TPC 328

Question 1

What saw should you use for round stock?

Answer 1

Always use a power hacksaw or a horizontal handsaw for a round stock, and Always clamp the round stock in a vise

Question 2

What is the main difference between the operation of a power hacksaw and a horizontal bandsaw?

Answer 2

In a horizontal bandsaw there is no cutting stroke and, therefore, no lost motion

Question 3

When installing bandsaw blades which way must the teeth face?

Answer 3

The teeth must point downward and to the right

Question 4

When setting up the horizontal bandsaw how is band speed controlled?

Answer 4

Band speed is controlled on most light-duty bandsaws by changing the drive belt position

Question 5

When making the cut what is the last step?

Answer 5

Move the head control lever to release

Question 6

When selecting one piece guide inserts what must you do?

Answer 6

You must select a pair of upper and lower inserts to match the width and thickness of the band you are using

Question 7

When setting the blade the teeth in your right hand should?

Answer 7

Point downward

Question 8

What is one bandsaw safety precaution?

Answer 8

Make sure all guards are in place before using the bandsaw

Question 9

As you approach the end of the cut on a bandsaw what should you do?

Answer 9

Reduce the feed pressure so that the saw does not break through the work unexpectedly

Question 10

When setting up the vertical bandsaw for internal cutting what is one step?

Answer 10

Sanding the portions of the band ends in contact with the welder jaws so they are free of dirt, oil, or similar contaminants

Question 11

When using the sensitive drill press the feed is under the control of the?

Answer 11

Directly Under the control of the operator

Question 12

Before mounting a tapered-shank machining tool, make sure to what?

Answer 12

Make sure the male and female surfaces of the drill shank and the spindle are free of chips, burrs, and nicks

Question 13

What drilling machine also has the power and rigidity for boring, an operation normally not preformed on a drilling machine?

Answer 13

Radial presses

Question 14

When you plan the order of the machining steps what is one crucial step?

Answer 14

Choose the order that requires the fewest changes in setup

Question 15

How do you set up a workpiece in a clean drill-press vise using parallels?

Answer 15

Lightly tap the upper surface of the workpiece with a lead or plastic faced hammer to seat the work piece firmly on the parallels

Question 16

When should you use a gear-head drill press?

Answer 16

You should try to use a gear-head drill press on all middle-sized holes ( 3/8 to 1/2in. ) and always use it on holes over 1/2in

Question 17

Rpm spindle speed formula

Answer 17

( rpm = sfpm X 4
—————
Tool diameter )

Question 18

Because you have a large-diameter drill and fairly thick stock to drill through what must you do?

Answer 18

You must periodically back the drill out of the hole to clear away loose chips. This procedure cuts down the chances of packing the chips, which could break the drill

Question 19

If the drills cutting edge chips what is the usual issue?

Answer 19

The feed is too fast

Question 20

The size of the counterbore pilot ( usually an interchangeable component ) depends on?

Answer 20

The diameter of the existing hole

Question 21

The most distinctive feature of typical precision vise?

Answer 21

Having a swivel base

Question 22

A shaper should never be left with a cutting tool in its?

Answer 22

Tool post

Question 23

What is part of the pre-startup checklist?

Answer 23

Set the transmission on the slowest speed

Question 24

What is “indicating in” mean?

Answer 24

A leveling process, you indicate-in either the work table or the vise before using the shaper

Question 25

Why do you tap the work lightly with a soft mallet when mounting a workpiece?

Answer 25

To obtain a solid seat and fit

Question 26

What is the first step of positioning the ram, table, and tool holder?

Answer 26

Setting the proper length of stroke

Question 27

Number of strokes per minute formula

Answer 27

( N = CS x 7
————
L + 1 )

Question 28

What is L + 1 mean?

Answer 28

Length of the workpiece through which the cutter must actually travel ( in inches ) plus 1 in. more for the total over travel made by the ram at both ends of its stroke

Question 29

When making the cut, what must you wear?

Answer 29

Wear proper eye protection

Question 30

What can a shaper be used to produce?

Answer 30

Splines, keyways, and slots and to machine internal and vertical surfaces

Question 31

With a surface grinder what kind of surfaces can you produce?

Answer 31

Depending on the particular setup, you can produce flat, angular, or contoured surfaces in this machine

Question 32

What is part of preparation for grinding your workpiece?

Answer 32

Make sure it has enough surplus material for grinding

Question 33

How should you set the diamond dresser?

Answer 33

Set the dresser so that the arrow points in the proper direction. Position the grinder saddle and lower the wheel until it’s high point lightly touches the diamond

Question 34

What is the first operation on the V-block?

Answer 34

To grind the basic flat surface

Question 35

When grinding a flat surface where should you position the wheel?

Answer 35

Slightly beyond the back edge of the work piece. Start the automatic table feed. Lower the wheel .001 to .002 for a rough cut and turn on the coolant

Question 36

The recommended allowance for finishing cuts in general purpose grinding is?

Answer 36

.0005 to .001

Question 37

What is the formula to find rpm in cylindrical grinding machines?

Answer 37

Rpm = sfpm/ wheel circumference

Question 38

When grinding position the workpiece between centers, near the center of the table and provide enough pressure…

Answer 38

From the foot-stock center adjustment to hold the work in place

Question 39

For general purpose grinding, you can calculate the approximate rpm you need for the workpiece by using the equation?

Answer 39

Rpm = sfpm X 4/workpiece diameter

Question 40

When the width of the wheel is greater than the length of the area to be ground what do you do?

Answer 40

The table traverse is not used, you rough and finish grind by in feeding ( plunge grinding )

Question 41

What optional accessory provides greater flexibility for moving the workpiece to various positions?

Answer 41

Rotary table

Question 42

When are stub boring bars used?

Answer 42

When the workpiece area to be bored can be located close to the head stock of the machine, there is less chance of vibration and tool chatter

Question 43

When working a small bore with a light boring bar, you need a?

Answer 43

Cutter with greater back-take and side-rams angles than required by a larger tool taking heavier cuts

Question 44

When measuring on finished surfaces with a dial indicator what do you adjust it to?

Answer 44

Adjust the workpiece until the reading is constant throughout the table stroke

Question 45

If the workpiece has a machined hole, you can use it’s inside wall as a reference surface for alignment called?

Answer 45

Checking concentricity

Question 46

Both the primary and the secondary layout lines must be?

Answer 46

Parallel with the axis of the boring bar

Question 47

If the boring bar is inserted in an end support you cannot withdraw the bar from the work to make the measurement, however you can…

Answer 47

Still use inside calipers to measure the bore size

Question 48

Multiple-point boring is particularly advantageous in?

Answer 48

The machining of long work areas to obtain a rough or semi-finished bored hole

Question 49

When facing the tool is fed radially by a small, power cross-slide within….

Answer 49

The tool holder itself