rung fu clone RF-45 ZX45 cnc conversion

[jbolt]

I have added set screws to the clamp type couplers. For shafts with flats I use blunt end set screws, for round shafts I use pointed set screws and drill a detent in the shaft with the same point angle.

Jay

 

[GtG001]

Hello Allen
The one I used for Z looks like this one on Ebay " 141122463628 " it is a diaphragm type
So far it has held up more than a couple years without an issue.
I tried a ridged coupling on my lathe it did not work out well.
Steve
I think the one I found had a clamp screw and a set screw to hold the shaft. This one shows only the clamp screw.
View attachment 129186

Thanks Steve. I was worried that the 4200 oz motor might have too much torque for the standard style coupling. I have seen many people use the spider style flexible coupling and when checking on the torque rating, it was under rated for the 4200 oz motor.
What problems did you have on your lathe with the solid coupling, if you don't mind me asking?

Regards,
Allan.

 

[jumps4]

sorry I didn't reply sooner Allan
I didn't receive a notice you had messaged me back, my notices keep getting wiped out.
the problem I think was with the end of the ballscrew where they machined it. I don't believe they were perfectly centered.
Also holding the screw too ridged left tool marks in my work for every imperfection in the rotation of the screw and movement of the saddle.
I have dead headed the 4200 to where it just bangs without damaging the coupling or slip.
miss a decimal point in a line of code and you will see what I mean lol
Steve

 

[GtG001]

sorry I didn't reply sooner Allan
I didn't receive a notice you had messaged me back, my notices keep getting wiped out.
the problem I think was with the end of the ballscrew where they machined it. I don't believe they were perfectly centered.
Also holding the screw too ridged left tool marks in my work for every imperfection in the rotation of the screw and movement of the saddle.
I have dead headed the 4200 to where it just bangs without damaging the coupling or slip.
miss a decimal point in a line of code and you will see what I mean lol
Steve

Thanks Steve for the reply. I did read your lathe project in the last few days and I understand what you said. Thank you for all the research you have done with the Mill conversion. As I look at other conversions and consider them for my conversion, I can see that you have made some good choices with your selection and find that I have not been able to improve much on them. It is such a nice thing to have someone with similar style as normally I am paving a different path to what others take and that usually means a harder path.

Best regards,
Allan.

 

[GtG001]

Thanks Steve for the reply. I did read your lathe project in the last few days and I understand what you said. Thank you for all the research you have done with the Mill conversion. As I look at other conversions and consider them for my conversion, I can see that you have made some good choices with your selection and find that I have not been able to improve much on them. It is such a nice thing to have someone with similar style as normally I am paving a different path to what others take and that usually means a harder path.

Best regards,
Allan.

Hi Steve,
After doing a little more research, I noticed that the Tormach 1100 Mill uses solid steel couplings on it's axis to motor connections. This makes sense to me if you have the alignment correct, it should work. Hopefully, I will be able to get the alignment correct.