According to one implementation, a tool feeding mechanism for a handheld tool rotating device, having a holder and a first air motor, includes a coupler, a fixing member, a moving mechanism and a second air motor. The holder chucks and holds a rotating tool. The first air motor rotates the holder. The tool feeding mechanism is attached to the tool rotating device. The coupler is attached to the tool rotating device. The fixing member is attached directly or indirectly to a workpiece of hole processing using the rotating tool. The moving mechanism moves the coupler relatively to the fixing member in a tool axis direction. The second air motor powers the moving mechanism.

A machining centre is disclosed (1) comprising a machining plane (P), a subtractive unit (2) for performing chip removal on a workpiece positioned on the machining plane (P); the subtractive unit (2) comprising a first carriage (12) that is slidably parallel to an operating axis (Y). The machining centre (1) further comprises an additive unit (3) arranged to perform machining by additive production techniques on the machining plane (P), the additive unit (3) comprises a second carriage (20) that is slidable along the operating axis (Y). The additive unit (3) is provided with a first coupling portion and said subtractive unit (2) is provided with a second coupling portion couplable with the first coupling portion. In one step, the subtractive unit adopts a pick-up configuration in which the first coupling portion is coupled with the second coupling portion to connect the subtractive unit (2) to the additive unit (3) at least along the operating axis (Y). In the pick-up configuration, the subtractive unit (2), connected to the additive unit (3), is configured to move the additive unit (3) at least parallel to the operating axis (Y). A method is further disclosed that is actuated in this machining centre (1), to pick up and move the additive unit (3) at least along one operating axis (Y).

A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, and a pivoting feed mechanism coupled to the gear box housing to move a spindle for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can also be used in other drilling assemblies.

A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, and a pivoting feed mechanism coupled to the gear box housing to move a spindle for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can also be used in other drilling assemblies.

The invention relates to a milling machine (10), having a milling spindle (12) and a workpiece holder (24) which is mounted so as to move with respect to the milling spindle (12) in at least 3 or 4 spatial directions, having a workpiece which is held in a clamped manner on the workpiece holder (24), having a sensor, relative to which the workpiece can be brought into contact and relative to which workpiece the sensor can be moved to sense the workpiece, wherein the sensor is designed as a sensing probe (18), having a deflection and detection of a deflection of its sensing element (30) in at least 1 spatial direction, or in 2 or 3 spatial directions.

The invention relates to a milling machine (10), having a milling spindle (12) and a workpiece holder (24) which is mounted so as to move with respect to the milling spindle (12) in at least 3 or 4 spatial directions, having a workpiece which is held in a clamped manner on the workpiece holder (24), having a sensor, relative to which the workpiece can be brought into contact and relative to which workpiece the sensor can be moved to sense the workpiece, wherein the sensor is designed as a sensing probe (18), having a deflection and detection of a deflection of its sensing element (30) in at least 1 spatial direction, or in 2 or 3 spatial directions.

A rail drill drive train can include a common drive end between a single drive motor and a common gear. A speed train end can extend from the common gear to rotate the drill spindle. A feed train end can independently extend from the common gear to advance and retract the drill spindle. The speed train end can include a sprag gear so that, without unmeshing any gears, the drill spindle is not unnecessarily rotated in the reverse direction when the drive motor is reversed to retract the drill spindle. A rail drill control circuit and related sensors can enable automatic operation throughout the complete drilling cycle without any manual input from the user other than starting the cycle. Such a fully automatic drilling cycle can minimize overall cycle time to preserve battery life and can free the user to perform other tasks between drill moving and clamping operations.

A turret tool holder includes an engagement means having engaging elements on a turret side and a support base side, a clutch member for transmitting a driving power to a turret drive section, and a moving mechanism. The moving mechanism includes a rotatably supported drive shaft, a first feed screw mechanism and a second feed screw mechanism rotatable in response to the rotational drive of the drive shaft for moving the clutch member and the engagement elements, and a coordination mechanism arranged between the drive shaft and the first feed screw mechanism or the second feed screw mechanism, for moving the engaging elements in response to the rotational drive of the drive shaft, with a feed amount smaller than the feed amount of the clutch member.

A fastening device is equipped with a stocker. The stocker has a circular arcuate shape which is curved in a horizontal plane, and accommodates fastening tools in a state of being aligned in a row. The fastening tool that is positioned at a most downstream side of the stocker is supplied to the receiving site by an unloading and supplying device. Furthermore, the fastening tool supplied to the receiving site is screw-rotated by a screw-rotating device that is displaced toward the fastening tool.

A fastening device is equipped with a stocker. The stocker has a circular arcuate shape which is curved in a horizontal plane, and accommodates fastening tools in a state of being aligned in a row. The fastening tool that is positioned at a most downstream side of the stocker is supplied to the receiving site by an unloading and supplying device. Furthermore, the fastening tool supplied to the receiving site is screw-rotated by a screw-rotating device that is displaced toward the fastening tool.