creo 3.0 lab activities

Project I

Module Overview:

Using Creo Parametric and the skills learned thus far in this course, complete the following project design

tasks.

Objectives:

After successfully completing this module, you will be able to:

Create the PISTON_PIN.PRT, PISTON.PRT, CONNECTING_ROD.PRT, CRANKSHAFT.PRT,

ENGINE_BLOCK.PRT, IMPELLER_HOUSING.PRT, IMPELLER.PRT, FRAME.PRT, and

BOLT.PRT models.

Concept: The Air Circulator

Project Scenario

ACME Incorporated develops and markets several consumer, industrial, and defense goods. The Light

Industrial Division of ACME creates a number of products, including industrial fans, heating, air conditioning,

and pumps. You work for the Light Industrial Division of ACME Inc., which has recently started using Creo

Parametric for its product designs.

Upon returning from Creo Parametric training, you are assigned to create the AC-40 Air Circulator.

Figure 1 – Air Circulator

Minimal Instructions

Because all tasks in this project are based on topics that you have learned thus far in the course, instructions

for each project step are minimal. Detailed picks and clicks are not provided. This enables you to test your

knowledge of the materials as you proceed through the project.

Completed Models for Reference

Be sure to save all project models within the Intro-1_working sub-folder of the Projects lab files folder

structure. The Projects folder also contains a sub-folder named Intro-1_completed. Here you can find a

completed version of each model in the project. These completed models can be used as references, if

required.

Concept: Piston Assembly Components

Creating the Piston Pin, Piston, and Connecting Rod Components

These figures illustrate the piston pin, piston, and connecting rod components you create in the beginning

of this project.

Figure 1 – PISTON_PIN.PRT

Figure 2 – PISTON.PRT

Figure 3 – CONNECTING_ROD.PRT

Concept: Crankshaft, Engine Block, Impeller, and Impeller Housing

Creating the Crankshaft, Engine Block, Impeller, and Impeller Housing Components

These figures illustrate the crankshaft, engine block, impeller, and impeller housing components you create

in this project.

Figure 1 – CRANKSHAFT.PRT

Figure 2 – ENGINE_BLOCK.PRT

Figure 3 – IMPELLER.PRT

Figure 4 – IMPELLER_HOUSING.PRT

These models are slightly more complicated than the previously created piston assembly components. You

complete the crankshaft model in this project, but the engine block, impeller, and impeller housing are

completed in a subsequent project.

Concept: The Frame and Bolt

Creating the Frame and Bolt Components

These figures illustrate the frame and bolt components you create in this project. The frame is completed

in a subsequent project.

Figure 1 – FRAME.PRT

Figure 2 – BOLT.PRT

Exercise: Creating the PISTON_PIN.PRT

Scenario

ACME Incorporated develops and markets several consumer, industrial, and defense goods. The Light

Industrial Division of ACME creates a number of products, including industrial fans, heating, air conditioning,

and pumps. You work for the Light Industrial Division of ACME Inc., which has recently started using Creo

Parametric for its product designs.

Upon returning from Creo Parametric training, you are assigned to create the AC-40 Air Circulator. You

apply the skills learned in previous topics of this course to create the final assembly and components of the

air circulator.

Step 1. Create the piston pin part.

1. Create a new part named PISTON_PIN.PRT.

2. Enable only the following Datum Display types: .

3. Create the extrude feature, as shown.

Figure 1

4. Save the model and close the window.

You must center the model on datum plane FRONT.

Use the mmns_part_solid template for this and all models in this project.

To help verify the correct datum entities, enable datum tag display for this project.

This completes the exercise.

Exercise: Creating the PISTON.PRT

Step 1. Create the piston part and extrude the main body.

1. Create a new part named PISTON.PRT.


Figure 1


Step 2. Hollow the piston to make room for the connecting rod.

1. Remove material, as shown.

Figure 2

2. Rename the cut as OVAL_CUT.

Figure 3

The sketch should be symmetric about the vertical reference.

Control the upper wall thickness of the piston by placing the sketch on an embedded datum plane,

offset from datum plane TOP.

Regardless of the length of the original protrusion, the cut should always extrude though the entire

model.

Step 3. Remove material from the bottom of the piston.


Figure 4

Step 4. Create a hole to attach the piston pin.

1. Create a hole through the model.

Figure 5

The hole should be placed on datum plane FRONT and its depth should extend through the entire

model in both directions. It should be aligned to datum plane RIGHT.

Step 5. Apply an appearance to the piston.

1. Apply the Blue_Dark appearance to the model.

Figure 6



Exercise: Creating the CONNECTING_ROD.PRT

Step 1. Create the connecting rod and extrude the main body.

1. Create a new part named CONNECTING_ROD.PRT.


2. Create the extrude feature, as shown. Create the sketch on datum plane FRONT, and extrude it symmetric

about datum plane FRONT.

Figure 1

Sketch two circles, two tangent lines, and then use dynamic trim to create the sketch.

Because this is the first feature of the model, use Modify with the Lock Scale option to modify the

dimension values.

Step 2. Create extrude features at both ends of the connecting rod.

1. Create two extrude features, one at each end of the connecting rod. The extrude features should be

symmetric about datum plane FRONT.

Figure 2

Figure 3

Step 3. Create holes at each end of the connecting rod.

1. Create coaxial holes at both ends of the connecting rod. The hole depths should extend through the entire

model.

Figure 4

Create embedded axes to locate each hole.

Step 4. Create a round to strengthen the connecting rod.

1. Create a round feature, as shown.

Figure 5

Each of the four rounded edges should be driven by the same dimension.

Step 5. Create a lubrication hole.

1. Create a radial hole on the right end of the model. The hole depth should only extend through the next

surface.

Figure 6

Step 6. Apply an appearance to the connecting rod.

1. Apply the Blue_Dark appearance to the model.

Figure 7



Exercise: Creating the CRANKSHAFT.PRT

Step 1. Create the crankshaft and extrude the main body.

1. Create a new part named CRANKSHAFT.PRT.



Figure 1

Step 2. Create the crankshaft lobe.

1. Create an extrude feature, as shown.

Figure 2

Figure 3

Use a construction circle to control the outer diameter of the lobe and a vertical centerline to imply

symmetry.

Step 3. Create the crankshaft pin.


Figure 4

Step 4. Create a hole to hollow out a portion of the crankshaft.

1. Create a hole, as shown.

Figure 5

The hole should be coaxial to the original cylindrical feature.

Step 5. Create an opening for intake gases to enter the crankcase.


Figure 6

Figure 7

2. Rename this cut as INTAKE_CUT.

The cut's sketch plane should be embedded in the cut feature.

The cut should extend through only one side of the crankshaft.

Step 6. Create a cut that is used to interlock with the impeller.


Figure 8

The cut should not affect the overall length of the model.

Step 7. Create a cut to form a circular shaft for threads.


Figure 9

The cut should not affect the overall length of the model.

Step 8. Bevel the edges of the intake cut and the end of the crankshaft.

1. Create a chamfer, as shown.

Figure 10

Both legs of the chamfer should have the same dimension (D x D).

Step 9. Apply an appearance and save the orientation.

1. Apply the Gray_Dark appearance to the model.

Figure 11

2. Save the current orientation to an orientation named 3D.



Exercise: Creating the ENGINE_BLOCK.PRT

Task 1. Create the engine block part and revolve the main body of the model.

1. Create a new part named ENGINE_BLOCK.PRT .


2. Create the revolve feature, as shown.

Figure 1

Figure 2

Task 2. Create datum features to use as references when constructing other features.

1. Create a datum plane offset from datum plane FRONT. Rename the plane to CTR.

2. Create a datum axis at the intersection of datum planes RIGHT and CTR. Rename the axis to CYL.

Figure 3

Datum plane CTR and axis CYL are used later in the project as references for other features.

Task 3. Create the engine block cylinder.

1. Create a straight three-section parallel blend protrusion, as shown.

Figure 4

Figure 5

Sketch on datum plane TOP, and select datum plane CTR as a horizontal dimensioning reference.

The second and third blend sections are identical. SpecifyStraight as the Option.

Task 4. Add rounds to shape the cylinder.

1. Create a round on the four edges of the blend.

Figure 6

2. Create a single round feature, as shown.

Figure 7

Task 5. Create a protrusion to use as a mounting flange.


Figure 8

Figure 9

Select datum plane CTR and the silhouette edges of the revolve feature as references.

The sketch should be symmetrical about datum plane CTR and mirrored about the vertical centerline.

The depth of the feature should be symmetric about datum plane TOP.

Task 6. Create mounting bolt holes.

1. Create coaxial holes, as shown.

Figure 10

Create an embedded datum axis for each hole. The datum axes should be placed through the

mounting flange arc centers.

2. Mirror the two holes to the other side of the engine block.

Figure 11

3. Group the extrude, two holes, and the mirror feature.

4. Rename the group as MOUNT1 .

Task 7. Create holes for the crankshaft, crankcase, and cylinder bore.

1. Create a hole through the engine block.

Figure 12

2. Create another hole, as shown.

Figure 13

3. Create the cylinder bore hole, as shown.

Figure 14

4. Rename this hole as BORE.



Exercise: Creating the IMPELLER_HOUSING.PRT

Task 1. Create the impeller housing and extrude the main body of the model.

1. Create a new part named IMPELLER_HOUSING.PRT.



Figure 1

Task 2. Begin creation of the exhaust geometry.

1. Create a 90° revolve feature, as shown.

Figure 2

Figure 3

Create the sketch on datum plane TOP. The sketch should be symmetric about the horizontal

reference.

Task 3. Create the exhaust geometry.

1. Create a smooth parallel blend feature, as shown.

Figure 4

Figure 5

This blend contains three symmetric rectangular sketches, each 25 mm apart. The first section should

use the edges from the revolve feature.

Be sure that the start point for each rectangle is at the same location and direction.

Task 4. Shape the exhaust for maximum airflow.

1. Create round features, as shown.

Figure 6

Figure 7

Figure 8

Task 5. Hollow out the housing.

1. Create a shell feature, as shown.

Figure 9

Two surfaces are to be removed using this shell feature.

Task 6. Create a hole for the impeller collar.

1. Create a hole feature, as shown.

Figure 10

Task 7. Create the bolting flange.


Figure 11

Figure 12

The extrude feature should extend over the model, as shown.

Task 8. Create the mounting flange.


Figure 13

The extrude feature should extend symmetrically in both directions from the datum plane FRONT.

Task 9. Create an attach hole in the mounting flange.

1. Create the hole, as shown.

Figure 14

Task 10. Create a profile rib to strengthen the mounting flange.

1. Create the profile rib feature on an embedded datum, as shown. The rib should be symmetric about the

embedded datum.

Figure 15

Figure 16



Exercise: Creating the IMPELLER.PRT

Step 1. Create the impeller and revolve the main body of the model.

1. Create a new part named IMPELLER.PRT.


2. Create a revolve feature, as shown.

Figure 1

Figure 2

Sketch on datum plane RIGHT with datum plane TOP facing right.

Step 2. Create the interlock geometry.

1. Extrude the cut feature, as shown. Create the sketch on the small circular surface on the back of the

model, orienting datum plane TOP so that it faces the top.

Figure 3

Step 3. Create the first impeller blade.

1. Create an extrude feature with the thicken option, as shown.

Figure 4

Figure 5

2. Rename the extrude to BLADE.

Create the sketch on datum plane FRONT so that it extrudes through the model. Dimension the arc

using an arc angle dimension.

Step 4. Round the sharp corner of the blade.

1. Create a round feature, as shown.

Figure 6

2. Rename the round feature to BLADE_ROUND.

Step 5. Create an outer support for the blade.


Figure 7

The depth of this feature should extend from the end of the blade, inward over the model.

2. Save and close the model.


Exercise: Creating the FRAME.PRT

Step 1. Create the frame part and trajectory for the main rail.

1. Create a new part named FRAME.PRT.


2. Create a sketch feature, as shown. This sketch can be used as the trajectory for a swept protrusion.

Figure 1

Figure 2

Step 2. Sweep an I-profile section along the sketch trajectory.

1. Create a constant section sweep protrusion, as shown.

Figure 3

Figure 4

Select the predefined I-profile from the Palette as the section to sweep. Relocate the X Location

handle to the midpoint of the bottom edge. The section should be symmetric about the vertical

reference and above the horizontal reference and trajectory.

Step 3. Sweep another I-profile for the engine support.

1. Create a sketch feature on an embedded datum plane, as shown. This feature is the trajectory for your

next sweep.

Figure 5

Use datum plane FRONT as a dimensioning reference.

2. Create a swept protrusion, as shown.

Figure 6

Figure 7



Exercise: Creating the BOLT.PRT

Task 1. Create the bolt and revolve the main body.

1. Create a new part named BOLT_5.PRT.


2. Create the revolve feature, as shown.

Figure 1

Task 2. Create a hex socket cut.


Figure 2

Select the predefined 6–sided Hexagon section from the Palette as the section to extrude.

Task 3. Create finishing features.

1. Create a round and chamfer, as shown.

2. Apply the Black appearance to the bolt.

Figure 3

3. Save the model.

Task 4. Create two additional bolts of different lengths.

1. Save a copy of the part BOLT_5.PRT. Rename it as BOLT_8.PRT.

2. Close the window.

3. Open the new part BOLT_8.PRT.

4. Edit the length of the model from 5 to 8 and save the model.

Figure 4

5. Save a copy of the part BOLT_8.PRT. Rename it as BOLT_12.PRT.

6. Close the window.

7. Open the new part BOLT_12.PRT.

8. Edit the length of the model from 8 to 12.

Figure 5

