Deck 22: Tooling and Moldmaking

Question 1

What is often used to provide strong, lightweight support for tools?

A) epoxies
B) foams
C) silicones
D) polyurethanes

Answer 1

B

Question 2

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 2

B

Question 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 3

C

Question 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

Question 5

This image depicts the metal displacement process of ____.    

A) hobbing
B) etching
C) electroforming
D) electrical-discharge

Question 6

Hobbing is usually used for making ____.

A) multi-cavity molds
B) single die cavities
C) steel tools
D) chromium tools

Question 7

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
C) electroforming
D) electric-discharge

Question 8

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
B) 1:2
C) 1:4
D) 1:5

Question 9

A metal displacement process that is forms shallow cavities or designs is ____.

A) hobbing
B) etching
C) electroforming
D) electric-discharge

Question 10

Hobs are often made from oil-hardened tool steels containing a high percentage of____.

A) nickel
B) aluminum
C) chromium
D) copper alloy

Question 11

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

Question 12

Wooden and plaster tooling are now being replaced by ____ tooling.

A) honeycomb
B) aluminum
C) steel
D) plastics

Question 13

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

Question 14

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

Question 15

According to Table 22-2, which tooling material is lightweight but has poor dimensional ability?

A) wood
B) plaster
C) copper alloy
D) steel

Question 16

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

Question 17

An important master pattern material from which metal or polymer skin master molds are produced is ____.

A) plaster
B) wood
C) metal
D) alloys