Module 27Surface Modeling Overview

PTC Authorized Training Center - Basic Design increo elements / pro 5.0

Objectives

After completing this module, you will be able to: Describe the capabilities and uses for a surface modeling environment. Describe the parametric and freeform surface modeling paradigms. Describe how the parametric and freeform surface modeling paradigms can be integrated. Discuss surface modeling terminology.

Introduction to Surfacing

The figures in this slide illustrate examples of models that have been developed using Pro/ENGINEERsurface modeling tools.

Surface modeling enables you to design the modelsthat have:

Geometric shapes with high curvatures, or curvaturein two directions.

Fluid, sculpted, or organic shapes. Shapes that cannot be designed using solidfeatures.

Smooth shapes with tangent or curvature continuity. Surface Modeling Scenarios

Helmet

Camera

Faucet

Hedge Trimmer

Surface Modeling Uses

You can use surface modeling for a variety of situations.

You use surface modeling to:

Design enclosures. Visualize and develop conceptual designs. Design thin-walled components with complexshapes.

Fix problems in imported surface data. Design tooling. Redefine and manipulate solid models. Define complex fillets. CD Player

Casting Manifold Molding

Surface Modeling Paradigms

In comparison to solid modeling, the surface modeling paradigm uses very different approaches, techniques,and workflow.

Parametric Surface Modeling:

Driven by dimensions, parameters, andmathematical equations.

Surface Modeling course. Freeform Surface Modeling:

Driven by intuition, feel, and aesthetic requirements. Freeform Surface Modeling Course.

Choosing appropriate method:

Design Input Design Intent Designers background

Sheet Panel

Door Interior

Freeform Overview

The Style tool is a powerful and comprehensive surface modeling tool.

Creating a Freeform Curve

Style Tool

Freeform Curves Surfaces

Creating the Surface

Creating a Second Freeform Curve

Blending Surface Modeling Paradigms

Many product shapes can be constructed using a combination of parametric and freeform surface features.

Designing a Ring

Blending the two paradigms Many product shapes can utilize a combination of:

Parametric surface models with freeform curvesand surfaces.

Freeform surface models with parametric frameworkand relations.

Designing a Freeform Surface

Parametric Framework

Surfacing Terms

Surface modeling terms are important to understand because they are used throughout this course.

Surfaces

Quilt Surface Patch Solid Surface Datum Planes

Edges

Surface edge One-sided Two-sided

Solid edge

Viewing a Surface

Surface Quilt

Solid Surface and Edge

Surface Edge

Module 28Advanced Selection

PTC Authorized Training Center - Basic Design increo elements / pro 5.0

Objectives

After completing this module, you will be able to: Understand advanced chain selection. Understand advanced surface selection.

Advanced Chain Selection

You can select multiple edges in Pro/ENGINEER using different types of chains to increase efficiency andfeature robustness.

Chain types:

Intent chain One-by-one Tangent chain Surface loop Surface loop from to Boundary From-to Boundary loop Multiple chains

Selection methods:

Direct with mouse Chain dialog box

Intent Chain

Surface Loop

Advanced Surface Selection

You can select multiple surfaces in Pro/ENGINEER using different types of sets.

Surface set types:

Individual Surfaces Solid Surfaces Intent Surfaces Seed and Boundary Loop Surfaces Exclude Surfaces

Selection methods:

Direct with mouse Chain dialog box

Selecting Multiple Individual Surfaces

Selecting a Surface Loop

Module 29Basic Surfacing Tools

PTC Authorized Training Center - Basic Design increo elements / pro 5.0

Objectives

After completing this module, you will be able to: Create Extrude, Revolve, and Fill surfaces. Create sweep surfaces with open trajectories. Create parallel blend surfaces. Create general blend surfaces.

Creating Surface Extrude Features

Create extruded surface features from 2-D sketches.

Extrude surfaces perpendicular to the sketchingplane.

Extrude open section sketches. Extrude closed section sketches.

Capped ends

Extruded Open Section Sketch

Extruded Surface, Open Ends, Closed Section Sketch Extruded Surface, Capped Ends, Closed Section Sketch

Creating Surface Revolve Features

Create revolved surface features from 2-D sketches.

Revolve a section about an axis of revolution in asketching plane.

Select different axes of revolution:

First sketched Geometry Axis Existing Axis Existing Straight Curve or Edge

Revolve open section sketches. Revolve closed section sketches.

Capped ends Viewing a 2-D Sketch

Same Revolved Sketch using Different Axes of RevolutionRevolving a Closed Section Sketch, Open

versus Capped Ends

Creating Fill Surfaces

You can fill a sketch to create a planar surface.

Sketch rules:

Must use a sketched curve.

Can be internal or external. Must be closed.

Can have multiple loops. Can be any shape. Can reference other geometry.

Filling a Sketch

Fill Surface Containing Multiple Loops

Creating Sweep Surfaces with Open Trajectories

A sweep surface feature consists of a sketched section that sweeps, or traverses, along a trajectory.

Sweeping a Closed Sketch Along an Open Trajectory

Components of a sweep feature:

Trajectory

Selected or sketched Start point

Sketched section

Closed or open Crosshairs mark the trajectory

Attributes:

Open Ends Capped Ends

Sweeping an Open Sketch Along an Open Trajectory

Creating Parallel Blend Surfaces

A parallel blend surface feature blends sections along a dimensioned, linear distance.

Blend Sections

Components of a blend feature:

Sections:

At least two required. Toggle section. Equal number of entities per section. Line up start points.

Direction. Depth.

Blend Depths

Creating General Blend Surfaces

A general blend rotates sections about the X, Y, and Z-axes of a Sketcher coordinate system and translatessections along the Z-axis.

Viewing the General Blend Sections

Section requirements:

Translation distance along Z-axis. Rotation angles about X, Y, andZ-axes.

120 maximum

Sketched coordinate system. System lines up coordinate systems:

Typically sketched at center ofsection.

Sketched Section

Module 30Helical Sweeps

PTC Authorized Training Center - Basic Design increo elements / pro 5.0

Objectives

After completing this module, you will be able to: Understand the theory behind helical sweeps. Utilize helical sweeps for surfaces.

Understanding Helical Sweeps Theory

Helical sweeps can be used to create springs, threads, or other helical geometry.

Can be protrusions, cuts, or surfaces. Helical sweep components:

Sketch profile Sketch section Pitch value

Helical sweep options:

Pitch type Cross-section angle Helix direction

Helical Geometry

Threads Cut Into a Part Model Spring

Utilizing Helical Sweeps for Surfaces

Helical sweep surfaces are typically used to create datum curves and other construction geometry.

Uses include:

Construction geometry

Typically used to create other geometry Trim/Merge with other surfaces

Datum curve construction

Create helical or spiral curves

Helical Surface

Helical Curve Spiral Curve

Module 31Creating and Editing Solids using Quilts

PTC Authorized Training Center - Basic Design increo elements / pro 5.0

Objectives

After completing this module, you will be able to: Thicken quilts. Solidify quilts to add and remove material, as well as patch material. Offset surfaces using the Replace option.

Thickening Surface Quilts

With the Thicken tool, you can offset a selected quilt to create or remove material.

Thickening a Surface

Basic controls:

Add material Remove material Thickness value Flip direction

Thickening options:

Thicken type Normal to surface Automatic fit Controlled fit

Excluded Surfaces

Adding or Removing Material Thickening a Bottle

Solidifying Quilts to Add Material

You can use the Solidify tool to add solid material to a model, based on a surface quilt.

To be solidified for adding material, a quilt must definea closed volume.

An enclosed quilt. An open quilt surrounded by existing solid material.

Original Surface Quilt

Solidified Surface Quilt

Adding Material by Solidifying a Quilt

Solidifying Quilts to Remove Material

You can use the Solidify tool to remove solid material from a model, based on a surface quilt.

To be solidified for removing material, a quilt mustdefine a volume to remove from the model:

An enclosed quilt. An open quilt bounded by existing solid material. An open quilt overlapping the model: Must pass completely through.

A datum plane.

Removing Material using a Quilt

Removing Material using a Datum Plane Removing Material using an Enclosed Quilt

Solidifying Quilts to Replace Material

You can use the Solidify tool to add and remove solid material simultaneously, based on a surface quilt.

Viewing the Quilt

Commonly referred to as Patch. Choose to keep material on either side. Add and remove material simultaneously from multiple

surfaces. Quilt boundaries must lie on the surfaces.

Replaced Material

Offsetting Surfaces using the Replace Option

Using the Replace option in the Offset tool, you can replace a single solid surface with a quilt.

Uses:

Add material. Remove material. Simultaneously add and remove material.

By default, the quilt is consumed by the replacefeature.

Keep replace quilt.Offset using Replace that Adds Material

Offset using Replace that Removes Material Offset using Replace that Adds and Removes Material