MACHINIST / GRINDER
Name of Sector Production & Manufacturing Name of Module Grinding
Minimum Age 18 Years Duration of Course 6 Months
ADU Code MAN706

Degree in Mechanical Engineering with one year Experience

(OR)

Diploma in Mechanical Engineering with two year Experience

(OR)

NTC/ NAC in Turner Trade with three years of Experience



TERMINAL COMPETENCY: The successful candidate would be able to:

Use safety devices.

Familiar with the necessary safety precautions required to perform while surface grinding.

Know the measuring instruments and its application.

Select the proper grinding wheel for each type of work material.

Know the application of grinding wheels and abrasive products.

Operate the surface-grinding machine along with magnetic chuck and standard accessories.

Balancing, mounting and dressing of grinding wheel.

Grinding of parallel surface, angular surface and stepped surfaces.

Know the purpose of heat treatment process.

Identify surface grinding faults, causes and remedies.

Operate the cylindrical grinding machine along with magnetic chuck and standard accessories.

Set up and grinding stepped, taper cylindrical internal and external surfaces.

Balancing, mounting and dressing of grinding wheel.

Know the purpose of hardening and tempering cutting tools.

Identify surface grinding faults, causes and remedies.



Practical Competencies Underpinning Knowledge (Theory)

OSH & Safety Practices:

  • Fire Fighting in workplace & Precautions
  • General Safety of Tools & Equipments
  • Awareness on OSH related to the job


  • Fire Extinguishers & its Types
  • Safely handling Tools & Equipments
  • Use of proper Tools & Equipments & its maintenance
  • OSH & practices to be observed as a precaution

Personnel & Material Safety:

  • Safety precautions followed in grinding, i.e.Wear suitable eye goggles, shoes, clothes etc.
  • Use and store of materials in a safe manner.
  • Demonstrate the use of safety devices on grinding machines.


  • Describe personal safety measures when grinding.
  • State the safety precaution specific to grindingoperation.
  • Safety related to handling of materials.
  • Safety devices used for safe machining.

Surface Grinding

  • Grinding m/c specification:
  • Machine operational system and safety switch
  • Movement of machine hydraulic or mechanical drive
  • Longitudinal movement and its limits
  • Up and down movment and its limits
  • Machine up and down movement and its minimum feed.
  • Cross drive movement and its limits
  • Setting of job in magnetic chuck or vice
  • Demonstration on operation of grinding m/c.
  • Practice on operation of grinding machine.
  • Selection of tools, general cleaning and maintenance and safe storage of tools applicable to workshop tasks.
  • Identify the controls of surface grinding machine.
  • Setting on magnetic chuck.


  • Describe surface grinding machine -types, construction, parts, and functions.
  • State the purpose of surface grinding.
  • Specification of a grinding m/c.

Grinding wheel specification:

  • Wheel balancing.
  • Dressing of grinding wheels for rough and finish grinding
  • Testing a grinding wheel for cracks and defects by tapping method
  • Practice on mounting of grinding wheel.
  • Inspect a used grinding wheel & find defects.
  • Practice on balancing a grinding wheel.
  • Practice on Truing of a grinding wheel.


  • Specifications of grinding wheels. Aluminium oxide A 40 white wheel
  • Describe the selection criteria of grinding wheels.
  • Identify the standard grinding wheel shapes.
  • Mounted grinding wheels.
  • Describe grinding wheel markings.
  • Describe Handling and storage of grinding wheel.
  • Describe Diamond wheel identification.
  • Explain the importance of inspection of wheels.
  • Describe Balancing, mounting and Truing of agrinding wheel.

Job Holding & Centering:

  • Demonstrate the use of job holding devices on grinding machines & safety precautions.
  • Use of work holding devices on grinding Machine.


  • Different job holding devices in grinding.
  • Describe work holding devices-Magnetic vice,chucks.
  • Explain the principles workshop layout, blueprint reading.
  • Describe type of grinding fluids and purposes

Measuring job:

  • Check measurements of components/machinedparts with vernier calipers, micrometer, and Depth gauges and slip gauges


  • Describe the principle of the measuring instruments: its use and care for measurement setting up and assembly operations-
  • Micrometer: internal, external, depth.

    Vernier: Caliper, depth, height.

Surface Grinding operation:

  • Grinding parallel surface to an accuracy of ±0.02 mm.
  • Grinding a surface at 900 to an accuracy of 5'.
  • Grinding steeped surface to an accuracy of ±0.04 mm.
  • Grinding a slot to an accuracy 0f ± 0.02 mm.
  • Grinding Angular surface using universal vice.
  • Grinding parallel blocks.
  • Practice on taper grinding using sine wise.
  • Grinding thin plates.
  • Grinding on two vertical faces parallel & centered.
  • Grinding "vee" using disc wheel.
  • Grinding dovetails.
  • Grinding radii (male & female)


  • Describe surface grinding operation-Horizontal,Vertical, Angular, and edges of a surface.
  • Explain the importance of surface roughnessand measuring methods.
  • Describe the importance of demagnetizations ofjobs.
  • Identify surface grinding faults, causes & remedies.
  • Describe Annealing of work material -steel, cast-iron, Aluminum.
  • Describe normalizing of Forging, Casting & Machined jobs.
  • Practice for dressing with angular dresser and use for grinding V block
  • Check the centre shift of the V block using surface plate and dial.
  • Educate use of different types of grinding wheels for Cast Iron, Steel, stainless Steel, and Carbide.
  • Dressing of diamond wheels.

Cylindrical Grinding Machine Specification

Training of cylindrical grinding operational system , hydraulic operational system , stroke limits longitudinal and cross feed movement of machine, work head chuck mounting , change from chuck mounting to between center, mounting of carrier / dog, use of dead center and Half center for min dia grinding, mounting of grinding wheel in wheel flange and balancing , dressing attachment mounting , use of study and follow rest for grinding long shaft, use and application specification of coolant fluid and proportion of mixing of water , learn to use appropriate grinding wheel according to the material spec , hardness , material and application of travers feed with depth of cut , use of lapping wheel and the control limit in the pre preparation of job.

Cylindrical Grinding operation:

  • Check measurements of components/machined parts with vernier calipers, Depth gauges, inside/outside and bore dialgauges.
  • Identify the controls of cylindrical grinding machine.
  • Practice on balancing a grinding wheel.
  • Practice on mounting a grinding wheel.
  • Practice on Truing of a grinding wheel.
  • Plunge grinding a parallel diameter to a dimensional accuracy of ± 0.05 mm.
  • Grinding slow taper surfaces with in a accuracy of 5minutes.
  • Grinding fast taper surfaces with in a accuracy of 5minutes.
  • Grinding radii.
  • Grinding parallel bore
  • Grinding a bore up to a shoulder.
  • Grinding a bore and shoulder.
  • Grinding a face.
  • Grinding a bore in a long work piece.
  • Grinding a tapered bore.
  • Grind cylindrical plain internal surfaces on a cylindrical grinder to an accuracy of ± 0.05 mm.
  • Wheel dressing for face grinding.
  • Use of male or female taper plug /ring gauge for grinding Morse taper and ISO 40/50 taper.
  • Checking the taper with sine bar and slip gauge.
  • Use of bore dial indicator with 0.01 to 0.001 accuracy.
  • Grinding of bush ID ground by using taper mandrel for OD grinding
  • Mounting of spindle for ID grinding using study
  • Grinding of center for center correction
  • Use of radius dresser attachment for radius grinding
  • Lear to measure radius jobs with micrometer


  • State the purpose of cylindrical grinding
  • Describe Cylindrical-grinding machine -types, parts, function and operation.
  • Describe the procedure of Balancing, mounting and Truing of a grinding wheel.
  • Describe work holding devices- 4- jaw independent chuck, 3 - jaw chuck, faceplate and carriers.
  • Describe the type of grinding fluids and purposes.
  • Describe the methods of producing external and internal cylindrical surfaces of plain taper and stepped surfaces.
  • Describe the main factor of grinding parameters-wheel speed, work speed, depth, and work traverse speed, depth in feed.
  • Describe the method of Inspection of cylindrical surfaces.
  • Concept of Centreless Grinding & Profile Grinding. Identify cylindrical grinding defects, causes and remedy.
  • Describe the main factor of Hardening & Tempering of chisels (water hardening) cutting tools Describe (Oil hardening) & H. S. S (Air Hardening)
  • Describe the Importance of case hardening & stress relieving.