manual unigraphics nx - 05 face operations

7/27/2019 Manual Unigraphics Nx - 05 Face Operations

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Face Operations

Practical Applications ofUnigraphics Student Manual 5-1EDSAll Rights Reserved

Face Operations

Lesson 5

PURPOSE To introduce the Hollow face operation.

OBJECTIVES Upon completion of this lesson, you will be able to:

D Hollow a solid body.


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Face Operations

Practical Applications ofUnigraphics Student Manual5-2

Unigraphics NXEDSAll Rights Reserved

Face Operations

Face Operations are available to provide additional definition to the faces of amodel. The Face Operations are Taper, Hollow, and Offset Face .

In this lesson, the Hollow operation will be discussed.


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Face Operations


Hollow

The Hollow operation creates a cavity inside, or a shell around an existing solid,

based upon a specified thickness. The entire solid body is hollowed during thisoperation.

In the figure below, the top face has been selected as the face to be pierced.

Before After

Face to bepierced

Thickness

Wall Thickness Value

Positive or negative values may be used as follows:

D Positive values will hollow the existing solid so that the wall thickness ismeasured inward from the original faces of the solid.

D Negative values for the wall thickness will result in a hollow that forms ashell of the specified value around the original solid.


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Choosing Insert"Feature Operation"Hollowfrom the main menu will displaythe following dialog box for hollow creation.

Piercedface

Face

Offsetface

Body

Region

Default

Thickness

TypeFilter

AlternateThickness

A hollow may be created in three different ways:

D The "Face" button may be chosen to select pierced faces individually.

D The "Region" button may be selected to quickly select a region of faces tobe pierced. Since a region of the body is pierced rather than individualfaces, any changes in the region are automatically reflected in the hollow.

D The "Body" button may be selected to create a void region in a bodywithout piercing any faces.

A unique thickness may be assigned for each face with the Offset Face option.When Offset Face is selected the Alternate Thickness text box becomes active.Using variable thickness hollows reduces the number of features in the part, asthe offset features are not required, and results in more compact models thatare easier to comprehend.


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Face Operations


Activity 1 - Performing a Hollow Operation

In this activity the Hollow operation will be used to take material away from themodel of a plastic molded part.

Step 1 Open the Part File.- Open the part filepau_hair_dryer_1, and start the Modeling

application.

The figure below illustrates the solid that will be hollowed.

Right

Step 2 Inspect the Part.

- Set the Display Mode to Shaded and Rotate the part

to verify that the solid requires hollowing.

Step 3 Hollow the solid and pierce the proper faces.

- Set the display mode back to Wireframe and Restorethe view (third mouse button).


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Face Operations



- Choose the Hollowicon from the Feature Operationtoolbar.

- Enter a Default Thicknessof2.

- Select the right, and back side faces to pierce.

- After both of the desired faces are selected to be pierced,choose OKtwice. The finished part is shown below.

Right face

Back side face

Step 4 Inspect the Part.

- Set the Display Mode to Shaded and Rotate the part(third mouse button).

Step 5 Choose File"Close"All Parts.


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Face Operations


Activity 2 - Hollow and Selection Practice

In this activity the Hollow operation will be used to create a sheet metal part.

Step 1 Open the Part File.

- Open the part filepau_hollow_1, and start the Modelingapplication.

The figure below illustrates the solid that will be hollowed.

Front

Step 2 Create a hollow feature.

- Choose the Hollowicon.

- Enter a Default Thicknessof.12.

- Select the 5 following faces to pierce: front, back, left, right,and bottom.


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Face Operations



- After all the desired faces are selected to be pierced, chooseOKtwice. The finished part is shown below.

- Choose EditUndo ListHollow.

- Repeat the operation with a thickness of-.12 and examinethe result.

Step 3 Choose File"Close"All Parts.


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Face Operations


Activity 3 - Creating a Hollow Feature with an Offset

This simple activity will demonstrate the application of a hollow feature with anoffset face.

Step 1 Open the Part File.

- Open the part filepau_hollow_2, and start the Modelingapplication.

Step 2 Hollow the solid.

- Choose the Hollowicon.

- Enter a Default Thickness of4.

- Select the faces to pierce as shown below.

Select the 3faces that areNOT shaded.

- Choose the Offset Face icon.

- Key in anAlternate Thickness of8.


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Face Operations



- Select the face to offset as shown below.

Select this faceto offset.

- Choose OK.

Step 3 Close the part, do not save.


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SUMMARY The Hollow operation creates a cavity inside,or a shell around an existing solid, based upona specified thickness. In addition, selectedfaces may be assigned various offset thickness.

In this lesson you:

D Specified a Default Thickness.

D Specified a Alternate Thickness.

D Specified Faces to be Pierced.

D Specified Faces to be Offset.

D Created a Hollow Feature.


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Face Operations

Practical Applications ofU i hi St d t M l5 12

Unigraphics NXEDSAll Ri ht R d

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manual unigraphics nx - 05 face operations

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