Centurion

UNIVERSITY OF TECHNOLOGY AND MANAGEMENT

CATIA
PRACTICAL EXERCISES BOOK

Name of the student: __________________________________________

Registration no: _______________________________________________

 WHY CATIA?
CATIA (Computer Aided Three-dimensional Interactive Application) is a multi-platform CAD/CAM/CAE
commercial software suite developed by the French company Dassault Systèmes directed by Bernard Charlès.
Written in the C++ programming language, CATIA is the cornerstone of the Dassault Systèmes software suite.

Scope of application

Commonly referred to as a 3D Product Lifecycle Management software suite, CATIA supports multiple stages
of product development (CAx), including conceptualization, design (CAD), engineering (CAE) and manufacturing
(CAM). CATIA facilitates collaborative engineering across disciplines around its 3DEXPERIENCE platform, including
surfacing & shape design, electrical fluid & electronics systems design, mechanical engineering and systems
engineering.

CATIA facilitates the design of electronic, electrical, and distributed systems such as fluid and HVAC systems,
all the way to the production of documentation for manufacturing.

CATIA enables the creation of 3D parts, from 3D sketches, sheetmetal, composites, molded, forged or tooling
parts up to the definition of mechanical assemblies. The software provides advanced technologies for mechanical
surfacing & BIW. It provides tools to complete product definition, including functional tolerances as well as
kinematics definition. CATIA provides a wide range of applications for tooling design, for both generic tooling and
mold & die.

CATIA offers a solution to shape design, styling, surfacing workflow and visualization to create, modify, and
validate complex innovative shapes from industrial design to Class-A surfacing with the ICEM surfacing technologies.
CATIA supports multiple stages of product design whether started from scratch or from 2D sketches. CATIA is able to
read and produce STEP format files for reverse engineering and surface reuse.

CATIA can be applied to a wide variety of industries, from aerospace and defense, automotive, and industrial
equipment, to high tech, shipbuilding, consumer goods, plant design, consumer packaged goods, life sciences,
architecture and construction, process power and petroleum, and services.

Many automotive companies use CATIA to varying degrees, including BMW, Porsche, Daimler AG, McLaren
Automotive, Chrysler, Honda, Audi, Jaguar Land Rover, Volkswagen, SEAT, Škoda, Bentley Motors Limited, Volvo, Fiat,
Benteler International, PSA Peugeot Citroën, Renault, Toyota, Ford, Scania, Hyundai, Tesla Motors, Rolls-Royce
Motors, Valmet Automotive, Proton, Elba, Tata motors and Mahindra & Mahindra Limited. Goodyear uses it in
making tires for automotive and aerospace and also uses a customized CATIA for its design and development.

Dassault Systèmes has begun serving shipbuilders with CATIA V5 release 8, which includes special features useful to
shipbuilders. GD Electric Boat used CATIA to design the latest fast attack submarine class for the United States Navy,
the Virginia class.
 Objective of the course

At the end of Session, participants are able to learn:

 Advanced solutions for conceptual design, 3D modeling, and documentation.

 To do product design, industrial design and styling 3D Surface Model,
 To perform Assembly design & template based design ,
 To Create Kinematics with visual analysis and validation which will give you high quality performance
insights for product decisions.
 To perform Manufacturing and generating of different views from a 3D model.

METHODOLOGY
This course provides the solid fundamentals of the CAD tool to prepare the student for more specific and
advanced functions. Each module will introduce new material that will prepare the student for the projects to
be completed.

Lectures

Each detailed subject will be presented in a lecture format outlining the theory and standardized accepted
methodology. A PPT file of the lecture material will be provided for the student’s personal use as reference
material. Lecture note outlines will be distributed to the students for each lecture to help the student capture
personal notes.

Specific Industry Examples

Real life industry examples will be covered that detail out the application of the theory to demonstrate how
different companies apply these tools and techniques. This will give the students a clear understanding of how
and why these techniques are utilized at different companies and industries in different manners.

In-Class Assignments

Using the theory and industry examples the student will conduct several projects that outline each key principal
on in-class projects. These projects will increase in complexity as the students further develop their skills in
applying these tools and techniques.
 COURSE OUTLINE AND ASSIGNMENTS

Module 1: Introduction to Catia V5

Workbenches Discussion
Toolbars Discussion
Specification Tree Discussion
Compass Discussion
Mouse Usage Discussion
File Operations Discussion

Module 2: Drawing Sketches in the Sketcher Workbench-I

Invoking the Sketcher Workbench Discussion

Units, Grid Settings Discussion
Construction and Standard elements Discussion
Drawing Sketch objects I Discussion
Inferred Constraints Discussion
Exiting the Sketcher Workbench Discussion
View Manipulation Discussion
Tutorials Assignment

Module 3: Drawing Sketches in the Sketcher Workbench-II

Drawing Sketch Objects II Discussion

Modifying sketch Objects Discussion
Sketch Transformations Discussion
Tutorials , Exercise Assignment

Module 4: Constraining Sketches and Creating Base Features

Constraining Sketches Discussion

Geometric Constraints Discussion
Dimensional Constraints Discussion
Sketch Analysis Discussion
Creating an Extruded Solid Using the Pad Feature Discussion
Creating a Revolved Solid Using the Shaft Feature Discussion
Assigning a Material to the Model Discussion
Exercises Assignment
Module 5: Reference Elements and Sketch-Based Features

Reference Elements Discussion

Drafted Filleted Pad Features Discussion
Multi-Pad Features Discussion
Pocket Features Discussion
Drafted Filleted Pocket Discussion
Multi-Pocket Features Discussion
Groove Discussion
Extruding and Revolving Faces Discussion
Projecting 3D Elements Discussion
Tutorial Assignment
Module 6: Creating Dress-Up and Hole Features
Hole features Discussion
Chamfer Discussion Discussion
Fillets Discussion Discussion
Draft Discussion Discussion
Shell Discussion Discussion
Exercise Assignment
Module 7: Editing Features

Editing Features Discussion

Cut, Copy and Paste Discussion Discussion
Deleting Features Discussion Discussion
Deactivating Features Discussion
Defining the Work Object Discussion
Reordering Features Discussion
Parent Child Relationships Discussion
Update Diagnostics Discussion
Measuring Elements Discussion
Exercise Assignment
Module 8: Transformation Features and Advanced Modeling Tools-I

Translating and Rotating Bodies Discussion

Symmetry and Mirror Features Discussion
Patterns Discussion
Scale Discussion
Parts with Multiple Bodies Discussion
Boolean Operations Discussion
Stiffener Features Discussion
Exercise Assignment
Module 9: Advanced Modeling Tools-II

Rib Discussion
Slot Discussion Discussion
Multi-section Solids Discussion Discussion
Power copy Discussion Discussion
Exercise Assignment
Module 10: Assemble Design tools

Assemble work bench Discussion

Assemble constraints Discussion
Top down and Bottom up Assemblies. Discussion
Assembly constraints Discussion
Activating & Deactivating constraints Discussion
Manage Representations and creating copies of
components. Discussion
Exercise Assignment
Module 11: Generating of different views from a 3D model.

Generating drawings from existing components Discussion

Standard views Discussion
Projection views Discussion
Detail views Discussion
Unfolded views and about view wizad Discussion
Bilateral Associativity Discussion
Automatic Generating Dimensions and modification of
dimensions creating different symbols Discussion
Bill of materials of assemblies. Discussion
Exercise Assignment
Module 12: Wireframe and Surface Design

Surfacing Workbenches Discussion

Wireframe geometry Discussion
Extruded Surfaces Discussion
Revolved Surfaces Discussion
Offset Surfaces Discussion
Swept Surfaces Discussion
Fill Surface Discussion
Multi-section Surfaces Discussion
Blended Surfaces Discussion
Split, Trim and Join Discussion
Exercise Assignment
Module 13: Creating Kinematics

Creating different types of joints :

revolute joint , Discussion
Prismatic joint, Discussion
Cylinderical joint, Discussion
Spherical joint, Discussion
Planer Joint, Discussion
Rigid Joint, Discussion
Creating Simulations,Replaying Simulations,Analyzing Discussion
Joints,
Exercise
Assignment
Module 14: Importing & Exporting

Introduction to Neutral Files & Converters, Discussion with experiments

Different types of Converts and Exporting and Importing
Diagnosis Exporting CATIA Model to other Software
through IGES and other neutral Files and Importing
model files from Software to CATIA.
Constraints Exercise
Constraint Exercise
Solid Modeling Exercise
Project Assignment Exercise
 Project Assignment-1
Flexible Couplings
These are the standard forms of couplings, most extensively used. In a flanged coupling, flanges are either fitted or
provided at the ends of shafts. The flanges are fastened together by means of a number of bolts and nuts. The number and size of
the bolts depend upon the power to be transmitted and hence, the shaft diameter.
Flange coupling with detachable flanges
In this, two flanges are keyed, one at the end of each shaft, by means of sunk keys. For ensuring correct alignment, a cylindrical
projection may be provided on one flange which fits into the corresponding recess in the other. In the design shown in figure, the
bolt heads and nuts are exposed and liable to cause injury to the workman. Hence, as a protection, the bolt heads and nuts may be
covered by providing an annular projection on each flange. A flanged coupling, using these flanges is called a protected flanged
coupling.
 Project Assignment-2
Oldham Coupling
It is used to connect two parallel shafts whose axes are at a small distance apart. Two flanges, each having a rectangular
slot, are keyed, one on each shaft. The two flanges are positioned such that, the slot in one is at right angle to the slot in the other.
To make the coupling, a circular disc with two rectangular projections on either side and at right angle to each other, is placed
between the two flanges. During motion, the central disc, while turning, slides in the slots of the flanges. Power transmission takes
place between the shafts, because of the positive connection between the flanges and the central disc.
 Project Assignment-3
Universal Coupling (Hooks Joint)
It is a rigid coupling that connects two shafts, whose axes intersect if extended. It consists of two forks which are keyed to
the shafts. The two forks are pin joined to a central block, which has two arms at right angle to each other in the form of a cross.
The angle between the shafts may be varied even while the shafts are rotating.
 Project Assignment-4
Foot Step Bearing
This consists of two bearings, one in the form of a disc and the other in the form of a bush. It is intended to support a
vertical shaft under axial load. The axial load is resisted by the disc shaped bearing provided at the bottom of the shaft, whereas the
bush bearing resists radial load on the shaft. The disc 3 is located in the body 1 after placing the pin 5 in the corresponding hole in
the body. This prevents the rotation of the disc, due to rotation of the vertical shaft. Bush 2 is now placed in the body such that, the
snug on the bush rests in the recess provided in the body. This assembly is now ready to support the vertical shaft 4. Figure shows
the assembly drawing.
 Project Assignment-5
Crane Hook
The bush 6 is placed in the hook anchor 3 which in-turn is placed on the crane hook 1. The lock-nut 9 is used to lock this
assembly in position and a pin is used to lock the nut. The bush facilitates free rotation of the crane hook in the hook anchor. The
end bushes 4 are placed on the outside of the support plates 2 and fitted with the bolts and nuts 11. The support plate assembly is
placed on either side of the above crane hook assembly and the three plate spacers 5 are also used to maintain the distance between
the support plates and fixed in position by means of the lock-nuts 7 and 8. The washers 10 are used for clamping the plate spacers
with lock-nuts.
 Project Assignment-6
Piston Assembly
A piston is cylindrical in form and reciprocates in a cylinder. The petrol engine piston is generally die cast in aluminium
alloy. It is connected to the small end of the connecting rod by means of a gudgeon pin. Figure shows the details of the petrol
engine piston assembly.
 Project Assignment-7
Radial Engine Sub-Assembly
Radial engines are mainly used for aircraft applications and are air-cooled type. The radial engine employs a master
connecting rod to which other connecting (articulated) rods are attached radially. The radial engine sub-assembly of a five cylinder
engine. The articulated rods 2 are connected to the master rod 1 by means of rod bush 6, and link pins 7. Aluminium pistons 3 are
assembled with master and articulated rods using bushes 5, piston pins 8 and piston pin plugs 9. Five piston rings 10 are provided
per piston. The bearing 4 is used at the big end of the master rod; the end of which is connected to the crank pin of the crankshaft.
 Project Assignment-8
Eccentric Assembly
It is used to provide a short reciprocating motion, actuated by the rotation of a shaft. Eccentrics are used for operating
steam valves, small pump plungers, shaking screens, etc. The components of an eccentric are shown in isometric views for easy
understanding of their shapes.
Rotary motion can be converted into a reciprocating motion with an eccentric, but the reverse conversion is not possible
due to excessive friction between the sheave and the strap. The crank arrangement, in a slider crank mechanism however, allows
conversion in either direction. The sheave 2 which is in the form of a circular disc with a stepped rim is keyed on the shaft. When
the shaft rotates, the sheave rotates eccentrically because of the eccentrically placed hole in it and imparts reciprocating motion
to eccentric rod 6. The straps 1 are semi-circular elements with an annular recess to accommodate the stepped rim of the sheave.
These are held together on the sheave by means of strap bolts 4, with packing strips 3 placed between them. The eccentric rod is
fixed to the eccentric strap by means of the studs and nuts 5.
 Project Assignment-9
Lathe tail-stock
It is a part of a lathe machine and is used to support lengthy jobs. To accommodate works of different lengths between
centres, the tail-stock may be moved on the lathe bed to the required position and clamped by means of a clamping bolt.
The barrel 2 is fitted into the bore of the tail-stock body 1 and is prevented from rotation by the feather key 9 placed
underneath of it. The barrel has a threaded portion at its end and the spindle 3 is inserted into the barrel through this. The hand
wheel 6 is mounted on the spindle by a key and is retained in position by a nut. The spindle bearing 5 is placed between the hand
wheel and the tail-stock body. A tapered hole provided at the front end of the barrel, receives the dead centre 4 or a tapered shank
of the drill or reamer. When the hand wheel is operated, the barrel is made to move in or out of the tail-stock body. In the required
position of the barrel, clamping may be made by means of the clamping lever 7 and stud 8 which is fitted to the tail-stock body.
The spindle bearing is fixed to the body by means of the screws 10.
 Project Assignment-10
Milling Machine Tail-stock
Jobs requiring milling operations in relation to their axes of rotation are usually supported between the centers of the
dividing head and adjustable centre provided in the tail-stock.
The parts of a milling machine tail-stock are shown in Fig. This is similar to the lathe tailstock. The screw 4 is introduced
into the threaded hole of body 1. Centre 2 is inserted into the body such that, the hole provided in it enters onto the screw 4. Hand
wheel 3 is mounted on the screw 4, by using the key 8 and fixed in position by using washer 6 and nut 7. By operating the hand
wheel, the centre can be given the required movement/fine adjustment, while clamping the job between the centers. After
adjustment, the centre can be locked by the screw 5, which is introduced into the body, prior to the location of the centre in the
body.
 Project Assignment-10
Revolving Center
When long bars are machined on a lathe, they are supported on two centers. One of which is called a live centre and the
other, a dead centre, fixed in the tail-stock. The live centre fits into the main spindle and revolves with the work it supports.
Because of the relative motion between the work piece and the dead centre in the tail-stock barrel, over-heating and wear of the
centre takes place in the long run. To eliminate this, the dead centre is replaced with a live or anti-friction bearing centre, which
revolves with the work like a live centre.
Figure shows the details of a revolving centre using antifriction bearings. The radial bearing 6 and thrust bearing 7 used in
the design are meant for resisting the possible radial and axial loads respectively. The sleeve 4 is press fitted in the barrel 1 to
provide end support to the centre 3. The sleeve is positioned in the barrel by the cover 5. Another cover 2 is fixed on the front side
of the barrel by means of the screws 8 to retain the radial bearing in position.
 Project Assignment-11
Feed check valve
It is used in boilers to regulate the supply of feed water and to maintain the water level. It is fitted close to the boiler shell
and in the feed pipe line. The valve prevents water from being returned to the supply line, due to steam pressure in the boiler.
Hence, it functions like a non-return valve. It consists of a body with two flanges at right angle and feed water enters at the bottom
and enters the boiler through the side opening.
The valve seat 5 is introduced into the body of the valve from the top opening. The valve 4 is located in the valve seat,
which guides the movement of the valve. The spindle 3 is screwed from bottom of the cover 2 such that, the square end of the
spindle projects out through the cover. Studs 8 are screwed to the body and the spindle and cover assembly is fastened to the body
by nuts 10. Studs 9 are screwed to the cover and the gland 6 is inserted into the cover and tightened by nuts 11. To prevent the
leakage of water through the cover, packing material is introduced between the cover and gland. Hand wheel 7 is located on the
spindle such that, the square hole in the hand wheel meshes with the square portion of spindle. The hand wheel is fixed to the
spindle by nut 11. By operating the hand wheel, the spindle permits the valve to get lifted from the valve seat and allows feed
water to enter the boiler.
 Project Assignment-12
Leaver Safety Valve
Safety valves are used to release some of the steam from the boiler when the pressure rises higher than the safe limit.
In a lever safety valve, a load is applied through a lever, by placing a suitable weight at some distance from the centre line of the
valve to counter-balance the steam pressure in the boiler. The distance can be adjusted by moving the weight along the lever for
adjusting the blowing-off pressure. The lever safety valves are suitable for stationery boilers.
The details of a simple lever safety valve are shown in Fig. In this, valve seat 2 is screwed in the valve body 1. The
spindle 6 and toggle 7 together keeps the valve 3 pressed against the seat. The top of the valve body is closed with a cover 4 with
the help of six studs 14. A cover bush 5 is used to prevent the leakage through the central hole of the cover. A lever guide 9 is
screwed to the cover in order to restrict the lever movement. The weight 12 is attached to the lever 10 by means of lever pin 13.
The toggle is held in position by means of toggle pin 8. Fulcrum pin 11 is used to connect the lever and the cover, to act as the
fulcrum.
 Project Assignment-13
Screw Jack
Screw jacks are used for raising heavy loads through very small heights. Figure shows the details of one type of screw
jack. In this, the screw 3 works in the nut 2 which is press fitted into the main body 1. The tommy bar 7 is inserted into a hole
through the enlarged head of the screw and when this is turned, the screw will move up or down, thereby raising or lowering the
load.
 Project Assignment-14
Plummer Block
This bearing is used for long shafts, requiring intermediate support, especially when the shaft cannot be introduced into
the bearing, end-wise.
The bottom half 2 of the bearing brass is placed in the base 1 such that, the snug of the bearing enters into the
corresponding recess in the base; preventing rotation of the brasses. After placing the journal (shaft) on the bottom half of the
bearing brass, kept in the base; the upper half of the bearing brass 3 is placed and the cap 4 is then fixed to the base, by means of
two bolts with nuts 5. The bearing is made of two halves so that the support can be introduced at any location of the long shaft.
 Project Assignment-15
Knuckle Joint
A knuckle joint is a pin joint used to fasten two circular rods. In this joint, one end of the rod is formed into an eye and
the other into a fork (double eye). For making the joint, the eye end of the rod is aligned into the fork end of the other and then the
pin is inserted through the holes and held in position by means of a collar and a taper pin. Once the joint is made, the rods are free
to swivel about the cylindrical pin. Knuckle joints are used in suspension links, air brake arrangement of locomotives, etc.
Notes
Notes
Notes