Introduction to AutoCAD 2010

Transcription

1 Page 1 Introduction to AutoCAD 2010 Alf Yarwood Chapter 2 Exercise 1 1. Open AutoCAD either with a double-click on its start-up icon in the Windows desktop, or by using the method on the computer being used. 2. Make sure the coordinate numbers at the bottom left-hand corner of the screen are showing clearly. Right-click on the numbers, followed by a click on Absolute in the menu which appears. 3. Press the function key F9 or left-click the Snap Mode button in the status bar to ensure Snap is set on - the button highlights if on. 4. Press the function key F7 or left-click the Grid Display button in the status bar to ensure Grid dots are showing. 5. Call the Line tool with a left-click on its tool icon in the Home/Draw panel 6. Move the mouse until coordinate numbers in the status bar read 40,250,0 left-click. 7. Move the mouse until the coordinate numbers show 270,250,0 left-click. 8. Move the mouse until the coordinate numbers show 270,100,0 left-click. 9. Move the mouse until the coordinate numbers show 40,100,0 left-click. 10. Move the mouse until the coordinate numbers show 40,250,0 right-click - the rectangle Exercise 1 appears on screen. Note The last figure of the coordinate number (0) can be ignored for all 2D work. 11. Place a 3 1 / 2 inch floppy disk into the floppy disk slot of the computer. 12. Select Save As... followed by a click on AutoCAD Drawing in the drop-down menu from the Quick Access toolbar. 13. In the Save Drawing As dialog which appears select 3 1 / 2 Floppy (A:) in the Save in field and enter 2_Exercise01 in the File name field, followed by a left-click on the Save button of the dialog. 14. The drawing will be saved as a file with the name 2_Exercise01.dwg on the floppy disk. Note: A USB Flash drive (pen) or similar device can be used for this purpose.

2 Page 2 Chapter 2 Exercise 2 Note If you have saved the acadiso.dwt drawing template as suggested in Chapter 1 of the book Introduction to AutoCAD 2010, when you open AutoCAD 2010, the acadiso.dwt template will load automatically. You must however close your drawing after saving it, followed by opening the acadiso.dwt template: 1. Close your drawing with a left-click on its Close button at the top right-hand corner of the AutoCAD drawing area. Note it is the lower of the two Close buttons, the upper one will close AutoCAD 2010 if it is clicked. 2. Left-click the Open icon in the Quick Access toolbar. 3. When the Select File dialog appears, click Drawing Template [*.dwt] in the Files of type list followed by a click on acadiso in the File list. The click the Open button of the dialog.

3 Page 3 To construct the drawing for Exercise 2 1. Call the Line tool with a left-click on its tool icon in the Home/Draw panel. 2. At the command line: _line Specify first point: enter 60,200 right-click Specify next point or [Undo]: enter 255,200 right-click (i.e. for the X coordinate ) Specify next point or [Undo]: enter 255,100 right-click (i.e. for the Y coordinate ) Specify next point or [Undo]: enter 60,100 right-click Specify next point or [Close/Undo]: enter c (for Close) right-click Note: The first entry 60,220 could have been any other suitable coordinate number. The other coordinates are found by addition or subtraction from that first number. 3. Save the drawing to your floppy disk with the file name 2_Exercise02.dwg. Chapter 2 Exercise 3 1. Close the previous drawing and open the acadiso.dwt template. 2. Left-click the Line tool from the Home/Draw panel. The command line shows: _line Specify first point: enter 90,240 right-click Specify next point or [Undo]: right-click Specify next point or [Undo]: right-click Specify next point or [Close/Undo]: right-click Specify next point or [Close/Undo]: right-click Specify next point or [Close/Undo]: right-click Specify next point or [Close/Undo]: right-click Specify next point or [Close/Undo]: right-click Specify next point or [Close/Undo]: enter c (Close) right-click 3. Save the drawing to your floppy disk with the file name 2_Exercise03.dwg. 4. Close the drawing with a left-click on the Close button of the drawing window. Material accompanying Introduction to AutoCAD 2010, ISBN Copyright 2009, Alf Yarwood. Published

4 Page 4 Chapter 2 Exercise 4 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar. 2. Click the Circle tool icon in the Home/Draw panel. The command line shows: _circle Specify center point for circle or [3P/ 2P/Ttr (tan tan radius)]: enter 100,170 right-click Specify radius of circle or [Diameter]: enter 50 right-click right-click CIRCLE: Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: enter 200,170 right-click Specify radius of circle or [Diameter] <50>: enter 30 right-click right-click CIRCLE: Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: enter t (tan tan radius) right-click Specify point on object for first tangent of circle: pick point on R50 circle Specify point on object for second tangent of circle: pick point on R30 circle Specify radius of circle <30>: enter 25 right-click 3. Save the drawing to your floppy disk with the file name 2_Exercise04.dwg. 4. Close the drawing with a left-click on the Close button of the drawing window. Chapter 2 Exercise 5 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar.. 2. Left-click on the Line tool icon in the Home/Draw panel. The command line shows: _line Specify first point: enter 50,130 right-click Specify next point or [Undo]: right-click Specify next point or [Undo]: right-click 3. Left-click on the Circle tool icon in the Home/Draw control panel. The command line shows: _circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: enter 200,190 right-click Specify radius of circle or [Diameter]: enter 40 right-click right-click CIRCLE: Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: enter t (tan tan radius) right-click Specify point on object for first tangent of circle: pick point on R40 circle Specify point on object for second tangent of circle: pick point on the line Specify radius of circle <40>: enter 25 right-click Material accompanying Introduction to AutoCAD 2010, ISBN Copyright 2009, Alf Yarwood. Published

5 Page 5 4. Save the drawing to your floppy disk with the file name 2_Exercise05.dwg. 5. Close the drawing with a left-click on the Close button of the drawing window. Chapter 2 Exercise 6 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar. 2. Left-click on the Line tool icon in the Home/Draw panel. The command line shows: _line Specify first point: enter 100,130 right-click Specify next point or [Undo]: right-click Specify next point or [Undo]: right-click Specify next point or [Close/Undo]: right-click 3. Left-click on the Circle tool icon in the Home/Draw panel. The command line shows: _circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: enter t right-click Specify point on object for first tangent of circle: pick point on the 130 line Specify point on object for second tangent of circle: pick point on the 100 line Specify radius of circle: enter 40 right-click 4. Save the drawing to your floppy disk with the file name 2_Exercise06.dwg. 5. Close the drawing with a left-click on the Close button of the drawing window. Chapter 2 Exercise 7 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar. 2. Left-click on the Polyline tool icon in the Home/Draw control panel. The command line shows: _pline Specify start point: enter 60,200 right-click Current line-width is 0 Specify next point or [Arc/Halfwidth/Length/Undo/Width]: enter w (Width) right-click Specify starting width <0>: enter 1.5 right-click Specify ending width <2>: right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: enter 110,220 right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: enter 250,200 right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: enter 300,100 right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: right-click Specify next point or [prompts]: enter 60,120 right-click Specify next point or [prompts]: enter c right-click 3. Save the drawing to your floppy disk with the file name 2_Exercise07.dwg. 4. Close the drawing with a left-click on the Close button of the drawing window. Material accompanying Introduction to AutoCAD 2010, ISBN Copyright 2009, Alf Yarwood. Published

6 Page 6 Chapter 2 Exercise 8 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar. 2. Left-click on the Polyline tool icon in the Home/Draw panel. The command line shows: _pline Specify start point: enter 50,210 right-click Current line width is 0 Specify starting width <0>: enter 2 right-click Specify ending width <2>: right-click Specify next point or [prompts]: enter 110,210 right-click Specify starting width <2>: enter 20 right-click Specify ending width <20>: right-click Specify next point or [prompts]: enter 180,210 right-click Specify starting width <20>: enter 2 right-click Specify ending width <2>: right-click Specify next point or [prompts]: enter 250,210 right-click Specify starting width <2>: enter 10 right-click Specify ending width <10>: right-click Specify next point or [prompts]: enter 250,105 right-click Specify next point or [prompts]: enter 180,105 right-click Specify starting width <10>: enter 30 right-click Specify ending width <30>: right-click Specify next point or [prompts]: enter 110,105 right-click Specify starting width <30>: enter 10 right-click Specify ending width <10>: right-click Specify next point or [prompts]: enter 50,105 right-click

7 Page 7 Specify next point or [prompts]: enter 2 (Close) right-click Specify ending width <2>: right-click Specify next point or [prompts]: enter c (Close) right-click 3. Save the drawing to your floppy disk with the file name 2_Exercise08.dwg. 4. Close the drawing with a left-click on the Close button of the drawing window. Chapter 2 Exercise 9 1. Open acadiso.dwt - left-click New... in the Quick Access toolbar. 2. Left-click on the Polyline tool icon in the Home/Draw panel. The command line shows:

8 Page 8 _pline Specify start point: enter 60,200 right-click Current line width is 0 Specify starting width <0>: enter 5 right-click Specify ending width <5>: right-click Specify next point or [prompts]: enter 200,200 right-click Specify starting width <5>: enter 20 right-click Specify ending width <20>: enter 0 right-click Specify next point or [prompts]: enter 255,200 right-click Specify next point or [prompts]: right-click right-click PLINE Specify start point: enter 60,95 right-click Current line width is 0 Specify starting width <0>: enter 2 right-click Specify ending width <2>: right-click Specify next point or [prompts]: enter a right-click Specify endpoint of arc or [prompts]: enter s (Second point) right-click Specify second point on arc: enter 170,140 right-click Specify end point of arc: enter 225,130 right-click Specify end point of arc or [prompts]: enter w (Width) right-click Specify starting width <2>: enter 25 right-click Specify ending width <25>: enter 0 right-click Specify end point of arc or [prompts]: enter 295,70 right-click Specify end point of arc or [prompts]: right-click 3. Save the drawing to your floppy disk with the file name 2_Exercise09.dwg. 4. Close the drawing with a left-click on the Close button of the drawing window.. Additional exercises The pages which follow show five exercises additional to those shown in Chapter 2 of the book Introduction to AutoCAD No answers are included. Some multiple choice questions follow the exercises.

9 Page 9 1. Construct the given outline using the Line tool.

10 Page The drawing shows a closed polyline of width 0.7. Construct the outline using the technique you believe to be best suited to producing the required drawing. 3. Construct four arcs to the details given in the drawing to the right. Add lines between the arcs. Then, using Edit Polyline form a closed polyline of the outline to a width of Construct the four arcs to the details as given. Add lines to complete the outline. Then add the four circles tangential to the outline.

11 Page Construct four circles - two of radius 55 and another two of radius 25 - in the position as shown in the drawing to the right. Then add the other two circles tangential to the first four. Multiple choice questions 1. To call the Line tool from the command line, the following abbreviation can be entered: (a) lin (b) li (c) l (d) ln 2. When the F6 key of the keyboard is pressed, the following facility is toggled on/off: (a) Snap (b) Ortho (c) DUCS (d) DYN 3. The key F9 toggles on/off: (a) Snap (b) Ortho (c) Grid (d) DYN 4. When entering absolute coordinate numbers at the command line, the coordinates are preceded by: (a) The letter a (b) The (c) The letters ab (d) There is no need to enter anything in front of the coordinate numbers 5. The command line abbreviation for the Circle tool is: (a) cir (b) c (c) ci (d) cl 6. What are the differences between outlines drawn using the Line tool and those drawn using the Polyline tool? Material accompanying Introduction to AutoCAD 2010, ISBN Copyright 2009, Alf Yarwood. Published