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ME 009 > final exam from quizlet > Flashcards

final exam from quizlet Flashcards

1
Q

Circles appear as __________ in isometric sketches.

A

ellipses

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2
Q

When making oblique sketches, the length of the _________ dimension is not too important.

A

receding

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3
Q

What is the alternate name for brainwriting?

A

6-3-5 method

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4
Q

The paradigm of _____ is sometimes referred to as design for manufacturability.

A

concurrent engineering

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5
Q

The first constraint usually applied to a new sketch is a _______ constraint, which serves as an anchor to fix the geometry in space.

A

ground

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6
Q

In a sketch, the length of the extrusion or angle of rotation also must be specified. There are several options for defining the length of the extrusion, but the simplest is to specify a _________ extrusion.

A

blind

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7
Q

Adding material to or removing material from the original model can create a more complex model. When material is added, a(n) ________ is created.

A

protrusion

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8
Q

The various protrusions and cuts on the main body of a model are called ____________.

A

features

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9
Q

A blend (loft feature) requires at least _________ profile sketch(es), and the model is formed be a smooth transition between these profiles.

A

two

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10
Q

A __________ feature removes most of the interior volume of a solid model, leaving a relatively this wall of material that closely conforms to the outer surfaces of the original model.

A

shell

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11
Q

A ___________ feature creates a boss or cut by moving a profile along a path.

A

swept

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12
Q

A _____________ is a mathematical representation of a physical object that includes the surfaces and the interior material, usually including a computer-based simulation that produces a visual display of an object as if it existed in three dimensions.

A

solid model

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13
Q

A feature created by the addition of a solid volume to a model is called a(n) ___________.

A

protrusion

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14
Q

A planar sketch that is used to create a solid is called a _____________.

A

profile

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15
Q

A system that allows the user to vary the dimensions of the model is called ___________ solid modeling.

A

parametric

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16
Q

The attributes of features, such as dimensions, that can be modified are called ____________.

A

parameters

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17
Q

A smooth transition of the internal edge created by intersecting surfaces and tangent to both intersecting surfaces is called a _________.

A

fillet

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18
Q

A smooth transition of the external edge created by intersecting surfaces and tangent to both intersecting surfaces is called a ______.

A

round

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19
Q

A boss or cut feature that is bounded by the surfaces swept out in space by a planar profile as it is pulled along a path perpendicular to the plane of the profile is called a(n) ____________.

A

extruded feature

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20
Q

The final task of a reverse engineering project should be to consider potential ____________ of the product.

A

redesign

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21
Q

The most commonly used sets of axes for mass properties analysis calculations are either the Cartesian axes (standard x-, y-, or z-axes) or the ______ axes.

A

centroidal

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22
Q

Similar to the way the computer can solve for the moment of inertia of a complex object, the FEA method is founded on dividing the part into small pieces, which are together called a(n) ______.

A

mesh

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23
Q

Some holes, slots, and cutouts with odd geometries can be made with an operation called _______, in which a long toothed cutting tool is rapidly slid through the workpiece to form a hole or slot.

A

broaching

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24
Q

________ is similar to 3-D printing except that a powdered metal replaces the powdered plastic.

A

Laser sintering

25
Q

The ___________ process uses a rapidly rotating abrasive wheel to remove material form a workpiece very slowly.

A

grinding

26
Q

____________ includes any special tools, fixtures, or other devices needed to create, align, hold, or transport a part during its fabrication.

A

Tooling

27
Q

All casting processes require a ___________ of the desired part.

A

mold

28
Q

In the process known as _____________, thin shelled parts are created from sheets of thin, malleable metal, also known as sheet metal.

A

deep drawing

29
Q

______ is an operation that is used on sheet metals. As with deep drawing, a metal is deformed between a cavity and a closely fitting plunger. The edge of the plunger fits closely to the edge of the cavity, and the metal is cut with a shearing action.

A

Stamping

30
Q

diff between stamping and deep drawing

A

deep drawing is more accurate

31
Q

What is a problem with pictorial representations that is inherent in the use of one view of an object’s three dimensions?

A

distortion of angles

32
Q

diff btw oblique and isometric views

A

isometric is 45 degrees, while oblique is going to be 30 degrees on each side

33
Q

The simplest curve —- a circle or an arc of a circle—appears ______ on a pictorial.

A

elliptical

34
Q

In _____ projection, the image of an object is composed of points projected from individual points on the object onto the viewing plane such that the projection of each point is perpendicular to the viewing plane.

A

orthogonal

35
Q

How many standard or principal views are there?

A

6

36
Q

diff btw isometric, dimetric, and trimetric in their angles

A

isometric = all angles are the same
dimetric = 2 angles are the same
trimetric = all 3 angles are different

37
Q

Although there are no defined rules as to which views must be included or excluded in a formal engineering drawing, there is a preferred configuration—the front, top, and ___ views.

A

right-side

38
Q

what are centerlines?

A

to identify where the center of the circular hole is located on the object.

39
Q

In some parts of Asia and Europe, ___ projection is commonly used. Each viewing plane is behind the object, which means the object is between you and the viewing plane.

A

first-angle

40
Q

When representing features with small radii, the preferred representation would be a presentation where the small rounds are represented as it they were ______.

A

true edges

41
Q

A(n) _______ drawing refers to three types of pictorial drawings: isometric, dimetric, and trimetric.

A

axonometric

42
Q

what is the orthogonal projection?

A

it is when you have multiple views of a 3d object so multiple 2d drawings

43
Q

In an oblique drawing, the depth of the object is shown at a(n) ___________ angle.

A

receding

44
Q

Which technique can be used to create an oblique drawing of an object that has circular features such as holes or cylinders?

A

boxing-in, using a square and marking the centers to create circular holes

45
Q

Perspectives incorporate the concept of ___________- to produce the 3-D shape of an object on the plane of the paper or the computer screen.

A

vanishing points

46
Q

what type of perspective is commonly used in the united states?

A

2 point perspectives for isometric, while the world uses obliques are 1 point

47
Q

diff btw a crop and broken out section view

A

crop is when you move all the material outside of the spline area, while broken out section view only cuts out the part of the spline area while keeping the entire object in view

48
Q

what is an aligned section view?

A
49
Q

One of the main incentives for using section views is to reduce the use of ___________.

A

hidden lines

50
Q

A(n) ___________ allows multiple features, which normally require multiple section views, to be captures on a single view.

A

offset section

51
Q

One way of visualizing a half section is to imagine a part that is cut such that _ of it is removed to reveal the interior detail.

A

one quarter

52
Q

Most drawings conform to the International System of Units (SI), which is metric and uses the _______ as the standard unit; or they conform to U.S. customary units with a standard unit of the decimal inch.

A

millimeters

53
Q

_______________ are used to direct a dimension, note, or symbol to the intended place on a drawing.

A

Leaders

54
Q

When the “inside” dimensions are more important or more critical than the overall dimension, the overall dimension should be identified as a(n) _____________ dimension.

A

reference

55
Q

Baseline dimensioning is often used for CNC machines that work from a ____ coordinate system.

A

rectangular

56
Q

diff btw a countersunk and counterbore hole

A

counterbore is for normal screws

57
Q

What hole is used for flat head and oval head screws?

A

countersunk hole

58
Q

What hole is used for standard screws like hex socket?

A

counterbore

ME 009 (3 decks)

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