about drilling and lathe machine operations what i have i learnt in drilling or lathe i think it is useful for you

1. DRILLING OPERATIONS
AND LATHE OPERTIONS

2. There are 8 types of drilling machine
1. Boring
2. Reaming
3. Tapping
4. Counter boring
5. Counter shink
6. Spot face
7. Chamfering
8. Drilling

3. Boring
 Meaning :boring is an operation to enlarge and
finish holes accurately. This may be done on a
lathe or milling

4. Reaming
Meaning : it is sizing operation that removes a
small amount of metal from a hole already
drilled

5. Tapping
 Meaning : tapping is the process of cutting a
thread inside a hole and also it is sed to make
threads on nuts

6. Counter boring
 Meaning : a counter boring is multi to cutting
tool used for enlarging the top of the previously
machined hole requirement diameter and
depth

7. Counter shink
 Meaning: removing the material from top of the
drilled for in conical shape.

8. Spot face
 Meaning :it is the operation of smoothing and
squaring the surface around at the top or end
of the hole . Spot face is generally done on
casting and forging

9. Chamfering
 Meaning : removing the sharp edges and burs
end of the drill hole in conical shape

10. Drilling
 Meaning : it is operation of producing a
cylindrical hole in the work piece

11. Lathe operations
 There are 14 operations in lathe machine
1. Plane turning 10. grooving
2. Step turning 11. threading
3. Facing 12. taper turning
4. Parting 13. forming
5. Drilling 14. filing and polishing
6. Knurling
7. Reaming
8. Boring
9. Chamfering

12. Plane turning
 Meaning : it is a operation of removing access
amount of material from the surface of
cylindrical job

13. Step turning
 Meaning : it produces various steps of different
diameter

14. Facing
 Meaning :it removes the end of the material at
a flat surface

15. Parting
 Meaning : parting or cutting off is the operation
of cutting away a desired lenth of the work
piece that is dividing the work piece in two or
more parts

16. Drilling
 Meaning : it is the operation of producing a
cylindrical hole in the work piece

17. Reaming
 Meaning :: it is sizing operation that removes a small
amount of metal from a hole already drilled

18. Knurling
 Meaning : It is the process of impressing a
diamond safed or straight line pattern in the
surface of work piece

19. Boring
 Meaning : it process of enlarging a hole
already produced by drilling

20. Grooving
 Meaning : it is act of making groove reduced
diameter in a work piece

21. Threading
 Meaning : it is the act of cutting of the required
forms of threads on the internal or external
cylinder surface

22. Chamfering
 Meaning : it removes the burs sharp edges
and thus makes the handling safe chamfering
can be done by form tool having angle equal
to chamfer

23. Taper turning
 Meaning : it is an operation of producing a
conical surface by gradual reduction in the
diameter of a cylindrical work piece

24. Forming
 Meaning : it is an operation that produces
convex concave or irregular shapes

25. Filing and polishing
 Meaning : the filing is the finishing operation
that burs, sharp corners and feed marks from
the work piece