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Jig and Fixture Design

Edward Hoffman

Chapter 21

Tool Materials - all with Video Answers

Educators


Chapter Questions

Problem 1

Match the property with the definition that best describes it.
a. The ability to absorb sudden applied loads or shocks.
b. The measure of tool life, cutting speed, and surface finish.
c. Resistance to being pulled apart.
d. The property that is the direct opposite of toughness.
e. The ability of a material to resist abrasion.
f. The measure of resistance to penetration.
g. The resistance of forces applied in opposite and parallel directions.
1. Hardness
2. Toughness
3. Wear resistance
4. Machinability
5. Brittleness
6. Tensile strength
7. Shear strength

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00:55

Problem 2

What two factors control the properties of metallic tool materials?

Hunza Gilgit
Hunza Gilgit
Numerade Educator
01:02

Problem 3

What are ferrous metals?

Narayan Hari
Narayan Hari
Numerade Educator

Problem 4

What are the three types of carbon steel used for jigs and fixtures?

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06:11

Problem 5

Briefly describe the effects each of these elements has on alloy steel:
a. Aluminum
b. Boron
c. Carbon
d. Chromium
e. Cobalt
f. Copper
g. Lead
h. Manganese
i. Molybdenum
j. Nickel
k. Phosphorus
1. Silicon
m. Silicon and manganese
n. Sulfur
o. Tungsten
p. Vanadium

Maryam Riaz
Maryam Riaz
Numerade Educator

Problem 6

Explain the meaning of the following types of steel:
a. 1020 steel
b. 10105 steel
c. 4340 steel

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02:01

Problem 7

To which class of tool steels do W, O, A, and M belong?

Hunza Gilgit
Hunza Gilgit
Numerade Educator

Problem 8

What nonferrous tool materials are common to jig and fixture design?

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02:27

Problem 9

Which nonferrous material best fits the listed descriptions?
a. Lightest
b. Heaviest
c. One-third the weight of steel
d. Low-melt alloy
e. Highest cutting speed
f. Most widely used

Jennifer Stoner
Jennifer Stoner
Numerade Educator

Problem 10

What nonmetallic tool materials are common to jig and fixture work?

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Problem 11

Which nonmetallic tool material best fits the listed descriptions?
a. Must be sealed to prevent swelling
b. Can be drilled and tapped
c. Normally used for nests
d. Requires special bushings
e. Uses ground walnut shells as a filler
f. Good for secondary action clamping

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00:55

Problem 12

What two elements must be considered in designing a part to be heat-treated?

Hunza Gilgit
Hunza Gilgit
Numerade Educator

Problem 13

What are the primary design errors?

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Problem 14

Who should be consulted about a tool material's problem?

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