A device and method for carrying out a cylindrical bore having its axis parallel to a preexisting cylindrical bore and partially intersecting the same

摘要

A device to perform in a metallic body (22) a cylindrical bore parallel to, and intersecting, a pre-existent cylindrical bore (25), comprises a supporting element (1) connected to a drilling tool (5) and capable of being slidingly inserted into the pre-existent bore (25) to guide the drilling tool along a direction that is parallel to the axis of the pre-existent bore.;A method is also envisaged comprising the execution of a first cylindrical bore (25) and then the execution of a second cylindrical bore using a tool (9) axially guided by means of a device (1) sliding within the first bore (25).