Andy Pugh wrote: > 2009/6/10 Jack Coats <[email protected]>: > > >> Most of us are just trying to 'get-er-done', so working within 'practical >> tollerances' >> for 'practical solutions', is probably the most helpful. >> > > Absolutely, I posted a rather longer message on pretty much that subject. > > If You run a big milling machine with maybe 100 horsepower motor swinging 16 inch face mills you can watch the horse power draw and it is way higher on a conventional cut than on a climb cut. The heat that the cutter generates Is less too. Fifty inches of feed has the same effect as reducing spindle speed by 50 surface inches per minute. Conventional milling in effect increases surface feet on the rotation of the cutter and generates more heat. What would put a load on a belt is if the the cutter jerks the table back against the belt which it is prone to do. That will momentarily stretch the belt. For this reason I have doubts as to how good a belt drive is on a mill. On a lathe it would seem to be ok as you are never climb cutting. Doug
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