upright is connected to both the table and the base (with a total of 10 bolts), this way the table, base and upright should form a ridgid group. also filling the base and upright with concrete or epoxy granite should help a lot. I am planning to make a DRO myself as I want rotary encoders on all axis to make the steppers work in a closed loop.
Nice design. You said you'll connect steppers to the axes. Will you do it in an open loop? The slides are rough, lots of statical friction - do you expect the steppers to perform accurately? (typically CNCs use ball based slides to minimise friction).
I want to combine steppers and rotary encoders to create a closed loop system (I know there are closed loop steppers, might use those instead). To be honest I still have to do some calculations to make sure that the steppers are able to move the x,y-axis, the z-axis has a 1:30 (worm gear) reduction, which should make it an easy job for the stepper. Speed is not very important to me so I can always use a belt reduction as I want to power the axis with a belt transmission anyway.
I thought about it but decided to build it as ridgid as possible. It would be a very nice feature but I will play around with fixturing whenever a setup requires a tilted headstock.
If the design is not capable to provde the machine bed including column with a decent amount of rigidity then it's not worthwhile to start building one. The machine bed must be heavy as the more mass it has the more mechanic energy it can absorb.
Thanks for the feedback, I will make sure to incorporate weights into the base by means of filling it with steel/concrete or something like that. It will never be comparable to an industrial machine but I am confident that it will perform to my expectations.
![DIY Milling Machine Build [Based on Bridgeport]. Part 1: Quill box and spindle assembly](http://i.ytimg.com/vi/q7qRK0xWVzc/mqdefault.jpg)
What a beautiful mill! It's a shame you're going to build it out of sheetmetal. Sheetmetal will make it an even less rigid machine than what you already have and will be very loud. If it was good enough, you'd see tons of cheap sheetmetal based lathes and mills. It's also not cheap. The heavier the gauge the more expensive it gets.
I would use either epoxy granite or uhpc (ultra high performance concrete). A gallon of epoxy can be had for $50 to $75 and can easily make 4 small mills. The sand and gravel mix is a few dollars or even free, but you have to make sure you mix it properly.
Good point, I forgot to mention that I want to fill up all of the cavities with something like epoxy granite or concrete. Just sheetmetal wouldn't be ridgid indeed.
@@EngineerSteve So you're using the sheetmetal as a form? Sound interesting. Can't wait to see what you come up with.
@@bobweiram6321 That's my plan indeed, the parts that will be filled whith epoxy granite or concrete are constructed out of 6mm (1/4") sheetmetal. There surely are better solutions but I am excited to experience the result.
@@EngineerSteve I would recommend going with epoxy granite if you’re going to fill the mill since epoxy granite doesn’t shrink after curing. You could have issues with shrinkage if you use UHPC.
@@grandmastersreaction1267 Thanks for your imput! I am leaning towards epoxy granite or other epoxy solutions.
Very impressive! I am looking fwd to watching the build series. I too love engineering design. I am not very good at it, but I love watching what others are doing.
Thanks for your comment! I am still learning a lot in the field of engineering, it surely is interesting!
Please I want you to explain how the spindle is moving up and down through the nob when the motor is rotating
The spindle is ridgid mounted in the headstock, the whole headstock will move up and down when turning the handwheel as there is a worm gear connected to the handwheel (1:30 transmission, 1 full rotation of the handwheel will move the headstock 1 mm) I will show the mechanism in great detaill whenever I start building it.
Ola, ganhou mais um inscrito 😊
Porque não deu continuidade ao projeto?
A maior parte do pessoal no TH-cam que constrói essas maquinas, a maioria nem sai do papel, e os que começam o projeto para no meio do caminho.
Obrigado por seu comentário! Embora eu não tenha feito muitos vídeos sobre este projeto recentemente, ainda estou trabalhando na fresadora e estou perto de terminar outro vídeo sobre este projeto, mas meu tempo livre é limitado (desculpe pela tradução potencialmente ruim)
Obrigado pela resposta!
Entendo perfeitamente a questão do tempo.
De qualquer maneira estou inscrito no seu canal, espero ver sua fresadora trabalhando em vídeos no futuro!
Claro que se possível fazer alguma filmagem simples do projeto ficaríamos gratos!
Looks very similar to the milling machine I have. Observations: make the upright as rigid to the X/Y table as possible. Also, give the upright as big a CSA as possible. Still a lot of backlash in the worm drive Z axis in mine too, so if you can reduce that, again you’ll improve the mill.
Finally, make it DRO compatible so it has more usability.
Thanks for your comment! While designing I made sure that the upright is connected to both the table and the base (with a total of 10 bolts), this way the table, base and upright should form a ridgid group. also filling the base and upright with concrete or epoxy granite should help a lot.
I am planning to make a DRO myself as I want rotary encoders on all axis to make the steppers work in a closed loop.
Nice design. You said you'll connect steppers to the axes. Will you do it in an open loop? The slides are rough, lots of statical friction - do you expect the steppers to perform accurately? (typically CNCs use ball based slides to minimise friction).
I want to combine steppers and rotary encoders to create a closed loop system (I know there are closed loop steppers, might use those instead).
To be honest I still have to do some calculations to make sure that the steppers are able to move the x,y-axis, the z-axis has a 1:30 (worm gear) reduction, which should make it an easy job for the stepper. Speed is not very important to me so I can always use a belt reduction as I want to power the axis with a belt transmission anyway.
Do you have the files for the spindle available?
The design of the spindle is not yet fininished but when it is I will surely make the files available!
@@EngineerSteve legend
Nice
Thank you
Better that the spindle housing can be tilted in a controlled manner.
I thought about it but decided to build it as ridgid as possible. It would be a very nice feature but I will play around with fixturing whenever a setup requires a tilted headstock.
If the design is not capable to provde the machine bed including column with a decent amount of rigidity then it's not worthwhile to start building one. The machine bed must be heavy as the more mass it has the more mechanic energy it can absorb.
Thanks for the feedback, I will make sure to incorporate weights into the base by means of filling it with steel/concrete or something like that. It will never be comparable to an industrial machine but I am confident that it will perform to my expectations.
Mmasheen
🤗 Ｐｒⓞм𝕠𝕤𝐌