Comparison of various 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 labor.
- Low production rate in a boring machining operation.
- Suitable for internal profiles only.
- The 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.
- The machine can be used for reaming and tapping.
|
- Drilling operation requires semi-skilled labor.
- 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 labor.
- 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.
- A 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 a 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.
|