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Machine Shop > Test > Flashcards

Test Flashcards

1
Q

When operating machine tools. What is not a good safely rule?

A

Always wear gloves

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2
Q

What is not a good shop safety rule?

A

Always use compressed air with ordinary air nozzle to clean machinery or
clothing.

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3
Q

Name four advantages to circular saws.

A

a.
Produce a burr free finish
b
Closer tolerances
C.
Produces cuts of extreme accuracy
d
Cutting operation is safe

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4
Q

What are the classifications of metals?

A

Ferrous and non ferrous

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5
Q

How are broaches classified?

A

As planing machines

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6
Q

How is the turret lathe different from a machine lathe?

A

a.
its equipped with a multisided tool holder, to which a number of different cutting
tools are attached

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7
Q

Name the three types of tooth sets for power band saws.

A

a. Raker set
b. Wavy Set
C. Alternate Set

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8
Q

In what instance would you use lapping operation?

A

where there is a high degree of precision and surface finish needed

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9
Q

For what purpose would you use a surface grinder?

A

For final finishing to close dimensions of a part

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10
Q

Name three basic parts of a drill press.

A

a
base
b.
spindle
C.
work table
d
head

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11
Q

All twist drills have three major parts, what are they?

A

Shank, body, and the point

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12
Q

What is the purpose of a center punch?

A

Is used to make an indentation for the drill point at the center to aid the drill in
getting started

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13
Q

What speed (rom) should you turn a 4 inch diameter piece of mild steel in a lathe?
Mild steel is recommended at 145 SFPM.

A

138

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14
Q

What is not the basic layout tool used for machine shop layout?

A

Micrometer

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15
Q

High speeds and light feeds are especially recommended for automatic drilling
machines where the holes do not exceed four drill diameters in depth. T/f

A

True

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16
Q

In practical straight turning between centers, the cutting edge of the tool should be set about _____ above center

A

5 degree

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17
Q

What does the following acronyms mean?
UNC
UNF
UNEF

A

Unified national course
Unified national fine
Unified national extra fine

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18
Q

The pitch of screw thread is the distance from a point on a screw thread to the
corresponding point on the adjacent thread. T/f

A

True

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19
Q

For right-hand threads, the carriage must travel toward the tailsotck T/f

A

False

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20
Q

The normal angle for the point of a twist drill should be:

A

118 degrees

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21
Q

The steady rest, also called a center rest, is used to support_____ work pieces for turning and boring operations.

A

Long

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22
Q

What is the most widely used method of machining a taper on the engine lathe?

A

Using a taper attachment

23
Q

The knee and column milling machine is used more frequently in tool and die shops than any other type. T/f

A

True

24
Q

Into what two classes are the knee and column machines divided?

A

Horizontal or vertical

25
Q

Accuracy and durability of the milling machine depends on it being kept clean and oiled t/f

A

True

26
Q

Feed is the term applied to the distance the tool bit advances along the work for each half revolution of the lathe spindle T/f

A

False

27
Q

There are two major types of grinding

A

Precision and non precision

28
Q

Surface grinders are used in the grinding of precision parts. T/f

A

True

29
Q

What does the acronym CNC mean with regards to robotic machining?

A

Computer Numerical Control

30
Q

. A drilling machine comes in many shapes and sizes, from small hand-held power
drills to bench mounted and finally floor-mounted models. T/f

A

True

31
Q

Name four basic parts of the engine lathe.

A

a. Ways
b.
Tailstock
C.
Compound rest
d.
Apron

32
Q

Turret lathes are classified as either horizontal or

A

Veritical

33
Q

Twist drills are usually made from carbon steel or high-speed steel. T/f

A

True

34
Q

The roughing tool is used to remove most of the metal on the work piece. T/f

A

True

35
Q

The work piece should always be firmly fastened to the table or base to produce holes that are located accurately. T/f

A

True

36
Q

One of the most important factors in successful band swing is a proper cutting speed t/f

A

True

37
Q

What RPM should’ an engine lathe run when turning a 6 in dlameter piece of
aluminum? Aluminum cutting speed is 200.

A

127

38
Q

What (rpm) speed should you turn a 1 1/2 inch diameter piece of copper in a lathe?
Copper is recommended at 400 SFPM.

A

1018

39
Q

What would be the correct speed (rpm) for a ¾”drill to drill cast iron? Cast iron
cutting speed is 80.

A

407

40
Q

List three of the mounting methods used with a milling machine

A
  1. On the table
  2. In a chuck, or on fixtures
  3. On an arbor
    Between centers
    On fixtures
41
Q

Why is sharpening a milling machine cutter so important?

A
  1. A dull cutter wears more rapidly
  2. A dull cutter does not last as long
42
Q

Name three types of lathes generally used in high production, heavy-duty work

A
  1. Turret lathes
  2. Multiple tool lathes
  3. Multiple spindle lathes
43
Q

Why should you not hold work by hand when drilling?

A

The work could bind and twist causing injury to your hand

44
Q

What is the most important safety rule of all while machining?

A

Wearing eye protection

45
Q

What is a drill drift used for?

A

Removing twist drills, sleeves and sockets

46
Q

T/F High speeds and light feeds are especially recommended for automatic drilling machines where the holes do not exceed four drill diameters in depth.

A

True

47
Q

A taper or bevel at the end of a hole is

A

Countersinking

48
Q

What designates the size of maximum diameter of the work that can be machined in a lathe?

A

Swing

49
Q

What are the 3 types of lathes generally used in high production and heavy duty work?

A

Turret
Multi-tool
Multi-spindle

50
Q

What part of a lathe is where the entire unit that moves lengthwise along the ways
between headstock and tailstock called?

A

Carriage

51
Q

What is the most accurate means of chucking a work piece in a lathe?

A

Four jaw

52
Q

What is used to machine the ends of the work and to machine shoulders in the work?

A

Facing tool

53
Q

Use a dial indicator to set up a_____ Chuck

A

Four jaw

54
Q

What raises work to drill through material without damaging a vise or table?

A

Parallels

Machine Shop (1 decks)

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