• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a position compensation device (1) in a machine tool (2), which machine tool (2) has a multi-spindle machining head (3) and a workpiece carrier (8). These are arranged fixed in a machine frame (4), wherein the machine frame (4) defines a geometry between workpiece carrier (8) and multi-spindle machining head (3) with at least one movable axis. In the multi-spindle machining head (3) are spatially spaced apart, at least two tool spindles (5) are present, of which at least one tool spindle (5) in a receiving device (6) is arranged. The workpiece carrier (8) has at least one workpiece holder (10) which receives a workpiece (9) to be processed in a relative position to the workpiece carrier (8). In particular, a pressure element (16) is arranged between at least the receiving device (6) of a tool spindle (5) and the multi-spindle machining head (3) with a first direction of action (17) parallel to the plane of the multi-spindle machining head (3).
    公开号:AT512526A4
    申请号:T1432012
    申请日:2012-02-02
    公开日:2013-09-15
    发明作者:
    申请人:Hpc Produktions Gmbh；
    IPC主号:
    专利说明:

    16:07:13 02-02-2012 5/30 25
    1
    The invention relates to a position compensation device in a machine tool, which machine tool aulweist a multi-spindle machining head and a workpiece carrier, which are fixed in a machine frame angeoid-net.
    In machine tools, in particular in machine tools with a multi-spindle machining head, geometrical conditions are defined by the design of the multi-spindle machining head. In a Mehrspindei Beaibeitungskopf at least two tool spindles are arranged in a fixed relative position to each other, with an adjustment of the position of the fixed by the at least two tool spindles axes to each other is not possible .. In the case of multiple processing (eg double or triple machining) is It is necessary to correct individual spindle positions to compensate for total tolerances, for example by temperature expansion or clamping errors, since the great advantage of multi-spindle machining heads is precisely that a plurality of machining operations can be carried out simultaneously. A disadvantage, however, is that a position deviation of a machining axis of a tool spindle can be corrected only with great effort. For example, inaccuracies in the positioning of the tool spindle in the multi-spindle machining head or in the positioning of the workpiece on the workpiece carrier can lead to a deviation of the geometric relationships between a machining position on the workpiece and the machining axis of the tool spindle performing this machining. Also, for example, a temperature-related change in geometry between the at least two N2011 / 35800 02/02/2012 16:08
    No .: R645 P.005 / 030 25 16:07:51 02-02-2012 6/30 1 • ft * • · • ft · * • ft ··· ♦ • ♦ ··· # • • ♦ ft " P * * * 4 »ft · •« ft * ft 1 6 • • • * · ·· ♦ · * ··· ··· * 2
    Workpiece spindles come. Since, however, the outer geometry is defined by the machine frame, thus an inaccuracy of the machining of the workpiece would result directly. A deviation of the machining axis of a single tool spindle could possibly still be in the required tolerance limits of the workpiece to be machined. In a multi-spindle machining head, however, a plurality of tool spindles will usually be present, so that the permissible deviation tolerances are exceeded very quickly and a readjustment of the entire machining head is required. A readjustment of a multi-spindle machining head is usually associated with a very large effort, since if necessary, the multi-spindle machining head must be removed from the machine tool. In each fold, the machine tool is not ready for operation during this time and thus causes high downtime costs. From the prior art it is known to carry out a position compensation of tool spindles in a multi-spindle machining head by adding corresponding compensation plates in the receiving device of the tool spindle. Such compensatory measures, however, only static deviations can be compensated, dynamic deviations, as they can occur, for example thermally induced, can not be corrected with such measures. Also, this position compensation requires a disassembly of the affected tool spindles or the entire machining head.
    For an automatic correction of the axial position of a tool spindle, a device with an eccentric ring is disclosed, for example, in EP 1 638 720 B1. In this case, a linear drive movement of an actuating element in a rotational movement and due to the eccentric bearing, implemented in a positional shift. The required effort for the implementation of the linear in a rotary motion and the design effort for the formation of the eccentric discs is particularly in terms of multi-spindle heads, with a variety of individual tool spindles, disadvantageous, since thus the cost will increase significantly. Furthermore, a considerable effort for the arrangement of the drive device is required, which is due to the weight of a multi-spindle N2011 / 35Θ00 02/02/2012 16:09
    No .: R645 P.006 / 030 25 16:08:35 02-02-2012 7/30 • • • ► * »* ♦ • • < 5 ** ♦ *: l: 1 l ** * * * 4 4 • »• • · M · * ·· · ♦ · 3
    Processing head has a negative effect and thus the machine frame must be made much more stable.
    From EP 1 882 548 B1 a similar device is known, wherein a swash plate is used, which is driven in synchronism with the speed of the tool spindles and thus can compensate dynamically position inaccuracy.
    From DE 89 04 006 U a shaft bearing is known which acts on a rolling bearing with an outer and an inner ring, depending on the speed of the while, a pressure fluid, the pressure of this pressure fluid is chosen such that this of a detected load on the Rolling is proportional.
    To compensate for the Z-direction, ie to the direction along the axis of rotation of a tool spindle, for example from DE 10 2009 031 428 A known that a hydraulic pressure element acts on a truncated cone and thus by pressurizing a displacement of the tool holder along this Z-direction is possible ,
    From the prior art is also known to arrange piezoelectric elements in the storage of a tool spindle, as disclosed for example in DE 198 59 360 A1
    Investigations, which were carried out in the course of the development of the subject position compensation device, have shown that piezoelectric elements are unsuitable for the subject application. Such piezoelectric elements, which have a corresponding StelNeistung and Posffioniergenauig-speed to be used in machine tools, on the one hand are very expensive and on the other hand, in particular, a determination or dependence on a few manufacturers of such piezoelectric elements with it. While the cost factor for machine tools with only a few tool spindles is of secondary importance, it gains in multi-spindle machining heads with mostly several Weikzeugspindeln essential importance. N2011 / 35800 02/02/2012 16:10
    No: R645 P.007 / 030 16:09:15 02-02-2012 8/30 25 t «♦ ·» • · · · · * ··· • · «« «« · · · φ » · 4 »4 * * · *» «· ·· * · • ·· 4
    Another point against the use of piezoelectric elements concerns the rigidity of such a system. The advantage that results from a Einzeiverstellbarkeit a tool spindle should not be lost by the additional effort to fix the position after the adjustment or to maintain the position during dynamic adjustment.
    The object of the invention is therefore to provide a device which can adapt the position of the working axis of a tool spindle in a multi-spindle machining head at least in one working direction and thereby has a high rigidity against the loads occurring. The positioning device should be so ausgebiklet that each individual tool spindle of a multi-spindle machining head can be made positionable. In particular, it is Auligabe of the invention, the positioning device in such a way that on the one hand a simple and therefore cost-effective construction is achieved and that further easy maintenance is guaranteed.
    The object of the invention is achieved by a position compensation device in a machine tool, which machine tool has a multi-spindle machining head and a workpiece carrier jaw, which are arranged fixed in a machine frame. The machine frame defines a geometry with at least one movable axis between the workpiece carrier and the multi-spindle machining head. At least two tool spindles are arranged spatially distanced from one another, at least one tool spindle is arranged in a receiving device, and the workpiece carrier also has a workpiece holder which receives a workpiece to be machined in a position in relation to the workpiece carrier.
    A plane of the multi-spindle machining head is herein understood to mean a plane facing the workpiece to be machined and from which the tools received in the tool shafts or in tool holders of the tool spindle protrude. The plane may, for example, be formed by a plane surface of the machining head, but it is also possible that this plane is formed by an imaginary plane. in the following will be verton / 358ΟΟ 02/02/2012 16:10
    No .: R645 P, 008/030 16:09:58 02-02-2012 9/30 25 ϊ «ft ft 'ft .1 f» »ft« ft * 5 that the plane is also defined by two processing axes ( For example, X and Y) can be spanned, but this is not mandatory
    The specific construction of a machine tool with a multi-spindle machining head determines the geometric relationships between the machining head and the workpiece, but in particular between each individual tool spindle and the workpiece. Structural details of a machine tool having a multi-spindle machining head will not be discussed further herein, as is known in the art.
    Since a pressure element is now arranged between at least the receiving device of a tool spindle and the multi-spindle machining head, with a first direction of action parallel to the plane of the multi-spindle machining head, the Aufhahmevonichtung can be selectively moved in this direction. For simplicity, the first direction of action is understood to be a direction parallel to the X coordinate. By this training, a compensation of a positional deviation is possible, as it can occur, for example, by wear andfoder thermal expansion effects during normal operation.
    An advantage is an embodiment according to which the pressure element is designed as a hydraulic pressure element, in particular as a hydraulic pressure cell. A hydraulic element allows the subject embodiment of the position compensation device to achieve a particularly high rigidity of the device, since liquids are largely incompressible and thus reliable positioning under load is possible. Also it is not necessary with this training that additional clamping device »! required to hold the moving component in place, even while performing the processing steps.
    In a further development, it is provided that between the receiving device and the multi-spindle machining head, two pressure elements are arranged with the same first direction of action, preferably between the receiving device and the multi-spindle machining head. In one embodiment, therefore, the receiving device can be arranged between two printing elements, the N2011 / 35800 02/02/2012 16:11
    No .: R645 P.009 / 030 25 16:10:41 02-02-2012 25 10/30
    • «o» «t ·« 6
    On the other hand, printing elements are each connected to the multi-spindle machining head. For a clamping of the receiving device is achieved. The two pressure elements can also be arranged in series, lying one behind the other, so as to achieve a greater deflection. Furthermore, it is possible that a pressure element allows a coarse adjustment, the second pressure element allows a fine adjustment of the adjustment.
    To achieve a position compensation in a deviating from the first effective direction second effective direction, it is provided that the receiving device is formed by a frame, wherein between the frame and a spindle carrier for receiving the tool spindle, a force acting in a second direction of action pressure element is arranged.
    According to a development, it is further provided that the pressure element acting in the second direction of action is designed as a hydraulic pressure element, in particular as a hydraulic pressure cell.
    A Weitbildung consists fern »1 in that between the frame and the spindle carrier, two pressure elements are arranged with the same second effective direction, preferably between the frame and the spindle carrier. Analogous to a previous description, a clamping of the frame is possible with this training. Audi in turn can be achieved by series connection, an increase in the deflection.
    According to a development, it is provided that the second direction of action lies in the plane of the first direction of action, the two directions of action forming an angle to one another, preferably 90 °.
    According to a development, it is possible that between the multi-spindle machining head and the Aufnahmevorrichfung two pairs, on the receiving device respectively oppositely disposed printing elements, are present, wherein the respective first effective direction is spaced from each other
    A development further consists in that between the frame and the spindle carrier two pairs, on the spindle carrier in each case opposite N2011 / 35900 02/02/2012 16:12
    No .: R645 P.010 / 030 25 16:11:21 02-02-2012 11/30 * ι · · * • · · 4 · «· ···· ··· * ·« · · * · ** 4 ·· J 3 * i V * · 4 · «« ··· 7 arranged pressure elements, are present, their respective second direction of action being spaced from each other.
    With these two embodiments, the Aufnahmevorrichfung or the frame is clamped and by the spaced arrangement of the pressure element pairs a symmetrization of the force application is achieved
    A further development is that the two, lying on the first and / or second direction of action pressure elements, each connected to a pressure control valve. This individual control of each individual pressure element is achieved, so that by an appropriate pressurization an individual force vector can be formed. With a objective development of the arrangement of the printing elements on the Aufhahmevorrichtung and / or the frame, thus also a rotation can be formed.
    With a further development, according to which the two adjacent pressure elements of the two pairs are each connected via a common pressure line to the pressure regulating valve, it is achieved that the pressure elements are in each case directly controlled on one side of the receiving device and / or the frame according to the principle of the connected vessels and thus the exercise the same power. This ensures that the Aufnahmevorrichfung or the frame moves exactly parallel to the first or second direction of action.
    A further development is that between the spindle carrier and the multi-spindle Bearfoeitungskopf a position detection device is arranged, which is designed to detect a distance parallel to the crop and / or second direction of action. Due to the specific configuration of a multi-spindle machining head and the processing steps that can be performed on the workpiece, it may be that a position deviation is given only for some tool spindles. In the case of a multi-spindle machining head, not all tool spindles will at the same time work on the workpiece clamped on the workpiece carrier or on the workpiece spanned on the workpiece carrier. Therefore, a position compensation is only required if a machining step requires a tool spindle, in which between the set 02/02/2012 16:13
    No .: R645 P.011 / 030 25 16:12:04 02-02-2012 12/30 • * »·« »·· •« * ··· Μ * · • * 8
    Machining position on the workpiece and the machining axis of the tool spindle, there is a deviation.
    To this end, a further development is advantageous, according to which an evaluation circuit is provided, which generates a drive signal for pressurizing a pressure element from a dynamically determined distance value. With this refinement, dynamic position fluctuations, as occur, for example, due to a worn bearing, can also be compensated. For highly loaded machine tools, or when the pressure stability of a pressure element is not sufficient to absorb the forces occurring during the machining of a workpiece, a development is advantageous, between the Aufnahmevorrichfung and the multi-spindle machining head and / or between the spindle carrier and the multi-spindle This can be performed with dissolved clamping device, the position compensation and then the clamping device are activated so that a quasi-firm connection is formed, which derives the forces occurring on the machining head or on the machine frame. The clamping device can be formed, for example, electromagnetically or hydraulically acting.
    According to a development, it is also possible that the Dmckelement is also designed as an electric Dmckelement, in particular as Piezoelemenl
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each shows in a highly schematically simplified representation:
    Fig. 1 is a schematic representation of the subject position compensation device in a machine tool equipped with multi-spindle heads;
    Fig. 2 shows a possible embodiment of the subject position compensation device; N2011 / 35800 02/02/2012 16:13
    No .: R645 P.012 / 030 .3 25 16:12:42 02-02-2012 13/30 9
    Fig. 3 shows another possible embodiment of the subject position equalizing device;
    Fig. 4 A hydraulic control scheme for position adjustment possible with the subject Posiüonsausgleichsvorrtchtung.
    1 shows a subject position compensation device 1 in a machine tool 2, in particular a machine tool 2 with a multi-spindle machining head 3, wherein the multi-spindle machining head 3 is arranged fixed in a machine frame 4.
    The multi-spindle machining head 3 has at least two spatially spaced apart tool spindles 5, of which at least one tool spindle is arranged in a Aufnahmevorrichfung 6 each tool spindle 5 has a receptacle for a machining tool, further by each tool spindle, a machining axis 7 festgeiegt, below this machining axis 7 according to the conventions in machine tool construction, a feed axis, often the Z-axis is understood.
    In the machine frame 4, a workpiece carrier 8 is further arranged, on which a workpiece 9 to be machined is arranged by means of a workpiece holder 10. In the preferred embodiment, a movable machining axis 11 is also formed by the workpiece carrier 8, the workpiece carrier 8 can move the workpiece 9 in the Z direction toward or away from the multi-spindle machining head 3 and move relative thereto in the X and / or Y direction , The individual machining tools received in the tool spindle 5 can thus simultaneously work on a plurality of sections on the workpiece 9. Preferably, a rotation of the workpiece carrier 8 about this first axis of rotation 11 is possible, so that the clamped workpiece 9 can be wasted in relation to the processing tools.
    The illustrated case with only two tool spindles 5 was selected solely for reasons of association, in most cases a multi-spindle machining head has a plurality of tool spindles, so that at the same time a large number of different N2011 / 35800 02/02/2012 16:14
    No .: R645 P.013 / 030 25 16:13:23 02-02-2012 14/30 • β «t« * 4 t • i > Oder t t * * * * oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder oder.
    It is also possible that the workpiece carrier can accommodate more than one workpiece. These workpieces can be supplied individually, in succession or simultaneously to the multi-spindle machining head.
    Since deviations of the machining axes 7 from the required nominal position can occur due to the intended operation, it is provided according to the subject position compensation device that a pressure element 12 is arranged between the multi-spindle machining head 3 and the receiving device 6 of a tool spindle 5. This pressure element 12 is adapted to adjust the Aufnahmevorrichfung 6 and thus the position of the machining axis 7 in relation to Mehrspindei-processing head 3, at least in one direction in the plane 25 of the multi-spindle machining head 3. Preferably, the pressure element 12 is formed as a hydraulic pressure cell The advantage of a hydraulic pressure element 12 is that with a high positioning accuracy of about 1 pm, a very high rigidity of> 1000 N / pm is possible. Thus, it is possible to durohführen the position adjustment and to maintain this position without additional holding or clamping elements during operation.
    Due to the simple and inexpensive execution of the subject position compensation device, it is possible to equip each individual tool spindle 5 of a multi-spindle machining head 3 with a position compensation device 1, so that an individual adjustment or correction of Positronsabweichungen for each tool spindle 5 can be performed.
    With the preferred embodiment of a hydraulic pressure box, a position compensation of +/- 50 pm can be achieved.
    Fig. 2 shows a possible embodiment of the subject position compensation device 1. The illustration shows a plan view of a tool spindle 5, which is arranged in a receiving device 6 between the multi-spin N2011 / 35600 02/02/2012 16:15
    No .: R645 P, 014/030 25 16:14:06 02-02-2012 1S / 30 · · »t« <. ». &Lt; * ** *. * * *» * &Lt; ln * · · * Lt
    In each case, a pressure element 16 is arranged, the two pressure elements being arranged opposite one another and on the same first direction of action 17.
    It is further agreed that the first direction of action 17 corresponds to the X feed direction. By the opposite arrangement of the pressure elements 16, a clamping of the receiving device 6 is achieved with respect to the machining head 3, in particular thus a high rigidity can be achieved by both pressure elements 16 are pressurized, wherein by forming a pressure difference between the two pressure elements, a change the position of the receiving device 6 along the first direction of action 17 can be achieved. By maintaining the pressure or the pressure difference, the Aufnahmevorrichfung 6 is fixed in this position, without the need for an additional clamping device should be present.
    In the illustrated case, the Aufnahmevorrichfung 6 is formed by a frame 18, wherein according to a further development between the frame 18 and a Spindeltiäger 19 of the tool spindle 5, printing elements 20 are arranged. These two pressure elements 20 are arranged opposite to the spindle carrier 19 of the tool spindle 5 with the second direction of rotation itself and thus cause a clamping of the spindle carrier 19 with respect to the frame 18. Preferably, the first direction of action 17 and the second direction of action 21 form a right angle, so the second direction of action 21 corresponds to the Y-feed direction of a machine tool. The intersection of the first 17 and second 21 effective direction thus corresponds to the Z-machining axis 7.
    The above-described advantages and modes of operation of the pressure elements 16 arranged in the first direction of action 17 can be transmitted directly to the pressure elements 20 acting in the second direction of rotation 21.
    For better distinction, the printing elements are marked with different reference symbols in the figures. However, this does not mean that they must be different types of printing elements. Thus, only a directional reference should be introduced to the printing elements N2011 / 35800 02/02/2012 16:15
    No .: R645 P.015 / 030 25 16:14:48 02-02-2012 16/30 * · «· * # ♦» ·· • ♦ · · «• # ··« ·· * • ♦ · * • t · · * ·· * ··· «·· 12 can be clearly described in relation to their effective direction. In Figure 1, reference numeral 12 denotes a printing element without a specific directional reference. In the following figures, reference numeral 16 designates those printing elements whose effective direction is aligned in the direction of the first direction of curvature 17. Correspondingly, reference numeral 20 designates those printing elements whose effective direction is aligned in the direction of the second direction of action 21.
    FIG. 3 shows a further possible embodiment of the present position equalization device 1. In the multi-spindle processing unit 3 constructed for simplicity, only two tool spindles 5 are arranged for reasons of simplification. Both each in a spindle carrier 19, wherein the Unke tool spindle 5 is additionally arranged in a receiving device 6 and in the plane 25 of the machining head 3 is movable. The receiving device 6 is formed by a double-H-like frame 22 between the frame 22 and the multi-spindle machining head 3 are arranged pressure elements 16 which can move the frame 22 in the direction of the first direction of action 17 when pressurized. Rectangularly, pressure elements 20 are likewise arranged between the frame 22 and the spindle carrier 19, which can displace the spindle carrier 19 relative to the frame 22 in the direction of the second direction of action 21. Thus, the position of the machining axis 7 relative to the machining head 3 and thus in particular to the right, shown tool spindle 5, which is connected via its spindle carrier 19 invariably connected to the multi-spindle machining head, are moved.
    In FIG. 3, only shown schematically, a position detection device 23 is also present, which can detect a position of the machining axis 7 of a tool spindle 5, in relation to the multi-spindle machining head 3. The position detection device is preferably arranged between the spindle carrier 19 and the multi-spindle machining head 3 and can be integrated and thus detect a relative position of the machining axis 7 in the two directional components of the first 17 and second 21 directions of action. 142011/35800 02/02/2012 16:16
    No .: R645 P.016 / 030 13 25 ie: 15:31 02-02-2012 17/30 * fe * * * fe
    The position detection device may be formed, for example, as an eddy current sensor and detects a longitudinal movement, path change or a linear path change. This longitudinal movement or path change can now be determined absolutely at a reference point, for example, on the machine frame, or as a relative movement to a definable starting reference value. For a continuous detection of the position of the machining axis 7 is possible, especially during operation of the tool spindle to be positioned 5. Furthermore, the position detection device can also be designed as a probe, according to the LVDT or potentiometric measuring principle.
    According to a further development, provision can be made for a clamping device 24 to be arranged between the receiving device 6 and the multi-spindle machining head 3 and / or between the spindle carrier 19 and the multi-spindle machining head 3. With the pressure elements 16,20 only a certain maximum force can be applied, which are exceeded by the, occurring during the machining of a workpiece forces on the tool spindle 5, so that there is a risk of loss of the adjusted position. With such a clamping device 24, a mechanical fixation of the receiving device 6 and / or the spindle carrier 19 relative to the multi-spindle machining head 3 can be achieved. To compensate for the position of the machining axis 7, the clamping device 24 is released, the position compensation is performed and then the clamping device 24 is activated again in order to permanently strengthen the set position.
    Preferably, only a position compensation in the first 17 and / or second 22 effective direction is performed, so it will always be applied to the adjacent pressure elements of the two pairs of effective direction with the same pressure. For example, the two right pressure elements 16 of the arranged between the processing head 3 and the receiving device 6 Druckeiemente 16 are subjected to a higher pressure than the two left pressure elements. As a result, the recording device 6 is moved to the right relative to the machining head 3 and thus the distance between the two tool spindles, parallel to the first direction of action, is reduced. Now every N2011 / 35800 02/02/2012 16:17
    No .: R645 P.017 / 030 25 16:16:15 02-02-2012 18/30 4 4 4 · • * 4 4 4 · 4 4 ·· • 4 4 4 «··· 14 individual pressure elements individually from triggered a pressure control valve, a pressure difference between the upper and lower pressure element can be formed, so that a rotation of the receiving device 6 is possible. This is, for example, advantageous if more than one tool spindle 5 are arranged in a spindle carrier 19.
    4 schematically shows a hydraulic drive circuit for a pair of pressure elements 16. By way of example, the pressure elements 16 are shown here, which are arranged between the multi-spindle machining head and the receiving device 6 in the first direction of action 17 itself. The ratios described below can be applied directly to any other pair of printing elements, in particular to the printing elements, which are arranged between the receiving device and the spindle carrier on the same second effective direction. The pressure elements 16 are each connected via a pressure line 13 with a pressure control valve 14, which pressure control valve 14 is in turn connected to a pressure generator 15. The pressure control valve 14 is for example of the type 4/3-way and is suitable to adjust the pressure difference in the doses such that As previously mentioned, by simultaneously pressurizing opposing pressure elements 16 to form a slight differential pressure, positron displacement can be achieved while maintaining high rigidity, which is usually to maintain positional adjustment without additional pressure Clamping device allows.
    In the figures 2 to 4 variants are shown, in which two pressure elements are arranged opposite to each in the same direction of action. By adjusting a pressure difference between these two pressure elements, a displacement of the element held therebetween is achieved. However, it is also possible that in each case one of the two pressure elements is formed by a passive Druckeiement, for example by a spring element. Although this design is at the expense of the rigidity of the overall system, but results in a simplified structure. N2011 / 35800 02/02/2012 16:17
    No .: R645 P.018 / 030 25 16:16:58 02-02-2012 19/30
    t »·« »ft« · * »··· ··· * · ♦ · 15
    With the objective Pos'rtionsausgleichsvorrichtung a system is created, which is inexpensive to purchase, which has a special meaning in particular with a view to use in a multi-spindle machining head with a plurality of tool spindles. From a cost point of view also advantageous is a simple feasibility of an exchange of a system or a Werkzeugspindei. Due to the possibility of permanent pressurization, a high rigidity of the overall system is achieved. Furthermore, with a correspondingly fast pressure control, high dynamics can be achieved, such that even dynamic positioning inaccuracies such as vibrations can be compensated or compensated during operation.
    Finally, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals and the same component names, wherein the disclosures contained throughout the description can be applied mutatis mutandis to the same parts with the same reference numerals or identical component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions. All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. Is the indication 1 to 10 to be understood that all sub-areas, starting from the lower limit 1 and the upper limit 10 are included, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 6.1 or 5.5 to 10.
    The embodiments show possible embodiments of the position compensation device, it being noted at this point that the invention N2011 / 35800 02/02/2012 16:18
    Nr: R645 P.019 / 030 25 16:17:40 02-02-2012 20/30 16 is not limited to the specifically illustrated embodiments thereof, but also various combinations of the individual embodiments are mutually possible and this variation possibility due to the teaching For technical action by objective invention in the skill of those working in this technical field is also there are all conceivable variants, which are possible by combinations of individual details of the illustrated and described embodiment variant of the scope of protection
    FIGS. 2 and 3 show further and optionally independent embodiments of the receiving device, with the same reference numerals and component designations being used again for the same parts as in the preceding figures. To avoid unnecessary repetition, reference is made to the detailed description in the preceding figures.
    For the sake of order, it should finally be pointed out that in order to better understand the construction of the position compensation device, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size.
    The task underlying the independent inventive solutions can be taken from the description.
    Above all, the individual embodiments shown in FIGS. 1 to 4 can form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures. N2011 / 35800 02/02/2012 16:19
    No .: R645 P.020 / 030 16:20:25 02-02-2012 25/30 • f I «• · 1 * 1 Μ · · · · · -η-
    REFERENCE NUMBERS
    Position compensation device
    machine tool
    Multi-spindle machining head
    machine frame
    tool spindle
    Recording device Machining axis, z-axis Workpiece carrier Workpiece workpiece holder
    Machining axis Pressure element Pressure line Pressure control valve Hydraulic pressure generator
    pressure element
    Ite effective direction, x-axis
    frame
    spindle carrier
    pressure element
    Second effective direction, y-axis frame
    Position detection device
    clamping device
    Level 02/02/2012 16:21
    No .: R645 P.025 / 030
    权利要求:
    Claims (15)
    [1]
    16:18:16 02-02-2012 21/30 25 1. "Position compensation device (1) in a machine tool (2), which machine tool (2) a multi-spindle machining head (3) and a workpiece carrier (8) which are arranged fixed in a machine frame (4), wherein the machine frame (4) has a geometry between the workpiece carrier (8) and multi-spindle machining head (3) at least one movable axis defines, wherein in the multi-spindle machining head (3) spatially distanced from each other, at least two Werkzeugspindetn (5) are present, of which at least one tool spindle (5) in a receiving device (6) is arranged, wherein the workpiece carrier (8} at least one workpiece holder (10), which aufhimmt a workpiece to be machined (9) in a relative position to the workpiece carrier (8), characterized in that between at least the receiving device (6) of a Werkzeu Spindle (5) and the Mehrspindei-processing head (3), with a first direction of action (17) parallel to the plane of the multi-spindle machining head (3), a pressure element (16) is arranged
    [2]
    2. Position compensation device according to claim 1, characterized in that the force acting in the first direction of action pressure element (16) is designed as a hydraulic pressure element, in particular as a hydraulic pressure cell.
    [3]
    3. Position compensation device according to one of claims 1 or 2, characterized in that between the Aufnahmevorrichfung (6) and the multi-spindle machining head (3), two Druckeiemente (16) with the same first direction of action (17) are arranged, preferably between the receiving device (6) and the multi-spindle machining head (3). N2011 / 35800 02/02/2012 16:19 No .: R645 P.021 / 030 25 16:18:53 02-02-2012 22/30 ** ·· «·« «• · * ··» «* • φ • * • · · · · * * • · · · · # • · · * »· 2
    [4]
    4. Position compensation device according to one of claims 1 to 3, characterized in that the receiving device (6) by a frame (1B) is formed, wherein between the frame (18) and a spindle carrier (19) for receiving the tool spindle (5), a pressure element (20) acting in a second direction of action (21) is arranged.
    [5]
    5. position compensation device according to claim 4, characterized in that in the second direction of action (21) acting Druckeiement (20) is designed as a hydraulic pressure element, in particular as a hydraulic pressure cell.
    [6]
    6. Position compensation device according to claim 4 or 5, characterized in that between the frame (18) and the spindle carrier (19), two pressure elements (20) are arranged with the same second effective direction (21), preferably between the frame (18) and the spindle carrier (19).
    [7]
    7. position compensation device according to one of claims 4 to 6, characterized in that the second effective direction (21) in the plane of the first effective direction (17), wherein the two effective directions (17,21) include a Winkei each other, preferably 90 °.
    [8]
    8. position compensation device according to one of claims 3 to 7, characterized in that between the multi-spindle machining head (3) and the receiving device (6) two pairs, on the receiving device (6) respectively oppositely disposed Druckeiemente (16) are present, wherein the each first direction of action (17) is spaced from each other.
    [9]
    9. position compensation device according to one of claims 4 to 8, characterized in that between the frame (18) and the spindle carrier (19) has two pairs, on the spindle carrier (19) respectively opposite N2011 / 35800 02/02/2012 16: 20 kr .: R645 P, 022/030 25 16:19:30 02-02-2012 • • «« • * * • * · 3 Μ · «• * · ii *» · 23/30 arranged printing elements (20) are present, wherein the respective second effective direction (21) is spaced from each other.
    [10]
    10. position compensation device according to one of claims 3 or 6, characterized in that the two, on the first (17) and / or second (21) effective direction lying pressure elements (16,20), each with a pressure control valve (14) are connected.
    [11]
    11. Position compensation device according to one of claims 8 or 9, characterized in that the two adjacent pressure elements (16,20) of the two pairs are each connected via a common pressure line to the pressure regulating valve (14).
    [12]
    12. Position compensation device according to one of claims 1 to 11, characterized in that between the spindle carrier (19) and the multi-spindle machining head (3) a position detecting device (23) is arranged
    [13]
    13. Posrtionsausgleichsvorrichtung according to claim 12, characterized in that an evaluation circuit is provided which generates a drive signal for pressurizing a pressure element (16,20) from a dynamically determined distance value.
    [14]
    14. Positionsausgleichsvomchtung according to any one of claims 1 or 4, characterized in that between the receiving device (6) and the multi-spindle machining head (3) and / or between the spindle carrier (19) and the multi-spindle machining head (3) a clamping device (24 ) is arranged. N2011 / 35800 02/02/2012 16:21 No .: R645 P.023 / 030
    [15]
    15. Position compensation device according to one of claims 1 to 14, characterized in that the pressure element (16,20) is designed as an electrical pressure element, in particular as a piezoelectric element. &Quot; HPC &quot; Produktions GmbH by lawyers Bürger &amp; Partner Rechtsanwalt GmbH N2011 / 35800 02/02/2012 16:21 Nr .: R645 P.024 / 030
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    引用文献:
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    DE102009031428A1|2009-07-01|2011-01-05|Technische Universität Carolo-Wilhelmina Zu Braunschweig|Holder for e.g. machine tool such as grinding disk, which is utilized for machining workpiece, has actuator support connected with spindle stock such that actuator rests relative to stock when shaft retainer rotates relative to stock|AT518538B1|2016-09-09|2017-11-15|Fill Gmbh|Processing machine for processing workpieces|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT1432012A|AT512526B1|2012-02-02|2012-02-02|POSITION COMPENSATING DEVICE IN A TOOL MACHINE|AT1432012A| AT512526B1|2012-02-02|2012-02-02|POSITION COMPENSATING DEVICE IN A TOOL MACHINE|
    EP13153471.1A| EP2623257B1|2012-02-02|2013-01-31|Position compensation device in a machine tool|
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