OPTICAL MEASURING AND/OR PRESETTING METHOD AND OPTICAL TOOL PRESETTING AND/OR TOOL MEASURING APPARATUS

Abstract

An optical measuring and/or presetting method for a combined measuring and/or presetting of a set of profile machining tools comprises a plurality of individual profile machining tools is proposed, wherein the individual profile machining tools of the set of profile machining tools are configured for a successive machining of side edges of stone slabs, with at least one tool presetting and/or tool measuring apparatus, by means of which in at least one first tool measuring step an at least partly and/or at least section-wise concave-curved work contour, in particular milling contour or polishing contour, of a first profile machining tool of the set of profile machining tools is optically captured in an at least semi-automated manner, wherein in a first tool presetting step profile coordinates are assigned to the work contour of the first profile machining tool captured in the first tool measuring step, said profile coordinates being stored in a memory unit of the tool presetting and/or tool measuring apparatus

Claims

1. An optical measuring and/or presetting method for a combined measuring and/or presetting of a set of profile machining tools comprising a plurality of individual profile machining tools in particular a plurality of profile milling tools and/or profile polishing tools, preferably a plurality of profiling wheels and/or profiling polishing wheels, wherein the individual profile machining tools of the set of profile machining tools configured for a successive machining of side edges stone slabs, with at least one tool presetting and/or tool measuring apparatus, by means of which in at least one first tool measuring step at least partly and/or at least section-wise concave-curved work contour in particular milling contour or polishing contour, of a first profile machining tool of the set of profile machining tools optically captured in an at least semi-automated manner, wherein in a first tool presetting step profile coordinates are assigned to the work contour of the first profile machining tool captured in the first tool measuring step, said profile coordinates being stored in a memory unit of the tool presetting and/or tool measuring apparatus.

2. The measuring and/or presetting method according to claim 1, wherein in at least one second tool measuring step at least partly and/or at least section-wise concave work contour, in particular milling contour or polishing contour, of a second profile machining tool of the set of profile machining tools is optically captured in an at least semi-automated manner, wherein in at least one second tool presetting step the profile coordinates the second profile machining tool determined in the second tool measuring step are aligned with the profile coordinates of the first profile machining tool which were previously determined in the first tool measuring step.

3. The measuring and/or presetting method according to claim 2, wherein in the second tool presetting step the profile coordinates of the work contour the first profile machining tool are inputted as reference coordinates for a relative positioning of profile coordinates of the captured work contour of the second profile machining tool, and are stored in the memory unit of the tool presetting and/or tool measuring apparatus.

4. The measuring and/or presetting method according to claim 3, comprising at least a plurality of, in particular at least five, further tool measuring steps, in which at least partly concave and/or at least section-wise concave work contours, in particular milling contours or polishing contours, of a plurality of further profile machining tools in particular at least five further profile machining tools, of the set of profile machining tools are optically captured in an at least semi-automated manner, wherein in each of the further tool measuring steps the profile coordinates of the further profile machining tools determined therein are, in each case in at least one allocated further tool presetting step, aligned with the profile coordinates of one of the previously measured further profile machining tools which were determined in the preceding tool measuring step.

5. The measuring and/or presetting method according to claim 1, wherein in the combined measuring and/or presetting of the plurality of individual profile machining tools of the set of profile machining tools, in at least one tool measuring step a profile milling tool, in particular a profiling wheel, is optically measured, and in at least one tool measuring step, which follows said tool measuring step, a profile polishing tool, in particular a profile polishing wheel, is optically measured.

6. The measuring and/or presetting method according to wherein in the combined measuring and/or presetting of the plurality of individual profile machining tools of the set of profile machining tools, in at least one tool measuring step, a profile milling tool, in particular a profiling wheel, is optically measured, and in at least one tool measuring step, which follows said tool measuring step, a profile polishing tool, in particular a profile polishing wheel, is optically measured and that in a tool presetting step, which follows the tool measuring step in which the profile polishing tool was measured and which is allocated to the profile polishing tool measured in the tool measuring step, the determined profile coordinates of the profile polishing tool are aligned with the profile coordinates of the first profile machining tool embodied as a profile milling tool, which were previously determined in the first tool measuring step.

7. The measuring and/or presetting method according to claim 1, wherein at least a plurality of the profile machining tools which are to be measured, of the set of profile machining tools are profile milling tools, in particular profiling wheels, wherein in the first tool measuring step of the combined measuring and/or presetting of the plurality of individual profile machining tools of the set of profile machining tool, which is executed on a profile milling tool, the profile milling tool of the set of profile machining tools which has the least coarse machining surface measured, and that the profile milling tools that are to be measured in the following tool measuring steps are sorted in ascending order by a coarseness of the machining surfaces of the profile milling tools.

8. The measuring and/or presetting method according to claim 1, wherein at least a plurality of the profile machining tools which are to be measured, of the set of profile machining tools, are profile polishing tools, in particular profile polishing wheels, and wherein at least a plurality of the profile machining tools which are to be measured, of the set of profile machining tools, are profile milling tools in particular profiling wheels, wherein first at least one of the profile milling tools of the set of profile machining tools is measured and/or preset before one or several profile polishing tool/s of the set of profile machining tools is/are measured and/or preset.

9. The measuring and/or presetting method according to claim 1, wherein at least a plurality of the profile machining tools which are to be measured, of the set of profile machining tools, are profile polishing tools, in particular profile polishing wheels, wherein the profile coordinates determined in tool measuring steps on profile polishing tools of the set of profile machining tools are in each case aligned with the determined profile coordinates the profile milling tool the set of profile machining tools which has the finest machining surface.

10. The measuring and/or presetting method according to claim 1, wherein the profile coordinates stored in the tool presetting steps are overlaid with coordinates of a side edge of a stone slab, which is to be machined.

11. The measuring and/or presetting method according to claim 10, wherein the profile coordinates of the individual profile machining tools of the set of profile machining tools, which were determined in the tool measuring steps, are overlaid as precisely as possible in the tool presetting steps.

12. The measuring and/or presetting method according to claim 10, the profile coordinates of the individual profile machining tools the set of profile machining tools which were determined in the tool measuring steps are overlaid with an offset in the tool presetting steps.

13. The measuring and/or presetting method according to claim 12, wherein the offset induces a displacement of the profile coordinates in a direction that is parallel to a main extension plane of the stone slab which is to be machined.

14. The measuring and/or presetting method according to claim 12, wherein an offset assigned to at least one of the profile machining tools, which are embodied as profile milling tools, of the set of machining tools is adjusted relative to the determined profile coordinates of the profile milling tool of the set of profile machining tools, which was measured previously.

15. The measuring and/or presetting method according to claim 12, wherein an offset assigned to at least one of the profile machining tools which are embodied as profile milling tools of the set of profile machining tools corresponds to a given ideal stock removal value of this profile milling tool.

16. The measuring and/or presetting method according to claim 12, wherein an offset assigned to at least one of the profile machining tools of the set of profile machining tools is adjusted relative to the determined profile coordinates of the previously measured profile milling tool of the set of profile machining tools, which has the finest machining surface of all profile milling tools of the set of profile machining tools (18).

17. The measuring and/or presetting method according to claim 16, wherein an offset assigned to at least one of the profile machining tools, which are embodied as profile milling tools, of the set of machining tools is adjusted relative to the determined profile coordinates of the profile milling tool of the set of profile machining tools, which was measured previously, and that at least one offset assigned to a profile milling tool in a tool presetting step a direction that is opposed to an offset assigned to a profile polishing tool in a further tool presetting step.

18. The measuring and/or presetting method according to claim 1, wherein at least one output step the determined and respectively aligned profile coordinates are transmitted to a machine tool in a machine-readable form.

19. The measuring and/or presetting method according to claim 18, wherein the profile coordinates of the individual profile machining tools of the set of profile machining tools, which were determined in the tool measuring steps are overlaid with an offset in the tool presetting steps, and that an offset assigned to at least one of the profile milling tools of the set of profile machining tools causes a dataset with a virtually enlarged profile milling tool being transmitted to the machine tool.

20. The measuring and/or presetting method according to claim 18, wherein an offset assigned to at least one of the profile machining tools of the set of profile machining tools is adjusted relative to the determined profile coordinates of the previously measured profile milling tool of the set of profile machining tools, which has the finest machining surface of the profile milling tools of the set of profile machining tools and that an offset assigned to at least one of the profile polishing tools of the set of profile machining tools causes a dataset with a virtually downscaled profile polishing tool being transmitted to the machine tool.

21. The measuring and/or wherein at least the profile coordinates stored in the first tool presetting step are automatically aligned relative to the stone slab that is to be machined.

22. The measuring and/or presetting method according to claim 21, wherein for the alignment of the profile coordinates relative to the stone slab a point of the work contour of the profile machining tool measured in the first tool measuring step is identified, in which the work contour takes on a maximum curvature radius.

23. An optical tool presetting and/or tool measuring apparatus for an execution of the optical measuring and/or presetting method according to claim 1.

Description

DRAWINGS

[0033] Further advantages will become apparent from the following description of the drawings. In the drawings an exemplary embodiment of the invention is illustrated.

[0034] The drawings, the description and the claims contain a plurality of features in combination. Someone skilled in the art will purposefully also consider the features individually and will find further expedient combinations.

[0035] It is shown in:

[0036] FIG. 1 a schematic illustration of a tool presetting and/or tool measuring apparatus communicating with a machine tool,

[0037] FIG. 2 a schematic illustration of a set of profile machining tools in a holding device,

[0038] FIG. 3a a schematic side view of a profile milling tool of the set of profile machining tools,

[0039] FIG. 3b a schematic side view of a profile polishing tool of the set of profile machining tools,

[0040] FIG. 4a a schematic sectional view of a stone slab with a first edge shape,

[0041] FIG. 4b a schematic sectional view of an exemplary stone slab with a second edge shape,

[0042] FIG. 4c a schematic sectional view of an exemplary stone slab with a third edge shape,

[0043] FIG. 4d a schematic sectional view of an exemplary stone slab with a fourth edge shape,

[0044] FIG. 4e a schematic sectional view of an exemplary stone slab with a fifth edge shape,

[0045] FIG. 4f a schematic sectional view of an exemplary stone slab with a sixth edge shape,

[0046] FIG. 5 a schematic flow chart of an optical measuring and/or presetting method,

[0047] FIG. 6a a schematic representation of measured profile coordinates of the profile machining tools with a first offset,

[0048] FIG. 6b a schematic representation of measured profile coordinates of the profile machining tools with a second offset, and

[0049] FIG. 6c a schematic representation of measured profile coordinates of the profile machining tools with a third offset.

DESCRIPTION OF THE EXEMPLARY EMBODIMENT

[0050] FIG. 1 shows an optical tool presetting and/or tool measuring apparatus 24. The tool presetting and/or tool measuring apparatus 24 is configured for an execution of the optical measuring and/or presetting method that is described here. The tool presetting and/or tool measuring apparatus 24 is configured for an optical measuring of tools. The tool presetting and/or tool measuring apparatus 24 is configured for a presetting of tools. The tool presetting and/or tool measuring apparatus 24 comprises an optical measuring device 76 with a camera 78 and a lighting 80. In the case shown by way of example, the optical measuring device 76 implements a transmitted-light measuring arrangement. Alternatively it is however also conceivable that the optical measuring device 76 implements an incident-light measuring arrangement. The tool presetting and/or tool measuring apparatus 24 comprises a rotatable spindle unit 96, which forms a tool receiving region 98 for receiving the tool that is to be measured or a tool chuck with the tool that is to be measured. The tool presetting and/or tool measuring apparatus 24 comprises a control and/or regulation unit 90. The control and/or regulation unit 90 comprises a processor 92 and a memory unit 32 with a storage medium. The control and/or regulation unit 90 is configured for controlling and/or regulating the tool presetting and/or tool measuring apparatus 24, in particular the execution of the optical measuring and/or presetting method by the tool presetting and/or tool measuring apparatus 24. In the present case the tool presetting and/or tool measuring apparatus 24 is configured specifically for a combined optical measuring and presetting of a plurality of individual profile machining tools 10, 12, 48, 50, 52, 54, 56. FIG. 1 further shows an exemplary machine tool 74. The machine tool 74 is configured for a machining of a stone slab 22 by means of profile machining tools 10, 12, 48, 50, 52, 54, 56.

[0051] In FIG. 2 seven profile machining tools 10, 12, 48, 50, 52, 54, 56, which are fixated in a holding device 88, are shown by way of example. The seven profile machining tools 10, 12, 48, 50, 52, 54, 56 form a set of profile machining tools 18. The individual profile machining tools 10, 12, 48, 50, 52, 54, 56 of the set of profile machining tools 18 are configured for a successive machining of side edges 20 of stone slabs 22 (see also FIGS. 4a to 4f). The set of profile machining tools 18 forms a unit of profile machining tools 10, 12, 48, 50, 52, 54, 56 which belong together and which are necessary to create a defined side edge shape of the stone slab 22.

[0052] In the illustrated example, the set of profile machining tools 18 comprises four profile machining tools 10, 12, 48, 50 which are embodied as profile milling tools 14, in particular as profiling wheels. The first profile machining tool 10 is embodied as a profile milling tool 14, in particular a profiling wheel. The second profile machining tool 12 is embodied as a profile milling tool 14, in particular a profiling wheel. The third profile machining tool 48 is embodied as a profile milling tool 14, in particular a profiling wheel. The fourth profile machining tool 50 is embodied as a profile milling tool 14, in particular a profiling wheel. The four profile machining tools 10, 12, 48, 50 embodied as profile milling tools 14 respectively have machining surfaces 84 of different coarseness. The first profile machining tool 10 embodied as a profile milling tool 14 has the finest machining surface 84, in particular the machining surface 84 with the finest grit, of all profile machining tools 10, 12, 48. 50 embodied as profile milling tools 14. The second profile machining tool 12 embodied as a profile milling tool 14 has the second-finest machining surface 84, in particular the machining surface 84 with the second-finest grit, of all profile machining tools 10, 12, 48, 50 embodied as profile milling tools 14. The third profile machining tool 48 embodied as a profile milling tool 14 has the third-finest machining surface 84, in particular the machining surface 84 with the third-finest grit, of all profile machining tools 10, 12, 48, 50 embodied as profile milling tools 14. The fourth profile machining tool 50 embodied as a milling tool 14 has the coarsest machining surface 84, in particular the machining surface 84 with the coarsest grit, of all profile machining tools 10, 12, 48, 50 embodied as profile milling tools 14. The machining surface 84 is arranged on a radial outer circumference of the profile machining tools 10, 12, 48, 50 embodied as profile milling tools 14. For a machining of the stone slab 22 the profile machining tool 10, 12, 48, 50 embodied as a profile milling tool 14 is rotated and is brought into contact with the side edge 20 of the stone slab 22 with its radial outer circumference, i. e. in particular with its machining surface 84.

[0053] In the illustrated example the set of profile machining tools 18 comprises three profile machining tools 52, 54, 56 which are embodied as profile polishing tools 16, in particular as profile polishing wheels. The fifth profile machining tool 52 is embodied as a profile polishing tool 16, in particular a profile polishing wheel. The sixth profile machining tool 54 is embodied as a profile polishing tool 16, in particular a profile polishing wheel. The seventh profile machining tool 56 is embodied as a profile polishing tool 16, in particular a profile polishing wheel. The three profile machining tools 52, 54, 56 embodied as profile polishing tools 16 respectively have polishing surfaces 82 of differing hardness. The first profile machining tool 52 embodied as a profile polishing tool 16 has the softest polishing surface 82, in particular the polishing surface 82 with the softest rubber material, of all profile machining tools 52, 54, 56 embodied as profile polishing tools 16. The second profile machining tool 54 embodied as a profile polishing tool 16 has the second-softest polishing surface 82, in particular the polishing surface 82 with the second-softest rubber material, of all profile machining tools 52, 54, 56 embodied as profile polishing tools 16. The third profile machining tool 56 embodied as a profile polishing tool 16 has the hardest polishing surface 82, in particular the polishing surface 82 with the hardest rubber material, of all profile machining tools 52, 54, 56 embodied as profile polishing tools 16. The polishing surface 82 is arranged on a radial outer circumference of the profile machining tools 52, 54, 56 embodied as profile polishing tools 16. For a machining of the stone slab 22 the profile machining tool 52, 54, 56 embodied as a profile polishing tool 16 is rotated and is brought into contact with the side edge 20 of the stone slab 22 with its radial outer circumference, i.e. in particular with the polishing surface 82.

[0054] All profile machining tools 10, 12, 48, 50, 52, 54, 56, in particular all profile milling tools 14 and all profile polishing tools 16, have an at least substantially identical work contour 28, in particular milling contour of the machining surface 84 (see FIG. 3a) or polishing contour of the polishing surface 82 (see FIG. 3b). The work contour 28 of the profile machining tools 10, 12, 48, 50, 52, 54, 56 is partly concave-curved. The work contour 28 of the profile machining tools 10, 12, 48, 50, 52, 54, 56 is section-wise concave-curved. The work contour 28 of the profile machining tools 10, 12, 48, 50, 52, 54, 56 emulates a desired edge shape 86 of the stone slab 22 that is to be machined. The profile machining tools 10, 12, 48, 50, 52, 54, 56 are realized substantially rotationally symmetrically around a rotation axis 122. The profile machining tools 10, 12, 48, 50, 52, 54, 56 are configured, for a machining of the stone slab 22, to be rotated around the rotation axis 122 (see also FIGS. 3a and 3b).

[0055] FIGS. 4a to 4f show different exemplary edge shapes 86. 86′, 86″, 86′″, 86′″ 86′″″ of side edges 20 of stone slabs 22. The edge shape 86 shown in FIG. 4a corresponds to the outer shape of the side edge 20 of the stone slab 22 that can be generated by the set of profile machining tools 18 shown exemplarily in FIG. 2. The edge shape 86 shown in FIG. 4a is rounded on an upper side. The edge shapes 86′, 86″, 86′″, 86″″, 86′″″ shown in FIGS. 4b to 4f in each case require sets of differently shaped profile machining tools. In the edge shape 86′ shown in FIG. 4b the upper and the lower edge are rounded. In FIG. 4c a so-called “bullnose” edge shape is illustrated, In FIG. 4d a so-called “ogee” edge shape is illustrated. In FIG. 4e a combination of the “ogee” edge shape (above) and the “bullnose” edge shape (below) is illustrated. In FIG. 4f a three-fold curved or so-called “triple pencil” edge shape is illustrated.

[0056] FIG. 5 shows a flow chart of the optical measuring and/or presetting method for the combined measuring and/or presetting of the set of profile machining tools 18 comprising the plurality of individual profile machining tools 10, 12, 48, 50, 52, 54, 56. The method steps 26, 30, 34, 36, 38, 40, 42, 44, 46, 58, 60, 62, 64, 66, 72, 94, 100, 104, 106, 108, 110, 112, 114, 116 of the measuring and/or presetting method are carried out by means of the tool presetting and/or tool measuring apparatus 24.

[0057] In a method step 94 the first profile machining tool 10 of the set of profile machining tools 18 is inserted into the spindle unit 96 of the tool presetting and/or tool measuring apparatus 24. In a first tool measuring step 26 the work contour 28 of the first profile machining tool 10 of the set of profile machining tools 18 is optically captured and/or measured by the tool presetting and/or tool measuring apparatus 24. In a first tool presetting step 30 profile coordinates 102 are assigned to the work contour 28 of the first profile machining tool 10 captured in the first tool measuring step 26 (see also FIGS. 6a to 6c). In the first tool presetting step 30 the assigned profile coordinates 102 are stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. The profile coordinates 102 stored in the first tool presetting step 30 are automatically aligned relative to a position of the stone slab 22 that is to be machined. This may be effected either already on the tool presetting and/or tool measuring apparatus 24 or later on, after transmission to the machine tool 74, on the machine tool 74 itself. In the first tool measuring step 26 the profile milling tool 14 of the set of profile machining tools 18 is measured which has the least coarse machining surface 84, in particular the finest grit. Tool measuring steps 34, 38, 40 following the first tool measuring step 26, in which profile milling tools 14 are measured, are sorted temporally in ascending order of coarseness of the machining surface 84 of the profile milling tools 14. However, different temporal sortings and/or sequences of further tool measuring steps 34, 38, 40, 42, 44, 46 following the first tool measuring step 26 are also conceivable. In any case one of the profile milling tools 14 of the set of profile machining tools 18 is measured and/or preset before one or several profile milling tool/s 16 of the set of profile machining tools 18 is/are measured and/or preset. In a further method step 100 the first profile machining tool 10 is removed out of the spindle unit 96 and the second profile machining tool 12 of the set of profile machining tools 18 is inserted into the spindle unit 96.

[0058] In a second tool measuring step 34, which in particular takes place temporally after the first tool measuring step 26, the work contour 28 of the second profile machining tool 12 of the set of profile machining tools 18 is captured and/or measured. In a second tool presetting step 36 profile coordinates 102 are assigned to the work contour 28 of the second profile machining tool 12 captured in the second tool measuring step 34. The profile coordinates 102 of the second profile machining tool 12, which were determined in the second tool measuring step 34, are in the second tool presetting step 36 aligned with the profile coordinates 102 of the first profile machining tool 10, which were previously determined in the first tool measuring step 26. In the second tool presetting step 36 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of profile coordinates 102 of the captured and/or measured work contour 28 of the second profile machining tool 12. In the second tool presetting step 36 the assigned profile coordinates 102 are stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. In a further method step 104 the second profile machining tool 12 is removed out of the spindle unit 96 and the third profile machining tool 48 of the set of profile machining tools 18 is inserted into the spindle unit 96.

[0059] In a third tool measuring step 38, which in particular takes place temporally after the second tool measuring step 34, the work contour 28 of the third profile machining tool 48 of the set of profile machining tools 18 is captured and/or measured. In a third tool presetting step 58 profile coordinates 102 are assigned to the work contour 28 of the third profile machining tool 48 captured in the third tool measuring step 38. In the third tool presetting step 58 the profile coordinates 102 of the third profile machining tool 48, which were determined in the third tool measuring step 38 are aligned with the profile coordinates 102 of the first profile machining tool 10 which were previously determined in the first tool measuring step 26. In the third tool presetting step 58 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of profile coordinates 102 of the captured and/or measured work contour 28 of the third profile machining tool 48. The assigned profile coordinates 102 are in the third tool presetting step 58 stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. In a further method step 106 the third profile machining tool 48 is removed out of the spindle unit 96 and the fourth profile machining tool 50 of the set of profile machining tools 18 is inserted into the spindle unit 96.

[0060] In a fourth tool measuring step 40, which in particular takes place temporally after the third tool measuring step 38, the work contour 28 of the fourth profile machining tool 50 of the set of profile machining tools 18 is captured and/or measured. In a fourth tool presetting step 60 profile coordinates 102 are assigned to the work contour 28 of the fourth profile machining tool 50 captured in the fourth tool measuring step 40. In the fourth tool presetting step 60 the profile coordinates 102 of the fourth profile machining tool 50, which were determined in the fourth tool measuring step 40, are aligned with the profile coordinates 102 of the first profile machining tool 10, which were previously determined in the first tool measuring step 26. In the fourth tool presetting step 60 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of profile coordinates 102 of the captured and/or measured work contour 28 of the fourth profile machining tool 50. The assigned profile coordinates 102 are in the fourth tool presetting step 60 stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. In a further method step 108 the fourth profile machining tool 50 is removed out of the spindle unit 96 and the fifth profile machining tool 52 of the set of profile machining tools 18 is inserted into the spindle unit 96.

[0061] In a fifth tool measuring step 42, which in particular takes place temporally after the fourth tool measuring step 40, the work contour 28 of the fifth profile machining tool 52 of the set of profile machining tools 18 is captured and/or measured. In a fifth tool presetting step 62 profile coordinates 102 are assigned to the work contour 28 of the fifth profile machining tool 52 captured in the fifth tool measuring step 42. The profile coordinates 102 of the fifth profile machining tool 52, which were determined in the fifth tool measuring step 42, are in the fifth tool presetting step 62 aligned with the profile coordinates 102 of the first profile machining tool 10, which were previously determined in the first tool measuring step 26. In the fifth tool presetting step 62 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of profile coordinates 102 of the captured and/or measured work contour 28 of the fifth profile machining tool 52. The assigned profile coordinates 102 are in the fifth tool presetting step 62 stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. In a further method step 110 the fifth profile machining tool 52 is removed out of the spindle unit 96 and the sixth profile machining tool 54 of the set of profile machining tools 18 is inserted into the spindle unit 96.

[0062] In a sixth tool measuring step 44, which in particular takes place temporally after the fifth tool measuring step 42, the work contour 28 of the sixth profile machining tool 54 of the set of profile machining tools 18 is captured and/or measured. In a sixth tool presetting step 64 profile coordinates 102 are assigned to the work contour 28 of the sixth profile machining tool 54, which was captured in the sixth tool measuring step 44. In the sixth tool presetting step 64 the profile coordinates 102 of the sixth profile machining tool 54 determined in the sixth tool measuring step 44 are aligned with the profile coordinates 102 of the first profile machining tool 10, which were previously determined in the first tool measuring step 26. In the sixth tool presetting step 64 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of the profile coordinates 102 of the captured and/or measured work contour 28 of the sixth profile machining tool 54. The assigned profile coordinates 102 are in the sixth tool presetting step 64 stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24. In a further method step 112 the sixth profile machining tool 54 is removed out of the spindle unit 96 and the seventh profile machining tool 56 of the set of profile machining tools 18 is inserted into the spindle unit 96,

[0063] In a seventh tool measuring step 46, which in particular takes place temporally after the sixth tool measuring step 44, the work contour 28 of the seventh profile machining tool 56 of the set of profile machining tools 18 is captured and/or measured. In a seventh tool presetting step 66 profile coordinates 102 are assigned to the work contour 28 of the seventh profile machining tool 56 captured in the seventh tool measuring step 46. In the seventh tool presetting step 66 the profile coordinates 102 of the seventh profile machining tool 56, which were captured in the seventh tool measuring step 46, are aligned with the profile coordinates 102 of the first profile machining tool 10, which were previously determined in the first tool measuring step 26. In the seventh tool presetting step 66 the profile coordinates 102 of the work contour 28 of the first profile machining tool 10 are inputted as reference coordinates for a relative positioning of profile coordinates 102 of the captured and/or measured work contour 28 of the seventh profile machining tool 56. The assigned profile coordinates 102 are in the seventh tool presetting step 66 stored in the memory unit 32 of the tool presetting and/or tool measuring apparatus 24, The profile coordinates 102 stored in the tool presetting steps 30, 36, 58, 60, 62, 64, 66 are overlaid with coordinates of the side edge 20 of the stone slab 22, which is to be machined (see also FIGS. 6a to 6c).

[0064] In the combined measuring and/or presetting of the plurality of individual profile machining tools 10, 12, 48, 50, 52, 54, 56 of the set of profile machining tools 18, in the fourth tool measuring step 40 a profile milling tool 14, in particular a profiling wheel, is optically measured, and in the fifth tool measuring step 42, which follows said fourth tool measuring step 40, a profile polishing tool 16, in particular a profile polishing wheel, is optically measured. In the tool presetting step 62, which follows the fifth tool measuring step 42 in which the profile polishing tool 16 was measured, and which belongs to the profile polishing tool 16 measured in the tool measuring step 42, the determined profile coordinates 102′'' of the profile polishing tool 16 are aligned with the profile coordinates 102 of the first profile machining tool 10 embodied as a profile milling tool 14, which were previously determined in the first tool measuring step 26 (see also FIG. 6c).

[0065] In at least one further method step 114 the profile coordinates 102, determined in the tool measuring steps 26, 34, 38, 40, 42, 44, 46, of the individual profile machining tools 10, 12, 48, 50, 52, 54, 56 of the set of profile machining tools 18, which were stored in the tool presetting steps 30, 36, 58, 60, 62, 64, 66, are overlaid relative to one another as precisely as possible. In this case the machine tool 74 realizes, in a following machining of the stone slab 22, the monitoring of the stock removal effected by each profile milling tool 14 of the set of profile machining tools 18 and/or the monitoring of the polishing pressure exerted by each profile polishing tool 16 of the set of profile machining tools 18.

[0066] In at least one further method step 116 (which is an alternative to the method step 114) the profile coordinates 102 of the individual profile machining tools 10, 12, 48, 50, 52, 54, 56 of the set of profile machining tools 18, which were determined in the tool measuring steps 26, 34, 38, 40, 42, 44, 46 and which were stored in the tool presetting steps 30, 36, 58, 60, 62, 64, 66, are overlaid with an offset 68 (see also FIGS. 6a to 6c), wherein the offset 68 indicates a relative displacement of the profile coordinates 102 stored in the respective tool presetting steps 30, 36, 58, 60, 62, 64, 66 with respect to the profile coordinates 102 of the profile machining tool 12, 48, 50, 52, 54, 56 which were measured before, in particular directly before, or wherein the offset 68 indicates a relative displacement of the profile coordinates 102 stored in the respective tool presetting steps 30, 36, 58, 60, 62, 64, 66 with respect to the profile coordinates 102 of the first profile machining tool 10. Preferably, in the second to seventh tool presetting steps 36, 58, 60, 62, 64, 66 in each case the offset 68 is calculated directly and/or is applied to the respectively newly stored profile coordinates 102. Alternatively the offset 68 could also be applied to the stored profile coordinates 102 no earlier than after an execution of all tool measuring steps 26, 34, 38, 40, 42, 44, 46.

[0067] In at least one output step 72 the determined and respectively aligned profile coordinates 102 are transmitted to the machine tool 74 in a machine-readable form. An offset 68 assigned to one of the profile milling tools 14 of the set of profile machining tools 18 herein causes a dataset of the profiling milling tools 14 transmitted to the machine tool 74 comprising a virtually enlarged profile milling tool 14. In this way it is advantageously achievable that, with identical machine tool settings, the different profile milling tools 14 are automatically moved not fully up to the desired edge end position but each leave a material rest behind, which is then partly or completely removed by the following profile milling tool 14 of the set of profile machining tools 18. Only the dataset of the final (finest) profile milling tool 14 is free of an offset and hence travels up to the desired edge position, thus leaving no material protruding beyond the desired edge position. An offset 68 assigned to one of the profile polishing tools 16 of the set of profile machining tools 18 herein causes a dataset of the profile polishing tool 16 that is transmitted to the machine tool 74 comprising a virtually downscaled profile polishing tool 16. In this way it is advantageously achievable that, with identical machine tool settings, the different profile polishing tools 16 automatically exert polishing pressures of differing intensities. In at least one further method step 120 the stone slab 22 is successively machined by the profile machining tools 10, 12, 48, 50, 52, 54, 56. Herein one of the two following machining sequences is followed: Either: fourth profile machining tool 50, third profile machining tool 48, second profile machining tool 12, first profile machining tool 10, fifth profile machining tool 52, sixth profile machining tool 54, seventh profile machining tool 56; or: fourth profile machining tool 50, third profile machining tool 48, second profile machining tool 12, first profile machining tool 10, seventh profile machining tool 56, sixth profile machining tool 54, fifth profile machining tool 52. A set of profile machining tools 18 may also comprise any number of profile machining tools that differs from one and from seven.

[0068] FIGS. 6a to 6c in each case exemplarily show profile coordinates 102, 102′, 102″, 102′″ of profile machining tools 10, 12, 48, 50 identified on the basis of determined work contours 28. The profile coordinates 102, 102′, 102″, 102′″ are in each case overlaid with a contour, respectively with coordinates, of the stone slab 22 that is to be machined. The profile coordinates 102, 102′, 102″, 102.sup.−are in each case automatically aligned relative to the stone slab 22 that is to be machined, in particular to the coordinates of the stone slab 22 that is to be machined. For the alignment of the profile coordinates 102, 102′, 102″, 102′″ relative to the stone slab 22, in each case a point of the work contour 28 of the profile machining tool 10, which was measured in the first tool measuring step 26, is determined in which the work contour 28 takes on a maximum curvature radius. In this way it is advantageously achievable that in a machining of the stone slab 22 by successive profile machining tools 10, 12, 48, 50, 52, 54, 56, the at least partly and/or at least section-wise concave work contours 28 are aligned relative to one another as precisely as possible (i. e. that they are superimposed to one another, except for the offset 86).

[0069] The profile coordinates 102 of the first profile machining tool 10, i. e. of the profile milling tool 14 with the finest grit, which is shown in all three FIGS. 6a to 6c, indicate the desired edge position. In FIG. 6a furthermore the profile coordinates 102′ (displaced by the offset 68) of the second profile milling tool 12, i. e. of the profile milling tool 14 with the second-finest grit, are shown. The setoff between the profile coordinates 102 of the first profile machining tool 10 and the profile coordinates 102′ of the second profile machining tool 12 is given by the offset 68. The offset 68 causes a displacement of the profile coordinates 102′ in a direction that is parallel to a main extension plane 70 of the stone slab 22 that is to be machined.

[0070] In the case shown in FIG. 6a the offset 68 of a profile milling tool 14 is shown. The offset 68 assigned to a profile machining tool 12, 48, 50, embodied as a profile milling tool 14, of the set of profile machining tools 18 corresponds to a given (for example by the manufacturer) ideal stock removal value of this profile machining tool 12, 48, 50, in particular this profile milling tool 14. Ideal stock removal values of profile milling tools 14 are generally between 0.5 mm and 2 mm, preferably approximately 1 mm. The profile coordinates 102′ of the second profile machining tool 12 are thus (virtually) displaced by an amount that corresponds to the ideal stock removal value of the second profile machining tool 12. This is in particular equivalent to a virtual enlargement of the second profile machining tool 12, i. e. an increment of the measuring values of the second profile machining tool 12 by the offset 68 in the direction of the main extension plane 70 of the stone slab 22, respectively in an x-coordinate direction 118. The difference between the profile coordinates 102, 102′ of the first profile machining tool 10 and the second profile machining tool 12 thus approximately corresponds to a material region of the stone slab 22 which has been left over after machining of the stone slab 22 with the second profile machining tool 12 (and before that with the third and fourth profile machining tools 48, 50) and which must still be removed by the first profile machining tool 10.

[0071] In the case shown in FIG. 6b the offset 68 of another profile machining tool 14 of the set of profile machining tools 18, more precisely of the third profile machining tool 48, is shown. The profile coordinates 102″ of the third profile machining tool 48 are (virtually) displaced by an amount of a sum of the ideal stock removal value of the second profile machining tool 12 and the ideal stock removal value of the third profile machining tool 48. This is in particular equivalent to a virtual enlargement of the third profile machining tool 48 in the x-coordinate direction 118, which even exceeds the virtual enlargement of the second profile machining tool 12. The difference between the profile coordinates 102′, 102″ of the second profile machining tool 12 and the third profile machining tool 48 thus approximately corresponds to a material region of the stone slab 22 that has been left over after machining the stone slab 22 with the third profile machining tool 48 (and before that with the fourth profile machining tool 50) and which must still be removed by the first profile machining tool 10 and by the second profile machining tool 12.

[0072] In the case shown in FIG. 6c the offset 68 of a profile polishing tool 16 of the set of profile machining tools 18, more precisely of the fifth profile machining tool 51, is shown. The offset 68 assigned to a profile polishing tool 16 has a direction that is opposed to a direction of the offset 68 assigned to a profile milling tool 14. The profile coordinates 102′″ of the fifth profile machining tool 52 are (virtually) displaced counter to the x-coordinate direction 118. This is in particular equivalent to a virtual downscaling of the fifth profile machining tool 52 in the x-coordinate direction 118. This virtual downscaling results in a pressing of the profile polishing tool 16 to the stone slab 22. The difference between the profile coordinates 102, 102′″ of the first profile machining tool 12 and the fifth profile machining tool 52 thus approximately corresponds to a compression which a polishing material of the profile polishing tool 16 is subjected to by the pressing to the stone slab 22.

REFERENCE NUMERALS

[0073] 10 first profile machining tool

[0074] 12 second profile machining tool

[0075] 14 profile milling tool

[0076] 16 profile polishing tool

[0077] 18 set of profile machining tools

[0078] 20 side edge

[0079] 22 stone slab

[0080] 24 tool presetting and/or tool measuring apparatus

[0081] 26 first tool measuring step

[0082] 28 work contour

[0083] 30 first tool presetting step

[0084] 32 memory unit

[0085] 34 second tool measuring step

[0086] 36 second tool presetting step

[0087] 38 third tool measuring step

[0088] 40 fourth tool measuring step

[0089] 42 fifth tool measuring step

[0090] 44 sixth tool measuring step

[0091] 46 seventh tool measuring step

[0092] 48 third profile machining tool

[0093] 50 fourth profile machining tool

[0094] 52 fifth profile machining tool

[0095] 54 sixth profile machining tool

[0096] 56 seventh profile machining tool

[0097] 58 third tool presetting step

[0098] 60 fourth tool presetting step

[0099] 62 fifth tool presetting step

[0100] 64 sixth tool presetting step

[0101] 66 seventh tool presetting step

[0102] 68 offset

[0103] 70 main extension plane

[0104] 72 output step

[0105] 74 machine tool

[0106] 76 optical measuring device

[0107] 78 camera

[0108] 80 lighting

[0109] 82 polishing surface

[0110] 84 machining surface

[0111] 86 edge shape

[0112] 88 holding device

[0113] 90 control and/or regulation unit

[0114] 92 processor

[0115] 94 method step

[0116] 96 spindle unit

[0117] 98 tool receiving region

[0118] 100 method step

[0119] 102 profile coordinates

[0120] 104 method step

[0121] 106 method step

[0122] 108 method step

[0123] 110 method step

[0124] 112 method step

[0125] 114 method step

[0126] 116 method step

[0127] 118 x-coordinate direction

[0128] 120 method step

[0129] 122 rotation axis