Drilling head with axial vibrations

Details Drilling head with axial vibrations Drilling head with axial vibrations

B - Operations, Transporting

23

B

B23B 29/12 (2006.01) B23B 37/00 (2006.01) B23B 47/34 (2006.01)

Patent

CA 2760063

The invention relates to a drilling head (1) with an axial oscillation generator, comprising a mounting (2) for coupling the head to a motor for rotating the mounting about an axis, the mounting (2) having a longitudinal axis (5) coinciding with the axis of rotation of the motor, a tool holder (3), an elastically deformable means (6) for retaining the tool holder (3) in the mounting (2) and a means (7) for guiding the tool holder (3) in the mounting (2) along the longitudinal axis (5) of said mounting, wherein the mounting of the drilling head includes a controlled generator (8) of reciprocating movements in the direction of the aforementioned axis (5) positioned between the mounting (2) and the tool holder (3), the tool holder and the generator being connected by a longitudinal coupling member (9) suitable for damping the impacts withstood by the tool holder (3) while enabling the transmission of the reciprocating movements.

L'invention concerne une tête de perçage (1) à générateur d'oscillations axiales, comportant un support (2) d'accouplement de la tête à un moteur d'entraînement en rotation du support autour d'un axe, le support (2) possédant un axe longitudinal (5) en coïncidence avec l'axe de rotation du moteur, un porte-outil (3), des moyens de suspension (6) élastiquement déformables du porte-outil (3) au support (2) et des moyens de guidage (7) du porte-outil (3) dans le support (2), le long de l'axe longitudinal (5) de ce support, dans laquelle tête de perçage le support comprend un générateur (8) commandé de mouvements alternatifs dans la direction de l'axe (5) susdit, interposé entre le support (2) et le porte-outil (3), la liaison entre le porte-outil et le générateur étant réalisée au moyen d'un organe (9) d'accouplement longitudinal ayant des propriétés d'amortissement des chocs encaissés par le porte-outil (3) tout en autorisant la transmission des mouvements alternatifs.

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