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IED > Unit 7 > Flashcards

Unit 7 Flashcards

1
Q

Aligned Dimension

A

A system of dimensioning which requires all numerals, figures, and notes to be aligned with the dimension lines so that they may be read from the bottom (for horizontal dimensions) and from the right side (for vertical dimensions).

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2
Q

Baseline Dimensioning System

A

System of dimensioning in which all dimensions are placed from a datum and not from feature to feature. Also referred to as Datum Dimensioning.

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3
Q

Chain Dimensioning

A

Also known as point-to- point dimensioning where dimensions are established from one point to the next.

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4
Q

Limit Dimensions

A

The largest and smallest possible boundaries to which a feature may be made as related to the tolerance of the dimension.

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5
Q

Location Dimension

A

A location dimension that defines the relationship of features of an object.

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6
Q

Reference Dimension

A

A dimension, usually without a tolerance, used for information purposes only. A reference is a repeat of a given dimension or established from other values shown on a drawing. Reference dimensions are enclosed in ( ) on the drawing.

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7
Q

Datum Dimensioning

A

A dimensioning system where each dimension originates from a common surface, plane, or axis. Also known as baseline dimensioning.

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8
Q

Unidirectional Dimension

A

A dimensioning system which requires all numerals, figures, and notes to be lettered horizontally and to be read from the bottom of the drawing sheet.

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9
Q

Tolerance

A

The acceptable amount of dimensional variation that will still allow an object to function correctly..

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10
Q

Nominal Size

A

The designation of the size established for a commercial product.

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11
Q

Bilateral Tolerance

A

A tolerance in which variation is permitted in both directions from the specified dimension.

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12
Q

Allowance

A

The tightest possible fit between two mating parts.

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13
Q

Clearance Fit

A

Limits the size of mating parts so that a clearance always results when mating parts are assembled.

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14
Q

Interference

A

The amount of overlap that one part has with another when assembled.

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15
Q

American National Standards Institute (ANSI)

A

A private, non-profit organization that coordinates the development and use of a voluntary consensus standards in the United States.

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16
Q

Technical Writing

A

A type of expository writing that is used to convey information for technical or business purposes.

17
Q

American Society of Mechanical Engineers (ASME)

A

A professional engineering organization that is known for setting codes and standards for mechanical devices in the United States.

18
Q

Parts List

A

A list of materials or parts specified for a project. Also referred to as a bill of materials or BOM.

19
Q

International Organization for Standardization (IOS)

A

This is a worldwide organization that creates engineering standards.

20
Q

Decision Matrix

A

A tool used to compare design solutions against one another, using specific criteria.

21
Q

Market Research

A

The activity of gathering information about consumers’ needs and preferences.

22
Q

Auxillary View

A

A view that is used to show features that are located on an inclined surface in true size and shape.

23
Q

Section Lines

A

Thin lines used in a section view to indicate where the cutting plane line has cut through material.

24
Q

Broken-out Section

A

A section of an object broken away to reveal an interior feature for a sectional drawing.

25
Q

Working Drawings

A

Drawings that convey all of the information needed to manufacture and assemble a design.

26
Q

Full Section

A

A sectional drawing based on a cutting plane line that extends completely through an object.

27
Q

Detail View

A

A view that is used to show a magnified view of features that are too small to adequately specify in another view.

28
Q

Part Drawing

A

A drawing that contains all the information for making one part of the design.

29
Q

Half Section

A

A sectional drawing based on a cutting plane line that cuts through one-quarter of an object. A half section reveals half of the interior and half of the exterior.

30
Q

Section View

A

A view that is used to show details not apparent on the exterior of the part.

31
Q

Cutting Plane Line

A

A line drawn on a view where a cut was made in order to define the location of the imaginary section plane.

32
Q

Blind Hole

A

A hole that does not go completely through the workpiece.

33
Q

Taper

A

Gradual diminution of width or thickness in an elongated object.

34
Q

Counterbore

A

A cylindrical recess around a hole, usually to receive a bolt head or nut.

35
Q

Tapped holes

A

has internal threads

36
Q

Countersink

A

A conical-shaped recess around a hole, often used to receive a tapered screw.

37
Q

Subassembly

A

`an assembly put into a larger assembly; useful withmany complex parts

IED (9 decks)

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