assembly drawings balloons parts lists

8/17/2019 Assembly Drawings Balloons Parts Lists

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Assembly Drawings Assembly Drawings,,

BalloonsBalloons,,and

Parts ListsParts Lists


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A design that has been approved for prototype or

full-scale manufacture requires a set of working

drawings to communicate the object’s geometry toeveryone involved with its manufacture and

assembly.

Working drawings are a complete set ofdocuments that include:

Working rawingsWorking rawings

! Individual part drawings! One or more assembly

drawings

! A parts list


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Assembly rawings Assembly rawings

An assembly drawing shows how all of the

parts of a multi-component design fit together"and are generally depicted as one or more

orthographic projections.

#ne or more full section views are often used

in an assembly drawing to show necessary

internal features.


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$%ample Assembly rawing$%ample Assembly rawing


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&nformation from Assemblies&nformation from Assemblies

! #ne or more views" including sections or au%iliaries

! $nlarged views to show small details

! #verall or specific dimensions needed for assembly

! 'otes on manufacturing processes required forassembly

! (alloons to indicate item numbers

! )arts list or bill of materials *(#+,

Assembly drawings may contain the

following:


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! esign Assembly

! eneral Assembly

! etail Assembly

! $rection Assembly! ubassembly

! )ictorial Assembly

/ypes of Assembly rawings/ypes of Assembly rawings


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Design assemblies are used to

show various relationshipsbetween components.

/he design assembly at the right

shows the kinematic relationship

that e%ists between the flywheel’s 0123 rotation" and the

e%treme angular motion of the

piston cylinder body.

esign Assemblyesign Assembly


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Design assemblies are often made from sketches

during the preliminary phases of a design process

to study the relationships that e%ist between thecomponents before the design is modeled.

esign Assemblyesign Assembly


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A general assembly is the

most common type of

assembly drawing. &t is

displayed as a multiview

drawing and may contain a

section view.General assemblies do

not contain dimensions.

eneral Assemblyeneral Assembly


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etail Assemblyetail Assembly

A detail assembly is a combination of an

assembly view with several of its partsdepicted as dimensioned multiview drawings

on one drawing sheet.

/his practice" though not common" reducesthe number of drawing sheets needed" and

is more appropriate for designs with small

numbers of components.


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$%ample etail Assembly$%ample etail Assembly


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$rection Assembly$rection Assembly! imilar to general assemblies" e%cept

dimensions and fabrication specifications arecommonly included.

! /ypically associated with cabinetry or products

that are made from structural steel.

! 4sed for both fabrication and assembly.


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ubassembly rawingubassembly rawing

5omple% or large

assemblies may becommunicated through

subassembly drawings.

FlashlightSubassembly


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)ictorial Assembly)ictorial Assembly! 4sually depicted as an

isometric or perspective

drawing.

! +ay be rendered to imitate

photographic quality.

! 4ses include:

- Sales promotion

- Customer self-assembly

- aintenan!e pro!edures


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)ictorial assemblies are

often used in catalogs" journal articles" and

advertisements.

/his pictorial issectioned to show

interior details.

)ictorial Assembly rawings)ictorial Assembly rawings


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Exploded

pictorial

assembly

drawings are

commonly used

to show howindividual

components fit

together.

)ictorial Assembly rawings)ictorial Assembly rawings


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(alloons(alloons

A balloon is a

circle thatcontains a

single number"

which is

connected to anassembly

component with

a leader line.


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! All balloons on a drawing should be the same

si6e.

! (alloons should be grouped together in an easy-

to-read pattern.

! (alloon numbers must correspond to item

numbers in a parts list.

! (alloons should not have hori6ontal or vertical

leader lines.

(alloon uidelines(alloon uidelines


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A parts list is a

table that contains

information abouteach of the parts

contained in an

assembly. /he

item numbers

correspond with

the balloon

numbers.

)arts 7ist)arts 7ist


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$%ample )arts 7ist$%ample )arts 7ist


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)arts 7ist &nformation)arts 7ist &nformation

! &tem number 8 from balloons.! 9uantity 8 the number of a particular part needed

for the assembly.! )art or drawing number 8 a reference back to the

detail drawing.! escription 8 usually the part name or complete

description of a purchase part.! +aterial identification 8 the material of the part.

! &nformation about vendors 8 for purchase parts.

&tems commonly found in a parts list include:


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)arts 7ist 7ocation)arts 7ist 7ocation

! Above the title block 8 most common

! 4pper right corner ! 4pper left corner

! A convenient location on the drawing

/he location of a parts list usually depends on

company standards. 5ommon locations

include:


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)arts 7ist 7ocation)arts 7ist 7ocation

assembly drawings balloons parts lists

Documents