Introduction to AutoCAD 2011- P9

Introduction to AutoCAD 2011- P9: The purpose of writing this book is to produce a text suitable for studentsin Further and/or Higher Education who are required to learn how touse the computer-aided design (CAD) software package AutoCAD2011. Students taking examinations based on CAD will find the contentsof the book of great assistance.
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Introduction to AutoCAD 2011- P9 242 Introduction to AutoCAD 2011 the chamfer and fillet tools Example – Chamfer and Fillet (Fig. 12.33) 1. Set layer Green as the current layer.chapter 12 2. Set Isolines to 16. 3. Working to the sizes given in Fig. 12.29 and using the Box and Cylinder tools, construct the 3D model (Fig. 12.30). 4. Place in the 3D Navigate/SW Isometric view. Union the two boxes and with the Subtract tool, subtract the cylinders from the union. Box 160 � 100 � 10 Elliptical cylinder 80 � 40 height 60 Cylinders R5 Box 120 � 60 � 50 height 10 Fig. 12.29 Example – Chamfer and Fillet – sizes for the model Fig. 12.30 Example – Chamfer and Fillet – isometric view – the model before using the tools Introducing 3D modeling 243NotesTo construct the elliptical cylinder, call the Cylinder tool from theHome/Modeling panel. The command line shows: chapter 12Command: _cylinderSpecify center point of base or [3P/2P/Ttr/ Elliptical]: enter e right-clickSpecify endpoint of first axis or [Center]: 130,160Specify other endpoint of first axis: 210,160Specify endpoint of second axis: 170,180Specify height or [2Point/Axis endpoint]: 50Command:5. Click the Fillet tool icon in the Home/Modify panel (Fig. 12.31). The command line shows:Fig. 12.31 The Fillet tool icon in the Home/Modify panelCommand:_filletCurrent settings: Mode=TRIM. Radius=0Specify first object or [Undo/Polyline/Radius/ Trim/Multiple]: enter r (Radius) right-clickSpecify fillet radius : 10Select first object: pick one cornerSelect an edge or [Chain/Radius]: pick a second corner 244 Introduction to AutoCAD 2011 Select an edge or [Chain/Radius]: pick a third corner Select an edge or [Chain/Radius]: pick the fourth cornerchapter 12 Select an edge or [Chain/Radius]: right-click 4 edge(s) selected for fillet. Command: 6. Click the Chamfer tool in the Home/Modify panel (Fig. 12.32). The command line shows: Fig. 12.32 The Chamfer tool icon in the Home/Modify panel Command: _chamfer (TRIM mode) Current chamfer Dist1 = 0, Dist2 = 0 Select first line or [Undo/Polyline/Distance/ Angle/Trim/mEthod/Multiple]: enter d right-click Specify first chamfer distance : 10 Specify second chamfer distance : Select first line or [Undo/Polyline/Distance/ Angle/Trim/mEthod/Multiple]: pick one corner One side of the box highlights Base surface selection... Enter surface selection option [Next/OK (current)] : right-click Specify base surface chamfer distance : right-click Specify other surface chamfer distance : right-click Select an edge or [Loop]: pick the edge Select an edge or [Loop]: pick the second edge Select an edge [or Loop]: right-click Command: ...