Textile Mechanisms in Spinning and Weaving Machines

Description

This book has been written in response to numerous suggestions and great interest of colleagues and students in the textile industry to note the various design aspects in the mechanics of the textile machineries. It provides information about the mechanics involved in the machineries like transmission of power through various means of driving arrangement available in the textile machineries. In addition, many practical problems have been included in the calculations of differential gear assembly in the speed frame process and also the design of cone drums in blow room/speed frame machineries.

Table of Contents

1. Preface
2. Foreword
3. Belt, rope and chain drives
   1. Introduction
   2. Selection of belt drive
   3. Types of belt drives
   4. Types of belts
   5. Flat belt drives
   6. Velocity ratio of belt drive
   7. Power transmitted by a belt
   8. Ratio of driving tensions for flat belt drive
   9. Centrifugal tension
   10. Initial tension in the belt
   11. V-belt drive
   12. Rope drive
   13. Chain drives
4. Gear trains
   1. Introduction
   2. Nomenclature of gears
5. Rotary motion
   1. Introduction
   2. Linear displacement
   3. Angular displacement
   4. Speed
   5. Transmission of rotary movement in machines
   6. Classification of gears
   7. Gears in textile machines
   8. Equations of movement
   9. Acceleration
   10. Retardation
6. Parallelogram of velocities
   1. Introduction
   2. Velocity
7. Force, mass and momentum
   1. Introduction
   2. Definitions and units
   3. Units of force
   4. Momentum in quantity of motion
8. Work and power
   1. Introduction
   2. Units of work (in SI units)
   3. Graphical representation of work
   4. Useful definitions
   5. Work done by a varying force
9. Resolution of forces
   1. Introduction
   2. Lines of representation of forces
   3. Law of Polygon of forces
   4. Law of Triangle of Forces
   5. Tension and compression
   6. Graphical methods
   7. Resolution and composition of a force
   8. Resolution of a number of coplanar forces
10. Centre of gravity
    1. Introduction
    2. Centre of gravity of irregular bodies
    3. Centre of gravity of levers
    4. Principle of moments
    5. Moment of force
    6. Geometrical representation of moments
    7. Types of moments
    8. Clockwise moments
    9. Anti-clockwise moments
    10. Varignon’s Principle of Moments or Law of Moments
    11. Moments on bent lever
    12. Moments of bent lever in weighting arrangement
    13. Bent lever in weighting of single yarns
    14. Bent lever on Lea strength tester
11. Friction
    1. Introduction
    2. Types of friction
    3. Limiting friction
    4. Coefficient of friction (Fig. 11.2)
    5. Laws of solid friction
    6. Friction of shaft in its bearings
    7. Friction clutches
    8. Power transmission
12. Coil friction
    1. Introduction
    2. Friction on curved surface
    3. Coefficient of friction on solid surface
    4. Transmission of power by belts and rope drives
    5. Transmission of power by V-belts and rope drives
    6. Brakes
13. Lifting machines and velocity ratio
    1. Introduction
    2. Definitions
    3. Velocity ratio
    4. Velocity ratio on simple pulleys
    5. Weston differential pulley block
    6. Types of machines
    7. Law of a machine
    8. Stress, strain and elasticity
    9. Stress
    10. Energy
    11. Momentum energy impulsive forces and impact
    12. Momentum
    13. Law of Conservation of Momentum
    14. Collision of two bodies
    15. Collision of inelastic bodies
    16. Collision of elastic bodies
    17. Coefficient of Restitution (e)
    18. Impulse
    19. Energy
    20. Potential energy
    21. Kinetic energy
    22. Strain energy
    23. Law of Conservation of Energy
14. Motion in a circle
    1. Introduction
    2. Centripetal force
    3. Centrifugal force
    4. Conical pendulum
    5. Tension in rotating masses
15. Simple harmonic motion
    1. Introduction
    2. Definitions of few terms
    3. Simple pendulum
    4. Helical springs
    5. Moments of inertia and kinetic energy of rotating bodies
    6. Mass moment of inertia
    7. Fundamental equation for a rotating body
    8. Kinetic energy of a rotating body
    9. Compound pendulum
    10. Centre of percussion
16. Practical methods of finding moment of inertia
    1. Introduction
    2. Flywheel
    3. Methods of finding Moment of Inertia of fly wheels
    4. Bifilar suspension
    5. Referring Moment of Inertia
    6. Moment of inertia referred to its driving shaft
    7. Winding mechanics
17. Cams
    1. Introduction
    2. Classification of cams
    3. Classification of followers
    4. Cams in textile machines
    5. Construction of the cam design
    6. Terms in Cam profile
    7. Scutcher feed regulating mechanism (Fig. 20.15)
    8. Cone drum construction (Fig. 20.16)
    9. Design of cone drum profile (Fig. 20.17)
    10. Design of cone drums in speed frame (Fig. 20.18)
    11. Tappets
    12. Construction of shedding tappet
    13. Determination of tappet lift
    14. Determination of NPC and FPC
    15. Relation between dwell period and type of healed movement
    16. Tappet design for plain weave
    17. Design of tappet for twill weave
    18. Construction of a shedding tappet for three-shaft weave
    19. Cranks and eccentrics

Author Description

Ganapathy Nagarajan has around 23 years of experience in the spinning mills of repute in North India in production, maintenance, and in Quality Assurance department as General Manager (Technical) in Bangladesh. He has worked in The South India Textile Research Organization (SITRA) in the spinning division for 5 years. At present, he is associated with Aksum University Axum, Ethiopia as Asst. Professor in Textile Engineering Department.