Pre-hole diameter optimization in high speed drilling considering machining cost

Monia Ben Meftah (1) , Maher Baili (2) , Bassem Gassara (1) , Gilles Dessein (2) , Wassila Bouzid Saï (1)

1 Unité de Génie de Production Mécanique et Matériaux - UGPM2 (Sfax, Tunisia)
2 LGP - Laboratoire Génie de Production

In this paper, a new methodology of tool diameter optimization in high-speed peck drilling cycle G83 is investigated in order to predict the pre-drill diameters and cutting speed which lead to the minimum cutting cost. In this aim, a pre-drill diameter modeling is proposed. The cycle time is calculated based on a feed rate modeling which depends on the kinematic performance of the machine. To reach higher precision of the predicted results, an optimization algorithm is developed taking into consideration the technological and machine constraints (machine power, spindle speed, and feed rate). An experimental study is carried out to validate the feed rate modeling and to calculate the value of the specific cutting force of studied material. To demonstrate the procedure, an illustrative example of AISI 4140 workpiece material is discussed in detail. The obtained results show that the economical process of drilling in peck drilling cycle G83 is obtained with the minimum number of pre-drill diameter.

Mots clés: High speed drilling; Pre-drill diameter; Peck drilling cycle G83; Machining time; Machining cost; Optimization

Domaines: Mécanique des matériaux [physics.class-ph]

Monia Ben Meftah, Maher Baili, Bassem Gassara, Gilles Dessein, Wassila Bouzid Saï. Pre-hole diameter optimization in high speed drilling considering machining cost. International Journal of Advanced Manufacturing Technology, 2019, 103 (9-12), pp.3323-3336. ⟨10.1007/s00170-019-03689-z⟩. ⟨hal-02434406⟩