MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
FIGURE 12.
DIRECTION OF FEED FOR MILLING.
also serves to lubricate the cutter face and to flush away the chips,
consequently reducing the possibility of marring the finish.
(2)
Cutting oil compounds for various metals are given in table 3 on the
following page. In general, a simple coolant is all that is required for
roughing.
Finishing requires a cutting oil with a good lubricating
properties to help produce a good finish on the workpiece.
Aluminum and
cast iron are almost always machined dry.
(3)
The cutting oil or coolant should be directed, by means of a coolant
drip can or a pump system, to the point where the cutter contacts the
workpiece. Regardless of the method used, the cutting oil should be allowed
to flow freely over the workpiece and the cutter.
f.
(1)
General.
Plain milling, also called surface milling and slab
milling, is milling flat surfaces with the milling cutter axis parallel to
the surface being milled. Generally, plain milling is accomplished with the
workpiece surface mounted to the milling machine table and the milling
cutter mounted on a standard milling machine arbor. The
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