Today’s competitive manufacturing era of high industrial development and research, is being called the age of mechanization, automation and computer integrated manufacturing. The study of the scientific principles underlying the art of engineering manufacture is the study of Workshop Technology, an all-important subject when one considers that it is skill in engineering manufacture that makes possible a standard of living beyond the wildest expectations of the previous generation. It is the type of technology which deals with different processes by which component of a machine or equipment are made. It is the emergence of the machine tool within the last 2 centuries that has made possible the ability of the civilized world to provide the essentials of existence to its own rapidly growing population, and perhaps of greater importance, to make available modern techniques and processes to the underdeveloped territories of the world. Due to new researches in the manufacturing field, the advancement has come to this extent that every different aspect of this technology has become a full-fledged fundamental and advanced study in itself. The scope of the subject of workshop technology and manufacturing practices are extremely wide as it specifies the need of greater care for man, machine, material and other equipment involving higher initial investment by using proper safety rule and precautions.

This book is designed to help students acquire requisite knowledge and skills in basic workshop technology and practices, workshop management, workshop organization and handling of tools and machines in preparation to meet the demands of the manufacturing sector of our economy. It puts emphasis on areas related to welding, casting process, lathe, boring machines and grinding machines. It provides empirical information about various methodologies and aspects of cutting tools and cutting materials, drilling and drill machines. This book also covers milling machines and broaching. It has been written in a logical sequence so that the students can move on to complex manufacturing processes after acquiring knowledge about the basics of processes and materials. It has considerable importance for the students of mechanical engineering and scholars, who are interested and engaged in this area.

Preface

 

1. Welding and its Applications

1. Introduction

2. Classification of welding processes

3. Electric arc welding

4. Electrodes

5. Types of welding joints

6. Welding defects

7. Gas welding

8. Welding methods (techniques)

9. Soldering

10. Brazing

11. Welding of copper

12. Electroslag welding

Epilogue

References

2. Casting Process and its Applications

1. Introduction

2. Casting process

3. Pattern and allowances

4. Core prints/types of core prints

5. Moulding sand and its desirable properties

6 Defects in castings

7. Gating system

8. Special casting processes

Epilogue

References

3. Lathe

1. Introduction

2. Types of lathe

3. Lathe operations

4. Description and functions of various parts of a lathe

5. Work holding devices

Epilogue

References

4. Boring Machines

1. Introduction

2. Principle of boring

3. Classification of boring machines

4. Specifications of a horizontal boring machine

5. Specifications of vertical boring machine

6. Boring tools

Epilogue

References

5. Cutting Tool and Cutting Materials

1. Introduction

2. Cutting tools

3. Single point cutttng tool geometry

4. Cutting tool matertals

5. Cutting fluids

Epilogue

References

6. Drilling and Dril Machines

1. Introduction

2. Classification of drilling machines and their description

3. Sensitive or bench drill machine

4. Drive mechanism of a bench drilling machine

5. Various operations performed on drilling machines

6. Speeds and feed during drilling cutttng speed (v)

7. Types of drills and their features

8. Drill materials

9. Drill holding devices

Epilogue

References

7. Milling Machines

1. Introduction

2. Milling

3. Working principle of milling

4. Classification (types), brief description and applicat- ion of milling machines

5. Details of column and knee type milling machines

6. Milling machine accessories: cutter holding devices

7. Milling methods-up milling and down milling

8. Different milling cutters

9. Milling operations

Epilogue

References

8. Grinding Machines

1. Introduction

2. Grinding

3. Grinding wheel

4. Specifications of grinding wheels

5. Selection of grinding wheels

6 Mounting of grinding wheels

7. Cutting fluids used in grinding

8. Methods of grinding

9. Grinding machines

Epilogue

References

9. Shaper

1. Introduction

2. Working Principle of a Shaper

3. Description of Main Parts

4. Size and Specification

5. Classification of Shapers

6. Shaper Operations

7. Quick Return Mechanism for Shaper

8. Cutting Speed, Feed and Depth of Cut for a Shaper

Epilogue

References

10. Broaching

1. Introduction

2. Broaching machines

3. Elements of broach tools

4. Broach material

5. Broaching methods

6. Types of broaches

7. Broaching fixtures

8. Broaching operations

9. Advantages and limitations of broaching

Epilogue

References

Index