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RESHARPENINGAND CARE OF MILLINGCUTTERS
The productivity of a milling machine depends to a large degree
on the efficiency of the milling cutter. Best results in both produc-
tion and cutter life are obtained by sharpening cutters correctly
and carefully, and by taking proper care in handling and storage.
A correctly sharpened cutter requires less driving power, pro-
duces better quality work and gives longer service than an in-
correctly or hastily sharpened cutter.
The following factors should be considered:-
Correct handling and storage to prevent damage.
Restoration of the cutting edges to their original geometry using
correct procedures.
Suitable wheel selection to ensure correct surface finish and
stock removal. Consult wheel suppliers for specific recommen-
dations.
Remember that milling cutters are precision tools and must be
handled carefully. Damage due to incorrect handling or storage
can be seen as a flaw upon the milled surface of a workpiece.
Grinding should be needed only as a result of dulling due to use.
Regrinding to remove damage caused by rough handling must
be considered to be a wasted process which reduces the life of
a cutter.
Correct clearance angles and radial rakes can be obtained from
data given on page
Primary
Secondary
Radial
Rake
