Machine shop Flashcards

1
Q

What should never be worn during machining?

A

Gloves

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2
Q

T/F Never use compressed air without asafety nozzle to clean machines or clothing.

A

T

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3
Q

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

A

Wearing eye protection

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4
Q

3 types of sets of saw blades

A

Raker
Wavy
Alternate

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5
Q

What is one of the most important factors in successful band sawing?

A

Cutting speed

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6
Q

Name the 4 advantages of a circular saw

A

Burr-free mill finish
Extreme accuracy
Close tolerances
Safe cutting operations

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7
Q

What are the 2 metal classifications?

A

Ferrous and Non-ferrous

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8
Q

What is the purpose of a center punch?

A

Makes indentation for drill point in center to start drilling procedure.

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9
Q

What is not a basic layout tool?

A

Micrometer

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10
Q

What is a drill drift used for?

A

Removing twist drills, sleeves and sockets

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11
Q

What do the following stand for:
UNC
UNF
UNEF

A

Unified Course
Unified Fine
Unified Extra Fine

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12
Q

Which lathe is equipped with a multi-sided tool holder to which a number of different cutting tools can be attached?

A

Turret lathe

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13
Q

What can broaches be classified as?

A

Planing machines

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14
Q

The process often used for the final finishing to close dimensions of a part is called ____.

A

Surface grinding

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15
Q

A process where a high degree of precision and surface finish is needed is called _____.

A

Lapping

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16
Q

Name 4 parts of a drill press:

A

Base
Head
Spindle
Table

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17
Q

T/F Twist drills are usually made from carbon steel and high speed steel.

A

T

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18
Q

Name the 3 parts of a twist drill:

A

Body
Point
Shank

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19
Q

What is the normal angle for a twist drill?

A

118 degrees

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20
Q

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

A

High

Light

21
Q

A taper or bevel at the end of a hole is _____.

A

Countersinking

22
Q

Why should you NOT hold a work piece by hand during drilling?

A

Work could bind and twist injuring hand.

23
Q

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

A

Swing

24
Q

Name 4 basic engine lathe parts:

A

Apron
Compound rest
Tailstock
Ways

25
Q

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

A

Turret
Multi-tool
Multi-spindle

26
Q

CNC stands for _____.

A

Computer numerical control

27
Q

Name 2 types of grinding:

A

Precision

Non-precision

28
Q

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

A

Carriage

29
Q

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

A

Four-jaw

30
Q

What is the lathe RPM for a piece of mild steel @ 145 SPM @ 4” diameter?

A

3.82 x 145
____________ = 138 RPM

     4
31
Q

What is the lathe RPM for a piece of aluminum @ 200 SPM @ 6” diameter?

A

3.82 x 200
____________ = 127 RPM

     6
32
Q

What is the lathe RPM for a piece of copper @ 400 SPM @ 1.5” diameter?

A

3.82 x 400
____________ = 1018 RPM

     1.5
33
Q

What is the lathe RPM for a piece of cast iron @ 80 SPM @ .75” diameter?

A

3.82 x 80
____________ = 407 RPM

     .75
34
Q

T/F Feed is the distance a tool advances into work 1/2 revolution of the headstock spindle.

A

F - 1 revolution

35
Q

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

A

Facing tool

36
Q

In practical straight turning between centers, the cutting edge of the tool should be set at about __ degrees above center.

A

5

37
Q

What is used to remove most of the metal?

A

Roughing tool

38
Q

What is the distance from a point on a screw thread to a corresponding point on an adjacent thread?

A

Pitch

39
Q

Use a dial indicator to set up a ____ chuck.

A

Four-jaw

40
Q

T/F For right handed threads, carriage travels towards the tailstock.

A

F - Headstock

41
Q

What is used for long pieces during boring?

A

Steady rest

42
Q

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

A

Taper attachment

43
Q

Name 2 classifications of turret lathes:

A

Horizontal

Vertical

44
Q

What are the 2 classes of the knee-and-column?

A

Horizontal

Vertical

45
Q

What is used more frequently in tool-and-die shops than any other type?

A

Knee-and-column milling machine

46
Q

Accuracy and durability of the machine depend on it being kept _____ and well _____.

A

Clean

Oiled

47
Q

Name 3 methods of mounting work on milling machines:

A

Table
Chuck
Arbor

48
Q

A dull cutter (does/does not) last as long and wear more (rapidly/slowly).

A

Does not

Rapidly

49
Q

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

A

Parallels