MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 2
(8)
Size of The Milling Cutter.
In selecting a milling cutter for a
particular job, it should be remembered that a small diameter cutter will
pass over a surface in a shorter time than a large diameter cutter fed at
the same speed. This fact is illustrated in figure 33.
d.
Care and Maintenance of Milling Cutters. The life of a milling cutter
can be greatly prolonged by intelligent use and proper storage.
General
rules for the care and maintenance of milling cutters are given below:
(1)
New cutters received from stock are usually wrapped in oilpaper which
should not be removed until the cutter is to be used.
(2)
Care should be taken to operate the machine at the proper speed for
the cutter that is being used; excessive speed will cause the cutter to wear
rapidly from overheating.
FIGURE 33.
EFFECT OF MILLING CUTTER DIAMETER ON WORKPIECE TRAVEL.
(3)
Whenever practicable, the proper cutting oil should be used on the
cutter and the workpiece during the operation, since lubrication helps
prevent overheating and consequent cutter wear.
(4)
Cutters should be kept sharp, because dull cutters require more power
to drive them and this
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