Question
Download Solution PDFThe tolerance grade which can be obtained economically by grinding process is ______
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- The tolerance values are indicated by 18 numbers and are written as IT01, IT0, IT1, IT2,…., IT16. These 18 values refer to 18 grades of work.
- Table lists the machining operations which produce grades IT4 to IT16.
|
Machining operation |
Tolerance grade |
|
Lapping and Honing |
IT4 |
|
Machine lapping, fine grinding |
IT5 |
|
Grinding, fine honing |
IT6 |
|
High quality turning, broaching |
IT7 |
|
Center lathe turning |
IT8 |
|
Automatic lathe work |
IT9 |
|
Milling, extruding |
IT10 |
|
Drilling, rough turning |
IT11 |
|
Light press work, precision tube drawing |
IT12 |
|
Press work |
IT13 |
|
Die casting |
IT14 |
|
Stamping |
IT15 |
|
Sand casting, flame cutting |
IT16 |
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