Radius milling

[modeng2000]

I want to mill a radius so a valve block will fit to the side of a cylinder. I do not have a ball end slot drill of the specific size and so an answer is to mill in steps.

Guy Lautard published a book of tables for a range of radii but of course the one I want is not included. Having worked out the numbers the hard way I wonder it there is any information about using a programme such as Microsoft Excel or the like to generate the necessary numbers.

I have tried to programme Excel but I am afraid to admit, it has beaten me!

John

[Tel]

Wot's wrong with the good 'ol flycutter or a boring bar John?

[Tel]

... or go here

www.myvirtualnetwork.com/mklotz/#shop

and download Ballcut.zip

[modeng2000]

Hi Tel,
Thanks for the suggestions.
It seems easier to get the alignment for the cut using my vertical mill besides I do not have an adjustable boring bar of a suitable size - yet!

I will have a look at the zip file.

Regards,
john

[modeng2000]

Tel,

Thanks again for your suggestions.
I have had another go with Excel and seem to have something which gives the right answers. It now needs refining to make it user friendly.

Regards,
John