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Design Applications Using NX

Workbook

Publication Number mt10055_w NX 4

Manual History

ManualRevision Software

Version Publication Date

This edition obsoletes all previous editions.

Proprietary & Restricted Rights Notice

This software and related documentation are proprietary to UGS Corp. © 2006 UGS Corp. All Rights Reserved. All trademarks belong to their respective holders.

©2006 UGS Corp. All Rights Reserved. Produced in the United States of America.

2 Design Applications Using NX mt10055_w NX 4

Overview5
Impeller Assembly — An approach in methodology5
The Inner Moldline of the Bottom Housing1 -1
Overview1- 1
Creating the Inner Mold Line of the Bottom Housing1- 2
Creating the Bottom Housing2 -1
Overview2- 1
Creating the Flange2- 2
Creating the Assembly Part File3 -1
Overview3- 1
Creating the Assembly3- 2
Creating the Upper Housing4 -1
Overview4- 1
Creating the Upper Housing4- 2
Creating the Impeller, Part 15 -1
Overview5- 1
Defining Body & Blade5- 2
Creating the Impeller, Part 26 -1
Overview6- 1
Trimming the Blades6- 2
Creating the Impeller, Part 37 -1
Overview7- 1
Adding Blends7- 2
Creating the Impeller, Part 48 -1
Overview8- 1
Mating the Impeller to the Assembly8- 2

Contents ©UGS Corp., All Rights Reserved Design Applications Using NX 3

Creating the Shaft Subassembly9 -1
Overview9- 1
Creating the Impeller Interface of the Shaft subassembly9- 2
Creating the Center Section of the Shaft subassembly9-10
Creating the Final Section of the Shaft subassembly9-13
Adding Hardware to the Assembly10-1
Overview10- 1
Adding Fasteners10- 2
Editing the Assembly Part File1-1
Overview1- 1
Editing the Assembly1- 2
Providing a Second Arrangement12-1
Overview12- 1
Adding Alternate Arrangements12- 2
Applying a Revision to the Assembly13-1
Overview13- 1
Revising the Assembly13- 2

Contents 4 Design Applications Using NX ©UGS Corp., All Rights Reserved mt10055_w NX 4

Overview

Impeller Assembly — An approach in methodology

The Impeller assembly is a conceptual design for a mechanism to translate water flow into axial rotation. For this course, consider the design to be in progress and know that it will not be totally completed in this class.

The design you will model may or may not be the correct approach. This in itself mimics real life situations. As a design is reviewed by different disciplines, it matures from the recommendations made by those disciplines. In this class, what is more important is gaining an understanding of the methodology of using a combination of NX functions to capture an aspect of the total design intent.

Below is an illustration of the Impeller assembly you will model.

©UGS Corp., All Rights Reserved Design Applications Using NX 5

1 Lesson

1 The Inner Moldline of the Bottom Housing

Overview

The design intent for the bottom housing is that its size and shape be controlled parametrically.

Youw ill create as ketcht od efine the inner mold line of the bottom housing. Later, you will use this same sketch to define the outside shape of the impeller.

©UGS Corp., All Rights Reserved Design Applications Using NX 1-1

1 The Inner Moldline of the Bottom Housing

Creating the Inner Mold Line of the Bottom Housing Step 1: Create a new inch part file called ***_housing_bottom.

Step 2: Create Generator geometry for the inside mold line.

Since one of the design requirements is that the size and shape be controlled parametrically, the inside mold line will be sketched.

Keep class layer standards in mind. There is a macro in your application folder to create the class standard layers:

Tools→Macro→Playback

Navigate to application and choose set_layers.macro

Create a sketch named mold_line on the X-Z absolute coordinate plane.

1-2 Design Applications Using NX ©UGS Corp., All Rights Reserved mt10055_w NX 4

1 The Inner Moldline of the Bottom Housing

Sketch the curves as illustrated below and apply the required constraints.

• Rename the constraint (1) inner_radius as shown below. This is being done so that this constraint may be identified easier, later in the course.

• The inside mold line is made up of two lines and two arcs.

• Curves that have a common end point should be constrained tangent to each other.

• The left endpoint of the lower left horizontal line is located Point onto Curve relative to the vertical datum axis. • The two lines should have horizontal constraints.

Step 3: Save the part and close.

©UGS Corp., All Rights Reserved Design Applications Using NX 1-3

Lesson 2C reating the Bottom Housing

Overview

In the previous section, an aspect of the design intent for the bottom housing was captured by creating a sketch that controlled the size and shape of the inner mold line. In this section of the activity you will continue to capture additional design intent for the bottom housing. The additional aspects are:

•T he flange width is based on the bolt hole size

• The number of bolt holes are controlled parametrically

©UGS Corp., All Rights Reserved Design Applications Using NX 2-1

Creating the Bottom Housing

Creating the Flange Step 1: Open ***_housing_bottom.

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