Catia Tutorial

CATIA V5 Fundamentals

CATIA V5 Fundamentals Infrastructure

Sketcher Part Design 1

Assembly Design


General

The Workbench Concept Each workbench contains a set of tools that is dedicated to perform a specific task. The following workbenches are the commonly used: • •

•

• •

Part Design: Design parts using a solid modeling approach Sketcher: Create 2D profiles with associated constraints, which is then used to create other 3D geometry. Assembly Design: Assemble parts together with constraints Drafting: Create drawings from parts or assemblies Generative Shape Design: Design parts using a surface modeling approach

2


General

User Interface

C

A

D

Below is the layout of the elements of the standard CATIA application. A, Menu Commands B. Specification Tree C. Filename and extension of current document D. Icon of the active workbench E. Toolbars specific to the active workbench F. Standard Toolbar G. Compass H. Geometry area

G

B E H

F

3


General

Type of Documents The common documents are: A, A part document (.CATPart) B. An assembly document (.CATProduct) C. A drawing document (.CATDrawing)

A

B

C

4


General

Display Settings To improve the 3D surface accuracy, Use the Tools->Options... Command, then open the tab page Display->Performances

Then lower the fixed sag value to make the surface look smoother

You can also change the background color on the tab page Display->Visualization

5


General

View & Hide Toolbars - Select “View > Toolbars”. The list of current toolbars is displayed. Currently visible toolbars are indicated by a tick symbol to the left of the toolbar name. In the list, click the toolbar you want to view or hide. -

You can detach toolbars from the application window border by dragging the double line to the left of the toolbar: you can drag the toolbar anywhere around the screen, then dock the toolbar in the same or in another location by dragging it onto the application window border

-

To restore the original positions of the toolbars on the current workbench, select “View>Customize>Toolbars>Restore position”;

6


General

Change the view with the mouse A.

Panning enables you to move the model on a plane parallel to the screen. Click and hold the middle mouse button, then drag the mouse.

B.

Rotating enables you to rotate the model around a point. Click and hold the middle mouse button and the right button, then drag the mouse.

C.

Zooming enables you to increase or decrease the size of the model. Click and hold the middle button, then click ONCE and release the right button, then drag the mouse up or down.

7

Middle button Right button


General

Rendering Styles A. B. C. D. E. F.

Shading Shading with Edges Shading with Edges but without smooth edges Shading with Edges with hidden edges Shading with Material Wireframe

More:- To change the color or the degree of transparency, right-click on the element

8


General

Show & Hide A.

Hide/Show (Hide an element by transferring it to the “No Show” space) A

B.

B

Swap visible space (Swap the screen from “Show” to “No Show” or vice versa) You can select any elements in the “No Show” space and transfer it back to the “Show” space by clicking the “Hide/Show” icon For the hidden elements, their icons are shaded. 9

Elements are now hidden


General

Reference Planes The default reference planes are the first three features in any part file. Their names are derived from the plane they are parallel to, relative to the part coordinate system:

XY plane YZ plane ZX plane

It is impossible to move or delete the planes. The planes can provide a planer support on which to create a 2D sketch.

Global coordinate system

10


Sketcher

Create a Sketch 1.

Select a planer support (e.g. datum plane, planer solid face) from the specification tree or by clicking the support directly.

2.

Select the Sketcher Icon from any workbench where is possible to create a sketcher (e.g. Part Design workbench).

3.

CATIA switches the current workbench to the sketcher workbench; The viewpoint is now parallel to the selected plane.

2

1

3 11


Sketcher

Toolbars in sketcher A. B.

C. D.

E.

Profile: Create 2D elements, such as points, lines, arcs, circles and axes. Operation: Modify the existing elements, such as chamfer, fillet, trim, and mirror. Sketch tools: Provide option commands Constraint: Set various dimensional constraints (e.g. length, angle & radius) & geometrical constraints (e.g. coincidence, concentric, horizontal and symmetric) Visualization: Simplify the view

A

B

C

D

E

12


Sketcher

Construction Geometry Construction geometry is created within a sketch to aid in profile creation. Unlike standard geometry, it does not appear outside the sketcher workbench. Construction geometry is shown in dashed format. When the “Construction/Standard element” icon is on, all sketched elements will be created as construction elements.

You can also toggle any elements from standard to construction, or vice versa by clicking the “construction/standard element” icon.

Construction geometry 13


Sketcher

Sketch Assistant CASE-1

This is a line on the sketch

When the cursor is on the line, the line will turn in orange and an empty circle appears next to the cursor

When the cursor is at the endpoint of the line, a solid circle appears next to the cursor

CASE-2

Tangency We are going to draw a line, which is tangent to the arc

14

Before clicking the second point of the line, move the cursor until the system can detect that the line is tangent to the arc. Click and confirm the position.


Sketcher

Constraining the sketch •

Dimensional Constraints

•

(click the icon, then select the element(s))

• • • •

Geometrical Constraints (multi-select the two elements by pressing “CTRL” key and click the icon)

Length Distance Angle Radius/Diameter

• • • •

Perpendicularity Horizontal/Vertical Concidence Tangency

Remark: To create the dimensions continuously, double-click the icon so that the icon is always on until you reclick it again

•

Symmetry (multi-select the elements on the both side and then select the axis)

You can also create constraints with other sketches and 3D elements out of the sketch 15


Controlling the direction of a dimension constraint The default dimension direction is parallel to the line between the circle centre. To change the direction to horizontal or vertical, right mouse click and select the desired orientation.

16

Sketcher


Sketcher

Color and Diagnostic 1. 2. 3. 4.

White: Under-constrained Green: Fixed/Fully constrained Purple: Over-constrained Red: Inconsistent

Only case 1 & 2 are allowable in CATIA; for case 3 & 4, you must fix the error before quitting the sketcher workbench, otherwise a warning message will pop-out

17


Sketcher

View Orientation •

By default, the screen is parallel to the sketch support.

•

To making constraints between the sketch geometry and the 3D element, you may need to rotate the model into a 3D view.

•

To return the default orientation, select the “Normal View” icon.

18

We can create a distance constraint between the circle centre and the solid edge


Sketcher

Exiting the Sketcher •

To exit the sketcher workbench, select “Exit Workbench” icon

•

After that, the screen will be back to 3D view and the workbench will be switched back to the original.

19


Sketcher

Sketcher • EXERCISE 1 • • •

• • •

Create a sketch on xy plane Circle centre at (0,0,0) The geometry is symmetrical along both x, y axes. R40 must be tangent to R16 No endpoint is isolated Useless elements must be cleared 20


Part Design •

Feature-Based Solid Modeling Sketch

Pad

Hole Fillet

Parent and Children Relation

If deleting Hole, we get:

21

If deleting Fillet, we get:

If deleting Pad, we get:


Toolbars in Part Design A. B.

C.

D.

E. F. G.

Sketch-Based Features: Create a solid feature from a 2D sketch/profile Dress-Up Features: Add fillets/chamfers on the solid edge, add a draft onto the solid faces, Hollow the solid, offset faces… Transformation Features: Change the 3D position of the solid, duplicate the solid by mirroring/ patterning, scale up/down the solid… Surface-Based Features: Split the solid with a surface/plane, adding material onto surfaces… Reference Elements: Create a point, a line or a plane in the 3D space. Boolean Operations: Join different bodies in one/ Structuring the part history tree. Analysis: To display information about drafts/ surface smoothness/ threads & taps. 22

A B C

D E

G F


Limit Type Type of limit are : A. Dimension B. Up to Next C. Up to Last D. Up to Plane E. Up to Surface

A B C D E

surface

23

A new plane


Pad & Pocket A. B.

Pad (material added by extruding a sketch) Pocket (material removed by extruding a sketch)

A

B

B

You can define the extrusion direction by selecting a datum plane, a line, a planar surface, and a straight solid edge. 24

A


Shaft & Groove A. B.

Shaft (material added by rotating a sketch) Groove (material removed by rotating a sketch)

A

B

B axis You can draw the rotation axis in the profile sketch or draw another straight line as the axis

A 25


Rib & Slot A.

B.

Rib (material added by sweeping a profile along a center curve) Slot (material removed by sweeping profile along a center curve)

A

B

Profile Control

-Keep Angle keeping the angle value between the sketch plane used for the profile and the tangent of the center curve

-Pulling Direction

Center curve

Sweeping the profile with respect to a specified direction

Profile 26


Multi-sections Solid A.

B.

Multi-sections Solid (material added by sweeping one or more planar section curves along one or more guide curves Removed Multi-sections Solid (material removed in the same way)

A

B

Section 3

- You can use an additional guide curve to control sweeping path

- If sections do not have the same number of vertices, use “ratio coupling”

- You can always create another plane other than xyz planes

Section 2

Section 1 27


Comparison of common features Add/Remove material

Section along the guide

Guide/Center curve

Section profile

Pad

Add

Same

Straight line

Planar

Pocket

Remove

Same

Straight line

Planar

Rib

Add

Same

Curve

Planar

Slot

Remove

Same

Curve

Planar

Multi-section solid

Add

Various

Curve

Planar

Removed multisection solid

Remove

Various

Curve

Planar

28


Hole A.

Hole (circular material removed from the existing solid);

A

Several types of holes are available: Simple, Tapered, Counterbored, Countersinked, Counterdrilled.

To locate the center of the hole precisely inside the sketcher workbench, Select the “positioning sketch” icon

Positioning the hole center 29


Fillet A.

Fillet (creating a curved face of a constant or variable radius that is tangent to, and that joins, two surfaces.)

A Edge

Variable Radius

Face to face

- With the Tangency mode, a fillet is applied to the selected edge and all edges tangent to the selected edge

Tritangent

- With the minimal mode, a fillet is applied only to the selected edge 30


Chamfer A.

Chamfer (removing & adding a flat section from a selected edge to create a beveled surface between the two original faces common to that edge.) Length1

Angle

Two Dimensioning Modes

Length2 Length1

31

A


Draft A.

Basic Draft (adding or removing material depending on the draft angle and the pulling direction)

A Draft Angle

Neutral Element

Pulling direction Remark: Neutral element always keeps unchanged after a draft is created

Side faces to draft 32


Shell A.

Shell (empty a solid while keeping a given thickness on its sides)

A

Face to remove

The face-to-remove cannot be tangent to the nearby faces. All edges around the face should be sharp edges. 33


Translation & Rotation A.

Translation (translating a solid along a direction)

B.

Rotation (rotating a solid about an axis by a certain angle)

Be careful, the sketch won’t move with the solid. 34


Symmetry & Mirror A.

Symmetry (translating a solid to the other side of the mirror plane)

35

B.

MIrror (duplicating a solid on the other side of the mirror plane)


Patterns A. B. C.

Rectangular Pattern Circular Pattern User Pattern (duplicate the features at the points created in sketcher workbench)

A

B To duplicate a list of features, multi-select the features before clicking the icon “pattern” 36

C


Split the solid A.

Split (splitting a solid with a plane, a face or a surface)

A

The arrow is pointing to the material to keep; you can click on the arrow to reverse the direction

You can hide the cutting surface after the operation 37


Boolean Operations A. Assemble

A

+

=

+

=

B

C

D

The positive bodies are added together and if anyone of the body is negative then the material is removed from the other body.

B. Add

Two bodies are added together

C. Union Trim

-

The unwanted portion of the first body is removed from the second body.

= 38


D. Remove Lump This option removes the unwanted solid in the space.

=

E. Remove

E

-

=

F

First body is removed from the second body.

F. Intersection

+

Creates the intersection between two bodies.

=

39


Analysis A. Draft Analysis

A

B

C

The Draft Analysis enables to detect if the part drafted C. Tap and Thread Analysis will be easily removed from the die.

B. Curvature Analysis

Curvature analysis enables to map the curvature of a given surface.

40

Tap and Thread analysis shows how to display and filter out information about threads and taps contained in a CATPart document


Part Design - exercise • EXERCISE 2-

STEP 1 Open the CATPART file done in Exercise 1

Make sure that the current workbench is PART DESIGN Create a “Pad” with the height 5.5mm (first limit) 41


Part Design - exercise STEP 2

Create another sketch on zxplane The sketch should have an axis and a triangle with these dimensions (45deg, 35deg, 2.5mm High) One edge of the triangle should sit on the bottom side of the pad and its peak should not be inside the pad

Exit Sketcher Create a “Groove” with First Angle Limit 360deg 42

CATIA V5 Fu ndamentals


Create the 3rd Sketch on yzplane The sketch should have an axis and two lines, which are symmetrical

One end point sits on the axis and the other sits on the outermost plane of the solid Exit Sketcher Create a “Pocket” and select “Up to Last” for limits on both sides

43



Create the 4th Sketch (a circle Dia 28mm) on the top planar surface of the solid Create a “Pocket” with depth 1.5mm

STEP 5 Create an offset “Plane” (15mm from yz plane)

44


Part Design - exercise STEP 6 Create the 5th sketch on the offset plane Draw a circle (Dia 3.0mm; distance between the solid base and the circle center is 2.5mm) Exit Sketcher Create a “Pocket” with first limit “Up to Last”

STEP 7 Create “EdgeFillet” (2mm) at the 4 corners 45


Part Design - exercise STEP 8 Create another “EdgeFillet” (5mm) to remove the four sharp edges on the top surface

STEP 9

Create a “Chamfer” on both sides Length1= 1mm; Angle= 45deg

- END of Exercise 2

46


Assembly Design A Product stores a collection of components (parts or subproducts). The file extension is .CATProduct.

Product

Parts

bracklet ring

Sub-products

button body

Storing the constraints between parts or subproducts

bracklet 47


Create a New Product A.

B.

Create a New Product by: Switching to Assembly Design workbench; or Clicking File/New/Product

A

You can change the Product’s properties (e.g. name) by right-clicking here

Or

B 48


Insert an existing component

Right-click the product tree, then select ”Components>”Existing component…”

OR

Drag the part tree onto the product tree -or Use “copy & paste” function

49


Move components by Compass Active product Component being moved

Drag any of the green lines of the compass to move the component Remark: Drag the compass from the top-right corner of the window to the component you want to move; the Compass will turn in green color

(1)You can only move the components of the active product

(2) To reset the compass, drag it onto the global coordinate system at the bottom-right corner of the window 50


Constraints between components A. B. C. D. E.

Coincidence Constraint Contact Constraint Distance Constraint Angle Constraint Fix Component (fix a component in space; normally we ‘d fix at least one component)

51

A

B

C

D

E

When the cursor is pointing at the curved surface of the hole, its axis is highlighted

CATIA V5Fundamentals

Updating Constraints The constraints need to be “Updated”

Use compass to drag a component to another position

52

After selecting “Update” icon, the component is back to its original position


Instant Simulation

Their axes are coincided

The base is fixed

53

Drag the compass while pressing “shift” key on the keyboard; you will see that other components will move with the active component with respect to constraints


Interference check

Select Type “Contact & Clash”; “Between all components”; then “apply”

Clash: RED Contact: Yellow

Clearance: Green 54

Interference result


Sectioning After clicking “sectioning” icon, a section plane will be automatically created parallel to the yz plane at the product origin.

You can orient the section plane by dragging the redline of the plane 55

Volume Cut; When activated, one side of the volume will be hidden


Assembly Design - exercise • EXERCISE 3• Build the rest of components, such as ring, button, chain as the separate parts

• Assemble them together • Check any interference after assembly

56

CATIA V5 Generative Shape Design

CATIA V5 Parametric Surface Modeling

Generative Shape Design

57



Toolbars in Generative Shape Design A

B A. B. C.

D. E. F.

Wireframe: Create 3D curves / lines/ points/ plane Surfaces: Create surfaces Operations: Join surfaces, Split & Trim surfaces, Change the 3D positions of surfaces, Fillets… Replication: Pattern, Powercopy… Analysis: Connection analysis, Draft analysis, curvature analysis… Surface-based Features: (On Part Design Workbench), create a solid from surfaces, modify the solid by a surface… 58

C D

E F



Point Point (Create a point in the 3D space)

59



Extremum (max or min point) Extremum (create an extremum element (point, edge, or face), which is at the minimum or maximum distance on a curve, a surface, or a pad, according to given directions. )

60



Line Line (Create a line in the 3D space)

61



Plane Plane (Create a plane in the 3D space)

A- 6

62



Projection onto a support Projection (project one or more elements onto a support. The projection can be normal to surface or along a specified direction.)

Normal to surface

Along a direction (vertical)

63



Combine Curves Combine Curves (create a curve resulting from the intersection of the extrusion of two curves. )

A 3D resultant Curve

64



Reflect Line Reflect Line (create curves for which the normal to the surface in each point present the same angle with a specified direction. They can be closed or open.)

The normal of surface at all points along the curve is 38deg from the vertical axis

65

CATIA V5 Ge nerative Shape Design


Intersection Intersection (create wireframe geometry by intersecting elements.) Intersection curve between two surfaces Intersection point between a curve and a surface

Intersection curve between a surface and a solid

66



Parallel Curve Parallel Curve (create a curve that is parallel to a reference curve.)

Offset the curve on the surface (The resultant curve is still on the surface)

We have a curve lying on the surface

67



Corner Corner (create a corner between two curves)

If several solutions may be possible, click the Next Solution button to move to another corner solution, or directly select the corner you want in the geometry

68



Connect Curve Connect Curve (create a connecting curve between two curves. )

Point-continuous, tangent-continuous or curvature-continuous

Point-continuous, tangent-continuous or curvature-continuous

The curvature in the middle can be controlled by tension

69



Spline Curve Spline Curve (create a 2D/ 3D spline curve)

We can create an additional line to define the tangent direction at a point.

70



Helix Helix (create a helix curve like a spring)

First Create a point and a straight line

(Optional)

(Optional)

With Taper Angle

Follows a profile 71



Extrude Extrude (create a surface by extruding a profile along a given direction)

If the profile is planar, the direction will be its normal by default. But you can change it to other direction.

72



Revolve Revolve (create a surface by revolving a planar profile about an axis) Remark: The axis must be a straight line.

Sketch.1

Line.1

73



Offset Offset (create a surface, or a set of surfaces, by offsetting an existing surface, or a set of surfaces)

74



Sweep Sweep (create a surface by sweeping out a profile along one or two guide curves) Circular Explicit

Sweeping an Explicit profile - With reference surface (optional) - With two guide curves (optional) - With pulling direction (optional) (We can use the above three options to control the profile orientation)

Conical

Line

Profile

Guide Curve

Sweeping a Linear profile -

Two limits Limit and middle With reference surface With tangency surface With reference curve With two tangency surfaces

We first create a guide curve (4 lines)

- With draft direction 75

Then create a draft surface by sweeping an inclined linear profile along a guide curve



Sweep – Con’t Sweeping a Circular profile -

Three guides Two guides and radius Center and two angles Center and radius Two guides and tangency surface

- One guide and tangency surface

Sweeping a Conical profile -

Two guides Three guides Four guides Five guides

76



Fill Fill (create a surface to fill the opening among a number of boundary segments)

The four points must be tangent-continuous or curvature-continuous

We can specify the desired continuity type between any selected support surfaces and the fill surface (Point, Tangent or Curvature continuous) Passing through a point (optional)

Support Surface Support Surface

77



Multi-sections Surface Multi-sections surface (create a surface by sweeping two or more section curves along an automatically computed or user-defined spine. The surface can be made to respect one or more guide curves. ) Further control pointpoint matching by “manual coupling”

78



Blend Blend (Create a surface between two wireframe elements or surface edges)

79



Join Join (join surfaces or curves as one element)

80

The two original surfaces are hidden; a Join surface is created



Split & Trim Split (split a surface or wireframe element by means of a cutting element. You can split a wireframe element by a point, another wireframe element or a surface; or a surface by a wireframe element or another surface. )

Split Trim

Cutting Element

Result by “Split”

Original

Element to Cut

Trim (trim two or more surface or wireframe elements) 81

Result by “Trim”



Boundary Boundary (create the boundary curve of a surface)

We can select limit points to limit the boundary

82



Extract Extract (extract from elements (curves, points, surfaces or solids)

Only Selected surface Only tangent surfaces are selected

All surfaces are selected

83

For this case, the extracted element must be a curve.



Shape Fillet Bi-tangent Shape Fillet (create a shape fillet between two surfaces)

Smooth: a tangency constraint is imposed at the connection between the fillet surface and the support surfaces, thus smoothing the connection.

Tri-tangent Shape Fillet (create a shape fillet between three surfaces)

84



Edge Fillet Edge Fillet (create a constant radius fillet along the internal edge of a joined surface)

Select the edge of the Join Surface

85



Variable Fillet Variable Fillet (create a variable radius fillet. In this type of fillet, the radius varies at selected points along a selected edge. The fillet surface is obtained by rolling a sphere, which radius would vary, over the selected edge. )

Click the box and select the point

Create a point along the edge before filleting

After entering a new value for this point, we have a different radius here

86



Face-Face Fillet Face-Face fillet (create a face-face fillet. The fillet surface is obtained by rolling a sphere, which radius is larger than the distance between the selected elements, between the selected surfaces. )

Remark: This is a “Joined” Surface

We can add this fillet between two faces that are not touching each other

87



Tri-tangent Fillet Tri-tangent Fillet (The creation of tritangent fillets involves the removal of one of the three faces selected, as the fillet surface is obtained by rolling a sphere, which radius is automatically computed to be larger than the removed surface, between the selected surfaces.)

88



Translate, Rotate, Symmetry, Scale Translate

Rotate Symmetry Rotate Translate

Scale Affinity

Symmetry

Scale

Affinity

89



Extrapolate Extrapolate a surface boundary: Tangent Continuity – this will be a straight edge

Tangent/Curvature

We can join the extrapolated surface with the original surface

Extrapolate a Curve:

Extrapolation with a support

Extrapolation without support

90



Patterns Rectangular pattern

Circular pattern User pattern

Rectangular pattern

First create a sketch with points

Circular pattern

91

User pattern



Connect Checker Connect Checker (analyze how two surfaces are connected ) Distance - minimal distance between two vertices Tangency - angle between two surfaces Curvature Difference (|C2 - C1|) / ((|C1 + C2|) / 2)

Curve Connect Checker (analyze how two curves are connected ) Distance - minimal distance between two vertices Tangency - angle between two curves Curvature Difference (|C2 - C1|) / ((|C1 + C2|) / 2)

92



Draft Analysis Draft Analysis (analyze the draft angle on a surface) (Remark: To view the draft result, we need to use the Shading

1

with Material mode.)

2

STEPS: 1. Click “Feature Draft Analysis 2. Define the color scale (e.g. -1, 0, +1 deg) 3. Click the option “Compass” on the pop-up menu 4. Select all surfaces

93

4

3



Create a New Geometrical Set To CREATE a new geometrical set:- Select “Insert/Geometrical Set…” on the top menu - Click ok

(Remark: Provided that Hybrid Design is disabled, a geometrical set will be created automatically when the first wireframe/ surface/ plane is created)

To MOVE a surface from One Geometrical Set to the other:-Right-click on the surface to access the contextual menu -Select “Change Geometrical Set…” -Select the other geometrical set from the list of Destination 94



Split (by Surface) Remark: The surface-based features (Split, Thick Surface, Close surface & Sew) are available only on Part Design Workbench

Split (split a solid with a plane, face or surface )

95



Thick Surface Thick Surface (add material to a surface in two opposite directions or in one direction)

96



Close Surface Close Surface (Add material inside the enclosed surface so that a solid is created)

97



Sew Surface Sew Surface (a Boolean operation combining a surface with a body. This capability adds or removes material by modifying the surface of the solid.)

98



Exercise Exercise 1 - Sweep/ Extrude/ Offset - Blend/ Split/ Boundary - Fill/ Join

Exercise 2 - Revolve/ Sweep/ Split - Shape Fillet/ Extrude - Symmetry/ Join - Thick Surface 99

CATIA V5 Ge nerative Shape Design


No sharp edges along the boundary

Exercise 1 A

Section A-A A (1) Start/Shape/Generative Shape Design (2) To make a Sweep surface:• • • • • • •

Click “Sketch” icon and select yz plane Draw an arc (R500) with one end (0,0) as shown in Fig.1 Click “Exit” to complete Deselect Sketch.1 Click “Sketch” icon again and select zx plane Draw an arc (R400) with symmetric endpoints as shown in Fig.2 100 Click “Exit” to complete

Fig.1

Fig.2



Exercise 1 (Con’t) • Click “Sweep” icon • Select “Explicit” as Profile Type • Select Sketch.1 as Profile • Select Sketch.2 as Guide Curve • Click ok to complete • Hide Sketch.1 & Sketch.2

(3) To make an Offset Plane:• • • •

Click “Plane” icon Select xy plane as Reference Enter 160mm as Offset (upward) Click ok to complete

(4) To make a sketch on the offset plane:• • •

Click “Sketch” icon and select Plane.1 Draw the Profile as shown in Fig.3 Click “Exit” to complete

101

Fig.3



Exercise 1 (5) To Project the sketch onto the surface:• • • • • •

Click “Projection” icon Select “Along a direction” as Projection type Select Sketch.3 as Projected Select Sweep.1 as Support Select xy plane as Direction Click ok to complete

(6) To Split the surface:• • • • • •

Click “Split” icon Select Sweep.1 as Element to cut Select Project.1 as Cutting element (Click “Other Side” option to choose the outer portion) Click ok to complete Hide Sketch.3 & Project.1

(6b) To Offset the surface:• • • •

Click “Offset” icon Select Sweep.1 as Surface Enter 6mm as Offset (Downward) Click ok to complete

102



Exercise 1 Plane.3

(7) To Create Two offset planes:• • • • • • • •

Click “Plane” icon Select zx plane as Reference Enter 50mm as Offset (positive side) Click ok to complete Click “Plane” icon again Select zx plane as Reference Enter 230mm as Offset (positive side) Click ok to complete

Plane.2

(8) To Split Surfaces:• • • • • • • • • • •

Hide Surface Split.1; Show Surface Sweep.1 Click “Split” icon Select Sweep.1 as Element to cut Select Plane.2 as Cutting element Click “Other Side” option to choose the smaller portion Click ok to complete Click “Split” icon again Select Offset.1 as Element to cut Select Plane.3 as Cutting element Click “Other Side” option to choose the smaller portion Click ok to complete

103

Result of Split.3 Result of Split.2



Exercise 1 (9) To Create a Blend:• • • • • • •

Click “Blend” icon Select the edge of Split.2 as First Curve Select Split.2 as First Support Select the edge of Split.3 as Second Curve Select Split.3 as Second Support Select Tangency for First continuity and Second continuity Click ok to complete

(10) To make a sketch on the offset plane:• • •

Click “Sketch” icon and select Plane.1 Draw the Profile as shown in Fig.4 Click “Exit” to complete

104

Fig.4



Exercise 1 (11) To Project the sketch onto the Blend:• • • • • •

Click “Projection” icon Select “Along a direction” as Projection type Select Sketch.4 as Projected Select Blend.1 as Support Select xy plane as Direction Click ok to complete

(12) To Split the Blend:• • • • • •

Click “Split” icon Select Blend.1 as Element to cut Select Project.2 as Cutting element (Click “Other Side” option to choose the inner portion) Click ok to complete Hide Sketch.4 & Project.2

105



Exercise 1 (13) To Hide all constructive elements:•

Hide all elements except Split.1 & Split.4

(14) To make 4 boundaries:(1st • • • •

Split.4

Boundary) Click “Boundary” icon Select “Tangency continuity” as Propagation type Select the edge as shown in Fig.5 Click ok to complete

(2nd Boundary) • Click “Boundary” icon again • Select “Tangency continuity” as Propagation type • Select the edge as shown in Fig.5 • Click ok to complete

106

1st Boundary

Split.1

2nd Boundary

Fig.5



(3rd Boundary) • Click “Boundary” icon again • Select the edge as shown in Fig.6 • Select the point as Limit 1 • Click ok to complete (4th Boundary) • Click “Boundary” icon again • Select the edge as shown in Fig.6 • Select the point as Limit 1 • Click ok to complete

Exercise 1

4th Boundary

Fig.6

3rd Boundary

(15) To Create a Fill:• • • • •

•

Click “Fill” icon Select Boundary.1 then Split.4 then Tangent Select Boundary.2 then Split.1 then Tangent Select Boundary.3 then Split.1 then Tangent Select Boundary.4 then Split.1 then Tangent Click ok to complete

Split.4 Split.1

107 A51



Exercise 1 (16) To Join surfaces:• • •

Click “Join” icon Select Split.1, Fill.1 & Split.4 Click ok to complete

(17) Hide all Boundaries

Result: No sharp edge between the step-down and the original surface

108

END of Exercise.1



Exercise 2

(1) Start/Shape/Generative Shape Design (2) To make a Revolve surface:• •

• •

Click “Sketch” icon and select zx plane Draw an arc (R160) with one end (0,30) as shown in Fig.1, which should be tangent to a horizontal axis Draw another horizontal axis on x-axis (which will be selected to be the axis of rotation later) Click “Exit” to complete

Fig.1 109



Exercise 2 (con’t) • • • • • • •

Click “Revolve” icon Select Sketch.1 as Profile (Sketch axis will be selected as Revolution axis) Enter 0deg as Angle.1 Enter 180deg as Angle.2 Click ok to complete Hide Sketch.1

(3) To make the 2nd Sketch:• • •

Click “Sketch” icon and select xy Plane Draw an Arc (R90) as shown in Fig.2 Click “Exit” icon to complete

Fig.2 110



Exercise 2 (4) To make reference planes:• • • •

•

Click “Plane” icon select yz Plane then select the end point of the arc (“Parallel through point” will be automatically selected as “Plane Type”) Click ok to complete

• • • •

Click “Plane” icon again select yz Plane then select the end point Click ok to complete

yz plane

of the arc touching Sketch.2

(5) To make the 3rd Sketch:• • • •

Click “Sketch” icon and select Plane.1 Draw an ellipse with one end touching Sketch.2 as shown in Fig.3 (While adding the constraint (D30), rightclick and select “semiminor axis”) Click Exit to complete 111

Fig.3



Exercise 2 (6) To make the 4th Sketch:• • • •

touching Sketch.2

Click “Sketch” icon and select Plane.2 Draw an ellipse with one end touching Sketch.2 as shown in Fig.4 (While adding the constraint (D10), rightclick and select “semiminor axis”) Click Exit to complete

Result

Fig.4

(7) To make a symmetric curve:• • • •

Click “Symmetry” icon Select Sketch.2 as Element select zx Plane as Reference Click ok to complete

Zx plane

112



Exercise 2 (7) To make a Multi-sections Surface:• • • • • • •

Click “Multi-sections Surface” icon Select Sketch.3 as Section#1 Select Sketch.4 as Section#2 Select Sketch.2 as Guide#1 Select Symmetry.1 as Guide#2 Click ok to complete Hide Sketch.2, Sketch.3, Sketch.4, Symmetry.1, Plane.1 & Plane.2

(8) To Split the surface:• • • • •

Click “Split” icon Select Multi-sections Surface.1 as Element to cut Select zx Plane as Cutting element (Click “Other Side” option to choose the correct portion) Click ok to complete 113

Zx Plane



Exercise 2 (9) To make a Fillet between 2 surfaces:• • • • • • • •

Click “Shape Fillet” icon Select Split.1 as Support.1 Select “Trim Support.1” Select Revolute.1 as Support.2 Select “Trim Support.2” Enter 10mm as Radius (Click on the red arrow if it is not pointing outward) Click ok to complete

(10) To make 5th Sketch:• • • •

Click “Sketch” icon and select xy Plane Draw an Arc (R78, center at (0,0)) as shown in Fig.5 (One endpoint must be on x-axis) Circle center at (0,0) Click ok to complete

114

Endpoint on x-axis

Fig5



Exercise 2 (11) To make an Extrude:• • • • • •

Click “Extrude” icon Select Sketch.5 as Profile (The Sketch Plane, xy Plane will be automatically selected as Direction) Enter 20mm as Limit.1 Enter 20mm as Limit.2 Click ok to complete

(12) To Split Surface:• • • • • •

Click “Split” icon Select Fillet.1 as Element to cut Select Extrude.1 as Cutting element (Click “Other Side” option to choose the bigger portion) Click ok to complete Hide Extrude.1 & Sketch.5

115



Exercise 2 (13) To make a Symmetry:• • • •

Click “Symmetry” icon Select Split.2 as Element Select zx Plane as Reference Click ok to complete

(14) To visual-check the tangency continuity along the interface:• • •

Click “Shading” icon (All black surface edges now disappear) Check if any sharp edge appears along the centre interface. If yes, go back to previous step(s) to correct the error.

(15) To Join Surfaces:• • • •

Click “Join” icon Select Split.2 and Symmetry.2 as Elements to Join Click ok to complete (Split.2 & Symmetry.2 will be hidden automatically)

116



Exercise 2 (16) To make a Solid:• • • • • •

• •

Start/Mechanical Design/Part Design Click “Thick Surface” icon Click ok on the pop-up warning window Select Join.1 as Object to Offset Enter 2mm as First Offset (If the red-arrows are not pointing inward, click “Reverse Direction” or directly click on an arrow to change the direction) Click ok to complete Hide Geometrical Set.1

(17) To add Fillets onto the solid:• • • •

Click “Edge Fillet” icon Select all sharp edges Enter 0.5mm as Radius Click ok to complete 117

END of Exercise.2

CATIA V5 Generative Drafting

118 Generative Drafting

CATIA V5 Generative Drafting Version 5 Release 17 Drafting

118


Generative Drafting

Drawing Management To enter the Drafting workbench and start a new drawing:Select File -> New (or click the New

icon).

The New dialog box is displayed, allowing you to choose the type of the document you need. Select Drawing in the List of Types field and click OK. OR Select Start -> Mechanical Design from the menu bar. Select the Drafting workbench. OR Select Start -> Drafting from the menu bar. The New Drawing dialog box is displayed, allowing you choosing the type of Standard, Sheet Style, Orientation you need. The sheet style defines among other things the sheet format, scale and orientation. Select the required standard and click the Landscape or Portrait option.

119


Generative Drafting

Make sure you customized the units accordingly. For this: 1. Select the Tools -> Options command to display the Options dialog box. 2. Click General > Parameters and Measure in the list of objects to the left of the Options dialog box. Select the Units tab and set Length to mm and then click OK.

Save As: Exporting a Drawing CAT Drawing file can save in the following formats: .CATDrawing, .cgm, .svg, .gl2, .ps, .catalog, .pdf, .tif, .jpg, .dxf, .dwg, .ig2 (2D IGES), .3dxml

Importing From Files You can import the following formats: .3dxml, .dwg, .dxf, .cgm, .ps, .hpg, .svg, .pdf 120


Generative Drafting

Sheets Modifying a Sheet & Switching to Another Standard

Deleting a Sheet

Views Creation Projections Front view: Use a reference plane on the 3D part to create a front view. View from 3D: Generate a view and the associated annotations from the 3D. Projection views: Generate the projection views as desired. An auxiliary view: Define a plane that will be used to generate the auxiliary view. Isomeric view: Create an isometric view using a 3D part. Advanced front view: Create advanced front views to configure such elements as the view name, view scale, etc.

121


Generative Drafting

Sections Offset section view: Use a cutting profile to define and position the offset section view. Aligned section view: Use a cutting profile to define and position the aligned section view. Offset section cut: Use a cutting profile to define and position the offset section cut. Aligned section cut: Use a cutting profile to define and position the aligned section cut.

Detail view Detail view: Use a callout to create a detail view via a boolean operator from the 3D. Detail view profile: Use a polygon to create a detail view via a boolean operator from the 3D. Quick detail view:

Callout to create a detail view by computing the view directly from 2D projection.

Quick detail view profile: Polygon to create a detail view by computing the view from 2D projection.

Clipping view Clipping view: Callout to create a clipping view via a boolean operator from the 3D. Clipping view profile: Callout to create a clipping view by computing the view directly from 2D projection.

Quick clipping view: Create a quick clipping view with a circle as callout. Quick clipping view profile: Create a quick clipping view with a sketched profile as callout.

122


Generative Drafting

Break views Broken view: Create a broken view from an active and up to date generative view using two profiles corresponding to the part to be broken from the view extremities Breakout view: Remove locally material from a left generated view, to visualize the remaining visible internal part.

3D clipping: Clip a view by selecting in the 3D object the useful part.

View Modification Move a view: Drag a view to a new location. Position a view: Position Generative or Interactive views either by aligning them, superposing them and setting relative view position.

Position a view independently of its reference view: Position a view independently of its reference view. Locate reference/resulting views: Navigate easily between reference/resulting views in the case of section views, section cuts, auxiliary views or detail views.

Isolate generated views: Remove associativity between an existing CATPart (or CATProduct or CATModel) and the corresponding generated views.

Restore Overloaded Properties/Deleted elements: Restore 3D graphical dress-up and/or generated elements that have been deleted from a view.

Lock a view: Use the contextual menu (Properties option) to lock a view. Scale a view: Modify the scale of a view. Rename a view: Give a new name to an existing view. Modify a view projection plane: Modify the projection plane of any generated view. Add a generative bill of material: Insert Bill of Material information into the active view. Generating balloons on a view: Generate balloons on the active view. Show geometry in views: Visualize geometrical elements in all viewpoints as well as in a 3D viewer corresponding to the views analyzed.

123

Generative Drafting


Modify a callout graphism: Modify the graphical attributes of one or more callout used when generating auxiliary, section or detail views.

Modify a callout geometry: Modify the geometrical properties of a callout used when creating detail views, section views and section cuts.

Overloading element properties: Overload the properties of generated elements in a view. Modify a pattern: Modify the pattern of a view and apply a material to this pattern. Duplicating generative geometry: Duplicate a generative view sub-element in order to modify a generated view subpart independently from the part linked to the drawing.

Modify a view's links: Modify the list elements pointed by a view. Apply a view's links to another view: Apply the links of a view to another one.

Generative View Styles Create views using generative view styles. Switch a view to another generative view style: Switch a view which uses a given generative view style to another style.

Apply the generative style of a view to another view: Apply the generative view style used to create a given view to another view.

Apply a generative view style to a view: Apply a generative view style to a view which was created without one.

Dimension Generation Generate dimensions in one shot: Generate dimensions in one shot from the constraints of a 3D part (distance, length, angle, radius and diameter constraints). Generate dimensions semi-automatically: Generate dimensions step by step from the constraints of a 3D part (distance, length, angle, radius and diameter constraints).

124


Generative Drafting

Dimension Manipulation Dimensions/ half-dimensions: Create dimensions by clicking elements. Chained dimension: Cumulated dimension system on a view Stacked dimension system on a view

Explicit dimensions: Create dimensions using explicit selection both of the desired icon and of the required geometrical elements.

Chamfer dimensions: Create a chamfer dimension using selection. Associative thread dimensions: Create associative thread dimensions. Coordinate dimensions: Automatically create coordinate dimensions on elements. Holes dimensions table: Create a table containing holes dimensions (diameter and center coordinates). Points coordinates table: Create a table containing 2D and

3D points coordinates.

Dimension edition Re-route dimensions: i.e. recalculate dimensions taking into account new geometry elements. Interrupt one or more extension lines: Interrupt manually one or more extension lines of one or more dimensions.

125


Generative Drafting

The options in the Tools Palette allow you to position the dimension using one of the above indicated modes.

Tolerance Datum feature: Use the Datum Feature Creation dialog box to create a datum feature. Geometrical tolerance: Use the Geometric Dimensioning and Tolerancing Parameters dialog box to create geometrical tolerances.

Annotations Text Free text: Create a text that either wraps or not, that is assigned an unlimited width text frame, even though this text may reach the frame boundary Text with a leader: Create a text with a leader either in the free space or associated

Text to be replicated Create a balloon: Create a balloon using a dialog box. Create a datum target: Create a datum target on a view.

Symbols Roughness symbol: Create a roughness using a dialog box. Welding symbol: Create a welding symbol using a dialog box.

Geometry weld: Create a geometry weld symbol.

126

Generative Drafting


Table Create/modify a table: Create, edit and modify a table. Insert table from the file

Dress-Up Elements

Arrows: Create an arrow.

Axis & threads Center lines (no reference): Apply a center line to one or more circles.

Center lines (reference): Apply a center line to one or more circles with respect to a reference (linear or circular). Threads (no reference): Create a thread without a reference. Threads (reference): Create a thread with a reference, either circular (circle or point) or linear (line). Axis lines: Create an axis line by selecting lines.

Axis lines and center lines: Create an axis line by selecting lines.

Fill areas Area-fill: Create an area fill, i.e. a closed area on which you will then apply graphical dress-up elements called patterns (these can be hatching, dotting or coloring). Patterns can be applied to area fills created from both sketched and generated elements.

127

Generative Drafting


Properties Edit sheet properties: Access and edit sheet properties. Editing view properties: Access and edit view properties. Editing 2D geometry feature properties: Access and edit information on 2D geometry features (name and stamp). Editing 2D element graphic properties: Access and edit graphic properties. Edit pattern properties: Access and edit pattern properties. Editing annotation font properties: Access and edit annotation font properties. Editing text properties: Access and modify text color, position and/or orientation. Editing picture properties: Access and modify picture position, size, scale and compression. Editing dimension text properties: Access and edit dimension text properties. Edit dimension font properties: Access and edit dimension font properties. Editing dimension value properties: Access and edit dimension value properties. Editing dimension tolerance properties: Access and edit dimension tolerance properties. Editing dimension extension line properties: Access and edit dimension extension line properties. Editing dimension line properties: Access and edit information on dimension line properties. Editing dimension system properties: Access and edit information on dimension system properties. Editing 2D component instance properties: Access and edit 2D component instance properties. Editing callout properties: Access and edit the callout properties.

128

Generative Drafting


Printing

129

Catia Tutorial

Recommend Documents