Computer-supported manufacturing method, and manufacturing system

Abstract

The invention relates to a computer-supported manufacturing method (10) for manufacturing workpieces (12, 12a, 12b, 14, 16) from a plurality of workpiece blanks (26) using a manufacturing system (28) by means of a plurality of workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) defined in manufacturing orders (18, 18a-c), having the method steps of: a) forming (30) a processing stock (32) by separating the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) contained in the manufacturing orders (18, 18a-c) by assigning an order association; b) creating (36) a cross-order manufacturing plan (38) by positioning at least some of the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) provided in the processing stock (32) on one or more workpiece blanks (26); c) defining (40) a partial manufacturing plan (42a-d) of the manufacturing plan (38), wherein the partial manufacturing plan (42a-d) comprises manufacturing the workpiece orders (20, 20a, 20b, 22a, 22b, 24a, 24b, 24a, 24b) positioned on an individual workpiece blank (26), wherein the partial manufacturing plan (42a-d) is defined while taking into account an occupancy level of the workpiece blank (26); d) manufacturing (40) the workpieces (12, 12a, 12b, 14, 16) according to the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) of the partial production plan (42a-d). The invention further relates to a manufacturing system (28).

Description

[0001] Computer-aided manufacturing process and manufacturing system

[0002] Background of the invention

[0003] The invention relates to a manufacturing process for producing workpieces from workpiece blanks using a manufacturing system and several workpiece orders defined in production orders. The invention also relates to a manufacturing system.

[0004] Such processes involve manufacturing workpieces by cutting them out of standardized sheet metal, for example, using laser cutting machines. Typically, a significant amount of residual material is generated during the manufacturing process, which is often not used further. This increases the material input for producing the workpieces and consequently the manufacturing costs.

[0005] To reduce residual material, after the workpieces have been manufactured from the workpiece blank, it may be possible to use the remaining blank in a subsequent manufacturing process for further workpieces. DE 10 2018 133 524 A1 discloses a method that visually detects a residual blank and feeds it into a subsequent manufacturing process. However, managing and controlling the residual blanks incurs considerable costs, which also lead to an increase in manufacturing costs.

[0006] Another approach aims to reduce material waste from residual blanks by closely nesting the workpieces to be manufactured according to a production order on the workpiece blank. Here, the workpieces are placed on the raw material in the most space-saving way possible. However, the utilization of the raw material is determined by the nesting suitability of the workpieces contained in the order and their geometry. In many cases, this prevents the effective use of the available raw material.

[0007] Furthermore, poorly manufactured workpieces have to be painstakingly remade, which usually involves machining another blank and increases material waste.

[0008] It is therefore an object of the invention to carry out the production of workpieces from workpiece blanks in a low-organization and cost-effective manner while avoiding material waste.

[0009] Description of the invention

[0010] This problem is solved according to the invention by a computer-aided manufacturing process with the features of claim 1. The invention is further solved by a manufacturing system with the features of claim 11. The dependent claims describe preferred embodiments of the invention.

[0011] According to the invention, a computer-aided manufacturing process is provided. The manufacturing process is carried out using at least one computer. Preferably, the process steps of the manufacturing process are predominantly, and in particular completely, carried out using at least one computer.

[0012] The manufacturing process is typically carried out on a manufacturing system for producing workpieces from workpiece blanks. Preferably, the manufacturing process uses the processing units of the manufacturing system and / or communicates with the processing units of the manufacturing system. Furthermore, preferably, the manufacturing process is carried out automatically, thereby increasing the level of automation of the manufacturing system.

[0013] The proposed manufacturing process involves producing workpieces from multiple workpiece blanks using several workpiece orders defined in production orders. In other words, the manufacturing process for producing workpieces according to orders takes into account further production orders that are passed to the manufacturing process.

[0014] The computer-aided manufacturing process includes at least the following process steps:

[0015] In process step a) of the manufacturing process, a worklist is created by separating the workpiece orders contained in the production orders and assigning each order a corresponding order. In other words, the workpiece orders contained in a production order are extracted from their production group within that respective production order.

[0016] The production queue can be understood as an order pool, or a pool of workpieces to be manufactured, in which the individual workpiece orders from the production orders are provided as independently manufacturable units. Typically, each workpiece order contains all the information required for the production of the respective workpiece, or a reference to it, such as workpiece geometry, material thickness, material type, quantity, and / or a production date.

[0017] Furthermore, each workpiece order includes an order assignment, which ensures the workpiece order is linked to the original production order. In process step b) of the production process, the creation of a cross-order production plan is provided. This production plan is created by positioning at least some of the workpiece orders provided in the processing queue onto one or more workpiece blanks.

[0018] Positioning refers to the repositioning and / or repositioning of workpiece orders or workpiece geometries on the workpiece blanks, both before and after the process. Positioning can include moving and / or rotating the workpiece geometry.

[0019] The workpiece blanks can be of a standardized design. Alternatively or additionally, it can be provided that residual blanks are supplied as workpiece blanks. The workpiece blanks typically have a material thickness required for the manufacture of the corresponding workpiece.

[0020] When positioning workpiece orders, it may be possible to preselect or sort them according to predetermined properties of the workpiece blank. In other words, it may be possible to group workpiece orders that require the same workpiece blank for production. For example, it may be possible to include all workpieces to be produced in a Geometrical Relationship Graph (GRG). A GRG is a fully meshed graph that specifies, for each pair of workpiece geometries, how well the two geometries can be arranged together on a single workpiece blank. An example of a GRG is known from WO 2024 / 037825 A1. For selecting the workpieces to be produced from the same workpiece blank, the graph can be viewed as a Capacitated Vehicle Routing Problem With Time Window (CVRPTW).The production date of each workpiece to be manufactured is treated as a time window. Algorithms for solving the CVRPTW (Completely Variable Production Time Window) are known to experts from various technical articles. In this way, suitable workpieces for production from the same workpiece blank can be selected, and the required production date for each can be met.

[0021] The positioning or nesting itself is preferably done using generally known nesting algorithms.

[0022] The creation of the production plan is preferably carried out centrally by the processing unit. Alternatively or additionally, the processing unit can be decentralized and located at several machine tools. In this case, the machine tools can create machine-specific production plans. These machine-specific production plans are typically tailored to a specific workpiece blank, enabling more efficient processing of workpiece orders when using multiple machine tools.

[0023] In a further process step c) of the manufacturing process, a partial production plan is defined within the overall production plan. This partial production plan typically specifies the manufacturing of workpiece orders related to a single workpiece blank, with the definition taking into account the utilization rate of the workpiece blank. By considering the utilization rate, insufficient utilization of the workpiece blank and thus excessive material scrap can be avoided.

[0024] By defining the partial production plan, the workpiece orders included in the partial production plan are blocked from further planning in the production plan, thus preventing multiple use.

[0025] A further process step d) of the manufacturing process involves producing the workpieces according to the workpiece orders in the partial production plan. Typically, the partial production plan is transmitted to the processing machine.

[0026] In summary, the invention proposes a manufacturing process in which the workpiece blanks are not assigned based on the workpiece orders of a single production order, but rather by considering all workpiece orders of all input production orders. This allows for the use of a multitude of geometries for nesting, thereby optimizing the assignment of the workpiece blank. Material scrap and, consequently, manufacturing costs are significantly reduced by the proposed manufacturing process. Waste blanks can thus be avoided.

[0027] In contrast to known methods, the proposed manufacturing process allows for dynamic modification of the production plan, whereby only parts of the production plan are fixed at the time of production and locked for further optimization. Conventional methods, on the other hand, involve setting a fixed production plan that can only be changed with considerable effort.

[0028] In addition to improved utilization and recycling of workpiece blanks, a holistic view of the workpieces to be manufactured allows for the provision of appropriate workpiece blanks at the machining center at an early stage. This improved material flow enables the machining center to be loaded with the exact number of workpiece blanks of a specific type required, which positively impacts the efficiency of the manufacturing system.

[0029] In a preferred embodiment of the computer-aided manufacturing process, the partial production plan is determined when the workpiece blank is at least 80 percent, preferably 85 percent, and particularly preferably 90 percent, utilized. In other words, the determination of the partial production plan can be delayed if sufficient utilization of the workpiece blank is not achieved. The production of workpiece orders from other partial production plans can then be prioritized. This allows the process to be dynamic and minimizes material scrap.

[0030] A further preferred embodiment of the computer-aided manufacturing process is one in which the positioning of the workpiece orders on a workpiece blank is provided taking into account a geometric compatibility between the workpieces.

[0031] Geometry compatibility allows for the grouping of workpiece geometries with similar or identical contours. This promotes a high utilization rate of the workpiece blank.

[0032] Alternatively or additionally, geometric compatibility can encompass the adjacent arrangement of workpiece geometries with complementary workpiece contours. The suitability of adjacent contours or edges can be determined, for example, by calculating a scalar Geometrical Compatibility Index (GCI). This allows gaps between the workpiece geometries to be avoided and the coverage rate to be further increased. A GCI is preferably calculated for each pair of workpiece geometries and indicates how well the two workpiece geometries can be arranged together on a workpiece blank. An example for calculating a GCI is known from WO 2024 / 037825 A1.

[0033] A preferred embodiment of the computer-aided manufacturing process includes the positioning of workpiece orders and the determination of the partial production plan, taking into account a delivery date for the manufactured workpieces. In other words, workpiece orders can be prioritized according to their production time rank. Prioritization is typically increased as the production time decreases. Particularly preferred is the utilization rate compared to the remaining production time, whereby the utilization rate can be reduced as the production time elapses.

[0034] In a preferred embodiment of the computer-aided manufacturing process, the partial production plan is determined taking into account the storage costs of partially completed production orders. In other words, the costs of storing workpieces for an incomplete production order are considered before the partial production order is determined. If necessary, alternative partial production orders are processed with priority until the complete processing of the production order can be ensured through several partial production orders.

[0035] Alternatively, it can be provided that partially completed production orders are buffered and managed until the entire production order has been processed. Partially processed production orders can be reported back for this purpose, with an assignment between storage location and production order.

[0036] A further preferred embodiment of the computer-aided manufacturing process is one in which the determination of the partial production plan takes into account the transport costs of partially completed production orders. For example, it can be stipulated that partial orders are only produced if delivery without subsequent storage can be carried out cost-effectively.

[0037] In a preferred embodiment of the computer-aided manufacturing process, the order assignment is defined by the workpiece contour and / or a workpiece marking. In other words, the workpiece to be manufactured can be identified by its workpiece contour and tracked within the manufacturing system. This eliminates the need to assign and / or create markings. Alternatively or additionally, markings can be created on the workpiece during manufacturing. This allows for workpiece identification without image analysis algorithms.

[0038] In a preferred embodiment, the computer-aided manufacturing process includes the additional process step e), in which order-dependent palletizing of the manufactured workpieces is provided. In other words, after the workpieces have been manufactured, they are assigned or sorted according to the original production order, particularly automatically. Palletizing is preferably carried out on pallets ready for shipment, so that shipping can take place immediately after completion of the production order.

[0039] A further preferred embodiment of the computer-aided manufacturing process is one in which several partial production plans are defined in parallel or simultaneously. This allows the completion of production orders distributed across multiple partial production plans to be coordinated in terms of timing. This, in turn, allows subsequent processes, particularly the shipment of the workpieces, to be planned even more precisely.

[0040] In a preferred advanced version of the computer-aided manufacturing process, the manufacturing system comprises two or more machine tools. Typically, two or more partial production plans are transmitted to different machine tools for the production of workpieces. This allows for further parallelization of the manufacturing process. Furthermore, the production of workpieces from similar blanks can be concentrated on specific machine tools, thus eliminating the need for retooling the blanks.

[0041] The underlying task is further solved by a manufacturing system.

[0042] The manufacturing system is designed to at least partially execute the computer-aided manufacturing process described above and below. The manufacturing system comprises at least one processing machine. Preferably, the manufacturing system comprises two or more, in particular a plurality, of processing machines. The processing machines are preferably designed as laser processing machines and / or punching machines. The processing machines are designed to manufacture workpieces according to a partial production plan.

[0043] The processing machines within the manufacturing system are typically networked with each other, or are designed for data communication with each other.

[0044] The manufacturing system also includes at least one processing unit, preferably a centrally located one. The processing unit comprises one or more computers or computing units designed to create the production plan described above and below, to position workpiece orders on a workpiece blank, and / or to define partial production plans.

[0045] Further advantages of the invention will become apparent from the description and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for illustrating the invention.

[0046] Detailed description of the invention and drawing

[0047] Fig. 1 schematically shows a computer-aided manufacturing process according to the invention for manufacturing workpieces using workpieces contained in manufacturing orders.

[0048] Fig. 2 schematically shows the production of workpieces according to the manufacturing process from Fig. 1 in a manufacturing system. Fig. 1 schematically shows a computer-aided manufacturing process 10. The manufacturing process 10 is explained in more detail below with reference to Fig. 2.

[0049] The computer-aided manufacturing process 10 is designed for the production of workpieces 12, 14, 16 (see Fig. 2) using workpiece orders 20, 22, 24 (see Fig. 2) defined in production orders 18 (see Fig. 2). The computer-aided manufacturing process 10 is designed for the production of the workpieces 12, 14, 16 from several workpiece blanks 26 (see Fig. 2) using a manufacturing system 28 (see Fig. 2).

[0050] The computer-aided manufacturing process 10 includes at least the following process steps:

[0051] In a first process step 30 of the manufacturing process 10, a machining inventory 32 (see Fig. 2) is created. The machining inventory 32 is created by singulating the workpiece orders 20, 22, 24 contained in the production orders 18. Singulation typically involves assigning an order affiliation to the workpiece order 20, 22, 24 of the original production order 18, thus ensuring that the workpiece order 20, 22, 24 can be assigned to the respective production order 18.

[0052] The individual workpiece order 20, 22, 24 typically contains all the manufacturing information required to produce a workpiece 12, 14, 16. The workpiece order 20, 22, 24 can contain geometric information or at least a reference to geometric information about the workpiece 12, 14, 16 to be produced, in particular one or more workpiece contours 35 (see Fig. 2). Furthermore, for example, the workpiece order 20, 22, 24 can contain one or more material parameters or a reference to material parameters of the workpiece 12, 14, 16 to be produced, in particular a material type and / or a material thickness. In addition, the workpiece order 20, 22, 24 can contain one or more machine parameters, in particular a cutting speed, of a machine tool 34 (see Fig. 2).

[0053] In a subsequent process step 36 of the manufacturing process 10, the creation of a cross-order production plan 38 (see Fig. 2) is provided. The production plan 38 is created by positioning at least some of the workpiece orders 20, 22, 24 provided in the machining queue 32 on one or more workpiece blanks 26. Preferably, all workpiece orders 20, 22, 24 provided in the machining queue 32 are positioned on workpiece blanks 26, with the occupancy of each workpiece blank 26 being optimized with respect to a certain occupancy level.

[0054] Workpiece orders 20, 22, 24 already positioned on workpiece blanks 26 can be removed and fed back into the processing supply 32.

[0055] Furthermore, additional or new production orders 18 can be taken into account during the creation of the production plan 38, which can result in the positioning of the workpiece orders 20, 22, 24.

[0056] A further process step 40 of the manufacturing process 10 involves defining a partial production plan 42a-d (see Fig. 2) of the production plan 38. In other words, a part of the production plan 32 is designated as unchangeable and excluded from any changes to the positioning of the workpiece orders 20, 22, 24. Typically, the partial production plan 42a-d includes at least one workpiece blank 26. The partial production plan 42a-d is defined taking into account the occupancy level of the workpiece blank 26.

[0057] Manufacturing process 10 can provide for the determination of several partial production plans 42a-d, particularly simultaneously. For example, it can be provided that the partial production plan 42a-d is determined on the workpiece blank 26 subject to a predetermined utilization rate. This effectively prevents excessive material scrap. Preferably, the partial production plan 42a-d is determined when the utilization rate is at least 80 percent, preferably 85 percent, and particularly preferably 90 percent.

[0058] In process step 44 of manufacturing process 10, the production of workpieces 12, 14, 16 is planned according to workpiece orders 20, 22, 24 of the partial production plan 42a-d. Typically, the partial production plan 42a-d is transmitted to a processing machine 34 of the manufacturing system 28.

[0059] In a particular embodiment of the manufacturing process 10, an additional process step 46 is provided after the manufactured workpieces 12, 14, 16 are palletized according to the order. In other words, the workpieces 12, 14, 16, which were manufactured across multiple orders, are assigned to the original production orders 18 after production, or sorted accordingly.

[0060] Fig. 2 schematically shows a manufacturing system 28.

[0061] The manufacturing system 28 typically comprises at least one machining center 34 for manufacturing the workpieces 12, 14, 16 by means of workpiece orders 20, 22, 24 from workpiece blanks 26.

[0062] For example, processing machine 34 can be designed as a laser processing machine for laser cutting the workpieces 12, 14, 16 from the workpiece blank 26.

[0063] Preferably, the manufacturing system 28 comprises two or more, in particular a plurality of, processing machines 34. This allows the manufacturing of the workpieces 12, 14, 16 to be carried out particularly quickly and in parallel.

[0064] The manufacturing system 28 preferably comprises a processing unit

[0065] 48. The processing unit 48 is typically designed to perform at least the process steps 30, 36, 40 (see Fig. 1). In other words, the processing unit 48 is designed to separate the production orders 18, to generate the processing stock 32, to create the production plan 38 and / or to define the partial production plan 42a-d.

[0066] Particularly preferably, the processing unit 48 is designed centrally, which means that a single processing unit 48 can be used for a manufacturing system 28 with several processing machines 34.

[0067] As shown, several production orders 18a, 18b, and 18c are provided to the processing device 48. Typically, the processing device 48 is designed to process a large number of production orders 18. The production orders 18 can be provided by a central production management system (not shown). Alternatively or additionally, the production orders 18 can be transmitted directly to the processing device 48.

[0068] The processing unit 48 separates the workpiece orders 20, 22, 24 contained in the production orders 18, as shown in the illustration. For the sake of clarity, only two workpiece orders 20, 22, 24 are shown for each production order 18. Typically, a production order 18 comprises a number of workpiece orders 20, 22, 24.

[0069] As shown, the singulated workpiece orders 20, 22, 24 are fed into a processing queue 32. Workpiece orders 20, 22, 24 are assigned an order affiliation. In other words, during singulation, it is ensured that workpiece orders 20a, 20b of production order 18a, workpiece orders 22a, 22b of production order 18b, and workpiece orders 24a, 24b of production order 18c can be assigned to the corresponding production order 18 at any time. An order affiliation can be achieved, for example, by adding metadata (not shown) to each workpiece order 20, 22, 24. Alternatively or additionally, it may be provided that a code and / or a designation is added to the workpiece order 20, 22, 24 and, if necessary, created on the workpiece 12, 14, 16 when creating the workpiece 12, 14, 16.

[0070] As shown, the processing queue 32 can contain further workpiece orders 50a-g. These further workpiece orders 50a-g may, for example, have remained in the processing queue 32 from previous production orders 18. Furthermore, the further workpiece orders 50a-g may have been re-entered as production orders 18 as rework for damaged or defective workpieces 12, 14, 16.

[0071] Each workpiece order 20, 22, 24 comprises a workpiece contour 35a-m to be manufactured. For the sake of clarity, the workpiece orders 20, 22, 24 are shown to include only three different workpiece geometries 35: a rectangular workpiece contour, a round workpiece contour, and a triangular workpiece contour. Of course, the workpiece geometries 35 of the workpieces 12, 14, 16 to be manufactured can have any contours. Furthermore, the workpiece geometries 35 can have recesses (not shown). The manufacturing process 10 is particularly suitable for ensuring the production of workpieces 12, 14, 16 with complex workpiece contours 35 while avoiding material waste.

[0072] The processing unit 48 positions the workpiece orders 20, 22, 24, or the workpiece geometries 35 to be manufactured, on workpiece blanks 26 according to plan for the creation of the production plan 38. The workpiece blanks 26 can be identical. Furthermore, it is possible to use workpiece blanks 26 with different dimensions, in particular different material thicknesses, for positioning. The corresponding workpiece blank 26 can be pre-selected by order-related specifications, for example, a specified workpiece thickness.

[0073] The actual positioning by the processing unit 48 can preferably be carried out solely depending on the workpiece 12, 14, 16 to be manufactured, or the workpiece geometry 35 to be manufactured, and not on a job-specific basis. In other words, the positioning can be carried out independently of the other workpiece orders 20, 22, 24 of the corresponding production order 18. This allows for the nesting of workpiece geometries 35 from different production orders 18, which can result in a higher occupancy rate of the workpiece blank 26 and thus a lower material scrap rate.

[0074] Positioning can be understood as repositioning 52 of a workpiece order 20a, 20b, 22a, 22b, 24a, 24b, 50a-g, or a workpiece geometry 35a-m on a workpiece blank 26 and / or repositioning 54 of workpiece orders 20, 22, 24, or workpiece geometries 35a-m already positioned on a workpiece blank 26. Repositioning 52 typically involves removing a workpiece order 20, 22, 24 from the machining supply 32. Repositioning 54 typically involves changing the position of a workpiece geometry 35 within a workpiece blank 26 or positioning the workpiece geometry 35 on a different workpiece blank 26. This can increase the occupancy rate of the workpiece blanks 26.

[0075] As shown, the workpiece geometries 35a-d are positioned on a workpiece blank 26 by the processing unit 48 in production plan 38. The workpiece blank 26 with the workpiece geometries 35a-d is part of the partial production plan 42a of production plan 38. The partial production plan 42a can be determined depending on the occupancy level of the workpiece blank 26. Furthermore, as shown, the workpiece geometries 35e, 35f, and 35j are positioned on another workpiece blank 26 according to a partial production plan 42b of production plan 38. Additionally, the workpiece geometries 35g, 35i, and 35h are positioned on yet another workpiece blank 26 according to a further partial production plan 42c. The processing device 48 can provide that, as shown, the workpiece geometry 35h is repositioned to increase the occupancy level of the workpiece blank 26 according to the part production plan 42b.

[0076] A partial production plan 42d is available for positioning further workpiece geometries 35a-m.

[0077] The positioning of the workpiece orders 20, 22, 24, or workpiece geometries 35a-m, is preferably carried out taking into account a geometric compatibility between the workpiece geometries 35a-m already positioned on the workpiece blank 26 and the workpiece geometries 35a-m that can be added. This allows for a preselection of the workpiece geometries 35a-m that can be added and accelerates positioning with a high degree of occupancy.

[0078] The determination of the partial production plan 42a-d is typically carried out taking into account the occupancy level of a workpiece blank 26. Preferably, a partial production plan 42a-d is determined as soon as a predetermined occupancy level is reached or exceeded. In addition, it may be provided that the positioning of workpiece geometries 35a-m for specific production orders 18 and / or the determination of the partial production plan 42a-d taking into account a delivery date for the workpieces 12, 14, 16 to be manufactured are provided. In other words, it may be provided that workpieces 12, 14, 16 with an imminent delivery date are prioritized.

[0079] Furthermore, it can be provided that the determination of the partial production plan 42a-d takes into account the storage costs of partially completed production orders 18. In other words, the production of workpieces 12, 14, 16 can be postponed until all workpiece orders 35a-m of a production order 18 are determined by partial production plans 42a-d. This prevents the production of workpieces 12, 14, 16 that would subsequently require costly storage or stockpiling.

[0080] Furthermore, it may be provided that the determination of the partial production plan 42a-d takes into account the transport costs of partially completed production orders 18. In other words, production orders 18 can be completed if a partial delivery of the completed workpieces 12, 14, 16 can be carried out cost-effectively.

[0081] As shown, a defined partial production plan 42a is transmitted to the machining center 34. The machining center 34 produces workpieces 12a, 12b, 14, 16 from workpiece geometries 35a-d. The manufactured workpieces 12, 14, 16 can then be assigned to the original production orders 18, here 18a and 18b, and palletized accordingly for delivery.

[0082]

[0083] 10 manufacturing processes;

[0084] 12, 12a, b Workpiece;

[0085] 14, 16 workpiece;

[0086] 18, 18a-c Production order;

[0087] 20, 20a, b Workpiece order;

[0088] 22, 22a, b Workpiece order;

[0089] 24, 24a, b Workpiece order;

[0090] 26 workpiece blanks;

[0091] 28 Manufacturing system;

[0092] 30th procedural step;

[0093] 32 processing backlog;

[0094] 34 processing machine;

[0095] 35, 35a-m workpiece contour;

[0096] 36th procedural step;

[0097] 38 Production plan;

[0098] 40th process step;

[0099] 42a-d Partial production plan;

[0100] 44th procedural step;

[0101] 46th procedural step;

[0102] 48 Processing equipment;

[0103] 50a-g further workpiece order;

[0104] 52 Repositioning;

[0105] 54 Repositioning.

Claims

Patent claims 1. Computer-aided manufacturing process (10) for manufacturing Workpieces (12, 12a, 12b, 14, 16) by means of several in Workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) defined by production orders (18, 18a-c) from several workpiece blanks (26) with a production system (28), comprising the process steps: a) forming (30) a processing stock (32) by singulating the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) contained in the production orders (18, 18a-c) by assigning an order membership; b) Creating (36) a cross-order production plan (38) by positioning at least some of the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) provided in the processing stock (32) on one or more workpiece blanks (26);c) Establishing (40) a partial production plan (42a-d) of the production plan (38), wherein the partial production plan (42a-d) provides for the production of the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) positioned on a single workpiece blank (26), the establishment taking into account a occupancy level of the workpiece blank (26); d) Producing (44) the workpieces (12, 12a, 12b, 14, 16) according to the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) of the partial production plan (42a-d).

2. Computer-aided manufacturing process (10) according to claim 1, wherein the partial production plan (42a-d) is determined at a occupancy level of at least 80 percent, preferably 85 percent, particularly preferably 90 percent, of the workpiece blank (26).

3. Computer-aided manufacturing process (10) according to claim 1 or 2, wherein the positioning of the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) on a workpiece blank (26) under Consideration of geometric compatibility between the workpieces (12, 12a, 12b, 14, 16) is provided.

4. Computer-aided manufacturing process (10) according to one of the preceding claims, wherein the positioning of the workpiece orders (20, 20a, 20b, 22, 22a, 22b, 24, 24a, 24b) and the determination of the partial production plan (42a-d) taking into account a delivery date for the manufactured workpieces (12, 12a, 12b, 14, 16) is provided.

5. Computer-aided manufacturing process (10) according to one of the preceding claims, wherein the determination of the partial production plan (42a-d) is carried out taking into account storage costs of partially completed production orders (18, 18a-c).

6. Computer-aided manufacturing process (10) according to one of the preceding claims, wherein the determination of the partial production plan (42a-d) is carried out taking into account transport costs of partially completed production orders (18, 18a-c).

7. Computer-aided manufacturing process (10) according to one of the preceding claims, wherein the order affiliation is formed by a workpiece contour (35, 35a-m) and / or as a workpiece marking.

8. Computer-aided manufacturing process (10) according to one of the preceding claims, comprising the additional process step: e) Order-dependent palletizing (46) of the manufactured workpieces (12, 12a, 12b, 14, 16).

9. Computer-aided manufacturing method (10) according to any one of the preceding claims, wherein several partial manufacturing plans (42a-d) are defined.

10. Computer-aided manufacturing method (10) according to claim 9, wherein the manufacturing system (28) has two or more processing machines (34), wherein the partial production plans (42a-d) for manufacturing the workpieces (12, 12a, 12b, 14, 16) are assigned to different Processing machines (34) are transmitted.

11. Manufacturing system (28) for manufacturing workpieces (12, 12a, 12b, 14, 16) with at least one machining machine (34) and a processing device (48) for at least partially carrying out the computer-aided manufacturing process (10) according to one of the preceding claims.

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