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.

The pneumatic drill has member defining an air input and an air output and a housing defining an internal cylindrical chamber having bearing surfaces having a through axis. A driven shaft is coupled to the tool engaging chuck that defines a plurality of longitudinal slots. The driven shaft is disposed within the chamber and has a longitudinal axis offset from the through axis. A plurality of vanes each being partially formed of graphite that are individually disposed within one of the plurality's of longitudinal slots. Two of the vanes, the housing, and the driven shaft define a moving compression chamber.

An oxygen sensor socket kit provides an air impact driver and at least one slotted socket forming an annulus forming an inside surface with a plurality rectangular flats parallel to and symmetrically arranged around a central axis. The slot is slot formed through the socket sidewall positioned in place of one or a portion of one of the rectangular flats. An outer surface incorporates at least one radially offset protrusion forming a wing body and having a planar striking surface that lies along a radial projection from the central axis on a plane that intersects central axis. A striking surface forms one or more recesses of a concave shape to receive in a rounded tool tip an air impact driver. The driver has an offset distal portion having an angular offset sufficient to allow a direction of an impact force directly laterally offset from a centerline of the output shaft.

An oxygen sensor socket kit provides an air impact driver and at least one slotted socket forming an annulus forming an inside surface with a plurality rectangular flats parallel to and symmetrically arranged around a central axis. The slot is slot formed through the socket sidewall positioned in place of one or a portion of one of the rectangular flats. An outer surface incorporates at least one radially offset protrusion forming a wing body and having a planar striking surface that lies along a radial projection from the central axis on a plane that intersects central axis. A striking surface forms one or more recesses of a concave shape to receive in a rounded tool tip an air impact driver. The driver has an offset distal portion having an angular offset sufficient to allow a direction of an impact force directly laterally offset from a centerline of the output shaft.

A drill including a drill spindle capable of driving a cutting tool in movement. The drill has at least one channel for distributing a lubricant to the cutting tool, a pump to supply the channel with lubricant and control element(s) for controlling the flow rate of the pump. Such a drill further has mechanical element(s) for determining at least one piece of information representing the torque exerted on the spindle along its axis during drilling. The control element(s) act on the flow rate of the pump as a function of the torque exerted on the spindle along its axis during drilling.

A pneumatic tool including a gun body, a rotating valve, a valve bushing and a trigger set is provided. The rotating valve is disposed at the gun body and includes at least one opening. The valve bushing sleeves the rotating valve and includes two ports. The trigger set is operably disposed at the gun body and is operably coupled to the rotating valve. A rotation of the trigger set causes the rotating valve to rotate to a first position relative to the valve bushing such that the at least one opening of the rotating valve is aligned to one of the two ports, and the rotation of the trigger set causes the rotating valve to rotate to a second position relative to the valve bushing such that the at least one opening of the rotating valve is aligned to the other one of the two ports.

A pneumatic tool including a gun body, a rotating valve, a valve bushing and a trigger set is provided. The rotating valve is disposed at the gun body and includes at least one opening. The valve bushing sleeves the rotating valve and includes two ports. The trigger set is operably disposed at the gun body and is operably coupled to the rotating valve. A rotation of the trigger set causes the rotating valve to rotate to a first position relative to the valve bushing such that the at least one opening of the rotating valve is aligned to one of the two ports, and the rotation of the trigger set causes the rotating valve to rotate to a second position relative to the valve bushing such that the at least one opening of the rotating valve is aligned to the other one of the two ports.

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.

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.

An automatic drilling machine for simultaneously drilling at least two holes through a surface of a crosspiece. The machine comprises an automatic drilling unit having at least two tool holders, each one adapted for receiving a drilling tool. The automatic drilling unit has a cross-shaped channel configured to receive, at least partially, the crosspiece to be drilled inside the automatic drilling unit with. The tool holders are arranged, such as, when the drilling machine is mounted with the crosspiece to be drilled, the tool holders are positioned in accordance with the locations of the crosspiece where a hole is to be drilled.