Metal Cutting 4

Question 1

What is meant by an interrupted cutting operation?

Answer 1

The teeth of the

milling cutter enter and exit the work during each revolution

Question 2

What is slab milling

Answer 2

Generally in a plane parallel to the axis of
the cutter
Cross section of the milled surface
corresponds to the contour of the cutter

Question 3

What is face milling

Answer 3

Generally at right angles to the axis of rotation
of the cutter
Milled surface is flat and has no relationship to
the contour of the cutter
Cutting action of the side and face of the
milling cutter could be combined

Question 4

What is slotting?

Answer 4

A milling operation that cuts a narrow ridge into the surface
of a workpiece.

Question 5

What is side milling?

Answer 5

Milling with a sidemilling cutter to machine one

vertical surface.

Question 6

What is slitting?

Answer 6

A rotary cutting tool with peripheral
teeth, used in a milling machine to
remove material from the workpiece
through the relative motion of workpiece
and cutter.

Question 7

What is form milling?

Answer 7

A milling operation that
uses a mill with a unique shape to
create that shape into the workpiece.

Question 8

What is straddle milling?

Answer 8

Face milling of two
parallel vertical surfaces of a
workpiece simultaneously by using
two side-milling cutters
Angles of cutters are opposite to reduce vibration

Question 9

What is surface contouring?

Answer 9

A ball-nose cutter (rather than square
end cutter) is fed back and forth across the work along a curvilinear path at close intervals to create a three dimensional surface form.

Question 10

What is pocket milling?

Answer 10

Another form of end milling, this is used to mill shallow pockets into flat parts.

Question 11

What is profile milling?

Answer 11

This is form of end milling in which the outside periphery of a flat part is cut.

Question 12

What are some types of milling machines?

Answer 12

Column and knee
Bed
CNC

Question 13

What is conventional milling?

Answer 13

The cutter rotates in a direction opposite to the table feed. This way backlash is eliminated producing a smoother cut

Question 14

What is climb milling?

Answer 14

The cutter rotates in the same direction as the table feed. Backlash occurs but material removal rate is greater

Question 15

How is chipping avoided?

Answer 15

The cutter tips have to enter and exit workpiece in a

an angle.

Question 16

Name two types of milling cutters

Answer 16

HSS cutters

Mechanically attached cutters