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milling (factors affecting surface roughness (workpiece feed rate, number…
milling
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up & down milling
up milling
-Does not require backlash eliminator
-Safer in operation due to the separating forces between the cutter and workpiece
-Fragments of BUE are absent
-The life of the cutter is not affected by the sandy surfaces
-Loads are not acting suddenly on the teeth
-Looseness in moving pars is not detrimental to the cutting motion
down milling
-it is possible to use simplified to mill parts
-milled surfaces are not affected by the revolution marks and are easily polished
-requires lower machining power
-the tendency of vibrations and chattering is low
-cutting edge blunting is less possible
-leads to better surface quality
-requires more rigid equipment
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