Cutting mechanics classification: drilling as a cutting operation Drilling with a twist drill is classified under which cutting mode? Choose the correct option.
Mechanical Engineering
Production Engineering
Difficulty: Easy
Choose an option
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AOrthogonal cutting
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BOblique cutting
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CSimple cutting
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DUniform cutting
Answer
Correct Answer: Oblique cutting
Explanation
ConceptOrthogonal cutting assumes a straight cutting edge perpendicular to cutting velocity. Drilling uses a helical cutting edge with inclination; chip flow is not in a plane normal to the cutting edge → it is oblique cutting.
Final AnswerOblique cutting.