This is my first post as I am a new member so please excuse the formality.

I already know how to use speed and feed calculations for machining and know the relationship between cutting speed and rpm. However, when calculating cutting speed the answer is given in meters/min or surface feet per min for our friends across the pond. For instance mild steel has a recommended cutting speed of between 25-33 meters a minute for HSS tooling. Fine.

My lathe has a feed range chart shown in decimal feed ranges, as do most common lathes. I know from experience where to set it for different materials.

Does anyone know how to generate an answer after calculating meters per min into the information shown on the setting chart on the lathe. I am lucky to own a large XYZ machine that is capable of a large range shown as between .2 to 7. the machine seems to show mm/r which I take to be millimetres per revolution (probably of the lead screw not the work holding device).

I did know how to do this thirty years ago, but stupidity has got the better of me.

Regards

Phill