Extend (Face) : Tangent

Access: Open this function from one of the following locations:

Extend faces beyond their edges. This extends one or more faces (or creates new faces) on the edges of open or stitched faces.

In the Tangent option, extend the face in the direction tangent to the existing face. In this option the extensions are always new faces.

Demo: Press the button below to view a short movie demonstrating the function:

Practice: Press the button below to open Cimatron with a practice ELT file similar to that used to create the movie (if the relevant feature already exists in the ELT file, you can either edit it or delete it and create a new feature).

Tangent > Normal:

 

   
   

Tangent > Continuous:

 

Required Step 1

Select Tangent from the dropdown list of Extend function options:

For the face(s) to be extended, pick one or more edges or a composite curve based on the edges of open or stitched faces and set the parameters.

In the example below a composite curve is picked.

Once the edge(s) or composite curve is selected, additional parameters are displayed.

Set the parameters as required:

Normal

This is a toggle option Normal / Continuous that enables you to define the type of extension created. In the Tangent option, the extensions are always new faces.

Normal

Create extension(s) normal to the faces whose edges were selected. These extensions are always new faces.
Examples:Examples:

The normal extensions are previewed.

The result: extensions are created normal to the faces whose edges were selected.

 

Continuous

Create extension(s) continuous with the faces whose edges were selected. These extensions are always new faces.
Examples:Examples:

The continuous extensions are previewed.

The result: extensions are created continuous with the faces whose edges were selected.

 

Simple examples of Tangent - Normal/Continuous options: ExamplesExamples.

Tangent - Normal:

Tangent - Continuous:

Delta

The length of the extension.

Multi Faces

This is a toggle option Multi Faces / Single Face that enables you to define the extension(s) as a single face or multiple faces. This option is only displayed if a composite curve was selected.

Multi Faces

Extend multiple faces and create an extension consisting of multiple new faces, based on the faces whose edges were selected.
Example:Example:

 

Single Face

Extend multiple faces but create an extension consisting of a single new face.
Example:Example:

The option Max. Smooth Angle is displayed. This defines the maximum angle enabling you to control the smoothness of the extension.

When selecting a composite curve, it is possible to change the direction of the extension by picking any point along the composite curve, or edges adjacent to the face of the composite, and entering angle values. This allows you to control the smoothness of the extension. These result in direction changes to the extension as shown in the examples below:
Examples:Examples:

Note: If the Flip option is used, all angle data is lost.

 

Flip

Flip the direction of the extension. The system flips the direction by automatically choosing the neighboring face's edge. This option is only displayed if at least one selected edge (or an edge from the picked composite curve) is an edge of a stitched face.
Examples:Examples:

 

Optional Step 1

Set a draft angle. This option is only available for the Tangent > Normal option.
See Options and Results.

Optional Step 2

Pick edges to replace the extended faces with a patch. This option is only available for the following options:

  • Tangent > Normal option if the Single Face option was not selected in Required Step 1.

  • Tangent > Normal option if the Draft Angle option was not selected in Optional Step 1.

  • Tangent > Continuous

  • Natural - Multi Continuous

This step can be used to create patches on complex areas that may require additional manipulation to achieve the desired result.
See Options and Results.

Click OKOK or ApplyApply in the Feature Guide to complete the function.

When completed, the Extend feature will appear in the Feature Tree as follows:

 

Some functionality may be dependent on the product package. Contact your Reseller if you require a license.