Control system of a machine tool, pallet system having release data, and method for machining release

Abstract

The invention relates to a control system for a machine tool (6), comprising: a receiving region (13) for receiving a pallet system, which comprises at least one pallet (1); and predetermined machining data provided on the control system side for releasing the machine tool (6), wherein the control system is designed to read the pallet-system-specific release data from the pallet system when the pallet system is received in the receiving region (13) and to compare said data with the predetermined machining data in order to release machining on the machine tool (6). The invention further relates to a pallet system, comprising: a pallet (1); at least one structure; and a rewritable data memory (2) which is integrated into the pallet (1); and which stores pallet-system-specific release data for releasing the machining process on the machine tool (6).

Description

[0001] DMG MORI Pfronten GmbH July 3, 2025

[0002] 1

[0003] CONTROL SYSTEM OF A MACHINE TOOL, PALLET SYSTEM WITH RELEASE DATA AND PROCEDURE FOR PROCESSING RELEASE

[0004] The present invention relates to a system for controlling a machine tool for machining. The invention further relates to a workpiece carrier or pallet on which workpieces can be clamped for machining and which includes a data storage device for storing process parameters on the basis of which the operation can be controlled at the time the machine tool is started.

[0005] When machining workpieces using a machine tool, tools and workpieces are moved relative to each other to machine the workpiece. Systems are known in the prior art for handling these workpieces, providing workpiece pallets on which workpieces can be set up independently of the machine tool. Document DE 10 2019 211 472 A1 discloses a device for energy and information transfer between the pallet and the machine tool. At the setup station, one or more workpieces can be prepared for machining on the pallet. The disclosure of this document is hereby fully incorporated by reference.

[0006] Before processing, the pallets can be stored in a handling system, as shown in DE 10 2020 133 542 A1, until further notice. An allocation system monitors the utilization of the machine park and assigns pallets to available workstations. In a flexible working environment, work is carried out on the spindle of the machine tools in mixed operation between neutral and high-speed modes. Different occupational safety requirements apply here. For example, a higher rotational speed of the machine tool requires a higher clamping force.

[0007] The requirement for the desired rotational speed is derived from the machine tool's programming and is inherent to it. A start with

[0008] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0010] Excessive demands on the workpiece pallet can damage the machine tool and compromise workplace safety.

[0011] One object of the invention is therefore to provide optimized machining on a machine tool taking a pallet into account. Furthermore, another object may be to make machining on a machine tool safer.

[0012] To solve these problems, the features of the independent claims are proposed. Advantageous further developments are found in the dependent claims. The respective dependent claims relate to preferred embodiments, which can be provided individually or in combination.

[0013] According to one aspect of the invention, a control system for a machine tool is provided. The machine tool can be configured, in particular, for machining operations such as turning and milling of workpieces. The machine tool can be automated and used in conjunction with other machines, as well as in a chain of machining steps. The machining of at least one workpiece can be carried out in mixed operation. Mixed operation refers to operation in which several machining processes, such as turning and milling, etc., can be applied. Mixed operation can be carried out on one machine tool or on several machine tools. Especially with this type of system, where several different pallets are used, some of which differ significantly in their construction (e.g., groove pattern, etc.), the identification and verification of the pallet is very important.

[0014] The machine tool may include a receiving area for a pallet system. This receiving area may be located within the machine tool housing or at least be directly related to the machining operation of the machine tool.

[0015] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0017] The receiving area can be a spatially limited area designed to accommodate the pallet or pallet system for machining in the machine tool. The receiving area can be located at the same location as the machining area. Alternatively and / or additionally, the receiving area can also be located outside the machine tool housing.

[0018] The control system can include predetermined machining data. This machining data can serve purposes such as identifying the pallet system, configuring the machine tool, or preventing machining from starting. This predetermined machining data can, for example, be control data (especially internal control data from the control system) of the machine tool and can be used, for instance, to control and / or define an operating range of the machine tool. Thus, this control data can, for example, define the (optimal and / or maximum) spindle speed, the (optimal and / or maximum) table speed, the (optimal and / or maximum) feed rate, and the (optimal and / or maximum) clamping force during workpiece machining.The "predetermined machining data" is predefined because this data is already available to the machine tool control, particularly before workpiece machining begins and especially before a workpiece pallet (or pallet system) is inserted into the machine tool's holding area. This design further increases machining safety. The table speed can also vary depending on the clamping device or component clamped on the pallet. For example, if an FD pallet is inserted without a clamping device, the machine can operate in rotary mode, and the table speed can reach its maximum value. However, if a standard pallet is inserted, the table speed is used, for example, only for positioning, so the table speed is set to a minimum value.The term table speed refers to the speed at which the worktable of a machine tool is moved, usually by rotation.

[0019] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0021] A pallet with one or more workpieces and / or a pallet system can be attached to the worktable. By moving the worktable, objects attached to it can be positioned and / or workpieces can be machined by moving relative to a cutting tool.

[0022] The pallet system can, for example, comprise: at least one pallet, at least one rewritable data storage device, which may be integrated into the pallet and which stores pallet system-specific release data for enabling the machining operation on the machine tool. Pallet system-specific release data includes, in particular, data that is unique to a specific pallet system and the elements it contains.

[0023] A pallet can be a workpiece carrier that can be exchanged in a machine tool. A pallet can include interfaces that allow for the exchange of workpieces between multiple machine tools. During exchange, the workpieces can remain on the pallet and do not need to be reclamped, thus increasing manufacturing tolerances and process efficiency. The pallet can be essentially rectangular, square, circular, or oval and may be equipped with grooves or threaded holes. Pallet identification or verification is particularly advantageous when used in mixed-machine operation, as the requirements for the clamping device can differ considerably.

[0024] Furthermore, the pallet system can comprise at least one assembly, where assemblies describe components attached to the pallet. In particular, clamping devices such as clamps, jaw chucks, quick-change drill tool holders, or T-nuts can be assemblies. Clamping devices can be defined as elements by which workpieces can be secured to the pallet. Assembly can also refer to workpieces. These include, for example, semi-finished products, blanks, or already machined workpieces.

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[0027] The rewritable data storage device can be implemented as a memory chip. Advantageously, it is a non-volatile memory. "Writable" describes the ability of the data storage device to repeatedly record different or identical data and to make it available for reading at least once before the stored data is completely or partially overwritten or deleted. The rewritable data storage device can be part of an RFID system in which data and power transmission are wireless. Power transmission can also be optional, depending on whether the data storage device is self-powered or wired. Alternatively or additionally, the rewritable data storage device can be implemented as flash memory with a wired interface.Alternatively and / or additionally, an e-paper display can, for example, function as a rewritable data storage device with text, QR codes or barcodes.

[0028] The pallet system can include one or more rewritable data storage devices. A data storage device can also contain partially immutable data, in particular a Unique Identifier, also known as a UID. A UID could be, for example, a unique serial number on an RFID tag. The predetermined machining data can be generated by one or more development systems during the creation of the machine code for programming the machine tool or during product development and the design of the workpiece to be manufactured. Alternatively or additionally, the predetermined machining data can also be internal data of the machine tool control. The data can be influenced by properties such as the material to be machined, the feed rate, the cutting edges used, the desired surface finish, the ambient temperature, and / or the cycle times.

[0029] The control system can read pallet system-specific release data from the pallet system. This pallet system-specific release data can

[0030] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0032] The system must be configured in such a way that it includes data that at least partially corresponds to the predetermined processing data. Because the pallet system-specific release data can be generated independently of the predetermined processing data, inconsistencies in the data set, such as a missing comparison parameter, may arise, which the control system is able to tolerate. This reduces the number of user interventions.

[0033] The control system can compare the pallet system-specific release data with the predetermined machining data (machine-readable, automated pallet system recognition with readable parameters from the pallet / workpiece carrier / clamping device) to enable or prevent the machining operation. This can occur when the pallet system is in the machine tool's receiving area (or is being exchanged), particularly when the pallet system is being inserted into the machine tool's receiving area. Therefore, in the first step, even before machining begins, a so-called two-factor authentication can be performed based on the machine tool's data and the data of the inserted pallet system.Processing can only be authorized once it has been confirmed (e.g., by comparing the ULDs using two-factor authentication) that all correct elements of the pallet system, such as the pallet, mounting components, etc., are present and no incorrect elements exist. This allows for the unambiguous management of various information related to pallets, clamping devices on pallets, and workpiece carriers. This enables, for example, the reduction of the permissible rotational speed according to operator input (the system is usable with individual machines and machines with any level of automation, including robot loading and pallet storage), and the reduction of the clamping force with a corresponding reduction in the rotational speed at the machine table. Thus, a unique assignment of pallets, workpiece carriers, and clamping devices can be achieved within the system for linked machines. Different rotational speeds and...

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[0036] It is also advantageous to enable functions separately, depending on the result of the comparison.

[0037] A further advantage of this design is the use of a sensor matrix for two-factor authentication. For example, the sensors present in a clamping device and / or spindle are configured to be unique. The sum of the data or signals from the sensors forms a unique sensor matrix. The signals or data from the pallet system's memory can be verified against the expected signals from the sensor matrix. Additionally, clamping device detection can be integrated into the pallet interface or the clamping device carrier. Machining release, for example of the machine table, can then be possible both with and without a clamping device.

[0038] Pallet system-specific release data can be read using a data reading device. This device can be installed within the machine tool's receiving area and can access the pallet system-specific release data via wired, tactile, and / or wireless connections, such as radio or visual signals. In particular, the data reading device can be part of an RFID system.

[0039] The predetermined machining data and pallet system-specific release data can include parameters, particularly control parameters of the machine tool, in the configuration information. The control system can set a machine tool parameter to a value from the configuration information of the pallet system-specific release data if the parameter from the predetermined machining data is equal to or greater than the parameter in the configuration information of the pallet system-specific release data. This design further enhances machining safety.

[0040] The predetermined processing data can contain limits to prevent (and / or limit) the start of processing, for example a

[0041] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0043] The maximum permissible clamping force or spindle speed of the machine tool during a predetermined machining sequence for the production of a specific workpiece. Different limit values ​​may apply depending on the workpiece material, for example, when machining steel compared to machining aluminum. The table speed can also be part of the predetermined machining data. If a pallet configured for rotary machining is used, the table's rotary mode can be actively operated at a high table speed. Conversely, if a pallet not configured for rotary machining is used, the table's rotary mode can be used for positioning. In this case, the table speed is set to a low value. Alternatively, the table's rotation can be completely disabled by a corresponding numerical value.This design can therefore further increase security during processing.

[0044] The control system can be configured to prevent (or limit) the start of processing if at least one limit value of the predetermined processing data is equal to or greater than the permissible maximum value of the corresponding critical parameters (hereinafter also referred to as critical information) of the pallet system-specific release data.

[0045] The control system can compare a unique identifier, contained in the pallet system-specific release data, with a predefined comparison parameter from the predetermined processing data, particularly to determine whether the correct pallet system (preferably including superstructures) is present in the receiving area. The predefined comparison parameter can be, in particular, a unique identifier such as a UID. This reduces or eliminates the risk of incorrect processing. Therefore, this design further increases processing safety.

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[0048] The predefined machining data can be made available to the control system via the cloud. In this context, "cloud-based" means that the storage resource is provided in a location other than the immediate vicinity of the machine tool. This solution offers flexibility in an automated process environment with a large number of machine tools. The predefined machining data can be made available to more than one control system. Additionally and / or alternatively, the predefined machining data can also be stored in the control unit of the machine tool and / or in the machine tool itself.

[0049] Predefined machining data can be generated automatically. This process can be carried out concurrently with the design of the workpiece. Alternatively or additionally, the predefined machining data can be created during the programming of the machine tool. Furthermore, or alternatively, the predefined machining data can be generated at the same time as the pallet system-specific release data. User input can trigger the write operation to the rewritable data storage and / or the storage for the predefined machining data. This design further enhances machining safety.

[0050] The pallet system-specific release data can include at least one unique identifier, UID, which is set up to uniquely identify the pallet. The UID can consist of a serial number, an alphanumeric sequence of numbers / letters, and / or a title such as the product or project name.

[0051] The pallet system-specific release data can include identification data for identifying the pallet system, and / or configuration data for setting process parameters of the machine tool and / or critical information, in particular permissible maximum values, for preventing the start of machining.

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[0054] Included with the machine tool. This design further increases safety during machining.

[0055] The pallet system-specific release data can include permissible maximum values, in particular maximum control values, for one or more elements of the pallet system, in order to define a permissible operating range for the pallet system. A permissible operating range can be defined by load limits, for example, depending on the load-bearing capacity of the pallet system or its subcomponents. The permissible maximum values, essentially the configuration data, can be individually defined for different pallet system configurations. The comparison and release of processing can be performed component by component for the pallet system with multiple configurations. In particular, release and / or restriction can be applied to a subset of the pallet system configurations. This design further enhances safety during processing.

[0056] The configuration data of the pallet system-specific release data may contain control parameters of the machine tool, in particular a spindle speed of the machine tool.

[0057] The pallet system-specific release data may contain permissible maximum values ​​to prevent the start of machining, in particular a clamping force, table speed and / or spindle speed of the machine tool.

[0058] The pallet system-specific release data can include multiple unique identifiers (ULDs), in particular at least one for the pallet and one for each assembly element that the specific pallet system comprises. The release process can thus be individually adapted to the requirements of the respective assembly and / or each assembly can be individually identified. For example, processing can only be released once it has been confirmed (by comparing the ULDs as two-factor authentication) that all correct...

[0059] 220465PCDMG MORI Pfronten GmbH July 3, 2025

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[0061] Elements of the pallet system, such as the pallet itself, its components, etc., are present and no incorrect elements exist within the system. For example, a user might incorrectly assemble the pallet system components. In such a case, the comparison can detect, for instance, that a specific UID does not match the predefined processing values. An error message can then be issued, and the processing start can be blocked for security reasons. This design further enhances processing security.

[0062] A method for controlling a machine tool is proposed, which may include reading the pallet system-specific release data from a rewritable data storage device located in the receiving area of ​​the machine tool and comparing the pallet system-specific release data with predetermined machining data to release machining of the machine tool.

[0063] Furthermore, a method is proposed which can set a parameter, in particular machining parameters of the machine tool, to a value of the configuration information of the pallet system-specific release data if the value of the configuration information of the predetermined machining data is equal to or greater than the value of the configuration information of the pallet system-specific release data (or preferably does not correspond to the value of the configuration information).

[0064] Furthermore, a procedure is proposed whereby machining by the machine tool is not started if a permissible maximum value of the predetermined machining data is equal to or greater than the limit value of the pallet system-specific release data.

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[0067] Brief description of the characters

[0068] Figure 1: schematically shows the process steps for releasing machining with a machine tool

[0069] Figure 2: shows a flowchart of an exemplary embodiment for enabling machining with a machine tool

[0070] Figure 3: shows a first application example of a release process. Figure 4: shows a second application example of a release process. Figure 5: shows a third application example of a release process. Figure 6: shows a flowchart of a further embodiment for releasing machining with a machine tool.

[0071] Figure 7: shows a fourth application example of a release process. Figure 8: shows a fifth application example of a release process. Figure 9a: shows a bottom side of a palette in oblique view.

[0072] Figure 9b: shows a detailed view of a palette in oblique view

[0073] Figure 10a: shows an oblique view of a receiving area of ​​a machine tool

[0074] Figure 10b: shows a detailed oblique view of a recording area of ​​a machine tool

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[0077] Detailed description of the figures

[0078] Exemplary embodiments of the present invention are described in detail below with reference to exemplary figures. The features of the exemplary embodiments can be combined in whole or in part, and the present invention is not limited to the described exemplary embodiments.

[0079] Figure 1 schematically illustrates the process steps of the release procedure for starting machining on a machine tool 6. Starting at the human-machine interface 10, the figure shows the preparation process that a pallet system undergoes. A pallet 1 for holding one or more workpieces 3 is assigned to a manufacturing process and moved to a setup station. The pallet 1 comprises at least one assembly. An assembly can refer to fastening elements such as clamps, chucks, or clamping bridges. The term "assembly" can also refer to the workpiece 3 itself, which may enter the initial process as an unmachined blank or may have already undergone machining steps. The workpieces 3 are placed in the workpiece holder 4 at the setup station. A workpiece holder 4 can, for example, be a clamping element onto which the workpiece 3 is secured with a defined clamping force.The combination of the workpiece material 3 and the clamping force results, for example, in a maximum permissible spindle speed of the machine tool 6. It is also conceivable, for instance, that the entire pallet system, including the machining setups, is moved, such as linearly or rotaryally. The user can collect this information at the setup station and transfer it to a human-machine interface 10, such as a computer with a keyboard or a tablet. The pallet system-specific release data is written to the rewritable data storage device 2 using the data write device 8.

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[0082] The pallet system can consist of at least one pallet 1, at least one rewritable data storage device 2, and at least one assembly. A pallet 1 is practical for handling workpieces, particularly in multi-step manufacturing processes. The rewritable data storage device 2 can be, for example, an RFID tag, flash memory, or e-paper. Pallet system-specific release data can be stored on the rewritable data storage device 2. Assembly devices include, for example, workpieces 3 and / or workpiece fixtures 4 such as clamps, screws, threads, or clamping devices.

[0083] Data storage device 2, for example, is an RFID tag and, in an optional version, has a diameter of 20 mm and a thickness of 3 mm. The tag contains a non-volatile, rewritable memory chip. The chip can, for example, have a capacity of 2048 bytes. The electronics are encased in a polyphthalamide (PPA) shell, ensuring resistance to liquids such as coolants or lubricants. Furthermore, the tag can include a coil that serves as an antenna for both power supply and data transmission.

[0084] Alternatively or additionally, a USB storage device could be used, which, when the pallet system is placed in the receiving area 13, establishes a wired data exchange with the control unit 7. Alternatively again, a rewritable e-paper display, which stores and displays information in a 2D code, could take the same position. The reading and writing devices 8 would need to be adapted accordingly.

[0085] After the writing process (which is preferably carried out at the setup station), the pallet system can be stored. If the resource management system has assigned a machine tool 6 to the pallet system, it is moved to the receiving area 13 of the machine tool 6.

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[0088] At a time directly related to the arrival of the pallet system in the receiving area 13, the data reading device 9 reads the pallet system-specific release data from the rewritable data storage 2 and makes the pallet system-specific release data available to the control unit 7.

[0089] Figure 1 shows the generation of the predetermined machining data, starting at the human-machine interface 11. For example, a user responsible for programming the machine tool 6 enters the predetermined machining data into the human-machine interface 11. Alternatively, the predetermined machining data can be generated automatically after programming. This task can be performed by a computer system with or without subsequent user control. Alternatively, the generation of the predetermined machining data could be carried out in the same step along with the pallet system-specific release data. Optionally, user input can be used to control the writing of the rewritable data memory 2, or to make the predetermined machining data available to the control system.

[0090] In the next step, the predetermined machining data is transferred to a cloud storage location 12. There, the predetermined machining data is available to the control unit 7. Alternatively, the predetermined machining data can be transmitted directly to the control unit 7, or the human-machine interface 11 could be part of the unit consisting of the machine tool 6 and the control unit 7.

[0091] Figure 2 shows the process steps of the release process as a flowchart. The first column shows steps S1.1 to S1.3 of the pallet system-specific release data up to comparison step S3, and the second column shows steps S2.1 to S2.3 of the predetermined processing data.

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[0094] In step SI.1, the pallet system-specific release data is generated, for example by a user, as described in Figure 1. Subsequently, the pallet system may be stored or moved to another location until it is moved to the receiving area 13 of the machine tool 6 in step S1.3. The pallet system-specific release data is read from the rewritable data storage 2 in the pallet system into the control system. This reading is performed, for example, by the data reading device 9. The data can remain on the data storage or be deleted after successful transfer.

[0095] The second column explains steps S2.1 to S2.3 up to the comparison step S3 of the predetermined machining data. As described in Figure 1, the predetermined machining data is generated in step S2.1. In step S2.2, the predetermined machining data is transferred to a storage unit so that it can be read into the control system in step S2.3. Steps S2.2 and S2.3 can also be skipped depending on the system architecture.

[0096] In step S3, the pallet system-specific release data and the predetermined machining data are compared. In control unit 7, the data are compared. Based on this comparison, the machining process is either released with restrictions or prevented from starting (S4). (Optionally, depending on the comparison result, only specific speeds and / or functions can be enabled.) Therefore, even before machining begins, automated two-factor authentication can be performed based on the data from the machine tool (control) and the data from the inserted pallet system. This is preferably performed automatically when the pallet system is inserted (as soon as the pallet system is, for example, in the machine tool's work area). Machining can only be released after confirmation (e.g., by comparing the ULDs as two-factor authentication).

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[0099] Authentication) verifies that all correct elements of the pallet system, such as the pallet, mounting components, etc., are present and that no incorrect elements are present in the pallet system. The information to be compared can advantageously include at least one permissible rotational speed, a machining operation (such as milling or turning), and the type or design of the clamping device. In a further advantageous development, a sensor matrix with unique assignments can be used to check the consistency of the data in combination with the signals generated by the clamping device / pallet / workpiece carrier. Different rotational speeds and functions can be enabled separately.

[0100] This enables the unambiguous management of diverse information regarding pallets, clamping devices on pallets, and workpiece carriers. This allows, for example, the reduction of the permissible rotational speed according to operator input (the system is usable with individual machines and machines with any level of automation, including robot loading and pallet storage) and the reduction of the clamping force, which in turn reduces the rotational speed at the machine table. Thus, a clear assignment of pallets, workpiece carriers, and clamping devices can be achieved within the system for linked machines.

[0101] Figure 3 illustrates the release process using an example. The pallet system-specific release data includes identification data, configuration data, and critical information. The identification data primarily serves the purpose of identification. In this example, the pallet system has been assigned a unique identification number, enabling unambiguous identification. In this example, the identification data is not automatically configured to release the start of processing. For example, using an ERP system, additional data linked to the identification data can be retrieved. Furthermore, the pallet system-specific release data includes configuration data, such as the spindle speed NP in this example. The spindle speed describes...

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[0104] In this example, the spindle speed at which the milling cutter of machine tool 6 is operated is used. The spindle speed is set such that it is used for configuring machine tool 6. Furthermore, the pallet system-specific release data includes critical information, such as the clamping force F in this example. P The critical clamping force information in this example represents a permissible maximum value. This critical information is designed to prevent the machine tool from starting. The spindle speed can also be critical information.

[0105] The predetermined machining data includes configuration data such as the spindle speed Nv and the critical information of the clamping force Fv.

[0106] The comparison uses comparable data, in this case N. P and Nv, as well as F P and F vThey are compared. Regarding the critical information, it is essential that a numerical value of the pallet system-specific release data is higher than the comparable numerical value of the predetermined processing data. In the case of clamping force, this results in the condition F. P > Fv. This condition is met in this specific example. Approval can be granted. The configuration data is then compared. The spindle speed N P is greater than the spindle speed Nv, and therefore does not represent a limitation. The maximum spindle speed of the machine tool NM is reduced to the spindle speed N. P set. The actual spindle speed used is determined by the machine tool's programming and can also be lower than N. M stand out.

[0107] Figure 4 shows another application example. A modification of the first application example concerns the identification data of the pallet system-specific release data. Instead of an identification number, a title of the pallet system is used. The clamping force F P and the spindle speed Nv is higher, the spindle speed N P lower than in Figure 3. The critical information F P and Fv are compared with each other. F P is of higher value than the numerical value of the critical data of the predetermined machining data; consequently, a release can be granted. The spindle speed N P the pallet system-specific

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[0110] The release data is lower than the spindle speed Nv of the predetermined machining data. To avoid exceeding the predetermined value, the maximum spindle speed of the machine tool NM is reduced to the value of the pallet system-specific release data, i.e., N. P , fixed. The release therefore does not occur as specified in the predetermined machining data, but is reduced by the parameter of the spindle speed.

[0111] Figure 5 shows another application example. In comparison to the previous application examples, the pallet system-specific release data and the predetermined processing data contain identification data, configuration data, and critical information for multiple workpieces mounted on a pallet.

[0112] The identification data is used to assign the information to be compared; in this specific example, line by line.

[0113] For the example of a "paddle wheel", the clamping force FP is lower than in the last application example; the other numerical values ​​are higher or the same. A comparison of F P and Fv indicates that FP has a low-value numerical value, which means that machining for the workpiece "paddle wheel" is not permitted.

[0114] The example “cylinder head”, which is attached to the same pallet, carries the configuration data and critical information of the example from Figure 3. Comparing the critical information yields F P > Fv. The release is granted under setting the maximum spindle speed with NM = N P granted.

[0115] Another embodiment is shown in Figure 6. This figure is structured as a flowchart analogous to Figure 2. The difference lies in the addition of the extra work step S3.2. After comparing the pallet system-specific release data with the predetermined processing data, process optimization is possible. If necessary, a process that is classified as not eligible for release can be...

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[0118] The settings can be modified to make the machine ready for release. Preferably, this can be done automatically, with information regarding the modification being output to the user (and / or directly at the machine tool).

[0119] Figure 7 shows an application example for the extended embodiment from Figure 6.

[0120] In this example, the pallet system includes a clamping device with a unique identification number. This UID is contained in the pallet system-specific release data. The predetermined processing data dictates that a specific clamping device must be used. This is critical information and should be understood as a limit value.

[0121] The comparison of the pallet system-specific release data with the predetermined processing data shows, analogous to the previous examples, that releasing the processing start is permissible (F P > F v and N P > Nv). Additionally, the critical information of the clamping device UID is compared. Since this is identically contained in the predetermined processing data and the pallet system-specific release data, processing approval can also be granted in this respect.

[0122] In this example, the simplified assumption is that the spindle speed is directly proportional to the clamping force. The greater the clamping force, the higher the spindle speed can be under this assumption. Furthermore, it is advantageous for machine tool 6, workpiece 3, and other influencing factors to keep the clamping force and speed parameters as low as possible. In the example shown, machining on machine tool 6 could be started as specified by the pallet system-specific release data. Alternatively, the clamping force in the pallet system is set to the value F. P ' of the predetermined processing data Fv reduced. Accordingly, the

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[0125] The spindle speed (MM) of the machine tool is reduced to a value NP'. This protects the aforementioned process components from stress during the planned machining process. The clamping force is indeed reduced in this case.

[0126] Figure 8 shows another application example for the extended embodiment from Figure 6. In contrast to the application example in Figure 7, the clamping force FP of the pallet system-specific release data is lower than the clamping force Fv of the predetermined machining data. Therefore, enabling machining by the machine tool 6 is not permitted in the first step.

[0127] Furthermore, the decision data includes, for example, information about the clamping device type. The critical information that it is a high-speed-capable clamping device is contained in the pallet system-specific release data. According to the predetermined machining data, a high-speed-capable clamping device is required to start machining. This criterion is met and does not prevent release.

[0128] As described above, this example assumes a directly proportional relationship between clamping force and permissible spindle speed. The numerical pair F and N allows for the calculation of a reduced speed N. P 'determine in such a way that the clamping force on the pallet system corresponds to the clamping force F specified from the predetermined machining data vis at least equivalent. The spindle speed of machine tool 6 is set to NM = NP'. The clamping force F is not actually increased in the example shown. Machining can be started under restrictions despite the insufficient numerical values ​​of the pallet system-specific release data.

[0129] Figure 9a shows the underside of a pallet 1 in an oblique view. Attachments such as clamping devices or workpieces 3 can be mounted on the side of the pallet 1 facing away from the viewer. At the top of the figure, in the

[0130] 220465PCDMG MORI Pfronten GmbH July 3, 2025

[0131] 22

[0132] The side surface has grooves for inserting T-nuts. Auxiliary elements such as clamps for workpieces can then be attached to these grooves.

[0133] The central section in area A is shown in Figure 9a. Around this section are four drawbars 16, to which the pallet 1 is centered and fastened in the receiving area 13 of the machine tool 6. Around the outside of this section are recesses for mass reduction and balancing of the pallet 1. The geometry of the underside of the pallet 1 is designed to prevent incorrect assembly with respect to orientation.

[0134] A detailed view of area A is shown enlarged in Figure 9b. The central section comprises several screw connections that connect it to the main component of the pallet 1. Data and / or energy can be transferred to and / or from the pallet 1 via the interfaces 14 of the pallet 1. A rewritable data storage device 2 is located on the underside. For example, for maintenance and for free access for writing or reading, the rewritable storage device 2 is positioned for easy access.

[0135] Figure 10a shows the receiving area 13 of the machine tool as the counterpart to the pallet 1 from Figures 9a and 9b. The clamping cones 17 engage the drawbars 16 and clamp the pallet 1 automatically, reproducibly, and securely in the receiving area 13 of the machine tool. Figure 10b shows area A enlarged, analogous to Figure 9b. The interfaces of the machine tool 15 correspond to the interfaces of the pallet 14. These are docked together for signal and / or power transmission.

[0136] The data reading device 9 is integrated into the receiving area 13 of the machine tool 6. It is designed to be open, enabling wireless data transmission.

[0137] 220465PCDMG MORI Pfronten GmbH July 3, 2025

[0138] 23

[0139] The features, components, and specific details provided can be exchanged and / or combined to create further embodiments, depending on the required purpose. Any modifications that are within the knowledge of a person skilled in the art are implicitly disclosed in this description.

[0140] 220465PCDMG MORI Pfronten GmbH July 3, 2025

[0141] 24 reference marks

[0142] 1 pallet

[0143] 2 rewritable data storage 3 workpiece

[0144] 4 Workpiece holder

[0145] 6 machine tool

[0146] 7 Control unit

[0147] 8 Data writing device

[0148] 9 Data reading device

[0149] 10, 11 Human-Machine Interface

[0150] 12 cloud storage options

[0151] 13 Recording area

[0152] 14 Interface Palette

[0153] 15 Machine tool interface 16 Drawbar

[0154] 17 Clamping cone

[0155] 220465PC

Claims

DMG MORI Pfronten GmbH July 3, 2025 25 Patent claims 1. Control system for a machine tool (6), with a receiving area (13) for receiving a pallet system, which includes at least one pallet (1) and pallet system-specific release data; the control system includes: Control system-predetermined machining data for releasing machining on the machine tool (6), wherein the control system is set up, When the pallet system is received in the receiving area (13), the pallet system-specific release data is read from a data carrier of the pallet system and compared with the predetermined processing data of the control system in order to preferentially release processing on the machine tool (6).

2. Control system according to claim 1, further comprising a data reading device (9) which is set up to read the pallet system-specific release data, when the pallet system is received in the receiving area (13), preferably automatically.

3. Control system according to at least one of the preceding claims, wherein the predetermined machining data includes at least configuration information of the machine tool (6) and wherein the configuration information includes in particular permissible and / or set working ranges of the machine tool (6), in particular a spindle speed range, a table speed range, a clamping force range of a clamping means and / or a feed range.

4. Control system according to at least one of the preceding claims, wherein 220465PCDMG MORI Pfronten GmbH July 3, 2025 26 a parameter of the predetermined machining data, in particular a control parameter of the machine tool (6), is set to a setting value of the pallet system-specific release data if the parameter of the predetermined machining data is greater than the corresponding parameter of the pallet system-specific release data, in particular before the release of the machining.

5. Control system according to at least one of the preceding claims, wherein the predetermined machining data includes limit values ​​for preventing the start of machining, in particular a maximum rotational speed and / or a maximum clamping force, of the machine tool (6).

6. Control system according to at least one of the preceding claims, wherein the processing is not started if at least one limit value of the predetermined processing data is greater than a permissible maximum value of the pallet system-specific release data.

7. Control system according to at least one of the preceding claims, wherein the control system is configured to compare a unique identifier contained in the pallet system-specific release data with a predefined comparison parameter of the predetermined processing data, in particular to determine whether the correct pallet system is present in the receiving area (13).

8. Control system according to at least one of the preceding claims, wherein the predetermined processing data is provided in a cloud-based manner.

9. Control system according to at least one of the preceding claims, wherein the predetermined processing data are generated automatically. 220465PCDMG MORI Pfronten GmbH July 3, 2025 27 10. Control system according to at least one of the preceding claims, wherein the data reading device (9) is part of an RFID system.

11. Pallet system, comprehensive: a pallet (1); at least one structure; and a rewritable data storage device (2) that is integrated into the pallet (1); and which stores pallet system-specific release data for releasing a machining operation on the machine tool (6).

12. Pallet system according to claim 11, wherein The assembly includes a workpiece (3) and / or at least one clamping device.

13. Pallet system according to at least one of claims 11 to 12, wherein the pallet system-specific release data includes identification data for the unique identification of the pallet system.

14. Pallet system according to at least one of claims 11 to 13, wherein the pallet system-specific release data comprise permissible maximum values, in particular maximum control values, of one or more elements of the pallet system in order to define in particular a permissible operating range of the pallet system.

15. Pallet system according to at least one of claims 11 to 14, wherein the pallet system-specific release data includes configuration data for setting the control parameters of the machine tool (6), in particular a spindle speed, a table speed, a clamping force and / or a feed rate, of the machine tool (6).

16. Pallet system according to at least one of claims 11 to 15, wherein 220465PCDMG MORI Pfronten GmbH July 3, 2025 28 the pallet system-specific release data shall include several unique identifiers, UlDs, in particular at least one for the pallet (1) and one for each assembly element that comprises the specific pallet system; and / or wherein the pallet system-specific release data contains permissible maximum values ​​to prevent the machining of the machine tool from starting.

17. Pallet system according to at least one of claims 11 to 16, wherein the rewritable data storage (2) is part of an RFID system.

18. Method for controlling a machine tool (6), wherein the method comprises the steps: Reading the pallet system-specific release data from a rewritable data storage device (2) of a pallet system located in the receiving area (13); Comparing the pallet system-specific release data with predetermined machining data to release machining on the machine tool (6).

19. Method according to claim 18, wherein a parameter for the machining of the machine tool (6) is set to a value of the configuration information of the pallet system-specific release data if the value of the configuration information of the predetermined machining data is equal to or greater than the value of the configuration information of the pallet system-specific release data.

20. Method according to at least one of claims 18 or 19, wherein the processing is not started if a permissible maximum value of the predetermined processing data is equal to or greater than the limit value of the pallet system-specific release data.

21. Computer-based method which, when applied to a the 220465PCDMG MORI Pfronten GmbH July 3, 2025 29 Control system according to claim 1, controllable computing unit, the control system according to claim 1 causes at least the process steps according to claim 18 to be carried out. 220465PC

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