Milling Machine

Question 1

Are machine tools used to produce one or more machined surfaces accurately on a piece of material, the workpiece; this is done by one or more rotary milling cutters having single or multiple cutting edges.

Answer 1

Milling machines

Question 2

The workpiece is held securely on the work table of the machine or in a holding device clamped to the table. It is then brought into contact with a _____ ______.

Answer 2

Revolving cutter

Question 3

The part is moved very accurately by means of a table that can be controlled in two directions. The Third axis is provided by a vertical spindle (Z-axis) that moves up and down. What are the two axes?

Answer 3

X-axis(left/right) and Y-axis(in/out)

Question 4

Types of milling machines.

Answer 4

Horizontal and Vertical

Question 5

Has a horizontal spindle, and the type of machines are well-suited for peripheral milling process.

Answer 5

Hortizontal milling machines

Question 6

Are more suited for face and end milling because of its vertical spindle.

Answer 6

Vertical milling machines

Question 7

Is the basic machine tool for milling. It derives its name from the fact its two main components are a column that supports the spindle, and a knee that supports the worktable.

Answer 7

Knee-and-column milling machine

Question 8

Only the table can be move relative to the spindle

Answer 8

Horizontal knee-and-column milling machines

Question 9

Both the spindle and table can be moved.

Answer 9

Vertical knee-and-column machines

Question 10

Broad categories of milling machines

Answer 10

Peripheral milling, Face milling, end milling

Question 11

Other term for peripheral milling

Answer 11

Plain milling/Slab milling

Question 12

The axis of the tool is parallel to the surface being machined, and the operation is performed by cutting edges on the outside periphery of the cutter.

Answer 12

Peripheral milling/Plain milling/slab Milling

Question 13

Usually performed on horizontal spindle milling machines

Answer 13

Slab milling/Peripheral milling/Plain milling

Question 14

These operations make flat surfaces on the workpiece. The surface cut is parallel to the periphery of the cutter. The cutter width extends beyond the workpiece on both sides.

Answer 14

Plain milling/Slab milling

Question 15

The width of the cutter is less than the workpiece width, creating a slot in the work.

Answer 15

Slotting/Slot milling

Question 16

May be used for milling narrow slots and for cutting off work.

Answer 16

Metal-slitting saws

Question 17

Often used to machine a vertical surface on the sides or the ends of a workpiece

Answer 17

Side milling

Question 18

Involves the use of two side milling cutters to machine the opposite sides of a workpiece parallel in one cut.

Answer 18

Straddle milling

Question 19

A fast method of milling used a great ideal in production work. It is performed by using two or more cutters on the arbor to produce the desired shape. The cutters may be a combination of plain and side milling cutters.

Answer 19

Gang milling

Question 20

The milling cutter teeth have a special profile that determines the shape of the slot that is cut in the work.

Answer 20

Form milling

Question 21

The axis of the cutter is perpendicular to the surface being milled, and machining performed by cutting edges on both the end and outside periphery of the cutter.

Answer 21

Face milling

Question 22

The diameter of the cutter is greater than the workpiece width, so the cutter overhangs the work on both sides.

Answer 22

Conventional Face milling

Question 23

The cutter overhangs the work on only one side

Answer 23

Partial face milling

Question 24

A very common operation performed on both vertical and horizontal spindle milling machines or machining centers.

Answer 24

End milling

Question 25

The cutter’s diameter is less than the work width, so a slot is cut into the part.

Answer 25

Conventional End milling

Question 26

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

Answer 26

Profile milling

Question 27

Another form of end milling used to mill shallow pockets into flat parts

Answer 27

Pocket milling

Question 28

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

Answer 28

Surface contouring

Question 29

Cutting speed formula (V)

Answer 29

pi x D x N

Question 30

Feed formula (fm)

Answer 30

ft x n x Ns

Question 31

The distance between the old and new machined curface

Answer 31

Depth of cut (DOC)

Question 32

One of the most important attachments for the milling machine. Used to divide the circumference of a workpiece into equally spaced divisions when milling gears, splines, squares, and hexagons.

Answer 32

Indexing or dividing head

Question 33

Machining time for milling machine (Tm)

Answer 33

L + LA/fm

Question 34

Length approach formula in milling machine (LA)

Answer 34

sr(d(D-d)

Question 35

Metal removal rate formula for milling machine (MRR)

Answer 35

L x W x d/Tm or W x Fm x d

Question 36

Feed formula for milling machine (fm)

Answer 36

L/Tm

Question 37

The universal dividing head set consists of what?

Answer 37

Index plates, headstock change gears and quadrant, universal chuck, footstock, and center rest.

Question 38

When the cutter and the workpiece are going in opposite directions.

Answer 38

Coventional milling

Question 39

When the cutter and workpiece are going in the same direction

Answer 39

Climb milling