Labsheet JJ306 CAD2

LAB SHEET

COURSE CODE : JJ306

COURSE NAME : COMPUTER AIDED DESIGN 2

PROGRAMME : DKM

PREPARED BY : MOHD FAHMI BIN HAMID

MECHANICAL ENGINEERING DEPARTMENT

SYNOPSIS COMPUTER AIDED DESIGN 2 exposes the students to 3D design theory and practice of surfaces, types, formulation and implementation by CAD system. Students will master assembly creation techniques, assembly analysis and using CAD systems to create assembly model and assembly drawing.

COURSE LEARNING OUTCOMES Upon completion of this course, students should be able to:1. Explain clearly the configuration 3D CAD user and interface. 2. Demonstrate an understanding of sketching techniques and methods of using extruding 3. Create, place and constrain suitable custom and standard components in an assembly, simulate

mechanisms, animate assembly design and check for interfaces. 4. Produce document designs using base, projected, section, detailed, and isometric drawing views

and document assemblies using standard and exploded drawing views. 5. Develop automated dimension techniques and assembly centric bill of materials.

COURSE SUMMARY (00 LECTURE : 30 PRACTICAL)1.0 INTRODUCTION TO 3D IN CAD (00 : 02)This topic explains the user interface and design parametric part.

2.0 BASIC SKETCHING TECHNIQUES (00 : 04)This topic discusses the creating 2D sketches, geometric constrain and dimensioning sketches.

3.0 BASIC AND DETAIL SHAPE DESIGN (00 : 10)This topic assists student to create basic sketched features, editing parametric parts, create work features and creating basic swept shapes.

4.0 ASSEMBLY DESIGN OVERVIEW AND VIEW CREATION (00 : 08)This topic assists student to designing assemblies and presentation files.

5.0 DIMENSION AND ANOTATIONS ASSEMBLY DRAWING (00 : 06)This topic discusses to automated dimensioning techniques, manual dimensioning techniques, assembly-centric Bill of Materials and Creating and Customizing parts lists.

ASSESSMENT The course is assessed through 100% Continuous Assessment . CONTINUOUS ASSESSMENT (CA): [The total score of the CA components will be converted to the determined CA percentage] Continuous assessment is carried out throughout the semester and comprises the followings: a. Practical Tasks (minimum 4) 60% b. Practical Tests (minimum 2) 40% (Assessment Task above (a-b) to be executed during Lecture/Practical hour) *Note : 1. Refer to Assessment Specification Table for the details.

2. The percentage of Continuous Assessment may vary depending on course.

CONTENT [ASSESSMENT SPECIFICATIONS TABLE (AST)]NO. TOPIC TASK TITLE CLO

1.0 INTRODUCTION TO 3D IN CADTASK 1 Configure 3D project 1TASK 2 User interface 1

2.0 BASIC SKETCHING TECHNIQUESTASK 3 Sketch and model 2TASK 4 Sketching lines 2

3.0 BASIC AND DETAIL SHAPE DESIGN

TASK 5 Extruding 3TASK 6 Multiple drawings 3TASK 7 Visualizing 3D models 3TASK 8 2D sketching planes 3

TASK 9Circle sketch 2Arc sketch 2

TASK 10Revolving sketch 3Fillets and chamfers 3Angles 3

TASK 11Editing geometry and work feature 3Modifying solid models 3

4.0ASSEMBLY DESIGN OVERVIEW AND VIEW CREATION

TASK 12Assemblies techniques 4Presentation file 4

5.0DIMENSION AND ANOTATIONS ASSEMBLY DRAWING

TASK 132d drawing 5Centric bill of materials 5

6 RUBRIC7 FORMAT OF LABORATORY REPORT [Submitted by student]8 FORMAT OF LABORATORY REPORT (FRONT PAGE)

1.0 INTRODUCTION TO 3D IN CADThis topic explains the user interface and design parametric part.

TASK 1 : Configure 3D Project:To access the data files for the exercises, you must make Fahmi-JJ306the active project.1. Start Autodesk Inventor. (Note: If you are already in Autodesk Inventor, close all files.)2. On the Get Started tab, Launch panel, click Projects.3. Browse to the folder where you installed the exercise files.4. In the Choose Project File window, select Fahmi-JJ306.ipj. Click Open.5. Click Done.

TASK 2 : User Interface

View Cube [5] and Navigation Bar [6] Explanations

2.0 BASIC SKETCHING TECHNIQUESThis topic discusses the creating 2D sketches, geometric constrain and dimensioning sketches.

TASK 3 : Sketch And ModelOpen a part file1. Open Lesson4mod04_01.ipt.

2. On the Navigate toolbar, click Free Orbit.

3. Rotate the die in all directions to view its sides.All 3D objects have sides. If you put any object into a clear plastic box, it would appear to have six sides just like the clear plastic box. These sides are called views. There are six views to any object: top, front, back, bottom, right-side, and left-side.

(Tip: Use the ViewCube to display standard orthographic views of the die)

Creat Sketch Views1. Use Autodesk Inventor to view the following objects, and then sketch the front, top, and right-

side views.2. Do not add hidden lines. These will be discussed in the next exercise.3. Open mod04_01a.ipt.

4. Open mod04_01b.ipt.

5. Open mod04_01c.ipt.

6. Open mod04_01d.ipt.

7. Open mod04_01e.ipt.

8. Open mod04_01f.ipt.

9. Keep these sketches for the next exercise, where you will add the other linetypes required to complete the sketch.

TASK 4 : Sketching Lines1. On the Launch panel, click New. On the Metric tab, double-click Standard (mm).ipt. A new part is

created and listed in the browser.2. On the Draw tab, click Line.3. Click near the left side of the graphics window. Move the cursor to the right approximately 100

units. Click a second point.

Tip: If the entire line is not visible on your screen, use the Zoom tool or the wheel on your mouse to zoom out and view the entire line.Note: The length, angle, and geometry of the line are dynamically displayed on the screen. The length and angle are displayed in the lower right corner of the window, and symbols indicate the geometric constraint. In this example, the symbol indicates that the line is horizontal.

4. Move the cursor up approximately 40 units and create a perpendicular line.

5. Move the cursor to the left and create a horizontal line of approximately 30 units. The symbols now indicate a parallel constraint.

6. Move the cursor down and create a vertical line of approximately 10 units.

7. Move the cursor left to create a horizontal line of approximately 40 units.

8. Move the cursor up until the symbols indicate a parallel constraint and a dotted line is displayed at the same height as the line on the right. Click at that point.

9. Move the cursor left until the symbols indicate a parallel constraint and a dotted line is displayed. Click at that point.

10. Move the cursor down until the symbols indicate a coincident constraint and a green dot is displayed. Click at that point.

11. Right-click in the graphics window. Click Done.

12. Right-click again in the graphics window. Click Finish Sketch.

3.0 : BASIC AND DETAIL SHAPE DESIGNThis topic assists student to create basic sketched features, editing parametric parts, create work features and creating basic swept shapes.

TASK 5 : ExtrudingCreate Extruded Features1. Open Lesson5\mod05_01.ipt.

2. In the browser, right-click Sketch2. Click Visibility. A check mark is displayed next to the option. The sketched geometry and dimensions are displayed.

3. On the Create tab, click Extrude.

4. Move the cursor inside the lens-shaped profile. Select the profile. A preview of the extrusion is displayed.

5. In the Extrude dialog box, under Extents, enter 36. Click Apply.

6. In the browser, right-click Extrusion2 > Sketch2. Click Visibility. A check mark is displayed next to the option.

7. On the Create tab, click Extrude.

8. Move the cursor inside the remaining (oval) profile. Select the profile. A preview of the extrusion is displayed.

9. In the Extrude dialog box, under Extents, enter 16. Click Apply.

Note: Sketch2 is a shared sketch. The icon in the browser displays as a hand to indicate that the sketch is shared.

10. In the browser, right-click Sketch2. Click Visibility. The sketch and dimensions are no longer visible.

TASK 6& 7 (Open any part and refer to TASK 3)

TASK 8 : 2D Sketching PlanesPredefined 2D Sketch Planes

YZ Plane XZ Plane XY PlaneNote: To create a sketch on desired plane, right-click on the plane and select New Sketch.

TASK 9 : Circle & Arc Sketch1. Open a new part file.

2. On the Sketch tab, click Create 2D Sketch.

3. In the browser, expand Origin and click XY Plane.

Consumed sketch

Unconsumed sketch

4. On the Draw tab, click Circle.

5. Click the center point (Origin) and type 100 as adiameter of the circle and press Enter.

6. On the Exit tab, click Finish.

TASK 10 : Revolving Sketch, Fillets, Chamfers And AnglesCreate a Revolved Feature1. Open Lesson5\mod05_02.iam.2. In the browser, expand clutch2:1. Move the cursor to the Sketch1 icon. A preview of the sketch

geometry and dimensions is displayed in the graphics window. For this exercise, you need to activate the part and make the sketch visible.

3. In the browser, double-click clutch2:1 to activate the part.4. In the browser, right-click Sketch1. Click Visibility. A check mark is displayed next to the option.

The required geometric and dimensional constraints already exist on the sketch.5. On the Create tab, click Revolve.

The profile and axis are automatically selected. The axis line was created using the centerline style.

In the Revolve dialog box, in the Extents list, confirm Full is selected. The preview of the revolved feature also confirms the full extents.

6. Click Apply.

7. On the Modify tab, click Fillet.

8. Select the edge. A preview of the fillet is displayed. In the Fillet dialog box, under Radius, enter 5. Click Apply.

9. Select the edge. A preview of the chamfer is displayed. In the Chamfer dialog box, under Distance, enter 5. Click Apply.

TASK 11 : Modifying Solid Models1. Open Lesson10\swp_02.ipt.2. In the browser, right-click Hole2 and select Edit Feature. In the Hole dialog box, under Diameter,

change 0.5 to 0.25. Click OK.

3. In the browser, right-click Circular Pattern1 and select Edit Feature, under Placement, change 8 to 12. Click OK.

4. In the browser, expand Circular Pattern1. Press Control and select the Occurrence as shown below, right-click on the selected Occurrence and select Suppress.

4.0 : ASSEMBLY DESIGN OVERVIEW AND VIEW CREATIONThis topic assists student to designing assemblies and presentation files.

TASK 12 : Asemblies Techniques & Pesentation FilePlace Components in an Assembly1. Open Lesson7mod07-1.iam.An empty assembly file is opened with the assembly work planes

and center point visible.2. On the Component tab, click Place.

3. Open Lesson7\mod07-Housing.ipt.This is the first component in the assembly (the base component). It is grounded, and its origin is alIgned with the assembly origin.

4. Right-click in the graphics window. Click Done after the first occurrence of the housing is automatically placed.

5. In the browser, expand the Origin folder. Select the YZ work plane.6. Press SHIFT and select Center Point.

7. Right-click the selections. Click Visibility.8. On the Component tab, click Place.9. Open Lesson7\mod07-Pump-Shaft.ipt. Click to position it to the right of the housing.10. Right-click in the graphics window. Click Done.11. Repeat the previous steps to insert one occurrence of mod07-Brg-45.iam near the short end of

the pump shaft, and one occurrence of mod07-Brg-56.iam near the opposite end of the pump shaft.

Add Asembly Constraints1. On the Position tab, click Constrain.

2. In the Place Constraint dialog box, clear the check mark from Show Preview.

3. Move the cursor over the planar face of the inner race on bearing 45. An arrow is displayed, and the two edges of the plane are highlighted. Click to select the face.

4. Select the first shoulder on the pump shaft.

5. In the Place Constraint dialog box, click Apply. Bearing 45 moves to the pump shaft and the two selected surfaces face each other. The positioning of the two components may differ from the following illustration, but the two faces are mated.

6. In the Place Constraint dialog box, select the Show Preview check box.7. Add another mate constraint by pointing the cursor to the short cylindrical portion of the pump

shaft. Click when the axis of the shaft is highlighted.

Note: If the bearing obscures the pump shaft, close the Place Constraint dialog box. Select the bearing and drag it away. Click the Constrain tool to open the Place Constraint dialog box again.

8. Point to a cylindrical surface on bearing 45 and click when the axis is highlighted. The shaft moves to show a preview of the constraint.

9. Right-click in the graphics window. Click Apply.

10. Use the Rotate and Zoom tools to orient the assembly as shown.

Next, you apply an insert constraint to constrain bearing 45 to the housing.

Add An Insert Constraint1. In the Place Constraint dialog box, under Type, click Insert.2. Point the cursor to the circular edge on the back face of the bearing seat in the housing. Click

when the edge is highlighted.

3. Select the circular edge of the inner race on bearing 45 as shown. Use the Rotate and Zoom tools to orient your view of the model.

Note: The edges of the race on the bearing are chamfered. Make sure you pick an edge that lies on the face of the bearing.

4. Apply the constraint.5. Constrain bearing 56 to the housing using an insert constraint. Select a circular edge on the

bearing seat and a circular edge on the bearing. Make sure you pick an edge that lies on the face of the bearing.

Note: The pump shaft visibility has been turned off in the following image to show the insert solution for the bearing seat edge.

6. If the constraint preview shows the bearing in the wrong position, click the Aligned solution in the Place Constraint dialog box. The correct solution has a 2 mm offset from the face of the bearing and the face of the housing as shown on the right.

Aligned and opposed constraint solutions7. Click OK.

5.0 : DIMENSION AND ANOTATIONS ASSEMBLY DRAWINGThis topic discusses to automated dimensioning techniques, manual dimensioning techniques, assembly-centric Bill of Materials and Creating and Customizing parts lists.

TASK 12 : 2D Drawing & Centric Bill Of MaterialsOpen the Drawing1. Make Inv_Edu.ipj the active project.2. Open Lesson6mod06_01.idw.The drawing file contains a single sheet with a border and title

block.3. On the Create tab, click Base.

4. Click Open an Existing File.

5. Select mod06_01.ipt as the view source. Click Open.6. Position the view preview in the lower-left corner of the sheet (in Zone C6). Click to place the

view.

Create a Projected View1. On the Create tab, click Projected.

2. Select the base view. Move the cursor vertically to a point above the base view.3. Click in zone E6 to place the top view.4. Move the cursor to the right of the base view.5. Click in zone C2 to place the right-side view.6. Right-click in the graphics window. Click Create.

Edit The ViewsA scale of 1:1 results in crowded views. In the steps that follow, you set the base view scale to 1:2. The dependent views are updated automatically.1. Move the cursor over the base view to display the red border. Right-click in the drawing. Click Edit View.2. Select 1/2 from the Scale list.3. Click OK.4. In the browser, expand the Sheet:1 entry.5. Expand ANSI - Large.6. Double-click Field Text

7. In the Edit Property Fields dialog box, scroll down to SCALE.8. Click the 1:1 field. For Scale, enter 1:2.

9. Click OK.

Create an Isometric ViewTo complete the multiview layout, create an isometric view.1. On the Create tab, click Projected.2. Select the base view.3. Move the cursor to a point above and to the right of the base view.4. Click the sheet in Zone E3 to place the isometric view.5. Right-click in the graphics window. Click Create.6. Right-click the isometric view. Click Edit View.7. In the Drawing View dialog box, click the Display Options tab.8. Clear the check mark from Tangent Edges. Click OK.9. Select the right-side view and drag it to Zone C4.10. Select the isometric view and drag it to Zone E4.