Device for measuring tool or complete tool, and method for compiling digital image of tool or complete tool

Abstract

To provide a device for measuring a tool or complete tool.SOLUTION: The present invention relates to a device for measuring a cutting tool clamped in a tool holder, and in particular, a method for compiling a digital image of the cutting tool clamped in the tool holder by using the device. During the method, the tool or the complete tool is sampled for compiling the digital image. Further, at least one first cutting point, in particular, the first cutting point, for example, a cutting start point and a second cutting point, for example, a cutting end point is measured for the tool or the complete tool. Next, in the digital image, a cutting region is ascertained by using the first cutting point and the second cutting point (a collision-relevant digital twin).SELECTED DRAWING: Figure 1

Description

[Technical field] 【0001】 The present invention relates to an apparatus for measuring a tool, in particular a cutting tool or a complete tool consisting of a tool holder and a tool, in particular a cutting tool clamped in the tool holder, and in particular to a method for compiling a digital image of a tool, in particular a cutting tool or a complete tool consisting of a tool holder and a tool, in particular a cutting tool clamped in the tool holder, by using such an apparatus. [Background technology] 【0002】 It is conventional to measure a complete tool consisting of a tool holder and a tool, e.g. a cutting tool clamped, e.g. compressed, in the tool holder, before coupling to a machine tool configured as a CNC machining machine, by means of an apparatus for measuring a tool, also referred to hereinafter simply as a "presetting device" ("preset", "preset data"), e.g. 【0003】 The dimensions of the tool or complete tool, thus ascertained by the presetting device, are then available to or used in the machine tool for optimisation of the machining of the workpiece on the machine tool. 【0004】 In particular, the presetting ensures that the workpiece machining portion of the tool, e.g. the cutting edge of a cutting tool, has position dimensions that are acceptable for the planned machining of the workpiece on the machine tool. 【0005】 By means of such a presetting device, in this case, in particular the length of the complete tool, the diameter and / or the cutting shape of the clamped tool or cutting tool and, if appropriate, various further ratios of or for the tool or complete tool are measured. 【0006】 If these data are to be directly related to the quality of the workpiece machining in the machine tool, then the tool measurement in the presetting machine must be carried out with high precision. 【0007】 Such measuring devices or such preset instruments are known, for example, from Haimer in the type range "UNO" or in the type range "VIO". 【0008】 It is further known to determine a so-called digital twin, or simply put, a digital image, of a tool or a complete tool from the data determined with a preset device, in order to use this digital twin for preventive collision protection in machine tools. 【0009】 In the scope of this preventive collision protection, in particular, the entire machining operation of the machine tool with the coupled complete tool is at least computationally simulated and checked for possible collisions between the tool or the complete tool and the workpiece or surrounding parts (work table, clamping devices, etc.) (collision monitoring, collision simulation). 【0010】 Now, it is also known that the very high precision required for tool presetting is not necessary for a digital twin that is used for crash protection or for crash simulation. 【0011】 Identifying the digital twin of a tool or a complete tool is described, for example, in (Patent Document 1). [Prior art documents] [Patent documents] 【0012】 [Patent Document 1] European Patent Application Publication No. 3664961A1 Summary of the Invention [Problem to be solved by the invention] 【0013】 The object of the present invention is to improve the presetting devices known from the prior art, in particular to improve and / or simplify the collision check by means of a digital image of a tool or a complete tool. [Means for solving the problem] 【0014】 This object is achieved by an apparatus for measuring a complete tool consisting of a tool holder and a tool clamped in the tool holder, as well as a method for compiling a digital image of a complete tool consisting of a tool holder and a tool clamped in the tool holder, having the features of the respective independent claims. 【0015】 Advantageous developments of the invention are the subject of the dependent claims and the following description and relate both to the device according to the invention and to the method according to the invention. 【0016】 Terms such as "upper", "lower", "front", "rear", "left" or "right" that may be used, unless expressly defined otherwise, should be understood according to conventional understanding and in light of the accompanying drawings. Terms such as "radial" and "axial" that may be used, unless expressly defined otherwise, should be understood with respect to a central axis or axis of symmetry of a component / part described herein and in light of the accompanying drawings. 【0017】 The term "approximately," when used, may be understood (following the Supreme Court's interpretation) to mean "to the extent that it remains significant in practice." This term therefore means that possible deviations from precision may occur unintentionally (i.e., without functional reason) due to manufacturing or installation tolerances, etc. 【0018】 In a method for compiling a digital image of a tool or a complete tool consisting of a tool holder and a tool clamped to the tool holder, the tool or complete tool is sampled for compiling the digital image. 【0019】 In addition to sampling the tool or complete tool, at least one first cutting point, in particular a first cutting point, e.g., a start point of cutting, and a second cutting point, e.g., an end point of cutting, are measured for the tool or complete tool. 【0020】 Optionally, multiple cutting points or cutting areas (for more complex tools) may also be measured or displayed, which may be advantageous, particularly when there are, for example, multiple cutting areas at different heights and / or turning or cutting positions. 【0021】 Measuring only one cutting point, i.e. the first cutting point, may already be sufficient, especially if prior knowledge about the geometry of the cut is available, e.g. by knowing that the cut extends from the first cutting point to the end of the tool. 【0022】 The measurement of at least the first cutting point, or the measurement of the first cutting point and the second cutting point, may be performed in an automated manner by the measuring unit, e.g. by the use of image processing, a feeler, a laser or other measuring means integrated in or cooperating with the measuring unit, and / or by artificial intelligence with the help of self-learning algorithms or optimized manually, e.g. by an operator who determines corresponding points in a metrology program for the measurements. 【0023】 Measuring may also include cutting points that have already been measured and then used in the method, and also means that points of the graphical data set obtained by measuring are purposefully selected and established as cutting points. 【0024】 For the measurement, it may also be advantageous to have available prior knowledge, in particular or, for example, in the proposed form, regarding at least the first cutting point or the first cutting point and the second cutting point, from corresponding data or data sets and / or from a database or programming system, which are then optionally adjusted or adapted and / or aligned, for example with the help of a set value / actual value comparison from the measurement. 【0025】 Thus, in a measurement according to the invention, for example, points suggested by the use of such prior knowledge may therefore be approached (and then measured) automatically. 【0026】 Particularly in the case of complex tools, this can be particularly advantageous when thereby cutting areas at different heights and / or rotational angle positions (of such complex tools) are accessed. 【0027】 Expressed in another way, or more generally, prior knowledge, in particular tool data relating to the cutting points or cutting areas of the tool, e.g., manufacturer's data or normalized data, available, for example, from existing data, may be used to establish and / or check and / or, optionally, adapt one or more measured cutting points. 【0028】 Then, in the digital image, the cutting area is identified by using at least the first cutting point, in particular the first cutting point and the second cutting point ("collision-relevant digital twin" in the case of a machining tool, also "machining-relevant digital twin"). 【0029】 For complex tools which may have multiple cutting zones, at least one first cutting point, in particular the first cutting point and the second cutting point, are measured separately for each cutting zone and each cutting zone is then identified. 【0030】 The present invention therefore makes it possible to quickly arrive at a collision-relevant twin in the fastest possible way from a generic digital twin, and further identifies a machining-relevant twin which may be immediately used in the programming system. 【0031】 In particular, the additional measurements and the use of the measurements have the further advantage, for example, of a completely pure (automated / autonomous) image quality assessment of the digital image, whereby uncertainties in the automatic image quality assessment or its logic are avoided by the additional measurements, thereby making the accuracy and / or reliability of the identified cutting area higher. 【0032】 In a variant, it may also be provided that at least the first cutting point or the first and the second cutting point or a number of cutting points have already been identified by sampling or during sampling, for example in an automated manner from the sampling points or digital images, in which case the measurement of the cutting point or points as an additional step may not be necessary. 【0033】 "Digital image" may mean a two-dimensional image or a three-dimensional image, for example a contour profile or an enclosing contour. 【0034】 In this case, "sampled" may mean, in particular, that images of different areas of the object, here a tool or complete tool, are taken, e.g. in a transmitted light method, e.g. by a light measurement or metrology unit / device, in particular as used in preset equipment, and evaluated to generate a digital image and / or a collision-related twin. 【0035】 Depending on how it is performed, the sampling may result in a two-dimensional or even a three-dimensional digital image, for example by rotating the object during sampling, resulting in a three-dimensional image. 【0036】 Alternatively, the three-dimensional image may also be mathematically generated or calculated from the two-dimensional images. For example, the above-mentioned rotation of the object may be mathematically "simulated" to produce a three-dimensional image from two-dimensional images. 【0037】 "Different regions" may mean the tool at different heights and / or in different rotated views. 【0038】 In particular, the contour or contour profile or enclosing contour of the object, for example here of a tool or a complete tool, may be ascertained by such sampling. 【0039】 A "contour" or "contour profile" is intended to be understood in particular as the maximum extent of any cross-sectional area along the axis of rotation of the tool or complete tool. A contour or contour profile is particularly suitable to make it possible to calculate in advance a collision with a workpiece in a machining process (collision simulation / observation). The same applies analogously to a surrounding contour, which can be understood as a three-dimensional contour or contour profile. 【0040】 In this case, the invention is based on the discovery that the cutting area of ​​the tool or cutting tool, which can be used for any collision monitoring, must be identified and distinguished from the entire contour, since the cutting area of ​​the tool must be able to enter the workpiece to be machined without a collision, whereas the cutting area must be taken into account for collision monitoring against machine elements, for example a chuck for clamping the workpiece. 【0041】 In this respect, the present invention distinguishes between "normal" digital twins and crash-related or machining-related digital twins. 【0042】 In this case, a "machining-relevant twin" may be understood as having, in addition to the information items assigned to the collision-relevant twin, further information items and / or these own information items, preferentially and further conformally or in a manner compatible with CAD / CAM systems and / or processing systems, and / or a specific structure or processing, for example in a layer structure and / or by marking, in particular color marking. 【0043】 The present invention therefore determines this distinct cutting area by measuring at least one first cutting point, or optionally a first cutting point and a second cutting point, e.g. a cutting start point and a cutting end point, of a tool or a complete tool during collision observation in a simplified but still sufficiently accurate manner. 【0044】 "Measurement" in this context may also mean that data can be generated at this point with a high degree of accuracy, and measurements may be available with a higher degree of accuracy than other forms of confirmation or establishment (e.g., by a corresponding high-resolution metrology system). 【0045】 In contrast to the prior art, this is not done theoretically in a CAD / CAM programming environment that is removed from the actual manufacturing environment, where different models are merely combined, but in practice, for convenience, directly in manufacturing or in tool presetting, on the actual tool or on the complete tool (after installation). 【0046】 In this way, interface problems, faulty and incomplete data sets and / or tool drawings or models, and / or faulty feedback loops to the actual tool are avoided. 【0047】 Furthermore, specific experience values ​​such as length tolerances, neck clearances and / or chip recesses after regrind may be taken into account by manual determination or measurement in the department or in the manual determination or measurement. 【0048】 At least the first cutting point, optionally the first cutting point and the second cutting point, or the cutting start point and the cutting end point, may then define a cutting area, which may then be taken into account in a digital image of the tool or the complete tool (collision-related or machining-related digital twin). 【0049】 Furthermore, the present invention provides the advantage that the method forms an integrated process or an integrated (overall) method, which can be further incorporated or integrated into the overall flow of an (existing) process, e.g. tool measurement in a pre-setting device, in particular integrated into a measurement unit or a metrology system therein. 【0050】 Where previously, for a digital image of a tool or a complete tool, data, e.g. (CAD / CAM) data of the tool, (CAD / CAM) data of the tool holder and possibly also individual (CAD / CAM) data of the cutting, etc., had to be combined from various data sources (from different processes) to form a general (overall) data structure (layer structure according to DIN) (i.e., to express by way of example, the digital image had to be "assembled" from data of such various data sources), so that interface problems were virtually unavoidable, in particular due to, e.g., incompatible or non-conformal reference points and difficult feedback chains since they are repeated, the present invention makes it possible to generate (integrated, compatible) data from one data source and use them for the collision-relevant digital twin as an integratable or integrated method representing the entire flow. 【0051】 Thus, data compatibility and data interchangeability, as well as data generated and available in one "place" or from one source that corresponds to real measured values, ensures high efficiency and effectiveness, simplicity, and low error susceptibility in the present invention or method. 【0052】 In short and simply stated, interface problems and data compatibility problems, or in general problems related to data integration, can be avoided by the present invention. 【0053】 Thus, in particular when the method is integrated with tool measurement (of a presetting device), in which in addition to the digital image or the collision-relevant digital twin according to the invention also regular presetting data are generated and measured, by combining two data sets of conformal data coming from one data source, an integrated and comprehensively functional data set, in particular in a (digital) data format, may become available, for example to a machine tool or a programming station (for presetting and collision observation). 【0054】 In this case, it is particularly advantageous to make the digital images and / or the crash-relevant digital twin available in the form of data or in the form of a dataset in a digital data format, for example in the data formats VDA-FS, IFC, IGES, STEP (ISO standard 10303), STL or DXF. 【0055】 For example, it may be further advantageous to generate an image file in data format JPEG, Windows Bitmap, or Graphics Interchange Format showing the entire portion and / or one or more sections of the tool or the complete tool and / or the digital image and / or the crash-relevant digital twin. 【0056】 Furthermore, it may be advantageous to provide an interface for transmitting data or data sets generated during the method by way of a data connection and / or for writing said data or data sets to a storage medium. 【0057】 A "storage medium" is intended in particular to be understood as a data carrier used in data processing, such as a flash memory, a USB memory, a floppy disk or a hard disk. A "data connection" is intended in particular to be understood as a wired and / or wireless data connection, in particular a wireless data connection. 【0058】 Via the data connection, data or a data set may be transmitted to a device or equipment, for example a machine tool, in particular by means of a protocol. 【0059】 Furthermore, the method also offers the advantage that, as has been discovered, the very high precision required for tool presetting is not necessary for a digital twin used for crash protection or for crash simulation. 【0060】 It is therefore advantageous to perform discrete "only" sampling of the tool or complete tool at various (predeterminable) tool or complete tool heights (and, optionally, various rotational positions therein) and then review the digital images. 【0061】 By suitable mathematical methods, for example by interpolation between the ascertained and therefore numerically definable sampling data, a 2D and / or 3D model (or a 2D and / or 3D contour model) of the tool or complete tool may then be calculated from the sampling data as a digital image of the tool or complete tool. 【0062】 A "crash-free" cutting area is then defined in the digital image for the crash-related twin. 【0063】 If low accuracy requirements are imposed on a digital twin used for crash protection or crash simulation, i.e., in this case, a crash-related digital twin, by specifying a limited number of sampling heights for convenience, the amount of data reviewed may be limited, computing time and memory space may be saved, and the crash simulation may be performed without loss of reliability. 【0064】 It is further advantageous that during the determination of the cutting area, by using at least the first cutting point, optionally the first cutting point and the second cutting point, this point or one or more points closest to these points are determined in the digital image of the tool or complete tool, and by using this closest point / these closest points the cutting area is defined or confirmed, in particular can be marked in the digital image. 【0065】 In simple terms, by using one or more “re-measured” cutting points, one or more corresponding points are searched for in the digital image, for example by “minimum distance”, and thus the “one or more image points” thus found may define the cutting area in the digital image as one or more digital image points. 【0066】 In this case, it also proves advantageous that, on the one hand, the digital image or the collision-related digital twin is subject to somewhat lower accuracy requirements, while, on the other hand, one or more image points are ascertained only from one or more measured cutting points, so that high accuracy does not have to be imposed on the re-measurement of at least one cutting point, or, optionally, two cutting points. 【0067】 Furthermore, it may also be provided that a scan, for example a 2D or 3D scan, of the tool or the complete tool is performed during sampling. 【0068】 It may also be advantageous to perform scanning or sampling with a different measurement system, such as, for example, a laser-assisted or ultrasound-assisted system, or an optical and / or tactile system. 【0069】 During a 2D scan, it is advantageous to measure the contours on both sides of the tool or complete tool at a predefined fixed position of the tool or complete tool, so that during the measurement the tool or complete tool remains unrotated and therefore the 2D contour can be ascertained. 【0070】 In this case, it may be provided here in particular that during sampling, a 2D scan of the tool or of the complete tool is performed, when the tool is a non-rotating tool, for example a lathe chisel. 【0071】 During sampling it may also be provided that a 3D scan of the tool or the complete tool is performed. 【0072】 During the 3D scan it is expedient that the contour of one side of the tool or complete tool is measured, the tool or complete tool being rotated during the measurement so that the surrounding contour can be ascertained. 【0073】 In this case, it may be provided here that during sampling, in particular when the tool is a rotating tool, for example a milling tool, a 3D scan of the tool or of the complete tool is performed. 【0074】 In this case, a rotating tool may mean that such a tool rotates while processing a workpiece, and a non-rotating tool may mean that such a tool does not rotate while processing a workpiece. 【0075】 "One-sided" or "both sides" may mean that the contour is determined on only one side (possibly up to the central axis, the axis of symmetry) or on both sides of a two-dimensionally imaged tool or complete tool. 【0076】 Sampling according to the present invention may also be performed by stitching methods (image linking) for the compilation of a digital twin. 【0077】 In this case, individual images of the tool or complete tool, or of parts of the tool or complete tool, may be generated, optionally at high resolution (i.e., in this case only relevant areas such as edges are stitched together), which are combined ("stitched") to form a global image of the tool or the entire tool (whereas in scanning, the rows are placed next to each other). Such a global image may be a digital twin or may be used to compile a digital twin. 【0078】 Stitching may be performed, for example, with transmitted light methods as well as with reflected light methods and / or other image processing methods, which allow, for example, measurements regarding the surface / surface structure that cannot be made available with transmitted light methods. 【0079】 During such stitching, the coordinates of the individual images may also be fixed so as to ascertain the positions and / or coordinates of the image points with the aid of the overall image. Expressed in another way or as an example, this "reading" of the image points from the overall image may also be considered as a measurement of the points and may therefore be applied to the cutting points. Thus, in general, it is also possible to retrospectively determine or measure the visible elements on the overall image. 【0080】 When data of the digital image of the tool holder is otherwise available, in particular when it has already been saved and / or loaded, it may be advantageous if only sampling of the tool is performed for the complete tool in order to compile a digital image of the complete tool. 【0081】 Expressed in another way, for example, if there is prior knowledge in this regard, e.g. from the manufacturer and / or standardization and norms (DIN / ISO), regarding the tool holder and / or tool interfaces, and / or if geometrical information items such as length and / or diameter are available (possibly read via a (defined) interface), sampling may optionally be limited to only the "missing" areas of the tool or complete tool. 【0082】 Thus, sampling and prior knowledge may be combined for or in a digital image, which saves processing time and / or processing capacity. In this way, situations that have a detrimental effect on sampling, such as dirt on the tool or complete tool, can also be eliminated. 【0083】 It is furthermore advantageous that at least one data set, in particular a plurality of data sets, in particular a data set having data of the digital image and having data for the identified cutting area and / or a data set having data of the digital image and having data for the identified cutting area and measurement data of the tool, from measurements by using the device according to the invention for measuring a tool or a complete tool, are generated during the compilation of the digital image of the tool or complete tool. 【0084】 It is particularly advantageous if the tool or the complete tool is measured, in particular by using a device according to the invention for measuring a tool or a complete tool. 【0085】 It is thus provided here that the tool or the complete tool is measured as usual, in particular by using the device according to the invention. 【0086】 As a development, it may then be possible for a crash inspection to be carried out by using the digital images or the crash-related digital twin identified by the present invention. 【0087】 It is particularly advantageous that, for example, by marking the (cutting) start and / or end points together with measurements of the cutting area, a file with the required color labelling and / or layer structure according to ISO may be compiled, and the use of conventional programming systems may be carried out in an automated manner and (in the ideal case) without additional reprocessing (machining-related digital twin). 【0088】 Alternatively, or more simply and generally, the cutting information determined by the present invention may also be made available in other ways or to other systems, such as machining and / or programming systems (e.g., CAD / CAM systems), for example in the form of layers and / or layer structures or other digital markings. 【0089】 It will generally also be advantageous for the data generated by the present invention to be made available for other systems (e.g. CAD / CAM systems) in a normalized or standardized form, e.g. in a layered structure, for example and for convenience by means of DXF and / or step files. 【0090】 It may also be particularly advantageous for the data (or data sets) generated according to the invention for a tool or a complete tool to be assigned an identification, for example in the form of an ID number, which is at the same time specific for the tool or complete tool covered by the invention. The data thus designated may then be further used in processing programs, (inventory) management systems, etc. for the tool or complete tool. 【0091】 Furthermore, it may be advantageous for the method according to the invention to be carried out with a cutting tool and / or with the cutting tool compressed in a tool holder. 【0092】 An apparatus for measuring a tool or a complete tool consisting of a tool holder and a tool clamped in the tool holder provides a measuring unit and a calculation and control unit. 【0093】 The measuring unit and the calculation and control unit are adapted such that for compiling a digital image of the tool or complete tool, the tool or complete tool is sampled, and in addition to sampling the tool or complete tool, at least one first cutting point, in particular the first cutting point, e.g. the cutting start point, and a second cutting point, e.g. the cutting end point, are measured for the tool or complete tool, and the cutting area is marked in the digital image by using at least the first cutting point, in particular the first cutting point and the second cutting point. 【0094】 Therefore, in particular the measurement unit and / or the calculation and control unit is adapted to carry out the above-mentioned method according to the invention or one of the method steps according to the invention. 【0095】 In this case, the "... units", such as the measurement unit and the calculation and control unit, may in particular comprise a processor, a memory unit, an interface and / or also operating, control and calculation programs, in particular stored in the memory unit. 【0096】 Simply and by way of example, it is particularly advantageous to carry out the method according to the invention and / or even the method steps according to the invention, such as sampling and / or "re-measuring" one or more cutting points, by using the device according to the invention. 【0097】 In this case it proves to be particularly advantageous for conventional preset devices, which are already known per se, to be supplemented with the functions according to the invention (of the device and / or method). 【0098】 Conventional preset equipment may remain largely unchanged in terms of hardware and / or control, on which basis the capture according to the invention only extends to software proves to be particularly advantageous in this case: new or adapted program modules can ensure this. 【0099】 Optionally, for the execution of the above-mentioned method according to the invention or one of the method steps according to the invention, the measuring unit and / or the device according to the invention may have a control unit which ensures a corresponding drive of the measuring unit in order to execute the above-mentioned method according to the invention or one of the method steps according to the invention. 【0100】 The (tool) presetting device provides the above-mentioned device according to the invention for measuring a tool or a complete tool. 【0101】 The machining centre provides the above-mentioned device according to the invention for measuring a tool or a complete tool, in particular a (tool) presetting device according to the invention, as well as a machine tool. 【0102】 In particular, it is advantageous in this case for the device and the machine tool to be mounted on a common base and / or for the device to be integrated (functionally and / or as a component) into the machine tool. 【0103】 The above-provided description of advantageous configurations of the present invention includes a number of features that are sometimes duplicated for multiple combinations in the individual dependent claims, however these features may also be considered individually for convenience and may be combined to form further suitable combinations, including between arrangements / apparatus and methods. 【0104】 Although certain terms may be used in the specification or claims in the singular or in combination with numerals, the scope of the invention is not intended to be limited to the singular form or respective numerals of these terms. Furthermore, the words "a" or "an" should be understood as indefinite articles and not as numerals. 【0105】 The above-mentioned characteristics, features, and advantages of the present invention, as well as the manner in which they are realized, will become more apparent and more clearly understood with the following description of exemplary embodiments of the present invention, which are described in more detail in conjunction with the drawings / figures (wherein the same components / components and functions have the same reference numerals in the drawings / figures). 【0106】 The exemplary embodiments are used to explain the invention and do not limit the invention to the feature combinations or functional features set forth therein. Furthermore, preferred features of any exemplary embodiment may be expressly considered in isolation, separated from the exemplary embodiment, introduced into another exemplary embodiment to complement the other exemplary embodiment, and / or combined with any of the claims. [Brief description of the drawings] 【0107】 [Figure 1] 1 illustrates a schematic diagram of a process for machining a workpiece by using a presetting device according to an embodiment of the present invention. [Diagram 2] 2 shows a detailed view of the preset device of FIG. 1. [Diagram 3] 13A-13C are screenshots showing the sampling of a complete tool, here a turning tool clamped in a tool holder, during a 2D scan according to an embodiment of the invention. [Figure 4] 1 shows a screenshot of a measurement of a first cutting point of a tool, here a turning tool clamped in a tool holder, according to an embodiment of the invention. [Diagram 5]1 shows a screenshot of a measurement of a second cutting point of a tool, here a turning tool clamped in a tool holder, according to an embodiment according to the invention. [Figure 6] 13A-13C are screenshots showing the sampling of a complete tool, here a milling tool clamped in a tool holder, during a 3D scan according to an embodiment of the present invention. [Figure 7] 1 shows a screenshot of a measurement of a first cutting point of a tool, here a milling tool clamped in a tool holder, according to an embodiment according to the invention. [Figure 8] 1 shows a screenshot of a measurement of a second cutting point of a tool, here a milling tool clamped in a tool holder, according to an embodiment according to the invention. [Figure 9] 1 illustrates a crash-relevant digital twin according to an embodiment of the present invention. [Figure 10a] 13 shows a stitched transmitted light image of a tool according to an embodiment of the present invention. [Figure 10b] 13 shows a stitched image of a tool using a reflected light method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 【0108】 Figure "Machining of the workpiece" (Fig. 1) FIG. 1 illustrates the machining of a workpiece 32 by a machine tool 26, here the milling of a workpiece 32 being milled by a CNC machine tool / machine tool 26. 【0109】 As shown in FIG. 1, the machining comprises a CNC machine tool 26 on which a workpiece 32 is machined or milled by means of a (milling) tool 4 (collectively referred to as a complete tool 6) clamped in a tool holder 8, here a (hydraulic expansion) chuck 8. 【0110】 Before the workpiece 32 is machined, a simulated collision inspection for machining is performed for or on the machine tool 26 . 【0111】 As an alternative to performing the collision check on the machine tool, the check may also be performed on a separate programming workstation as well. 【0112】 For this purpose, as also shown in FIG. 1, a presetting device 2 is provided, which generates the data required for presetting (presetting data) as well as the data required for collision inspection (crash-related digital twin 20, see FIG. 9), which data are transmitted (from the presetting device 2) to the machine tool 26 in the form of multiple data sets, as indicated by the arrows in FIG. 1. 【0113】 Preset device 2 (Figure 2) FIG. 2 shows in detail a tool presetting device, abbreviated as presetting device 2 , for measuring a tool 4 or a complete tool 6 . 【0114】 The preset equipment 2 comprises a light measurement device 10 in the form of a camera device 10 by means of which items of information may be obtained from the tool 4 or the complete tool 6 . 【0115】 The preset device 2 further comprises a calculation and control unit 34, which in particular comprises a processor, a memory unit, an interface to a camera device, an interface 36 to the machine tool and calculation and operating programs stored in the memory unit, and for example the measurement of the tool 4 and the generation of data for the collision-related digital twin 20 of the tool 4 or the complete tool 6 are executable by the calculation and control unit 34 and are "operable" by means of the display means 38 and the input means 40. 【0116】 The calculation and control unit 34 is therefore intended, by means of corresponding calculation and operating programs, for performing conventional measurements of the tool 4 or the complete tool 6 using the camera device 10 or for performing conventional measurements of the tool 4 or the complete tool 6, and for preset data to be generated by the tool 4 or the complete tool 6. 【0117】 Furthermore, the calculation and control unit 34, likewise by means of corresponding calculation and operating programs and by using the camera device 10, makes it possible to generate data of the tool 4 or of the complete tool 6 for crash inspection, i.e. the crash-related digital twin 20. 【0118】 The preset data and / or the crash-related digital twin 20 may be provided in the form of one or more data sets in a digital format for further machining, for example, in data formats VDA-FS, IFC, IGES, STEP, STL, and DXF. 【0119】 In this case, separate data sets of pre-set data and crash-related digital twin 20 are provided, and furthermore a general data set comprises both sets of data. 【0120】 Via an interface 36 to the machine tool 26, the data or data set may be sent / communicated to the machine tool 26 (which is capable of performing the simulated crash test or by which the simulated crash test is performed). 【0121】 Furthermore, the preset device 2 comprises, as shown in Fig. 2, a display means 38 in the form of a monitor 38 and an input means 40 configured as a keyboard 40. Alternatively, the input means 40 may also be configured as a touch screen functional monitor 38. 【0122】 The operator can run the calculation and operating programs via the keyboard 40, functions that cause data and status indications of the calculation and operating programs to be displayed on the monitor 38, and initiate the sending of data or data sets to the machine tool 26 via the interface 36. 【0123】 2, the complete tool 6 is arranged on a spindle 42 which is rotatably mounted about a rotation axis 46, actuable both manually by an operator 44 and by an actuator (not shown in detail) which can be actuated manually by the operator 44 and in an automated manner by a computing and control unit. 【0124】 The above-mentioned camera arrangement 10 of the presetting apparatus 2 is configured as a transmitted light system, in which a camera 48 and an illumination means 50 are on either side of the complete tool 6 arranged on a spindle 42. The camera arrangement 10 is mounted on a carriage 52 and is displaceable along two axes. 【0125】 An interface for a printer 54 is also available. 【0126】 Figures 3-5 and 6-8 show the generation of data for a crash-relevant digital twin 20, referred to simply as compiling the crash-relevant digital twin 20, using different types of tools 4, one a non-rotating tool 4 and the other a rotating tool 4, respectively, whereby a simulated crash inspection is then performed (see Figure 9, an illustration of the crash-relevant digital twin 20). 【0127】 Compilation of a collision-relevant digital twin for a non-rotating tool (Figures 3-5) Here, during generation of a collision-relevant digital twin 20 of a complete tool 6 of a non-rotating tool 4, for example a turning tool 4, the turning tool 4 is sampled 100, thereby compiling a (two-dimensional) digital image 18 of the complete tool. 【0128】 Sampling 100 is performed at a predetermined fixed position (fixed spindle 42) of the complete tool 6, in which case the non-rotating tool 4 of the complete tool 6 is performed with the camera device 10 by 2D scanning and the contours 28 on both sides of the complete tool 6 are measured. 【0129】 In this case, the camera device 10 approaches various heights of the complete tool 6 in an automated manner and performs acquisitions of the complete tool 6 or sections 56 of the complete tool 6, respectively, at these heights, from which the contour 28 or contour profile 28 of the complete tool 6 is then "extracted" and a (two-dimensional) digital image 18 is then formed. 【0130】 This is done by first moving the camera device 10 stepwise from below, i.e. from the lower end of the complete tool 6, upwards, i.e. towards the upper end of the complete tool 6, in which case the camera device 10 focuses on the contour 28 of one side of the complete tool 6, in which case the contour 28 of one side of the complete tool 6 can be determined. 【0131】 The camera device 10 then moves stepwise from the top downwards, in which case the camera device 10 focuses on the contour 28 of the other side of the complete tool 6, in which case the contour 28 of the other side of the complete tool 6 can be determined. 【0132】 In addition to sampling 100 the complete tool, the first cutting point 12, i.e. the cutting start point 12, and the second cutting point 14, i.e. the cutting end point 14, are then measured 102, 104 in sequence by the camera device 10 with respect to the tool 4 or the complete tool 6. 【0133】 For this purpose, the operator 44 moves the camera device 10 to two corresponding heights, which can be controlled respectively by the display 58 on the monitor 38, where he can focus on the cutting start point 12 or the cutting end point 14 and then trigger the respective measurement 102, 104 by means of the keyboard 40. 【0134】 The cutting area 16 is then identified 106 in the digital image 18 by using the measured first cutting point 12 and the measured second cutting point 14, or using these identified closest points 22, 24 in the digital image 18 (the "crash-relevant digital twin" 20). 【0135】 Compilation of a collision-relevant digital twin 20 for a rotating tool 4 (Figures 6-8) Here, during generation of a collision-relevant digital twin 20 of a complete tool 6 of a rotating tool 4, for example a milling tool 4, the milling tool 4 is similarly sampled 100 and in this case a (three-dimensional) digital image 18 of the complete tool 6 of the rotating tool 4 is compiled. 【0136】 Sampling 100 is performed with the complete tool 6 (rotating spindle 42) rotated differently, in this case the rotating tool 4 of the complete tool 6 is performed with the camera device 10 by 3D scanning and the contour 28 of one side of the complete tool is measured. 【0137】 In this case, the camera device 10 approaches various heights of the complete tool 6 in an automated manner and performs acquisitions of the complete tool 6 or sections 56 of the complete tool 6 at each of these heights and at positions of the complete tool which are rotated differently (by the spindle 42), from which acquisitions the surrounding contour 30 of the complete tool 6 is then "extracted" and a three-dimensional digital image 18 is then formed. 【0138】 This is done by moving the camera device 10 stepwise from below, i.e. from the lower end of the complete tool 6, upwards, i.e. towards the upper end of the complete tool 6, whereby the camera device 10 focuses on the contour 28 on one side of the complete tool 6. At the approached heights and at the differently rotated complete tool positions, various captures of the complete tool 6 are respectively made. 【0139】 In addition to sampling 100 the complete tool 6 , the first cutting point 12 , i.e. the cutting start point 12 , and the second cutting point 14 , i.e. the cutting end point 14 , are then measured 102 , 104 in sequence by the camera device 10 with respect to the tool 4 or the complete tool 6 . 【0140】 For this purpose, the operator 44 moves the camera device 10 to two corresponding heights, which can be controlled respectively by the display 58 on the monitor 38, where he can focus on the cutting start point 12 or the cutting end point 14 and then trigger the respective measurement 102, 104 by means of the keyboard 40. 【0141】 Then, in the digital image 18, the cutting area 16 is identified 106 by using the measured first cutting point 12 and the measured second cutting point 14, or using these identified closest points 22, 24 in the digital image 18 (the "crash-relevant digital twin" 20). 【0142】 Crash-related Digital Twin 20 (Figure 9) Figure 9 shows a collision-relevant digital twin 20 of the complete tool 6, represented from the step data generated by the preset equipment 2 (see section "Compiling a collision-relevant digital twin 20 for a rotary tool 4 (Figures 6-8)"). 【0143】 Thus, FIG. 9 shows a digital image 18 (three-dimensional model) of a tool holder 8 with a clamped tool 4, here similar to the (hydraulic extended) chuck 8 with the clamped milling tool 4 of FIG. 1, in which the cutting area 16 according to the invention of the tool is determined 106 (and, for illustrative purposes, marked in color). 【0144】 Based on these data, the machine tool 26 and / or an external programming station then performs a crash simulation. 【0145】 “Spliced” images of Tool 4 (Fig. 10a and b) Figures 10a and b show images 18 of the spliced ​​tool 4 in transmitted and reflected light methods, respectively. 【0146】 In this image, the cutting area 16 may then be identified by using at least the first cutting point 12, or the first cutting point 12 and the second cutting point 14, thus generating a “collision-related” or “machining-related digital twin” 20. 【0147】 Although the invention has been illustrated and described by means of preferred exemplary embodiments, the invention is not limited to the disclosed examples, and other variations may be derived therefrom without departing from the protective scope of the invention. [Explanation of symbols] 【0148】 List of References 2 Apparatus for measuring tools or complete tools, presetting equipment 4 (rotating / non-rotating) tools, turning tools, milling tools 6 Complete Tools 8 Tool holder, (hydraulic expansion) chuck 10 Measuring units, (optical) measuring devices, camera units 12 First cutting point, starting point of cutting 14 Second cutting point, end of cutting 16 Cutting area 18 Digital Images 20 Crash-related Digital Twin 22 The closest point to the first cutting point in the digital image 24 The closest point to the second cutting point in the digital image 26 Machine tools, CNC machine tools, CNC processing machines 28 Contour, Contour Profile 30 Enclosing Contour 32 Workpieces 34 Calculation and Control Unit 36 Interface to machine tools 38 Display means, monitor 40 Input means, keyboard 42 Spindle 44 Operator 46 Rotational Axis 48 Camera 50 Lighting means 52 shuttle 54 Printer 56 Section 58 Display 100 Sampling 102 Measurement of the first cutting point or starting point of cutting 104 Measurement of second cutting point or end of cutting point 106 Checking the cutting area

Claims

[Claim 1] A device for measuring a complete tool consisting of a tool or tool holder and a tool clamped in the tool holder, The measurement unit and the calculation and control unit are For the compilation of a digital image of the tool or the complete tool, the tool or the complete tool is sampled, and in addition to the sampling of the tool or the complete tool, at least one first cutting point, in particular the first cutting point, e.g., the cutting start point, and a second cutting point, e.g., the cutting end point, is measured for the tool or the complete tool, and the cutting area is confirmed in the digital image by using at least the first cutting point, in particular the first cutting point and the second cutting point ("collision-related digital twin"). It is characterized by being adapted in such a way, In particular, the measuring unit is adapted to perform the method described in any one of claims 5 to 16. Characterized by, Device. [Claim 2] A device for measuring a complete tool consisting of a tool or tool holder and a tool clamped in the tool holder, The measurement unit and the calculation and control unit are further adapted to compile a machining-related twin having additional information items and / or unique information items for a particular structure or process, in addition to the information items assigned to the collision-related twin, by using a digital image or a collision-related digital twin. Characterized by, Device. [Claim 3] The apparatus for measuring a complete tool comprising a tool or tool holder and a tool clamped to the tool holder, according to claim 1 or 2, (Tools) Preset equipment. [Claim 4] An apparatus for measuring a complete tool comprising a tool or tool holder and a tool clamped to the tool holder, as described in claim 1 or 2, particularly the (tool) preset device as described in claim 3, and a machine tool, wherein the apparatus and the machine tool are mounted on a common base and / or the apparatus is integrated with the machine tool. Processing center. [Claim 5] In particular, a method for compiling a digital image of a complete tool consisting of a tool or a tool holder and a tool clamped to a tool holder, using the apparatus described in claim 1 or 2, For the compilation of the digital image, the tool or the complete tool is sampled, in particular by using the apparatus for measuring the tool or the complete tool; in addition to the sampling of the tool or the complete tool, at least one first cutting point, in particular the first cutting point, e.g., the cutting start point, and a second cutting point, e.g., the cutting end point, are measured for the tool or the complete tool, in particular by using the apparatus for measuring the tool or the complete tool; and the cutting area is identified in the digital image by using at least the first cutting point, in particular the first cutting point and the second cutting point ("collision-related digital twin"). Characterized by, method. [Claim 6] The sampling of the tool or the complete tool is performed at different tool or complete tool heights, and the digital image is confirmed from the sampling. Characterized by, A method for compiling the digital image described in claim 5. [Claim 7] During the determination of the cutting area, by using at least the first cutting point, particularly the first and second cutting points, one or more points closest to these points are determined in the digital image of the tool or the complete tool. By using this nearest point or the closest points thereto, the cutting area can be identified and, in particular, marked in the digital image. Characterized by, A method for compiling the digital image described in claim 5. [Claim 8] During the sampling, in particular, a 2D scan of the tool or the complete tool is performed by using the apparatus for measuring the tool or the complete tool, and during the 2D scan, the contours of both sides of the tool or the complete tool are measured at predetermined fixed positions. Characterized by, A method for compiling the digital image described in claim 5. [Claim 9] During the sampling, in particular, by using the apparatus for measuring the tool or complete tool, a 3D scan of the tool or complete tool is performed, during the 3D scan the contour of one side of the tool or complete tool is measured, and the tool or complete tool rotates during the measurement, and the surrounding contour is confirmed. Characterized by, A method for compiling the digital image described in claim 5. [Claim 10] During the sampling, if the tool is a rotation tool, a 3D scan of the tool or the complete tool is performed. Characterized by, A method for compiling the digital image described in claim 5. [Claim 11] When the data of the digital image in the tool holder is available by another means, in particular when it has already been saved and / or loaded, only the sampling of the tool is performed for the compilation of the digital image of the complete tool. Characterized by, A method for compiling the digital image described in claim 5. [Claim 12] During the compilation of the digital image of the tool or the complete tool, at least one dataset, in particular multiple datasets, in particular a dataset having the digital image data and the data for the confirmed cutting area, and / or a dataset having the digital image data and the data for the confirmed cutting area, as well as the measurement data of the tool, is generated. Characterized by, A method for compiling the digital image described in claim 5. [Claim 13] In particular, the tool or the complete tool is measured by using the apparatus for measuring the tool or the complete tool. Characterized by, A method for compiling the digital image described in claim 5. [Claim 14] The crash inspection is performed using the digital image or the crash-related digital twin. Characterized by, A method for compiling the digital image described in claim 5. [Claim 15] By using the aforementioned digital image or collision-related digital twin, a machining-related twin is compiled that has additional information items and / or unique information items for a particular structure or process, in addition to the information items assigned to the collision-related twin. Characterized by, A method for compiling the digital image described in claim 5. [Claim 16] Performed with a cutting tool and / or with a cutting tool compressed in the tool holder, A method for compiling the digital image described in claim 5.

Images