PRODUCTION CELL WITH TOOL CARRIER

Description

[0001] The invention relates to a manufacturing cell with a machine tool having a tool carrier carrying at least two tool units and comprising two adjacent workpiece paths oriented in a longitudinal direction, wherein the tool units are movable relative to a machine bed of the machine tool at least in a transverse direction oriented normal to the longitudinal direction and in a vertical direction oriented normal to these two directions, wherein for each workpiece path at least one workpiece carriage of the workpiece path is movable in the longitudinal direction along the machine tool and wherein the tool unit is movable in the longitudinal direction relative to the machine bed and / or relative to the workpiece carriage.

[0002] FR 3 056 932 A1 discloses a manufacturing cell. In this cell, two workpieces mounted on coupled carriages are machined simultaneously using two tool units arranged on a gantry.

[0003] DE 102 14 554 A1 discloses a machining center with an interchangeable machining fixture. The individual workpieces are clamped onto three parallel conveyor belts by means of rotating clamping devices.

[0004] EP 1 810 803 A1 discloses a gantry machining center with two workpiece paths for machining and two feed paths arranged adjacent to them. The workpiece to be machined is lifted from the feed path onto the workpiece path by means of a parallel gripping device. Each machining device machines one workpiece on one workpiece path.

[0005] The present invention is based on the problem of increasing the output rate of a manufacturing cell while maintaining high flexibility.

[0006] This problem is solved with the features of the main claim. To this end, the tool carrier overlaps or projects beyond the workpiece paths, each of which has a workpiece supply area of a workpiece supply and a work area of the machine tool. Each tool unit can be used both to machine a workpiece on the first workpiece path and to machine a workpiece on the second workpiece path. Each workpiece carriage can also be moved longitudinally along the workpiece supply. Furthermore, the workpiece supply has at least one lowerable or tiltable stop device for each workpiece path.

[0007] The production cell has two parallel workpiece paths along which a workpiece to be machined is conveyed. The conveyor devices for both workpiece paths have workpiece carriages that guide the workpiece to be machined. These workpiece carriages can be moved independently of one another in the longitudinal direction of the production cell. The tool carrier overlaps or projects beyond both tool paths, so that the individual tool unit can be used to machine a workpiece on the first workpiece path as well as a workpiece on the second workpiece path. The provision of a second workpiece and the movement of this second workpiece into the work area of the machine tool can take place while a first workpiece is being machined. Because the machining operations on the individual workpieces are independent of one another, a high output rate can be achieved even with a batch size of one.

[0008] The production cell can be designed for manual or automatic workpiece loading and unloading. It can be arranged individually in the material flow or, in the case of interlinked production, integrated into a production line. Such interlinked production can be rigid or flexible. The production cell can be designed to enable complete machining of the workpiece without reclamping.

[0009] Further details of the invention emerge from the subclaims and the following description of schematically illustrated embodiments. Figure 1: Manufacturing cell; Figure 2: Workpiece preparation; Figure 3: Cross-feed device; Figure 4: Stop bar; Figure 5: Workpiece carriage; Figure 6: Machine tool; Figure 7: Vacuum block group; Figure 8: Tool gantry; Figure 9: Variant of the manufacturing cell.

[0010] The Figure 1 - 8show a manufacturing cell (10) and some of its assemblies. The manufacturing cell (10) shown comprises a workpiece supply (21) and a machine tool (61) linked to the workpiece supply (21). The individual workpieces (1; 2) to be machined by the machine tool (61) are conveyed by means of a conveying device (111) from the workpiece supply (21) to the machine tool (61) and to the workpiece removal point. In the exemplary embodiment, the workpiece removal takes place after machining in the workpiece supply (21). However, it is also conceivable to arrange the respective workpiece removal point spatially separate from the workpiece supply (21). The transport of the workpiece (1; 2) from the workpiece supply (21) to the machine tool (61) takes place in a first conveying direction (112).For removal, the workpiece (1; 2) in this embodiment is transported in a second conveying direction (113) directed opposite to this first conveying direction (112). The conveying directions (112, 113) are oriented in the longitudinal direction (5) of the production cell (10).

[0011] The manufacturing cell (10) has two workpiece paths (11, 12). These are located next to one another. They have the same longitudinal direction (5). Each of the workpiece paths (11; 12) has a workpiece supply area (22; 23) and a work area (62; 63). The work area (62; 63) is arranged in the machine tool (61). The respective work area (62; 63) is the cuboid-shaped spatial area, for example, in which the individual workpiece (1; 2) interacts with the machining tool unit (101 - 104).

[0012] The workpiece provision (21), cf. Figure 2, in the exemplary embodiment comprises a bed (24) which carries two adjacent support roller conveyors (25, 26), a transverse thrust device (41) and two stop devices (52, 53) which are seated, for example, on a common stop bar (51). The bed (24) has external workpiece carriage guide rails (28) and conductor tracks (29). These continue on the machine bed (64) of the machine tool (61). Workpiece carriages (114 - 117) of the conveyor device (111) can be moved along the workpiece carriage guide rails (28). The conveyor device (111) comprises, in the exemplary embodiment, two workpiece carriages (114, 115; 116, 117) per workpiece path (11; 12). The power supply and control of the self-propelled workpiece carriages (114 - 117) is carried out by means of the conductor tracks (29). It is also conceivable to use only one workpiece carriage (114; 115; 116; 117) per workpiece path (11; 12).

[0013] The individual support roller conveyor (25; 26) comprises a plurality of support rollers (27) arranged transversely to the conveying direction (112) and parallel to one another. These can be rigid or, for example, mounted on roller bearings on a rigid axis. In the exemplary embodiment, all support rollers (27) are identical to one another. The width of the individual support roller (27) is generally greater than or equal to the maximum width of a workpiece (1; 2) to be machined in the transverse direction (6). The support rollers (27) project in the vertical direction (7) beyond the lateral support roller supports (31) oriented in the longitudinal direction (5).

[0014] In the Figure 3a transverse thrust device (41) is shown. In the exemplary embodiment, this has a rake (42) that can be moved in the transverse direction (6). The transverse thrust device (41) has two transverse guides (32) anchored in the bed (24), each of which carries a transverse slide (43) that can be moved relative thereto. The stroke of the transverse slide (43) in the transverse direction (6) is, for example, 40% greater than the width of a support roller conveyor (25; 26) in this direction. The two transverse slides (43) are, for example, driven synchronously with one another.

[0015] On each of the cross slides (43) there is a lifting device (44) which acts on a height-adjustable tine carrier (45) of the rake (42) which is oriented in the longitudinal direction (5). Both lifting devices (44), which can be hydraulically operated for example, are coupled so that the tine carrier (45) is always horizontal. Tines (46) protrude upwards from the tine carrier (45). In the exemplary embodiment, the tines (46) are cylindrical pins. When the rake (42) is mounted and raised, the tines (46) are located, for example, between two support rollers (27) of a support roller conveyor (25; 26). The lifting devices (44) are designed such that when the tines (46) are extended, they project 70% of the stroke above the support plane of the support roller conveyor (25; 26). When the lifting device (44) is lowered, the tines (46) are sunk below the support plane of the support roller conveyor (25; 26).The support plane of the support roller conveyor (25; 26) that is tangent to the upper side of the support roller conveyor (25; 26) is also referred to below as the conveying plane of the production cell (10). Instead of a rake (42), the transverse pusher device (41) can also have a pivoting lever, a pusher wedge, etc.

[0016] The Figure 4shows a stop bar (51). This is oriented in the transverse direction (6) and arranged at the end of the workpiece supply (21) facing the machine tool (61). The stop bar (51) has a pin carrier (54) which carries two stop devices (52, 53), each with two stop pins (55; 56). Each stop pin (55; 56) can be adjusted between a retracted and an extended position by means of a double-acting cylinder (57). In the extended position shown, the stop pins (55, 56) project above the conveying plane with a height of 85% of their vertical stroke. In the retracted position, the stop pins (55, 56) lie below the conveying plane. The stroke adjustment of the hydraulic cylinders (57) takes place, for example, in groups per stop device (52; 53).

[0017] In the Figure 5A workpiece carriage (114; 115; 116; 117) is shown. The production cell (10) shown in the exemplary embodiment has four identical workpiece carriages (114 - 117). Two of these workpiece carriages (114, 115) are guided along the right-hand side of the production cell (10), as seen in the conveying direction (112), and the other two workpiece carriages (116, 117) are guided along the left-hand side. More or fewer workpiece carriages (114 - 117) than the number shown can also be used.

[0018] The individual workpiece carriage (114; 115; 116; 117) has a guide unit (121), a drive unit (125), and a gripping unit (131). These units (121, 125, 131) are integrated into a housing (118). In the exemplary embodiment, a docking coupling (141) is arranged on the outside of the housing (118).

[0019] The guide unit (121) comprises a recirculating ball bearing (122) which, when the workpiece carriage (114; 115; 116; 117) is mounted, engages around the workpiece carriage guide rail (28) of the workpiece supply unit (21) and / or the workpiece carriage guide rail (67) of the machine tool (61). The workpiece carriage guide rails (28, 67) are mounted on the bed (24) of the workpiece supply unit (21) or on the machine bed (64) of the machine tool (61) oriented in the longitudinal direction (5).

[0020] The drive unit (125) has a power and signal supply (126). When the workpiece carriage (114; 115; 116; 117) is mounted, this is spring-loaded and connected to the conductor tracks (29) of the bed (24) or the machine bed (64). A drive motor arranged in the workpiece carriage (114; 115; 116; 117) drives a drive gear (127), which, when the workpiece carriage (114; 115; 116; 117) is mounted, meshes with a rack (33) attached to the side of the bed (24) or the machine bed (64).

[0021] The gripping unit (131) is arranged above the guide unit (121). It comprises a parallel gripping device (132) with two clamping jaws (133, 134) that can be moved relative to one another. In the exemplary embodiment, both clamping jaws (133, 134) are movable relative to the housing (118) of the workpiece carriage (114; 115; 116; 117). The opening and closing directions of the parallel gripping device (132) are oriented in the height direction (7). A height adjustment of the entire gripping unit (131) relative to the guide unit (121) is also conceivable. In this case, both clamping jaws (133, 134) can also be individually driven and height-adjustable.

[0022] The gripping unit (131) can also be designed asymmetrically. For example, the lower clamping jaw (134) can have a shorter stroke than the upper clamping jaw (133).

[0023] The docking coupling (141), for example, has an extendable plunger (142) and a plug (143). The plug (143) can be used to transmit electrical energy, data, and / or media, e.g., compressed air for pneumatic functions. In the exemplary embodiment, a vacuum block assembly (71) of the machine tool (61) can be coupled to the docking coupling (141). The individual workpiece carriage (114; 115; 116; 117) can also be designed without the docking coupling (141).

[0024] The Figure 6shows the machine tool (61) of the production cell (10). Two workpiece tables (65) are arranged next to one another in the machine bed (64). The parting line between the two workpiece tables (65) runs in the vertical central longitudinal plane of the machine bed (64). Each of the workpiece tables (65) comprises several suction block groups (71). The individual suction block groups (71) are guided in the machine bed (64) so that they can move in the longitudinal direction (5). For this purpose, the machine bed (64) has suction block guideways (66) oriented in the longitudinal direction (5). Furthermore, a chip removal device can be arranged in the machine bed (64).

[0025] In the Figure 7a vacuum block group (71) is shown. All vacuum block groups (71) are constructed in the same way. The individual vacuum block group (71) has a support beam (72) with two guide groups (73) for guidance along the machine bed (64). The individual guide group (73) has two guide shoes (74) spaced apart from one another in the longitudinal direction (5), between which a hydraulically or pneumatically releasable clamping device (75) is located. This clamping device (75), which closes e.g. under spring load, secures the position of the vacuum block group (71) relative to the machine bed (64) in the longitudinal direction (5).

[0026] The support beam (72) is oriented in the transverse direction (6). It supports, for example, three adjacent suction elements (76). These have an approximately rectangular suction surface (77) with four suction cups (78). In the illustrated embodiment, the suction elements (76) are individually height-adjustable. However, they can also be rigid. Each suction element (76) and / or each suction cup (78) can be individually controlled by negative pressure.

[0027] A support device (81) is arranged on the support beam (72). This support device (81) has a lifting device (82) which has a central lifting cylinder (83) and two guide cylinders (84). The lifting device (82) carries a transverse support roller (85). The support roller (85) is rotatably mounted, for example, in a U-shaped support beam (86). A rigid arrangement of the individual support rollers (85) is also conceivable. The lifting device (82) is designed such that the support plane, which lies parallel to the conveying plane and tangent to the upper surface line of the support roller (85), can be adjusted from a standby position below the suction surface (77) to a support position above the suction surface (77).

[0028] A support beam coupling (79) is arranged on the front side of the support beam (72). This coupling is designed, for example, to complement the docking coupling (141) of the workpiece carriages (114-117).

[0029] Below the workpiece carriage guide rails (67), on the outside of the machine bed (64), are gantry guide rails (68). The gantry guide rails (68) guide a tool carrier (91) in the form of a tool gantry (91), which in the exemplary embodiment carries three tool units (101; 102; 103). The tool gantry (91) can be moved in the longitudinal direction (5) along the machine bed (64) by means of a drive device (not shown here). The drive device of the tool gantry (91) can, for example, be designed in the same way as the drive unit (125) of the workpiece carriages (114 - 117). However, a drive by means of a ball screw drive, a gear train, etc. is also conceivable. If necessary, the respective position of the tool gantry (91) can be secured by means of a clamping device. The tool gantry (91) spans both workpiece paths (11, 12).In the exemplary embodiment, it is located outside the workpiece carriages (114 - 117) so that they can move unhindered within the tool portal (91).

[0030] The Figure 8shows the tool gantry (91). The tool gantry (91) has a U-shaped gantry support (92). At the free ends of the gantry support (92) there are recirculating ball bearings (93) which engage around the gantry guide rails (68). The upper central beam (94) of the gantry support (92) carries the tool units (101 - 103). For this purpose the central beam (94) has support and guide rails (95) running in the transverse direction (6). The support and guide rails (95) are arranged on both end faces of the central beam (94) pointing in the longitudinal direction (5). Each of the tool units shown (101 - 103) is mounted on these support and guide rails (95) by means of a cross slide (105). The individual tool unit (101 - 103) can thus be moved in the transverse direction (6) and in the vertical direction (7) oriented normal to the conveying plane.Each of the tool units (101-103) can also be designed to be movable in the longitudinal direction (5) relative to the tool gantry (91). All tool units (101-103) can machine workpieces (1; 2) on both workpiece paths (11, 12).

[0031] The tool carrier (91) can also be L-shaped. It is then mounted on one side of the machine bed (64), for example, so that it can be moved, and projects beyond both workpiece paths (11, 12). In such an embodiment, the workpiece carriages (114, 115; 116, 117) move along at least one workpiece path (11; 12) between the machine bed (64) and the tool carrier (91).

[0032] The tool units (101-103) shown in the exemplary embodiment are a 5-axis head (101), a drilling unit (102), and a gluing unit (103). In the exemplary embodiment, the 5-axis head (101) carries a driven side milling cutter (106) that can be pivoted about a horizontal pivot axis (107). Furthermore, this unit can be pivoted or rotated about a vertical axis (108).

[0033] The drilling unit (102) has several drilling and milling tools (109) that can be individually engaged with the workpiece. The drilling unit (102) is designed to be pivotable about a vertical axis, for example.

[0034] On the side of the tool gantry (91) facing away from the 5-axis head (101) and the drilling unit (102), the gantry supports the gluing unit (103). The gluing unit (103) can be used, for example, to apply a workpiece coating to the workpiece (1; 2).

[0035] An edge bander (104) is also located on the workpiece portal (91). This can be used to coat the edges of the workpiece (1; 2).

[0036] In the production cell (10), for example, no workpiece (1; 2) is initially provided in the workpiece provision area (21). At least two workpiece carriages (114, 115; 116, 117) are positioned on one side in the area of the workpiece provision area (21). The gripping units (131) of these workpiece carriages (114, 115; 116, 117) are open. The rake (42) of the transverse pushing device (41) is lowered. A first workpiece (1; 2) is deposited in the workpiece provision area (21), for example by means of a hall conveyor device. This first workpiece (1; 2) is, for example, plate-shaped. It consists of, for example, wood, plastic, aluminum, steel, a composite material, etc. The deposited workpiece (1; 2) is, for example, only roughly oriented during depositing. For example, the longitudinal direction of the workpiece can deviate by 30 degrees from the longitudinal direction (5) of the production cell (10).

[0037] After the first workpiece (1; 2) has been deposited, the rake (42) moves in the transverse direction (6) until it rests on the side of the workpiece (1; 2) facing away from the workpiece carriages (114, 115; 116, 117). The lifting devices (44) then raise the tine carrier (45) and the tines (46) until the tines (46) protrude above the conveying plane. The rake (42) can now move the first workpiece (1; 2) toward the gripping units (131) of the workpiece carriages (114, 115; 116, 117) until the workpiece (1; 2) lies between the clamping jaws (133, 134). In this case, the workpiece (1; 2) is aligned such that the longitudinal side (3) of the workpiece held in the gripping units (131) is oriented in the longitudinal direction (5) of the production cell (10).

[0038] Manual loading and / or alignment of the workpiece (1; 2) is also conceivable. In this case, the workpiece (1; 2) placed on the support rollers (27) is pushed by the operator to the workpiece carriages (114, 115; 116, 117) of the workpiece path (11; 12) intended for processing.

[0039] After the gripping units (131) close, the workpiece carriages (114, 115; 116, 117) pull the workpiece (1; 2) along the support rollers (27) in the conveying direction (112) until the workpiece (1; 2) rests against at least one stop pin (55; 56) of the workpiece track (11; 12). It is also conceivable that, upon closing the gripping units (131), the workpiece (1; 2) is lifted from the support roller track (25; 26) by a small amount, e.g., less than five millimeters. For example, it then lies parallel to the conveying plane. The position of the workpiece (1; 2) relative to the workpiece carriages (114, 115; 116, 117) can be determined from the workpiece position on the stop device (52; 53) and the position of the workpiece carriages (114, 115; 116, 117) relative to the bed (24) in the longitudinal direction (5).

[0040] In the machine tool (61), the position of the suction block groups (71) in the longitudinal direction (5) is adjusted, for example, using free workpiece carriages (114, 115; 116, 117) or by means of adjustment carriages. When adjustment carriages are used, these are constructed, for example, like the workpiece carriages (114 - 117), but do not have a gripping unit (131). To adjust the individual suction block group (71), a workpiece carriage (114; 115; 116; 117) is coupled to a suction block group (71) by means of the docking coupling (141). The clamping of the suction block group (71) on the suction block guideway (66) is released, and the workpiece carriage (114; 115; 116; 117) moves the suction block group (71) to the desired position for each workpiece. Furthermore, those suction elements (76) located in the area of the workpiece (1; 2) to be machined are lowered. This prevents, for example, damage to the suction block assembly (71) during machining of the workpiece (1; 2).The workpiece carriage (114; 115; 116; 117) is then uncoupled from the suction block group (71) and the clamping device (75) of the suction block group (71) on the machine bed (64) is activated.

[0041] The suction block groups (71) can also be adjusted using the workpiece carriages (114, 115; 116, 117) conveying the workpiece (1; 2). For this purpose, for example, after the workpiece (1; 2) has been placed on the support rollers (85), the gripping unit (131) of a workpiece carriage (114; 115; 116; 117) is opened, while at least one other workpiece carriage (115; 114; 117; 116) holds the workpiece (1; 2). Using the free workpiece carriage (114; 115; 116; 117), one or more of the suction block groups (71) can now be adjusted. After the workpiece (1; 2) has been clamped again by means of this workpiece carriage (114; 115; 116; 117), another workpiece carriage (115; 114; 117; 116) can be used to adjust further suction block groups (71).

[0042] The suction block groups (71) can also be individually movable relative to the machine bed (64). For this purpose, for example, each suction block group (71) has a drive unit that rolls, for example, on a rack on the machine bed. In such an embodiment, the docking couplings (141) of the workpiece carriages (114; 115; 116; 117) and the support beam couplings (79) of the suction block groups (71) can be omitted. For example, the adjustment of the suction block groups (71) in the longitudinal direction (5) takes place workpiece-specifically during the alignment of the workpiece (1; 2) to be machined in the workpiece preparation (21).

[0043] After the stop pins (55; 56) of the first workpiece path (11; 12) have been lowered, the workpiece carriages (114, 115; 116, 117) move the first workpiece (1; 2) further in the conveying direction (112) to the machine tool (61). Here, the workpiece carriages (114, 115; 116, 117) are stopped so that the workpiece (1; 2) lies on the support rollers (85) at the intended position in the respective work area (62; 63) of the machine tool (61). Subsequently, for example, the provided suction elements (76) are raised and / or the support rollers (85) are lowered until the workpiece (1; 2) rests on the provided suction elements (76). The support rollers (85) are lowered further until they are below the working area (62; 63) of the tool units (101 - 103).

[0044] It is also conceivable to raise the support rollers (85) after positioning the workpiece carriages (114, 115; 116, 117) so that after opening the gripping elements (131), the respective workpiece (1; 2) lies on the support rollers (85). The support rollers (85) are then lowered by means of the support roller lifting devices (82) until they are below the support level. The workpiece (1; 2) is then placed on the suction elements (76). The gripping units (131), for example, which are height-adjustable, can continue to hold the workpiece (1; 2).

[0045] The first workpiece (1; 2) is secured in the processing position by means of a vacuum pump acting on the suction cups (78) concealed by the workpiece (1; 2) and in contact with the workpiece (1; 2). For example, the lifting devices of the gripping units (131) are lowered as the negative pressure increases. After the workpiece (1; 2) has been secured by means of the suction elements (76), the gripping units (131) can be detached from the workpiece (1; 2) if necessary. The workpiece (1; 2) can now be machined using the tool units (101 - 103) and the edge bander (104). For example, all of the tool units (101 - 103) arranged on the tool gantry (91) and the edge bander (104) can be used to machine a workpiece (1; 2). For example, it is conceivable to machine the workpiece (1; 2) completely in one setup.

[0046] During the machining of the first workpiece (1; 2), a second workpiece (2; 1) can be provided. For this purpose, the workpiece carriages (116, 117; 114, 115) of the second workpiece path (12; 11) are used. The second workpiece (2; 1) is provided as described above in connection with the first workpiece (1; 2). The second workpiece (2; 1) can already be moved into the work area (63; 62) during the machining of the first workpiece (1; 2). Another sequence for the provision and machining of the workpieces (1; 2) is also conceivable.

[0047] After machining the first workpiece (1; 2), the vacuum pump is switched off, for example, and the pressure at the suction surfaces (77) is increased to ambient pressure. The gripping elements (131) grip the workpiece (1; 2) or continue to hold the gripped workpiece (1; 2). The support rollers (85) are raised and / or the suction elements (76) are lowered until the support plane lies above the suction elements (76). The workpiece carriages (114, 115; 116, 117) move the machined workpiece (1; 2), for example in the second conveying direction (113), for workpiece removal, which in the exemplary embodiment takes place in the workpiece provision area (22; 23). It is also conceivable to convey the machined workpiece (1; 2) further in the first conveying direction (112), for example to another production cell.

[0048] When arranging the manufacturing cell (10) in a linked production line, it is conceivable to hold the gripping units (131) on the workpiece (1; 2) throughout the entire machining process. This eliminates the need to reposition the workpiece in a subsequent manufacturing cell (10).

[0049] The first workpiece (1) and the second workpiece (2) can also be machined in parallel. For example, in the case of identical machining operations, the workpiece gantry (91) can have two identically designed tool units (101, 101; 102, 102; 103, 103). It is also conceivable, for example, that milling is performed on one workpiece (1; 2) while a drilling unit is used, e.g., intermittently, on the other workpiece (2; 1).

[0050] The workpiece (1; 2) to be machined can also be wider than a single workpiece path (11; 12). For example, it then extends into the other workpiece path (12; 11). Machining of such a workpiece (1; 2) takes place as described above. In this case, the subsequent workpiece (2; 1) is only moved into the work area (62; 63) once the preceding workpiece (1; 2) has left both work areas (62; 63).

[0051] The Figure 9 shows a variant of a production cell (10). This has, like the one in the Figure 1 - 8 The production cell (10) shown has two workpiece paths (11, 12). The workpiece supply (21) is, for example, constructed identically to that described in connection with the first embodiment.

[0052] The workpiece carriages (114-117) can be equipped with gripping units (131) whose lower clamping jaw (134) is fixed relative to the housing (118). The clamping plane of this lower clamping jaw (134) lies, for example, in the conveying plane. The upper clamping jaw (133) is adjustable relative to this lower clamping jaw (134).

[0053] The machine tool (61) of this exemplary embodiment has a stationary tool carrier (91) in the form of a tool gantry (91) which supports the tool units (101, 102). In this exemplary embodiment, the tool carrier (91) can also be L-shaped. The workpiece table (65) consists of support rollers (85) which are arranged parallel to one another and offset from one another in the longitudinal direction. The upper tangential plane of the support rollers (85) coincides, for example, with the conveying plane. Vertically below the active tools of the tool units (101, 102), for example, there is a gap between the support rollers (85). In this exemplary embodiment, too, both the support rollers (27) and the support rollers (85) can be rigid or rotatable.

[0054] The workpieces (1, 2) are prepared as described above. The workpiece (1; 2) picked up by the workpiece carriages (114, 115; 116, 117) is conveyed, for example, along the conveying plane in the conveying direction (112) into the machine tool (61). During machining, the workpiece (1; 2) rests on the support rollers (85). In this exemplary embodiment, the tool units (101, 102) also move at least in the transverse direction (6), in the vertical direction (7), and in the longitudinal direction (5) relative to the workpiece (1; 2). For the relative movement in the longitudinal direction (5), the workpiece (1; 2) can be moved relative to the machine bed (64) by means of the workpiece carriages (114, 115; 116, 117).

[0055] In this embodiment, two workpieces (1, 2) lying on the adjacent workpiece paths (11, 12) can be machined in parallel with each other using different work steps.

[0056] The machined workpieces (1, 2) are conveyed as described above. If necessary, a workpiece (1; 2) machined, for example, in a first clamping setup, can be shifted to the other workpiece path (12; 11) by means of the transverse shifting device (41) in the workpiece preparation (21) to be further machined there by means of a further tool unit (102; 101). List of reference symbols:

[0057] 1Workpiece, first workpiece 2Workpiece, second workpiece 3Workpiece long side 5Longitudinal direction 6Transverse direction 7Height direction 10Manufacturing cell 11Workpiece path, first workpiece path 12Workpiece path, second workpiece path 21Workpiece supply 22Workpiece supply area 23Workpiece supply area 24Bed 25Support roller conveyor 26Support roller conveyor 27Support rollers 28Workpiece carriage guide rails 29Conductor tracks 31Support roller carrier 32Cross guides 33Tooth rack 41Cross-thrust device 42Rake 43Cross slide 44Lifting device 45Tine carrier 46Tines 51Stop bar 52Stop device 53Stop device 54Pin support 55Stop pin 56Stop pin 57Cylinder, double-acting 61Machine tool 62Working area 63Working area 64Machine bed 65Workpiece tables 66Suction block guideways 67Workpiece carriage guide rails 68Gantry guide rails 71Suction block group 72Support beam 73Guide groups 74Guide shoes 75Clamping device 76Suction elements 77Suction surface 78Suction cup 79Support beam coupling 81Support device 82Lifting device 83Lifting cylinder 84Guide cylinder 85Support roller 86Support bracket 91Tool carrier, tool portal 92Gantry carrier 93Recirculating ball bearings 94Central beam 95Support and guide rails 101Tool unit, 5-axis head 102Tool unit, drilling unit 103Tool unit, gluing unit 104Edge bander 105Cross slide 106Disc milling cutter 107Swivel axis 108Vertical axis 109Drilling and milling tools 111 Conveyor device 112 Conveying direction, first conveying direction 113 Second conveying direction 114 Workpiece carriage 115 Workpiece carriage 116 Workpiece carriage 117 Workpiece carriage 118 Housing 121Guide unit 122Ball bearing shoe 125Drive unit 126Power and signal supply 127Drive wheels 131Gripping unit 132Parallel gripping device 133Clamping jaw, top 134Clamping jaw, bottom 141Docking coupling 142Plunger 143Plug

Claims

1. A manufacturing cell (10) having a machine tool (61), which has a tool carrier (91) bearing at least two tool units (101, 102; 102, 103; 101, 103; 101, 101; 102, 102) and comprises two workpiece tracks (11, 12), which are situated next to one another and are oriented in a longitudinal direction (5), wherein the tool units (101; 102; 103) are movable relative to a machine bed (64) of the machine tool (61) at least in a transverse direction (6) oriented normally to the longitudinal direction (5) and in a vertical direction (7) oriented normally to these two directions (5, 6), wherein, per workpiece track (11, 12), at least one workpiece carriage (114; 115; 116; 117) of the workpiece track (11; 12) is movable along the machine tool (61) in the longitudinal direction (5), and wherein the tool units (101, 102; 102, 103; 101, 103; 101, 101; 102, 102) are movable in the longitudinal direction (5) relative to the machine bed (64) and / or relative to the workpiece carriages (114, 115; 116, 117), - wherein the tool carrier (91) protrudes or extends over the workpiece tracks (11, 12), which each have a workpiece-providing region (22; 23) of a workpiece-providing system (21) and a working region (62; 63) of the machine tool (61), - wherein the tool units (101; 102; 103) can be used both for processing a workpiece (1; 2) on the first workpiece track (11) and for processing a workpiece (2; 1) on the second workpiece track (12), - wherein the workpiece carriages (114; 115; 116; 117) are additionally movable in the longitudinal direction (5) along the workpiece-providing system (21), and - wherein the workpiece-providing system (21) has at least one lowerable or tiltable stop device (52; 53) per workpiece track (11; 12).

2. The manufacturing cell (10) according to Claim 1, characterised in that both workpiece-providing regions (22, 23) have a common, lowerable transverse pushing device (41).

3. The manufacturing cell (10) according to Claim 1, characterised in that at least the workpiece carriage (114 - 117) of one workpiece track (11; 12) is movable between the machine bed (64) and the tool carrier (91).

4. The manufacturing cell (10) according to Claim 1, characterised in that the tool carrier (91) is designed as a tool gantry (91).

5. The manufacturing cell (10) according to Claim 1, characterised in that each workpiece carriage (114; 115; 116; 117) has a drive unit (125) and a gripping unit (131) for gripping a workpiece (1; 2).

6. The manufacturing cell (10) according to Claim 1, characterised in that a workpiece table (65) having supporting rollers (85) is arranged in each working region (62; 63) of the machine tool (61).

7. The manufacturing cell (10) according to Claim 6, characterised in that at least one supporting roller (85) is part of a block sucker group (71) with height-adjustable suction elements (76).

8. The manufacturing cell (10) according to Claim 7, characterised in that the block sucker group (71) is movable in the longitudinal direction (5).

9. The manufacturing cell (10) according to Claim 1, characterised in that the tool carrier (91) is movable in the longitudinal direction (5) relative to the machine bed (64).