Table of Content
 

Manufacturing Process

  • Centre Lathe and its Parts
  • Turning and centre Lathe
  • Bed
  • Ways
  • Headstock
  • Gearbox
  • Constructional features of Lathe
  • Lath Diagram
  • Spindle
  • Chuck
  • Tailstock
  • Tailstock Quill
  • Carriage
  • Cross Slide
  • Tool post
  • Feed Road
  • SplitNut
  • Quick Change Gearbox
  • Follow Rest
  • Safety Precaution
  • Before Working
  • During working
  • After Working
  • Lathe operation-cutting speed and feed
  • Cutting speed
  • Factors governing the cutting speed
  • Factors governing feed
  • Rate of metal removal
  • Cutting speed and feed for hiss tools
  • Turning time calculation
  • Purpose of facing
  • Defects found on facing
  • Defects found on faced work
  • Convex face
  • A pip in the center
  • Plain turning
  • Rough turning
  • Finish turning

Lathe bed

  • Functions of a lathe bed
  • Constructional features of lathe bed
  • Bed-ways
  • All geared headstock
  • Cone pulley head stock
  • Tailstock
  • Functioning of a tailstock
  • Purpose of a tailstock

Lathe Operation-different types of shoulders

  • Shoulder
  • Types of shoulders
  • Purpose
  • Divider caliper
  • Oddleg caliper
  • Venire caliper
  • Outside jaws
  • Inside Depth probe
  • Main scale
  • Vernier
  • Retainer
  • Micrometer caliper
  • Firm joint caliper
  • Spring caliper

Lathe operation – knurling

  • Knurling
  • Firm joint caliper
  • Spring caliper
  • Purpose of knurling
  • Types knurling
  • Diamond knurling
  • Cross knurling
  • Concave knurling
  • Convex knurling
  • Grades of knurling
  • Types of knurling tool holders
  • Single roller knurling
  • Differences between different types of knurling tool holders
  • Knuckle joint type knurling tool holder
  • Revolving head knurling tool
  • Chamfering
  • Purpose of chamfering
  • Methods of chamfering
  • Using a chamfering tool
  • Using a file
  • Grooving
  • Types of grooves
  • Round groove
  • V shaped groove

Lathe Operations – center drilling

  • Center drilling
  • Defects in center drilled holes
  • Center drills
  • Classification as per Indian standard
  • Uses and specifications
  • Methods of center drilling
  • Centering in two operations
  • Lathe centers
  • Types of centers and their uses
  • Soft center
  • Live or revolving center
  • Pipe center
  • Cup center
  • Drive center
  • Spring center

Lathe accessories-work holding and work supporting

  • Work holding accessories
  • Three-jaw
  • Face plates
  • Unusual slotted faceplate
  • Lathe mandrels
  • Work supporting accessories
  • Accessories used for in-between center works
  • Lathe carriers

Threading

  • Tolerancing of screw threads
  • Method of and an arrangement for producing threads
  • Making a screw with a lathe
  • Threading on a lath

Lathe mandrel

  • A mandrel

Cutting fluids

  • Functions
  • Advantages
  • Properties of good cutting fluid
  • Aluminum cutting fluid
  • All purpose cutting oil
  • Sawing fluid
  • Thread cutting oil
  • Synthetic cutting fluid concentrate
  • Straight mineral oil
  • Chemical solution (synthetic oil)
  • Advantages
  • Disadvantages
  • Compounded or blended oil
  • Fatty oil
  • Soluble oil [Emulsified oil]

Classification of steels

  • Carbon steels
  • Designation system
  • Alloy steels
  • Classification of steels by application
  • Stainless steels
  • The letter means
  • Metals commonly used for making gallory steels nickel (Ni)
  • Chromium (Cr)
  • Manganese (Mn)
  • Silicon (Si)\Tungsten (W)
  • Vanadium (Va)
  • Cobalt (co)
  • Molybdenum (Mo)
  • Cadmium (Cd)

Heat treatment processes

  • Purpose of the heat treatment
  • Purpose of the heat treatment
  • Stages of heat treatment process
  • Annealing
  • Normalizing
  • Hardening (by quenching)
  • Hardening followed by tempering
  • Tempering
  • Tempering requires

Introduction to grinding process

  • Introduction

Types of grinding operations

  • Surface grinding
  • External cylindrical grinding
  • Internal cylindrical grinding
  • Form grinding
  • Grinding machines
  • Surface grinding
  • Cylindrical grinder
  • Tool and cutter grinder

Surface Grinding Machine

  • Surface Grinding machine
  • Types of surface grinders
  • Horizontal spindle reciprocating table surface grinder
  • Function
  • Specification of surface grinder
  • Surface grinding operations

Standers Marking System For Grinding Wheels

  • Specifcations of Grinding Wheels

Contruction of a Grinding Wheel

  • Grade
  • Structure

Types of Bonds and their uses

  • Vitrifies Bond(V)
  • Silicate Bond (S)
  • Shellac Bond (E)
  • Rubber Bond (R)
  • Resinoid Bond (B)

Grinding Wheel-Staneard Dhapes and Appilcation

  • Straght Wheel
  • Cylinder

Tapered

  • Recessed one side
  • Straght cup
  • Recesssd both side
  • Flaring cup
  • Disc
  • Saucer
  • Segmented Wheels
  • Mounted Wheels

Types of wheel faces

  • Grinding wheel specifcation

Cylindriacl Grinders

  • Plain centre type cylindrical grinder
  • Parts
  • FunctionsSpecification

Work-holding Devices

  • Magnetic chuck
  • Vices
  • Angle Plate
  • V Block
  • De-Magnetizer

Grinding Wheel Dressing

  • Truing
  • Diamond Dressers.
  • Steel dressing tools
  • Abasive stick

Selection Of Grinding Wheel

  • Material to be grund
  • Amount of stock to be removed
  • Finish requird
  • Type of grinding operatiing
  • Wheel speed
  • Condition of the machine

Basic Idea of Hardness Testing

  • Hardness test methods
  • The Brinell Hardness Test
  • Vickers hardness Test Micro hardness Test
  • Hardening and tempering
  • Hardening and Tempering Steel
  • Water-Hardening tool steel
  • Oil-hardning tool steel
  • Cutting Tool
  • Cutting Tool Terminology
  • Annealing
  • Annealing Steel
  • Annealing Cast iron
  • Normalizing

Importance of case Hardening & Stress Relieving

  • Case Hardening Of Mildsteel

Apply for Certification

https://www.vskills.in/certification/Vskills-Certified-Turning-and-Grinding-Operator