Device for producing deep-hole borings in workpieces having...

Details Device for producing deep-hole borings in workpieces having... Device for producing deep-hole borings in workpieces having...

B - Operations, Transporting

23

B

B23B 49/02 (2006.01) B23B 41/02 (2006.01)

Patent

CA 2415365

The drill bit (14) passes through a drilling bush (22) for guiding said drill bit. The drilling bush (22) is pressed against the workpiece (10). However, the drilling bush does not terminate flush with the workpiece, but comprises a linear supporting edge (28) that overlaps the apex of the curvature of the workpiece. This prevents the drilling bush from sliding off a curvature of the workpiece surface.

Selon la présente invention, l'outil de perçage (14) s'étend à travers un guide de perçage (22) servant à guider l'outil de perçage. Le guide de perçage (22) est comprimé contre la pièce à usiner (10). Ledit guide de perçage ne vient cependant pas à fleur avec la pièce à usiner, mais présente une arête d'appui linéaire (28) qui recouvre le sommet de l'arrondi de la pièce à usiner. Cela permet d'éviter le glissement du guide de perçage au niveau de l'arrondi de la surface de la pièce à usiner.

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