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If the value of rake angle is a large positive value, then:
  • a)
    material is not deformed
  • b)
    material is forced back to itself
  • c)
    material is deformed less in the chip
  • d)
    material is deformed more in the chip
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If the value of rake angle is a large positive value, then:a)material...
Rake angle is an important parameter for the surface finish of the product. Rake angle decides the cutting forces and power needed for cutting a soft and hard material.
A positive rake angle is used for cutting soft and ductile material.
A negative rake angle is used for cutting very hard or brittle material.
A zero rake angle is used for machining brass material.
A higher cutting force is required at a low positive rake angle, but with the increase of positive rake angle, a lesser amount of cutting forces and power is required, which gives a better surface finish. But the tool becomes thin and weak.
Thus, a hard material deforms less in the chip at a higher positive rake angle as the tool loses strength.
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If the value of rake angle is a large positive value, then:a)material is not deformedb)material is forced back to itselfc)material is deformed less in the chipd)material is deformed more in the chipCorrect answer is option 'C'. Can you explain this answer?
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