Advanced Assembly Design

8/12/2019 Advanced Assembly Design

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Pro/Engineer Training

21-Mar-14 HTMT - EDS 1

Advanced

Assembly

Design


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Topics Covered:

Layout Design

Automatic Assembly

Skeleton Assembly

Simplified Reps.

Creating Part in an Assembly

Assembly Management


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Layout - 2D non-parametric sketch of design

- Engineering Notebook

Layout Data:

Sketched geometry

Design Notes

Global datum features for automatic assy

Global Dimensions and parameters

Global Relations

Layout Design


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Steps involved in Layout Design

Initialize the notebook (layout)

Sketch the design layout

Label components with balloons

Create global dimensions, parameters and relations

Declare notebook to other notebooks for parametric valuesCreate global datum features for auto assy.

Layout Design


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Advantages

Contains most of the engineering data of the design

Allows designers to access and control for several

models from one central location

It can drive any number of models and drawings

Ensures proper fits and sizes

Layout Design


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Two Steps must be taken to get automatic assembly.

. Create a layout with Global datum planes.

. Create the parts with the datum in the correct position and

declare these datum to be equal to datum in layout

Automatic Assembly

Advantage

. Easy to manage assembly constraints.

. Reduces poorly constrained assembly.


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Skeleton AssemblySkeleton Part:

define the overall shape(envelope) of the assembly.

skeleton part is created in assembly mode.

made of all datum and surface features.

components are directly assembled to the skeleton.

the mass of the assembly will not be affected

multiple_skeletons_allowed YES/NO

Number of skeleton per assembly


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Advantages:

reduces the number of parent-child dependencies for the

assembly.

components can be moved by modifying the skeletonany or all the parts can be removed without affecting the

other components.

able to have two and three dimensional motion occur in the

assembly.

Skeleton Assembly


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allow you to simplify a view of a design

one of the large assembly management technique

all simplified reps are based upon a Master Reps

reduces regeneration, retrieval, display time of assembly

it supports both TOP-DOWN and BOTTOM-UP designapproaches

Simplified Representations


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Types of Reps:

Master Reps

Graphics Reps

Geometry Reps



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Master Reps

always reflects fully detailed assembly, includingall of its assembly members

you can do all the assembly operations in this rep.

by default the assembly will be in master rep.



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Graphics Reps

contains information for display only.you cant modify or reference this rep for assembly

operations.

assembly operations are not possible.

display is depends on save_model_display value



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Geometry Reps

provides complete geometry of the assembly

useful for measurements and mass property

calculations

you cant reference this rep for assemblyoperations.


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Advantages:

Control in members of an assembly are retrievedinto session and displayed

Speeds up the regeneration and display process.

Reduces time taken for retrieval of the assembly


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Designing a part in assembly

We can create parts, sub-assemblies and bulk item in a assembly

mode.

Types of parts to be created in assembly:a. Solid Model (Regular part model)

b. Sheet metal (Regular sheet metal part)

c. Intersect (intersection of two or more parts)d. Mirror (mirror of existing part)


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Designing a part in assembly

Limitations in creating Intersect part:

you cannot move the resulting partyou cannot use harness parts to create a part by

intersection

you cannot retrieve the part until the assembly to

which it belongs is in memory


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Assembly Management

Modify Sub-assembly and

Restructure

Assembly Dimensions

Move, Copy and Pattern

Assembly Features

Assembly Info

Simplified reps

Assembling Concept

Blocks

Using Layers

Feature and Component

suppression

Display Control

Advanced Assembly Design

Documents

Transcript of Advanced Assembly Design