Provided is a linear movable rotary union including a driving shaft comprising a plurality of fluid supply paths; a hollow middle housing surrounding an outside of the driving shaft and comprising a plurality of first through holes in a sidewall; a plurality of first sealing members provided between the middle housing and the driving shaft to prevent leakage of a fluid; a hollow outer housing surrounding an outside of the middle housing and comprising a plurality of second through holes in a sidewall; and a plurality of second sealing members provided between the middle housing and the outer housing to prevent leakage of the fluid, and wherein the driving shaft is installed to be capable of rotational motion in the middle housing, and the middle housing is installed to be capable of reciprocating motion in an axial direction in the outer housing.

A honing machine (100) for honing a bore in a workpiece comprises a support structure (120) fixed to the machine, and at least one honing unit (130) which is mounted on the support structure. The honing unit has a main support (160) which can be mounted fixedly with respect to the support structure and a spindle unit (150) which is supported by the main support and in which a spindle shaft is rotatably mounted, wherein the spindle shaft is rotatable about a spindle axis by means of a rotary drive and, at a tool-side end (153), has a device for the fastening of a honing tool. Furthermore, a linear guide system which is arranged between the main support (160) and the spindle unit (150) for guiding a linear stroke movement of the spindle unit (150) relative to the main support (160) and a stroke drive for generating the stroke movement of the spindle unit (150) are provided. The main support (160) is attached to the support structure (120) in such a manner that a workpiece-close end (166) of the main support lies at a distance above a spindle-facing limit of a workpiece height range. The spindle unit (150) is attached with respect to the linear guide system in such a manner that, in a workpiece-close end position of a stroke movement, the tool-side end (153) of the spindle shaft lies closer to the workpiece height range than the workpiece-near end (166) of the main support (160).

A honing machine (100) for honing a bore in a workpiece comprises a support structure (120) fixed to the machine and at least one honing unit (130) which is mounted on the support structure and which has a main support (160), which can be mounted fixedly in relation to the support structure, and a spindle unit (150), which is supported by the main support and in which a spindle shaft (152) is rotatably mounted, wherein the spindle shaft (152) is rotatable about a spindle axis (155) by means of a rotary drive and, at a tool-side end (153), has a device for the fastening of a honing tool. The honing machine furthermore has a linear guide system which is arranged between the main support (160) and the spindle unit (150) and which serves for guiding a linear stroke movement of the spindle unit (150) relative to the main support (160), a stroke drive for generating the stroke movement of the spindle unit (150), and an alignment system (200) for setting the alignment of the spindle axis (155) in relation to the support structure (120). The alignment system (200) is designed for the continuously variable, reversible setting of the alignment of the spindle axis (155) in relation to the support structure (120), wherein the alignment system is designed for the independent setting of the position of the spindle axis (155) along two mutually perpendicular axes of translation and for the setting of the orientation of the spindle axis (155) in relation to two mutually perpendicular axes of rotation.

Provided is a linear movable rotary union including a driving shaft comprising a plurality of fluid supply paths; a hollow middle housing surrounding an outside of the driving shaft and comprising a plurality of first through holes in a sidewall; a plurality of first sealing members provided between the middle housing and the driving shaft to prevent leakage of a fluid; a hollow outer housing surrounding an outside of the middle housing and comprising a plurality of second through holes in a sidewall; and a plurality of second sealing members provided between the middle housing and the outer housing to prevent leakage of the fluid, and wherein the driving shaft is installed to be capable of rotational motion in the middle housing, and the middle housing is installed to be capable of reciprocating motion in an axial direction in the outer housing.

The invention relates to a method for fine machining a cylindrical workpiece surface of a workpiece blank by means of a fine machining tool. Said method comprising the following steps: generating a relative rotational movement between a tool and a workpiece blank about a machining axis which is concentric to a cylindrical workpiece surface of the workpiece blank; generating a relative feed rate between the tool and the workpiece blank along the machining axis; detecting an actual value of a process variable which is a function of a relative force between the tool and the workpiece blank and which can assume a plurality of process variable values; and continuously controlling the process variable by changing the relative feed rate in such a way that the more the relative feed rate changes, the more the actual value of the process variable deviates from a desired value of the process variable.

In the case of a honing method for machining the internal face (214) of a bore (210) in a workpiece (200) with the aid of at least one honing operation, during a honing operation a flaring-capable honing tool (150) that is coupled to a spindle is moved back and forth within the bore for generating a reciprocating movement in the axial direction of the bore, and are simultaneously rotated for generating a rotating movement that superimposes the reciprocating movement. A bore shape having an axial contour profile which is rotationally symmetrical in terms of a bore axis (212) and deviates from the circular cylindrical shape is generated herein. For generating an axially variable material removal in at least one stroke modification phase a stroke length and/or a stroke orientation of the reciprocating movement is modified. A honing tool (150) which has an annular cutting group (155) having a plurality of radially actuatable cutting material members (156) that are distributed about the circumference of the tool body (152) is used herein. The honing method is distinguished in that during the stroke modification phase a measurement of the actual diameter of the bore (210) is carried out for determining a diameter measurement signal which represents the actual diameter of the bore in a measurement plane, and the stroke length and/or the stroke orientation of the reciprocating movement is controlled as a function of the diameter measurement signal. Also described is a machine tool that is suitable for carrying out the honing method. The honing method is particularly suitable for honing cylinder running faces in the production of cylinder blocks or cylinder liners for reciprocating piston engines.

Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement.

A honing machine (100) for honing a bore in a workpiece comprises a support structure (120) fixed to the machine and at least one honing unit (130) which is mounted on the support structure and which has a main support (160), which can be mounted fixedly in relation to the support structure, and a spindle unit (150), which is supported by the main support and in which a spindle shaft (152) is rotatably mounted, wherein the spindle shaft (152) is rotatable about a spindle axis (155) by means of a rotary drive and, at a tool-side end (153), has a device for the fastening of a honing tool. The honing machine furthermore has a linear guide system which is arranged between the main support (160) and the spindle unit (150) and which serves for guiding a linear stroke movement of the spindle unit (150) relative to the main support (160), a stroke drive for generating the stroke movement of the spindle unit (150), and an alignment system (200) for setting the alignment of the spindle axis (155) in relation to the support structure (120). The alignment system (200) is designed for the continuously variable, reversible setting of the alignment of the spindle axis (155) in relation to the support structure (120), wherein the alignment system is designed for the independent setting of the position of the spindle axis (155) along two mutually perpendicular axes of translation and for the setting of the orientation of the spindle axis (155) in relation to two mutually perpendicular axes of rotation.

A honing machine (100) for carrying out honing operations on boreholes, oriented orthogonally with respect to one another, in a workpiece (102), in particular for honing processing of cylinder boreholes and a bearing gate borehole in a cylinder crank casing, comprises a machine base (110) and a round table (130) which is arranged on the machine base and which can rotate about a vertical round table axis (134) and has a plurality of workpiece receptacles which are arranged offset with respect to one another in a circumferential direction at a radial distance from the round table axis, in such a way that a workpiece which is held in a workpiece receptacle can be transported successively to different workstations (140, 150, 160, 170) of the honing machine by rotating the round table. At least one of the workstations is a vertical honing station (150, 170) which has at least one vertical honing unit (180) which has a honing spindle which can move back and forth in the direction of a spindle axis which is oriented parallel to the round table axis, rotatably about said spindle axis. Furthermore, at least one of the workstations is a horizontal honing station (160) which has at least one horizontal honing unit (300) which has a honing spindle which can move back and forth in the direction of a horizontal spindle axis (304), rotatable about said spindle axis. The horizontal honing unit (300) is or can be positioned with respect to the round table (130) in such a way that the horizontal honing unit assumes a processing position in which the horizontal spindle axis (304) is oriented radially with respect to the round table axis (134).

A honing tool (1) for honing a cylindrical external surface (2) of a rod (3). The tool comprises a plurality of honing inserts (4), adapted to hone a metal, and a support (5) for the honing inserts. The inserts (4) are carried by the support (5) and define a passage (6) around which the inserts (4) are to be found and in which the cylindrical external surface (2) of the rod (3) is insertable. The tool (1) includes a plurality of sliding skids (7) carried by the support (5), the sliding skids (7) and the honing inserts (4) being arranged to be capable of coming simultaneously into contact against the cylindrical external surface (2) of the rod (3) when the rod is placed inside the passage (6) and so as to be able to center the cylindrical external surface (2) inside the passage (6).