Cameroon Baccalauréat Série F1 Practice Questions - Cameroon Baccalauréat Technique Série F1 (Fabrication Mécanique) Exam

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In process planning (gamme d'usinage), why are roughing operations (ébauche) systematically grouped into separate early phases prior to finishing operations (finition)?

To release internal residual stresses and prevent cutting heat and clamping deformation from spoiling final dimensional and surface accuracy To allow the machine operator to change the spindle motor between operations Because cutting fluids cannot be used during roughing operations To ensure that finishing tools wear out at the exact same rate as roughing inserts

Correct Answer:

To release internal residual stresses and prevent cutting heat and clamping deformation from spoiling final dimensional and surface accuracy

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