TPC 326

Question 1

A universal horizontal milling machine is like a plain horizontal milling machine except?

Answer 1

It has a table swivel

Question 2

What houses the spindle in a milling machine?

Answer 2

The column

Question 3

What supports the saddle and table on a milling machine?

Answer 3

The Knee

Question 4

How is the vertical milling attachment mounted?

Answer 4

It is bolted to the column for support

Question 5

A system of gears in the vertical milling attachment changes the spindle rotation from?

Answer 5

Horizontal to vertical

Question 6

Spindle speed is always expressed in?

Answer 6

RPM

Question 7

A milling cutter’s speed is the rate at which?

Answer 7

A particular cutter tooth passes over the workpiece surface

Question 8

In order to compute spindle speed, you must have?

Answer 8

Cutter speed
Cutter diameter
Conversion from ft to in

Question 9

An effective method for holding a cylindrical workpiece, besides using a chuck, is to?

Answer 9

Mount it in a V-block

Question 10

The angular graduations on the base of the vise allow you to?

Answer 10

Align the workpiece accurately at any angle to the overhead cutter

Question 11

A slab milling cutter is a type of plain milling cutter that is especially designed for taking ________ cuts

Answer 11

Heavy

Question 12

If the helix spiral to the right across the face of the cutter what kind of hand is it?

Answer 12

It is a right hand helix

Question 13

If the work is fed from the left to the right what kind of cut are you making?

Answer 13

A left hand cut

Question 14

The style B arbor has a _____________ which fits into the bearing in the arbor support.

Answer 14

Keyed bearing sleeve

Question 15

Check the ____________ for proper positioning. Carefully move the arbor taper into the spindle.

Answer 15

Drawbar

Question 16

Why should the arbor nut never be tightened or loosened unless the arbor support is in position?

Answer 16

The arbor can be sprung if it is not supported

Question 17

Computing spindle speed in rpm formula?

Answer 17

rpm= sfpm x 4
————
D

Question 18

In rough milling the workpiece what crucial for the most efficient cut?

Answer 18

Balance speeds, feeds, and the depth of cut

Question 19

If you stop the automatic feed before the cut is finished what should you do?

Answer 19

Do not leave the cutter turning, it could leave grooves in the workpiece

Question 20

How can you increase the surface quality?

Answer 20

Lower the feed rate while maintaining the same spindle speed

Question 21

The first step in machining the T- slot is?

Answer 21

You must mill a slot

Question 22

To mill the first slot in the T slot you will need what kind of cutter?

Answer 22

Side milling cutter

Question 23

Aligning the cutter and workpiece

Answer 23

You can calculate this distance by subtracting one-half of the cutter width from the distance between the slots centerline and the edge of the workpiece

Question 24

The T slot is completed by using a T slot milling cutter fitted into the spindle of the milling machine with a?

Answer 24

Spindle adapter

Question 25

Since the T slot cutter is held in the horizontal spindle instead of on an arbor it is necessary to set the workpiece up on its?

Answer 25

Side to complete the T slot

Question 26

Angle milling a bevel on a workpiece you should use?

Answer 26

A 45 degree single angle cutter

Question 27

Use end mills for?

Answer 27

Vertical milling of slots

Question 28

Milling the T slots with a vertical milling attachment

Answer 28

Use the same T slot cutter that you used in the horizontal setup

Question 29

What milling cutter do you use when angular milling with a vertical milling attachment

Answer 29

Use an end mill in the vertical attachment to mill the bevel on the workpiece

Question 30

The procedure for milling a dovetail are very similar to the procedures for milling a T-slot the difference is?

Answer 30

You mill angular dovetails in the wall of the slot or groove instead of a T

Question 31

In straddle milling what controls the distance between the cutters?

Answer 31

Spacers

Question 32

As a cut is made in saddle milling the workpiece passes between the cutters, be sure there is clearance between?

Answer 32

The top surface of the workpiece and the spacers between the cutters

Question 33

What is the greatest advantage of straddle milling?

Answer 33

You save time

Question 34

What helps to balance the thrust load on the arbor?

Answer 34

The opposite helix angles when both are cutting

Question 35

The cutter used to mill the angled step must be wide enough to?

Answer 35

Finish the wide end of the step

Question 36

The most precise method of finding how wide the end of an angled step measures is?

Answer 36

To use trigonometry

Question 37

Why is it best practice to use the smallest cutter that will do the job?

Answer 37

It’s less expensive

Question 38

The amount of cross feed necessary to remove a given amount from the angled side of the workpiece is?

Answer 38

Actually less than the given amount

Question 39

In vertical face milling the shell end mill must be wider than the surface you must cut, why?

Answer 39

This avoids surface lines

Question 40

If you were to use a side milling cutter mounted on the horizontal arbor of the machine, you would produce?

Answer 40

A key seat with feathered ends

Question 41

Milling machine cutters for woodruff key seats and keyways are?

Answer 41

Standardized

Question 42

The last two digits in a woodruff key indicate?

Answer 42

The cutter diameter in eighths of an inch

Question 43

What kind of arbor is used in shell end mill mounting setup?

Answer 43

Style C arbor

Question 44

The two-fluted end mill has cutting edges on its sides and across the end, this allows for?

Answer 44

Plunging

Question 45

The two fluted end mill acts like a?

Answer 45

Drill bit

Question 46

When a dividing head is not used, it is best to use what on round work?

Answer 46

Straddle mill square ends on round work

Question 47

To determine the largest square that you can cut out of any shaft, multiply the diameter by?

Answer 47

.707

Question 48

What can you use if the straddle distance is slightly to narrow to the workpiece?

Answer 48

Install shims

Question 49

When milling tangs what procedure do you use?

Answer 49

The same general procedures for milling a square

Question 50

If a single flat surface is specified on the circumference of a cylindrical workpiece l, it is usually machined with a?

Answer 50

Plain milling cutter