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ISE 316 > ISE exam 1: 1-4.3 > Flashcards

ISE exam 1: 1-4.3 Flashcards

1
Q

Product engineering process

A
  1. Product idea
  2. design and prototyping
  3. Specifications and process engineering
  4. Manufacturing and automation
  5. production and monitoring
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2
Q

Tolerance

A

Allowable range of dimensional variation on all features

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3
Q

Unilateral

A

always unbalanced
0.95 +0.10 - 0 1.05 + 0 - 0.10

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4
Q

Bilateral unbalanced

A

0.98 + 0.07 - 0.03

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5
Q

Bilateral balanced

A

1.00 +/- 0.05

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6
Q

Always specify the _____ tolerance that satisfies the functional requirement

A

loosest

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7
Q

Over-specification

A

Closed loops in tolerance graph

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8
Q

under-specification

A

loosely hanging loops in tolerance graph

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9
Q

Least material conditions for hole

A

Larger hole

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10
Q

Least material conditions for shaft

A

smaller shaft

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11
Q

Most material conditions for hole

A

smaller hole

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12
Q

most material conditions for shaft

A

larger shaft

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13
Q

When LMC assign the true position tolerance for a hole to the ____

A

largest diameter

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14
Q

When MMC assign the trust position tolerance for a hole to the _____

A

smallest diameter

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15
Q

When LMC assign the true position tolerance for a shaft to the ____-

A

smallest diameter

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16
Q

When MMC assign the true position tolerance for a shaft to the _____

A

largest diameter

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17
Q

Virtual hole size =

A

Produced hole - TPT MMC

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18
Q

Virtual shaft size =

A

Produced hole + TPT MMC

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19
Q

3 types of fits

A

Clearance, interference, Transition

20
Q

Clearance fit

A

room to move, largest allowable shaft is always smaller than the smallest allowable hole

21
Q

Interference fit

A

Needs “brute force” to move, think of a train wheel on tracks
Smallest allowable shaft is always larger than the largest allowable hole

22
Q

Transition fit

A

Large enough to fit but small enough to hold

23
Q

ANSI fits are always

A

thousandths of an inch

24
Q

clearance equation

A

Hole max - shaft min

25
Q

interference equation

A

Hole min - shaft max

26
Q

as tolerance value goes ____, cost goes ____, but is ____ functional

A

down, down, less

27
Q

as tolerance value goes ____, cost goes ____, but is ____ functional

A

up, up, more

28
Q

4 types of materials

A

Metals, ceramics, polymers, composites

29
Q

2 classifications of metals

A

Ferrous (based on iron) and non-ferrous

30
Q

Steel with carbon content > ____% are classified as cast iron

A

2.1

31
Q

Stainless steel

A

Highly alloyed sheets made of chromium. Provide high corrosion resistance

32
Q

3 classifications of polymers

A

Thermoplastics, elastomers, thermosets

33
Q

Thermoplastics

A

melt when heated and solidify when cooled

34
Q

Thermosets

A

Cannot be remelted. More rigid and brittle than thermoplastics

35
Q

Elastomers (rubber)

A

property to be stretch.

36
Q

Ceramics

A

Generally very hard and rigid, but brittle and limited tensile strength

37
Q

Composites

A

Two or more material phases are combined to achieve desired properties

38
Q

The primary phase of composites is the

A

matrix

39
Q

the embedded phase is the

A

reinforcing agent

40
Q

3 types of chip formation

A

continuous, discontinuous, continuous with build up edge

41
Q

continuous chip formaiton

A

ductile work material, high cutting speeds, low tool chip friction, small feeds and depths

42
Q

discontinuous chip formation

A

brittle work materials, low cutting speeds, large feed and depth of cut, high tool chip friction

43
Q

continuous with built up edge formation

A

ductile work materials, low to medium cutting speeds, friction causes portions of chips to adhere to rake face

44
Q

shear force

A

due to the workpiece90

45
Q

friction force

A

due to the tool

46
Q

Approximately ____% of the energy in machining is converted into heat

A

98

47
Q

High cutting temperatures

A

reduce tool life
produce hoot chips
cause inaccuracies in part dimensions/tolerances

ISE 316 (1 decks)

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