Technical Drafting Lesson 5 PDF

8 10 NATIONAL CAPITAL REGION SCHOOLS DIVISION OFFICE QUEZON CITY BATASAN HILLS NATIONAL HIGH SCHOOL IBP Road, Batasan Hills, Quezon City Supplementary Learning Materials Technology and Livelihood Education TECHNICAL...

8 10 NATIONAL CAPITAL REGION SCHOOLS DIVISION OFFICE QUEZON CITY BATASAN HILLS NATIONAL HIGH SCHOOL IBP Road, Batasan Hills, Quezon City Supplementary Learning Materials Technology and Livelihood Education TECHNICAL DRAFTING QUARTER 1 – SLEM 6 LEARNING COMPETENCY: LO 6. PREPARING DRAWING USING COMPUTER-AIDED DESIGN (CAD) TLE_ICTTD10CA-Ic-j-  HOW TO USE THIS MODULE Before you start answering the module, I want you to set aside other tasks that will disturb you while enjoying the lessons. Read the simple instructions below to successfully enjoy the objectives of this kit. Have fun! 1. Follow carefully all the contents and instructions indicated in every page of this module. 2. Write on your notebook or any writing pad the concepts about the lessons. Writing enhances learning that is important to develop and keep in mind. 3. Perform all the provided activities in the module. 4. Let your facilitator/guardian assess your answers. 5. Analyze conceptually the posttest and apply what you have learned. 6. Enjoy studying! DRAWING AIDS EXPECTATIONS At the end of the module, you should be able to: 1. identify the autocad common function keys; 2. create an autocad blocks; and 3. appreciate the use of computer aided designs in preparing drawings. PRE-TEST You will be challenged to recall your prior knowledge and previous experiences about Technical Drafting. This phase will guide you in assessing yourself by answering the questions below before you further explore the basics of preparing computer-aided drawings. Directions: Choose the letter of the correct answer. Write the letter of your answer on a separate sheet of paper. 1. Toggles orthomode. A. F5 B. F6 C. F7 D. F8 2. It creates a new drawing. A. ctrl+d B. ctrl+n C. ctrl+s D. ctrl+t 3. Toggles the sheet set manager. A. ctrl+4 B. ctrl+5 C. ctrl+6 D. ctrl+7 4. This command ends a command, or will repeat the previous command if blank. A. cntrol key B. enter key C. escape key D. space bar 5. Opens an existing drawing. A. ctrl+e B. ctrl+n C. ctrl+o D. ctrl+p  LOOKING BACK Activity 1. Let’s Bring Back Memories Directions: Study and identify what type of object snap are the images below. Write your answer on a separate sheet of paper. How did you find the activity? Were you able to identify the images? If you identified it well, Congratulations! You may now proceed to the next lesson. If not, you may ask the help of your parents, brother or sister. BRIEF INTRODUCTION In this lesson you will be introduced to creating AutoCAD blocks to create your AutoCAD library for symbols. By definition, a block is a collection of objects (lines, arcs, circles, text, etc.) that form a more complex entity that normally represents an object in the real world, e.g. a door, a chair, a window, a computer. Creating AutoCAD Blocks There are many advantages to using blocks, here are the major ones: A. Blocks are a single entity. You can modify (move, copy, rotate) a block by selecting only one object in it. B. Using blocks can help keep your file size-down. AutoCAD stores block definitions in its database. When you insert a block, AutoCAD only stores the name of the block, its location (insertion point), scale and rotation. This can be very noticeable in large drawing.  Here are the commands that you will need for using blocks in this lesson: Command Keystroke Icon Location Result Block wmake / B Home > Block Creates a block from separate > Create entities (internal to current drawing) Write wblock / W None None Creates a block and writes it to a file Block (external) Insert insert / I Home > Block Inserts a block (internal or external) > Insert Explode explode / X Home > Modify Explodes a block or other compound > Explode object into its component parts Steps in Creating AutoCAD Blocks 1. Lunch the AutoCAD. 2. Create a new initial layer. 3. Name it according to the standards. 4. Make the Zero Layer current. NOTE: Zero Layer has special properties. When creating blocks, if the objects in the block are drawn on Zero layer, they will assume the properties of the current layer when they are inserted. 5. Select one of the symbols that you want to draw. This example uses only arc/circle and line command. 6. Pull down the menu or the icon and a dialogue box appears. 7. Enter information you want to include. 4 8. The first thing that you want to do is give your block a name. Type Ceiling Outlet Fixture in the edit box beside Block Name. Some names may need to be more descriptive, such as part number, or size. Give your block a name by typing Ceiling Outlet Fixtures. 9. Pick the Pick Point button and then pick the midpoint of the bottom line. Make sure that the retain button is selected, this will keep your objects on the screen as individual objects. If you don't select a base point, your block will default to 0,0,0 and you will insert all your blocks at the same location - the origin. (You will see in a moment that selecting the Pick Point with blocks is very important when you later insert them into the drawing - always pick a point that will allow you to place the block easily.) 10. Pick the Select Objects button and then select all the parts of your drawing/object and press. 11. Select the drawing units you used to create the original object. 12. Pick the OK Button and the dialog box closes. Your drawing file will contain a “Block Definition” called Ceiling Outlet Fixture. Congratulations, you have created your first block! If the default radio button "Convert to block" was checked, move your mouse over the objects and you will see that they all highlight - signifying that it is now one object. Inserting the AutoCAD Blocks Once a block is created you may insert it by typing, I. Change to the Ceiling Outlet Fixture Layer. You will see this dialog box on the screen: 5  By default, all the options you need are pre-selected. Since you only have one block in your drawing, its name is displayed. Make sure that the Insertion Point - Specify On-screen box is checked, and the Explode button is not checked. The Scale - Specify On-screen should not be checked. Then press the OK button. Pick anywhere on your screen and you will see the block appear. Notice how the block that you drew on the white Zero Layer is now Red and on the Ceiling Outlet Fixtures layer. You may now insert a Ceiling Outlet Fixture on every floor plans in your drawing. You can also copy the block instead of re-inserting each time, but make sure you know how to insert. AutoCAD COMMON FUNCTION KEYS F1: Display Help F7: Toggles GRID mode F2: Toggles the Text Window F8: Toggles ORTHO mode F3: Toggles OSNAP F9: Toggles SNAP mode F4: Toggles Tablet mode F10: Toggles Polar Tracking F5: Toggles ISOPLANE F11: Toggles Object Snap Tracking F6: Toggles Dynamic UCS F12: Toggles Dynamic Input SPECIAL KEY FUNCTIONS Escape Key – Cancels the current command, menu or dialogue box. Enter Key – Ends a command, or will repeat the previous command if blank. Space Bar – Same as the Enter Key, except when entering key. CTRL+0: Toggles Clean Screen CTRL+PAGE DOWN: Move to the next CTRL+1: Toggles the Properties palette layout tab to the right of the current tab CTRL+2: Toggles the Design Center palette CTRL+D: Toggles Dynamic UCS CTRL+3: Toggles the Tool Palettes window CTRL+E: Cycles through isometric planes CTRL+4: Toggles the Sheet Set Manager CTRL+F: Toggles running object snaps CTRL+6: Toggles the dbConnect Manager CTRL+G: Toggles the grid CTRL+7: Toggles the Markup Set Manager CTRL+H: Toggles PICKSTYLE CTRL+8: Toggles the QuickCalc calculator CTRL+I: Toggles COORDS palette CTRL+J;CTRL+M: Repeat the last command CTRL+9: Toggles the Command Window (pressing Enter does the same) CTRL+A: Selects all objects in the drawing CTRL+L: Toggles Ortho mode CTRL+SHIFT+A: Toggles Groups CTRL+N: Creates a new drawing CTRL+B: Toggles Snap mode CTRL+O: Opens an existing drawing CTRL+C: Copies an objects to Clipboard CTRL+P: Prints/plots the current drawing CTRL+SHIFT+C: Copies objects to CTRL+R: Cycles through layout viewports Clipboard with Base Point CTRL+S: Saves the current drawing CTRL+X: Cuts object to Clipboard CTRL+T: Toggles Tablet mode CTRL+Y: Cancels the preceding Undo action CTRL+SHIFT+V: Pastes data from the Clipboard as a Block 6 CTRL+V: Pastes data from the Clipboard CTRL+CTRL+S: Opens the Save As dialog box CTRL+Z: Reverses the last action CTRL+[;CTRL+\: Cancels the current Command (pressing Esc does the same) CTRL+ PAGE UP: Moves to the next layout Tab to the left of the current tab ACTIVITY Activity # 1 Directions: Read and identify each statement. Write your answer on a separate sheet of paper. 1. Toggles Clean Screen. 2. Move to the next layout tab to the right of the current tab. 3. Toggles running object snaps. 4. Toggles Dynamic Input 5. Copies objects to clipboard with base point. 6. Toggles the Command Window. 7. Cancels the preceding Undo action 8. Toggles the Text Window 9. Repeat the last command 10. Cancels the current command, menu or dialogue box. Activity # 2 Directions: Create the following architectural symbols for AutoCAD blocks that you will insert later on succeeding activities. Symbol Name Fixed Window Single-swing door (90 degrees) Pocket Sliding Door Bi-fold Door Sliding Door Ramp 7  CHECKING YOUR UNDERSTANDING Task 1: Guide Questions 1. What is the importance of using blocks in your drawings? 2. Explain the importance familiarizing yourself with different function and special keys. POST TEST Directions: Read the following questions carefully and choose the letter that best describes the statement. Use a separate sheet of paper to write your answers. 1. Toggles orthomode. A. F5 B. F6 C. F7 D. F8 2. It creates a new drawing. A. ctrl+d B. ctrl+n C. ctrl+s D. ctrl+t 3. Toggles the sheet set manager. A. ctrl+4 B. ctrl+5 C. ctrl+6 D. ctrl+7 4. This command ends a command, or will repeat the previous command if blank. A. cntrol key B. enter key C. escape key D. space bar 5. Opens an existing drawing. A. ctrl+e B. ctrl+n C. ctrl+o D. ctrl+p References Technology and Livelihood Education Information and Communication Technology Learner’s Material – Technical Drafting Prepared by: Checked by: RECHELL Q. ARANAS PAUL JANSSEN V. ALVA Teacher 1 Teacher II Batasan Hills National High School Batasan Hills National High School Validated by: ROWELL NOROŇA BENEDICT ALAIN SEMBRANO Master Teacher I Master Teacher I Batasan Hills National High School Batasan Hills National High School 8