A few people have posted queries about the capabilities of the TM machines.
We just installed a TM3P and the first job on it involves machining 32" lengths of 2" x 1/2" 5083 T0 flat bar to the profile shown in the first picture.
Four bars are clamped on a fixture and there are four roughing passes at 1/2" deep, full width engagement at 4500 rpm and 30 ipm, which works out at 7.5 cubic inches a minute with the spindle load hovering around 100%.
This seems to be the best the machine can do; increasing the speed causes a fall off in torque so the feed has to be reduced, decreasing the feed increases the chipload so the feed has to be reduced.
The cutter is a GAR high helix two flute and obviously flood coolant is used.
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