milling types

8/3/2019 Milling Types

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MILLING & SHAPING


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Milling Machining

Its the most basic machining operation that

allows for removal of large amount of materialquickly

Its a versatile process that allows for

production of 2-D surface work piece finish orcomplex 3-D interlaced work piece

configuration.


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Milling Machining

The cutting tool performs a rotational motion,

that is the cutting motion. The rotation axis of

the tool could be horizontal or vertical,

depending on machine tool type.

The feeding motion is achieved either by part

or tool, or both, usually on three perpendiculardirections.


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Milling Machining

The milling is achieved by the tool/cutter

having rotational motion while the feeding is byeither the tool or the work piece having atranslational motion.


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Horizontal Milling Machine

Designed for peripheral milling


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Vertical Milling Machine

Designed for face milling


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Milling types

Up milling Down milling

Or conventional milling:

-Wheel rotation opposite of

the feed

-Length of chip longer

- Tool life is relatively shorter

- Need more clamping force

to hold the work part still.

Also called climb milling:

-Wheel rotation parallel to

the feed

-Length of chip shorter

- Tool life is relatively longer

- Need less clamping force to

hold the work part still.


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Horizontal Milling Machine Operations

SLAB milling SLOT milling

The cutter width extends

beyond the work piece on

both sides

The cutter width is less than

the work piece creating a

slot.


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SIDE milling STRADDLE milling

The cutter machines/mills the

side of the work piece.

Two cutters machining two

sides of the work piece

simultaneously.


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FORM Milling FACE milling

The cutter has the

form/shape of the desired

machined profile.

The cutter as shown removes

a layer of material from the

upper part of the work piece.


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VERTICAL Milling Machine Operations

END Milling PROFILE milling

The cutter diameter is less

than that of the work piece.

The tool/cutter cuts a

profile/contour on the

periphery of a flat work piece.


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POCKET Milling 3-D SURFACE milling

The cutter removes material

from a work piece to create a

cavity.

The cutter removes material in

the work piece in 3-different

directions/axes simultaneously.


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SLOT milling T-SLOT milling

The cutter removes material from

work piece to create a slot.

The cutter removes material in

the work piece creating a T-Slot.


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Milling Tools-End Mills

Most common tools used with vertical machine. Has a flattened

end. An end mill can cut into a work piece either vertically, like a

drill, or horizontally using the side of the end mill to do the cutting


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Milling Tools-End Mills

Flat end millsSlotsPockets

Facing

Ball end mills

Fillets

Rounded Pockets

Spherical pockets

Corner

roundersRounded corners

Conical end mill for chamfers


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Work Holding for Milling Operations

Vice- its the most common

work piece holding fixture

Indexed Vice- allows for

machining of different

work piece surface

milling types

Documents