Machine shop

Question 1

What should never be worn during machining?

Answer 1

Gloves

Question 2

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

Answer 2

T

Question 3

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

Answer 3

Wearing eye protection

Question 4

3 types of sets of saw blades

Answer 4

Raker
Wavy
Alternate

Question 5

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

Answer 5

Cutting speed

Question 6

Name the 4 advantages of a circular saw

Answer 6

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

Question 7

What are the 2 metal classifications?

Answer 7

Ferrous and Non-ferrous

Question 8

What is the purpose of a center punch?

Answer 8

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

Question 9

What is not a basic layout tool?

Answer 9

Micrometer

Question 10

What is a drill drift used for?

Answer 10

Removing twist drills, sleeves and sockets

Question 11

What do the following stand for:
UNC
UNF
UNEF

Answer 11

Unified Course
Unified Fine
Unified Extra Fine

Question 12

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

Answer 12

Turret lathe

Question 13

What can broaches be classified as?

Answer 13

Planing machines

Question 14

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

Answer 14

Surface grinding

Question 15

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

Answer 15

Lapping

Question 16

Name 4 parts of a drill press:

Answer 16

Base
Head
Spindle
Table

Question 17

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

Answer 17

T

Question 18

Name the 3 parts of a twist drill:

Answer 18

Body
Point
Shank

Question 19

What is the normal angle for a twist drill?

Answer 19

118 degrees

Question 20

(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.

Answer 20

High

Light

Question 21

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

Answer 21

Countersinking

Question 22

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

Answer 22

Work could bind and twist injuring hand.

Question 23

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

Answer 23

Swing

Question 24

Name 4 basic engine lathe parts:

Answer 24

Apron
Compound rest
Tailstock
Ways

Question 25

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

Answer 25

Turret Multi-tool Multi-spindle

Question 26

CNC stands for _____.

Answer 26

Computer numerical control

Question 27

Name 2 types of grinding:

Answer 27

Precision | Non-precision

Question 28

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

Answer 28

Carriage

Question 29

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

Answer 29

Four-jaw

Question 30

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

Answer 30

3.82 x 145 ____________ = 138 RPM 4

Question 31

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

Answer 31

3.82 x 200 ____________ = 127 RPM 6

Question 32

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

Answer 32

3.82 x 400 ____________ = 1018 RPM 1.5

Question 33

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

Answer 33

3.82 x 80 ____________ = 407 RPM .75

Question 34

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

Answer 34

F - 1 revolution

Question 35

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

Answer 35

Facing tool

Question 36

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

Answer 36

5

Question 37

What is used to remove most of the metal?

Answer 37

Roughing tool

Question 38

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

Answer 38

Pitch

Question 39

Use a dial indicator to set up a ____ chuck.

Answer 39

Four-jaw

Question 40

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

Answer 40

F - Headstock

Question 41

What is used for long pieces during boring?

Answer 41

Steady rest

Question 42

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

Answer 42

Taper attachment

Question 43

Name 2 classifications of turret lathes:

Answer 43

Horizontal | Vertical

Question 44

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

Answer 44

Horizontal | Vertical

Question 45

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

Answer 45

Knee-and-column milling machine

Question 46

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

Answer 46

Clean | Oiled

Question 47

Name 3 methods of mounting work on milling machines:

Answer 47

Table Chuck Arbor

Question 48

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

Answer 48

Does not | Rapidly

Question 49

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

Answer 49

Parallels