ToolingU_Chapter 4 Vocab

Question 1

A substance that has been intentionally added to a metal to improve its properties. This often improves machinability

Answer 1

Additives

Question 2

An organization that issues general classification standards for iron and steel. They are responsible for assigning machinability ratings to a wide variety of materials.

Answer 2

American Iron and Steel Institute

Question 3

What does AISI stand for?

Answer 3

American Iron and Steel Institute

Question 4

What is B-1112 steel?

Answer 4

A particular grade of steel that acts as the standard for machinability ratings. B-1112 steel has a 1.00 machinability rating.

Question 5

What does concentric mean?

Answer 5

of or denoting circles, arcs, or other shapes that share the same center, the larger often completely surrounding the smaller.
having a common center. concentric circles. having a common axis

Question 6

A white, brittle metal with a pinkish tinge. This may be added to steel to improve machinability

Answer 6

Bismuth

Question 7

The main hardening element in steel.

Answer 7

Carbon

Question 8

The heating of metal within a carbon-rich environment increases carbon levels on the metal surface. This creates a hardened exterior shell.

Answer 8

Case Hardening

Question 9

An imaginary line that runs through the center of a cylindrical workpiece and around which the workpiece rotates. These are 90 degrees angle to a lather headstock

Answer 9

Centerline

Question 10

The shaping of metal at temperatures much lower than the metal’s molten state. This is done a room temperature.

Answer 10

Cold Working

Question 11

What does Cycle Time tell you?

Answer 11

The time it takes to perform a single task. Cycle time may refer to the time it takes to make on part or to perform one step in a process

Question 12

The distance the cutting tool plunges into the workpiece. This indicates the amount of material being removed by one pass of the cutting tool.

Answer 12

Depth of Cut

Question 13

What does Ductility/Ductile mean?

Answer 13

A material’s ability to be drawn, stretched, or formed without breaking. Ductility is more common in softer metals.

Question 14

A turning operation that removes material from the end of the rotating cylindrical part. These operations which are programmed in sfm, are usually performed to establish a part’s length.

Answer 14

Facing

Question 15

The rate at which the cutting tool travels along the length of the workpiece. This measures the linear movement.

Answer 15

Feed

Question 16

What are Free-Machining Steels?

Answer 16

Free-machining steels may include added bismuth or sulfur.

Question 17

The unit of power used to describe machine strength. More of this allows the spindle to exert a greater amount of force.

Answer 17

Horsepower

Question 18

A work-holding device with movable jaws that uses pressurized liquid to increase its clamping force and rigidity.

Answer 18

Hydraulic-Operated Chucks

Question 19

What does rigidity mean?

Answer 19

The inability to be bent or be forced out of shape

Question 20

What does Ipm stand for?

Answer 20

Inches per minute. The distance in inches that the entire tool advances in one minute.

Question 21

The measurement of feed on the lathe.

Answer 21

Inches Per Revolution

Question 22

The measurement of feed of a rotating cutting tool on the lathe

Answer 22

Ipm

Question 23

What does Ipr stand for?

Answer 23

Inches per revolution. The distance in inches that the tool advances during one complete revolution.

Question 24

A substance that is unintentionally present in a metal and often has undesirable properties. This is harder than the metal itself and reduces machinability.

Answer 24

Inclusions

Question 25

A superalloy made of nickel and chromium that is designed to perform well in extreme environments. This is very difficult to machine and resists both oxidation and corrosion

Answer 25

Inconel

Question 26

A bluish-white metal that is very soft and ductile.

Answer 26

Lead

Question 27

The ease with which a cutting process is able to machine a material is rated on a scale with 1.0 as the standard. When this is below one, it indicates that the material is more difficult to machine, and a rating above one indicates a material is more easily machined

Answer 27

Machinability

Question 28

A hole-making process that makes a round hole at any location on a part that deviates from the part's centerline.

Answer 28

Off-center Turning/Drilling/Milling

Question 29

A work-holding device with movable jaws that uses air pressure to increase its clamping force and rigidity. These are safer at higher speeds than traditional chucks

Answer 29

Pneumatic-Operated Chucks

Question 30

An angle formed by the face of the tool and a line parallel to the floor when viewed from the side facing the end of the workpiece. This angle affects cutting forces and contact between the tool and the workpiece.

Answer 30

Rake Angle

Question 31

An angle is formed by the surface of the workpiece and the bottom end of the cutting tool. This influences the tool's wear and cutting-edge strength.

Answer 31

Relief Angle

Question 32

The area on a workpiece where a cutting tool cuts and separates the workpiece into smaller sections. This is sometimes created during work-hardening processes

Answer 32

Shear Region

Question 33

A pale, yellow, brittle element.

Answer 33

Sulfur

Question 34

An alloy consisting of numerous alloying elements that are very expensive and designed to perform well at elevated temperatures.

Answer 34

Superalloy

Question 35

The degree of smoothness of a part's surface after it has been manufactured. This is the result of the surface roughness, waviness, and flaws remaining on the part.

Answer 35

Surface Finish

Question 36

The process of cutting long, spiraling grooves externally into a workpiece.

Answer 36

Threading

Question 37

Increasing the hardness of a metal by bending or shaping. This would include cold working and case hardening.

Answer 37

Work Hardening