Tool turret
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- KOLIBRI BETEILIGUNG GMBH
- Filing Date
- 2024-07-23
- Publication Date
- 2026-07-01
Smart Images
Figure EP2024070885_27022025_PF_FP_ABST
Abstract
Description
[0001] tool turret
[0002] The invention relates to a tool turret with a base body to be attached or is attached to a machine tool, which has a turret axis around which a tool disk is rotatably mounted on the base body by means of a drive, said tool disk having a plurality of tool stations distributed around its circumference, which can each be brought into at least one working position by rotating the tool disk and subsequently fixing the same, in which a tool drive located inside the tool disk and drivable by means of a gear train, with its drive-side coupling part, engages with a tool-side coupling part for driving a tool located at the tool station aligned with the working position, wherein the gear train for the tool drive has a gear in a gear chamber within the tool disk and a further gear in the further gear chamber within the base body,which can be coupled to the drive, wherein both gears are connected to each other via an operative connection, and wherein the individual gears are supplied with lubricant in their gear chambers by means of at least one lubrication device. Tool turrets of this type are state of the art (DE 10 2007 043 775 AI) and are regularly a component of complex machine tools. The tool disk, which can be pivoted about a turret axis, has tool stations arranged at equal angular intervals around the circumference, which can each be brought into at least one working position by rotating the tool disk. The tool stations, for example twelve in number, have a tool holder for machining tools, which are in particular rotating tools for machining workpieces, for example drilling and milling tools. The stand part, on which the tool disk is mounted so as to be rotatable about the turret axis,In addition to a base body, it has a pivot drive for the tool disc mounted on a bearing plate and a drive motor mounted on a motor plate, which, via a gear housing part mounted on the base body, forms a rotary drive for a rotating machining tool, which is located in the respective tool holder of the tool disc aligned with the working position and comes into coupling engagement with the respective machining tool via a coupling device located in the gear housing part.
[0003] DE 10 2015 003 878 A1 discloses such a tool turret, comprising a tool disk that can be pivoted into selective positions relative to a column part. The column part comprises at least a housing base, a gear housing part, and a bearing and motor plate. At least the base, the gear housing part, and the bearing and motor plates are combined in a single, space-saving housing. However, a modular design is also possible.
[0004] The gear trains of such tool turrets are usually equipped with a lubrication device. In the simplest case, a gear chamber for the gear is permanently filled with lubricating grease. The friction partners of the gear train then run in the grease and are lubricated by it. The lubricating grease is distributed by adhesion to the friction partners, with the lubricating filling being introduced by means of the lubrication device during assembly and, in particular, only after delivery to the respective customer. The grease thus provides a one-time, permanent filling of the gear chamber of the tool turret and is only replaced if necessary in the event of repair. For this purpose, the gear chamber is then completely sealed, preventing any unintentional leakage of grease.Grease lubrication can be implemented cost-effectively in this way. However, grease is often difficult to work, resulting in unwanted high work and thus high heat input in the gear train. However, high heat input, in turn, reduces the service life of the lubricant and thus the duty cycle of the tool turret, as well as uniform heat transfer between the tool turret components, which can lead to unwanted material stresses. Therefore, grease lubrication is usually only used at low speeds.
[0005] DE 10 2008 045 181 B3 discloses a tool turret with a base body which is to be attached or is attached to a machine tool and which defines a turret axis about which a tool disk is rotatably mounted on the base body, said tool disk having a plurality of tool stations distributed around its circumference which can each be adjusted into at least one working position by rotating the tool disk, in which position a tool drive located inside the tool disk with its output-side gear part which can be rotated about an axis of rotation radial to the turret axis comes into coupling engagement with a tool-side coupling part for driving at least one tool which is located at the tool station aligned with the working position, wherein the output-side gear part is arranged in the tool disk so as to be pivotable about the turret axis.Furthermore, a switching clutch is present in the tool disk, which can be switched between a first switching position, in which the output-side gear part is connected to the tool disk for a pivoting movement about the turret axis, into a second switching position in which the output-side gear part is decoupled from the tool disk.
[0006] In addition to the grease lubrication already mentioned, other lubricating media can also be introduced using the corresponding lubrication system, such as lubricating oils, for example, to implement oil sump lubrication, oil-air lubrication, or oil mist lubrication. However, the known lubrication system only ever provides one type of lubrication for the friction partners of one or more gear trains.
[0007] Based on this prior art, the invention is therefore based on the object of improving the lubrication of a tool turret, particularly in the form of a disk-type tool turret, and in particular of being able to adapt the lubrication to different requirements. This object is achieved by a tool turret having the features of patent claim 1 in its entirety.
[0008] According to the invention, to achieve this object, the lubrication device comprises at least two separate lubricant inlets, each connected to a gear chamber of an associated gear unit in such a way that the respective gear unit can be optionally supplied with the same or different lubricants in the inlet, and at least one lubricant outlet opens into one of the gear chambers, into which lubricant flows from both gear units in the return flow. This creates a variable lubrication option that can be readily used in all types of tool-driven tool turrets, if necessary, even as part of a retrofit.
[0009] This means that with just one lubrication device and the associated lubricant inlets or connections, a wide variety of lubrication types can be implemented, for example in the form of a
[0010] Grease lubrication,
[0011] Oil sump lubrication,
[0012] Oil-air lubrication, or
[0013] Oil mist lubrication.
[0014] For example, a tool turret subject to low stress, for example, when operated only at low speeds, can have a gear chamber greased with a suitable lubricating grease via one lubricant inlet. For higher stresses on the same tool turret, for example, when operated at higher speeds or with alternating loads, another gear chamber can be oil-lubricated via a different lubricant inlet, which is spatially separated from the grease inlet. Experience has shown that an oil sump created by conventional oil lubrication can be moderately easily worked, resulting in only moderate friction and moderate heat input. The decision regarding the lubricant to be used is generally made on-site at the customer's site prior to commissioning.A subsequent change of the lubricating medium is possible, but in practice would involve disassembly and cleaning work, especially if you want to change from grease to oil lubrication.
[0015] For tool turret solutions subject to even greater operational stress, oil-air lubrication or oil mist lubrication can be implemented using differently designed lubrication systems, which are always different from a grease lubrication system. Especially with oil mist lubrication, this lubricant can be easily worked, resulting in almost no friction, and thus only a very low heat input into the friction or gear components of the respective gear train used.
[0016] This switching between lubricant options in a tool turret with only one lubrication device has no equivalent in the state of the art. Typically, just one lubricant outlet is sufficient to drain the various lubricants, except for the high-viscosity grease that requires intensive lubricating, from the respective tool turret's gearbox to the outside during maintenance or replacement. A type of circulating lubrication for the tool turret can also be implemented via the inlets and outlets if necessary.If several separate gears are used, for example, one gear for the swivel drive of the tool disk and at least one further drive for driving a machining tool that is secured to the disk in an associated holder via a further gear stage separate from the first gear train, a separate lubrication system with a separate lubricant supply can be created for each gear. This allows both the one and the other lubrication types to be used in a single tool turret, for example, grease lubrication for the swivel drive of the tool turret and a less intensive lubrication, for example, in the form of oil mist lubrication, for the tool drive of a machining tool on the tool disk.Accordingly, one type of lubricant inlet can be used to supply a fluid with high working intensity, such as gear grease, and the other type can be used to supply a fluid with less working intensity, such as gear oil. However, it is also possible to use both or all types of lubricant inlets for only one type of lubricant, particularly in the context of oil-air lubrication. It has proven particularly advantageous if the lubricant in the return line flows into a central gear chamber and can then be removed from the system via an associated lubricant outlet.
[0017] In a preferred embodiment of the tool turret according to the invention, it is provided that the turret axis has a rod-shaped support body which is at least partially penetrated by a fluid channel which is connected at one end region to the one lubricant inlet and at its other end region at least partially opens into at least one annular channel which supplies the one gear in the inlet with lubricant.
[0018] It is preferably further provided that a lubricant return takes place from the side of one gear along a gap guide formed by the outer circumferential side of the carrier body, which is surrounded at a predeterminable radial distance by a hollow shaft which establishes the operative connection between the two gears. In this way, a supply of lubricant to one gear, which is located at one end of the carrier body forming the turret axis, is possible over a very long distance, as well as a return flow towards the other free end of that carrier body. The lubricant in the supply and return lines is introduced into the tool turret in a predeterminable quantity, whereby a predeterminable quantity can be constantly circulating and, moved by the individual gears, serves to dissipate heat.If circulating lubrication is desired, the lubricant continuously introduced into and removed from the tool turret can also be cleaned outside the tool turret, for example, using filter elements that remove any particulate contamination from the fluid flow. Furthermore, it is possible to replace used lubricant with new lubricant, especially if oil-air lubrication is implemented via the lubricant supply. This oil-air mixture is preferably sprayed onto the gears of a gearbox or gear stage to ensure even distribution.
[0019] In a further preferred embodiment of the tool turret according to the invention, the additional gear chamber has a reduction gear as an additional gear, which adapts the speed of the drive motor to the speed required for driving the tool, and the middle gear of the reduction gear meshes with the output gear located on the hollow shaft. In this way, the actual drive can be located by means of the drive motor and the reduction gear at a location where there is space, preferably in the rear area of the tool turret, in order to transmit the power from there via the hollow shaft to the gear parts that are directly responsible for driving a rotating machining tool. In this respect, the lubricant is supplied separately from the first lubricant supply into the corresponding gear chamber with the additional gear.
[0020] In another particularly preferred embodiment of the tool turret according to the invention, it is provided that a lubricant drain is provided in the base housing at each of two different removal points such that, when the installation positions are offset by 90 degrees to one another as the respective end position, one of the lubricant drains always forms a lower removal point for the lubricant drain; the same applies if the respective installation position lies between the aforementioned end positions. Preferably, a fluid-carrying cross-connection runs within the base housing within the further gear chamber between the two adjacent lubricant drains.To this end, the turret has two lubricant drains, or rather bore-like drain openings, and a cross connection between the individual gear compartments, so that, depending on the installation position of the tool turret, the lubricant can be centrally drained or extracted on the right or left side of the turret. The lubricant drains must be equipped with appropriate connections to allow the connection of an extraction device with its extraction nozzles. This drainage function also applies if the tool turret is tilted, for example, 45 degrees to the left or 45 degrees to the right compared to a normal installation position, depending on the type of machine on which the turret is mounted.In this respect, too, regardless of the mounting position, a lower drain point of the corresponding gearbox compartment is at a different location; however, it still forms a lowest point for the drainage of lubricant from the respective gearbox compartment as a whole.
[0021] In a further preferred embodiment of the tool turret according to the invention, the additional gear chamber forms the fluid-conducting subchambers, which at least partially enclose the respective gears of the additional gear at a predeterminable radial distance. The radial distances formed prevent squeezing of the lubricant, which in turn benefits a low operating temperature, and the lubricant, preferably also in the form of an oil-air mixture, is applied to the gears of the additional gear, or the gears run in the corresponding lubricant bath.
[0022] In a further preferred embodiment of the tool turret according to the invention, it is provided that, in order to realize an emergency running property during operation, a gearwheel of the additional gear unit, which is arranged lowest in the row, rotates in a subchamber in which lubricant is accumulated up to a predeterminable amount. This provides the tool turret with a type of emergency lubrication, i.e., should the oil-air lubrication fail, lubrication, at least of the additional gear unit, is still guaranteed for a certain period of time. In this respect, the lubricant drain or drain or suction hole was designed to be positioned at a lower point of the associated gear unit chamber; however, not at the lowest point. This permanently creates an oil level in the additional gear unit chamber up to the height of the lubricant drain, and does not drain completely.A friction partner is permanently immersed in this lubricant bath and distributes the lubricant by adhesion to the other friction partners of the respective gear train, even if the oil-air lubrication fails.
[0023] In a further preferred embodiment of the tool turret according to the invention, one gear with its housing space is provided as part of a gear head arranged stationary in the tool disk, around which the tool disk is rotatably guided on the support body. The gear head can be secured relative to the base body in at least one predeterminable working position by means of a coupling, such as a Hirth gear. Thus, the gear head and the base housing form a kind of stable support component around which the tool disk, with its holders and associated machining tools, can rotate.
[0024] In the following, the tool turret according to the invention is explained in more detail using an exemplary embodiment according to the drawing. In this diagram, not to scale, the
[0025] Figure 1 shows a perspective rear view of the essential components of the tool turret, which is shown partially in section and without an electric drive motor;
[0026] Figure 2 shows a longitudinal section through the tool turret according to Figure 1 with a schematically illustrated drive motor; Figure 3 shows a partially sectioned section of a lubricant supply for a gear head, which is enclosed by a tool disk according to Figures 1 and 2; and
[0027] Figure 4 is a frontal rear view of the tool turret according to Figure 1 with fluid guides indicated by dashed lines and with arrows that essentially show the flow direction of the fluid.
[0028] The tool turret shown in Figure 1 has a base body 10 with a ring eyelet 12 attached to the top, which serves to engage a lifting gear (not shown), by means of which the tool turret can be handled as a whole, in particular can be moved to a location on a machine tool. The base body 10 comprises a turret axis 14, about which a tool disk 18 is mounted in the usual way on the base body 10 at its front end, rotatable by means of a drive 16 (only partially shown in Figure 2), so that this will not be discussed in detail here. The tool disk 18 has a plurality of tool stations 20 spaced equidistant from one another along its circumference, which are covered by covers 22 when not in use.If the respective cover 22 is removed from a tool station 20 of the tool disk 18, a holder with an associated, in particular rotatable, machining tool can be inserted into the tool disk 18. The corresponding construction is also conventional, so that it will not be discussed further here. By rotating the tool disk 18 and subsequently securing it to the base body 10, the tool stations 20 can be brought, for example in succession, into a working position 24, in which a tool drive 28 located inside the tool disk 18 and drivable by means of a gear train designated as a whole by 26, with its drive-side coupling part 30 comes into coupling engagement with a tool-side coupling part for driving a tool in a conventional manner (not shown), which is located at the tool station 20 aligned with the working position 24.
[0029] The gear train 26 for the tool drive 28 has a gear 32 in a gear chamber 34 within the tool disk 18. A further gear 36 (see Figure 4) is arranged in a further gear chamber 38 within the base body 10, in its rear area. The further gear 36 and thus the gear train 26 with the one gear 32 can be coupled to the drive 16, which preferably consists of an electric motor, such as a synchronous motor or an asynchronous motor. Both gears 32, 36 are connected to one another via an operative connection in the form of a hollow shaft 40.
[0030] The further gear 36 shown in Figure 4 has a simplified drive gear 42, which is usually located on the drive axle 44 (Figure 2) of the drive 16 in the form of the electric motor.
[0031] The respective drive gear 42 in turn meshes with an intermediate gear 46, which in turn meshes with an output gear 48, the external toothing of which is indicated in Figure 4. The additional gear 36 constructed in this way is accommodated in a further gear chamber 38, specifically in the rear region of the base body 10, which is formed by a solid end plate 50. The gear in the form of the output gear 48, which is arranged at the bottom as viewed in Figure 4, is penetrated by the hollow shaft 40, which ends flush with the output gear 48 with its rear free end region and forms a rotationally fixed connection with it. At its front area and at a transition point to the tool disk 18, the hollow shaft 40 has a spur gear 52 which meshes with a spur gear 54 of the gear 32 for the tool drive 28.In this respect, the drive torque acting along the turret axis 14 is deflected at right angles via the gears 52, 54, so that the drive axis of the tool drive 28 is perpendicular to the turret axis (Figure 3). As can be further seen from Figure 3, a shaft toothing 56 is provided on the outer circumference of the hollow shaft 40 in the rear area, for example in the form of a spline shaft toothing, onto which the output gear 48 with a corresponding internal toothing can be pushed for a rotationally fixed connection.
[0032] As can also be seen from the figures, the tool turret has a lubricating device, designated as a whole by 58, by means of which the individual gears 32, 36 are supplied with lubricant in their gear chambers 34 and 38 respectively. For this purpose, the lubricating device 58 has two spatially separated lubricant inlets 60 (ZI), 62 (Z2), which are each connected to a gear chamber 34, 38 of an associated gear 32, 36 in such a way that the respective gear 32, 36 can be supplied with the same or different lubricants in the respective inlet 64, 65 and that at least one lubricant outlet 66, preferably in conjunction with a further lubricant outlet 68, opens into one of the gear chambers, here the further gear chamber 38, into which lubricant flows from both gears 32, 36 in the return line 70, 71.
[0033] As further shown in Figure 1, the second lubricant inlet 62 is arranged almost congruently in front of the first lubricant inlet 60 in the longitudinal direction. As shown in particular in Figure 3, the turret axis 14 has a rod-shaped, linear support body 72, through which a fluid channel 74 extends at least partially, which is connected at one end region 76 to the one lubricant inlet 60. It is understood that if lubricant is to be introduced into the fluid channel 74 or if lubricant is already present in the lubricant system of the tool turret, the lubricant inlet 60 can be closed by means of a closing screw 78. Similar considerations also apply to the second lubricant inlet 62.At its other end region 80, the fluid channel 74 opens into an annular channel 82 via a transverse bore in the carrier body 72, through which the tool drive 28 can be supplied with lubricant from the fluid channel 74. Likewise, the supply of lubricant at the front end region 76 of the carrier body 72 can be carried out in a comparable manner via an annular feed channel 84. The return flow 70 of lubricant, starting from the gear chamber 34 of the tool drive 28 in the direction of the further gear chamber 38 with the three gears 42, 46 and 48, takes place along a gap guide 86 formed by the outer circumferential side of the carrier body 72, which is enclosed by the hollow shaft 40 at a predeterminable radial distance, forming the gap of the guide 86, which establishes the previously mentioned torque-transmitting operative connection between the two gears 32 and 36. In this way, the gap guide 86 serves the lubricant return 70 at this point.To allow lubricant to escape from the gap guide 86 into the further gear chamber 38 in the area of the output gear 48, the hollow shaft 40 is axially offset in length relative to the carrier body 72, as viewed in the direction of Figure 3. For improved sealing and guidance of the stationary carrier body 72, i.e., the turret axis 14, lubrication and sealing grooves 88 can be introduced into the cylindrical carrier body 72 in packages at the end. The carrier body 72, hollow shaft 40, and gap guide 86 are preferably arranged concentrically to the turret axis 14.
[0034] As Figure 4 in particular shows, the further gear 36 in the further gear chamber 38 is designed as a reduction gear which adapts the speed of the drive 16 to the required speed for the tool drive 28, wherein, as already explained, the middle gear 46 of the reduction gear meshes with the output gear 48 which is mounted on the hollow shaft 40 in a rotationally stable manner by means of the shaft toothing 56.
[0035] As Figure 4 further shows, a lubricant drain 66, 68 is provided in the base housing 10 at each of two different or spaced-apart extraction points such that, when the installation positions are offset by 90° to one another as the respective end position, one of the lubricant drains 66 or 68 always forms a lower extraction point for the drainage of lubricant from the base housing 10. This also applies if, as shown in Figure 4, the respective installation position lies between the aforementioned end positions, for example, is offset by 30° from the horizontal. As Figure 4 further shows, a fluid-carrying cross-connection 90 is arranged within the further gear chamber 38 between the two lubricant drains 66, 68 within the base housing 10. The channel-like cross connection 90 connects two partial spaces 92, 94 of the drive gear 42 and the driven gear 48 at their lowest point in the installation position shown in Figure 4.A gear subchamber 96 is provided for the intermediate gear 46. The corresponding subchambers 92, 94, and 96 surround the respective associated gears 42, 46, 48 with a predeterminable radial distance and serve for lubricant circulation. Thus, lubricant supplied via the second lubricant inlet 62 into the further gear 36 via the inlet 65 is entrained counterclockwise in the direction 64 of Figure 4 by the driven gear 48 and passed on to the subchamber 96 with the intermediate gear 46. Due to its toothing, the intermediate gear 46 now carries the lubricant clockwise to the further subchamber 92 with the drive gear 42, which also carries the lubricant clockwise in a fluid flow. Via the already mentioned cross connection 90, lubricant then reaches the lowest point of the sub-chamber 92 into a lower region of the sub-chamber 94 with the output gear 48.A further fluid-carrying cross-connection 98 exists above the one cross-connection 90 for the purpose of transferring lubricant from the third sub-chamber 96 into the second sub-chamber 94. Drainage channels 100 are connected to the bottom of both the sub-chamber 92 and the second sub-chamber 94, which connect the respective lubricant drain 66, 68 with an associated sub-chamber 94 or 92. This provides a means for the return flow 71 from the further gear 36 to a collection point for lubricant, wherein the corresponding drains 66, 68 are closed during operation of the tool turret, in any case, unless circulating lubrication is provided, for example by using spring-loaded check valves which can be opened by a suction device (not shown) in the opposite direction to the return flow 71.
[0036] It is understood that the further gear chamber 38 with its subchambers 92, 94, 96 extends into the plane of the drawing as viewed in the direction of Figure 4, so that the gap guide 86 opens as the first return 70 into the subchamber 94 with the output gear 48.
[0037] In the illustrated embodiment, both lubricant circuits are to be supplied with an oil-air lubricant via connections 60, 62. However, it is also possible to supply a gear head 102 with the tool drive 28 with an oil-air lubricant via the lubricant inlet 60 and to equip the additional gear chamber 38 with an oil filling as a lubricant. The tool disk 18 is rotatably mounted on the stationary gear head 102 by means of the drive 16, and when the tool drive 28 is stopped, the tool disk 18 can be driven in a known manner via a stepped gear 104, which can be coupled to the stepped gear 104 by means of Hirth gears 106.For this purpose, the Hirth gears 106 have circular individual gears arranged concentrically to the turret axis 14, enabling torque transmission from the multi-gear transmission 104 as soon as a hydraulically actuated coupling piece, acting as a clutch 108, reaches its front locking position shown in Figure 2 and, with its spur gearing, releasably couples the two partial gears arranged concentrically in a plane parallel to one another. In this way, an output shaft 110 of the multi-gear transmission 104 can then be coupled to the tool disk 18 for pivoting the tool disk 18 (Figure 2).
[0038] The respective multi-stage gear unit 104 also has a multi-stage gear unit chamber 112, which is preferably provided with a suitable medium for oil or grease lubrication as a lubricant. It is understood that the aforementioned lubrication circuits for the gear units 34, 38, and 112 are spatially separated from one another in such a way that, if necessary, a wide variety of lubricants can be used for a single tool turret with just one lubrication device 58 via various lubricant inlets and outlets 60, 62 and 66, 68, respectively.
[0039] Finally, it should be mentioned that, in order to implement emergency running during operation, the gearwheel arranged lowest in the row—here, gearwheel 48 of the further gear unit 38, which rotates in the subchamber 94—can be used to store a certain, predeterminable quantity of lubricant in order to ensure a lubricant supply in all circumstances. In this way, if, for example, the oil-air lubrication for the tool drive 28 should fail, lubrication of the gear train 26 with the gear unit 32 and the oil lubrication provided for this purpose can still be maintained for a certain period of time. For this purpose, a drain hole or suction hole 114 was positioned at the lower point of the subchamber 94; however, not at the lowest point as specified by the lubricant drain 66.In this way, a predeterminable fluid level with an oil medium as a lubricant is created in the gear subchamber 94, into which a friction partner in the form of the output gear 48 permanently engages, and as the illustration according to Figure 4 illustrates, the lubricant in question is further distributed by adhesion to the other friction partners in the form of the drive gear 42 and the intermediate gear 46, even in the event of failure of the oil-air lubrication for the gear head 102, so that emergency lubrication for predeterminable gear parts of the tool turret is achieved.
Claims
P a t e n t a n s p r ü c h e 1. A tool turret with a base body (10) to be attached or attached to a machine tool, said base body having a turret axis (14) about which a tool disk (18) is mounted rotatably on the base body (10) by means of a drive (16), said tool disk having a plurality of tool stations (20) distributed around its circumference, which can each be brought into at least one working position (24) by rotating the tool disk (18) and subsequently fixing it, in which a tool drive (28) located inside the tool disk and drivable by means of a gear train (26) engages with its drive-side coupling part (30) with a tool-side coupling part for driving a tool located at the tool station (20) aligned with the working position (24),wherein the gear train (26) for the tool drive (28) has a gear (32) in a gear chamber (34) within the tool disk (18) and a further gear (36) in a further gear chamber (38) within the base body (10), which can be coupled to the drive (16), wherein both gears (32, 36) are connected to one another via an operative connection (40), and wherein the individual gears (32, 36) are supplied with lubricant in their gear chambers (34, 38) by means of at least one lubricating device (58), characterized in that the lubricating device (58) has at least two separate lubricant inlets (60, 62), which are each connected to a gear chamber (34, 38) of an associated gear (32, 36) in such a way that the respective gear (32, 36) can be supplied optionally with the same or different lubricants in the inlet (64, 65). and that at least one, Lubricant outlet (66, 68) opens into one of the gear chambers (38), into which lubricant flows from both gears (32, 36) in the return line (70).
2. Tool turret according to claim 1, characterized in that the turret axis (14) has a rod-shaped carrier body (72) which is at least partially penetrated by a fluid channel (74) which is connected at its one end region (76) to the one lubricant inlet (60) and at its other end region (80) opens at least partially into at least one annular channel (82) which supplies the one gear (32) in the inlet (64) with lubricant.
3. Tool turret according to claim 1 or 2, characterized in that a lubricant return (70) from the side of one gear (32) takes place along a gap guide (86), formed by the outer peripheral side of the carrier body (72), which is surrounded at a predeterminable radial distance from a hollow shaft (40) which establishes the operative connection between the two gears (32, 36).
4. Tool turret according to one of claims 1 to 3, characterized in that the further gear chamber (38) has a reduction gear as a further gear (36) which adapts the speed of the drive (16) to the required speed for the tool drive (28) and that the middle gear (46) of the reduction gear in the sequence meshes with an output gear (48) which is seated on the hollow shaft (40).
5. Tool turret according to one of the preceding claims, characterized in that at two different removal points a lubricant drain (66, 68) is provided in the base housing (10) in such a way that at 90 degrees to each other offset installation positions than the respective end position, one of the lubricant outlets (66, 68) always forms a lower removal point for the drainage of lubricant; also in the event that the respective installation position lies between the said end positions.
6. Tool turret according to one of the preceding claims, characterized in that within the further gear chamber (38) between the two lubricant outlets (66, 68) a fluid-carrying cross connection (90) runs within the base housing (10).
7. Tool turret according to one of the preceding claims, characterized in that the further gear chamber (38) forms fluid-conducting subchambers (92, 94, 96) which, with a predeterminable radial distance, at least partially encompass the respectively received gear wheels (42, 46, 48) of the further gear (36).
8. Tool turret according to one of the preceding claims, characterized in that, in order to realize an emergency running property during operation, a gear wheel (48) of the further gear (36) arranged at the bottom of the row rotates in a partial space (94) in which lubricant can be collected up to a predeterminable amount.
9. Tool turret according to one of the preceding claims, characterized in that the one gear (32) with its gear chamber (34) is part of a gear head (102) arranged stationary in the tool disk (18), about which the tool disk (18) is rotatably guided on the carrier body (72), which can be fixed by means of a coupling (108) in at least one predeterminable working position on the base body (10) relative to the latter.
10. Tool turret according to one of the preceding claims, characterized in that one type of lubricant inlet (62) is used to supply a highly viscous fluid, such as a gear grease, and the other type of lubricant inlet (60) is used to supply a fluid of low viscosity, such as a gear oil, or that both inlets (60, 62) supply one and the same lubricant of the same viscosity to the respective gear (32, 36, 112).