Manufacturing cell comprising a tool carrier

Abstract

The invention relates to a manufacturing cell comprising a machine tool that has a tool carrier carrying at least one tool unit and has two adjacent workpiece paths oriented in a longitudinal direction, wherein the tool unit can be displaced 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 at least one workpiece carriage per workpiece path can be displaced in the longitudinal direction along the machine tool, and wherein the tool unit can be displaced in the longitudinal direction relative to the machine bed and / or relative to the workpiece carriages. The tool carrier overhangs or projects beyond the workpiece paths which each have a workpiece supply region of a workpiece supply section and a working region of the machine tool. The individual workpiece carriage can also be displaced in the longitudinal direction along the workpiece supply section. Furthermore, the workpiece supply section has at least one lowerable or tiltable stop device per workpiece path. The present invention provides a manufacturing cell having a high output rate and high degree of flexibility.

Description

Manufacturing cell comprising a tool carrier Description: The invention relates to a manufacturing cell comprising a ma- chine tool that has a tool carrier carrying at least one tool unit and has two adjacent workpiece paths oriented in a longi- tudinal direction, wherein the tool unit can be displaced rel- ative to a machine bed of the machine tool at least in a transverse direction oriented normal to the longitudinal di- rection and in a vertical direction oriented normal to these two directions, wherein at least one workpiece carriage per workpiece path can be displaced in the longitudinal direction along the machine tool, and wherein the tool unit can be dis- placed in the longitudinal direction relative to the machine bed and / or relative to the workpiece carriages. A manufacturing cell is disclosed in FR 3 056 932 Al. In this, two workpieces fixed on coupled carriages are machined simul- taneously by means of two tool units arranged on a gantry. The present invention is based on the problem of increasing the output rate of a manufacturing cell while maintaining a high degree of flexibility. This problem is solved with the features disclosed herein. For this purpose, the tool carrier overlaps or projects beyond the workpiece paths, which each have a workpiece supply region of a workpiece supply and a working region of the machine tool. The individual workpiece carriage can also be displaced in the longitudinal direction along the workpiece supply. Fur- thermore, the workpiece supply has at least one lowerable or tiltable stop device per workpiece path. The manufacturing cell has two parallel workpiece paths along which a workpiece to be machined is conveyed. The convey de- vices of both workpiece paths have workpiece carriages that quide the workpiece to be machined. Such workpiece carriages can be displaced independently of one another in the longitu- dinal direction of the manufacturing cell. The tool carrier overhangs or projects beyond both workpiece paths, such that the single tool unit can be used to machine a workpiece on the first workpiece path and to machine a workpiece on the second workpiece path. The supply of a second workpiece and the dis- placement of such second workpiece into the working region of the machine tool can take place during the machining of a first workpiece. Since the machining operations on the indi- vidual workpieces are independent of one another, a high out- put rate can be achieved even with a batch size of one. The manufacturing cell can be designed for manual or automatic workpiece loading and unloading. It can be arranged individu- ally in the material flow or - in the case of an interlinked manufacturing process - integrated into one manufacturing line. Such an interlinked manufacturing process can designed to be rigid or flexible. In this case, the manufacturing cell can be designed in such a way that it enables complete machin- ing of the workpiece without reclamping. Further details of the invention will be apparent from the following description of schematically illustrated embodiments. Figure 1: Manufacturing cell; Figure 2: Workpiece supply; Figure 3: Transverse thrust device; Figure 4: Stop bar; Figure 5: Workpiece carriage; Figure 6: Machine tool; Figure 7: Suction block assembly; Figure 8: Tool gantry; Figure 9: Variant of the manufacturing cell. Figures 1 - 8 show a manufacturing cell (10) and some of its assemblies. The manufacturing cell (10) shown includes a work- piece supply (21) and a machine tool (61) interlinked with the workpiece supply (21). The individual workpieces (1; 2) to be machined by means of the machine tool (61) are conveyed by means of a conveyor device (111) from the workpiece supply (21) to the machine tool (61) and to the workpiece removal unit. In the exemplary embodiment, the workpiece removal takes place after machining in the workpiece supply region (21). However, it is also conceivable to arrange the respective workpiece removal unit in a manner spatially separate from the workpiece supply (21). The workpiece (1; 2) is transported from the workpiece supply (21) to the machine tool (61) in a first conveying direction (112). For removal, the workpiece (1; 2) in this exemplary embodiment is transported in a second conveying direction (113) directed against such first convey- ing direction (112). The conveying directions (112, 113) are oriented in the longitudinal direction (5) of the manufactur- ing cell (10). The manufacturing cell (10) has two workpiece paths (11, 12). These are located next to one another. They have the same lon- gitudinal direction (5). Each of the workpiece paths (11; 12) has a workpiece supply region (22; 23) and a working region (62; 63). The working region (62; 63) is arranged in the ma- chine tool (61). The respective working region (62; 63) is the, for example, cuboid-shaped spatial region in which the individual workpiece (1; 2) interacts with the machining tool unit (101 - 104). In the exemplary embodiment, the workpiece supply (21), see Figure 2, comprises a bed (24) that supports two adjacent load-bearing roller paths (25, 26), a transverse thrust device (41) and two stop devices (52, 53) seated, for example, on a common stop bar (51). The bed (24) has external workpiece car- riage guide rails (28) and conductor paths (29). These con- tinue on the machine bed (64) of the machine tool (61). Work- piece carriages (114 - 117) of the conveyor device (111) can be displaced along the workpiece carriage guide rails (28). In the exemplary embodiment, the conveyor device (111) comprises two workpiece carriages (114, 115; 116, 117) per workpiece path (11; 12). The power supply and control of the self-pro- pelled workpiece carriages (114 - 117) is provided by means of the conductor paths (29). It is also conceivable to use only one workpiece carriage (114; 115; 116; 117) per workpiece path (11; 12). The single load-bearing roller path (25; 26) comprises a plu- rality of load-bearing rollers (27) lying transverse to the conveying direction (112) and parallel to one another. These can be of rigid design or, for example, can be arranged on a rigid axle in rolling bearings. In the exemplary embodiment, all load-bearing rollers (27) are identical to one another. The width of the individual load-bearing roller (27) is gener- ally greater than or equal to the maximum width of a workpiece (1; 2) to be machined in the transverse direction (6). The load-bearing rollers (27) project beyond the lateral load- bearing roller supports (31) oriented in the longitudinal di- rection (5) in the height direction (7). Figure 3 shows a transverse thrust device (41). In the exem- plary embodiment, this has a rake (42) that can be displaced 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 dis- placed relative thereto. The stroke of the transverse slide (43) in the transverse direction (6) is, for example, 40% greater than the width of a load-bearing roller path (25; 26) in such direction. The two transverse slides (43) are driven synchronously with one another, for example. A lifting device (44) which acts on a height-adjustable time carrier (45) of the rake (42) oriented in the longitudinal direction (5) sits on each of the transverse slides (43). Both, for example, hy- draulically operated lifting devices (44) are coupled, such that the tine carrier (45) is always horizontal. Tines (46) project upwards from the tine carrier (45). In the exemplary embodiment, the times (46) are cylindrical pins. When the rake (42) is mounted and raised, the tines (46) are positioned, for example, between two load-bearing rollers (27) of a load-bear- ing roller path (25; 26). The lifting devices (44) are de- signed in such a way that, when the tines (46) are extended, they project beyond the supporting plane of the load-bearing roller path (25; 26) by 70% of the stroke. When the lifting device (44) is lowered, the tines (46) are recessed below the supporting plane of the load-bearing roller path (25; 26). The supporting plane of the load-bearing roller path (25; 26) tan- gent to the upper side of the load-bearing roller path (25; 26) is also referred to below as the conveying plane of the manufacturing cell (10). Instead of a rake (42), the trans- verse thrust device (41) can also have a pivoting lever, a thrust wedge, etc. Figure 4 shows a stop bar (51). This is oriented in the trans- verse direction (6) and is arranged at the end of the work- piece supply (21) turned towards the machine tool (61). The stop bar (51) has a pin carrier (54) that supports two stop devices (52, 53), each with two stop pins (55; 56). Each stop pin (55; 56) is adjustable between a retracted and an extended position by means of a double-acting cylinder (57). In the ex- tended position shown, the stop pins (55, 56) project 85% of their vertical stroke beyond the conveying plane. In the re- tracted position, the stop pins (55, 56) are below the convey- ing plane. The stroke adjustment of the hydraulic cylinders (57) is carried out, for example, in groups per stop device <semantics>(52;53)<annotation encoding="application / x-tex">(52; 53)< / annotation>< / semantics>. Figure 5 shows a workpiece carriage (114; 115; 116; 117). The manufacturing cell (10) shown in the exemplary embodiment has four workpiece carriages (114 - 117) of the same kind. Two of such workpiece carriages (114, 115) are guided along the right side of the manufacturing cell (10) as seen in the conveying direction (112), while the two other workpiece carriages (116, 117) are quided along the left side. It is also possible to use more or fewer than the number of workpiece carriages (114) - 117) shown. The individual workpiece carriage (114; 115; 116; 117) has a guide unit (121), a drive unit (125) and a gripping unit (131). The above units (121, 125, 131) are integrated in a housing (118). In the exemplary embodiment, a docking coupling (141) is arranged on the external side of the housing (118). The guide unit (121) comprises a recirculating ball bearing unit (122) that, when the workpiece carriage (114; 115; 116; 117) is mounted, engages around the workpiece carriage guide rail (28) of the workpiece supply (21) and / or the workpiece carriage guide rail (67) of the machine tool (61). In this case, the workpiece carriage guide rails (28, 67) are fastened in the longitudinal direction (5) oriented on the bed (24) of the workpiece supply (21) or on the machine bed (64) of the machine tool (61). The drive unit (125) has a power and signal supply (126). When the workpiece carriage (114; 115; 116; 117) is mounted, this is in spring-loaded contact with the conducting paths (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 wheel (127) that, when the workpiece carriage (114; 115; 116; 117) is mounted, meshes with a toothed rack (33) fastened lat- erally to the bed (24) or to the machine bed (64). The gripping unit (131) is arranged above the guide unit (121). It comprises a parallel gripping device (132) with two clamping jaws (133, 134) movable relative to one another. In the exemplary embodiment, both clamping jaws (133, 134) are displaceable relative to the housing (118) of the workpiece carriage (114; 115; 116; 117). The opening and closing direc- tions 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. Both clamping jaws (133, 134) can also be ad- justed in height in an individually driven manner. The gripping unit (131) can also be asymmetrical. For example, the lower clamping jaw (134) can have a shorter stroke than the upper clamping jaw (133). For example, the docking coupling (141) has a retractable plunger (142) and a plug (143). The plug (143) can be used to transmit electrical power, data and / or media, for example com- pressed air for pneumatic functions. In the exemplary embodi- ment, a suction block assembly (71) of the machine tool (61) can be coupled to the docking coupling (141). The single work- piece carriage (114; 115; 116; 117) can also be formed without the docking coupling (141). Figure 6 shows the machine tool (61) of the manufacturing cell (10). Two workpiece tables (65) are arranged side by side in the machine bed (64). The parting line of the two workpiece tables (65) runs in the vertical center longitudinal plane of the machine bed (64). Each of the workpiece tables (65) in- cludes a plurality of suction block assemblies (71). The indi- vidual suction block assemblies (71) are guided in the machine bed (64) so that they can be displaced in the longitudinal di- rection (5). The machine bed (64) has suction block guide paths (66) oriented in the longitudinal direction (5) for this purpose. Furthermore, a chip removal device can be arranged in the machine bed (64). Figure 7 shows a suction block assembly (71). All suction block assemblies (71), for example, are constructed in the same way. The single suction block assembly (71) has a support beam (72) with two guide assemblies (73) for guidance along the machine bed (64). The single guide assembly (73) has two guide shoes (74) spaced apart in the longitudinal direction (5), between which a hydraulically or pneumatically releasable clamping device (75) is located. This, for example, spring- loaded closing clamping device (75) secures the position of the suction block assembly (71) relative to the machine bed (64) in the longitudinal direction (5). The support beam (72) is oriented in the transverse direction (6). For example, it carries three suction elements sitting next to one another (76). These have an approximately rectan- gular suction surface (77) with four suction cups (78). In the exemplary embodiment, the suction elements (76) are designed to be individually adjustable in height. However, they can also be designed to be rigid. Each suction element (76) and / or suction cup (78) can be controlled individually with negative pressure. A support device (81) is arranged on the support beam (72). This support device (81) has a lifting device (82) that 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 in a U- shaped support beam (86), for example. A rigid arrangement of the individual support roller (85) is also conceivable. The lifting device (82) is designed in such a way that the support plane lying parallel to the conveying plane and tangent to the upper surface line of the support roller (85) can be adjusted from a standby position lying below the suction surface (77) to a support position lying above the suction surface (77). A support beam coupling (79) is arranged at the end face of the support beam (72). This is designed, for example, to com- plement the docking coupling (141) of the workpiece carriages <semantics>(114−117).<annotation encoding="application / x-tex">(114 - 117).< / annotation>< / semantics> Gantry guide rails (68) are arranged below the workpiece car- riage guide rails (67) on the external side of the machine bed (64). The gantry guide rails (68) guide a tool carrier (91) in the form of a tool gantry (91), which in the exemplary embodi- ment carries three tool units (101; 102; 103). The tool gantry (91) can be displaced along the machine bed (64) in the longi- tudinal direction (5) by means of a drive device (not shown here). The drive unit of the tool gantry (91) can, for exam- ple, be designed like the drive unit (125) of the workpiece carriages (114 - 117). However, a drive by means of a ball screw, a gear drive, 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) straddles both workpiece paths (11, 12). In this exemplary embodiment, it is located outside the workpiece carriages (114 - 117), such that they can be displaced unhindered within the tool gantry (91). Figure 8 shows the tool gantry (91). The tool gantry (91) has a U-shaped gantry carrier (92). Recirculating ball bearing units (93), for example, which engage around the gantry guide rails (68), are arranged at the free ends of the gantry car- rier (92). The upper central beam (94) of the gantry carrier (92) supports 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 (101 - 103) shown is mounted on such support and guide rails (95) by means of Thus, the individual tool unit (101 - 103) can be displaced in the transverse direction (6) and in the height direction (7) oriented normal to the conveying plane. Each of the tool units (101 - 103) can additionally be designed to be displaced relative to the tool gantry (91) in the longitudinal direction (5). All tool units (101 - 103) can machine workpieces (1; 2) on both workpiece paths (11, 12). The tool carrier (91) can also be designed to be L-shaped. It is then mounted on one side of the machine bed (64) so that it can be displaced, for example, and projects beyond both work- piece paths (11, 12). With one such embodiment, the workpiece carriages (114, 115; 116, 117)) of at least one workpiece path (11; 12) travel between the machine bed (64) and the tool car- rier (91). The tooling units (101 - 103) shown in the exemplary embodi- ment are a 5-axis head (101), a drilling unit (102) and a glu- ing unit (103). In the exemplary embodiment, the 5-axis head (101) carries a driven disk milling cutter (106) that can be pivoted about a horizontal pivot axis (107). Furthermore, such unit can be pivoted or rotated about a vertical axis (108). The drilling unit (102) has a plurality of drilling and mill- ing tools (109) that can be brought into individual engagement with the workpiece, for example. The drilling unit (102) is designed to swivel about a vertical axis, for example. On the side of the tool gantry (91) turned away from the 5- axis head (101) and the drilling unit (102), the latter car- ries the gluing unit (103). The gluing unit (103) can be used, for example, to apply a workpiece coating to the workpiece (1; 2). An edge gluer (104) is also arranged on the workpiece gantry (91). This can be used to coat the edges of the workpiece (1; 2). In the manufacturing cell (10), for example, no workpiece (1; 2) is initially provided in the workpiece supply (21). At least two workpiece carriages (114, 115; 116, 117) are posi- tioned on one side in the region of the workpiece supply (21). The gripping units (131) of such workpiece carriages (114, 115; 116, 117) are open. The rake (42) of the transverse thrust device (41) is lowered. A first workpiece (1; 2) is de- posited in the workpiece supply (21), for example by means of a hall conveyor device. Such first workpiece (1; 2) is de- signed to be, for example, plate-shaped. It consists, for ex- ample, of wood, plastic, aluminum, steel, a composite mate- rial, etc. The deposited workpiece (1; 2) is only roughly ori- ented when deposited, for example. For example, the longitudi- nal direction of the workpiece can deviate by 30 degrees from the longitudinal direction (5) of the manufacturing cell (10). After the first workpiece (1; 2) has been deposited, the rake (42) travels in the transverse direction (6) until it is on the side of the workpiece (1; 2) turned away from the work- piece carriages (114, 115; 116, 117). The lifting devices (44) then lift the tine carrier (45) and the tines (46) until the tines (46) project above the conveying plane. Now, the rake (42) can move the first workpiece (1; 2) in the direction of 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 in such a way that the longitudinal side (3) of the workpiece received in the gripping units (131) is oriented in the longi- tudinal direction (5) of the manufacturing cell (10). The manual loading and / or alignment of the workpiece (1; 2) is also conceivable. In this case, the workpiece (1; 2) deposited on the load-bearing rollers (27) is pushed by the operator to the workpiece carriages (114, 115; 116, 117) of the workpiece path (11; 12) provided for machining. After the gripping units (131) have been closed, the workpiece carriages (114, 115; 116, 117) pull the workpiece (1; 2) along the load-bearing rollers (27) in the conveying direction (112) until the workpiece (1; 2) rests against at least one stop pin (55; 56) of the workpiece path (11; 12). It is also conceiva- ble that, when the gripping units (131) are closed, the work- piece (1; 2) is lifted off the load-bearing roller path (25; 26) by a small amount, for example less than five millimeters. For example, it is then parallel to the conveying plane. From the workpiece position at the stop device (52; 53) and the po- sition of the workpiece carriages (114, 115; 116, 117) rela- tive to the bed (24) in the longitudinal direction (5), the position of the workpiece (1; 2) relative to the workpiece carriages (114, 115; 116, 117) can be determined. In the machine tool (61), for example, free workpiece car- riages (114, 115; 116, 117) or adjustment carriages are used to adjust the position of the suction block assemblies (71) in the longitudinal direction (5). When using adjustment car- riages, for example, these are constructed in the same way as the workpiece carriages (114 - 117), but do not have a grip- ping unit (131). To adjust the individual suction block assem- bly (71), a workpiece carriage (114; 115; 116; 117) couples to a suction block assembly (71) by means of the docking coupling (141). The clamping of the suction block assembly (71) to the suction block guide path (66) is released and the workpiece carriage (114; 115; 116; 117) displaces the suction block as- sembly (71) to the desired position specific to the workpiece. Furthermore, those suction elements (76) which are located in the region of the workpiece (1; 2) to be machined are lowered. This prevents, for example, damage to the suction block assem- bly (71) during the cutting machining of the workpiece (1; 2). The workpiece carriage (114; 115; 116; 117) is then uncoupled from the suction block assembly (71) and the clamping device (75) of the suction block assembly (71) is activated on the machine bed (64). The suction block assemblies (71) can also be adjusted by means of the workpiece carriages (114, 115; 116, 117) convey- ing the workpiece (1; 2). For this purpose, for example, after the workpiece (1; 2) has been deposited 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). By means of the free workpiece carriage (114; 115; 116; 117), one or more of the suction block assemblies (71) can now be ad- justed. After clamping the workpiece (1; 2) again by means of such workpiece carriage (114; 115; 116; 117), another work- piece carriage (115; 114; 117; 116) can be used to adjust ad- ditional suction block assemblies (71). The suction block assemblies (71) can also be displaced indi- vidually relative to the machine bed (64). For this purpose, for example, each suction block unit (71) has a drive unit that rolls, for example, on a toothed rack on the machine bed side. With 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 assemblies (71) can be omitted. For example, the adjustment of the suction block assemblies (71) in the longitudinal direction (5) takes place in a manner specific to the workpiece during the alignment of the workpiece (1; 2) to be machined in the workpiece supply (21). After lowering the stop pins (55; 56) of the first workpiece path (11; 12), the workpiece carriages (114, 115; 116, 117) displace 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, such that the workpiece (1; 2) lies on the support rollers (85) at the pro- vided position in the respective working region (62; 63) of the machine tool (61). Then, for example, the suction elements (76) provided are raised and / or the support rollers (85) are lowered until the workpiece (1; 2) lies on the designated suc- tion elements (76). The support rollers (85) are lowered fur- ther until they are below the working region (62; 63) of the tool units (101 - 103). It is also conceivable to lift the support rollers (85) after positioning the workpiece carriages (114, 115; 116, 117), such that the respective workpiece (1; 2) lies on the support roll- ers (85) after opening the gripping elements (131). The sup- port rollers (85) are then lowered by means of the support roller lifting devices (82) until they are below the support plane. In this case, the workpiece (1; 2) is deposited on the suction elements (76). In this case, the height-adjustable gripping units (131), for example, can continue to hold the workpiece (1; 2). By means of a vacuum pump, which acts on the suction cups (78) covered by the workpiece (1; 2) and resting on the workpiece (1; 2), the first workpiece (1; 2) is fixed in the machining position. In this case, for example, the lifting devices of the gripping units (131) are lowered as the negative pressure increases. After fixing the workpiece (1; 2) by means of the suction elements (76), the gripping units (131) can be re- leased from the workpiece (1; 2) if necessary. The workpiece (1; 2) can now be machined by means of the tool units (101 - 103) and the edge gluer (104). In this case, for example, all the tool units (101 - 103) arranged on the tool gantry (91) and the edge gluer (104) can be used to machine a workpiece (1; 2). For example, it is conceivable to machine the work- piece (1; 2) completely in one clamping operation. While the first workpiece (1; 2) is being machined, a second workpiece (2; 1) can be provided. The workpiece carriages (116, 117; 114, 115) of the second workpiece path (12; 11) are used for this purpose. 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 displaced into the working region (63; 62) while the first workpiece (1; 2) is being machined. Another sequence of the supply and machin- ing of the workpieces (1; 2) is also conceivable. After machining the first workpiece (1; 2), for example, the vacuum pump is switched off 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 is above the suction elements (76). The work- piece carriages (114, 115; 116,117) displace the machined workpiece (1; 2), for example, in the second conveying direc- tion (113) for workpiece removal, which in the exemplary em- bodiment takes place in the workpiece supply region (22; 23). It is also conceivable to convey the machined workpiece (1; 2) further in the first conveying direction (112), for example to a further manufacturing cell. When arranging the manufacturing cell (10) in a linked manu- facturing process, it is conceivable to hold the gripping units (131) on the workpiece (1; 2) during the entire machin- ing process. This eliminates the need to reposition the work- piece in a subsequent manufacturing cell (10). The first workpiece (1) and the second workpiece (2) can also be machined in a manner parallel to one another. For example, for identical work processes, the workpiece gantry (91) can have two identically designed tool units (101, 101; 102, 102; 103, 103). It is also conceivable, for example, that a milling operation is carried out on one workpiece (1; 2) while a drilling unit is used intermittently on the other workpiece <semantics>(2;1)<annotation encoding="application / x-tex">(2; 1)< / annotation>< / semantics>. The workpiece (1; 2) to be machined can also be wider than a single workpiece path (11; 12). For example, it then projects into the other workpiece path (12; 11). The machining of such a workpiece (1; 2) is carried out as described above. In this case, the following workpiece (2; 1) does not travel into the working region (62; 63) until the preceding workpiece (1; 2) has left both working regions (62; 63). Figure 9 shows a variant of a manufacturing cell (10). Like the manufacturing cell (10) shown in Figures 1 - 8, this has two workpiece paths (11, 12). The workpiece supply (21) is, for example, identically constructed as described in connec- tion with the first embodiment. The workpiece carriages (114 - 117) can be equipped with grip- ping units (131), the lower clamping jaw (134) of which is ar- ranged in a stationary manner relative to the housing (118). The clamping plane of such lower clamping jaw (134) lies in the conveying plane, for example. The upper clamping jaw (133) is adjustable relative to such lower clamping jaw (134). The machine tool (61) of such exemplary embodiment has a fixed tool carrier (91) in the form of a tool gantry (91) that sup- ports the tool units (101, 102). In this exemplary embodiment, the tool carrier (91) can also be formed to be L-shaped. The workpiece table (65) consists of support rollers (85), which are arranged in a manner parallel to one another and offset in the longitudinal direction. The upper tangential plane of the support rollers (85), for example, coincides with the convey- ing 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 load-bearing rollers (27) and the support rollers (85) can be formed to be rigid or rotatable. The supply of the workpieces (1, 2) takes place as described above. The workpiece (1; 2) picked up by the workpiece car- riages (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 embodi- ment, the tool units (101, 102) also travel relative to the workpiece (1; 2) at least in the transverse direction (6), in the height direction (7) and in the longitudinal direction (5). For relative movement in the longitudinal direction (5), the workpiece (1; 2) can be displaced relative to the machine bed (64) by means of the workpiece carriages (114, 115; 116, 117). In this exemplary embodiment, two workpieces (1, 2) lying on the adjacent workpiece paths (11, 12) may be machined in par- allel with different work processes. The conveying of the machined workpieces (1, 2) takes place as described above. If necessary, a workpiece (1; 2) machined in a first clamping operation, for example, can be moved into the workpiece supply (21) by means of the transverse thrust device (41) onto the respective other workpiece path (12; 11), in or- der to be further machined there by means of a further tool unit (102; 101). Combinations of the individual exemplary embodiments are also conceivable. List of reference signs: 1 Workpiece, first workpiece 2 Workpiece, second workpiece 5 3 Longitudinal side of workpiece 5 Longitudinal direction 6 Transverse direction 7 Height direction 10 10 Manufacturing cell 11 Workpiece path, first workpiece path 12 Workpiece path, second workpiece path 15 21 Workpiece supply 22 Workpiece supply region 23 Workpiece supply region 24 Bed 25 Load-bearing roller path 20 26 Load-bearing roller path 27 Load-bearing rollers 28 Workpiece carriage guide rails 29 Conductor paths 25 31 Load-bearing roller carrier 32 Transverse guides 33 Toothed rack 41 Transverse thrust device 30 42 Rake 43 Transverse slide 44 Lifting device 45 Tine carrier 46 Tines 51 Stop bar 52 Stop device 53 Stop device 5 54 Pin carrier 55 Stop pin 56 Stop pin 57 Cylinder, double-acting 10 61 Machine tool 62 Working region 63 Working region 64 Machine bed 65 Workpiece table 15 66 Suction block guide paths 67 Workpiece carriage guide rails 68 Tool gantry guide rails 71 Suction block assembly 20 72 Support beam 73 Guide assemblies 74 Guide shoes 75 Clamping device 76 Suction elements 25 77 Suction surface 78 Suction cup 79 Support beam coupling 81 Support device 30 82 Lifting device 83 Lifting cylinder 84 Guide cylinder 85 Support roller 86 Support beam 91 Tool carrier, Tool gantry 92 Gantry carrier 93 Recirculating ball bearing units 5 94 Central beam 95 Support and guide rails 101 Tool unit, 5-axis head 102 Tool unit, drilling unit 10 103 Tool unit, gluing unit 104 Edge gluer 105 Cross slide 106 Disk milling cutter 107 Pivot axis 15 108 Vertical axis 109 Drill and milling tools 111 Conveying direction 112 Conveying direction, first conveying direction 20 113 Second conveying direction 114 Workpiece carriage 115 Workpiece carriage 116 Workpiece carriage 117 Workpiece carriage 25 118 Housing 121 Guide unit 122 Recirculating ball bearing unit 30 125 Drive unit 126 Power and signal supply 127 Drive wheels 131 Gripping unit [Image disponible dans le document PDF, Image available in the PDF document]

Claims

1. A manufacturing cell (10) comprising a machine tool (61) that has a tool carrier (91) carrying at least two tool units (101; 102; 103) and has two adjacent workpiece paths (11, 12) oriented in a longitudinal direction (5) with at least one workpiece carriage (114;115;116;117) each, wherein the tool unit (101; 102; 103) is displaceable relative to a machine bed (64) of the machine tool (61) at least in a transverse di- rection (6) oriented normal to the longitudinal direction (5) and in a vertical direction (7) oriented normal to these two directions (5, 6), wherein at least one workpiece carriage (114; 115; 116; 117) per workpiece path is displaceable in the longitudinal direction (5) along the machine tool (61), and wherein the tool units (101; 102; 103) are displaceable in the longitudinal direction (5) relative to the machine bed (64) or relative to the workpiece carriages (114, 115; 116, 117), wherein - the tool carrier (91) overhangs or projects beyond the workpiece paths (11, 12), which each have a workpiece supply region (22; 23) of a workpiece supply (21) and a working region (62; 63) of the machine tool (61), wherein the workpiece paths has a first workpiece path (11) and a second workpiece path (12), the single tool unit is usable for machining a first workpiece (1; 2) located as well on the first workpiece path (11) as for machining a second workpiece on the second workpiece path (12) - the individual workpiece carriage (114; 115; 116;117) also being displaceable in the longitudinal direction (5) along the workpiece supply (21), and - the workpiece supply (21) has at least one lowerable or tiltable stop device (52; 53) per workpiece path (11;12).

2. The manufacturing cell (10) according to claim 1, charac- terized in that both workpiece supply regions (22, 23) have a common, lowerable transverse thrust device (41).

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

4. The manufacturing cell (10) according to claim 1, charac- terized in that the tool carrier (91) is designed as a tool gantry (91).

5. The manufacturing cell (10) according to claim 1, charac- terized in that the 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, charac- terized in that a workpiece table (65) with support rollers (85) is arranged in each working region (62; 63) of the ma- chine tool (61).

7. The manufacturing cell (10) according to claim 6, charac- terized in that at least one support roller (85) is part of a suction block assembly (71) with height-adjustable suction el- ements (76).

8. The manufacturing cell (10) according to claim 7, charac- terized in that the suction block assembly (71) is displaceable in the longitudinal direction (5).

9. The manufacturing cell (10) according to claim 1, charac- terized in that the tool carrier (91) is displaceable relative to the machine bed (64) in the longitudinal direction (5).