Large Assemblies

PTC Creo 2.0

Paul Sagar

Director, PTC Creo Product Management

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• Large Assemblies Management

improvements in PTC Creo 2.0 – Lightweight Graphics

– Smart Retrieval methods

• Practices and tips overview

• PTC Creo 2.0 Assembly updates – Selection improvements

– Placement enhancements

– Structure handling

– Track Changes

– Mass properties and Units

Agenda

What’s New PTC Creo 2.0

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• The challenge – Need to load large models quickly

– Need only a pieces of detail

• New capabilities in PTC Creo 2.0 – Fast Lightweight 3D Thumbnails

– Selective Drill-Down

• RMB

• Double Click

Lightweight Graphics

Focus faster on models of interest

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• The Challenge – Need to design in scope of only partial context

– But no pre-defined simprep

• New in PTC Creo 2.0 – Open Subset: define simprep on-the-fly

– Filter by size

• Can set by reference size part

• Internal/External

– Selective

• Advanced settings similar

to simprep definition

Open Subset

Filter design context on-the-fly

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Large Assembly Management and Simplification

Practices and Tips Overview

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Practices and Tips Overview

Top down design basics

1 Conceptual design 2 Preliminary product structure

3 Capture design intent >>Skeletons

5 Manage interdependencies

4 Communicate design intent >>Data Sharing Features

6 Populate assembly

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• Use Skeletons for global references – Capture outgoing refs in Publish Geom

features per intent

– Use (Ext.) Copy Geom. features in

sub-models

• Use Motion Skeletons in early stages – Create schematic assembly up-front

– Attach design models to skel bodies

– Automatically share ref geom.

• Maximize simplification and predictability

Practices and Tips Overview

Top Down Design – Mechanisms

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Practices and Tips Overview

Simplified representations

0

10

20

30

40

50

Retrieval Time (s)

0

500

1000

1500

2000

2500

Memory Usage (mb)

Graphics Only

Representation

~25%

Geometry Only

Representation

~ 50%

Master Only

Representation

100%

Single PTC Creo Parametric Component Database

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• Separate file/object – Publish partial scope of an assembly

w/o impact to original one

• Design in suited context – Distribute different stakeholders with

relevant content

• Auxiliary designs – E.g. Manufacturing jigs, add-on devices, etc.

Practices and Tips Overview

External Simpreps

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• Capture only required parts/refs

• Replace large/protected* models

by part w/ Shrinkwrap feature – *Recommended for secured-IP

communication needs

– NOT for Save as Shrinkwrap

• Fully associative – References to Shrinkwrap will be

automatically forwarded upon Replace

back to original model/s

• Use “Quick” option to utilize graphic

card performance

Practices and Tips Overview

Replace by Shrinkwrap

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• Default Envelopes – Substitute sub-assemblies (individuals)

by representing surfaces

• Customized Envelopes – Available in Simprep definition

– Substitute free combination of components

from any level by representing surfaces

• Do not reference envelopes! – Ref forwarding is not supported from envelopes to original model/s.

– For sustainable references – use

Replace by Shrinkwraps

Practices and Tips Overview

Envelopes

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Simplification methods - Summary

Preferred use and typical performance impact

Usage Intent

Method Structure

exposure

Graphic

display

quality

Memory

(% of master) Simplified

Viewing Referencing Authoring

Exclude None None 0 N N N

Boundary box /

symbolic Full Box/symbol 5 Y N

Non-graphic

data only

LWG thumbnail First level Rough 10-25 Y N N

LWG Drill-down/

Graphic rep Partial to Full Partial to Full 25-50 Y N N

Envelope Full Rough 10-25 Y Non associative N

Replace by

Shrink-wrap None Rough 10-50 Y Associative N

Subset/ESR Partial Full in

selected

subset

According to

subset Y Y Y

Master Full Full 100 N Y Y

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PTC Creo 2.0

Assembly Updates

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• Support kinematic drag in simplified reps

• Automatically create backups for new placements – auto_backup_new_placement_refs

• Create backups for legacy components – RMB> Backup references

Placement Enhancements

Backup placement references

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• 3D box selection – Dynamically updates with model tree

• 2D marquee selection – Parts filter

• Gestures – Right>Left –

include intersected parts

– Left>Right –

include only framed parts

Selection Improvements

2D and 3D usability enhancements

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• Intuitively adjusts per available DOF

• Snap along drag – Hold Shift key while dragging in proximity

• Drag/Rotate along ref – RMB> Drag along geometry

Placement Enhancements

3D Dragger

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• New relationships – Plane/plane angle - Plane/line angle

– Plane/line normal - Plane/line parallel

– Plane/point distance - Plane/line distance

– Line/line parallel

– Line/point distance

– Line/line angle

– Line/line distance

– Line/line coplanar

– Point/point distance

Placement Enhancements

More intuitive constraints

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• Enable/disable constraints sets by parameter – PTC_CONSTRAINTS_SET

• Manipulate position by parameter – Use e.g. in family tables

– Show in model-tree

– Designate for PDM

Placement Enhancements

Parameter driven placement

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• Intuitive drag-&-drop

• Auto-expand nodes when

hover-on

• One-shot restructure and

reorder

Structure Handling

Reorder and Restructure

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• Quick access from model-tree

• Locate by name

• Locate by popular statuses

• Queries history in drop-down

• Add to selection

• Filter tree

Structure Handling

Simple Search

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• Show assembly level components changes

• Color-coding in model-tree and graphics

• Accept/Reject changes from PTC Creo Direct

Track Changes

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• Single access-point to rename assembly and sub-models

• Similar to Save-as dialog

Batch Rename

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• Using Assign instead of separate file (‘From File’) – Stored as model parameters

– Legacy files supported and converted automatically

– File> Prepare> Model properties> Mass properties> change

• Relative to CSYS/COG

• Indication for out-of-date (yellow status) – Config for check upon save

• New parameters (PTC Creo 2.0/M050): – Alternative CSYS name, Transformation

matrix

Mass Properties Improvements

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• Convert entire assembly and its sub-models in one shot

• Config enabled – allow_multiple_units_conversion YES / No*

Unit Conversion