MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
FIGURE 18.
GANG MILLING OPERATIONS.
k.
Form Milling.
(1)
General. Form milling is the process of machining special contours
composed of curves and straight lines, or entirely of curves, at a single
cut. This is done with formed milling cutters, shaped to the contour to be
cut, or with a fly cutter ground for the job.
(2)
Operation.
The more common form milling operations involve milling
half-round recesses and beads and quarter-round radii on the workpieces
(figure 19 on the following page). This operation is accomplished by using
convex, concave, and corner rounding milling cutters ground to the desired
circle diameter.
(3)
Other jobs for formed milling cutters include milling intricate
patterns on workpieces and milling several complex surfaces in a single cut,
such as produced by gang milling.
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