Rotating multi-level pipe magazine

Abstract

The invention relates to a rotating multi-level tubular magazine with several tool holding levels and rows of tool holding fixtures. Within the interior of the magazine, several work spindles, one per tool holding level, are mounted in a rigid central block that is fixedly arranged on the machine tool side. A tubular magazine body is mounted on a central block and can be moved transversely and rotated about its axis. The tubular magazine body has a storage cover for storing several tool holders for each tool holding row. The storage cover, with the tool holders required for workpiece machining, can be brought into a working position in front of the work spindles, both in the direction of rotation of the tubular magazine body and in the direction of displacement. The present invention develops a rotating multi-level tube magazine that can simultaneously position tool-carrying tool holders in front of several work spindles with repeatable accuracy and a short tool change time for coupling and driving.

Description

The invention relates to a revolving multilevel tube magazine with a plurality of tool receiving levels and tool receiving rows, in the interior of which a plurality of work spindles, one per tool receiving level, are mounted in a rigid central block arranged in a fixed manner on the machine tool side.In most machining centers, in which a plurality of comparable machining operations are carried out simultaneously, turret heads are used which have a plurality of tool planes, cf. DE 20 2014 105 912 U1. The turret heads shown here are used, for example, to machine a four-cylinder motor housing. All tools arranged on the turret head have their own drives or are controlled via a gear arranged in the turret head. Each tool-carrying tool holder is held in a dimensionally rigid manner in the encircling basic body of the turret head by means of a highly precise interface. As a result, during each further cycle from one tool group to the next, the massive, heavy base body must be pivoted further. In this alternating phase, high dynamics cannot be achieved.A turret head is likewise known from EP 1 399 293 B2. In this variant, a drive spindle is accommodated in the center, which is supported on the machine tool by means of a torque support. A disk-shaped turret rotates around the drive spindle. The latter supports the various tool holders. Between the turret head and the drive spindle there is a hydraulically controlled sliding coupling with play, by means of which the shaft of the working spindle is coupled to the shaft of the tool holder. In order to now achieve a usable repetition accuracy, the turret head must also be designed here to be dimensionally rigid and massive. Since in the case of a rotational body, such as a turret head, the mass moment of inertia depends on the square of the radius, in this solution the further cycle dynamics are only insignificantly better than in the case of the subject matter of the utility model DE 20 2014 105 912 U1.A tool turret is thus a carrier of a plurality of driven tools. On its base body, e.g. a face plate or a star, tools are fixedly mounted and precisely aligned. The base body, the central component of the tool turret, forwards the machining forces and machining torques produced on the tool directly to the machine tool. The base body must consequently be so rigid in shape that position deviations do not occur at the tool cutting edge during the machining operation. The carrier thus carries out the holding of the tool position under machining load. In addition, in turrets, the tool holders must be re-aligned during each exchange.DE 10 2012 104 490 A1 discloses a tool carrier system for a machine tool, in which a base part is fastened to a workpiece carrier base, in which a work spindle is arranged. Furthermore, a flange is mounted on the workpiece carrier base, which flange can be displaced with respect to the base part by means of a lifting cylinder. A tool carrier unit is rotatably seated on the flange. The latter stores the tool holding receptacles as magazines. For working, the tool carrier unit is moved against the front side of the working spindle seated in the base part in order to couple the working spindle to the selected tool holding receptacle. After the coupling, the tool carrier unit once again performs a stroke against the front side of the work spindle in order to release the tool holder from its locking on the tool carrier unit.DE 10 2013 013 050 A1 discloses a machine tool for machining workpieces with two spindle assemblies. WO 2012 / 172415 A1 discloses an electric spindle with a tool changing device. WO 2015 / 008 124 A1 discloses a turret head for a machine tool.The present invention is based on the problem of developing a revolving multilevel pipe magazine which can position tool holders or tools carrying tools at the same time spatially in front of a plurality of work spindles in a repeat-accurate manner-with a short tool change time-for clamping and driving.The problem is solved by the features of claim 1. For this purpose, the central block rolls and / or slides in a driven manner and displaceably supports a single- or multi-part magazine tube carrier transversely to the central line inherent in the central block. The single- or multi-part magazine tube carrier rolls or slides a magazine tube body having a plurality of tool receiving planes and tool receiving rows rotatably about the central block. The magazine tube body has a storage cover for receiving a plurality of tool receptacles per tool receptacle row, the number of which covers corresponds at most to the number of tool receptacle planes. The storage cover can be positioned with the tool holders required for the workpiece machining in front of the front end faces of the work spindles both in the direction of rotation of the magazine tube body and in the direction of displacement of the magazine tube carrier-in a working position. The work spindles are arranged next to each other and their center lines are oriented parallel to the displacement direction of the magazine tube carrier.A tool magazine in the form of the multi-level tube magazine described is considered as a peripheral device of a machine tool. It serves for storing or "storing" the tools which the machine tool is not currently in use. In the present example, it is combined with the simultaneous feeding of a plurality of tools to a plurality of work spindles. In the tool magazine, the tools are deposited in a magazine tube body only so precisely that the work spindles can receive them. Only after the work spindles have taken over the tools with their clamping means are the tools positioned in the machine tool precisely and with precision in repetition. The work spindles transmit the machining forces to the machine tool via their housing. The tool-storing storage spaces of the magazine surround the rotating tools with great play without supporting them or otherwise influencing them.Since the magazine tube body has no function during the workpiece machining, it only has to carry the weight forces of the tool holders and tools placed in it. On the other hand, it only needs to be so rigid in shape that the work spindles can grip the tool holders with their clamping means. As a result, the magazine tube body can be designed to be very thin-walled on the one hand in comparison with the tool-carrying head of a turret. On the other hand, materials can be used for the magazine tube body whose modulus of elasticity is below 80000 N / mm 2. As a result, aluminum alloys or else composite materials based on glass fibers or carbon fibers are conceivable as materials. As a result, the polar moment of inertia of the magazine tube body can be lowered by more than a factor of 15 compared to a turret head comparable in external dimensions, because of the smaller wall thicknesses and the smaller material density. This has a direct effect on the dynamics of the magazine. A 360 angular degree rotation permits an increase in rotational speed by several times compared to a conventional turret.In the magazine tube body, the tool holders are placed in storage covers. A storage cover can take over as many tool receptacles as the magazine tube body has tool receptacle planes. During re-magazineing or re-magazineing, a plurality of tool holders can thereby be exchanged simultaneously.The multi-level tube magazine is suitable for storing static tool receptacles or static tools. If the tool holders or tools are pivoted from their magazine position into the working position, they are not gripped by the work spindles, but rather by a storage cover clamping system. By lateral displacement of the magazine tube body, the adapters of the storage lid clamping system abut the matching counter adapter of the central block carrying the magazine tube body in order to be clamped there. Thus, all forces acting on the tool are passed on directly from the storage cover into the central block and from there into the machine tool portal.In a preferred embodiment of the invention, the storage covers have a grip-like receiving shape for dynamic tool receptacles and a flange-like receiving shape for static tool receptacles, wherein each dynamic tool receptacle of a tool receiving plane can be clamped to its work spindle.In a further preferred embodiment of the invention, the dynamic tool receptacles have a conical region, against which they-deposited outside the workpiece machining in a magazine position-bear by means of spring force in the region of the grip-like receptacle shape of the storage cover.Further preferably, the dynamic tool receptacles have a plurality of spring-loaded division positioning elements which, in the magazine position, engage positively in corresponding recesses of the engaging-around receiving form.Even more preferably, the dynamic tool holders (the storage cover-in its working position-do not contact.Preferably, the work spindles have centre lines which intersect perpendicularly with the centre lines of the central block and the magazine tube body.According to a further preferred embodiment, the individual working spindle (without removing the magazine tube body from its mounting - can be removed from the magazine tube body in the axial direction of its center line by a recess closed by the removable storage cover.Particularly preferably, the average wall thickness of the magazine tube body is less than 1 / 26th of its maximum outer diameter.Further details of the invention are given in the dependent claims and the following descriptions of schematically illustrated embodiments. FIG. 1 : Perspective view of a machine tool equipped with a multi-level pipe magazine; FIG. 2 : Perspective view of the multi-level tube magazine; FIG. 3 : Perspective view of the multilevel tube magazine without storage lid and tool holder, reduced; FIG. 4 : Enlargement of FIG. 3, but without magazine tube body and magazine support cover; FIG. 5 : longitudinal section of the multi-level tube magazine; FIG. 6 : Cross section of the multilevel tube magazine; FIG. 7 is a longitudinal section of a work spindle; FIG. 8 : Longitudinal section section of the front region of the work spindle according to FIG. 7, enlarged; FIG. 9 : a longitudinal section of the rear region of the work spindle according to FIG. 7, enlarged; FIG. 10 : partial section through the multi-level tube magazine with the tool holder not adapted; FIG. 11 : enlarged detail of FIG. 10 ; FIG. 12 : partial section through the multi-level tube magazine with the tool holder brought in, but not yet adapted; FIG. 13 : enlarged detail of FIG. 12 ; FIG. 14 : partial section through the multi-level tube magazine with adapted tool holder; FIG. 15 : enlarged detail of FIG. 14 ; FIG. 16 : Section through a tool assembly; FIG. 17 shows a half section through a dynamic tool holder for a semi-automatic tool change, enlarged; FIG. 18 : partial section to FIG. 17 with a clamped interface without a changed tool; FIG. 19 : Section through a static tool holder with a capto interface; FIG. 20 : Section through a static tool holder in the form of a parallel gripper; FIG. 21 : Section through a storage cover and a retaining ring.FIG. 1 shows a machine tool ( 3) which is equipped with a workpiece support slide ( 6) and at least one multilevel tube magazine ( 1) with an internal spindle. In the exemplary embodiment, the machine tool ( 3) is based on a portal stand ( 4) on the front wall of which the multilevel tube magazine ( 1) is mounted. The multilevel tube magazine (1) has a magazine tube body (100) which is rotatably mounted about the center line (2) of the multilevel tube magazine (1). The portal stand (4) has a stand recess (5) from which the workpiece support slide (6) protrudes. The latter, which carries two workpieces (9) lying next to one another, is mounted in the gantry stand (4) in such a way that it can be moved in the x-, y- and z-direction (7). In addition, the workpiece support slide (6) has a rotational center line (8) about which it can pivot by, for example, 210 degrees of angle.The multi-level tube magazine ( 1) is shown in FIG. 2 as a single complete assembly with different tool holders ( 230, 250, 310). The rotatable magazine tube body ( 100) with its magazine tube support cover ( 106) can be seen. The magazine tube body (100) rests sealingly on the rear side on an optionally multi-part, stationary base plate (107). In the magazine tube body (100), for example in the form of a grid, eight storage covers (110) are installed here. Each storage cover (110) holds, merely by way of example, two identically constructed tool holders (200, 230, 250, 270, 310, 340), cf. FIG. 6, so that the magazine tube body (100) has two tool holder planes (101, 102). According to FIG. 2, two static tool holders (310), two tool assemblies (250), two semi-automatic tool holders (270) and two dynamic tool holders (230) with manual clamping are arranged in the storage covers (110) - lined up from top to bottom in the clockwise direction.Of course, the multi-level tube magazine (1) can also be constructed to be longer along its center line (2), so that three, four or more tool receiving levels are produced.The multilevel pipe magazine (1) has as a base part a central block (10) made e.g. of GGG 40, cf. Figs. 4 and 6, which e.g. substantially represents an octagonal straight prism. The central block (10) is rigidly fastened at its end face with its rear fastening side (11), for example, to the portal stand (4) of the machine tool (3) supporting it. It has a large support base or surface on the portal stand. The height and / or width of the fixing surface of the prism is greater than 60% of the maximum diameter of the rotatable magazine tube body (100), whereby a good supporting effect is obtained.In the exemplary embodiment, the central block (10) has two large transverse recesses (14, 15) in each of which a working spindle (40) is installed.On the central block (10), cf. FIGS. 3 to 5, a front slide (21) and two bearing slides (35, 36) are guided in a rolling-contact manner. The guiding direction (29) is oriented parallel to the center lines of the transverse recesses (14, 15). The end slide (21) carries an end slide flange (26) on a rolling bearing basis, while the bearing slides (35, 36) receive an annular flange (37) on a rolling bearing basis. Both flanges (26, 37) are connected to one another in a dimensionally rigid manner via a magazine tube body (100) provided with a magazine tube support cover (106). In FIG. 3, the magazine tube support cover ( 106) is shown merely by way of example as a spoke body. As a rule, it is designed to be closed-walled.The end slide (21) is mounted on, for example, four guide carriages (23), two of which are arranged one behind the other and engage around a guide rail (16) mounted on the free end face (13) of the central block (10). The two front guide rails ( 16) have a guide-effective distance which is greater than 33% of the outer diameter of the magazine tube body ( 100). In the region of the fastening side (11) of the central block (10), the bearing carriages (35, 36) are mounted on two guide carriages (34), wherein each guide carriage (34) engages around a guide rail (12) screwed to the central block (10). The guide effective distance of these guide rails (12) is greater than 65% of the outer diameter of the magazine tube body (100).A linear drive (17) is fastened to the central block (10) in the upper region of the free end face (13), which linear drive transmits its lifting movement via a drive adapter (22) to the end slide (21) via a drive rod (18). The stroke of the linear drive (17) is, for example, 30 mm. Depending on the size of the magazine, it can be between 15 and 50 mm. A hydraulically operating cylinder-piston unit is used as the linear drive (17). Alternatively, the drive medium can also be gaseous. An electromechanical drive in the form of a geared motor or the like is also conceivable.In the lower region of the end slide ( 21), an electromechanical rotational drive ( 31) is fastened, cf. FIG. 5, it comprises at least one angle measuring system, optionally a tachogenerator and a reduction gear. The gear output of the rotary drive (31) is a spur gear (32) having a centerline parallel to the center block centerline (2). The spur gear (32) meshes with an output gear (28) which is mounted on the spur carriage (21) via a spur carriage flange (26) and a rolling bearing (25), for example a double-row flange shoulder bearing forming the fixed bearing. The magazine tube support cover (106) is centered in the central bore of the end slide flange (26) and is secured by an inner cover (27) and screws. The magazine tube support cover (106) is screwed to the magazine tube body (100) in a centered manner.The rear free end of the magazine tube body (100) is seated in the fastening region of the central block (10) in a screwed manner on an annular flange (37) which forms the outer ring of a needle bearing, cf. FIG. 5. A short bearing slide (35, 36) is fastened to the latter at the top and bottom, which is supported via a guide carriage (34) on the guide rail (12) screwed to the central block (10).The annular flange (37) carries a sealing ring (39) on its side facing the base plate (107), for example at the height of the circumferential needles of the needle bearing (38). The sealing ring (39), which is a relatively rigid lip seal, abuts a finely machined sealing slide surface (98) of the base plate (107). On the flat sealing sliding surface (98), the sealing ring (39) slides on the one hand transversely to the center line (19) of the central block (10) in the displacement direction (29) and on the other hand it revolves around the center line (109) of the magazine tube body (100). The sealing edge of the sealing ring (39) is oriented outwards. During the movement in the displacement direction (29), the sealing air pressure present in the interior space (108) can be raised briefly by a factor of 1.5 to 3 in order to facilitate the sliding movement of the seal. The base plate (107) itself is fastened in the region of the rear side of the central block (10) according to FIG. 4. The mounting joint between the parts (10) and (107) is sealed.The working spindle ( 40) mounted in the individual transverse recess ( 14, 15) of the central block ( 10), cf. FIGS. 6 to 9, has a tubular motor housing ( 42), in the radial outer wall of which a spiral groove ( 43) is worked. In the spiral groove (43), which receives a closed channel cross section through the inner wall of the transverse recess (14, 15), coolant for the electric motor (90) is guided. The motor housing (42) has in the front region an inner flange (44), against which, for example, two spindle-bearing shoulder bearings (45) arranged next to one another axially abut at the front, for example via a spacer ring. The stator ( 91) of the drive motor ( 90) abuts against the rear end face of the inner flange.The tubular motor housing (42) supports at its rear end a flange cover (47) with an outwardly facing inner collar on which a further shoulder bearing (48) abuts via a flange sleeve (49). The flanged sleeve (49) has a plurality of axial blind holes in which helical compression springs are arranged, which press the outer ring of the shoulder bearing (48) outwards via the flanged sleeve (49). The shoulder bearings (45, 48) supporting a spindle shaft (50) are arranged in an O-arrangement.The hollow spindle shaft (50), the diameter of which tapers stepwise from front to back, has a bearing seat (52) for the shoulder bearings (45) at the front-in the region of the spindle head. In front of the bearing seat (52), it has an external thread (53), on which a threaded sleeve (56) which axially clamps and bears against the inner ring of the outer shoulder bearing (45) is screwed. The latter has a threaded sleeve flange (57), cf. FIG. 9, which has a grip (58) for forming a sealing air labyrinth seal. The grip (58) partially engages around a region of the front housing cover (60) with play. The housing cover (60) screwed to the motor housing (42) surrounds the threaded sleeve (56) with radial play. In the clearance region, the housing cover ( 60) has a radially oriented inner circumferential groove ( 61), which is pneumatically connected to a supply channel, not shown, of the spindle housing ( 42). A plurality of radial bores which are located in the threaded sleeve (56) open into the circumferential groove (61). These bores also open into a circumferential groove (59) of the threaded sleeve (56).FIG. 14 shows a variant of the housing cover ( 60). Here, the housing cover ( 60) is extended in the direction of the storage plate ( 110) in order to be able to clamp a seal in a recess ( 63) on the housing cover side. The seal is a double lip seal ( 66) which has a dimensionally rigid metal ring in the contact region with the radial and axial wall of the recess ( 63), onto which ring the double lip seal ( 66) is vulcanized, for example. The double lip seal ( 66) rests with an outer and inner sealing lip tightly against the storage cover ( 110) located in the working position. The outer sealing lip ( 68) prevents the sealing air present in the interior ( 108) from escaping via the gap present between the tool receiving shaft ( 201) and the storage cover ( 110). The inner sealing lip ( 67) protects the interior ( 108) from penetrating dirt and / or, for example, from spindle-side cooling and / or lubricant under higher pressure. If necessary, the seal ( 66) can also be equipped with only one sealing lip.At the front, the spindle shaft (50) has a central conical recess (55), which belongs to a stepped bore (54) running through the spindle shaft (50) in the longitudinal direction. The conical recess (55) is connected via a plurality of transverse bores, for example obliquely extending transverse bores, with the circumferential groove (59) of the threaded sleeve (56). The transverse bores are each adjoined by longitudinal bores which extend from the planar end face (51) of the spindle shaft (50).On the spindle shaft (50) behind the front bearing seat (52) of smaller diameter, a balancing ring (62) is seated by a transverse press fit. It is followed by the rotor (92) opposite the stator (91).Screwed onto the rear end of the spindle shaft (50) is a clamping sleeve (64) on which the inner ring of the rear shoulder bearing (48) is supported. A measuring gearwheel ( 65) used for the angle of rotation determination is screwed to the clamping sleeve ( 64).Seated in the stepped bore (54) of the spindle shaft (50) in the region of the spindle head is a collet (71) which is spring-loaded and the draw pin (72) of which, according to FIG. 8, projects at the front beyond the end face (51) of the spindle shaft (50). The mandrel (72) is fastened to a tension bolt (73) on which the disk springs are arranged in a row. The rear end of the tension rod screw ( 73) forms a disk spring plunger ( 74).The rear end of the spindle shaft (50) projects out of the central block (10). It is surrounded there at least partially by a spacer plate ( 78). The spacer plate (78) has a through bore (79), the center line of which runs congruently with the center line of the spindle shaft (50). In the through bore ( 79), a lubricant rotary bushing ( 80) accommodated, for example, in an at least approximately cuboidal housing ( 81) is arranged in a centered manner. In the housing (81) there is arranged an annular piston (87) hydraulically actuatable on one side, which has a base (88) with a central bore towards the spindle shaft (50). If the rear side of the piston remote from the spindle shaft is acted upon by hydraulic oil, the bottom (88) abuts the disk spring plunger (74) of the clamping device (70) in order to displace the drawing mandrel (72) in the opening direction. When the hydraulic oil pressure is released, a plurality of helical compression springs (89) supported on the housing (81) push the annular piston (87) back, so that the collet chuck (71) can transition back into its closed position under spring load.The housing (81) has a cover which carries a central hollow pin (82) which guides the annular piston (87). Seated in the rotationally secured hollow pin (82) is a hollow lubricant transfer shaft (83), which projects into the central bore of the disk spring plunger (74), in a rolling manner. The lubricant transfer shaft (83) is sealed with a sealing ring relative to the bore of the longitudinally displaceable disk spring plunger (74).The rotating lubricant transfer shaft ( 83) has an axially oriented sliding seal ring ( 84) on the rear side. The latter bears axially against a spring-loaded sliding sealing ring (85) fixed in a rotationally fixed manner. The sliding sealing ring (85) is fastened at the end face to a longitudinally displaceable sleeve (86). Via this sleeve ( 86), the gaseous and / or liquid coolant and / or lubricant is supplied from the cover, the central cavities of the lubricant transfer shaft ( 83) and the tension rod screw ( 73). In this way, each dynamic or static tool holder can have the required coolant and / or lubricant supplied.The magazine tube body (100), which is made of an aluminum alloy, has large, substantially rectangular recesses (105) on its periphery-corresponding to the number of its tool receiving rows (111)-for storing storage covers (110), so that it has the shape of a cylindrical cage which consists of two end-face rings (103) and, for example, eight longitudinal struts (104) connecting these. In the exemplary embodiment, the outer diameter is 640 mm with a wall thickness of 20 mm. The polar moment of inertia of the magazine tube body (100), including the magazine tube support cover (106), is about 4.3 kgm 2.According to FIGS. 10 and 11, the essentially cuboidal storage cover ( 110) has, on the rear side, a milled-in portion ( 112), which is for example circumferential and serves, inter alia, for centering and / or sealing. Each storage cover (110) fastened to the magazine tube body (100) by means of, for example, six screws has, on the end face, as many tool carrier step bores (113) as the magazine tube body (100) has tool receiving planes (101, 102). In the exemplary embodiment shown, the two are:. According to FIG. 6, for example, a dynamic tool holder (200), a dynamic tool holder (270) with semi-automatic tool change, a tool assembly (250), a static tool holder (310), a parallel gripper (340) or a blind cover (370) is mounted in the individual storage cover (110). Like the recesses (105), the storage cover (110) has four corner edges which are rounded in a stepped manner and whose center lines are oriented parallel to the center lines of the tool carrier stepped bores (113).For this purpose, the first step of the tool carrier step bore ( 113) constitutes a counterbore ( 114) for centered reception of, for example, a retaining ring ( 121), a retaining plate ( 299, 361) or a blind cover ( 370). The counterbore (114) is followed by a radial clearance portion (115). The latter is adjoined in a terminating manner by the cylindrical end section ( 116), through which the threaded sleeve ( 56) of the spindle shaft ( 50) projects with play, for example when using dynamic tool holders ( 200, 230, 250, 270). Each end section (116) has at least three partial depressions (117), which are at least approximately crescent-shaped in cross section and which engage corresponding division positioning elements (220) at least in the case of the dynamic tool holders (200, 230, 250, 270). Each partial counterbore (117) has, for example, a diameter of 10 mm. The cylinder on which the center lines of the partial depressions ( 117) lie around the center line of the tool carrier step bore ( 113) is, for example, 4 mm smaller than the inner diameter of the end section ( 116).Each storage cover (110) can have a gas and / or liquid coolant and / or lubricant supply in order to supply outwardly emitting coolant or lubricant nozzles installed in the storage cover (110)-for cooling or lubricating the machining point. For this purpose, the storage cover (110) is hydraulically connected to the magazine tube body (100) or the central block (10).If workpieces (9) of the same type are machined in the workpiece support slide (6), cf. FIG. 1, for example, during wear-related tool replacement or during refitting, the tool holders, including the tools, can be replaced completely with the respective storage cover (110) in a time-saving manner. If one or more tool holding rows (111) are not required for machining a row, the storage cover or covers (110) are replaced by thin-walled, light blind covers (370).The retaining ring (121) fastened to the storage cover (110) by means of screws (129), with which, for example, during the dynamic tool holder (230), the tool holder shaft (201) is held with axial and radial play, has a conical counterbore (122) in the region of its central recess, the cone angle of which is, for example, at 50 angle degrees. On the base (123) of the counterbore (122) there is a circumferential groove (124) with a rear engagement for receiving a sealing ring (125). The retaining ring (121), together with the storage lid (110), forms a grip-like receiving form (120), cf. FIG. 21, with which it surrounds the respective flange (204) of the stored dynamic tool receivers (200, 230, 250, 270) with play. Essentially, the magazine play of the flange ( 204) is limited by the conical counterbore ( 122) and the, e.g., flat, catch collar ( 119).For the fastening of static tool holders ( 310, 340), the storage cover ( 110) only requires the counterbore ( 114).The latter represents a flange-like receiving form (126), cf. FIG. 21.The dynamic tool holders (200, 230, 250, 270) are stored in the storage cover (110), provided that their tools (500) are in a magazine position. A simple dynamic tool holder (200), cf. FIGS. 6 and 10, comprises inter alia a tool holder shaft (201) which-after clamping into the spindle shaft (50)-is drawn with its cone (203) into the conical recess (55) of the spindle shaft (50) by means of the clamping device (70). For this purpose, the tool-receiving shaft ( 201) has a central recess ( 202) with a rear engagement. Behind the latter, the collet chuck (71) of the clamping device (70) engages.The tool receiving shaft (201) has a flange (204) on the outside in the rear region, cf. FIG. 11, with which it is fixed-even without being coupled to the spindle shaft (50)-in the corresponding recess (113) of the storage cover (110). The cylindrical flange ( 204) is chamfered on the front side, so that a frustoconical centering surface ( 205) is produced there. Its cone angle corresponds to the cone angle of the conical counterbore (122) of the retaining ring (121). In the rear end face of the flange (204), there are at least two blind holes (206), as a rule they can also be 16 or more pieces, with, for example, a flat hole base, cf. FIG. 11. Seated in each blind hole (206) is slidably a pot-shaped dividing positioning element (220), for example a helical compression spring (225) or a dividing positioning element (220) bearing a plurality of disk springs. The pitch positioning member (220) is inserted into the blind hole (206) such that its bottom (221) is oriented toward the spindle shaft (50). The helical compression spring ( 225) attempts here to push the graduation positioning element ( 220) out of the blind bore ( 206). In order to prevent the division positioning elements (220) from falling out, they have a collar (222) with which they are supported on the bore edges of a stop ring (207) screwed on the rear side of the flange (204). The bore edges belong to the bores from which the division positioning elements (220) protrude, cf. FIG. 11, Instead of the stop ring (207), short lugs can also be used, which are screwed to the flange (204) on both sides of the individual bore (206)-in the circumferential direction of the bore pattern.According to FIG. 11, cf. also FIG. 13, the sickle-shaped partial depressions ( 117) of the storage cover ( 110) lie coaxially opposite the blind-end bores ( 206), so that the dividing positioning elements ( 220) bear at least radially in the partial depressions ( 117). As a result, the tool-receiving shaft ( 201) is positioned in the magazine tube body ( 100) in a rotationally secure manner on the one hand and, on the other hand, the helical compression springs ( 225) press the flange ( 204) via the dividing positioning elements ( 220) in a centring manner into the retaining ring ( 121). At the same time, the front, flat end face of the flange (204) is pressed against the sealing ring (125). The base (123) of the counterbore (122) has a slight clearance with respect to the front planar face of the flange (204).The interior (108) of the two-part magazine tube body (100, 106) is largely sealed off from the environment and is under 0.5×10 5 Pa seal air overpressure. The blocking air additionally presses the tool holders ( 200, 230, 250, 270) into the conical centring means of the retaining rings ( 121).As shown in FIG. 6, the tool receiving shaft (201) of the simple dynamic tool receiving device (200) has, outside the magazine tube body (100), for example, a central conical recess (211) in which a collet (212) for clamping a twist drill (500) or the like is inserted.In FIGS. 10 to 15, the clamping of a dynamic tool holder ( 230) in the spindle shaft ( 50) is shown stepwise. FIG. 10 shows the magazine tube body ( 100) in its rotational position. To arrive at the position shown, it may have made a 360 degree angle rotation about the centerline (2) and / or (19) without having touched the center block (10) or the work spindle (40). In the position shown, the center lines (219, 41) of the tool holder (230) and of the work spindle (40) are aligned. The mandrel (72) of the clamping device (70) protrudes several tenths of a millimeter from the opening of the tool receiving shaft (201) of the tool receiving means (230). The hook tongues of the collet chuck (71) bear against the shank of the forwardly pushed draw mandrel (72).According to FIG. 11, the frustoconical centering surface ( 205) of the tool-receiving-side flange ( 204) bears tightly against the frustoconical surface of the counterbore ( 122) of the retaining ring ( 121). The division positioning elements (220) bear positively in the partial depressions (117) of the storage cover (110).According to FIG. 12, the magazine tube body ( 100) has been moved together with the storage cover ( 110) and the tool holder ( 230) in a stroke of, for example, 30 mm in the direction ( 29) toward the spindle shaft ( 50). The collet chuck ( 71) and the pulling mandrel ( 72) protrude into the rear engagement recess ( 202) of the tool receiving shaft ( 201), but without having to tension the collet chuck ( 71). According to FIG. 13, neither the end face ( 51) of the spindle shaft ( 50) abuts the flange ( 204), nor does the wall of the conical recess ( 55) contact the outer cone ( 203) of the tool receiving shaft ( 201).At the same time, the dividing positioning elements (220) have been pushed into a rear position by the contact with the end face (51) against the action of the helical compression springs (225), so that they no longer engage in the partial depressions (117) of the storage cover (110). The rotation prevention of the tool holder ( 230) with respect to the storage cover ( 110) is eliminated.The flange (204) has not changed its position relative to the retaining ring (121) at the transition from Fig. 11 to Fig. 13.According to FIG. 14, the mandrel (72) has been pulled into the spindle shaft (50). As a result, the hook tongues of the collet chuck (71) have come to rest against the rear of the recess (202) and spread. Due to the wedge effect of the collet in the rear engagement region, the tool holder ( 230) is pulled a few tenths of a millimeter against the end face ( 51) of the spindle shaft ( 50). The wall of the conical recess ( 55) contacts the outer cone ( 203) of the tool receiving shaft ( 201). Furthermore, the flange ( 204) abuts the end face ( 51), whereby a compressed air bore ( 69) leading to the end face ( 51) is at least largely closed. The test pressure present in the compressed air bore ( 69) recognizes the successful production of the spindle shaft / tool holder interface.By retracting the tool holder ( 230) in the direction of the spindle shaft ( 50) by, for example, 0.3 to 0.5 mm, the flange ( 204) is released all the way round, cf. FIG. 15, it now bears neither against the retaining ring ( 121) nor against the storage cover ( 110). The sealing ring ( 125) also does not contact the flange ( 204). The tool holder ( 230) is thus freely movable with respect to the storage cover ( 110). The magazine tube body (100) now has neither a supporting nor a guiding position. The gap present between the tool holder ( 230) and the storage cover ( 110) has the function of a labyrinth seal, via which small volumes of sealing air escape-in order to prevent the ingress of coolant and / or lubricant or other dirt.The dynamic tool holder ( 230) with an integrated hand clamp, cf. FIGS. 10, 12, 14, comprises a tool holder shaft ( 201). The latter has a central stepped bore (231) in the outer end face. In the large bore portion with the largest diameter, a cone sleeve ( 232) is inserted.The cone sleeve (232) is a stepped tubular body having a cone portion (233) and a bayonet portion (237). The conical inner wall of the cone section ( 233) serves for tool receiving. On the radial outer wall of the cone section ( 233), an annular cover ( 234) is guided which can be adjusted by several angular degrees. For guidance on the conical sleeve (232), it has, for example, two guide slots, cf. FIG. 2.The bayonet section ( 237) projects with a clearance of several tenths of a millimeter into the large bore section of the tool holder ( 230). The essentially cylindrical inner wall carries at least one bayonet web ( 238) for fixing a hand-held clamping insert ( 241).The conical sleeve ( 232) rests via its flat collar ( 236) on the outer end face of the tool receiving shaft ( 201). There, it is fastened with screws oriented parallel to the center line of the tool holder ( 230). In the large bore section there are at least three threaded bores bearing threaded pins distributed equidistantly on the circumference. With the threaded pins, the conical sleeve ( 232) is aligned radially with respect to the center line of the tool holder ( 230) in order to optimize the tool runout.In the cylindrical inner wall of the bayonet section ( 237), the hand-held clamping insert ( 241) engages around the bayonet webs ( 238). The hand-held clamping insert ( 241), cf. FIG. 14, is a bolt-shaped body which has at its rear end, for example, two webs for engaging behind the bayonet webs ( 238) of the conical sleeve ( 232). In the central region, it has two mutually opposite transverse grooves (242). A clamping jaw (245) is seated in each transverse groove (242). Each clamping jaw (245) has the shape of a segment of a circle in its cross section which is normal to the center line of the tool holder (230).In the web lying between the transverse grooves (242), there is a transverse bore into which a special threaded bolt (246) is inserted. Coaxial to this transverse bore, corresponding threaded bores are located in the clamping jaws (245). The special threaded bolt (246) carries a right-hand thread on one side and a left-hand thread on the other. Each thread projects into a clamping jaw (245). The special threaded bolt ( 246) has at its end face, for example, a tool recess for an Allen screwdriver.By rotating the special threaded bolt (246), the clamping jaws (245) are extended or retracted synchronously with one another. Each clamping jaw ( 245) also has a wedge surface against which a respective push-out pin ( 247) abuts with its wedge surface. The push-out pins ( 247), which are oriented parallel to the center line of the tool holder ( 230), protrude from the end face of the hand-held clamping insert ( 241) when the clamping jaws ( 245) are moved together.For manually clamping the tool with HSK tool shank, the tool is placed against the conical inner wall of the cone section (233). By a corresponding rotation of the ring cover (234) and of the tool, a tool recess of the special threaded bolt (246), a bore of the HSK tool shank and a bore of the ring cover (234) are brought into register. With a subsequent turning of the special threaded bolt ( 246), the clamping jaws ( 245) are pressed against the inner contour of the rear engagement recess of the HSK tool shank. The tool is now seated firmly in the tool holder ( 230).This tool holder ( 230) enables a free interface selection. For example, HSK ®-, Capto ®-, BENZ Solidfix ®- interfaces, and the like may be realized.In FIG. 16, an exchangeable tool assembly ( 250) is shown. The tool assembly (250), which belongs to the group of dynamic tool receptacles, accommodates in a collet (269) a twist drill (500), the center line of which is inclined by 30 degrees of angle with respect to the center line of the drive shaft (263).The tool assembly ( 250) bears, in a rolling manner in an assembly housing ( 261), the drive shaft ( 263) and an output shaft ( 267) which carries the collet chuck ( 269). The drive shaft (263) drives a spur gear (268) of the output shaft (267) via a crown gear (264).The unit housing (261) is screwed via a tubular retaining ring (257) by means of the screws (258) to the corresponding storage cover (110), cf. FIGS. 2 and 6. The tool receiving shaft (251), which is surrounded by the tubular retaining ring (257) and the storage cover (110), has, opposite its HSK recess (252), a bore (253) provided with an internal spline toothing (254). This inner spline (254) engages with an outer spline (265) fixed to the drive shaft (263).In FIGS. 17 and 18, a dynamic tool holder ( 270) is shown, with which a tool, which has an HSK interface ( 296), for example, can be inserted and prestressed semi-automatically.The tool holder (270) has a tool holder shaft (271). The outer cone (203), the flange (204), the retaining ring (121) and the division positioning elements (220) are already known from the above-described dynamic tool holders (200, 230). However, here the tool receiving shaft ( 271) has a central stepped bore ( 272) on the spindle shaft side, in which a multi-part clamping adapter ( 290) is guided. The stepped bore (272) has a collet guide zone (273) and a smaller diameter cylindrical zone (277). The multi-piece clamping adapter (290) is composed of a clamping sleeve (291), a piston rod portion (292), a piston (293) and a collet holding portion (294). The clamping sleeve ( 291) comprises the recess ( 202) provided with the undercut. With its outer contour, it is guided with little play in the stepped bore ( 272).The clamping sleeve ( 291) is adjoined by the, for example, screwed-in piston rod section ( 292). Seated on the latter is a prestressing ring (300), the radial outer wall of which bears against the clamping sleeve guide zone (273). In addition, the prestressing ring (300) is supported on the flat surface (276) located between the clamping sleeve guide zone (273) and the cylinder zone (277). The biasing ring (300) is axially held in this position by a retaining ring (278) seated in a retaining ring groove (274) disposed in the collet guide zone (273). Between the retaining ring groove (274) and the planar surface (276) is a retaining ring groove (275) in which an O-ring (279) is arranged. In order to seal the prestressing ring (300) also with respect to the piston rod section (292), the prestressing ring (300) carries an O-ring (308) in its radial outer wall in an annular groove (303).The pretensioning ring (300) has a multiplicity of blind holes (302) in its end face (301) facing the clamping sleeve (291). Seated in each blind bore ( 302) is a helical compression spring ( 305) which is supported on the clamping sleeve ( 291).According to FIG. 17, which shows the semi-automatic tool holder ( 270) in a pneumatically relaxed state without an inserted HSK tool shaft, the clamping sleeve ( 291) abuts the prestressing ring ( 300). All the helical compression springs (305) are compressed.At the forward end of the piston rod section (292) is the piston (293) which is sealed from the cylinder zone (277) by means of an O-ring. At the rear side of the piston ( 293), it faces the prestressing ring ( 300), compressed air is applied. In the exemplary embodiment, the compressed air is pumped by means of a compressed air blow gun via an elastomer adapter ( 127) seated in the retaining ring ( 121) into a system ( 128) comprising a plurality of bores. From there, the compressed air reaches the conical seat located between the retaining ring (121) and the flange (204). The conical centering surface ( 205) has, in the region in which the system ( 128) ends, a circumferential annular groove ( 208), which is operatively connected to a further system ( 209) of bores. This system has a bore (209) which opens into the rear cylinder space (289) of the cylinder zone (277). The compressed air introduced via the system ( 209) pushes the clamping adapter ( 290) to the left in FIG. 17.To the left of the piston (293), the collet holding portion (294) extends. The latter has a waist around which a multi-part collet (295) with its hook tongues is arranged. The collet hook section ( 294) widens in the manner of a truncated cone towards the free end in order to be able to expand the collet ( 295) by means of the surface in the form of a truncated cone shell.A conical sleeve (282) is seated around the collet chuck (295). It has a centering front groove ( 284) on the rear side, in which an annular web ( 280) arranged on the front front side of the tool receiving shaft ( 271) engages in a centering and fixing manner with a centering and external thread section ( 281).Toward the clamping adapter ( 290), the cone sleeve ( 282) has an inner cone ( 283) for fixing the position of the second interface. In the rear region of the conical sleeve (282) there is a positioning ring (286) which is axially secured forward by a securing ring (287) snapped into an annular groove (285). The positioning ring (286) engages around the catch lugs of the hook tongues of the collet chuck. It is sealed from the inner cone (283) by means of an O-ring (288).In this tool holder (270), a single tool can be exchanged by the operator during ongoing workpiece machining on the multi-level tube magazine (1), provided that the storage cover (110) of this tool is located on the other side of the multi-level tube magazine (1) which is accessible without risk. In this case, the operator grasps the tool located in the magazine position with one hand, while the operator places a compressed air blow gun on the elastomer adapter ( 127) with the other hand. When the compressed air blow gun is actuated, the clamping adapter moves pneumatically into its release position, cf. FIG. 17. the hook tongues of the collet (295) bear against the collet holding section (294), so that the tool can be pulled out of the inner cone (283) of the conical sleeve (282) without force.For replacing the replacement tool, this process is repeated. After the compressed air blow gun has been set down or locked, the helical compression springs ( 305) of the prestressing ring ( 300) push the clamping adapter ( 290) into its locking position, cf. FIG. 18 The inserted tool, not shown in FIG. 18, is now seated in the tool receptacle ( 270) prestressed by the helical compression springs ( 305). If this tool holder ( 270) is now positioned in front of the spindle shaft ( 50), the clamping jaw ( 71) of the own working spindle engages the clamping adapter ( 290) by engaging behind the recess ( 202). The tool holder ( 270) is pressed against the spindle shaft ( 50) via the clamping adapter ( 290). In this case, the collet chuck ( 295) of the second interface ( 296) is optionally additionally finally tensioned.FIG. 19 shows a static tool holder ( 310). This is seated firmly screwed via a storage cover (110) in the relatively elastic magazine tube body (100). The tool holder ( 310) generally has no mechanical connection to the work spindle ( 40). One exception can be transmission means with the aid of which, for example, lubricant and / or coolant is transmitted from the work spindle to the tool holder.The storage cover (110) is connected to the central block (10) in a switchable manner by means of a storage cover clamping system (400) in a dimensionally rigid manner. For this purpose, each storage cover ( 110) carries on its inner side, for example, six cover clamping sleeves ( 401). In this case, two cover clamping sleeves ( 401) are arranged in each case in the region of the narrow side surfaces of the storage cover ( 110). Two further cover clamping sleeves (401) are seated in the central region of the respective storage cover (110).The individual cover clamping sleeve ( 401) consists of a screw-in fitting shaft ( 405) and a clamping recess ( 402) with a rear engagement. With the screw-in fitting shaft ( 405), the cover clamping sleeve ( 401) is precisely fixed to the storage cover ( 110).Six hydraulic tensioners (410) are fastened in the central block (10) in a manner corresponding to the cover clamping sleeves (401) of the storage cover (110). For this purpose, there is one stepped bore ( 420) in the central block ( 10) per tensioner ( 410). The latter is divided into a screw-in and centering section (421) and a cylinder section (422). In the screwing-in and centring section (421), a screwing-in centring sleeve (416) is seated via its external thread. In the thread-free rear region, its centering section is located. In the front region, it has a rear grip behind which a collet (415) hooks. The free end face of the screw-in centering sleeve ( 416) has a centering recess ( 418), in which the cover clamping sleeve ( 401) can center itself.The tensioner ( 410) has a clamping element ( 411) for clamping in the cover clamping sleeve ( 401). The latter is a combination of a piston (412), a piston rod (413) and a clamping cone (414). The piston (412) is screwed on the rear end of the piston rod (413). The piston rod (413) penetrates the central bore of the screw-in centering sleeve (416). An O-ring is seated in the bore in an annular groove in order to provide a sealed hydraulic or pneumatic clamping space (423) between the screw-in centring sleeve (416) and the piston (412).For the secure docking of the storage cover (110) to the central block (10), the latter is brought up to the central block (10) via the magazine tube body (100) until the cover clamping sleeve (401) bears in a centered manner against the screw-in centering sleeve (416). The clamp (410), which hitherto remains in its front position, is hydraulically retracted by the piston (412) acting upon the clamping space (423) with pressure, whereby the collet (415) engages behind the cover clamping sleeve (401). Due to the spreading effect of the hook tongues of the collet chuck (415), the storage cover (110) is fixed to the central block (10) by being pulled on.A base plate (299) is optionally fastened on the storage cover (110), on which base plate the base body (311) of the static tool holder (310) is seated screwed, for example, in a bore, cf. also FIG. 2. the base body (311) has a stepped bore (312) in which the required clamping means are seated. In the front region of the stepped bore ( 312), a holder cone sleeve ( 313) is seated, against the inner wall of which the tool to be received bears. A clamping mandrel (315) carrying a collet chuck (317) is installed in the stepped bore (312). Behind the waist on which its collet chuck (317) abuts, the clamping mandrel (315) has a transverse recess (316) which is penetrated by a clamping shaft (320) mounted in the base body (311).The clamping shaft ( 320), which can be pivoted by 180 angular degrees, for example, has cylindrical sections outside the transverse recess ( 316), with which it is mounted in a sliding manner in the base body ( 311). In the transverse recess ( 316), it has the shape of a constant thickness ( 321), by means of which a clamping displacement effect of the clamping mandrel ( 315) results upon a rotation of the clamping shaft ( 320). For driving the clamping shaft ( 320), it has, for example, a hexagonal recess ( 322) in the free end face.FIG. 20 shows another static tool holder. It is a parallel gripper (340). The parallel gripper (340) has two gripper arms (355, 356) which can be moved in and out, for example, pneumatically. By means of the parallel gripper ( 340), workpieces can be picked up, for example, from the workpiece holder of the machine-side workpiece support slide ( 6) in order to deposit or pass them on elsewhere.The parallel gripper ( 340) is seated, for example, centrally on a base plate ( 361), which in turn is fastened in the storage cover ( 110). The parallel gripper ( 340) has a recess ( 342) in a lower housing ( 341), which is closed at the bottom by a lower housing cover ( 348). The bottom (343) of the recess (342) has a bore. The piston rod (345) of a piston (344), for example, oval, is sealingly guided in the bore.At the end remote from the piston, the piston rod (345) carries a double-sided wedge hook (357) which is guided in an upper housing (351). On both sides of the wedge hook (357), a slide (353, 354) carrying a gripping arm (353, 354) is guided in the upper housing (351). The wedge hook (357) engages positively with play behind a respective front recess of the slide (353, 354). The wedge hook (357) and the slides (353, 354) form two sliding wedge gears.In order to close the gripping arms (355, 356) which are in the open position in FIG. 20, compressed air is conveyed between the base (343) and the piston (344) via a line system (363). The piston (344) moving to the right pulls the slides (353, 354) towards one another via the wedge hook (357). The compressed air for this purpose is received by the parallel gripper, for example, via the line system ( 363). In the magazine tube body (100), compressed air is pumped from a channel into the lower housing (341) via the storage cover (110) and the base plate (361).To open the gripping arms (355, 356), the cylinder chamber located between the piston (344) and the lower housing cover (348) is pressurized via a further line system.Instead of a storage lid (110), a thin-walled blind lid (370) is used, cf. FIG. 6, if a tool receiving row (111) remains unused.List of reference numbers:1 Multilevel tube magazine 2 Center line, rotational center line of (1) 3 Machine tool 4 Portal stand 5 Stand recess 6 Workpiece support slide 7 Linear coordinates 8 Center line, rotational center line of (6) 9 Workpieces 10 Central block made of GGG40 11 Fastening side, on the rear 12 Guide rails, on the rear 13 End side, free, on the front 14, 15 Transverse recesses, large 16 Guide rails, on the front 17 Linear drive, cylinder-piston unit, hydraulically 18 Drive rod, piston rod 19 Center line of the central block 21 End slide, magazine tube carrier 22 Drive adapter 23 Guide carriage, recirculating ball guide, bearing 25 Rolling bearing, double-row flange shoulder bearing 26 End slide flange 27 Inner cover 28 Driven wheel 29 Displacement direction, guide direction 31 Rotational drive 32 Spur wheel, drive wheel 34 Guide carriage, recirculating ball guide, Bearing 35, 36 Bearing slide, Magazine tube carrier 37 Annular flange, flange 38 Needle bearing inner ring 39 Sealing ring 40 Working spindle, Motor spindle 41 Center line 42 Motor housing, tubular 43 Spiral groove 44 Inner flange 45 Shoulder bearing, front 47 Flange cover, flange-shaped 48 Shoulder bearing, rear 49 Flange sleeve 50 Spindle shaft 51 End face, end face 52 Bearing seat, front 53 External thread, front 54 Stepped bore 55 Recess, conical 56 Threaded sleeve 57 Threaded sleeve flange 58 Engaging 59 Circumferential groove, inner 60 Housing cover, front 61 Circumferential groove, inner 62 Balancing ring 63 Turned-in (60) for (66) 64 Clamping sleeve, rear 65 Measuring gearwheel 66 Double lip seal with metal ring 67 Inner lip, inner sealing lip 68 Outer lip, outer sealing lip 69 Compressed air bore 70 Clamping device 71 Collet 72 Drawing mandrel, Expansion mandrel 73 tension rod screw 74 disk spring plunger 78 spacer plate 79 through bore 80 lubricant rotary feedthrough 81 housing 82 hollow pin, centrally secured 83 lubricant transfer shaft 84 sliding sealing ring, rotating 85 sliding sealing ring, rotationally fixed 86 sleeve, longitudinally displaceable 87 ring piston 88 base with central bore 89 return springs, helical compression springs 90 electric motor, drive motor 91 stator 92 rotor 95 working position of a tool receptacle 96 magazine positions of a tool receptacle 100 magazine tube body, 2 planes, 8 rows 101, 102 tool receptacle planes, 1., 2.103 rings 104 longitudinal struts 105 recesses, rectangular 106 magazine tube support cover 107 base plate 108 interior space 109 center line 110 storage cover 111 tool receptacle row 112 milling, circumferentially, externally 113 tool carrier step bores, recess 114 counterbore 115 radial clearance section 116 end section, 117 Partial depressions, sickle-shaped, recesses 118 Bore for docking to (10) 119 Catching collar, planar 120 Receiving shape, engaging-around 121 Retaining ring 122 Depression, conical 123 Base 124 Circumferential groove with undercut 125 Sealing ring 126 Receiving shape, flange-like 127 Elastomer adapter 128 System of bores 129 Screws 200 Tool receiving, dynamic, simple 201 Tool receiving shaft 202 Recess with undercut, central rear engaging recess 203 Outer cone, cone 204 Flange 205 Centering surface, frustoconically outer-surface-shaped; conical region of (204) 206 Blind-hole bores 207 Stop ring 208 Annular groove 209 System of bores 211 Recess in (201), conical 212 Collet 219 Center lines of the dynamic tool receiving means 220 Division positioning element, pot-shaped 221 Base 222 Collar 225 Helical compression spring 230 Tool receiving means, dynamic; cylindrical; Hand clamp 231 stepped bore, central 232 cone sleeve 233 cone section 234 annular cover 235 lead screw 236 planar collar 237 bayonet section 238 bayonet web 241 hand clamp insert 242 transverse grooves 245 clamping jaws 246 special threaded bolt 247 push-out pins 250 tool assembly, tool holder, dynamic 251 tool holder shaft 252 HSK recess 253 bore, central 254 internal spline 257 retaining ring, tubular 258 screws 261 assembly housing 263 drive shaft 264 crown gear 265 external spline 267 output shaft 268 spur gear 269 clamping jaw 270 tool holder, dynamic; semi-automatic 271 tool holder shaft 272 stepped bore, Central 273 clamping sleeve guide zone 274 Locking ring groove 275 Sealing ring groove 276 Planar surface 277 Cylinder zone 278 Locking ring 279 O-ring 280 Annular web 281 Centering and external thread section 282 Conical sleeve 283 Inner cone 284 Centering end groove 285 Annular groove 286 Positioning ring 287 Locking ring 288 O-ring 289 Cylinder chamber 290 Clamping adapter 291 Clamping sleeve 292 Piston rod section 293 Piston 294 Collet holding section 295 Collet, 2nd Interface 296 HSK interface, 2nd Interface 299 Base plate, holding plate 300 Prestressing ring 301 End face, rearward 302 Blind hole bores 303 Annular groove 305 Helical compression springs 308 O-ring 310 Tool holder, statically 311 Base body 312 Stepped bore 313 Holder conical sleeve 315 Clamping mandrel 316 Transverse recess 317 Collet 320 Clamping shaft 321 Uniform thickness 322 Hexagonal recess, Hexagonal socket 340 parallel gripper, static tool holder 341 lower housing 342 recess, oval 343 bottom 344 piston, oval 345 piston rod 348 lower housing cover 351 upper housing 353, 354 slide 355, 356 gripper arms 357 wedge hooks 361 base plate, holding plate 363 line system 370 blind cover 400 storage cover clamping system 401 cover clamping sleeve 402 clamping recess with undercut 405 screw-in fitting shaft 410 tensioner, hydraulically 411 clamping element 412 piston 413 piston rod 414 clamping cone 415 collet 416 screw-in centering sleeve 418 centering recess 420 stepped bore 421 screw-in and centering section 422 cylinder section 423 clamping space 500 tool, twist drill

Claims

Machine tool (3) comprising a workpiece support slide (6), characterized in that the machine tool (3) further comprises at least one multilevel tube magazine (1) with a plurality of tool receiving levels (101, 102) and tool receiving rows (111), in the interior space (108) of which a plurality of work spindles (40), one rigid central block (10) arranged in a fixed manner per tool receiving level (101, 102), are mounted, wherein the central block (10) stores a one- or multipart magazine tube carrier (21, 35, 36) which is displaceable driven transversely to the central-block center line (19), wherein the one- or multipart magazine tube carrier (21, 35, 36) stores a magazine tube body (100, 106) with storage covers (110) having a plurality of tool receiving levels (101, 102) and tool receiving rows (111), which magazine tube body is rotatable driven about the central block (10), wherein the work spindles (40) are arranged next to one another and their center lines (41) are oriented parallel to the displacement direction (29) of the magazine tube carrier (21, 35, 36) and wherein tools (500) with tool holders (230) are deposited in the magazine tube carrier (21, 35, 36) in such a way that the work spindles (40) can receive the tools (500) with the tool holders (230) and thus the tool holders (230) are movable with respect to the respective storage cover (110).Machine tool (3) according to claim 1, characterised in that the machine tool (3) is based on a portal stand (4) on the front wall of which the multi-level tube magazine (1) is mounted.Machine tool (3) according to Claim 2, characterized in that the magazine tube body (100, 106) bears sealingly on the rear side against a fixed base plate (107), and in that the base plate (107) is fastened to the machine tool (3) in the region of the rear side of the central block (10).Machine tool (3) according to Claim 2 or 3, characterized in that the central block (10) is rigidly fastened on the end face, with its rear fastening side (11), to the portal stand (4) of the machine tool (3) which carries it.Machine tool (3) according to one of claims 2 to 4, characterised in that the central block (10) essentially represents an octagonal straight prism and that a height and / or width of a fastening surface of the prism is greater than 60 percent of the maximum diameter of the rotatable magazine tube body (100, 106).Machine tool (3) according to one of Claims 2 to 5, characterized in that the portal stand (4) has a stand recess (5) from which the workpiece carrying slide (6) projects.Machine tool (3) according to one of Claims 2 to 6, characterized in that the workpiece support slide (6) is mounted in the portal stand (4) in such a way that the workpiece support slide (6) can be moved in the x-, y- and z-direction (7).Machine tool (3) according to one of Claims 2 to 7, characterized in that the workpiece support slide (6) has a rotational centre line (8), about which the workpiece support slide (6) can pivot.Method of a machine tool (3) for clamping a dynamic tool holder (230) in a spindle shaft (50) of a multilevel pipe magazine (1) having a plurality of tool holder levels (101, 102) and tool holder rows (111), comprising the steps: - moving a magazine pipe body (100, 106) of the multilevel pipe magazine (1) together with a storage cover (110) and a tool holder (230) in the direction (29) onto a spindle shaft (50) mounted in a dimensionally rigid central block (10) arranged in a fixed manner on the machine tool side, as a result of which the tool holder (230) is prevented from rotating relative to the storage cover (110), and - pulling a pulling pin (72) of a clamping device (70) of the spindle shaft (50) into the spindle shaft (50), whereby a flange (204) of the tool holder (230) is released all around from a storage cover (110) of the magazine tube body (100, 106) and the tool holder (230) is movable relative to the storage cover (110).Method according to claim 9, further comprising the step of detecting successful establishment of an interface between the spindle shaft (50) and the tool holder (230) by a test pressure present in a compressed air bore (69), wherein the compressed air bore (69) is at least largely closed by the flange (204) being placed against an end face (51) of the spindle shaft (50).The method of claim 9 or 10, further comprising the step of applying a seal air pressure in an interior space (108) of the magazine tube body (100, 106) such that a gap present between the tool receiver (230) and the storage lid (110) functions as a labyrinth seal.Revolving multilevel pipe magazine (1) with a plurality of tool receiving levels (101, 102) and tool receiving levels (111) for a machine tool (3) comprising: - a dimensionally stable central block (10) which can be arranged in a fixed manner on the machine tool side, - a plurality of work spindles (40), one for each tool receiving level (101, 102) which are mounted in the central block (10), - a single- or multipart magazine pipe carrier (21, 35, 36) which is displaceable with respect to the central block (10), driven transversely to the central-block center line (19), and - a magazine pipe body (100, 106) having a plurality of tool receiving levels (101, 102) and tool receiving levels (111) and having storage lids (110) and tools (500) stored therein and having tool receiving means (230, 250, 310), wherein the magazine pipe body (100, 106) is rotatable, driven about the central block (10), wherein the work spindles (40) are arranged next to one another and their center lines (41) are oriented parallel to the displacement direction (29) of the magazine tube carrier (21, 35, 36), and wherein the tools (500) with the tool holders (230, 250, 310) are deposited in the magazine tube carrier (21, 35, 36) in such a way that the work spindles (40) can receive the tools (500) with the tool holders (230, 250, 310) and thus the tool holders (230, 250, 310) are movable with respect to the respective storage cover (110).Revolving multilevel tube magazine (1) according to claim 12, characterised in that a storage cover (110) can take over as many tool receiving means (230) as the magazine tube body (100, 106) has tool receiving levels (101, 102).Revolving multilevel tube magazine (1) having a plurality of tool receiving levels (101, 102) and tool receiving rows 111), in the interior space (108) of which a plurality of work spindles (40), one rigid central block (10) arranged in a fixed manner per tool receiving level (101, 102), are mounted, - wherein the central block (10) rolls and / or slides a one- or multipart magazine tube carrier (21, 35, 36) which is displaceable, driven transversely to the central block center line (19), - wherein the one- or multipart magazine tube carrier (21, 35, 36) rolls or slides a magazine tube body (100, 106) having a plurality of tool receiving levels (101, 102) and tool receiving rows (111), which magazine tube body is driven rotatably about the central block (10), - wherein the magazine tube body (100, 100, 35, 36), 106) for each tool holder row (111), a storage lid (110) for the magazine of a plurality of tool holders (200, 230, 250, 270, 310, 340), the number of which corresponds at most to the number of tool holder planes (101, 102), - wherein the storage lid (110) with the tool holders (200, 230, 250, 270, 310, 340) required for the workpiece machining can be positioned in front of the front end sides (51) of the work spindles (40) both in the circumferential direction of the magazine tube body (100, 106) and in the displacement direction (29) of the magazine tube carrier (21, 35, 36) - in a working position (95), and - wherein the work spindles (40) are arranged next to one another and their centre lines are oriented parallel to the displacement direction (29) of the magazine tube carrier (21, 35, 36).Revolving multilevel pipe magazine (1) according to one of claims 12 to 14, characterised in that a respective working spindle (40) is mounted in individual transverse recesses (14, 15) of the central block (10), in that the respective working spindle (40) has a tubular motor housing (42), in the radial outer wall of which a spiral groove (43) is worked, in that the spiral groove (43) receives a closed channel cross-section through the inner wall of the transverse recess (14, 15), and in that coolant for an electric motor (90) of the respective working spindle (40) can be guided in the spiral groove (43).Revolving multilevel pipe magazine (1) according to one of Claims 12 to 15, characterized in that the storage covers (110) are substantially cuboidal and have a milled-in portion (112) on the rear side.Revolving multilevel pipe magazine (1) according to one of claims 12 to 16, characterized in that each storage cover (110) has a gaseous and / or liquid cooling and / or lubricant supply in order to supply outwardly emitting cooling or lubricant nozzles installed in the storage cover (110) for cooling or lubricating a machining location.Revolving multilevel pipe magazine (1) according to claim 17, characterized in that the respective storage cover (110) is hydraulically connected to the magazine pipe body (100, 106) or to the central block (10).

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