Machining center and method for machining workpieces from different workpiece batches, production line and control unit for controlling a machining center

Abstract

The present invention provides a machining center (1) for processing workpieces (2) in different batches (C1, C2, C3), wherein each batch of workpieces (C1, C2, C3) comprises a workpiece (2) or a group of workpieces (2) having the same workpiece height (H1, H2, H3), the machining center (1) comprising: a worktable (10) having a support surface (11) on which the workpieces (2) of the respective batches of workpieces (C1, C2, C3) are supported. For processing; a conveying unit (20) forming the support surface (11) with a conveying plane (21), wherein the conveying unit (20) is configured to transport the workpieces (2) to be processed at a feed rate from a machine inlet (1a) to a machine outlet (1b) of the machining center (1) in a conveying direction (F), wherein the machining center (1) is fed the workpieces (2) through the machine inlet (1a) for processing, and the processed workpieces (2) are then transported by a conveying plane (21) to a machine outlet (1b). The material is discharged from the machining center (1) through the machine outlet (1b); a first machining unit (30) is configured to be adjustable relative to the support surface (11) for machining the workpieces (2) disposed on the support surface (11) using a first tool set (32), wherein the first machining unit (30) forms a first machining section (31), the first tool set (32) for machining the workpieces (2) is disposed on the first machining section in such that the first tool set (32) defines a first machining plane (33) extending parallel to the conveying plane (21), wherein the first machining plane (33) and the conveying plane (21) are configured to be spaced apart from each other by a first distance (A1), wherein the first machining unit (30) is adjustable relative to the support surface (11) in such that the first distance (A1) can be set between a first minimum distance and a first maximum distance, the first maximum distance being different from the first minimum distance;and a second processing unit (40) configured to be adjustable relative to the support surface (11) for processing the workpieces (2) disposed on the support surface (11) using a second tool set, wherein the second processing unit (40) forms a second processing section (41), and the second tool set (42) for processing the workpieces (2) is disposed on the second processing section such that the second tool set (42) defines a second processing plane (43) extending parallel to the transport plane (21), wherein the second processing plane (43) and the transport plane (21) are configured to be spaced apart from each other by a second distance (A2), wherein the second processing unit (40) is adjustable relative to the support surface (11) such that the second distance (A2) can be set between a second minimum distance and a second maximum distance, the second maximum distance being different from the second minimum distance, and the second processing unit (40) operates in the transport direction (F) with a single processing unit. The machining center is characterized by having a first height adjustment drive unit (50) configured to adjust the first machining unit (30) relative to the support surface (11) such that the first distance (A1) can be adjusted between a first minimum distance and a first maximum distance, and a second height adjustment drive unit (60) configured to adjust the second machining unit (40) relative to the support surface (11) such that the second distance (A2) can be adjusted between a second minimum distance and a second maximum distance. The first distance (A1) and the second distance (A2) can be adjusted to process workpieces (2) of different batches (C1, C2, C3). The first distance (A1) and the second distance (A2) can be adjusted differently to simultaneously process multiple batches (C1, C2, C3) with different workpiece heights (H1, H2, H3). Machining center (1) for machining workpieces (2) from different workpiece batches (C1, C2, C3), wherein the respective workpiece batch (C1, C2, C3) comprises a workpiece (2) or a group of workpieces (2) with the same workpiece height (H1, H2, H3), the machining center (1) comprising: a work table (10) with a support surface (11) on which the workpieces (2) of the respective workpiece batches (C1, C2, C3) are supported for machining, a conveyor unit (20) which forms the support surface (11) with a conveying plane (21), wherein the conveyor unit (20) is configured to transport the workpieces (2) for machining in a conveying direction (F) from a machine infeed (1a) to a machine outfeed (1b) of the machining center (1) with a feed, wherein the machining center (1) is fed via the machine infeed (1a) with workpieces (2) for machining and the machined workpieces (2) are discharged from the machining center (1) via the machine outfeed (1b),a first machining unit (30) arranged adjustably relative to the support surface (11) for machining the workpieces (2) arranged on the support surface (11) with a first tool set (32), wherein the first machining unit (30) forms a first machining section (31) on which the first tool set (32) for machining the workpieces (2) is arranged in such a way that the first tool set (32) defines a first machining plane (33) which extends parallel to the conveying plane (21), wherein the first machining plane (33) and the conveying plane (21) are arranged spaced apart from each other at a first distance (A1), wherein the first machining unit (30) is adjustable relative to the support surface (11) in such a way that the first distance (A1) can be set between a first minimum distance and a first maximum distance different from the first minimum distance,and a second machining unit (40) arranged to be adjustable relative to the support surface (11) for machining the workpieces (2) arranged on the support surface (11) with a second tool set, wherein the second machining unit (40) forms a second machining section (41) on which the second tool set (42) for machining the workpieces (2) is arranged in such a way that the second tool set (42) defines a second machining plane (43) which extends parallel to the conveying plane (21), wherein the second machining plane (43) and the conveying plane (21) are arranged spaced apart from each other by a second distance (A2), wherein the second machining unit (40) is adjustable relative to the support surface (11) in such a way that the second distance (A2) can be set between a second minimum distance and a second maximum distance different from the second minimum distance,and the second machining unit (40) is arranged in the conveying direction (F) at a machining unit distance (BA) behind the first machining unit (30), characterized in thata first height adjustment drive unit (50) is arranged, which is configured to adjust the first machining unit (30) relative to the support surface (11) in such a way that the first distance (A1) is adjustable between the first minimum distance and the first maximum distance, and a second height adjustment drive unit (60) is arranged, which is configured to adjust the second machining unit (40) relative to the support surface (11) in such a way that the second distance (A2) is adjustable between the second minimum distance and the second maximum distance, wherein, for machining workpieces (2) from different workpiece batches (C1, C2, C3), the first distance (A1) and the second distance (A2) are adjustable in such a way that, for simultaneous machining of multiple batches (C1, C2,C3) with different workpiece heights (H1, H2, H3), the first distance (A1) is adjustable differently from the second distance (A2).,

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