Comparison of Machining Processes

Comparison of different machining processes (boring, drilling, shaping, planning, turning and milling) in aspects of advantages and limitations.

S.No
Machining Process
 Advantages
Limitations
1 Boring All types of material can be bored.
Variety of internal circular profiles can be obtained.
Low tooling cost.
Large components can be bored.
Provides better dimensional control and surface finish.
Boring requires skilled labour.
Low production rate in boring machining operation..
suitable for internal profiles only.
Stiffness of boring bar is an important consideration.
2 Drilling Drilling operation is inexpensive tooling and equipment.
Most suitable for producing round holes of various sizes.
High production rate.
Machine can be used for reaming and tapping.
Drilling operation requires semi-skilled labour.
basically a rough machining operation.
3 Shaping Shaping operation is suitable for production flat and contour profiles on small workpieces.
Suitable for low production rate.
Low tooling and equipment cost.
Shaping operation requires skilled labour.
Large size workpieces cannot be obtained through shaping.
Only simple profiles can be obtained.
Close tolerance and fine finish cannot be obtained.
4 Planning Suitable for producing flat and encounter profiles on large workpieces.
Suitable for low production rate.
Low tooling cost for performing planning operation.
Planning operation requires skilled labour.
Only simple profiles can be obtained.
Close tolerance and fine finish cannot be obtained in planning operation.
5 Turning All types of materials can be turned.
Most versatile machine capable of producing external and internal circular profile and flat surfaces.
Low tooling cost.
Large components can be turned
Turning operation requires skilled labour.
Low production rate in turning machining operation.
Close tolerances and surface finish cannot be achieved.
6 Milling Variety of shapes including flats, slots and contours can be obtained through milling operation.
Versatile operation with wide variety of toolings and attachments.
Suitable for low and medium production rate.
Better dimensional control and surface finish.
Milling operation requires skilled labour.
Tooling relatively more expansion.
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