Copyright DASSAULT SYSTEMES 20021 Assembly Design Fundamentals CATIA Training Exercises Version 5...

Copyright DASSAULT SYSTEMES 2002 1

Assembly Design Fundamentals

CATIA Training Exercises

Version 5 Release 10December 2002

EDU-CAT-E-ASM-FX-V5R10


Table of Contents

1. Connector Assembly p. 3 Connector Assembly: Presentation p. 4 Connector Assembly (1): Assembling Component p. 8 Connector Assembly (2): Positioning Components p. 11 Connector Assembly (3): Analyzing the Assembly p. 14 Connector Assembly (4): Editing Part p. 17 Connector Assembly (5): Working with Components p. 20

2. Vice Assembly p. 23 Vice Assembly: Presentation p. 24 Vice Assembly (1): Creating the Structure p. 27 Vice Assembly (2): Positioning Components p. 29 Vice Assembly (3): Editing Parts p. 33 Vice Assembly (4): Inserting Fitting Components p. 36

3. Flexible sub-assemblies p. 41 Flexible sub-assemblies : Presentation p. 42 Flexible sub-assemblies (1) :Assembling Components p. 45 Flexible sub-assemblies (2) :Constrain Full Assembly p. 47 Flexible sub-assemblies (3) :Change configuration p. 49


Connector Assembly

Connector Assembly : Presentation

Connector Assembly (1): Assembling Components

Connector Assembly (2): Positioning Components

Connector Assembly (3): Analyzing the Assembly

Connector Assembly (4): Editing Part

Connector Assembly (5): Working with Components


Master Exercise : Presentation

You will practice concepts learned throughout the course, by building the master exercise and following the recommended process


ExerciseConnector Assembly: Presentation

60 mn

Objectives :

In this exercise you will build the Connector Assembly and modify one of its components

This assembly will be built

You will use :

- Product Structure Tools- Constraints - Compass- Analyze Clash- Part Design in-context of Assembly - Standard tools


Design Intent: Connector Assembly

•Create and name the assembly (Connector Assembly).

•Analyze for interferences between the components and correct the interference by making an opening for the Connector Card Assembly.

•Position each Component and Set constraints between them

•Add a sub-assembly (Connector Card assembly) and two instances of the same part (Connector Shell). Assign Instance Names to the Connector Shells.

opening

2 coincidence constraints

2 instances of the Shell

Connector Card Assembly with

fix-in-space constraint

contact constraint

•Add two instances of a Screw.


Design Process: Connector Assembly

Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly

1

Position the components using constraints.

2

Check for interference.

3

4

Edit the Shell by designing in-context of the assembly

Pattern the Screw.

5


ExerciseConnector Assembly (1) : Assembling Components

In this step you create and name an assembly, insert components, duplicate the shell, assign Instance Names, and save the assembly

15 mn


And now practice in the context of the Connector Assembly



1


2


3

4


Pattern the Screw.

5


Do It Yourself

1- Create a new CATProduct document and set the part number to be Connector Assembly. 2- Add the Connector Card Assembly (CATASMConnector_Card_Assembly.CATProduct) sub-assembly and the Connector Shell (CATASMConnector_Shell.CATPart). 3- Duplicate the Connector Shell component. 4- Assign Instance Names to the Connector Shell components. 5- Save the assembly as Connector Assembly 2.CATProduct.

Inserted components

Duplicate instance of Connector Shell

To avoid looking for the correct folder where the inserted components are stored, begin a Save as with the loaded Document , then Cancel it.Load: Mex1/CATASMConnector_Assembly_1.CATProduct


Exercise Connector Assembly (2) : Positioning Components

In this step you will Fix-in-Space the Connector Card Assembly and set Coincidence and Contact constraints between the Shells and the Connector Card

20 mn


And Now Practice in the Context Of the Connector Assembly

Create and name the assembly, insert components, duplicate the shell , assign Instance Names ,

and save the assembly

1



2


3

4


Pattern the Screw.

5


Do It Yourself

1- Fix-in-space the Connector Card Assembly. 2- Set an axial coincidence between corresponding holes of the Top Shell and the Connector Card. 3- Set a contact between the top face of the card and the inside face of the Top Shell. 4- Set an axial coincidence between corresponding holes of the Bottom Shell and the Connector Card.

5- Set a contact between the underside face of the card and the inside face of the Bottom Shell. 6- Save the assembly as Connector_Assembly 3.CATProduct.

Inside Face

Load: Mex2/CATASMConnector_Assembly_2.CATProduct


ExerciseConnector Housing (3) : Analyzing the Assembly

In this step you will check for interference between the Connector Card Assembly and Connector Shells

15 mn





1


2

Check for interference.Check for interference.

3

4


Pattern the Screw.

5


Do It Yourself

1- Analyze for clash between the Connector Card Assembly and Connector Shells. 2- Do not make any changes to the assembly at this time. 3- Save the assembly as Connector Assembly 4.CATProduct for use in the next step.

Connector Card Assembly

Connector Shell



ExerciseConnector Assembly (4) : Editing Part

In this step you will eliminate the interference between the Connector Card Assembly and Connectors Shells by editing the Connector Shell in-context of the assembly

30 mn




1Position the components using

constraints.

2


3

4



Pattern the Screw.

5


Do It Yourself

Dimensions for the pocket in the Connector Shell

Connector Shell showing the new pocket

1- No-show the Bottom Shell. 2- Modify the Connector Shell to suppress the clash with the Connector Card Assembly. 3- Save the Connector Shell as Connector Shell 5. 4- Save the assembly as Connector Assembly 5.CATProduct.



ExerciseConnector Assembly (5) : Working with Components

In this step you will add and constrain a Screw and duplicate the Screw and its constraints using a pattern

10 mn





1


2


3

4


Pattern the Screw.Pattern the Screw.

5


Do It Yourself

Screw

Pattern

1- Add the Screw part. 2- Set an axial coincidence between corresponding hole of the Top Shell and the Screw. 3- Set a contact between the face of the Top Shell and face of the Screw. 4- Use the rectangular pattern in the Connector Shell to duplicate the Screw 5- Save the assembly as Connector Assembly 6.CATProduct.

To avoid looking for the correct folder where the inserted components are stored, begin a Save as with the loaded Document , then Cancel it.



Vice Assembly

Vice Assembly : Presentation

Vice Assembly (1): Creating the Structure

Vice Assembly (2): Positioning Components

Vice Assembly (3): Editing Parts

Vice Assembly (4): Inserting Fitting Components from catalogs


ExerciseVice Assembly: Presentation

Objectives :

In this exercise you will build the Vice Assembly, modify two of its components and complete the fitting by inserting components from catalogs

70 mm

This assembly will be built

You will use : - Product Structure Tools- Constraints - Compass- Catalog Browser- Part Design in-context of the assembly - Standard tools


Design Intent: Vice Assembly

•Create and name the root assembly (Vice Assembly) and its sub assemblies (RotatingComponent, FixedComponent and AxisAssembly)

•Design holes in both jaws in order to allow fitting

•Position the Components (constrain them as shown below)

•Add Components inside appropriate assemblies :

- Axis and Axis Nut in AxisAssembly- 2ndStaticJaw, Static Jaw , Jaw Holder Flange (2 ones) and Movable Jaw Holder in FixedComponent- Movable Jaw in Vice Assembly

•Browse GeneralEnd catalog in order to find and insert fitting elements in appropriate assemblies

Fixe

dCom

pone

nt

RotatingComponent

Movable Jaw


Design Process: Vice Assembly

Create and name the assembly, insert

components, assign Instance Names, and save the assembly

Position the components using constraints

Edit both Static Jaws by designing

in context of the assembly

Insert fitting components from catalog and instantiate and constrain them in

appropriate assemblies

1

2

3

4


ExerciseVice Assembly (1) : Creating the Structure

In this step you create and name a root assembly and its sub-assemblies, insert components, assign Instance Names, and save all the assemblies

15 mn


Do It Yourself

1- Create a new CATProduct document,set the part number to be ViceAssembly and save it.2- Create the structure above with New Product and New Component commands.3- Insert following parts in their destination assemblies : in AxisAssembly : CATASMAxisNut + CATASMAxis in RotatingComponent : CATASMBigScrew in FixedComponent : CATASM2ndStaticJaw + CATASMJawHolderFlange (take 2 instances of it) + CATASMMovableJawHolder + CATASMStaticJaw in ViceAssembly : CATASMMovableJaw4- Set instance names of Jaw Holder Flange to “Right Flange” and “Left Flange”5- Save the assembly as CATASMViceAssembly 2.CATProduct in StudentFolder.

New ProductsNew

Component

Load: Addex1/CATASMViceAssemblyStep1.CATProduct


ExerciseVice Assembly (2) : Positioning Components

In this step you create constraints to position components relatively to each other in the correct active assemblies.

20 mn


Do It Yourself (1/3)

1- In AxisAssembly , create coincidence and contact between highlighted elements

Coincidence

Contact

2- In RotatingComponent , create coincidence and contact between highlighted elements and save the active assembly as “RotatingComponent3”in StudentFolder

Coincidence

Line Contact




3- In FixedComponent,Fix in space MovableJawHolder and constrain geometric elements as shown and save the active assembly as “FixedComponent3” in StudentFolder

Fix in space

= Offsets of 0mm with same orientation (8)

= Contacts (4)



4- In ViceAssembly, constrain geometric elements as shown and save the active assembly as “CATASMViceAssemblyStep3” in StudentFolder

Two contacts

coincidence

contact


ExerciseVice Assembly (3) : Editing parts

20 mn

In this step you design two parts in context of the assembly in order to allow the fitting



2- In 2ndStaticJaw

a- create a hole (diameter = 11mm, up to next) in the front face of the Static Jaw (a counterbored one)

b- set the hole concentric to one of the holes in parts behind

c- create a sketch based on the same front face(name it PatternPoints) and draw 3 points concentric to

last 3 holes in parts behind

d- create a user pattern of the hole using “PatternPoints” for the Positions and keeping specifications of

the object to pattern

e- save the new part under another name (CATASM2ndStativJaw4.CATPart) under StudentFolder

Concentricity

Concentricity

Concentricity

Concentricity

“PatternPoints” Sketch1- Set wireframe rendering style for transparency



Do It yourself (2/2)

3- In StaticJaw

a- create a hole (diameter = 11mm, up to next) in the front face of the Static Jaw (a counterbored one)

b- get it concentric to one of the holes in parts behind

c- create a sketch based on the same front face and draw 3 points concentric to last 3 holes in parts

behind, rename the Sketch “PatternPoints”

d- create a user pattern of the hole using “PatternPoints” for the Positions and keeping specifications for

selected object

e- save the part under another name (CATASMStaticJaw4.CATPart)

Concentricity

Concentricity

Concentricity

Concentricity

4- Set the FixedComponent active and save it as “FixedComponent4.CATProduct” under StudentFolder5- set back the “shading with edges”rendering style

“PatternPoints” Sketch


ExerciseVice Assembly (4) : Inserting Fitting Components

In this step you will insert fitting elements from a catalog. You will also constrain and instantiate them in their destination assemblies

15 mn



1- In FixedComponent

we want to insert and instantiate screws with

fitting dimensions

a- To determine diameters and lengths of

inserted screws, measure diameters of

threaded holes and thickness that screws

have to go through

Note carefully the measured diameters and

distances because you will need them to

make queries on the end chapter of a

catalogCrossed thickness

Crossed thickness

Threaded Holes

Inserted Screws




b- Browse GeneralEnd.catalog to select and

insert Hexagonal Socket Head Screws in

FixedComponent : make queries in chapter to

get those conditions respected

- diameters of selected screws must be

equal to diameters of threaded holes

they go into

- lengths must be superior or equal to

(crossed thickness +15mm)

Insert the selected screws in FixedComponent

c- Instantiate and constrain as many time as

needed (reuse Pattern if possible) inserted

screws



2- In ViceAssembly we Want to insert Outer

Retaining Ring that fit to the big Screw

a- to determine what ring you will insert,

measure the diameter of the groove

Note carefully the measured diameter

because you will need it to make a query on

the end chapter of the catalog

Diameter to measure

Groove Diameter of retaining ring



b- Browse GeneralEnd catalog to select and

insert an Outer Retaining Ring in

ViceAssembly : select the ring in order to

get this conditions respected

- the Groove Diameter of the selected

retaining ring must be equal to the

measured diameter

c- Insert the selected ring in Vice Assembly

and constrain it to the Big screw

coincidence

contact


Flexible Assemblies

Flexible Assemblies : Presentation

Flexible Assemblies (1): Assembling Components

Flexible Assemblies (2): Constrain Full Assembly

Flexible Assemblies (3): Change Configuration


ExerciseFlexible Assemblies : Presentation

Objectives :

In this exercise you will build the Full Assembly

and use flexible /rigid sub-assemblies

You will use :

- Product Structure Tools- Constraints - Use flexible / Rigid sub-assemblies command to create ‘some configurations’

25 mm


Design Intent: Flexible Assemblies

All elements you need to complete exercise :sub-clamp.CATProduct.Clamp-pad.CATPart.

Skills needed :•Insert existing components to create a assembly

•Duplicate a sub-assembly

•Constraint a assembly

•Making a product flexible in order to drive dimension


Design Process: Flexible Assemblies.

1

3Change configuration of one sub-assembly

Constrain the assembly

2

Create and name the assembly, insert components from sub-clamp.CATProduct and clamp-pad


ExerciseFlexible Assemblies (1) : Assembling Components

In this step you create and

name an assembly, insert components,

duplicate assembly and save

the full assembly

3 mn


Do It Yourself

Create a new assembly:•Name it full-clamp•Insert components•Duplicate sub-clamp•Save it

Load : sub-clamp.CATProduct clamp-pad.CATPart


ExerciseFlexible Assemblies (2) : Constrain Full Assembly

In this step you constrain full-clamp

15 mn


Do It Yourself

Constrain the full assembly in design intent:Fix in-space clamp-pad

Set surface-contact constraints following the picture

Set axial coincidence and points coincidence.


ExerciseFlexible Assemblies (3) : Change configuration

In this step with flexible/Rigid command,

you simulate two configurations

for sub-clamp assembly

- First configuration:’Open’ (value=60 mm)

- Second configuration:’Close’ (value=72.7 mm)

7 mn


Do It Yourself

1. Make flexible one instance of sub-clamp

2. Edit and change numerical value of the offset constraintMeasure the distance to obtain the ‘Close’ configuration

Load : full-clamp.CATProduct

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