• 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:
    There is a tool holder (1, 22, 24) for internal machining, in particular Innenhonen, a workpiece (2) having a geometrically indeterminate blade having a tool (6), with a spindle (7), with a drive connected to the spindle (7) Tool holder (5) for moving the received tool (6) and with a device (9) for pressing the tool (6) in the feed direction (10) to the workpiece (2). In order to be able to finish, among other things, non-circular inner surfaces, it is proposed that the device (9) has an abutment (11) which can be attached to the inner side (8) of the workpiece (2) and which is fixed to the tool holder (1, 22, 24) in its Distance to the tool (6) is guided adjustable, which tool (6) via the tool holder (5) on the tool holder (1, 22, 24) is rotatably mounted.
    公开号:AT514624A1
    申请号:T50475/2013
    申请日:2013-07-26
    公开日:2015-02-15
    发明作者:
    申请人:Wfl Millturn Tech Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a tool holder, a machine tool and a method for internal machining, in particular Innenhonen, a workpiece having a geometrically indeterminate cutting tool having a spindle, with a drive connected to the spindle tool holder for moving the recorded tool and with a device for pressing of the tool in the feed direction to the workpiece.
    For external honing of workpieces, tool holders are known from the prior art (DE102012108594A1) which oscillate a tool clamped in a tool holder via a spindle. The pressing or readjusting of the tool to the workpiece takes over a device on the tool holder, with which the tool holder relative to the shank of the tool is adjustable in position. However, such a tool holder is not suitable for internal honing of workpieces with narrow dimensions. In addition, with deeply located in the workpiece inner surfaces with a reduced machining accuracy to be expected, which is essentially due to the limited rigidity of the shaft of the tool holder.
    Furthermore, cylindrical tools for internal honing of workpieces are known (DE2903162C2), with which round inner surfaces can be machined in a chipping manner in cross-section.
    It is therefore an object of the invention, starting from the above-described prior art to provide a tool holder, which is not only suitable for fine machining of inner cross-sections, but can also finely finish relatively low internal surfaces. In addition, the tool holder should be inexpensive and universally applicable.
    The invention achieves the stated object in that the device has an engageable on the inside of the workpiece support, which is guided adjustable on the tool holder in their distance from the tool, which tool is rotatably mounted on the tool holder on the tool holder.
    If the device has an abutment that can be set against the inside of the workpiece and is adjustably guided on the tool holder in its distance from the tool, internal machining with high precision can be enabled even in comparatively low-lying inner surfaces of a workpiece, when the tool is rotatably mounted on the tool holder via the tool holder , About the engagable support namely the tool holder can be independent of the stiffness of its shaft supported on the workpiece, whereby the tool can be accurately positioned against the inner surface or pressed with a precisely defined force. Even the unavoidable in the leadership of the tool holder axis tolerances of a machine tool can cause no negative impact on the quality of internal processing by the support according to the invention, which benefits a universal usability of the tool holder according to the invention. In particular, however, can be carried out by the inventive construction of the engagable to the workpiece support and the movable tool holder that internal processing of workpieces in which a round cross-sectional contour is required as a result of machining fine machining. The moving in the Flohlraum of the workpiece tool can namely be delivered via the support of the inner surface to be machined, whereby - dispensing with a rotational movement of the tool holder about its longitudinal axis - also a non-circular or angular cross-sectional shape is innenhonbar. In addition, since the support of the shank of the tool holder can be mechanically relieved, the possibility may arise of constructing a tool holder in a structurally simple and cost-effective manner, which permits precise internal machining, in particular honing, or deep machining of deep inner contours.
    In general, it is mentioned that the tool holder can in particular have finishing tools, for example honing tools or grinding tools.
    Structurally simple design, the support can be performed adjustable via at least one engaging the shank of the tool holder guide at a distance from the tool. In addition, by a support of the shaft, the rigidity of the tool can be increased and thus the machining accuracy can be improved.
    Simplified design conditions may result if the guide is designed as a linear guide.
    If the guide has at least one hydraulically or mechanically operable actuating element, then the active actuating devices present on a machine tool can be used to actuate the support via the shaft of the tool holder. The tool holder can be further simplified structurally.
    A relief of the tool holder with respect to bending can be made possible when the support and the tool holder are provided on opposite sides of the shaft.
    If the tool holder has an angular gear and if the spindle is drive-connected to the tool holder via the angle gear, a comparatively slim tool holder can be created, with which even narrow internal cross sections of a workpiece can be honed internally with rotating tools.
    Does the support force-generating parallel to the output shaft of the bevel gear, the storage of the tool holder and thus the movable guidance of the tool can be significantly improved. The machining accuracy of the tool holder can be increased.
    Damage to the inner surface of the workpiece to be machined on the inside can be avoided if the support has a lower hardness than the workpiece on its contact surface.
    This risk of damage can be further reduced if a rotatably mounted roller forms the contact surface of the support.
    A supporting in the cavity of the workpiece support can be provided if the support has a plurality of parallel-acting support elements with separate Anstellflächen. In addition, the leadership of the tool can be improved thereby, which can increase the internal machining in terms of their accuracy.
    If each support element is assigned one guide each, the accuracy can be improved by increased adjustment possibilities. Thus, namely, a fine adjustment of the inclination of the tool to the workpiece can be made possible, especially if both support elements are independently adjustable in their distance from the tool.
    Advantageous conditions for internal machining of workpieces can result if the tool holder is used in a multi-axially movable recording of a machine tool.
    The invention has also set itself the task of improving a known from the prior art method for fine machining, in particular Innenhonen, a workpiece with a tool holder such that thus non-circular or angular inner cross-sections can be accurately finished even in relatively deep layers.
    The invention solves this problem by at least partially inserting the tool holder into the workpiece, setting the support and tool of the tool holder against an inner surface of the workpiece, and machining the workpiece by means of the tool attached to the tool holder having a geometrically indeterminate cutting edge In the case of internal machining, the support generates at least part of the pressing force of the rotating tool against the workpiece.
    The fact that the tool holder is at least partially introduced into the workpiece and the support and the tool of the tool holder is employed on an inner surface of the workpiece, advantageous guiding conditions can result on the tool, which can lead to an improved machining internal machining of the workpiece when the internal machining Support generated at least a portion of the pressing force of the rotating tool to the workpiece. In contrast to the prior art, the method according to the invention can therefore be used to precisely machine non-circular or angular internal cross-sections even in comparatively deep inner layers on the workpiece.
    In the figures, for example, the subject invention is illustrated in more detail with reference to several embodiments. Show it
    1 is a side view of an inserted into a workpiece for Innenhonen tool holder according to a first embodiment,
    2 is an enlarged, torn-off view of FIG. 1,
    3 is a sectional view according to III-III of Fig. 1,
    Fig. 4 is a torn-off side view of another tool holder according to a second embodiment and
    Fig. 5 is a sectional view through another tool holder with a two-part support.
    The tool holder 1, for example, shown in FIG. 1 for internal processing of a metallic workpiece 2 is fastened to a multi-axially movable receptacle 3 of a machine tool 4. The tool holder 1 has a rotatably mounted on this tool holder 5, to which a tool 6 is attached. The tool 6 has a geometrically indeterminate cutting edge and is preferably designed as a honing tool. Thus, workpieces can be ground inside and / or honed inside. The rotational movement of the tool holder 5 is generated by the drive assembly with a spindle 7, which is driven by the machine tool 4. By means of the multi-axially movable receptacle 3, the tool holder 1 or its tool 6 can be pressed against the inner surface 8 of the workpiece 2 to be processed in the feed direction.
    In order to ensure a high machining accuracy, however, the tool 6 is pressed against the workpiece 2 in the feed direction 10 via a device 9 provided on the tool holder 1, as can be recognized in particular according to FIG. For this purpose, this device 9 is associated with a support 11 which is designed to be adjustable against the inside 8 of the workpiece 2. In addition, the support 11 is adjustably guided on the tool holder 1 in its distance from the tool 6, which ensures a positionally accurate or force-controlled pressing of the tool 6 to the workpiece 2. Due to this support 11 according to the invention, which creates a bearing of the tool holder 1 on the workpiece 2 - in conjunction with the decoupled from the honing movement of the tool 6 movement of the tool holder 1 - it is also possible, in addition to an internal processing of circular inner surfaces 8 and inner surfaces with a square or non-circular cross-sectional contour finish. Such a cross-sectional contour can be seen for example in FIG. 3. The tool 6 machined a part of the inner surface 8 finely, wherein the support 11 takes over the delivery of the tool 6 substantially. The receptacle 3 of the machine tool 4 can be readjusted in this regard in order to ensure a constant cutting angle between the tool 6 and workpiece 2. After this portion has been finely machined, more workpiece areas for internal processing are conceivable, but this is not shown in detail.
    The positional adjustment of the support 11 is structurally achieved by a guide 12 which acts on the shaft 13 of the tool holder 1 and is firmly connected thereto. The trained as a linear guide guide 12 has for this purpose a guide member 14 on which the shoe-shaped support 11 is mounted linearly displaceable.
    Depending on the guide position of the support 11 on the guide 12 so that the distance to the tool 6 is adjustable, which guide position is adjusted by a guide 12 associated adjusting element 15. This actuator 15 is hydraulically actuated by its diaphragm 16 according to the amount of hydraulic fluid supplied or discharged displaces the support 11 on the guide member 14, as can be seen in FIG. This hydraulic fluid can be supplied to the adjusting element 15, for example via the shaft 13 of the tool holder 1. However, as a control element 15, a hydraulic cylinder is conceivable - also electrically operated actuators or the like are conceivable, which has not been shown in detail.
    As can further be seen from FIG. 2, the support 11 and the tool holder 5 are provided on opposite shaft sides 17, 18, which relieves the shaft 13 with regard to bending during internal machining.
    In addition, a bevel gear 19 is provided in the tool holder 1. The tool holder 5 is drive-connected to the spindle 7 via this angle gear 19. By this drive-side measure results in a slender shaft 13 on the tool holder 1. Even deeply located inner surfaces 8 are thus accessible from the tool holder 1.
    Since the support 11 acts force-generating concentrically to the output shaft 20 of the angle gear 19, the employment of the tool 6 is extremely accurate, resulting in particularly good machining results.
    In addition, the support 11 at its Anstellfläche 21 has a lower hardness than the workpiece 2, for example in the form of a plastic coating. As a result, damage to the inner surfaces are avoidable.
    The tool holder 22 shown by way of example in FIG. 4 differs from the tool holder 1 shown in FIG. 1 by its contact surface 21 of the support 11. This contact surface 21 is provided on a rotatably mounted roller 23 in order to further reduce the risk of surface damage.
    In the case of the tool holder 24 shown only in a sectional view according to FIG. 5, a second-divided support 11 can be seen, which is set against the workpiece 2 via two support elements 25 and 26. The support elements 25 and 26 with their separate Anstellflächen 27, 28 act in parallel and generating force in the direction of the drive shaft 20. A positionally accurate guidance of the tool 6 is thus created. The support elements 25 and 26 each have a guide 12 is assigned to allow a fine adjustment of the inclination of the tool 6 to the workpiece 2. Both support members 25 and 26 are independently adjustable via the guide 12, which has not been shown in detail.
    权利要求:
    Claims (13)
    [1]
    1. Tool holder for internal machining, in particular Innenhonen, a workpiece (2) having a geometrically indeterminate cutting edge having tool (6), with a spindle (7), with a with the spindle (7) drivingly connected tool holder (5) for moving of the received tool (6) and with a device (9) for pressing the tool (6) in the feed direction (10) to the workpiece (2), characterized in that the device (9) to the inside (8) of the workpiece (2) adjustable support (11) which is adjustably guided on the tool holder (1, 22, 24) in its distance from the tool (6), which tool (6) via the tool holder (5) on the tool holder (1,22, 24) is rotatably mounted.
    [2]
    2. Tool holder according to claim 1, characterized in that the support (11) via at least one on the shaft (13) of the tool holder (1, 22, 24) engaging guide (12) at a distance from the tool (6) is adjustably guided.
    [3]
    3. Tool holder according to claim 2, characterized in that the guide (12) is designed as a linear guide.
    [4]
    4. Tool holder according to claim 2 or 3, characterized in that the guide (12) has at least one hydraulically or mechanically operable actuating element (15).
    [5]
    5. Tool holder according to claim 2, 3 or 4, characterized in that the support (11) and the tool holder (5) on opposite shaft sides (17, 18) are provided.
    [6]
    6. Tool holder according to one of claims 1 to 5, characterized in that the tool holder (1, 22, 24) has an angular gear (19) and that the spindle (7) via the angular gear (19) to the tool holder (5) drivingly connected is.
    [7]
    7. Tool holder according to claim 6, characterized in that the support (11) parallel to the output shaft (20) of the angular gear (19) acts force-generating.
    [8]
    8. Tool holder according to one of claims 1 to 7, characterized in that the support (11) on its contact surface (21) has a lower hardness than the workpiece (2).
    [9]
    9. Tool holder according to one of claims 1 to 8, characterized in that a rotatably mounted roller (23) forms the Anstellfläche (21) of the support (11).
    [10]
    10. Tool holder according to one of claims 1 to 8, characterized in that the support (11) has a plurality of parallel supporting elements (25, 26) with separate Anstellflächen (27, 28).
    [11]
    11. Tool holder according to claim 10, characterized in that each support element (25, 26) each associated with a guide (12).
    [12]
    12. Machine tool with a multi-axially movable receptacle (3) for tools and with a tool holder (1,22, 24) inserted into the receptacle (3) according to one of claims 1 to 11.
    [13]
    13. A method for internal machining, in particular Innenhonen, a workpiece (2) with a tool holder (1, 22, 24) according to one of claims 1 to 11, wherein the tool holder (1, 22, 24) at least partially into the workpiece (2 ), the support (11) and the tool (6) of the tool holder (1, 22, 24) against an inner surface (8) of the workpiece (2) and the workpiece (2) on the tool holder (1, 22, 24) fixed tool (6) having a geometrically indeterminate cutting edge is machined inside, wherein during internal machining, the support (11) generates at least a part of the pressing force of the rotating tool (6) to the workpiece (2).
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2853346A3|2015-12-23|
    EP2853346A2|2015-04-01|
    EP2853346B1|2019-11-06|
    AT514624B1|2016-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3834998A1|1988-10-14|1990-04-19|Krupp Gmbh|Angle drilling and milling arm|
    EP1815943A1|2006-02-02|2007-08-08|NAGEL Maschinen- und Werkzeugfabrik GmbH|Method and apparatus for honing bore holes.|
    DE102007038123A1|2007-08-04|2009-02-05|Gehring Gmbh & Co. Kg|Machine for producing non-cylindrical bore surfaces|
    DE2903162C2|1979-01-27|1989-10-05|Robert Bosch Gmbh, 7000 Stuttgart, De|
    EP2136962B1|2007-04-18|2010-10-20|National Oilwell Varco, L.P.|Long reach spindle drive systems and method|
    GB0819794D0|2008-10-29|2008-12-03|Nat Oilwell Varco Lp|Spindle drive systems and methods|
    DE102012108594A1|2011-09-16|2013-03-21|Thielenhaus Technologies Gmbh|Device for finish-machining of raceway of bearing ring in wind power plant, has eccentric assembly that forms functional unit displaceable relative to hollow shaft, and pressure device acting in tool feeding direction and attached to head|DE102018206113A1|2018-04-20|2019-10-24|Elgan-Diamantwerkzeuge Gmbh & Co. Kg|Finishing method for producing a non-circular cylindrical bore and fine machining system and grinding tool unit|
    CN112247819A|2020-10-09|2021-01-22|郝世博|Large-diameter thick-wall seamless steel pipe processing device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50475/2013A|AT514624B1|2013-07-26|2013-07-26|Tool holder, machine tool and method for internal processing, in particular Innenhonen, a workpiece|ATA50475/2013A| AT514624B1|2013-07-26|2013-07-26|Tool holder, machine tool and method for internal processing, in particular Innenhonen, a workpiece|
    EP14178840.6A| EP2853346B1|2013-07-26|2014-07-28|Tool holder, machine tool and method for processing the insides, in particular honing the insides of a workpiece|
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