Abstract: An orbital drilling tool unit configured to be detachably mounted to a rotatable spindle of a stationary machine tool. The tool unit comprises an outer eccentric body having an eccentric, longitudinally extending cylindrical hole, an inner eccentric body rotatably supported in the eccentric hole of the outer eccentric body and having likewise an eccentric, longitudinally extending cylindrical hole, a spindle motor for detachably supporting a cutting tool and rotatably supported in the eccentric hole of the inner eccentric body. The machine tool end of the outer eccentric body is configured to be concentrically mounted to a tool holder attached to the machine tool spindle for rotating the outer eccentric body.

Abstract: A fixation device for fixating a portable drilling machine to a drill template, comprising a housing having a distal end holding a clamping mechanism configured to detachably fixate the housing onto two locating pins attached to and projecting from a drill template diametrically opposed to each of a plurality of guide holes therein. The clamping mechanism includes a support member having two diametrically opposed recesses for receiving the respective locating pins therein. Axial end surface portions of the support member are configured to engage an opposing surface of the template when the fixation device is attached to the locating pins. A sleeve-shaped piston is rotatable and axially movable in a cylinder within the support member. A distal end of the piston has two helical cams with wedge surfaces configured to come into engagement with a respective undercut cam surface of each locating pin upon rotating and axially displacing the piston.

Abstract: A fixation device (10) for fixating a portable orbital drilling machine to a drilling template (20), comprising a housing assembly (12, 50, 54, 56, 58) configured to be detachably secured to the drilling machine; distal locking members (16) projecting from a housing body (12) of said assembly and configured to receive corresponding locating pins (18) fixated to the template (20) at a distance from a template hole (22).