CAD For Students

Q - What are different applications in NX?

There are many different types of applications in NX. Some of the most commonly used applications are:

Gateway

Modeling

Assemblies

Drafting

Sheet Metal

Manufacturing

Other applications are:

PMI

Shape Studio

Animation Designer

Additive Manufacturing

Motion

Design Simulation

Routing (Mechanical, Electrical)

Ship Design

You can start a particular application by selecting suitable template from File > New. If model template is selected then file will open modeling application. If sheet metal template is selected then file will open in sheet metal application. Similar for other available templates also.

Q - What do you mean by Gateway Application in NX?

Gateway is one of the NX application in NX. It is like a viewer. While gateway application is active, you can start or enter into other application, do measurements.

Q - What is 'No Part' state?

As name suggests 'No Part' state is a condition when there is no part open. Simply a open NX window without any active application. Not even gateway application.

Q - What are types of modeling modes in NX? or

Q - What is History mode in NX? or

Q - What is History-free mode in NX ? or

Q - Difference between History Mode and History-free mode in NX?

There are two types of modeling modes in NX
1) History mode
2) History-free mode

Both modes are available till the version NX10 as History-free mode is retired in NX11.

History mode
With history mode, features are displayed in the part navigator. History is stored as different commands are used to create a model.

History-free mode
With history free mode, there are no features displayed in the part navigator. No history is stored.

Q -What is Master Model Concept? or

Q - What is Master Model approach? or

Q - What are the advantages or benefits of Master Model Concept? or

Q - Why Master Model Concept is required?

Master Model Concept or Master Model Approach

Master model concept or master model approach is a method where single model is created as a "Master" and it is used for downstream applications to derive data in the respective application.

Separate part files can be created for each application and can be worked on downstream applications concurrently (to facilitate Concurrent Design/Concurrent Engineering). While for each downstream application, data is linked and associative to the geometry of the master model part. So whenever there is change in the master model then those changes will be reflected in the downstream application part files automatically.

So, it is a concept/approach which can be used/implemented in native NX or managed NX (Teamcenter NX) or any other CAD/CAM/CAE (CAx) software.

Master model can also be referred as master part or cad part or design part.

A Master model can be

A piece part file containing some geometry

An assembly part file containing different multiple piece parts (as components in context of the assembly) where each piece part file contains some geometry

Part files which are created in the downstream applications are referred as non-master part files.

Master model is used for downstream applications like

Drafting (Drawing data)

Manufacturing (NC data)

Analysis (FEA/FEM data)

Each application can have single/multiple design templates and master model can be added to those templates as a component. Work can be carried out further in respective application simultaneously before getting master model ready.

You can create drawing, NC data in same part file (No master model approach). It is choice up to you. With master model approach following benefits can be achieved

Easy part file/revision management (Both master/non-master part files)

Reduced part file sizes resulting in better loading performance

Concurrent design/Concurrent engineering

So Master model concept or approach is considered as "Best Practice".

Q - What is meant by UDF (User Defined Feature) ? or

Q - What is meant by the User Defined Features?

User Defined Feature (UDF) is a group of standard features that are created and saved in reuse library of NX.

Rules can be created to ensure that features are in line with the standards and size limits. While adding a UDF to target model, UDF parent inputs and size parameters can be defined. They can be used as a common group of features whenever needed in design process.

While using a UDF, it may be case that some features are not required as per application. Expressions (Suppress By Expression command) can be used to control and determine what features become active and non-active when used in target model.

During User Defined Features creation, the designer defines the shape and control characteristics (external references and parametric values) of User Defined Features andnstores it in a hierarchical library.

For example, standard holes, pockets, pads, embosses, flanges and cutouts can be organized into User Defined Features libraries.

User Defined Feature Wizard lets you create UDFs, and save them as special part files. These part files can be used as a user defined feature in the Modeling application, and the data can be added as a feature to a target solid.

To summarize, following are the benefits of using UDF's (User Defined Features)

Reduces repetitive design operations by using customized design elements

Eliminates design variability and encourages adherence to company design standards

Automates the use of commonly used design elements

Simplifies the product model

Supports re-use initiatives

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