Общий каталог ZCC-CT 2019 - страница 928

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Indexable milling A

Difference between up-milling and down-milling

n n

V

V f f

V V

w w

B

V Feed rate tool f V Feed rate work piece w n Rotation

Up-milling Down-milling

Up-milling: the feed direction of the work piece is opposite to that Down-milling: the feed direction of the work piece is the same as that of the of the milling rotation at the connecting position. milling rotation at the connecting position.

C

Advantages and disadvantages

DirectionAdvantagesDisadvantages
Up-milling– Prevents hooking of tool – More smooth cut– Bigger stress on cutting edge – Shorter tool life
Down-milling– Higher tool life – Less thermal stress– Hooking of tool possible

D

E