Rf45 clone glow up.

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1 year 6 months ago #325746 by Kieran
Rf45 clone glow up. was created by Kieran
Hey guys. I just wanted to show off my new build in process.  
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Rf45 type machine, to be cut up and built back. 

imgur.com/5rXfGbQ

Basic premise... 

imgur.com/09rXoGL

imgur.com/a/Er23Lcq

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1 year 6 months ago #325748 by Hakan
Replied by Hakan on topic Rf45 clone glow up.
Interesting, hopefully we will see more pictures along the way.
Maybe turn the linear rail upside down on X?

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1 year 6 months ago #325763 by tommylight
Replied by tommylight on topic Rf45 clone glow up.
You can upload pictures here on the forum by clicking on "attachments" below the editor.
Thank you.

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1 year 6 months ago #325894 by Kieran
Replied by Kieran on topic Rf45 clone glow up.
Got the table modified last week.

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1 year 6 months ago #325895 by Kieran
Replied by Kieran on topic Rf45 clone glow up.
Got some goodies too. 

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1 year 6 months ago #325919 by spumco
Replied by spumco on topic Rf45 clone glow up.
OP - That's a nice harmonic drive you've got there, especially with the big through-bore.

If you still need some mounting inspiration, Andy Pugh did a fantastic job of documenting his 4th axis build based on similar reducer.

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1 year 6 months ago #325995 by andypugh
Replied by andypugh on topic Rf45 clone glow up.

 4th axis build based on similar reducer.
Do you mean this one?  bodgesoc.blogspot.com/2017/05/harmonic.html ? 

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1 year 6 months ago #326008 by spumco
Replied by spumco on topic Rf45 clone glow up.

Do you mean this one?  bodgesoc.blogspot.com/2017/05/harmonic.html ? 

The very one.  I got jealous when you mentioned how convenient it is for you to get castings made.

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1 year 6 months ago #326016 by Kieran
Replied by Kieran on topic Rf45 clone glow up.
How's the rigidity of the harmonic drive? I'm thinking of using mine as a B axis for the spindle. I will find one size smaller with a faster reduction for the table mounted rotory A or C axis.

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1 year 6 months ago #326066 by andypugh
Replied by andypugh on topic Rf45 clone glow up.

How's the rigidity of the harmonic drive? 
It seems OK. The HD website quotes values for torsional stiffness, but to be honest I don't know what value would be appropriate for a milling machine, so the numbers aren't useful to me. 

But I frequently use it just as a handy way to mount round stock and have noticed no issues. 
 

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