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Introduction This guide was created to assist Artists and Engineers, to learn the basics of mesh modelling of non deformable objects with `Blender`. It uses a structured approach to introducing Blenders tools and work-methods. Following the guide should enable you to become familiar with blender and create models from the simplest of parts to complex accurate engineering assemblies and designs. The guide focuses solely on Blenders Mesh Modelling capabilities, it ignores the myriad of animation, texturing and photo-realistic rendering tools and concentrates solely on getting started and producing accurate models suited for both artistic and engineering purposes. The guide was originally made as a series of web pages that documented the design ideas and Blender methods used do design a few of the components I will be making for a rebuild of my CNC router. It has been ported to this .pdf book from the web pages, so some references in the guide will still only relate to the on-line version. The Small Print This guide is provided as a free reference to new and existing Blender users. The contents of the guide are copyright Robert Burke © 2007, but permission is granted for you to store a copy on your computer or print a hard copy for personal use only. You may not use this guide for any commercial purposes without written permission. (I have donated my time and knowledge free to produce the guide, I don`t expect people to make money from it) THIS GUIDE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. Blender - Precision Modelling Guide By: Robert Burke www.rab3d.com - 2 - Contents Page No Introduction 2 Contents 3 Getting Started 4 Overview of Controls 5 Blender Units and Precision 9 Modelling in Blender 11 Modelling a 608 Bearing Part -1 Part – 2. Part – 3 Part – 4 Part – 5 Part – 6 Part – 7 Part – 8 Part – 9 Part – 10 Part – 11 Reference Geometry 13 The Inner and Outer Race 21 Adding the Ball Bearings 30 Modelling the Bearing Cage 35 Detailing the Cage Securing Clasp 46 Modelling the Dust Shield 51 Modelling the Circlip 59 The Low Polygon Bearing 62 Materials and Rendering 68 Constructing a Page Layout 73 The Scale Drawing Layout 79 Modelling a Guide Roller Part – 1 Modelling the `V` Roller 89 Part – 2 The Guide Roller Axle 98 Part – 3 Detailed Thread Profile 109 Part – 4 Laying out the Component Drawing 119 Designing a Casting Part – 1 Positioning the Components 130 Part – 2 The Initial Layout 136 Part – 3 Roller Nut Mounting Brackets 142 Part – 4 Completing the Casting 148 Blender - Precision Modelling Guide By: Robert Burke www.rab3d.com - 3 - Starting Blender There is a wealth of information available on the Internet in the form of manuals, guides and tutorials that cover the full potential of this program. This Guide is intended as a starter for people interested in the creation of mesh models and more specifically, dimensionally accurate mesh models. Appendix 1 gives a short list of useful Internet links. Obtaining and loading Blender The Open Source and freely available creative package Blender can be downloaded from www.blender.org. Once on the site, click the download link to open the download page. Choose the file to suit your operating system and follow the simple installation instructions at the bottom of the download page to install the program. What you see when the program starts When you run blender for the first time you are presented with the default screen. It contains the user preference’s window at the top of the screen. The main 3D work area in the centre of the screen and the buttons window at the bottom of the screen. Blender - Precision Modelling Guide By: Robert Burke www.rab3d.com - 4 - A Quick Overview of the controlls. Relevant sections of the program When you first start modelling, the main two screens are already open, the 3D workspace and the Buttons window. A cube object (1) is in the centre of the 3D view and the window is orientated so you are looking down onto the top of the cube. There is also a Lamp (2) to illuminate the cube and a Camera (3) to output a 2D bitmap of the cube. 3D View: Header Bar At the bottom of the 3D view is blenders View Header Bar. The purpose of each section within the view header is detailed below. 1) Window Type Click on the window type button and a menu will appear showing all the different window types. Each window has a function within the process of 3D modelling, image creation or animation. However our initial interest lies just with the following windows: 3D View: Buttons Window: This contains Blenders control buttons. Outliner: A structured view of objects within the 3D scene and there relationships to each other. Script Window: To run useful add on scripts. 2) Pull up menu A context sensitive menu showing the operations that can be carried out and the keyboard shortcut for the operation. Blender - Precision Modelling Guide By: Robert Burke www.rab3d.com - 5 - ... - tailieumienphi.vn
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