Spindle structure

摘要

The broaching tool comprises a first element constituted by a tubular wall (2)) and a channel (6). A second element (8) connected to one of the first element ends (4,5) constitutes a broach nose. A third element (9) around the first constitutes a rotational guide relative to a fourth element (10) forming a connection between the tool and a support (11). A fifth element (12) located around the first element constitutes a rotational drive. The fifth element is itself constituted around a sixth long part (13) drilled with an axial channel (14). The axial channel has an internal diameter (D1) greater than the external diameter of the first element so that the long part can be engaged on the first element. At least one of the elements is fitted with a seventh element (16) whose function is to ensure rotational coupling of the first and sixth elements.