CHAPTER 1: ABOUT THE ORGANIZATION

1.1 GOVERNMENT TOOL ROOM & TRAINING CENTRE (GTTC HARIHARA)

GTTC was established in 1972 at Bangalore with the participation of the Karnataka State
Government, in collaboration with the Government of Denmark under the Bilateral Development Co-
operation Agreement. The excellent performance of GTTC Bangalore, proactive Government of
Karnataka which saw the need for expansion, got second unit of GTTC started in 1992 with DANIDA
assistance. Proliferation of technology for development of the industries with supply of skilled
manpower is the key to meet the needs of the global requirement. With this Government of Karnataka
encouraged GTTC to start 10 more sub-centers to train in the area of tool and die making in various parts
of Karnataka. GTTC is an autonomous society, and a recognized Scientific and Research Organization
by the Government of India. Govt. Tool Room and Training Centre (GTTC), is serving industry by way
of precision tooling and providing in well trained craftsmen the area of tool and die making. Today, the
GTTC have acquired mastery in mould and die making technology and have blossomed into an epitome
of precision and quality in the development and manufacture of sophisticated moulds, dies and tools.
Fully aware of the rapid advancement in technology the world over, the GTTC is periodically adding
new technologies to the existing set of advanced equipment like CAD / CAM, CNC machines for tooling,
Precision Components, Laser for Industries, Rapid prototyping, vacuum casting etc. GTTC is
concentrating on the Integrated Development of the related segments of industries by way of providing
international quality tools, trained personnel and consultancy in tooling and related areas. In future, the
focus would be more on turnkey projects in Tooling, Aerospace components & their assemblies, and
also to support the development of small and medium scale enterprises.

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 Fig 1.1 : Government Tool Room & Training Center

CHAPTER 2: ABOUT THE DEPARTMENT

2.1 BRIEF HISTORY OF CAD/CAM DEVELOPMENT

The roots of current CAD/CAM technologies go back to the beginning of civilization when
engineers in ancient Egypt recognized graphics communication. Orthographic projection practiced today
was invented around the 1800s. The real development of CAD/CAM systems started in the 1950s.
CAD/CAM went through four major phases of development in the last century. The 1950s was known
as the era of interactive computer graphics. MIT’s Servo Mechanisms Laboratory demonstrated the
concept of numerical control (NC) on a three-axis milling machine. Development in this era was slowed
down by the shortcomings of computers at the time. During the late 1950 the development of
Automatically Programmed Tools (APT) began and General Motors explored the potential of interactive
graphics. The 1960s was the most critical research period for interactive computer graphics. Ivan
Sutherland developed a sketchpad system, which demonstrated the possibility of creating drawings and
altercations of objects interactively on a cathode ray tube (CRT). The term CAD started to appear with
the word ‘design’ extending beyond basic drafting concepts. General Motors announced their DAC-1
system and Bell Technologies introduced the GRAPHIC 1remote display system. During the 1970s, the
research efforts of the previous decade in computer graphics had begun to be fruitful, and potential of
interactive computer graphics in improving productivity was realized by industry, government and
academia. The 1970s is characterized as the golden era for computer drafting and the beginning of ad
hoc instrumental design applications. National Computer Graphics Association (NCGA) was formed
and Initial Graphics Exchange Specification (IGES) was initiated. In the 1980s, new theories and
algorithms evolved and integration of various elements of design and manufacturing was developed. The
major research and development focus was to expand CAD/CAM systems beyond three-dimensional
geometric designs and provide more engineering applications. The present day CAD/CAM development
focuses on efficient and fast integration and automation of various elements of design and manufacturing
along with the development of new algorithms. There are many commercial CAD/CAM packages
available for direct usages that are user-friendly and very proficient. Below are some of the commercial
packages in the present market. Solid Edge, AutoCAD and
Mechanical Desktop are some low-end CAD software systems, which are mainly used for 2D
modeling and drawing.
2.2 INTRODUCTION TO CREO

Creo for design is the basic course offered in Product Design and Development laboratory. In Creo
for design, you will be learning all the basics of modelling which are essential for anyone in the field of
design or who are passionate towards design field.You will be learning 4 modules - Sketch, Part (Solid
and Sheet metal), Assembly and Drafting.
Students will have an opportunity to learn best way to model an idea in virtual environment so that
it can be modified easily when required, which is essential in design industry point of view.

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HARDWARE / SOFTWARE PACKAGES:
Creo parametric 9.0.0.0

Fig 2.1 : Product design of drilling machine

Fig 2.2: Design of 3D parts

Creo is a family or suite of Computer-aided design (CAD) apps supporting product designfor
discrete manufacturers and is developed by PTC. The suite consists of apps, each delivering a distinct
set of capabilities for a user role within product development. The parametric versionof Creo deals with
creating and modifying 3D models, while the model check version is for comprehensive and
collaborative analysis tool for users to check their models. Creo sketch is used to turn ideas into 2D
sketches and Creo Element is used to combine 2D and 3D parts in a lightweight easy to learn software.

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2.3 DESIGN CYCLE

The product realization process can be roughly divided into two phases; design and manufacturing.
The design process starts with identification of new customer needs and design variables to be improved,
which are identified by the marketing personnel after getting feedback from the customers. Once the
relevant design information is gathered, design specifications are formulated. A feasibility study is
conducted with relevant design information and detailed design and analyses are performed. The detailed
design includes design conceptualization, prospective product drawings, sketches and geometric
modeling. Analysis includes stress analysis, interference checking, kinematics analysis, mass property
calculations and tolerance analysis, and design optimization. The quality of the results obtained from
these activities is directly related to the quality of the analysis and the tools used for conducting the
analysis.

Fig 2.3: Design cycle

2.4 IMPORTANCE OF 3D MODELLING

CAD is technology concerned with using computer systems to assist in the creation, modification,
analysis, and optimization of a design. Any computer program that embodies computer graphics and an
application program facilitating engineering functions in design process can be classified as CAD
software.

2.5 SOLID MODELLING CONCEPT

Solid modeling (or modelling) is a consistent set of principles for mathematical and computer modeling
of three-dimensional solids. Solid modeling is distinguished from related areas of geometric modeling
and computer graphics, such as 3D modeling, by its emphasis on physical fidelity. Together, the
principles of geometric and solid modeling form the foundation of 3D-computer-aided design and in
general support the creation, exchange, visualization, animation, interrogation, and annotation of digital
models of physical objects.

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The use of solid modelling techniques allows for the automation of several difficult engineering
calculations that are carried out as a part of the design process. Simulation, planning, and verification of
processes such as machining and assembly were one of the main catalysts for the development of solid
modelling. More recently, the range of supported manufacturing applications has been greatly expanded
to include sheet metal manufacturing, injection moulding, welding, pipe routing, etc.

2.6 FEATURE BASED MODELLING

Feature-based modelling refers to the construction of geometries as a combination of form features.

The designer specifies features in engineering terms such as holes, slots, or bosses rather than geometric
terms such as circles or boxes.

2.7 INTRODUCTION TO PTC

PTC Inc. (formerly Parametric Technology Corporation) is an American computer software and
services company founded in 1985 and headquartered in Boston, Massachusetts. The global technology
company has over 6,000 employees across 80 offices in 30 countries, 1,150 technology partners. The
company began developing parametric, associative feature- based, solid computer-aided design (CAD)
modeling software in 1988, including an Internet- based product for product lifecycle management
(PLM) in 1998. PTC products and services include Internet of things (IoT), augmented reality (AR), and
collaboration software.

2.8 LAUNCHING CREO

Launch Creo by LMB double-clicking on the shortcut Creo Parametric icon in the PC desktop.
Another way to launch the software is to press on the Windows Start icon, and then to activate Creo
Parametric from the PTC applications list.
2.1.1 User Interface after launching Creo:
The initial screen after starting the software is shown in Figure. It consists of File and Home ribbon menu
options, Folder Browser tab, and Favorites tab to run a Web browser.

Fig 2.4 : User interface

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 The main areas and functions of this interface are as follows:

• The Folder Browser tab located on the left of the screen next to the Model Tree tab, lists the folders on
the computer or network. Browse the folders and view their contents in the Folder Browser.
• The Favorites tab is a multi-functional Web browser embedded in Creo. It displays models and tutorials
from PTC.com and other websites.
• A preview window appears in the Centre of the screen after the launch.
• The Folder Browser icons are located at the bottom left corner of the main window.
Click (LMB) on the icons to either show or hide the current folder and Web browsers.

2.1.2 User Interface of sketcher:

Fig 2.6 : Sketch user interface

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 Fig 2.7 : Sketching toolbar

Fig 2.8 : Ellipse, Chamfer, Fillet & Spline

Fig 2.9 : Dimension constraints

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 Fig 2.10 : Geometrical constraints

2.8.3User interface of Part Modeling

The ribbon contains command buttons organized within a set of tabs. On each tab, the related buttons
are grouped.
The Quick Access toolbar is located at the top of the Creo Parametric window. It provides quick access
to frequently used buttons, such as buttons for opening and saving files, undo, redo, regenerate, close
windows, switch windows, and so on. The navigator includes the Model Tree, Layer Tree, Detail
Tree, Folder browser, and

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 Favourites. The model is displayed in the graphics window to the right of the navigator. The in-
graphics toolbar is embedded at the top of the graphics window.

Fig 2.11 : Part modeling

The buttons on the toolbar control the display of graphics. A status bar located at the bottom of the Creo
Parametric window provides options to control the display of the navigator and browser. It alsodisplays
information on the status of the operation.
1. Tab
2. Group
3. In-graphics toolbar
4. Graphics window
5. Selection filter
6. Status Bar
7. Model Tree
8. Ribbon
9. Quick Access

Navigator: Folder Browser

The Folder Browser is an expandable tree that lets you browse the file systems and other locations
accessible from your computer.

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 Fig 2.12: Folder Browser

2.9 COMMON FOLDERS

This section consists of top-level nodes for accessing file systems.

You can access the commonly-used locations.

2.2.1 Folder Tree:

This section consists of a hierarchical structure of the local file system.
2.2.2 Zoom:
Middle Scroll Wheel or Ctrl+ hold Middle Scroll Wheel up and down.

2.10 Saving

Fig 2.13: Saving

Fig 2.14 : Sketching Tools

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 .11 SKETCHING TOOLS

DESCRIPTION:

1. Click Sketch and then click the arrow next to Ellipse. Click Center and Axis Ellipse. Select a point for
the center of the ellipse. The first axis is created. Move the axis to the desired length and orientation and
select an endpoint. The second axis and the ellipse circumference are created. Move the pointer
to define the length of the second axis and select an endpoint. The ellipse is created.

Fig 2.15: Sketching Tools

2. Click Sketch and then click the arrow next to Ellipse. Click Axis Ends Ellipse.

Select a Location for the first axis endpoint. The axis is created. Move the axis to the desired length and
orientation and select the second endpoint. Drag the pointer to define the length of the second axis and
select an endpoint. The ellipse is created.
3. Click Sketch > Spline. Select a point for the spline endpoint. Select additional spline points and middle-
click to exit the tool. The spline is created.
4. Click Sketch and then click the arrow next to Fillet. Click Circular. Select the first line to be connected.
Make sure to select the point at which you want to place the fillet. Select the second line to be connected
at the approximate point at which you want to place the fillet. The fillet is created between the points
you selected and the lines are trimmed. Construction lines extend to the intersection point.

5. Click Sketch and then click the arrow next to Fillet. Click Elliptical. Select the first line to be connected.
Make sure to select the point at which you want to place the fillet. Select the second line to be connected
at the approximate point at which you want to place the fillet. The fillet is created between the points
you selected and the lines are trimmed. Construction lines extend to the intersection point.
6. Click Sketch and then click the arrow next to Chamfer. Click Chamfer. Select the first linear arc. Make
sure to select the point at which you want to place the chamfer. Select the second line or arc at the

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approximate point at which you want to place the chamfer. The chamfer is created. Construction lines
extend to the intersection point.

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 2.12 CONSTRAINTS

Fig 2.16 : Constraints

• To make a sketch parametric its position, orientation and dimensions are to be defined.
• To attain it two constraints are used,
1. Dimensional constraints
2. Geometrical constraints

• Constraints is a set of condition defined on a geometry. Also it helps to build relationship between the
sketch entities.
It is also used to restrict DOF of sketched entities.
2.5.1 Dimensional Constraints:

Fig 2.17: Dimensional Constraints

Sketches are automatically constrained and dimensioned at every stage of sketch creation to keep the
section solved. You can define new dimensions, modify automatically- generated dimensions, strengthen
weak dimensions, and delete dimensions. You can dimension the following types of entities:

Geometry
Construction
Reference
Intent datums

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 2.5.2 Sketch Constraints:

Fig 2.18 : Sketch Constraints

2.13 PART MODELLING

Creo Part allows you to work in a interactive 3D graphics work space to design model as,
1. Solid
2. Surface

Fig 2.19 : Part modeling

Solid are geometry which possess mass properties like

1. Volume

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2. Surface Area
3. Inertia

Surface are geometry which possess Zero Wall Thickness.

2.6.1 Part Modelling – Solid

To start part, click on File > New > New dialogue box appears Choose part from type and solid as Sub-
type enter name of the part and click ok.

Fig 2.20: Part Modelling - solid

2.14 SWEEP

Variable section sweep

The key components of the Variable sweep in general is Trajectories which are,

• Origin
• Chains

Create a variable section sweep using the sweep tool you can create a solid or surface feature. You add
or remove material, while sweeping a section along one or more selected trajectories by controlling the
sections orientation, rotation and geometry.

Fig 2.21 : Sweep

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 2.7.1 Sweep – Helical:

Create a helical sweep by sweeping a section (cross sectional sketch) along a helix (helical
trajectory). To define the helix, you define a helix profile and a Helix axis (axis of revolution for the
helix).

Fig 2.22 : Sweep – Helical

2.15 DATUM PLANES

Datum planes are used as a reference on a part where a reference does not already exist. For example,
you can sketch or place features on a datum plane when there is no other appropriate planar surface.
To select Datum plane in creo:

Fig 2.23 : 3Datum Planes

1. In Creo parametric select Part

2. In the model tab> Datum Group> Select Plane

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2.8.1 To Create an Offset Datum Plane:

Fig 2.24 : To Create an Offset Datum Plane

1. Click on datum plane. The datum plane dialog box opens.

2. Click the References collector, and select an existing datum plane or planar surface from which to offset
the new datum plane.
3. Select Offset from the constraints list in the References collector.
4. To adjust the offset distance, type a distance value in the Translation value box, or drag the handles in
the graphics window.
5. Click OK.

2.16 OFFSET REFERENCES

Offset references enable you to use additional references to constrain the Hole position in relation to
selected edges, datum planes, axes, points, or surfaces. You can define the offset references by snapping
the secondary placement handles to references.

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 Fig 2.25: Dashboard

Description:

You can create the following hole types:

Simple — Consists of an extruded or revolved cut that is not directly associated with any industry
standard. You can create the following simple holes types:
Predefined rectangle profile — Uses (straight) geometry predefined by the system. By default, the system
creates one-Sided simple holes. However, you can create two-Sided Simple straight holes by using the Shape
tab. Two-sided simple holes are typically used in assemblies and enable you to simultaneously format both
hole sides.
Standard hole profile—uses standard hole profile as drill hole profile. You can specify the countersink,
counter bore, and tip angle for the holes.

Sketch—Uses a sketch profile that you create in Sketcher.

Standard—consists of a revolved cut based on industry-standard fastener tables.

2.16 About the Variable Pull Direction Draft User Interface:

The Variable Pull Direction Draft tab consists of commands, tabs, and shortcut menus. Click Model,
click the arrow next to Draft, and click Variable Pull Direction Draft to open the Variable Pull
Direction Draft tab.

Commands:

• Collector—Displays a surface, a quilt, or a plane to determine the draft pull direction.

• —reverses the pull direction indicated by a yellow arrow.

• Collector—Displays multiple curve or edge chains that are draft hinges and that will have the same
draft attributes.

• —switches the draft surfaces of the set to the other side of the draft hinge.

• Box—Sets the value for the draft angle.

• Extent list—sets the length of the draft surface when quilt geometry is selected. If you activated split
draft geometry, it sets the length of the end section of the split- surfaced draft surface. The list is also
available on the Options tab and the shortcut menu.
• Specify Length—extends the geometry by a specified length.

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• Length box—sets a length value.

• To Selected—extends the geometry to the selected surface, quilt, or datum plane.

• Extent reference collector—displays a surface, quilt, or datum plane to define the extent of the draft
geometry.
• To Next—extends the geometry up to the next intersected surface.

• Unattached—Creates quilt geometry as a lightweight representation of solid geometry.

Tabs:

• References

• Pull Direction Reference Surface collector—displays a surface or surfaces that are tangent to each
other, a quilt, or a plane to determine the draft pull direction.
• Flip—Reverses the pull direction. Select a reference surface first.
• Sets table—Displays the draft set list. Click New Set to create a new set. Click a set number to activate
the set.
• Draft Hinges chain collector—Displays curve or edge chains that are hinges for draft geometry. You
can define multiple draft points along the draft hinge to set various draft angles.
• Details—Opens the Chain dialog box to manipulate the draft hinge chains.

• Set Flip—Switches the draft surfaces of the set to the other side of the draft hinge.

• Splitting Surfaces check box—Activates the Splitting Surfaces collector that defines the split draft
geometry.
• Splitting Surfaces collector—displays up to two points on the length of the draft surface at which you
can vary the draft angles that are already defined on the draft hinge. This point can be a datum plane, a
quilt, or a surface. The splitting objects must not intersect each other or the pull direction reference
surface.
• Angles table—Displays the angles and locations of the hinges of the active draft set.

Options:

• Attachment—Specifies whether to create solid or quilt geometry.

• Attach to solid or quilt—Attaches the draft geometry to existing solid or quilt geometry.
• Create new quilts—Creates new uncapped quilt geometry and specifies the lengthof the surface.
• Extent list—Sets the length of the draft surface when Create new quilts is selected.
• Specify Length—Extends the geometry by a specified length.

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• Length box—Sets a length value.

• To Selected—Extends the geometry to the selected surface, quilt, or datum plane.

• Extent reference collector—Displays a surface, quilt, or datum plane to define the extent of the draft
geometry.
• To Next—Extends the geometry up to the next intersected surface.

• Unattached—Creates quilt geometry that looks exactly like the solid geometry that would be added to
the model, if the Attach to solid or quilt option were selected. This is also called cap geometry as the
quilt ends are capped.

2.17 PATTERN FEATURES

Fig 2.26 : Pattern

Patterns are feature which are parametric in behavior which creates instances which are dependent to
parent feature. To pattern multiple features a local group should be created first and the patterned.
A pattern consists of multiple instances of a feature. Select a pattern type and define dimensions,
placement points, or a fill area and shape to place the pattern members. The resultof the operation is a
feature pattern. When you pattern this feature pattern, the result is a feature pattern pattern. You cannot
pattern either a group pattern or a feature pattern pattern.

Patterns offer the following benefits:

• Creating a pattern is a quick way to reproduce a feature.

• A pattern is para metrically controlled. Therefore, you can modify a pattern by changing pattern
parameters, such as the number of instances, spacing between instances, and original feature
dimensions.
• Modifying patterns is more efficient than modifying individual features. In a pattern, when you change
dimensions of the original feature, the whole pattern is updated.

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• There are several ways to pattern a feature:
• Dimension—Controls the pattern by using driving dimensions and specifying the incremental
changes to the pattern. Dimensional patterns can be unidirectional and bidirectional.
• Direction—Creates a free-form pattern by specifying direction and using drag handles to set the
orientation and increment of pattern growth. Direction patterns can be unidirectional and bidirectional.
• Axis—Creates a free-form radial pattern by using drag handles to set the angular and radial
increments of the pattern. The pattern can also be dragged into a spiral. Fill—Controls the pattern by
filling an area with instances according to a selected grid. Table—Controls the pattern by using a pattern
table and specifying the dimension values for every pattern instance.
•
• Reference—Controls the pattern by referencing another pattern.
• Curve—Controls the pattern by specifying either the distance between the pattern members or by
specifying the number of pattern members along the curve.
• Point—Places the pattern members on geometry sketch points, geometry sketch coordinate
systems, or datum points.
• Pattern creation methods are different, depending on the pattern type.
• To create a pattern, select the feature or feature pattern that you want to pattern and click Model >
Pattern, or right-click the feature name or feature pattern name on the Model Treeand choose Pattern on
the shortcut menu.
• Internal Sketches for Patterns

2.18 POINT

Fig 2.27 : Point

DESCRTIPTION:
You can create a pattern by placing pattern members at points or coordinate systems. Createor select any
of the following references when you use a Point pattern: A sketch feature that contains one or more
geometry sketch points or geometry sketchcoordinate systems.
An internal sketch that contains one or more geometry sketch points or geometry sketchcoordinate
systems. A datum point feature
An import feature that includes one or more datum points

An analysis feature that includes one or more datum points

To Create a Point Pattern with a Sketch

Select the feature to be patterned and click Model > Pattern. The Pattern tab opens.

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Select Point from the pattern type box. The Point pattern options appear. To use a sketchthat will place
pattern members, click . To select or create a sketch do one of the following:
To select a sketch, make sure the collector on the Pattern tab is active, and select a sketch. The sketch
must contain geometry points, a geometry coordinate system, or both.
To create a sketch:
Click the References tab.

Click Define to create an internal sketch. The Sketch dialog box opens.

Select a Sketch plane, Reference, and Orientation and click Sketch. The Sketch tab opens.
Sketch one or more geometry points or geometry coordinate systems.

Click OK. The Sketch tab closes.

Regeneration option—Reduces regeneration time by selecting a more restrictiveregeneration option,
depending on the complexity of the pattern:
Identical—All the pattern members are identical in size, are placed on the same surface,and do not
intersect each other or part boundaries.
Variable—The pattern members can vary in size, or be placed on different surfaces, butthey cannot
intersect each other or part boundaries. General—There are no pattern member restrictions.
Follow leader location—Offsets all pattern members from the sketch plane using thesame distance as the
pattern leader's offset.
Follow surface shape—Positions pattern members to follow the shape of the selectedsurface. Click the
collector and select a surface.
Follow surface direction—Orients the pattern members to follow the surface direction.
Spacing—Sets the way that the pattern leader and pattern members are projected ontothe surface.
Follow curve direction—Places pattern members in the sketch plane to follow the curve.
Click . The pattern is created and the Pattern tab closes.

2.19 MIRROR

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 Fig 2.28 : Mirror
To Add Features to or Remove Features from a Mirror Feature

This topic describes adding features to or removing features from a Mirror feature when you create a
Mirror feature, or when you edit the definition of a Mirror feature.
Creating a Mirror feature

While you create a Mirror feature, you can add and remove features depending on the dependency of the
mirror. Independent or partially dependent Mirror features

Select the Mirror items collector on the References tab.

o To add features to the Mirror feature, hold down the CTRL key while you select features in the
graphics window or Model Tree.
o To remove features from the Mirror feature, select the features to remove inthe Mirror items
collector, and right-click and choose Remove.

2.20 ASSEMBLY

Description:

You can create and save a cross section in Part or Assembly mode and show it in a drawing.When
inserting a view, you can add a cross section to the view. When creating a cross section, you can define
it using one of the following two basic methods:

• Following a selected datum plane or planar surface. This is a planar cross section.

• Drawing a path offset from a reference plane through a solid. This is an offset crosssection.
When inserting views, you can set each view type to use one of the cross section techniquesdescribed in
the sections that follow.

Fig 2.29 : Assembly section

Description:

To Create a Planar Cross Section

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1. Open a part.
2. On the View tab, click the arrow next to Section and then click Planar. The Section tab opens.
3. Select a planar surface, datum plane, or coordinate system axes reference to intersect the model. A cross
section is automatically created. A dragger appears at the center of the clipping plane. The dragger is
normal to the clipping plane and indicates the clippingdirection.
The Section reference collector on the References tab displays the name of the reference used to create
the cross section. Alternatively, you can choose to first select the planar surface, datumplane, or
coordinate system axis and then launch the Section tool.
4. Select the constraint type from the drop-down list:
a. Offset—Creates the cross section at the specified distance from the selected reference. Click and type a
value for the offset distance.
b. Through—Creates the cross section along the selected reference.

5. Click to change the clipping direction.

6. Change the location of the cross section by using the dragger or click to enable free positioning of the
clipping plane. When free positioning is enabled, you can translate androtate the orientation of the
clipping plane using the dragger.
7. Click or middle-click. The cross section is added to the Model Tree.

2.21 SHEET METAL

Planar

The Planar Wall tool to create a planar first wall or one or more unattached planar walls. While you can
use the tool to create the side walls of a design before creating the First wall, youmust connect or merge
the walls to complete the project. Create a closed loop for your planar wall sketch. Use the tool to set the
sheet metal thickness for the first planar wall. Any other wallsthat you create automatically use the same
thickness.
To Create a Planar Wall
1. Click Model > Planar. The Planar tab opens.

2. Click References. The References tab opens.

3. Click Define. The Sketch dialog box opens. Select sketch references and click Sketch.
4. Create a closed loop sketch and click OK to accept the sketch.
5. Type a value for the wall thickness or accept the default value. You can set thicknessonly for the first
planar wall, which sets the thickness for all other walls.
6. To flip the wall thickness, click .

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7. To flip the driving surface, click Options. The Options tab opens. Select Set driving surface opposite
sketch plane.
8. Click .

To access the Planar Wall tool, click Model > Planar Commands
Commands

Thickness box—Sets the sheet metal thickness. (Available only for the first planarwall.)

—Flips the direction of the sheet metal thickness.

Tabs
References—Displays the selected sketch in the collector. Edit opens Sketcher to editthe sketch.
Options—Options include:
o Set driving surface opposite sketch plane—Flips the driving surface of the sheet metal. This option
is not available for a first wall.
o Merge to model—Merges the wall to an existing wall in the design. Keepmerged edges—Wall
edges are not merged with existing wall edges. Properties—Displays detailed feature information: o
Name—Shows a name for the wall.

Flange Walls
A flange wall is an attached secondary wall, dependent on a first wall. It has an open cross-sectional
sketch that is extruded or swept along a trajectory. An attachment edge can be linear or nonlinear. The
surface adjacent to the attachment edge does not need to be planar.

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 CHAPTER 3 : TASK PERFORMED

Learning Creo Parametric, a powerful computer-aided design (CAD) software, involves a series of
tasks and experiences that gradually build proficiency and mastery. Here's a detailed exploration of tasks
typically performed when learning Creo Parametric:
Getting Started:

1. Installation and Setup: The initial step involves installing Creo Parametric and configuring settings
according to hardware specifications and user preferences.

2. Interface Familiarization: Understanding the user interface is crucial. Tasks include navigating
menus, toolbars, and panels, and customizing the workspace for efficiency.
Basic Skills Development:

3. Sketching: Learning to create 2D sketches forms the foundation. Tasks include using tools like
lines, circles, arcs, and constraints to define geometry.

4. Constraints and Dimensions: Applying geometric and dimensional constraints ensures sketches are
fully defined and adjustable. Tasks involve understanding relationships between sketch elements.

5. Extrusions and Revolves: Turning 2D sketches into 3D models via extrusions (pushing or pulling
sketches into 3D shapes) and revolves (rotating sketches around an axis).

6. Feature-Based Modeling: Utilizing tools for creating complex shapes and features like fillets,
chamfers, ribs, and drafts. Tasks focus on applying these features effectively to enhance designs.
Advanced Modeling Techniques:

7. Assembly Design: Creating assemblies by assembling multiple parts, defining relationships

(constraints), and checking for interferences. Tasks involve managing components and assemblies.

8. Parametric Modeling: Using parameters to control dimensions and features, allowing for easy
modifications and design iterations. Tasks include setting up parameters and using them in sketches and
features.

9. Surface Design: Working with advanced surfacing tools to create complex shapes and smooth
transitions between features. Tasks involve lofting, sweeping, and blending surfaces.
Analysis and Validation:

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10. Simulation and Analysis: Performing simulations to evaluate factors such as stress, strain, and
motion within designs. Tasks involve setting up simulations, running analyses, and interpreting results.

11. Design Validation: Checking designs for manufacturability and performance using tools like
interference detection, mass properties, and assembly checks.

Documentation and Communication:

12. Drawing Creation: Generating 2D drawings from 3D models, including views, dimensions,
annotations, and bills of materials. Tasks ensure accurate and comprehensive documentation for
manufacturing.

13. Collaboration and Data Management: Using PDM (Product Data Management) systems to manage
design data, revisions, and collaboration with team members.

Fig 3.1 : Creo parametric user interface Fig 3.4 : Assembly user interface in creo parametric

Fig 3.5 : Sketch in creo parametric Fig 3.7 : Part created in creo parametric (Base)

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Fig 3.7 : Part created in creo parametric (Bracket) Fig 3.8 : Part created in creo parametric (Bush)

Fig 3.9 : Part created in creo parametric (Roller) Fig 3.10 : Assembly of Belt roller in creo parametric

In this creo parametric we learn about the CAD/CAM and how to design, sketch, creating part
modeling and assembly of the parts. The above mentioned figures shows the user interface and chapter
2 shows the working of the commands to create models. Here we create the simple engine assembly by
making parts of it like base, bracket, bush, shaft and roller as shown in the above figures and fig 3.10
shows the complete assembly of the Belt roller support .
The given below scanner shows working video of the engine assembly.

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 CHAPTER 4 : REFLECTION NOTES

Certainly! When writing reflection notes for your internship report on Creo Parametric, consider
including the following aspects:

1. Learning Experience: Reflect on how much you knew about Creo Parametric before starting the
internship and how your knowledge and skills have grown during the internship period. Discuss the
specific features or tools within Creo Parametric that you have become proficient in.

2. Challenges Faced: Describe any challenges you encountered while working with Creo Parametric.
This could include technical difficulties, learning curves with specific functions, or adapting to the
software's interface.

3. Problem-Solving Skills: Share instances where you had to use problem-solving skills to overcome
obstacles related to Creo Parametric. Highlight any strategies you developed or lessons learned from
these experiences.

4. Team Collaboration: Reflect on how you collaborated with team members or supervisors while
using Creo Parametric. Discuss any collaborative projects or tasks you worked on and how the software
facilitated teamwork.

5. Achievements and Contributions: Detail specific achievements or contributions you made using
Creo Parametric during your internship. This could be completing a project, solving a particular design
challenge, or improving a process using the software.

6. Personal Development: Reflect on how the internship experience with Creo Parametric has
contributed to your personal and professional development. Consider how the skills and knowledge
gained will benefit your future career goals.

7. Future Applications: Discuss how you envision using Creo Parametric in your future career or
academic pursuits. Consider the practical applications of the skills you've acquired and how they align
with your career aspirations.

8. Overall Evaluation: Provide an overall evaluation of your internship experience with Creo
Parametric. Discuss what you enjoyed the most, what you found most challenging, and any suggestions
for improvement.
 CHAPTER 5 : CONCLUSION

"In conclusion, my internship at GTTC Harihara has been a transformative experience, equipping me
with the skills and knowledge to excel in the field of engineering design and analysis. I am confident
that my proficiency in Creo will enable me to make valuable contributions to future projects and drive
innovation in product development."

- "Through this internship, I have gained a comprehensive understanding of Creo's capabilities and
applications, which will undoubtedly enhance my career prospects. I appreciate the mentorship and
support provided by the GTTC Harihara team and look forward to applying my skills in real-world
scenarios."

- "In conclusion, my experience at GTTC Harihara has been a perfect blend of learning and application,
providing me with a solid foundation in Creo for design and analysis. I am eager to leverage this expertise
to drive engineering excellence and innovation in my future endeavors."

- "This internship has been a significant milestone in my academic and professional journey, offering
me hands-on experience with industry-leading software like Creo. I am grateful for the opportunity to
work with the talented team at GTTC Harihara and am confident that my skills will enable me to make
a meaningful impact in the industry."

- "In conclusion, my internship at GTTC Harihara has been an enriching experience that has not only
honed my technical skills but also instilled in me a passion for engineering design and analysis. I look
forward to pursuing a career in this field and continuing to leverage Creo's capabilities to drive
innovation and excellence."
 REFERENCES

Creo for design student manual.

https://drive.google.com/file/d/1FgQgRn4VmW3Jt2xpuSO1nhNdxuhyjIuF/view?usp
=sharing

Previous internship report.

https://www.scribd.com/document/519875680/Internship-Report-37

PTC Support

https://support.ptc.com/help/creo/creo_pma/r11.0/usascii/index.html#page/part_model

ing/sketcher/About_References.html

SDC Publications

https://static.sdcpublications.com/pdfsample/978-1-63057-378-2-1-ir1791wrmb.pdf