Rajat Report on Folding Table

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SWIFT INSTITUTE OF ENGINEERING AND

TECHNOLOGY

FOLDING TABLE

Centre Name: Department of Mechanical Engineering

Course Name:BEng (Hons) in Mechanical Engineering

Name of the Student : Rajat Thakur

Student Registration No : 4927112

Module Leader at SIET : Er. Avinash Sharma

Module name : Product Innovation-1

Module code : 103MED

FULL TIME 2011 BATCH

SWIFT

Institute of Engineering Technology

NH-1 (GT Road, Ambala-Rajpura Road), Village Ghaggar Sarai, Tehsil Rajpura,

Near Chandigarh, Phone: 01762-653643, Fax: 0172-2652242, Website:www.sfresedu.com
http://www.sfresedu.com/http://www.sfresedu.com/http://www.sfresedu.com/http://www.sfresedu.com/


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Index

Serial No. Contents Page No.

1 Acknowledgement 4

2 Introduction 5

3 CAD Drawings 6-15

4 Raw material and tool 16

5 Manufacturing Process 17-20

6 Forces & Deflection 21

7 Physical and mathematical techniques 22

8 Material Considerations 23

9 Aesthetic Appeal 23


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ACKNOWLEDGEMENT

I owe a great many thanks to a great many people who helped andsupported me during the writing of this book. My deepest thanks to Asst. proff.

Avinash sharma, the Guide of the project for guiding and correcting variousdocuments of mine with attention and care. He has taken pain togo through the project and make necessary correction as and when

needed.I express my thanks to the Principal of S.I.E.T. Mr. Rajnish talwarfor extending his support. My deep sense of gratitude to Prof. Satbir singhSehgal(H.O.D.) for his support and guidance. I would also thank my Institutionand all faculty members without whom this project would have been adistant reality. I also extend my heartfelt thanks of my family and wellwishers.


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IntroductionThe project involves designing and fabricating a folding table. Basically theentire table could be divided into three stages, which are concept reviewand development, designing and fabrication. The folding table is equippedby using wood material which include wood board legs, Ply wood, rectanglesolid surface and hinge in manufacturing process.The advantages of the folding table to be developed can be seen to bebrought easily to another size because the shape can be fold to the smallsize and easily to store after using session finished into the small place.

The process of development is initiated from designing the shape of thefolding table by considering the function as well. In order to produce userfriendly product that is suitable to the consumer, consideration to theergonomic factor is taken into account. It involves the measurementprocess before the materials are cut into pieces before joined together.


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http://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-

table.html
http://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-table.htmlhttp://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-table.htmlhttp://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-table.htmlhttp://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-table.htmlhttp://www.purelifevision.com/products/anderson-teak-tbf035r-35-round-bistro-folding-table.html


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CAD Drawings

I make the CAD Drawings by using solid works of these parts:-

1. Surface views

2. Legs

3. Hinge

4. Assembled folding table

In the next few pages I have provided the separate top view, front view, right hand sideview, isometric view for the above listed parts.

1. Surface

R.h.s. view of surface


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Top view of surface

Front view of surface


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Isometric view

2. Leg

r.h.s. view of leg


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top view of leg

Front view of leg

Isometric view of leg


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3. Hinge

R.h.s. view of hinge

Top view


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Front view


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Isometric view

4. Final product

R.h.s. view


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Top view

Front view


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Isometric view


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Raw material:-

material used to manufacture the folding table:-

1. Wood board

2. ply wood

3. hinge

Tools and machine:-1. Saw

2. Hammer

3. Planner machine

Manufacturing process:-

1. Raw material:-1. Wood board

2. iron nails

3. screws

4. hinge


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2. Tools Used:-1. Saw

2. Hammer

3. Wood Planner

4. Tape measure


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3. Cutting:-

I used saw for cutting the wooden board and logs.

4. Pieces after cutting:- I cut the bard in 4 parts in which 1 is the surface and3 are its legs.


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5. Assembly:- after getting 4 parts I assembled them.


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6. Final product:- after assembly I got my final product that is our folding table.


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Forces and deflection

Various forces and deflection occur in a folding table: There occur several types offorces occur in a folding table such a shear forces, bending moment, couples, stress,

strains etc Upper base of the folding tale is such type of simply supported beam. The

analysis of folding table that carry a transverse load deals with the computation of

internal forces , because shear forces and internal coupes may vary in a complicated

manner with distance along the lower base of the table. For a designing a folding table it

must be necessary to know the value of shear force, couples and bending moment. I

have design a folding a folding table which has a capacity of load 75 kg .Normal

reaction occur at six legs which is perpendicular to the base and the weight occur

vertically downward. Tension occurs at each leg towards the normal. when I applied a

load above 70kg there occur in some deflection in a folding table .To reduce the

deflection in this product ,so I give extra support at the each end of the table. To

minimize the load deflection can also be reduced. The processes of bending a

rectangular cross section subjects the materials to the tensile stresses and strains in the

outer half of the bent section and compressive strains in the inner half if the material

does not fracture it becomes permanently (plastically) bent.

Physical and mathematical

In order to stop the legs to go further. I made stoppage so that they remain in

their prescribed position.

I calculated the length of the two pieces of a single leg which has movement

around the hinge so that all the three legs form a flat base after opening.

With the help of a setsquare I cut out a perfectly rectangular top for the folding

table.

I calculated the spacing to be provided when the legs are folded to rest accordingto the thickness of the wood board.


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Material consideration

In a project material consideration play very important role because it show that what are the

properties of the material, how useful it is for the user. it also show that it is environment friendlyor not.

Raw material used: I have used wood, iron nails and plywood for assemblypurpose I used the nails and hinge.

Properties of material:-

Wood:-

Wood is used in many purposes :-

1. Light in Weight

2. Tensile in nature.

3. Easy to cut.

4. Low cost and easily available.

Uses:-

used in home for cooking. for photo frame

furniture

Aesthetic appeal

Looks like single board after folding

strong and can use on bed

Small in size

Easy to use

Take less space after folding

Rajat Report on Folding Table

Documents

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