1. Assembly Design Fundamentals
CATIA Training
Exercises
Assembly Design Fundamentals
Version 5 Release 10 December 2002
EDU-CAT-E-ASM-FX-V5R10
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2. Table of Contents Connector Assembly p. 3 Vice Assembly p. 23
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
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
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
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3. 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
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4. Master Exercise : Presentation
You will practice concepts learned throughout the course, by building the master exercise and following the recommended process
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5. Connector Assembly: Presentation
Exercise
Connector Assembly: Presentation
60 mn
Objectives :
In this exercise you will build the Connector Assembly and modify one of its components
You will use : Product Structure Tools - Constraints - Compass - Analyze Clash - Part Design in-context of Assembly - Standard tools
This assembly will be built
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6. Design Intent: Connector Assembly
2 instances of the Shell
contact constraint
Connector Card Assembly with fix-in-space constraint
opening
2 coincidence constraints
Create and name the assembly (Connector Assembly).
Add a sub-assembly (Connector Card assembly) and two instances of the same part (Connector Shell). Assign Instance Names to the Connector Shells.
Position each Component and Set constraints between them
Analyze for interferences between the components and correct the interference by making an opening for the Connector Card Assembly.
Add two instances of a Screw.
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7. Design Process: Connector Assembly
Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly 1 2
Position the components using constraints.
Check for interference. 3 4
Edit the Shell by designing in-context of the assembly 5
Pattern the Screw.
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8. Connector Assembly (1) : Assembling Components
Exercise
Connector Assembly (1) : Assembling Components
15 mn
In this step you create and name an assembly, insert components, duplicate the shell, assign Instance Names, and save the assembly
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9. 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 2 1
Position the components using constraints.
Check for interference. 3 4
Edit the Shell by designing in-context of the assembly 5
Pattern the Screw.
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10. Do It Yourself
Inserted components
Duplicate instance of Connector Shell
1- Create a new CATProduct document and set the part number to be Connector Assembly Add the Connector Card Assembly (CATASMConnector_Card_Assembly.CATProduct) sub- assembly and the Connector Shell (CATASMConnector_Shell.CATPart) Duplicate the Connector Shell component Assign Instance Names to the Connector Shell components Save the assembly as Connector Assembly 2.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.
Load: Mex1/CATASMConnector_Assembly_1.CATProduct
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11. Connector Assembly (2) : Positioning Components
Exercise
Connector Assembly (2) : Positioning Components
20 mn
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
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12. And Now Practice in the Context Of the Connector Assembly1 2
Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly
Position the components using constraints.
Check for interference. 3 4
Edit the Shell by designing in-context of the assembly 5
Pattern the Screw.
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13. Do It Yourself
Inside Face
1- Fix-in-space the Connector Card Assembly Set an axial coincidence between corresponding holes of the Top Shell and the Connector Card Set a contact between the top face of the card and the inside face of the Top Shell Set an axial coincidence between corresponding holes of the Bottom Shell and the Connector Card Set a contact between the underside face of the card and the inside face of the Bottom Shell Save the assembly as Connector_Assembly 3.CATProduct.
Load: Mex2/CATASMConnector_Assembly_2.CATProduct
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14. Connector Housing (3) : Analyzing the Assembly
Exercise
Connector Housing (3) : Analyzing the Assembly
15 mn
In this step you will check for interference between the Connector Card Assembly and Connector Shells
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15. And now practice in the context of the Connector Assembly1 2
Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly
Position the components using constraints. 3
Check for interference. 4 5
Edit the Shell by designing in-context of the assembly
Pattern the Screw.
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16. Do It Yourself
Connector Card Assembly
Connector Shell
1- Analyze for clash between the Connector Card Assembly and Connector Shells Do not make any changes to the assembly at this time Save the assembly as Connector Assembly 4.CATProduct for use in the next step.
Load: Mex3/CATASMConnector_Assembly_3.CATProduct
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17. Connector Assembly (4) : Editing Part
Exercise
Connector Assembly (4) : Editing Part
30 mn
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
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18. And now practice in the context of the Connector Assembly2
Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly 1
Position the components using constraints. 3
Check for interference. 4
Edit the Shell by designing in-context of the assembly 5
Pattern the Screw.
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19. Do It Yourself
Dimensions for the pocket in the Connector Shell
Connector Shell showing the new pocket
1- No-show the Bottom Shell Modify the Connector Shell to suppress the clash with the Connector Card Assembly Save the Connector Shell as Connector Shell Save the assembly as Connector Assembly 5.CATProduct.
Load: Mex4/CATASMConnector_Assembly_4.CATProduct
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20. Connector Assembly (5) : Working with Components
Exercise
Connector Assembly (5) : Working with Components
10 mn
In this step you will add and constrain a Screw and duplicate the Screw and its constraints using a pattern
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21. And now practice in the context of the Connector Assembly1 2
Create and name the assembly, insert components, duplicate the shell , assign Instance Names , and save the assembly
Position the components using constraints. 3
Check for interference. 4
Edit the Shell by designing in-context of the assembly 5
Pattern the Screw.
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22. Do It Yourself
Screw
Pattern
To avoid looking for the correct folder where the inserted components are stored, begin a Save as with the loaded Document , then Cancel it.
1- Add the Screw part Set an axial coincidence between corresponding hole of the Top Shell and the Screw Set a contact between the face of the Top Shell and face of the Screw Use the rectangular pattern in the Connector Shell to duplicate the Screw Save the assembly as Connector Assembly 6.CATProduct.
Load: Mex5/CATASMConnector_Assembly_5.CATProduct
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23. 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
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24. Vice Assembly: Presentation
Exercise
Vice Assembly: Presentation
70 mm
Objectives :
In this exercise you will build the Vice Assembly, modify two of its components and complete the fitting by inserting components from catalogs
You will use : - Product Structure Tools - Constraints - Compass - Catalog Browser - Part Design in-context of the assembly - Standard tools
This assembly will be built
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25. Design Intent: Vice Assembly
Movable Jaw
FixedComponent
RotatingComponent
Create and name the root assembly (Vice Assembly) and its sub assemblies (RotatingComponent, FixedComponent and AxisAssembly)
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
Position the Components (constrain them as shown below)
Design holes in both jaws in order to allow fitting
Browse GeneralEnd catalog in order to find and insert fitting elements in appropriate assemblies
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26. Design Process: Vice Assembly1
Create and name the assembly, insert components, assign Instance Names, and save the assembly 2
Position the components using constraints 3
Edit both Static Jaws by designing in context of the assembly 4
Insert fitting components from catalog and instantiate and constrain them in appropriate assemblies
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27. Vice Assembly (1) : Creating the Structure
Exercise
Vice Assembly (1) : Creating the Structure
15 mn
In this step you create and name a root assembly and its sub-assemblies, insert components, assign Instance Names, and save all the assemblies
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28. Do It Yourself
New Products
New Component
1- Create a new CATProduct document,set the part number to be ViceAssembly and save it Create the structure above with New Product and New Component commands 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 : CATASMMovableJaw 4- Set instance names of Jaw Holder Flange to “Right Flange” and “Left Flange” 5- Save the assembly as CATASMViceAssembly 2.CATProduct in StudentFolder.
Load: Addex1/CATASMViceAssemblyStep1.CATProduct
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29. Vice Assembly (2) : Positioning Components
Exercise
Vice Assembly (2) : Positioning Components
20 mn
In this step you create constraints to position components relatively to each other in the correct active assemblies.
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30. Do It Yourself (1/3)
2- In RotatingComponent , create coincidence and contact between highlighted elements and save the active assembly as “RotatingComponent3”in StudentFolder
1- In AxisAssembly , create coincidence and contact between highlighted elements
Coincidence
Coincidence
Contact
Line Contact
Load: Addex2/CATASMViceAssemblyStep2.CATProduct
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31. Do It Yourself (2/3)
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)
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32. Do It Yourself (3/3)
4- In ViceAssembly, constrain geometric elements as shown and save the active assembly as “CATASMViceAssemblyStep3” in StudentFolder
Two contacts
contact
coincidence
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33. Vice Assembly (3) : Editing parts
Exercise
Vice Assembly (3) : Editing parts
20 mn
In this step you design two parts in context of the assembly in order to allow the fitting
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34. Do It Yourself (1/2) 1- Set wireframe rendering style for transparency
“PatternPoints” Sketch
Concentricity
Concentricity
Concentricity
Concentricity
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
Load: Addex3/CATASMViceAssemblyStep3.CATProduct
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35. Do It yourself (2/2)
“PatternPoints” Sketch
Concentricity
Concentricity
Concentricity
Concentricity
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)
4- Set the FixedComponent active and save it as “FixedComponent4.CATProduct” under StudentFolder
5- set back the “shading with edges”rendering style
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36. Vice Assembly (4) : Inserting Fitting Components
Exercise
Vice Assembly (4) : Inserting Fitting Components
15 mn
In this step you will insert fitting elements from a catalog. You will also constrain and instantiate them in their destination assemblies
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37. Do It Yourself (1/4)
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 catalog
Inserted Screws
Crossed thickness
Crossed thickness
Load: Addex4/CATASMViceAssemblyStep4.CATProduct
Threaded Holes
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38. Do It Yourself (2/4)
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
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39. Do It Yourself (3/4)
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
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40. Do It Yourself (4/4)
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
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41. Flexible Assemblies Flexible Assemblies : Presentation
Flexible Assemblies (1): Assembling Components
Flexible Assemblies (2): Constrain Full Assembly
Flexible Assemblies (3): Change Configuration
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42. Exercise Flexible 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
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43. Design Intent: Flexible Assemblies
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
All elements you need to complete exercise :
sub-clamp.CATProduct.
Clamp-pad.CATPart.
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44. Design Process: Flexible Assemblies.1
Create and name the assembly, insert components from sub-clamp.CATProduct and clamp-pad
Constrain the assembly 2
Change configuration
of one sub-assembly 3
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45. Exercise Flexible Assemblies (1) : Assembling Components
In this step you create and
name an assembly, insert components,
duplicate assembly and save
the full assembly
3 mn
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46. 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
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47. Exercise Flexible Assemblies (2) : Constrain Full Assembly
In this step you constrain full-clamp
15 mn
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48. 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.
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49. Exercise Flexible 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
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50. Do It Yourself Make flexible one instance of sub-clamp
Edit and change numerical value of the offset constraint
Measure the distance to obtain the ‘Close’ configuration
Load : full-clamp.CATProduct
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