Machine tool and method for operating such machine tool
By designing a machine tool with the first and second rotary gantry in the machine tool, the design of the workpiece table interference area reduces the spacing between the rotary gantry and the working spindle, the problems of long downtime and large space requirements of the existing machine tool are solved, and more efficient workpiece processing is achieved.
Patent Information
- Application Number
- CN202411692339.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-27
- Filing Date
- 2024-11-25
- Publication Date
- 2025-05-27
AI Technical Summary
When the working spindle stops running, the workpiece table loading and unloading leads to a higher downtime, and the distance between the rotating pedestal and the working spindle is large, resulting in an increase in machine tool space demand.
By designing a machine tool with a first and a second rotary gantry, including a first and a second workpiece gantry, respectively, the spacing of the working spindle relative to the axis of the rotary gantry is reduced. The workpiece table interference area of the first rotating pedestal projection extends outwardly from the rotation area to the axis of the rotating pedestal to reduce the size of the rotation area and ensure the proximity of the workpiece table to the working spindle.
It is realized that the spacing between the rotating pedestal and the working spindle is reduced while maintaining the same or improved machining time, thereby reducing the space requirements and downtime of the machine tool and improving the machining efficiency of the workpiece.
Smart Images
Figure CN120038573A_ABST
Abstract
Description
Field of the Invention
[0001] The present invention relates to a machine tool having a machine frame, having at least one first working spindle, having at least one second working spindle, having at least one first rotary table associated with the first working spindle, which is rotatably supported in the machine frame about a first rotary table axis and which includes at least one first workpiece table and at least one second workpiece table, wherein the first workpiece table and the second workpiece table are arranged at the first rotary table on opposite sides of the first rotary table with respect to the first rotary table axis and define respective interference regions in which these workpiece tables can be arranged or are arranged, and having at least one second rotary table associated with the second working spindle, which is rotatably supported in the machine frame about a second rotary table axis extending parallel to and spaced from the first rotary table axis and which includes at least one first workpiece table and at least one second workpiece table, these workpiece tables being arranged at the second rotary table on opposite sides of the second rotary table with respect to the second rotary table axis and defining respective interference regions in which these workpiece tables can be arranged or are arranged, wherein the first rotary table and the second rotary table can be correspondingly transferred from a first rotary position (in which each first workpiece table is arranged in the working area and the first or second working spindle is accessible) to a second rotary position in which each second workpiece table is arranged in the working area and the first or second working spindle is accessible. Furthermore, the present invention relates to a method for operating such a machine tool. Background Art
[0002] Machine tools are known from the prior art in different embodiments and designs. These machine tools can for example include a machine frame at which a workpiece table is arranged at which workpieces can be releasably fixed. The workpieces can be machined by the working spindles of the machine tool.
[0003] In the case of known machine tools, the workpiece table is loaded with workpieces when the working spindle is stopped. Furthermore, when the workpieces are removed from the workpiece table after machining, the working spindle stops. This can result in a relatively high downtime of the machine tool.
[0004] Furthermore, machine tools are known in which a so-called rotary table is rotatably arranged at the machine frame at which two workpiece tables are arranged on opposite sides of the rotary table with respect to the rotary table axis of the rotary table. By rotation of the rotary table about the rotary table axis, in this case one workpiece table each is transferred from the working area to the loading area and at the same time the workpiece table located in the loading area is transferred to the working area. Thereby, the downtime of the machine tool can be reduced.
[0005] Furthermore, the following rotary table is known, on each side of which two workpiece tables are arranged, wherein each workpiece table is associated with its own working spindle. Thereby, the spacing relative to the working spindle must be ensured, which enables the rotary table to rotate without collision. Thereby, the spacing of the rotary table axis relative to the working spindle is very large and the machine tool has a high space requirement. Summary of the Invention
[0006] An object of an embodiment of the present invention is to provide a machine tool in which the spacing between the rotary table axis and the working spindle is reduced, especially in the case of maintaining the same or improved machining time.
[0007] This object is achieved in the case of the machine tool mentioned at the beginning in that the interference region of the first workpiece table of the first rotary table and / or the interference region of the second workpiece table projects laterally out of the rotation region of the first rotary table relative to the first rotary table axis.
[0008] By providing the machine tool with a first rotary table and a second rotary table, each comprising a first workpiece table and a second workpiece table, the spacing of the working spindle relative to the rotation axis can be kept smaller. The rotation of two rotary tables each having one workpiece table on each side requires a correspondingly smaller turning circle compared to a larger rotary table having two workpiece tables on both sides.
[0009] By causing the interference region of the first workpiece table of the first rotary table and / or the interference region of the second workpiece table to project laterally out of the rotation region of the first rotary table relative to the first rotary table axis, the first rotary table can be constructed with a smaller rotation region, i.e., in a reduced size, while maintaining the same or improved accessibility by the first working spindle. For this, the arrangement of the first workpiece table and / or the second workpiece table can ensure a reduced spacing relative to the first working spindle.
[0010] By enabling the first workpiece table by the first working spindle and the second workpiece table by the second working spindle to be accessible in the first rotational position and the workpiece arranged thereon to be machined, the number of workpieces that can be machined by this machine tool is high.
[0011] In principle, it is possible that in the case of this machine tool, only one first workpiece table and only one second workpiece table are respectively arranged at each of the two rotary tables, which are opposed to each other with respect to the rotary table axis. Being opposed to each other means the following, i.e., when one of the workpiece tables is arranged on the side of the rotary table facing the working spindle, the other workpiece table is correspondingly arranged on the side of the rotary table facing away from the working spindle in this case.
[0012] In addition, the following embodiments of the machine tool are possible, in which the first rotary table includes two first workpiece tables on one side and two second workpiece tables on the other side, and these workpiece tables are arranged on opposite sides with respect to the first rotary table axis. This applies in the same way to the second rotary table, which may include two first workpiece tables and two second workpiece tables, and these workpiece tables are arranged on opposite sides with respect to the second rotary table axis.
[0013] Such an embodiment can be further enhanced, in which each rotary table includes at least three first workpiece tables and three second workpiece tables, or four first workpiece tables and four second workpiece tables, and so on.
[0014] The transfer from the first rotational position to the second rotational position may include a 180° rotation about the first rotational axis or the second rotational axis.
[0015] The word "or" should be understood in its original sense as "and in other cases", and continues the relationship of the previous sentence or half-sentence.
[0016] The following has proven to be advantageous when at least one first workpiece table and / or at least one second workpiece table of the first rotary table, and / or when at least one first workpiece table and / or at least one second workpiece table of the second rotary table are correspondingly configured to accommodate and fix at least one workpiece. In particular, these workpiece tables can be configured such that more than just one workpiece can be arranged thereon.
[0017] When the interference regions of the first workpiece tables and / or the second workpiece tables of the first rotary table overlap with the rotational region of the second rotary table during the transfer from the first rotational position to the second rotational position and back, the machine tool can be configured compactly with respect to its extension along the vertical Y-axis.
[0018] By overlapping the interference regions of the first workpiece tables and / or the second workpiece tables of the first rotary table with the rotational region of the second rotary table during the transfer from the first rotational position to the second rotational position, the spacing between the first rotary table axis and the second rotary table axis can be configured to be smaller, as compared to the case of an arrangement in which the interference regions do not overlap with the rotational region of the second rotary table.
[0019] When the first rotary table and the second rotary table are arranged without overlap with each other when viewed transversely to the first rotary table axis or when the first rotary table and the second rotary table partially overlap with each other when viewed transversely to the first rotary table axis, the total extension of the machine tool parallel to the vertical Y-axis can be further reduced.
[0020] When the first rotary table and the second rotary table partially overlap each other, the first rotary table can be partially arranged in the second rotary table or vice versa. In this case, for example, the second rotary table can be constructed to be longer than the first rotary table with respect to the horizontally extending X-axis, whereby the rotary table can be arranged in the indented area. The first rotary table and the second rotary table can be constructed, for example, in a drum shape and include a radius transverse to the horizontally extending X-axis that is larger at its two ends than in the inner area in the middle thereof. In this case, one of the rotary tables that is shorter than the other rotary table can be arranged in these indented areas.
[0021] When the interference area of the first workpiece table and / or the interference area of the second workpiece table of the second rotary table extends laterally out of the rotary area of the second rotary table and overlaps the rotary area of the first rotary table in the case of transfer from the first rotary position to the second rotary position and back, the compact design with respect to the vertically extending Y-axis can be further improved.
[0022] In particular, when the first workpiece table and / or the second workpiece table overlap the second rotary table in the case of transfer from the first rotary position to the second rotary position and the first workpiece table and / or the second workpiece table of the second rotary table overlap the first rotary table in the case of transfer from the first rotary position to the second rotary position, a particularly compact design of the machine tool with respect to the vertically extending Y-axis can be achieved.
[0023] In principle, it is possible that the first workpiece table of the first rotary table is arranged at an arbitrary position in the machine tool when it is transferred from the first rotary position to the second rotary position. This also applies to the second workpiece table when it is transferred from the second rotary position to the first rotary position and back.
[0024] In addition, the following embodiment of the machine tool is also possible, in which a third workpiece table and / or a fourth workpiece table are additionally provided, wherein the first workpiece table, the second workpiece table, the third workpiece table and the fourth workpiece table are arranged uniformly with respect to the first rotary table axis and the transfer from the first rotary position to the second rotary position is achieved in a carousel manner.
[0025] However, it has proven to be advantageous when the machine tool correspondingly includes one or more first workpiece tables and correspondingly includes one or more second workpiece tables at each rotary table.
[0026] To ensure the loading and unloading of the machine tool, it is advantageous in this case if, when the respective second workpiece tables are arranged in the loading area in the first rotational position of the first rotary table and / or in the first rotational position of the second rotary table, and / or if, when the respective first workpiece tables are arranged in the loading area in the second rotational position of the first rotary table and / or in the second rotational position of the second rotary table.
[0027] In principle, it is possible that the first workpiece tables and / or the second workpiece tables of the first rotary table and / or the second rotary table are fixed torsionally rigidly at their respective rotary tables.
[0028] However, the machining by means of the first working spindle or the second working spindle can be facilitated if the first workpiece table of the first rotary table is rotatably supported about a first workpiece table axis extending parallel to the axis of the first rotary table and if the second workpiece table of the first rotary table is rotatably supported about a second workpiece table axis extending parallel to the axis of the first rotary table, wherein the rotational areas of the first workpiece table and the second workpiece table form the respective interference areas of the first workpiece table or the second workpiece table, and / or if the first workpiece table of the second rotary table is rotatably supported about a first workpiece table axis extending parallel to the axis of the second rotary table and if the second workpiece table of the second rotary table is rotatably supported about a second workpiece table axis extending parallel to the axis of the second rotary table, wherein the rotational areas of the first workpiece table and the second workpiece table form the respective interference areas of the first workpiece table or the second workpiece table.
[0029] When the first workpiece tables and / or the second workpiece tables of the first rotary table or the second rotary table act on the rotational area of the second rotary table or the first rotary table in the case of a transfer from the first rotational position to the second rotational position or vice versa, it is advantageous for the collision-free operation of the machine tool if the first rotary table can be arranged in a first release position in which the first workpiece table and the second workpiece table can be arranged in a position and / or orientation in which the second rotary table can transfer from the first rotational position to the second rotational position and vice versa without collision with its first workpiece table and its second workpiece table, and / or if the second rotary table can be arranged in a second release position in which the first workpiece table and the second workpiece table can be arranged in a position and / or orientation in which the first rotary table can transfer from the first rotational position to the second rotational position and vice versa without collision with its first workpiece table and its second workpiece table.
[0030] This ensures that the first workpiece table and the second workpiece table do not overlap with their interference areas in the case of a transfer from the first rotational position to the second rotational position and vice versa, and thus collisions can be avoided.
[0031] The transfer of the first rotary table to the first release position or the second rotary table to the second release position can in principle be achieved arbitrarily. It has proven advantageous if the transfer of the first rotary table to the first release position includes the rotation or revolution of the first rotary table about the first rotary table axis and / or the rotation or revolution of the first workpiece table about the first workpiece table axis and / or the rotation or revolution of the second workpiece table about the second workpiece table axis, and / or if the transfer of the second rotary table to the second release position includes the rotation or revolution of the second rotary table about the second rotary table axis, and / or the rotation or revolution of the first workpiece table about the first workpiece table axis and / or the rotation or revolution of the second workpiece table about the second workpiece table axis.
[0032] It has proven particularly advantageous if the first workpiece table and the second workpiece table are arranged torsionally rigidly at the rotary table and if the transfer to the first release position or to the second release position only includes the transfer of the first rotary table by rotation or revolution about the first rotary table axis or the second rotary table by rotation or revolution about the second rotary table axis.
[0033] When the first workpiece table and / or the second workpiece table are / is rotatable about the first workpiece table axis or the second workpiece table axis respectively, they can be rotated additionally about their own workpiece table axes in addition to or supplementary to the rotation about the first rotary table axis or the second rotary table axis.
[0034] The following embodiment of the machine tool is possible, in which the first rotary table and the second rotary table can be transferred to the first rotary position, to the second rotary position, to the first release position and / or the second release position decoupled, individually and independently of each other with respect to their kinematics in an independent operating mode, and / or in which the first rotary table and the second rotary table can be transferred to the first rotary position, to the second rotary position, to the first release position and / or the second release position coupled, jointly and simultaneously with respect to their kinematics in a relevant operating mode.
[0035] When the first rotary table and the second rotary table can be transferred to the first rotary position, to the second rotary position, to the first release position and / or the second release position decoupled, individually and independently of each other with respect to their kinematics in an independent operating mode, each rotary table can be associated with its own drive unit.
[0036] When the first rotary table and the second rotary table can be transferred to the respective positions in a relevant operating mode, the first rotary table and the second rotary table can be associated with a common drive by means of which the two rotary tables can be moved coupled to each other.
[0037] In addition, the following embodiments of the machine tool are possible, in which a first rotary table axis and a second rotary table axis extending parallel to the first rotary table axis extend parallel to the horizontally extending X-axis, wherein the first rotary table axis and the second rotary table axis are spaced apart from each other with respect to the vertically extending Y-axis, in particular arranged overlapping each other with respect to the vertically extending Y-axis and in particular aligned with each other with respect to the vertically extending Y-axis transverse thereto, or in which a first rotary table axis and a second rotary table axis extending parallel to the first rotary table axis extend parallel to the vertically extending Y-axis, wherein the first rotary table axis and the second rotary table axis are spaced apart from each other with respect to the horizontally extending X-axis, in particular arranged side by side with respect to the horizontally extending X-axis and in particular aligned with each other with respect to the horizontally extending X-axis transverse thereto.
[0038] In the case of an embodiment of the machine tool, it is provided that the first rotary table axis and the second rotary table axis and the first workpiece table axis and the second workpiece table axis extend parallel to each other and parallel to the horizontally extending X-axis or the first rotary table axis, the second rotary table axis and the first workpiece table axis and the second workpiece table axis extend parallel to each other and parallel to the vertically extending Y-axis.
[0039] In the case of the previously described embodiments of the machine tool, all the axes of the workpiece table and the rotary table extend parallel to each other.
[0040] The first spindle axis of the first working spindle and / or the second spindle axis of the second working spindle can extend transversely to each other in two spatial orientations of the rotary table axis and the associated workpiece table axis.
[0041] The machine tool can be designed as compact as possible with respect to its spatial dimensions when, in a first rotational position and in a second rotational position, the first workpiece table and the second workpiece table of a rotary table are arranged point-symmetrically with respect to each other with respect to the associated rotary table axis of the rotary table at which these workpiece tables are arranged, and in the case of the horizontal extension of the respective rotary table axis, the first workpiece table and the second workpiece table are arranged offset from each other with respect to the vertical axis and in particular the rotational regions of the first workpiece table and the second workpiece table of the associated rotary table overlap with the vertical plane extending through the rotary table axis, and in the case of the vertical run of the respective rotary table axis, the first workpiece table and the second workpiece table are arranged offset from each other with respect to the horizontal axis and in particular the rotational regions of the first workpiece table and the second workpiece table of the associated rotary table overlap with the horizontal plane extending through the rotary table axis.
[0042] Thereby, a so-called restricted arrangement of the workpiece table at the rotary table is achieved, whereby the machine tool can be constructed more space-savingly. In addition, the distance between the first working spindle and / or the second working spindle relative to the first rotary table axis or the second rotary table axis can be reduced thereby.
[0043] The restricted arrangement can be realized, for example, when the spacing of the first workpiece table relative to the axis of rotation in the first rotational position is less than the maximum possible.
[0044] The rotational region of the first workpiece table and the rotational region of the second workpiece table associated with the first workpiece table accordingly can overlap each other.
[0045] In the case of such an embodiment, the respective workpiece table axes can be arranged offset from each other with respect to the laterally extending axis. When the respective workpiece table axes extend, for example, parallel to the horizontally extending X-axis, the first workpiece table axis is arranged offset with respect to the second workpiece table axis with respect to the vertically extending Y-axis.
[0046] In the case of the embodiment in which the first workpiece table axis and the second workpiece table axis are arranged extending parallel to the vertically extending Y-axis, these workpiece table axes can be arranged offset from each other with respect to the horizontally extending X-axis that is laterally thereto in the case of being fixedly attached to the rotary table frame overlapping each other.
[0047] Furthermore, it is proven to be advantageous when, in the case of the first rotary table frame, the spacing between the first rotary table frame axis and the first workpiece table axis is less than the interference region of the first workpiece table and / or the spacing between the first rotary table frame axis and the second workpiece table axis is less than the interference region of the second workpiece table.
[0048] Furthermore, in the case of the second rotary table frame, the spacing between the second rotary table frame axis and the first workpiece table axis can be less than the interference region of the first workpiece table, and / or the spacing between the second rotary table frame axis and the second workpiece table axis can be less than the interference region of the second workpiece table.
[0049] Likewise, this enables or further improves the space-saving design of the machine tool.
[0050] At least one first working spindle can be rotatably supported about a first spindle axis and / or at least one second working spindle can be rotatably supported about a second spindle axis. The first spindle axis and / or the second spindle axis can extend parallel to the horizontally extending Z-axis, which extends transversely to the vertically extending Y-axis and transversely to the horizontally extending X-axis.
[0051] In the case of an embodiment of the machine tool, the following is provided, that is, when the first rotary table frame axis and the second rotary table frame axis parallel to the first rotary table frame axis extend parallel to the horizontal X-axis, the first working spindle and the second working spindle are arranged vertically one above the other; and when the first rotary table frame axis and the second rotary table frame axis parallel to the first rotary table frame axis extend parallel to the vertically extending Y-axis, the first working spindle and the second working spindle are arranged horizontally side by side.
[0052] In order to enable the loading and / or unloading of the workpiece tables in the case of simultaneous machining of oppositely arranged workpiece tables, it has proven advantageous when the first rotary table includes a first partition wall through which the first workpiece table and the second workpiece table are spatially separated from each other in the first rotational position and in the second rotational position, and the loading area is completely or at least partially shielded from the working area, and / or when the second rotary table includes a second partition wall through which the first workpiece table and the second workpiece table are spatially separated from each other in the first rotational position and in the second rotational position, and the loading area is completely or at least partially shielded from the working area.
[0053] In this case, the operator of the machine tool is shielded from the working area when entering the loading area through the first partition wall and / or through the second partition wall.
[0054] The working area can extend not only through the first rotary table but also through the second rotary table. In addition, an embodiment of the machine tool is possible in which the first rotary table includes a first working area and the second rotary table includes a second working area, and these working areas are spatially separated from each other.
[0055] In addition, in this case, the first rotary table can include a first loading area and the second rotary table can include a second loading area, and these loading areas are spatially separated from each other.
[0056] When the first rotary table and the second rotary table are associated with a common working area and a common loading area, the machine tool can be implemented in a simplified manner.
[0057] In particular, when the first workpiece table and the second workpiece table at least partially overlap each other, in the case of an embodiment of the machine tool, it can be arranged that the first partition wall of the first rotary table is flexible and / or elastically bendable about an axis extending parallel to the axis of the first rotary table, and / or the second partition wall of the second rotary table is flexible and / or elastically bendable about an axis extending parallel to the axis of the second rotary table.
[0058] Thereby, the separation of the working area from the loading area can be simply matched.
[0059] In principle, it is possible that the first rotary table is arranged directly, without gaps and / or seams, adjacent to the second rotary table. Thereby, the machine tool can be designed with a reduced structural space with respect to its dimensions.
[0060] In the case of an embodiment of a machine tool, the following is provided, namely, the machine frame includes at least one separating section, which is arranged between a first rotary table and a second rotary table, wherein a first partition wall of the first rotary table, the separating section of the machine frame, and a second partition wall of the second rotary table completely or at least partially, without gaps and / or seams, spatially separate the working area from the loading area from each other in a first rotational position and in a second rotational position.
[0061] Furthermore, this object is achieved by a method for operating such a machine tool having at least one of the previously mentioned features, the method having the following steps:
[0062] a. Transfer the first rotary table from a first rotational position or from a second rotational position to a first release position, in which the first workpiece table and the second workpiece table are arranged in a certain position and / or orientation in which the second rotary table can be transferred from the first rotational position to the second rotational position and vice versa without collision with the first rotary table with its first workpiece table and its second workpiece table;
[0063] b. Transfer the second rotary table from the first rotational position to the second rotational position or from the second rotational position to the first rotational position; and
[0064] c. Transfer the first rotary table from the first release position to the first rotational position or to the second rotational position;
[0065] and / or
[0066] d. Transfer the second rotary table from the first rotational position or from the second rotational position to a second release position, in which the first workpiece table and the second workpiece table are arranged in a certain position and / or orientation in which the first rotary table can be transferred from the first rotational position to the second rotational position and vice versa without collision with the second rotary table with its first workpiece table and its second workpiece table;
[0067] e. Transfer the first rotary table from the first rotational position to the second rotational position or from the second rotational position to the first rotational position; and
[0068] f. Transfer the second rotary table from the second release position to the first rotational position or to the second rotational position.
[0069] In the case of an improved variant of the method, it has proven advantageous when the transfer of the first rotary table into the first release position comprises a rotation of the first rotary table about the first rotary table axis and / or a rotation or swiveling of the first workpiece table about the first workpiece table axis and / or of the second workpiece table about the second workpiece table axis, and / or when the transfer of the second rotary table into the second release position comprises a rotation of the second rotary table about the second rotary table axis and / or a rotation or swiveling of the first workpiece table about the first workpiece table axis and / or of the second workpiece table about the second workpiece table axis. Description of the Drawings
[0070] Further features, details and advantages of the invention result from the appended patent claims, from the illustration of a preferred embodiment of the machine tool and method and from the following description.
[0071] Wherein:
[0072] Figure 1 A perspective front view with a partially transparent illustration of the first and second rotary tables of a machine tool according to the invention is shown;
[0073] Figure 2 A schematic flow chart of an embodiment of the method according to the invention is shown. Detailed Description of the Invention
[0074] Figure 1 An embodiment of a machine tool generally designated by reference numeral 2 is shown. The machine tool 2 includes a frame 4, a first working spindle 6 and a second working spindle 8.
[0075] The machine tool 2 includes a first rotary table 10 associated with the first working spindle 6, which is rotatably supported in the frame 4 about a first rotary table axis 12 and which includes a first workpiece table 14 and a second workpiece table 16. The first workpiece table 14 and the second workpiece table 16 are arranged at the first rotary table 10 on mutually opposite sides with respect to the first rotary table axis 12. Each of these workpiece tables defines an interference area into which it is possible or into which it is arranged. The first workpiece table 14 of the first rotary table 10 is rotatably supported about a first workpiece table axis 15 and the second workpiece table 16 about a second workpiece table axis 17 at the first rotary table 10.
[0076] Furthermore, the machine tool 2 includes a second rotary table 20 associated with the second working spindle 8, which is rotatably supported in the machine frame 4 about a second rotary table axis 22 that extends parallel to and is spaced from the first rotary table axis 12. The second rotary table 20 also includes a first workpiece table 24 and a second workpiece table 26. The first workpiece table 24 and the second workpiece table 26 are arranged at the second rotary table 20 on opposite sides facing each other with respect to the second rotary table axis 22. The first workpiece table 24 is rotatably arranged at the second rotary table 20 about a first workpiece table axis 25 and the second workpiece table 26 is rotatably arranged at the second rotary table 20 about a second workpiece table axis 27.
[0077] Likewise, the first workpiece table 24 and the second workpiece table 26 of the second rotary table 20 correspondingly define interference regions into which these workpiece tables can be arranged or are arranged.
[0078] The first rotary table 10 and the second rotary table 20 can correspondingly be transferred from a first rotary position ( Figure 1 ) in which respective first workpiece tables 14, 24 are arranged in the working area and the first working spindle 6 or the second working spindle 8 is accessible to respective second rotary positions in which respective second workpiece tables 16, 26 are arranged at the working area 28 and the first working spindle 6 or the second working spindle 8 is accessible.
[0079] In Figure 1 the case of the embodiment shown, in the case of being transferred from the first rotary position to the second rotary position, respective first workpiece tables 14, 24 can be transferred from the working area 28 to a loading area 30 in which the workpiece tables 14, 16, 24, 26 can be loaded with workpieces.
[0080] In Figure 1 the case of the embodiment visible, the first workpiece tables 14, 24 and the second workpiece tables 16, 26 are constructed such that their interference regions extend outwardly beyond their respective rotary tables 10, 20 transversely to the rotary table axes 12, 22 of the respective rotary tables 10, 20.
[0081] Furthermore, the first rotary table 10 and the second rotary table 20 are arranged relative to each other such that they are arranged overlapping and aligned with each other with respect to a vertically extending Y-axis and are arranged adjacent to each other with their respective rotary regions. Thereby, the interference regions of the first workpiece table 14 and the second workpiece table 16 of the first rotary table 10 at least partially sink into the rotary region of the second rotary table 20 in the case of being transferred from the first rotary position to the second rotary position and vice versa. Conversely, when the second rotary table is transferred from the first rotary position to the second rotary position or vice versa, the interference regions of the first workpiece table 24 and the second workpiece table 26 of the second rotary table 20 engage into the rotary region of the first rotary table 10.
[0082] To avoid collisions in the case of a transfer from the first rotational position to the second rotational position, the first rotary table 10 can be arranged in a first release position in which the first workpiece table 14 and the second workpiece table 16 can be arranged in a certain position and / or orientation in which the second rotary table 20 with its first workpiece table 24 and its second workpiece table 26 can be transferred from the first rotational position to the second rotational position without collision and vice versa. The second rotary table 20 can be arranged in a second release position in which the first workpiece table 24 and the second workpiece table 26 can be arranged in a certain position and / or orientation in which the first rotary table 10 with its first workpiece table 14 and its second workpiece table 16 can be transferred from the first rotational position to the second rotational position without collision and back.
[0083] To transfer the first rotary table 10 into the first release position, the rotary table 10 can be rotated about the first rotary table axis 12. Additionally, the first workpiece table 14 can be rotated about the first workpiece table axis 15 and / or the second workpiece table 16 about the second workpiece table axis 17. This also applies to the second rotary table 20, which can be rotated about the second rotary table axis 22 for transfer into the second release position and / or the first workpiece table 24 about the first workpiece table axis 25 while the second workpiece table 26 is rotated about the second workpiece table axis 27.
[0084] In Figure 1 the case of the embodiment visible in, the first rotary table axis 12, the second rotary table axis 22, the first workpiece table axes 15, 25 and the second workpiece table axes 17, 27 extend parallel to each other and parallel to the horizontally extending X-axis. The first working spindle 6 and the second working spindle 8 are arranged vertically offset from each other and stacked on top of each other, in particular aligned with each other, with respect to the vertically extending Y-axis. The first working spindle 6 is rotatably supported about the first spindle axis 32 while the second working spindle 8 is rotatably supported about the second spindle axis 34. The first spindle axis 32 and the second spindle axis 34 extend parallel to the horizontally extending Z-axis. It extends transversely to the horizontally extending X-axis and the vertically extending Y-axis.
[0085] Figure 1Shows an embodiment of a machine tool 2 in which a first rotary table 10 and a second rotary table 20 are transferred in a restricted arrangement, which constitutes a first rotary position or a second rotary position. Here, the respective first workpiece tables 14, 24 and second workpiece tables 16, 26 of the rotary tables 10, 20 are arranged point-symmetrically with respect to each other about the associated rotary table axes 12, 22 of the respective rotary tables 10, 20 (where the workpiece tables are located). In the case of the horizontal extension of the respective rotary table axes 10, 20, the respective first workpiece tables 14, 24 and second workpiece tables 16, 26 are arranged offset from each other with respect to the vertically extending Y-axis. Thereby, the distances of the first workpiece table axis 15 and the second workpiece table axis 17 relative to the first rotary table axis 12 are reduced, and the distances of the first workpiece table axis 25 and the second workpiece table axis 27 relative to the second rotary table axis 22 are reduced. Consequently, the distances of the first working spindle 6 relative to the first rotary table axis 12 and the second working spindle 8 relative to the second rotary table axis 22 are also reduced.
[0086] Figure 2 Shows a schematic flow chart of an embodiment of a method for operating a machine tool 2 according to the invention. With reference to the illustration according to Figure 1 the method is described as follows:
[0087] In a first step 100, the first rotary table 10 is transferred from the first rotary position or from the second rotary position into a first release position, in which the first workpiece table 14 and the second workpiece table 16 are arranged in a certain position and / or orientation in which the second rotary table 20 can be transferred from the first rotary position to the second rotary position and vice versa without collision with respect to the first rotary table 10 with its first workpiece table 24 and its second workpiece table 26.
[0088] In the subsequent step 101, the second rotary table 20 is transferred from the first rotary position to the second rotary position or from the second rotary position to the first rotary position.
[0089] In the subsequent step 102, the first rotary table 10 is transferred back from the first release position into the first rotary position or into the second rotary position.
[0090] Alternatively or additionally thereto, in step 103 the second rotary table 20 can be transferred from the first rotary position or from the second rotary position into a second release position, in which the first workpiece table 24 and the second workpiece table 26 are arranged in a certain position and / or orientation in which the first rotary table 10 can be transferred from the first rotary position to the second rotary position and vice versa without collision with respect to the second rotary table 20 with its first workpiece table 14 and its second workpiece table 16.
[0091] Thereafter, in step 104, the first rotary table 10 is transferred from the first rotary position to the second rotary position or from the second rotary position to the first rotary position.
[0092] Immediately thereafter, in step 105, the second rotary table 20 is transferred back from the second release position to the first rotary position or is transferred to the second rotary position.
[0093] Thereafter, immediately, machining of the workpiece tables 14, 16, 24, 26 arranged in the working area 28 at this time can be achieved and loading of the workpiece tables 14, 16, 24, 26 arranged in the loading area 30 can be achieved.
[0094] The features disclosed in the previous description, in the claims, and in the drawings of the present invention are important not only individually but also in any combination within the scope of protection of the following claims in the implementation of the present invention in its different embodiments.
[0095] List of reference numerals
[0096] 2 Machine tool
[0097] 4 Machine frame
[0098] 6 First working spindle
[0099] 8 Second working spindle
[0100] 10 First rotary table
[0101] 12 Axis of the first rotary table
[0102] 14 First workpiece table
[0103] 15 Axis of the first workpiece table
[0104] 16 Second workpiece table
[0105] 17 Axis of the second workpiece table
[0106] 20 Second rotary table
[0107] 22 Axis of the second rotary table
[0108] 24 First workpiece table
[0109] 25 Axis of the first workpiece table
[0110] 26 Second workpiece table
[0111] 27 Axis of the second workpiece table
[0112] 28 Working area
[0113] 30 Loading area
[0114] 32 First main spindle axis
[0115] 34 Second main spindle axis.
Claims
1. A machine tool (2) comprising a machine frame (4), at least one first working spindle (6), at least one second working spindle (8), at least one first rotary table (10) associated with the first working spindle (6), which is rotatably supported in the machine frame (4) about a first rotary table axis (12), and comprises at least one first workpiece table (14) and at least one second workpiece table (16), wherein: The first workpiece table (14) and the second workpiece table (16) are arranged on the first rotary table (10) on opposite sides of the first rotary table (10) with respect to the first rotary table axis (12) and define an interference area in which they can be arranged or arranged, and have at least one second rotary table (20) associated with the second working spindle (8), which is rotatably supported in the frame (4) around a second rotary table axis (22) extending parallel to the first rotary table axis (12) and spaced relative to the first rotary table axis (12), and comprises at least one first workpiece table (24) and at least one second workpiece table (26), which are arranged on opposite sides of the second rotary table (20) with respect to the second rotary table axis (22) and are arranged on the first rotary table (10) on opposite sides. The first rotary table (10) and the second rotary table (20) are respectively located at two rotary tables (20) and define an interference area in which they can be arranged or arranged, wherein the first rotary table (10) and the second rotary table (20) can be respectively transferred from a first rotational position in which the first workpiece table (14, 24) is arranged in the working area (28) and the first or second working spindle (6, 8) is accessible to a second rotational position in which the second workpiece table (16, 26) is arranged in the working area (28) and the first or second working spindle (6, 8) is accessible, characterized in that the interference area of the first workpiece table (14) of the first rotary table (10) and / or the interference area of the second workpiece table (16) extend outwardly from the rotation area of the first rotary table (10) transversely to the first rotary table axis (12).
2. The machine tool (2) according to claim 1, characterized in that The interference area of the first workpiece table (14) and / or the second workpiece table (16) of the first rotating table (10) overlaps with the rotation area of the second rotating table (20) when transferring from the first rotation position to the second rotation position and returning.
3. The machine tool (2) according to claim 1 or 2, characterized in that: The first rotating gantry (10) and the second rotating gantry (20) are arranged without overlapping each other when viewed transversely to the first rotating gantry axis (12), or the first rotating gantry (10) and the second rotating gantry (20) partially overlap each other when viewed transversely to the first rotating gantry axis (12).
4. The machine tool (2) according to any one of the preceding claims, characterized in that An interference area of the first workpiece table (24) of the second rotating table (20) and / or an interference area of the second workpiece table (26) extend outwardly from the rotation area of the second rotating table (20) transversely to the second rotating table axis (22), and overlap with the rotation area of the first rotating table (10) when transferring from the first rotation position to the second rotation position and returning.
5. The machine tool (2) according to any one of the preceding claims, characterized in that In a first rotational position of the first rotating table (10) and / or in a first rotational position of the second rotating table (20), each second workpiece table (16, 26) is arranged in a loading area (30), and / or in a second rotational position of the first rotating table (10) and / or in a second rotational position of the second rotating table (20), each first workpiece table (14, 24) is arranged in the loading area (30).
6. The machine tool (2) according to any one of the preceding claims, characterized in that A first workpiece table (14) of the first rotating stage (10) is rotatably supported around a first workpiece table axis (15) extending parallel to the first rotating stage axis (12), and a second workpiece table (16) of the first rotating stage (10) is rotatably supported around a second workpiece table axis (17) extending parallel to the first rotating stage axis (12), wherein the rotation areas of the first workpiece table (14) and the second workpiece table (16) constitute corresponding interference areas of the first workpiece table (14) or the second workpiece table (16) and / or Or the first workpiece table (24) of the second rotating table (20) is rotatably supported around a first workpiece table axis (25) extending parallel to the second rotating table axis (22), and the second workpiece table (26) of the second rotating table (20) is rotatably supported around a second workpiece table axis (27) extending parallel to the second rotating table axis (22), wherein the rotation areas of the first workpiece table (24) and the second workpiece table (26) constitute corresponding interference areas of the first workpiece table (24) or the second workpiece table (26).
7. The machine tool (2) according to any one of the preceding claims, characterized in that The first rotating table (10) can be arranged in a first release position, in which the first workpiece table (14) and the second workpiece table (16) can be arranged in a position and / or orientation, in which the second rotating table (20) with its first workpiece table (24) and the second workpiece table (26) can be transferred from the first rotation position to the second rotation position and vice versa without collision, and / or the second rotating table (20) can be arranged in a second release position, in which the first workpiece table (24) and the second workpiece table (26) can be arranged in a position and / or orientation, in which the first rotating table (10) with its first workpiece table (14) and the second workpiece table (16) can be transferred from the first rotation position to the second rotation position and vice versa without collision.
8. The machine tool (2) according to claim 7, characterized in that The transfer of the first rotating table (10) to the first release position includes the rotation or rotation of the first rotating table (10) around the first rotating table axis (12) and / or the rotation or rotation of the first workpiece table (14) around the first workpiece table axis (15) and / or the rotation or rotation of the second workpiece table (16) around the second workpiece table axis (17), and / or the transfer of the second rotating table (20) to the second release position includes the rotation or rotation of the second rotating table (20) around the second rotating table axis (22) and / or the rotation or rotation of the first workpiece table (24) around the first workpiece table axis (25) and / or the second workpiece table (26) around the second workpiece table axis (27).
9. The machine tool (2) according to any one of the preceding claims, characterized in that The first rotating table (10) and the second rotating table (20) can be transferred to the first rotation position, to the second rotation position, to the first release position and / or to the second release position in their independent operating modes in a decoupled manner with respect to their kinematics, individually and independently of each other, and / or the first rotating table (10) and the second rotating table (20) can be transferred to the first rotation position, to the second rotation position, to the first release position and / or to the second release position in their related operating modes in a coupled manner with respect to their kinematics, jointly and simultaneously.
10. The machine tool (2) according to any one of the preceding claims, characterized in that The first rotating gantry axis (12) and the second rotating gantry axis (22) extending parallel to the first rotating gantry axis (12) extend parallel to a horizontally extending X-axis, wherein the first rotating gantry axis (12) and the second rotating gantry axis (22) are spaced apart from each other with respect to a vertically extending Y-axis, in particular are arranged one above the other with respect to the vertically extending Y-axis and in particular are aligned with each other with respect to a vertical Y-axis extending transversely thereto, or the first rotating gantry axis (12) and the second rotating gantry axis (22) extending parallel to the first rotating gantry axis (12) extend parallel to the vertical Y-axis, wherein the first rotating gantry axis (12) and the second rotating gantry axis (22) are spaced apart from each other with respect to a horizontally extending X-axis, in particular are arranged side by side with respect to the horizontally extending X-axis and in particular are aligned with each other with respect to a horizontal X-axis extending transversely thereto.
11. The machine tool (2) according to any one of the preceding claims, characterized in that The first rotating table axis (12) and the second rotating table axis (22) as well as the first workpiece table axis (15, 25) and the second workpiece table axis (17, 27) extend parallel to each other and parallel to the horizontally extending X-axis, or the first rotating table axis (10), the second rotating table axis (22) and the first workpiece table axis (15, 25) and the second workpiece table axis (17, 27) extend parallel to each other and parallel to the vertically extending Y-axis.
12. The machine tool (2) according to any one of the preceding claims, characterized in that In the first rotational position and in the second rotational position, the first workpiece table (14, 24) and the second workpiece table (16, 26) of the rotary table (10, 20) are respectively arranged point-symmetrically with respect to an associated rotary table axis (12, 22) of the respective rotary table (10, 20) at which they are arranged, and in the case of a horizontal extension of the respective rotary table axis (12, 22) the first workpiece table (14, 24) and the second workpiece table (16, 26) are arranged offset with respect to a vertical axis, and in particular the first workpiece table (14, 24) and the second workpiece table (16, 26) of the associated rotary table (10, 20) are arranged point-symmetrically with respect to one another. The rotation ranges of a workpiece table (14, 24) and a second workpiece table (16, 26) overlap with a vertical plane extending through the rotating table axis (12, 22), and in the case where the corresponding rotating table axis (12, 22) extends vertically, the first workpiece table (14, 24) and the second workpiece table (16, 26) are arranged offset from each other about a horizontal axis, and in particular, the rotation ranges of the first workpiece table (14, 24) and the second workpiece table (16, 26) of the associated rotating table (10, 20) overlap with a horizontal plane extending through the rotating table axis (12, 22).
13. The machine tool (2) according to any one of the preceding claims, characterized in that When the first rotating gantry axis (12) and the second rotating gantry axis (22) extending parallel to the first rotating gantry axis (12) extend parallel to the horizontally extending X-axis, the first working spindle (6) and the second working spindle (8) are arranged vertically on top of each other, and when the first rotating gantry axis (12) and the second rotating gantry axis (22) extending parallel to the first rotating gantry axis (12) extend parallel to the vertically extending Y-axis, the first working spindle (6) and the second working spindle (8) are arranged horizontally side by side with each other.
14. Method for operating a machine tool (2) according to any one of claims 1 to 13, characterized in that With the following steps: a. transferring the first rotary table (10) from the first rotational position or from the second rotational position into a first release position, in which the first workpiece table (14) and the second workpiece table (16) are arranged in a position and / or orientation, in which the second rotary table (20) with its first workpiece table (24) and its second workpiece table (26) can be transferred from the first rotational position to the second rotational position and vice versa without collision with respect to the first rotary table (10); b. transferring the second rotating stage (20) from the first rotating position to the second rotating position or from the second rotating position to the first rotating position; and c. transferring the first rotating stage (10) from the first release position to the first rotation position or to the second rotation position; and / or d. transferring the second rotary table (20) from the first rotational position or from the second rotational position into a second release position, in which the first workpiece table (24) and the second workpiece table (26) are arranged in a position and / or orientation in which the first rotary table (10) with its first workpiece table (14) and its second workpiece table (16) can be transferred from the first rotational position to the second rotational position and vice versa without collision with respect to the second rotary table (20); e. transferring the first rotating stage (10) from the first rotating position to the second rotating position or from the second rotating position to the first rotating position; and f. Transferring the second rotating platform (20) from the second release position to the first rotation position or to the second rotation position.
15. The method according to claim 14, characterized in that The transfer of the first rotating table (10) to the first release position includes the rotation of the first rotating table (10) around the first rotating table axis (12) and / or the rotation or rotation of the first workpiece table (14) around the first workpiece table axis (15) and / or the second workpiece table (16) around the second workpiece table axis (17), and / or the transfer of the second rotating table (20) to the second release position includes the rotation of the second rotating table (20) around the second rotating table axis (22) and / or the rotation or rotation of the first workpiece table (24) around the first workpiece table axis (25) and / or the second workpiece table (26) around the second workpiece table axis (27).