Abstract: This machine includes a casing (2), a tool-holder spindle (4), a motor (6), a drive mechanism (12) having positive feed which mechanically connects the motor to the spindle and which includes a first drive member (32) for rotating the spindle, a second drive member (34) for driving the spindle in translation and which is screwed onto the spindle (4) in order to advance or return the spindle, and a clutch (36) having a return configuration which disengages the second member and the motor and an advance configuration which engages them. The clutch includes a rotary engagement member (44), a first key (48) which is movable between a position for connecting the rotary member to the motor and a position for disengaging the rotary member, and a second key (50) which is movable between a position for connecting the rotary member to the casing and a position for disengaging the rotary member.

Abstract: In this process for drilling a bore (61), a drilling tool (11) is driven simultaneously in rotation about an axis (A) and in translation along the axis (A) in accordance with an advance movement. The advance movement is combined with an oscillating movement of the drilling tool (11) along the axis (A) of an amplitude sufficient to break up the swarf formed, while at the same time keeping the drilling tool (11) in the bore (61) which is in the process of being drilled. In certain exemplary embodiments, the application may be relevant to the aircraft construction industry.

Abstract: This processing machine comprises a casing (4), a tool-holder spindle (6) which is to carry a machine tool, a positive feed drive mechanism for the spindle (6), which mechanism is suitable for driving the spindle (6) simultaneously in rotation and in translation relative to the casing (4) in accordance with an advance or return movement, and a system (12) for lubricating the machine tool, comprising a lubricant inlet (40), a lubricant duct (42) delimited by the spindle (6), the lubricant duct (42) opening out at an end of the spindle (6) carrying the machine tool, in order to supply the machine tool (7) with lubricant, and a lubricant-admission module (44) connecting the lubricant inlet (40) to the said lubricant duct (42). The lubricant-admission module (44) forms a lubricant pump drawing in the lubricant from the lubricant inlet (40) and supplying the lubricant duct (42) of the spindle (6), the advance and return of the spindle (6) activating the pumping of lubricant by the admission module (44).

Abstract: The present invention describes a machine to that includes a casing and a toolholder spindle. The machine tool further includes a drive mechanism that drives the toolholder spindle. The drive mechanism includes first and second drive members. The first drive member rotates the spindle about its axis. The second drive member translates the spindle and is screwed onto the spindle in such a way that the spindle advances or reverses as a function of the relative speed of rotation between the first and second drive members. The machine tool also includes a first motor and a second motor. The first motor rotates the first drive member and the second motor rotates the second drive member. The machine too further includes a control unit that controls and adjusts the speed of rotation of the first motor and the second motor independently.

Abstract: A tool, such as a pneumatic tool, includes a casing, tool-holder spindle extending along an axis, and a drive mechanism for the tool-holder spindle. The mechanism uses a first member for driving the spindle in rotation about its axis and a second member for driving the spindle in translation along its axis. The second drive member is screwed onto a threaded portion of the spindle so that the spindle advances or returns as a function of the relative rate of rotation of the drive members. The second drive member is displaced along the axis between an advanced position and a returned position.

Abstract: This processing machine comprises a casing (4), a tool-holder spindle (6) which is to carry a machine tool, a positive feed drive mechanism for the spindle (6), which mechanism is suitable for driving the spindle (6) simultaneously in rotation and in translation relative to the casing (4) in accordance with an advance or return movement, and a system (12) for lubricating the machine tool, comprising a lubricant inlet (40), a lubricant duct (42) delimited by the spindle (6), the lubricant duct (42) opening out at an end of the spindle (6) carrying the machine tool, in order to supply the machine tool (7) with lubricant, and a lubricant-admission module (44) connecting the lubricant inlet (40) to the said lubricant duct (42). The lubricant-admission module (44) forms a lubricant pump drawing in the lubricant from the lubricant inlet (40) and supplying the lubricant duct (42) of the spindle (6), the advance and return of the spindle (6) activating the pumping of lubricant by the admission module (44).

Abstract: This machine includes a casing (2), a tool-holder spindle (4), a motor (6), a drive mechanism (12) having positive feed which mechanically connects the motor to the spindle and which includes a first drive member (32) for rotating the spindle, a second drive member (34) for driving the spindle in translation and which is screwed onto the spindle (4) in order to advance or return the spindle, and a clutch (36) having a return configuration which disengages the second member and the motor and an advance configuration which engages them. The clutch includes a rotary engagement member (44), a first key (48) which is movable between a position for connecting the rotary member to the motor and a position for disengaging the rotary member, and a second key (50) which is movable between a position for connecting the rotary member to the casing and a position for disengaging the rotary member.

Abstract: In this process for drilling a bore (61), a drilling tool (11) is driven simultaneously in rotation about an axis (A) and in translation along the axis (A) in accordance with an advance movement. The advance movement is combined with an oscillating movement of the drilling tool (11) along the axis (A) of an amplitude sufficient to break up the swarf formed, while at the same time keeping the drilling tool (11) in the bore (61) which is in the process of being drilled. In certain exemplary embodiments, the application may be relevant to the aircraft construction industry.

Abstract: A tool, such as a pneumatic tool, includes a casing, tool-holder spindle extending along an axis, and a drive mechanism for the tool-holder spindle. The mechanism uses a first member for driving the spindle in rotation about its axis and a second member for driving the spindle in translation along its axis. The second drive member is screwed onto a threaded portion of the spindle so that the spindle advances or returns as a function of the relative rate of rotation of the drive members. The second drive member is displaced along the axis between an advanced position and a returned position.

Abstract: The present invention describes a machine to that includes a casing and a toolholder spindle. The machine tool further includes a drive mechanism that drives the toolholder spindle. The drive mechanism includes first and second drive members. The first drive member rotates the spindle about its axis. The second drive member translates the spindle and is screwed onto the spindle in such a way that the spindle advances or reverses as a function of the relative speed of rotation between the first and second drive members. The machine tool also includes a first motor and a second motor. The first motor rotates the first drive member and the second motor rotates the second drive member. The machine too further includes a control unit that controls and adjusts the speed of rotation of the first motor and the second motor independently.

Abstract: This tool comprises: a casing (3), a tool-holder spindle (5) extending along an axis (A), a drive mechanism (9) for the tool-holder spindle, the mechanism comprising: a first member (21) for driving the spindle (5) in rotation about its axis, a second member (35) for driving the spindle in translation along its axis, the second drive member being screwed onto a threaded portion of the spindle (5) so that the spindle (5) advances or returns along the axis (A) as a function of the relative rate of rotation of the drive members (21, 35). The tool comprises means (37) for displacing the second drive member (35) relative to the casing (3) along the axis (A) between an advanced position and a returned position. Application, for example, to pneumatic drilling tools.