Consider the following statements with respect to the relief angle of cutting tool:
1. This affects the direction of chip flow.
2. This reduces excessive friction between the tool and workpiece
3. This affects tool life
4. This allows better access of coolant at the tool workpiece interface
Which of the statements given above are correct?

1

and

2

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2

and

3

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2

and

4

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3

and

4

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Solution

The correct option is B $2$ and $3$
For the relief angle of cutting tool:
2. This reduces excessive friction between the tool and workpiece
3. This affects tool life

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The correct option is B 2 and 3For the relief angle of cutting tool: 2. This reduces excessive friction between the tool and workpiece 3. This affects tool life

The correct option is B $2$ and $3$
For the relief angle of cutting tool:
2. This reduces excessive friction between the tool and workpiece
3. This affects tool life