Copycat Gettingstarted

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    CopyCAD

    Getting Started

    By Delcam plc

    Issue 5.0 20/02/03 09:08

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    Information contained in this guide is subject to changewithout notice and does not represent a commitment by

    Delcam plc. The software described in this guide is

    furnished under licence agreement and may be used orcopied only in accordance with the terms of such licence.

    No part of this guide may be reproduced or transmitted inany form or by any means, electronic or mechanical,

    including photocopying and recording, for any purposewithout the express permission of Delcam plc.

    Program 1996 2003 Delcam plc

    Important NoticeDelcam plc has no control over the use made of thesoftware described in this guide and cannot accept

    responsibility for any loss or damage howsoever caused

    as a result of using the software. Users are advised that all

    the results from the software should be checked by a

    competent person, in accordance with good qualitycontrol procedures.

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    CopyCAD Getting Started Contents i

    ContentsIntroduction 1

    Overview.......................................................................................1Printing the Getting Started Tutorials .................................. 1

    Alloy Wheel Tutorial 3Alloy Wheel Tutorial - Overview..................................................3

    What Does This Tutorial Show?....................................................3Importing the Digitised Point Data ................................................ 5

    Before you begin ................................................................. 6

    Manipulating the View ........................................................8

    Tidying up the Scan Data .............................................................. 8

    Using the Triangulation wizard ...................................................10

    Opening the Triangulation wizard ..................................... 10

    Limiting the Triangulated Model.......................................15Deleting the Vertical Edge.................................................18

    Deleting models...........................................................................19Processing the Points Manually...................................................20

    Generating Scanlines......................................................... 20

    Offsetting the Model..........................................................21

    Limiting the Model............................................................23

    Deleting the Vertical Edge.................................................28Tolerancing the Model.......................................................29

    Stripping the Scanlines ...................................................... 31Generating a Triangle Model.............................................32

    Deleting the Triangles on the Base .................................... 33

    The Surfacing Process ................................................................. 35

    Generating Curves from Boundaries..................................35

    Creating Cross Section Curves .......................................... 37Creating a Curve Network................................................. 38

    Generating a Surface using Curves .................................... 40Creating a Surface using Guidepoints................................42

    Shading the Surfaces .........................................................44

    Reversing a Surface...........................................................44

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    ii Contents CopyCAD Getting Started

    Creating more Surfaces .....................................................45

    Completing the Model.................................................................48Saving the Surfaces ..................................................................... 49

    Saving the Session.......................................................................50

    Summary .....................................................................................51

    Surfacing Tutorial 53Surfacing Tutorial - Overview..................................................... 53

    What Does This Tutorial Show?..................................................54Importing the Triangle Data ........................................................ 55

    Manipulating the View ...................................................... 56Deciding the Surfacing Strategy ..................................................56

    How do I Surface the Buggy?............................................ 56

    Creating the Four-Sided Surfaces ................................................57How Can I Create Surface Boundaries?.............................58

    Tips for Sketching Surfaces...............................................58Sketching the Four-Sided Surfaces .................................... 59

    Basic Principles of Surfacing.............................................66Creating Curves...........................................................................67

    Importing Curves...............................................................67

    Sketching the Bonnet Boundaries ...................................... 68

    Generating the Inlet Wall Curves.......................................70

    Creating the Bonnet Trimmed Surface.........................................74Creating the Air Inlet Surfaces ....................................................76

    Measuring the Air Inlets .................................................... 76Opening PS-Surfacer ......................................................... 78

    Creating an Extruded Surface ............................................ 79

    Delete the Wireframe Curves.............................................82

    Extend the Base Surface .................................................... 82

    Create the Fillet Surfaces...................................................84Checking the Model ..........................................................88

    Returning to CopyCAD ..................................................... 88Saving the Surfaced Buggy Model .............................................. 89

    Saving the CopyCAD Session ..................................................... 89

    Summary of Tutorial ................................................................... 90

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    CopyCAD Getting Started Introduction1

    Introduction

    OverviewThis "Getting Started" is intended as a guide to new users of CopyCAD.It contains two tutorials, which show you step-by-step how to producecomplex CAD surfaces from digitised point data.

    In the first "Alloy Wheel Tutorial" you are shown how to prepare point

    data for an alloy wheel, triangulate it and create a few basic surfaces.

    In the second "Surfacing Tutorial", you build up your understanding of

    CopyCADs surfacing techniques to create a CAD model of a car bonnet.

    You are also recommended to make full use of the CopyCAD ReferenceOn-line Help: this guide is designed as a supplement to help you in

    "getting started".

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    CopyCAD Getting Started Alloy Wheel Tutorial 3

    Alloy Wheel Tutorial

    Alloy Wheel Tutorial - OverviewThis "Getting Started: Alloy Wheel" tutorial is intended as a starting pointfor new users of CopyCAD. It shows the two main stages in creating asurfaced model from point data:

    Creating a triangulated model from a points file Surfacing the triangulated model

    The digitised data can come from conventional co-ordinate measuring

    machines, tracing machines or laser scanners, and it is assumed that you

    already know how to acquire the original point data.

    This tutorial describes two ways to carry out the first stage. Firstly, you

    are taken through the process using the Triangulation wizard. This asksyou questions about the points file and then triangulates the model based

    on your answers.

    Secondly, the tutorial describes the stages needed to process the file

    manually. This will help you understand CopyCADs processes,including scanline generation, tolerancing, filtering, offsetting and

    triangulation.When you have created your triangulated model, you can start surfacing

    the model. Surfacing is covered in more detail in the second tutorial in

    this guide, "Getting Started: Surfacing".

    What Does This Tutorial Show?Here is the original point data that you will start with. It is one spoke in

    an Alloy Wheel:

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    4 Alloy Wheel Tutorial CopyCAD Getting Started

    There are four main stages in generating surfaces from point data:

    1. Importing the digitised data.2. Processing the data, including generating a Scanline Structure,

    offsetting the Scanlines to account for the probe radius andreducing the number of points.

    3. Generating a triangle model.4. Generating the surfaces.

    The tutorial will go through each of these stages, to guide you through the

    process of surfacing the alloy wheel model. At the end of this tutorial,

    you will have produced the following surfaces:

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    CopyCAD Getting Started Alloy Wheel Tutorial 5

    Importing the Digitised Point DataAfter starting CopyCAD, load in the dig