CAD153- Final Exam

parallelism

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The relation existing between two mating parts with respect to the amount of clearance or interference that is present when they are assembled.

ACTUAL FIT

A measured size.

ACTUAL SIZE

A prescribed difference between the maximum material limits of mating parts.

ALLOWANCE

Size from which the limits of size are derived by the application of allowances and tolerances.

BASIC SIZE

A tolerance in which variation is permitted in both directions from the design size.

BILATERAL TOLERANCE

NAME ONE WELDING JOINT

BUTT, LAP, TEE, OUTSIDE CORNER, EDGE

Theoretically exact surface, plane, axis, center plane, or point from which dimensions for related features are established.

DATUM

The basic size with allowance applied.

DESIGN SIZE

Geometrical characteristic such as diameter, length, angle, or center distance.

DIMENSION

Deviation from the nominal surface

ERROR OF FORM

Any physical portion of an object such as a surface or hole.

FEATURE

NAME ONE TYPE OF WELD

FILLET, SQUARE GROOVE, V GROOVE, BEVEL GROOVE, U GROOVE, J GROOVE, PLUG, FIELD, ALL-ROUND, FLUSH CONTOUR, SPOT, SEAM, FLANGE

The general term used to signify the range of tightness that may result from the application of a specific combination of allowances and tolerances in the design of mating parts.

FIT

Unintentional, unexpected, and unwanted interruptions in the topography

FLAWS

The standard fit FN, stands for what?

FORCE OR SHRINK

That one of the two deviations closest to the basic size.

FUNDAMENTAL DEVIATION

Measurements of profile in a direction normal or perpendicular to the nominal profile

HEIGHTS

Direction of predominant surface pattern

LAY

The maximum and minimum sizes permitted for a feature.

LIMITS OF SIZE

The standard fit LC, stands for what?

LOCATIONAL CLEARANCE

The standard fit LN, stands for what?

LOCATIONAL INTERFERENCE

Largest limit for an external feature and the smallest limit for an internal feature.

MAXIMUM MATERIAL CONDITION

Real surface obtained by instrumental or other means-definable

MEASURED, surface

Intended surface contour, shape and extent- perfect word

NOMINAL

Size designation used for the purpose of general identification.

NOMINAL SIZE

NAME ONE WELDING PROCESS

OXYGEN(SOLDER, BRAZING), SHIELDED(ARC), GAS TUNGSTEN(TIG), GAS METAL ARC(MIG)

WHAT PAGE IN THE ENG BOOK DOES IT SHOW TYPICAL WELD SYMBOLS?

PAGE 623... IN THE 6TH EDITION

Contour of surface measured normal or perpendicular to surface-unless specified

PROFILE

Measured profile with exaggeration of height or space without filtering

PROFILE TOTAL

Representation of a measured real profile

PROFILE, MEASURED

Obtained the same way as measured, but filters are added to pinpoint certain characteristics

PROFILE, MODIFIED

Profile of nominal surface

PROFILE, NOMINAL

Profile of a real surface

PROFILE, REAL

Actual or deviation from nominal

REAL

Fine irregularities of the surface texture resulting from the production process or material condition

ROUGHNESS

Finer irregularities of surface texture

ROUGHNESS

Measured profile with waviness filtered out

ROUGHNESS PROFILE

Average spacing between adjacent peaks

ROUGHNESS SPACING

Topography obtained by filtering out waviness

ROUGHNESS TOPOGRAPHY

The standard fit RC, stands for what?

RUNNING OR SLIDING CLEARANCE

Nominal space measured for surface characteristics

SAMPLING LENGTH

Dist. between specific points on a profile measured parallel to the nominal profile

SPACING

Part of the dimension from which the limits are calculated.

SPECIFIED DIMENSION

Boundary of an object that separates that object from another object, Substance or space-area

SURFACE

Repetitive or random deviations from real

SURFACE TEXTURE

THE SIDE OPPOSITE THE LOCATION OF THE ARROW IS CALLED WHAT?

THE OTHER SIDE

UNLESS OTHERWISE STATED, A WELD PENETRATION IS HOW FAR?

THICKNESS OF PART

The difference between the maximum and minimum size limits on a part.

TOLERANCE

The variation, positive or negative, by which a size is permitted to depart from the design size.

TOLERANCE LIMIT

Topography obtained by measurement

TOPOGRAPHY, MEASURED

The standard fit L T, stands for what?

TRANSITION CLEARANCE OR INTERFERENCE

The relationship between assembled parts when either a clearance or an interference can result, depending on the tolerance conditions of the mating parts.

TRANSITION FIT

The algebraic difference between the maximum limit of size and the corresponding basic size.

UPPER DEVIATION

Profile with roughness and part form parameters removed

WAVINESS PROFILE

NAME ONE ITEM THE WELDING SYMBOL IDENTIFIES

WELD TYPE, WELD LOCATION, WELD PROCESS, WELD SIZE&LENGTH, FINISH AND OTHER INFORMATION

Line of zero deviation and represents the basic size.

ZERO LINE

datum

a surface indicated on the drawing from which measurements can be made

bilateral tolerance

one in which variation is permitted in both directions from the specified dimension

position

target symbol

maximum material condition

the condition of the part feature when it contains the maximum amount of material

limits

the maximum and minimum sizes indicated by a toleranced dimension

tolerance

the total amount by which a dimension may vary

regardless of feature size

where the tolerance of form or position must be met, regardless of where the feature lies within its size tolerance