3.2

11/19/13 3.2. Reference Elements & Sketch Based Features | CATIA Master

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3.2. Reference Elements & Sketch Based Features

Posted: January 15, 2012 in 2. Part Design

0Objectives:

• Understand the importance of sketching planes.• Create reference elements.

• Create drafted filleted pad features.

• Create multi-pad features.• Use feature termination options.

• Create pocket features.• Create groove features.

• Extrude and revolve the planar and curved faces.

IMPORTANCE OF SKETCHING PLANES:• Most mechanical designs consist of multiple features such as sketched features, referenced

elements, and placed features that are integrated to complete a model.• You can select any one of the default planes as the sketching plane to create the sketch of

the base feature.

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(http://catiamaster.files.wordpress.com/2011/12/base-feature-of-the-model.png)Base feature of the model

http://catiamaster.files.wordpress.com/2011/12/base-feature-of-the-model.png



(http://catiamaster.files.wordpress.com/2011/12/a-multifeatured-model.png)A multifeatured model

• Reference Planes: You need to select other default planes or create new planes to be used asthe sketching plane for other features.• Default Planes: The three default planes are: xy, yz, and zx plane. It is recommended thatyou carefully select the sketching plane for drawing the sketch of the base feature, which can

be drawn on one of the three datum planes provided by default.>>>Creating New Planes:

(http://catiamaster.files.wordpress.com/2011/12/plane-icon.png)

Plane icon in Catia

To create a new plane, choose the Plane button from the Reference Elements (Expanded)toolbar. The Plane Definition dialog box is displayed, as shown in the figure.

http://catiamaster.files.wordpress.com/2011/12/a-multifeatured-model.png

http://catiamaster.files.wordpress.com/2011/12/plane-icon.png



(http://catiamaster.files.wordpress.com/2011/12/the-plane-

definition-dialog-box.png)The Plane Definition dialog box

• Creating a Plane at an Offset from Existing Plane/Planar Face:

(http://catiamaster.files.wordpress.com/2011/12/reference-planar-face-and-the-resulting-

plane.png)Reference planar face and the resulting plane

• Creating a Plane Parallel to an Existing Plane and Passing Through Point:

http://catiamaster.files.wordpress.com/2011/12/the-plane-definition-dialog-box.png

http://catiamaster.files.wordpress.com/2011/12/reference-planar-face-and-the-resulting-plane.png



(http://catiamaster.files.wordpress.com/2011/12/reference-planar-face-sketched-point-and-the-

resulting-plane.png)Reference planar face, sketched point, and the resulting plane

• Creating a Plane at an Angle/Normal to Plane:

(http://catiamaster.files.wordpress.com/2011/12/rotation-axis-reference-plane-and-the-

resulting-plane.png)Rotation axis, reference plane, and the resulting plane

• Creating a Plane Through Three Points:

http://catiamaster.files.wordpress.com/2011/12/reference-planar-face-sketched-point-and-the-resulting-plane.png

http://catiamaster.files.wordpress.com/2011/12/rotation-axis-reference-plane-and-the-resulting-plane.png



(http://catiamaster.files.wordpress.com/2011/12/three-vertices-to-be-selected-and-the-

resulting-plane.png)

Three vertices to be selected and the resulting plane

• Creating a Plane Through two Lines:

(http://catiamaster.files.wordpress.com/2011/12/vertices-to-be-selected-and-the-resulting-

plane.png)Vertices to be selected and the resulting plane

• Creating a Plane Through Point and Line:

http://catiamaster.files.wordpress.com/2011/12/three-vertices-to-be-selected-and-the-resulting-plane.png

http://catiamaster.files.wordpress.com/2011/12/vertices-to-be-selected-and-the-resulting-plane.png



(http://catiamaster.files.wordpress.com/2011/12/the-point-and-line-to-be-selected-and-the-resulting-plane.png)

The point and line to be selected, and the resulting plane

• Creating a Plane Through Planar Curve:

(http://catiamaster.files.wordpress.com/2011/12/the-planar-curve-to-be-selected-and-the-resulting-plane.png)

The planar curve to be selected and the resulting plane

• Creating a Plane Normal to Curve:

http://catiamaster.files.wordpress.com/2011/12/the-point-and-line-to-be-selected-and-the-resulting-plane.png

http://catiamaster.files.wordpress.com/2011/12/the-planar-curve-to-be-selected-and-the-resulting-plane.png



(http://catiamaster.files.wordpress.com/2011/12/the-curve-to-be-selected-the-point-to-be-

selected-and-the-resulting-plane.png)The curve to be selected, the point to be selected, and the resulting plane

• Creating a Plane Tangent to Surface:

(http://catiamaster.files.wordpress.com/2011/12/the-reference-surface-to-be-selected-the-point-

to-be-selected-and-the-resulting-plane.png)The reference surface to be selected, the point to be selected, and the resulting plane

• Creating a Plane Using Equation: The Equation option is used to create a plane using theequation Ax+By+Cz = D, where the values of A, B, C, and D are variable and can be changed to

http://catiamaster.files.wordpress.com/2011/12/the-curve-to-be-selected-the-point-to-be-selected-and-the-resulting-plane.png

http://catiamaster.files.wordpress.com/2011/12/the-reference-surface-to-be-selected-the-point-to-be-selected-and-the-resulting-plane.png



modify the orientation of the plane.

• Creating a Plane Using a Mean Through Points: The Mean through points option is used tocreate a plane at an orientation defined by the mean of selected points.>>>Creating Points:

(http://catiamaster.files.wordpress.com/2011/12/points-icon.png)Points icon

To create points, choose the Point button from the Reference Elements toolbar. The PointDefinition dialog box is displayed, as shown in the figure.

(http://catiamaster.files.wordpress.com/2011/12/the-point-definition-dialog-box.png)

The Point Definition dialog box

• Creating a Point Using Coordinates:The Coordinates option is used to create a point by specifying the values of its coordinates.• Creating a Point On Curve:

The On Curve option is used to create a point on a selected curve.• Creating a Point On Plane:The On plane option is used to create a point on a selected plane.

• Creating a Point On Surface:The On Surface option is used to create a point on a selectedsurface.

• Creating a Point at the Circle Center:The Circle center option is used to create a point at the

center of the selected circle.• Creating a Point Tangent on Curve:The Tangent on curve option is used to create a pointtangent to the selected arc.

• Creating a Point Between Two Points:The Between option is used to create a point between two selected points by defining theratio of the distance from the two points.

>>Creating Reference Lines:

http://catiamaster.files.wordpress.com/2011/12/points-icon.png

http://catiamaster.files.wordpress.com/2011/12/the-point-definition-dialog-box.png



(http://catiamaster.files.wordpress.com/2011/12/line-icon.png)Line Icon

To create reference lines, choose the Line button from the Reference Elements toolbar; the

Line Definition dialog box is displayed.

OTHER SKETCH-BASED FEATURES:

>>>Creating Drafted Filleted Pad Features:

(http://catiamaster.files.wordpress.com/2011/12/drafted-filleted-pad.png)

Drafted Filleted Pad

Choose the Drafted Filleted Pad button from the Pads toolbar. The Drafted Filleted PadDefinition dialog box will be displayed, as shown in the figure.

(http://catiamaster.files.wordpress.com/2011/12/drafted-filleted-pad-dialogue-box.png)Drafted Filleted Pad Dialogue Box

http://catiamaster.files.wordpress.com/2011/12/line-icon.png

http://catiamaster.files.wordpress.com/2011/12/drafted-filleted-pad.png

http://catiamaster.files.wordpress.com/2011/12/drafted-filleted-pad-dialogue-box.png



(http://catiamaster.files.wordpress.com/2012/01/drafted-filleted-pad.png)Drafted Filleted Pad

Creating Multi-Pad Features

• To create a multi-pad feature, choose the Multi-Pad button fromthe Pads toolbar and thenselect the sketch to be extruded.• The Multi-Pad Definition dialog box is displayed,as shown in the figure.

(http://catiamaster.files.wordpress.com/2012/01/extruded-multi-loop-sketch.png)Extruded Multi-loop sketch

http://catiamaster.files.wordpress.com/2012/01/drafted-filleted-pad.png

http://catiamaster.files.wordpress.com/2012/01/extruded-multi-loop-sketch.png



(http://catiamaster.files.wordpress.com/2012/01/other-feature-termination-options.png)

Feature Termination at an Offset

You can also terminate the features at an offset from the planes or faces selected for featuretermination.

http://catiamaster.files.wordpress.com/2012/01/other-feature-termination-options.png



Feature Termination at an Offset

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3.2

Documents

resulting plane

plane button

plane parallel

zx plane

sketched features

multiple features

placed features

pocket features