i have made a seminar topic on classification of milling machine for my 3rd sem engineering semister have fun guys

1. Singh Abhishek Ravinder
Semister-3rd
Mechanical Dept.

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3. Milling is another basic machining
process by which surface is generated
progressively by the removal of chips from
a work piece as it is fed against a rotating
cutter.
Milling operations can be classified into
two broad categories
1. Peripheral Milling
2. Face Milling
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5.  Operation performed by milling cutter to produce a
machined surface parallel to axis of rotation of cutter
 Cutting force is not uniform throughout the length of
the cut by each tooth
 Quality of surface generated and shape of the chip
formed depends upon the rotation of cutter relative to
direction of feed movement
 It can be either UP milling or DOWN milling
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6. Also called conventional milling,
- Wheel rotation opposite of the feed
- The chip formed by each cutter tooth starts out very thin and
increases its thickness
- The length of the chip is relatively longer
- Tool life is relatively shorter
- Need more clamping force to hold the work part still.
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7. Also called climb milling,
- Wheel rotation is parallel to the feed
- The chip formed by each cutter tooth starts out thick and leaves
out thin
- The length of the chip is relatively short
- Tool life is relatively longer
- Need less clamping force to hold the work part still.
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9.  The generated surface is at right angles to the cutter
axis
 It is the combined result of actions of the portions of
the teeth located on both periphery and the
face of the cutter
 Most of the cutting is done by the peripheral portions
of the teeth, with the face portions provides the
surface finish.
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11. The milling machine supplies an accurate rotating
spindle for the cutter and a table (vise) to fix and
position the work part.
Types of Milling Machines are -:
 Column & Knee Type
 Fixed Bed Type
 Planer Type
 Special Type
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• General purpose
• Column, spindle, cutter, table,
knee, base are the common
parts of the vertical and
horizontal milling machines
• The milling machines having
only the three mutually
perpendicular table motions
(x-y-z axes) are called plain
column and knee type
• Vertical type is especially well
suited for face and end milling
operations

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• In horizontal, arbor supports
the cutter and an over arm
supports arbor
• The vertical column houses
the electrical, main drive,
spindles etc mounted on a
heavy base

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Universal Milling
Machine
• Has a table that
can be rotated in a
horizontal plane to
any specified angle

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17.  Operation of
production of
plane flat surface
parallel to axis of
rotation of plain
milling cutter
 Cutter width extends
beyond the work piece
on both sides
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18. The face milling
cutter is rotated
about an axis
perpendicular to
the work
surface
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More Examples on Face Milling

20.  Combination of
peripheral and face
milling
 Cutter has teeth
both on end face
and periphery
 Vertical milling
machine is most
suitable for end
milling operation
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21.  Operation of
production of flat
vertical surface on
side of work piece
by using side
milling cutter
 Depth of cut
adjusted by
rotating vertical
feed screw of the
table
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22.  Operation of
production of flat
vertical surfaces
on both side of the
workpiece by
using two side
milling cutters
mounted on the
same arbor
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23. Operation of
production of
angular surface on
a workpiece other
than at right
angles to the axis
of milling machine
spindle
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24.  Operation of milling
several surfaces of
the workpiece
simultaneously by
feeding the table
against a number
of cutters having
same or different
diameters
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25.  It is the operation
of production of
irregular contours
using form cutters
 The contours
maybe convex,
concave or any
other shape
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26. It is the
operation of
reproduction of
an outline of a
template or
complex shape
of a master die
on a workpiece
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27.  Operation of
production of
keys, grooves and
slots of varying
shapes and size
by using a plane
milling cutter, a
metal slitting saw,
an end mill or by
side milling cutter
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28.  Operation of
production of
threads by using a
single or multiple
thread milling cutter.
 It is performed in
special thread
milling machine to
produce accurate
threads
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