Method of operating a textile machine and the textile machine

Abstract

To provide a method of operating a textile machine (1), particularly a spinning machine, that provides an itemized operating parameter (5) by an item management system (3).SOLUTION: There is provided a method of operating a textile machine, comprising: providing an itemized operating parameter (5) as a constant value; providing a machine-ready correction factor (6); and calculating an operating parameter (7) adjusted to individual conditions of the textile machine (1) from the itemized operating parameter (5) and the correction factor (6). There is further provided a textile machine (1), particularly a spinning machine, having a controller (4) and an item management system (3) for performing the method.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an operating method for a textile machine, particularly a spinning machine, which provides item-corresponding operation parameters by an item management system. The present invention further relates to a textile machine, particularly a spinning machine, having a controller and an item management system.

Background Art

[0002] It is known that in yarn manufacturing textile machines, particularly spinning machines, yarns can be manufactured from different raw materials and / or have different properties. In this specification, a specific yarn is also called an item, and the period for manufacturing a specific yarn or a specific item is called a batch. A specific item is associated with a specific set of operating parameters of a textile machine, also known as a manufacturing method. The set of operating parameters means a plurality of parameter settings for selected operating elements of a textile machine. The above parameter settings can include the rotational speed of rollers or the target value of the operating distance between two elements that can be adjusted relative to each other.

[0003] Currently, the operating parameters of a textile machine can change automatically or can be changed by software. The set of operating parameters can be optimized, for example, in a test system and then stored in a database. Therefore, it is desirable to apply the created manufacturing method to a plurality of textile machines arranged, for example, in different locations and / or used by different operators.

[0004] For example, DE102004014257A1 describes an item and process management system for textile machinery systems. This system allows for the recall and centralized storage of processes. These processes are also editable in the control units of each machine within the textile machinery system and are therefore adaptable to specific individual machines. This solves the problem of not being able to generalize the set of operating parameters without adding work for machines of different series and different years of service. Due to differences in series, the effects of aging, and manufacturing tolerances, the quality of yarn produced by machines can vary significantly even when using the same process. While these differences can be partially compensated for by increasing material utilization, this is undesirable from a commercial standpoint. DE102004014257A1 centrally stores edited processes within the textile machinery system, thereby creating individual "machine processes" for specific machines. While this may be a suitable solution for a closed system in a single plant, applying this form to machines in different locations and / or operated by different operators is impossible or difficult. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] German Published Patent Publication DE102004014257A1 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] Therefore, an object of the present invention is to improve the technical state with respect to the indicated drawbacks. [Means for solving the problem]

[0007] This objective is achieved by a method and textile machine having the features of an independent claim.

[0008] According to the operating method of a textile machine, particularly a spinning machine, according to the present invention, item-specific operating parameters are provided to the textile machine by an item management system. The present invention proposes providing item-specific operating parameters as constant values, further providing machine-specific correction coefficients, and calculating operating parameters adjusted to the individual conditions of the textile machine from the item-specific operating parameters and machine-specific correction coefficients.

[0009] The item management system is understood to be a database that is connected to the controller and user interface of a textile machine and can provide the textile machine with item-specific operating parameters. As mentioned above, item-specific operating parameters are a set of parameter settings for various components of the textile machine, enabling the textile machine to produce specific products from specific raw materials having specific characteristics. Typical raw materials are, for example, cotton, and the most important characteristics of the yarn include thickness, fluffiness, and twist. Typical parameter settings may be, for example, a specific rotation speed, or a rotation speed ratio of a specific component that is particularly suitable for producing an item.

[0010] The method according to the present invention strictly separates item-specific operating parameters or manufacturing processes from operating parameters individually adjusted for each machine. When using machines of different series and different years of service, machine-specific correction factors can provide manufacturing processes that ensure consistent product quality. In this way, different software versions and / or manufacturing tolerances of individual machines can also be compensated for. Machine-specific correction factors may be defined by the manufacturer when the machine is assembled and provided with the machine, and may be aggregated in an item management system. As described below, machine-specific correlation coefficients may be determined by the operator only when the machine is running, or after a batch has been changed.

[0011] As mentioned above, item-specific operating parameters can be generated, for example, in a test system of a textile machinery manufacturer. These parameters may be provided to each operator in the form of a database. This database may be stored locally at the operator's location or may reside on a server connected to the Internet, for example. Preferably, such a database includes, in addition to the operating parameters, information about the products manufactured therefrom and the time it took to create the operating parameters.

[0012] Furthermore, it is conceivable that each operator of a textile machine generates and saves item-specific operating parameters. Naturally, this can be combined with the aforementioned options, and as a result, each operator can supplement the set of part-specific operating parameters provided by the manufacturer. However, it is preferable that item-specific operating parameters, once defined for a particular product, should not be changed.

[0013] Specifically, the item-specific operating parameters may be, in the case of a spinning machine, particularly a rotor spinning machine, the expansion and contraction traction and rotational speed of the rotor and opening roller. In other words, these parameters are determined by the control values ​​of the electric motors that control the corresponding components. Higher-level parameters (such as rotational speed) are stored in the item management system and, when applied, are converted to corresponding control values ​​by the textile machine's controller. Alternatively, basic parameters such as motor control values ​​may be stored in the item management system and applied directly. The same applies to correction coefficients and adjusted operating parameters.

[0014] The correction factor is a numerical value used to adjust the item-specific operating parameters to match the conditions that exist individually in a particular textile machine. In contrast to the data provided by the item management system, the correction factor is generally applicable to only one specific machine. Therefore, the correction factor must also be created in the aforementioned specific machine and preferably stored in that machine.

[0015] The correction factors can be defined by the user of the textile machinery, for example, by directly refining them until the desired quality and characteristics of the manufactured product are set. For this purpose, it is preferable that the textile machinery or the controller of the textile machinery has a corresponding user interface. In particular, the first set of correction factors may be determined by the manufacturer during the manufacture of the textile machinery or during the initial commissioning.

[0016] For example, a user may manually adjust the parameter settings of specific components, starting from item-specific operating parameters provided by the item management system, until the desired quality and characteristics of the manufactured product are set. The textile machine and its controller can then autonomously calculate a correction factor from the difference between the data from the item management system and the manually set parameters of the textile machine components, and preferably store the correction factor in the textile machine.

[0017] In addition to the above description, or possibly exclusively, sensors in textile machinery, particularly those for yarn monitoring, may also be used to directly adjust specific parameter settings or correction coefficients of components until the desired quality and / or characteristics of the product are achieved. Thus, for example, the textile machinery or the controller of the textile machinery can autonomously determine the correction coefficients.

[0018] As mentioned above, the correction coefficients are preferably stored locally in the textile machine, for example, in memory connected to the controller. Of course, it is also conceivable to centrally store the correction coefficients for different textile machines in a single system. In addition to these correction coefficients, information regarding the association of the correction coefficients with individual item-specific operating parameters is particularly stored. Furthermore, information about the textile machine, such as the model and / or years of service of installed components, and potentially the overall service life of the textile machine, can also be stored. The correction coefficients are preferably modified via a corresponding user interface.

[0019] It is preferable that the calculation of the adjusted operating parameters from the item-specific operating parameters and correction coefficients be performed by the textile machine's controller. However, the calculation operation may also be performed by an external computer system, for example. The calculation may be performed automatically by the controller as soon as the user sets up the machine for a new batch in the usual manner. However, it is also possible that the adjustment of the operating parameters should only be performed when requested by the user. Although the term "correction coefficient" is used, other mathematical operations besides multiplication are also possible. These operations include, for example, addition, subtraction, and / or exponentiation.

[0020] The result of such operations is adjusted operating parameters, which are preferably transmitted by the textile machine's controller to the individual components being adjusted and applied to them. The adjusted operating parameters are preferably not permanently stored but are recalculated for each batch. This facilitates the separation between the item-specific operating parameters of the item management system and the adjusted operating parameters applicable to a particular machine.

[0021] This method offers the advantage of arbitrarily readjusting the limit correction coefficients within the necessary range. This means redefining the correction coefficients if the desired results do not appear in the item despite the correct selection of operating parameters and correction coefficients. Individual conditions of textile machinery can change over time. These changes mainly include the effects of aging of the components. Therefore, it is advantageous to adjust the correction coefficients to ensure consistent product quality. This adjustment can be done manually, for example, by the user entering new correction coefficients. However, it is also conceivable for the user to readjust the individual parameter settings of the textile machinery and derive a new correction coefficient from the difference between the parameter settings provided by the item management system and the item-specific operating parameters, and then save this coefficient.

[0022] It is even more advantageous to automatically readjust the correction factor. The readjustment can occur, for example, as a function of the age of the individual components or of the fiber machine as a whole. Specific sensor data may be used to adjust the correction factor.

[0023] It is particularly advantageous to perform the readjustment of the machine-specific correction factor based on the power consumption, the thread breakage rate and / or the thread hairiness of the individual components. In order to guarantee a consistent quality of the product, the power consumption, for example, can indicate the influence of certain wear that needs to be compensated. Since the fiber machine for producing or processing the thread stops at least briefly each time a thread break occurs, a high thread breakage rate should be avoided from a cost-effectiveness perspective. The thread breakage rate is reduced by adjusting specific operating parameters. Here, an improvement can be achieved particularly by reducing the production speed using the correction factor. Hairiness is a typical quality characteristic of the spun yarn and is a change that needs to be addressed by adjusting the operating parameters. Here too, the correction can be made by changing the production speed using the correction factor.

[0024] It is even more advantageous to store the correction factor in the fiber machine and reapply it to the provided operating parameters when a batch change occurs. In this way, the separation between the item-specific operating parameters of the item management system and the operating parameters adjusted according to a specific fiber machine can be maintained. By reapplying the correction factor when a batch change occurs, a consistent quality of the manufactured product can be ensured. As described above, a batch is changed when changing from the production of one product to the production of a different product or a different lot of the product. The batch change can be effected by the correction factor without consuming time for manual adjustment of the fiber machine.

[0025] Each textile machine preferably includes a memory used to store correction factors, and which is particularly connected to the machine's controller. Alternatively, the correction factors may be stored centrally for at least a specific operator of the textile machine and / or within the system. For this purpose, the conventional networking and central data processing systems of the textile machines can be used. Furthermore, the correction factors may be stored in memory corresponding to the textile machine, such as a mobile data storage medium.

[0026] In an advantageous and improved embodiment of the present invention, the item management system stores a range of tolerances for one or more correction factors. Thus, the calculated or separately determined correction factor is applied only if it falls within the tolerance range. The above limits on the correction factors ensure that, despite adjustments by the correction factors, all parameter settings remain within the intended safe parameter range. This improves the safety of the textile machinery and the service life of its components. Furthermore, limits on the adjusted operating parameters may be stored in the item management system, thereby limiting the potential range of correction factor values. The range of correction factor values ​​may be displayed on the textile machinery display element in the corresponding user interface.

[0027] It is particularly advantageous if the individual conditions of the fiber machine compensated by the correction factor are due to the effects of aging and / or manufacturing tolerances and / or type-related individual conditions. These conditions have a particularly strong influence on the quality of the products to be manufactured. Therefore, there is particular interest in compensating for said conditions. By compensating for the effects of aging, particularly wear, with a correction factor, worn parts can be replaced later, thereby saving operating costs. In the case of spinning machines, particularly rotor spinning machines, the effects of aging can include, for example, wear of the opening rollers or their mountings, extraction nozzles and spinning rotors, and belt deterioration-related expansion. Wear of the coatings on the take-up rollers and extraction rollers may also be included. The effects of manufacturing tolerances and / or assembly tolerances can be seen in slightly different gap dimensions, component dimensions, moments of inertia of rotating components and / or different efficiencies of electrical components. Type-related conditions include different characteristic values of different components, different software versions and / or different performance capacities of electronic devices.

[0028] It is even more advantageous if the operating parameters include the rotational speed and / or rotational speed ratio and / or switch-on time and / or number of movements, particularly the rotational speed, of one or more components.

[0029] In particular, changes in the rotational speed of rotating components can compensate for many conditions that occur on the fiber machine and have a major impact on the products to be manufactured. Thereby, the rotational speed is mainly determined by the operating parameters of the drive motor. These parameters may be specifically adjusted by a correction factor. Thereby, both an increase and a decrease in the rotational speed can be advantageous. For example, in a rotor spinning machine, for the aging-related wear of the mounting of the opening roller, the rotational speed of the opening roller can be adjusted using a correction factor to ensure a consistent opening of the fiber bundle. Furthermore, the rotating components particularly include the spinning rotor, the extraction roller and the bobbin drive roller.

[0030] An example of the rotational speed ratio is the stretching and pulling force on the rotating machine, which can change due to wear of the coatings on the bobbin roller and the extraction roller.

[0031] For example, when cleaning a rotor, the switch-on time for pneumatic or mechanical cleaning components can be defined for a specific item and adjusted to the current machine conditions using a correction factor. Wear on the cleaning components can also be compensated for by the correction factor. Similarly, for pneumatic yarn capture, a specific switch-on time for the suction nozzle may be defined as an operating parameter. The operating parameter may also include the switch-on time for pneumatic or mechanical yarn end processing.

[0032] In contrast, for other components, rotational speed and switch-on time are less important; instead, the number of rotations or movements required to provide a defined length of yarn or fiber material, or to reach a defined position for the component, is important. One example here is the bobbin drive unit returning the yarn from the bobbin.

[0033] It is even more advantageous to provide machine-compatible correction factors for a single workstation and / or a group of workstations and / or the entire textile machine of a textile machine. Some modern textile machines include multiple units that operate independently. The smallest production unit is typically called a workstation. An autonomous workstation of a textile machine receives electrical and control commands from the textile machine but is simply independent of other workstations. Thus, the above workstation has a set of components, and different individual conditions can exist in different workstations. Different workstations of the same textile machine can also produce different products. For this reason, it is desirable to define different correction factors for different workstations.

[0034] It is even more advantageous to display the provided operating parameters and / or correction factors and / or adjusted operating parameters on the textile machine's display. It is particularly advantageous to display the provided operating parameters together with the correction factors and / or adjusted operating parameters on the textile machine's display element. This is mainly advantageous for manually readjusting the correction factors and / or adjusted operating parameters. If the range of values ​​for the correction factors and / or adjusted operating parameters is defined by the item management system, the above ranges may also be specifically displayed. Depending on the magnitude of the correction factors, the user can estimate whether maintenance or replacement of the textile machine's components will soon be required. However, it is also possible that, even though the provided operating parameters have been corrected with the correction factors, only the provided operating parameters are displayed, as before, instead of the adjusted operating parameters.

[0035] According to an improved embodiment of the method, generating new item-specific operating parameters is advantageous in that it involves calculating correction factors from the current parameter settings and / or adjusted operating parameters of the textile machine.

[0036] For example, in textile machinery, when manufacturing a new item for which item-specific operating parameters are not yet available, the process may begin using the item-specific operating parameters of a similar item. Then, to provide adjusted operating parameters suitable for the similar item, it is preferable to apply the correction factors stored in the machine to the item-specific operating parameters of the similar item, as described above. The coefficients are then further readjusted in a number of user tests, optionally using the current parameter settings, until the desired yarn quality for the new item is achieved. The correction factors are then "removed" from the current parameter settings, thereby obtaining new item-specific operating parameters for the new item. These parameters can then be stored in the item management system.

[0037] Similarly, it is natural that the item-specific operating parameters for a particular item may be modified. For example, if the desired result is not obtained even after accurately selecting the item-specific operating parameters and correction factors, and it can be ruled out that this is not due to the current machine conditions, it may indicate that the item-specific parameters must be modified. In this case, the correction factors are not readjusted; instead, the adjusted operating parameters are readjusted until the desired result is obtained. As described above, in order to derive the correction factors, the new item-specific operating parameters for a particular item are calculated from the adjusted and readjusted operating parameters and fed back into the item management system.

[0038] In a further advantageous embodiment of the method, the correction coefficients are stored in a database independent of the textile machinery, along with information about the textile machinery. The database may be used, in particular, for developing textile machinery or for manufacturers to provide future item-specific operating parameters. Any relationship between the service life of the components required to compensate for the effects of aging and the correction coefficients can then be derived.

[0039] It is advantageous in this context that the database is part of an expert system. An expert system is a computer program that can derive and extrapolate general relationships from a database of causal parameters. Such a system can potentially autonomously derive correction factors from general information about textile machinery, such as the years of use of the machinery and the years of use of various work elements, and corresponding historically manually set correction factors. Sensor data and / or data on the power consumption of individual components of the textile machinery may also be used to train the expert system, which can then be used to automatically determine the correction factors accordingly. It is also conceivable that the expert system could support the user when readjusting the correction factors.

[0040] The present invention relates to a textile machine having a controller and an item management system, and proposes that the controller receives item-specific operating parameters provided as constant values ​​by the item management system, and calculates operating parameters adapted to the individual conditions of the textile machine from the item-specific operating parameters and machine-specific correction coefficients.

[0041] The textile machine is specifically designed to carry out the method described above. Therefore, the aforementioned advantages of this method can be applied to the textile machine according to the present invention.

[0042] The textile machinery may be, for example, a spinning machine, particularly a rotary spinning machine. The machinery may include multiple workstations that are substantially independent of each other and preferably subdivided into multiple functional groups. For data exchange, the textile machinery includes corresponding interfaces, such as network connections. Typical relevant operating parameters in the textile machinery are, in particular, the current and voltage of the mounted electric motors. The textile machinery preferably further includes a data memory suitable for storing correction factors. The memory is connected, for example, to the controller of the textile machinery. The textile machinery includes a display for indicating item-specific operating parameters and / or correction factors, and / or potentially a specified range of values ​​for the correction factors or adjusted operating parameters. The display may also be used as a user interface for manually readjusting the correction factors. [Brief explanation of the drawing]

[0043] Further advantages of the present invention will be described in the following exemplary embodiments.

[0044] [Figure 1] Figure 1 is a schematic diagram showing an embodiment of the method of the present invention relating to textile machinery. [Figure 2] Figure 2 is a schematic diagram showing embodiments of the present invention relating to two textile machines. [Figure 3]Figure 3 is a schematic diagram showing an embodiment of the method of the present invention relating to a textile machine having an expert system. [Modes for carrying out the invention]

[0045] In the following descriptions of the drawings, the same reference numeral is used to indicate the same and / or at least equivalent features in different drawings. Individual features, as well as their design and / or function, are typically described in detail only when first mentioned. If an individual feature is not described in further detail, its design and / or function corresponds to the design and function of a feature having the same or identical name functionally described above.

[0046] Figure 1 shows a schematic diagram of a textile machine 1 illustrating the sequence of the method according to the present invention. The textile machine 1 is implemented, for example, as a rotary spinning machine. The machine includes a plurality of workstations 2 that are substantially independent of each other. The textile machine 1 further includes an item management system 3 that provides item-specific operating parameters 5 to the controller 4 of the textile machine 1. The item-specific operating parameters 5 and correction coefficients 6 stored in the textile machine 1 are used, for example, in the controller 4 of the textile machine 1 to calculate operating parameters 7 that are adjusted to the individual conditions of the textile machine 1.

[0047] The item-specific operation parameters 5 of the item management system 3 may be generated, for example, by the manufacturer of the textile machine 1 and made available to the operator. Alternatively, the item-specific operation parameters 5 may be generated by the operator themselves and / or provided only to the textile machine 1 of a specific system.

[0048] Typical operating parameters that may be relevant to the production of a particular yarn in a rotary spinning machine include, in particular, the current and voltage of the electric motor and general control signals, especially those that affect the rotational speed of specific rotating components. For example, the rotational speeds of the opener roller, spinning rotor, and removal roller must be adjusted in this manner.

[0049] The individual conditions of the textile machine 1 compensated by the correction factor 6 include the effects of aging and wear, manufacturing tolerances of the components of the textile machine 1, and characteristics specific to a particular series. For example, the effects of wear can adversely affect the quality of the final product with respect to the opening roller or the fittings of the opening roller. Wear of bearings, belts and / or motors and friction coatings on rollers can have a similar effect. For example, in the case of the central rotor drive of a spinning machine, wear of the rotor belt can also adversely affect the spun yarn. The above effects can be compensated at least partially by the corresponding correction factor 6. For example, manufacturing tolerances include the moment of inertia of an electric motor or slightly different moments of the performance curve. Model-specific characteristics include, in particular, the characteristic values ​​of the mounting components and software of the controller 4 of the textile machine 1.

[0050] The correction factor 6 is stored, for example, in decimal form, and multiplied by the item-specific operating parameter 5. The result of this mathematical operation is the operating parameter 7, which is adjusted to the individual conditions of the textile machine 1.

[0051] The correction factor 6 is initially defined by the user of the textile machine 1 and is preferably stored in the memory of the textile machine 1. The correction factor 6 may be adjusted directly by the user. However, it is also conceivable that the user may set adjusted operating parameters 7 to improve the quality of the products manufactured by the textile machine 1. The textile machine 1 can autonomously derive the correction factor 6 from the item-specific operating parameters 5 and the adjusted operating parameters 7, and optionally store it in the memory of the textile machine 1. To respond to subsequent modifications to the individual conditions of the textile machine 1, for example, the user may readjust the correction factor 6. For example, such a correction factor 6 can be used to automatically track the rotational speed of the rotor drive unit corresponding to wear, where a previously derived correction factor 6 may also be used.

[0052] The schematically illustrated textile machine 1 further includes a partially functional display 8 for displaying item-specific operating parameters 5 along with correction factors 6 and / or adjusted operating parameters 7. The display 8 facilitates the user to arbitrarily readjust the correction factors 6 or adjusted operating parameters 7.

[0053] Figure 2 shows the textile machine 1 of Figure 1, with the difference that the controller 4 of the textile machine 1 is connected to the expert system 9. The expert system 9 includes a database of correction coefficients 6 containing information about the individual conditions of the textile machine 1. From the above data, the expert system 9 can autonomously generate the correction coefficients 6 for the textile machine 1 and / or support the user when readjusting the correction coefficients 6.

[0054] The database of Expert System 9 can be created from the correction coefficients 6 set for the illustrated textile machine 1, and / or the correction coefficients 6 for other textile machines 1. It is conceivable to integrate Expert System 9 into the item management system 3.

[0055] Figure 3 is intended to illustrate the broadest applicability of the item-aware operating parameters 5 of the item management system 3. This schematic diagram shows two textile machines 1 receiving the same item-aware operating parameters 5 from the item management system 3. Despite the potentially significant differences in individual conditions between the two textile machines 1, the same item-aware operating parameters 5 yield substantially identical final products. This is achieved by applying different correction factors 6 to the two textile machines 1. The adjusted operating parameters 7 calculated from the item-aware operating parameters 5 and correction factors 6 compensate for any individual conditions that differ correspondingly between the two textile machines 1 and adversely affect product quality.

[0056] The present invention is not limited to the illustrated and described embodiments. Modifications within the claims are also possible, as they are combinations of features, even if shown and described in different embodiments. [Explanation of Symbols]

[0057] 1. Textile machinery 2 Workstations 3. Item Management System 4 controllers 5-item compatible operating parameters 6. Correction Factor 7 Adjusted operating parameters 8 Display 9 Expert System

Claims

1. A method for operating a textile machine (1), which is a spinning machine, wherein item-specific operation parameters (5) for the textile machine (1) are provided by an item management system (3), The item management system (3) is connected to the controller (4) and user interface of the textile machine (1), and is configured as a database capable of providing the item-specific operation parameters (5) to the textile machine (1), providing the item-specific operation parameters (5) as constant values. Furthermore, a machine-compatible correction coefficient (6) is provided, and the correction coefficient (6) is stored in the memory of the textile machine (1) connected to the controller (4) of the textile machine (1). A method characterized by calculating an operating parameter (7) adjusted to individual conditions of the textile machine (1) from the item-specific operating parameter (5) and the correction coefficient (6) of the controller (4) of the textile machine (1).

2. The method according to claim 1, characterized in that the correction coefficient (6) is arbitrarily readjusted.

3. The method according to any one of claims 1 and 2, characterized in that the correction coefficient (6) is automatically readjusted.

4. The method according to any one of claims 1 to 3, characterized in that the correction coefficient (6) is readjusted based on the power consumption, yarn breakage rate and / or yarn fuzzing of the individual components.

5. The method according to any one of claims 1 to 4, characterized in that the correction coefficient (6) is applied again to the provided item-dependent operating parameter (5) when the batch is changed.

6. The method according to any one of claims 1 to 5, characterized in that the item management system (3) stores a range of values ​​for one or more of the correction coefficients (6).

7. The method according to any one of claims 1 to 6, characterized in that the individual conditions of the textile machine (1) are conditions related to aging and / or manufacturing tolerances and / or assembly tolerances and / or design.

8. The method according to any one of claims 1 to 7, characterized in that the operating parameters (5, 7) include the rotational speed and / or rotational speed ratio and / or switch-on time and / or number of movements of one or more components.

9. The method according to any one of claims 1 to 8, characterized in that the correction coefficient (6) is provided for a single workstation (2) and / or a group of workstations (2) and / or the entire textile machine (1) of the textile machine (1).

10. The method according to any one of claims 1 to 9, characterized in that the provided item-corresponding operating parameters (5) and / or the correction coefficient (6) and / or the adjusted operating parameters (7) are displayed on the display (8) of the textile machine (1).

11. The method according to any one of claims 1 to 10, characterized in that a new item-specific operating parameter (5) is generated, and the correction coefficient (6) is calculated from the current settings and / or adjusted operating parameter (7) of the textile machine (1).

12. The method according to any one of claims 1 to 11, characterized in that the database is part of an expert system (9).

13. A textile machine (1) which is a spinning machine, having a controller (4) and an item management system (3), The item management system (3) is connected to the controller (4) and user interface of the textile machine (1) and is configured as a database capable of providing the item-specific operation parameters (5) to the textile machine (1). The controller (4) is configured to receive the item-specific operation parameters (5) provided as constant values ​​by the item management system (3) and to calculate operation parameters (7) adjusted to the individual conditions of the textile machine (1) from the item-specific operation parameters (5) and machine-specific correction coefficients (6). The textile machine (1) is connected to the controller (4) and has a memory for storing the correction coefficients. A textile machine characterized by the following features.

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