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3DCS Variation Analyst for CREO

Tolerance Analysis Software fully integrated into PTC CREO CAD Platform


3DCS Fully Integrated in PTC Creo • 3DCS Model is stored in Creo assembly part file

• Automatically Integrated in Windchill

• Utilizes the Creo Assembly Structure

• Support for Creo 3 and 4 • Hybrid Point and Feature Based modeling

• No loss of data through translation. Creo CAD can be used directly

• Measurement Point Coordination between CAD and 3DCS

• Extract and use Creo GD&T and Joints and Constraints


Detailed Creo File Information

• The Creo and 3DCS navigation trees are synced using the Update Model button. There is also a linking

wizard available to help with substitutions or fixing link problems that arise from different versioning of a

part. More information available in the Help File.

• 3DCS requires an assembly structure and must have write access to the top assembly file for storage. It

does not work with single parts.

• Parts must be created on the Creo side before syncing to the 3DCS tree structure. This is required because

3DCS needs a Creo file for each part. 3DCS does not create Creo parts.

• The linking between Creo and 3DCS trees are controlled by the Model Update function and by the linking

wizard. Some preparations in Creo prior to launching 3DCS can greatly simplify the process. See “2.” above.

• DCS part names sync to Creo Part\Feature part names


Large Model Support • 3DCS Leverages the Creo “Representation” menu to allow for better

performance with large models.


What is 3DCS Variation Analyst? CAD based tolerance and process analysis software

Integrated Into: Dassault Systemes CATIA V5-6 CATIA 3DEXPERIENCE Siemens NX PTC Creo

Available also as a CAD neutral stand alone version


What is a Variation Analyst Model? A CAD model that incorporates part tolerances, assembly process and inspection

measurements inside 3DCS software


Why Use 3DCS? Determine how part and assembly tolerances affect the overall build and fit of a product.

Will my current design work? How well? Where should I measure in production? Where will I have manufacturing problems specifically? How will tooling affect my product? Can I change the assembly process to reduce variation? How do I fix variation issues?

Get Answers:


3DCS Inputs Part Geometry –

GD&T and Tolerances

Assembly Sequence –

Moves to assemble the parts

Measurements –

Areas to analyze during simulation


3DCS Outputs High-Low-Mean Sensitivity Analysis – How much does the tolerance range affect the product

GeoFactor Results – How much does the part geometry contribute to the product’s variation

Monte Carlo Simulation - • Quality Metrics – Pp, Cp, Ppk, Cpk –

Methods of measuring variation in production

• Key Contributors – Where is the variation coming from

• Percent Out-of-Spec – How many builds will fail to meet Specifications (non-conformance)

• Range of Variation – How much variation will be in the product (worst case)


3DCS as Part of PLM Design

Simulation

Validation Redesign

Manufacturing

Gap and Flush Objectives Tooling Design

Optimize Tolerances GD&T and Assembly Sequence

Inspection Plan and Measurement Authoring Test Solutions to Control Variation

Use Plant Data to Root Cause Issues

3DCS can be used throughout the product lifecycle to support Dimensional Quality and PLM

Spec Study and Visualization

Monte Carlo Simulation

Sensitivity Analysis What If Studies

Process Capability DB


3DCS in a Closed Loop System

Quality Intelligence Engineering Through Production


3DCS FUNCTIONALITY How does it work


Monte Carlo Analysis Determine if the results of a measurement (specific area) will meet design objectives based on a randomly varied tolerances across a series of simulated product builds.

The statistical output of the simulation is displayed as a histogram showing the frequency that the measurement is out of specifications • Mean • Standard Deviation • Distribution • Selectable Metrics (Pp, Cp, Ppk, Cpk etc…)


HLM Sensitivity A "High-Low-Median", or HLM, Sensitivity Analysis provides information to make improvements to the model. HLM Sensitivity determines which tolerances have the largest contribution per measurement.


GeoFactor Similar to the High-Low-Median sensitivity analysis, GeoFactor examines the effect of each tolerance on a given measurement. Unlike HLM sensitivity, which analyzes the range of a tolerance, GeoFactor analysis examines the contribution of the tolerance based on geometry effect.


USING 3DCS VARIATION ANALYST Using 3DCS


Model Inputs Part Geometry –

• GD&T and Tolerances

Assembly Sequence –

• Moves to assemble the parts

Measurements –

• Areas to analyze during simulation


Spec Study & Visualization Determine Gap and Build Objectives Before Engineering (what is max and min tolerance objectives)

See How Variation Affects the Product’s Appearance (Perceived Quality)


Part Geometry

Nominal Part Geometry, Tolerances and GD&T - Apply Creo Annotations (embedded GD&T) - Point tolerances in 3DCS - Feature tolerances in 3DCS - Tooling tolerances (influence on design)


Creo GD&T \ PMI Extraction and Updating

• 3DCS models can be created faster and with less errors by extracting Creo GD&T • Part and Assembly GD&T \ PMI is supported. • No Re-authoring data


Assembly Sequence

• The Assembly Sequence determines how parts locate to one another and in what order.

• In 3DCS, a "move" defines how a part is located in space.

• Moves are added to the model to represent each step in the build process.

A move reflects how the variation of the locating features is transmitted through to a product.


Measurements

• They aid in understanding the effects of 3D tolerance stack ups.

• Measurements are used to determine how critical dimensions in an assembly are affected by fixture and part tolerances.

• Both points on a surface or the feature itself can be used to define a measurement.

Measurements quantify the variation of the desired output in the model.


Reporting • Push Button Summary of Your Model Inputs and Outputs • Automatically Created in Html or Excel


Additional Features Color Mapping – Use Color Mapping to quickly see trouble areas and communicate with managers and teams Alias Display – Change the names of your model features to make it easier to use, then when you are done, change them back Process Capability Database PCDB – Connect your tolerances to a database of known processes or plant data Embedded GD&T – Use CAD based GD&T to quickly test designs and create models Optimization – Use wizards to optimize and rerun analyses to see the effect of design changes

Specialized Tools


Creo Rendering • 3DCS allows users to visualize extreme Gap and Flush conditions and then

they can be visualized in real time with the Creo Rendering engine

3dcs variation analyst for creo - liveworx.com · what is 3dcs variation analyst? cad based...

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