How Stiff is a Mini Lathe? (And how to make it 3.4X less noodly) скачать в хорошем качестве

How Stiff is a Mini Lathe? (And how to make it 3.4X less noodly)

In this video, I measure the stiffness of my 7 x 16 lathe and show how much it improved when bolting it down to a rigid bed. In doing this, it is important not to pull the machine out of shape when bolting it down - the bed needs to have all 4 mounting points in the same plane. I made up a hollow rectangular bed by welding two angles together (because of what I had to hand during the Covid 19 lockdown), but hollow rectangular section would work as well - large hollow sections are much stiffer than equivalent sized 'I' beams or 'U'channels, even if they are quite thin wall. The bed should be steel or cast iron so that the alignment of the lathe doesn't change with temperature (due to differential thermal expansion). The stiffness of the lathe bed improved from 1.7µm/N to 0.5µm /N with the setup I had - a factor of 3.4 times. Just sharing what I've done in case it is any use to anyone else!