Syllabus for Machinisht Grinder 3rd sem.

Syllabus for Machinisht Grinder 3rd sem. 

Trade theory

Syllabus for Machinisht Grinder 3rd sem. 

1. Cylindrical grinding machine, its parts, 

use care and maintenance surface grinding 

machine-its parts use care and 

maintenance Universal cylindrical 

grinding machines parts description use, 

care and maintenance. Internal grinding 

machine and its parts their description, 

use care and maintenance.

 

02. Tool and cutter grinding machine-parts 

and accessories, description use, care and 

maintenance, pedestal grinder and bench 

grinder-their description and uses.

03. Dial test indicators marking block, height gauge and surface plate their description.

04. Principle of vernier caliper, protractors, 

micrometers (O/S, I/S and depth) and 

other instruments having vernier 

graduations. Combination sets-their use 

care and maintenance.

05. Bonding materials their kinds description and uses. Grade and structure at grinding 

wheels. Brief about I.S.O. 9000. 

Importance of Quality.

06. Wheel marking system selection of 

wheels. Specification and types (shapes & 

size) of grinding wheels, diamond wheels 

and their uses.

07. Mounting of grinding wheels, grinding 

wheels, collets and mandrels, balancing of 

grinding wheels by different methods.

08. Types of dresses-steel type, abrasive 

Diamond tool and rotary dresses abrasive 

bricks and sticks their description, use, 

care and maintenance.

09. Dressing and truing of grinding wheels 

advantage of balancing, inspections and 

care of grinding wheels. Wheel storage.

10. Heat generated in grinding dry and wet 

grinding, use of coolants their 

composition and selection, limit, fit and 

tolerances as per ISI : 919-1963. Basic 

size and its deviation position of tolerance 

zone with respect to zero lines. Fits 

different types clearance, interference and 

transition Interchangeable system Letter 

symbols for holes and shafts and 

fundamental deviation hole basis and 

shaft basis systems.

11. Gauges-feeler, taper gauge radius, plug, ring snap (fixed and adjustable) and slip their description use care and maintenance.

12. Inside micrometer depth gauge, special types of micrometers, universal dial test indicator their construction and function.

13 . Special type of grinding machine centreless, thread crankshaft etc. their description, use care and maintenance.

14 Essential mechanism of grinding machines, wheel is guards to IS: 1991-1962 machine guards etc. Process of cleaning and oiling at grinding machines (care and Maintenance) types of steady rests their description and use

15 Principle types of grinding fluids importance of uniform temperature, selection and use at grinding fluids, method of supplying grinding fluids.

16 Types of holding devices methods of holding work, type of centres - holdong work between centres types of chucks and holding process in chucks.

 

17. Holding work on face plate, pneumatic chuck and magnetic chuck. Precautions to taken before grinding, peripheral of surface speed of grinding wheels, importance of constant wheel speeds, calculations at S.F.P.M.

18 Calculation at R.P.M. and S.F.P.M. of grinding wheels calculation of work speed for cylindrical grinding speed and feeds for cylindrical grinding speed and feeds for internal grinding.

19 Traverse and over run of traverse, width of wheel and depth of cut in different types of grinding achiness. Grinding allowance and time estimation. Rough and finish grinding process.

20 Surface grinding methods of surface grinding by using periphery of grinding wheel and ring edge of grinding wheel. Types of surface grinding machines. Work finish, wheel selection holding of work.

21  Process of grinding angular surfaces. Grinding slots and grooves. Grinding "V" blocks. Recommended wheel speeds for surface grinding machines.