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1. Although the U.S. tool, die, and industrial mold industry has been in decline, the introduction of ____ technology is
expected to rejuvenate the industry.
a.
multicavity injection molds
b.
CAMM
c.
custom shops
d.
engraving technology
ANSWER:
b
2. In tooling operations, the terms ____are often used interchangeably.
a.
jigs and fixtures
b.
molds and dies
c.
jigs and dies
d.
molds and jigs
ANSWER:
a
3. Pictured here is ____ whose work is carried out with precision.
a.
a CAD operator
b.
a cooling system operator
c.
a die maker
d.
injector personnel
ANSWER:
c
4. Part of the manufacturing cost of plastics is the cost of “special fixtures” which can be used to aid in machining with
functions such as ____.
a.
removing flash
b.
removing molded parts
c.
drilling jigs
d.
holding parts for cooling
ANSWER:
c
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5. Table 22-1 shows that steel tooling materials are feasible for ____.
a.
prototype runs
b.
> 1000 number of parts
c.
10-100 number of parts
d.
temporary runs
ANSWER:
b
6. Wooden and plaster tooling are now being replaced by ____ tooling.
a.
honeycomb
b.
aluminum
c.
steel
d.
plastics
ANSWER:
d
7. What is often used to provide strong, lightweight support for tools?
a.
epoxies
b.
foams
c.
silicones
d.
polyurethanes
ANSWER:
b
8. An important master pattern material from which metal or polymer skin master molds are produced is ____.
a.
plaster
b.
wood
c.
metal
d.
alloys
ANSWER:
a
9. According to Table 22–2, which tooling material is lightweight but has poor dimensional ability?
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a.
wood
b.
plaster
c.
copper alloy
d.
steel
ANSWER:
a
10. Machine processing of the toolmaking operation is facilitated by ____ systems controlling individual computer
numerically controlled (CNC) machine tools.
a.
CAMM
b.
CAM
c.
CIM
d.
CAD
ANSWER:
c
11. What is the usual ratio between the pattern and the cavity of a duplicating machine which is a specially modified
vertical milling machine that cuts duplicate molds from a master pattern?
a.
1:1
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b.
1:2
c.
1:4
d.
1:5
ANSWER:
a
12. Hobs are often made from oil-hardened tool steels containing a high percentage of____.
a.
nickel
b.
aluminum
c.
chromium
d.
copper alloy
ANSWER:
c
13. Hobbing, etching, electroforming, and electrical-discharge machining are ____ processes used in making molds in
which no cutting tools are involved.
a.
tool making
b.
mold casting
c.
metal-displacement
d.
die casting
ANSWER:
c
14. Hobbing is usually used for making ____.
a.
multi-cavity molds
b.
single die cavities
c.
steel tools
d.
chromium tools
ANSWER:
a
15. This image depicts the metal displacement process of ____.
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a.
hobbing
b.
etching
c.
electroforming
d.
electrical-discharge
ANSWER:
a
16. A metal displacement process that is forms shallow cavities or designs is ____.
a.
hobbing
b.
etching
c.
electroforming
d.
electric-discharge
ANSWER:
b
17. In ____, an accurate mandrel of plastics, glass, wax, or various metals is used as a master to electrically deposit the
metallic ions from a chemical solution.
a.
hobbing
b.
etching
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c.
electroforming
d.
electric-discharge
ANSWER:
c