EP2681019A1 - Dispositif de séparation pour machine-outil - Google Patents

Dispositif de séparation pour machine-outil

Info

Publication number
EP2681019A1
EP2681019A1 EP12716220.4A EP12716220A EP2681019A1 EP 2681019 A1 EP2681019 A1 EP 2681019A1 EP 12716220 A EP12716220 A EP 12716220A EP 2681019 A1 EP2681019 A1 EP 2681019A1
Authority
EP
European Patent Office
Prior art keywords
torque transmission
transmission element
machine tool
cutting
guide unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12716220.4A
Other languages
German (de)
English (en)
Other versions
EP2681019B1 (fr
Inventor
Rudolf Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2681019A1 publication Critical patent/EP2681019A1/fr
Application granted granted Critical
Publication of EP2681019B1 publication Critical patent/EP2681019B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains

Definitions

  • Machine tool separating devices in particular manual machine cutting devices, which comprise a cutting strand and a guide unit, are already known.
  • the guide unit forms a closed system together with the cutting strand.
  • the known power-tool parting devices have a torque transmission element supported by the guide unit for driving the cutting strand.
  • the invention is based on a power-tool parting device, in particular a hand-held power tool separating device, with at least one cutting strand, with at least one guide unit forming a closed system at least together with the cutting strand, and with at least one torque transmission element at least partially supported by the guide unit for driving the cutting strand.
  • the torque transmission element is arranged to be movable at least in an uncoupled state at least transversely to a cutting direction of the cutting strand and / or along the cutting direction in the guide unit.
  • the torque transmission element is at least partially surrounded by side walls of the guide unit.
  • a "cutting strand” is to be understood here as meaning, in particular, a unit which is intended to provide atomic cohesion of a material to be processed Picking up work locally, in particular by means of a mechanical separation and / or by means of a mechanical removal of material particles of the workpiece.
  • the cutting strand is intended to separate the workpiece into at least two physically separate parts and / or at least partially separate material particles of the workpiece, starting from a surface of the workpiece and / or remove.
  • the cutting strand is circumferentially moved in at least one operating state, in particular along a circumference of the guide unit.
  • a "guide unit” is to be understood here as meaning, in particular, a unit which is intended to exert a constraining force on the cutting strand at least along a direction perpendicular to a cutting direction of the cutting strand, in order to predetermine a movement possibility of the cutting strand along the cutting direction "Intended" to be understood in particular specially designed and / or specially equipped.
  • the guide unit has at least one guide element, in particular a guide groove, through which the cutting strand is guided.
  • the cutting strand viewed in a cutting plane, guided along an entire circumference of the guide unit by the guide unit by means of the guide element, in particular the guide groove.
  • cutting plane should in particular define a plane in which the cutting strand is moved in at least one operating state along a circumference of the guide unit in at least two mutually oppositely directed cutting directions relative to the guide unit
  • at least essentially transversal is to be understood here in particular as meaning an orientation of an plane and / or a direction relative to a further plane and / or a further direction, which preferably depends on a parallel alignment of the plane and / or the direction deviates relative to the further plane and / or the further direction.
  • the cutting plane is aligned at a machining of a workpiece at least substantially parallel to a machined workpiece surface, in particular in an embodiment of the cutting strand as abrasive, etc.
  • at least substantially parallel should in particular an orientation of a direction relative to a reference direction, in particular in one plane, , wherein the direction relative to the reference direction has a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • a "cutting direction” is to be understood here as meaning, in particular, a direction along which the cutting strand is used to produce a cutting gap and / or for separating and / or removing material particles of a workpiece to be machined in at least one operating state as a result of a drive force and / or a drive torque,
  • the cutting strand is moved in an operating state along the cutting direction relative to the guide unit,
  • the guide unit has a geometric shape which, in the
  • the at least two mutually parallel straight lines and at least two respectively facing ends of the straight lines interconnecting connecting sections, in particular circular arcs comprises.
  • the term "closed system” is intended to define a system comprising at least two components that retain functionality and / or disassemble functionality by interacting in a disassembled state of the system from a higher-level system such as a machine tool The at least two components of the closed system are preferred for one
  • At least substantially inextricably linked By “at least substantially insoluble” should be understood in particular a connection of at least two components that only with the aid of separation tools, such as a saw, in particular a mechanical saw, etc., and / or chemical release agents, such as solvents etc., are separable from each other.
  • An "uncoupled state” is to be understood here in particular as a state of the torque transmission element and / or the power-tool parting device in which the torque-transmitting element of a pinion of a drive unit of a portable power tool and / or a gear and / or a toothed shaft of a gear unit of the portable
  • the machine tool separating device is decoupled from a coupling device and / or from a tool holder of the portable machine tool.
  • a closed system can be achieved in a structurally simple manner that can be conveniently mounted by an operator on a machine tool provided for this purpose.
  • components such as the cutting strand, the guide unit and the torque transmitting element
  • the portable power tool such as a pinion of a drive unit and / or a gear and / or a toothed shaft of a gear unit
  • a clamping of the cutting strand in a coupled state of the torque transmitting element can be advantageously achieved in a clamping of the cutting strand in a coupled state of the torque transmitting element.
  • the guide unit has at least in an outer surface of the guide unit a recess in which the torque transmission element is at least partially arranged.
  • the outer surface of the guide unit preferably runs at least substantially parallel to the cutting plane.
  • a partial region of the torque transmission element is arranged in the recess of the guide unit. It can be advantageously achieved by means of the recess of the guide unit, a bearing of the torque transmitting element in the guide unit.
  • the torque transmission element preferably has an outer dimension extending at least substantially perpendicularly to a rotation axis of the torque transmission element at least in a partial region arranged in the recess of the outer surface of the guide unit, which is at least 0.1 mm smaller than at least substantially perpendicular to the axis of rotation of the torque transmission element extending inner dimension of the recess.
  • substantially perpendicular is intended to mean, in particular, an orientation of a direction relative to a reference direction. Define tion, wherein the direction and the reference direction, in particular in one plane, include an angle of 90 ° and the angle has a maximum deviation of particular less than 8 °, advantageously less than 5 ° and more preferably less than 2 °.
  • the maximum difference between the dimension of the arranged in the recess portion of the torque transmitting element and the inner dimension of the recess is smaller than 2 mm. It can be advantageously achieved a clearance fit between the torque transmitting element and the recess, in particular between the arranged in the recess of the guide unit portion of the torque transmitting element and the recess. The clearance fit can be used advantageously for tensioning the cutting strand in a coupled state of the torque transmission element.
  • the torque transmission element has, at least in a partial region, an extension along an axis of rotation of the torque transmission element which terminates at least substantially flush with an outer surface of the guide unit.
  • the term "at least substantially flush” is to be understood here in particular as an arrangement of the torque transmission element, in particular the portion of the torque transmission element, in an assembled state, wherein the torque transmission element, in particular the portion of the torque transmitting element, in an assembled state, along the axis of rotation of the torque transmission element
  • the torque transmission element, in particular the portion of the torque transmission element extends in a mounted state along the axis of rotation of the torque transmission element, starting from a first outer surface of the guide unit to a second outer surface of the guide unit It may advantageously be a compact embodiment of the machine tool to be achieved.
  • the cutting strand has at least one cutter carrier element which, in an assembled state, has at least one recess on a side of the cutter carrier element facing the torque transmission element, into which the torque transmission element can be inserted. at least one operating state for driving the cutting strand engages.
  • the torque transmission element is preferably designed as a toothed wheel which has a multiplicity of teeth for driving the cutting strand along a circumferential direction extending in a plane extending perpendicular to the axis of rotation.
  • the recess of the cutter carrier element is preferably formed corresponding to an outer contour of the teeth of the torque transmission element designed as a gear.
  • the torque transmission element and / or the torque transmission element and / or the torque transmission element
  • Cutting carrier element has another, one skilled in the appear reasonable design. It can structurally simple forces and / or torques are transmitted to drive the cutting strand to the cutter support element.
  • the cutter support element is at least substantially circular arc-shaped, at least on the side facing the torque-transmitting element.
  • the side of the cutter support element facing the torque transmission element in an assembled state is arranged in particular in at least one partial area, between a central axis of the in and / or on the cutter carrier element
  • connecting element and a central axis of a connecting recess of the cutter support member for receiving the connecting element designed in a circular arc.
  • the arcuate portion is adjacent to the recess into which the torque transmitting element engages formed.
  • Partial region has a radius which corresponds at least substantially to a radius of a Umlenkkontur the guide unit, in particular a Umlenkkontur arranged on a convex end guide element of the guide unit.
  • the side of the cutter support member facing the torque transmitting member in an assembled state is
  • Machine tool separating device can be achieved. Furthermore, advantageously, a small deflection radius can be realized during a deflection of the cutter support element.
  • the torque transmission element has at least one coupling recess, which in a mounted state with a drive element of a portable power tool can be coupled.
  • the torque transmission element preferably has a concentric coupling recess into which a pinion of a drive unit of a portable power tool and / or a toothed wheel and / or a toothed shaft of a gear unit of the portable power tool can engage in the coupled state of the torque transmission element and / or the power-tool parting device ,
  • the coupling recess is in this case preferably formed by a hexagon socket.
  • the coupling recess has another configuration which appears expedient to a person skilled in the art.
  • forces and / or torques for driving the cutting strand can be transmitted from the drive unit and / or the gear unit of the portable power tool to the torque transmission element.
  • the invention is based on a portable power tool with a coupling device for positive and / or non-positive coupling with a machine tool separating device according to the invention.
  • a "portable power tool” is to be understood here in particular as meaning a power tool, in particular a hand tool, which can be transported by an operator so that it can not be transported by a machine
  • the portable power tool in particular has a mass which is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg
  • the machine tool separating device according to the invention and the portable machine tool according to the invention forming a machine tool system can be advantageously achieved, and a portable machine tool can be advantageously achieved which is particularly advantageous for a wide range of applications.
  • the portable power tool comprises at least one drive unit which is intended to drive the cutting strand in at least one operating state with a cutting speed of less than 6 m / s, in particular along the cutting direction of the cutting strand.
  • the drive unit is provided to drive the cutting strand with a cutting speed of less than 5 m / s and more preferably with a cutting speed of less than 4 m / s.
  • a service life of the cutting strand can advantageously be positively influenced.
  • the machine tool separating device according to the invention and / or the portable power tool according to the invention should not be limited to the application and embodiment described above.
  • the machine tool separating device according to the invention and / or the portable power tool according to the invention may have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein.
  • FIG. 1 shows a portable power tool according to the invention with a machine tool separating device according to the invention in a schematic representation
  • FIG. 2 is a detailed view of the machine tool separating device according to the invention in a schematic representation
  • FIG. 3 is a sectional view along the line III-III of Figure 2 of the machine tool separating device according to the invention in a schematic representation
  • Fig. 4 is a detail view of cutter support elements of a
  • FIG. 5 shows a further detailed view of one of the cutter carrier elements of the cutting strand of the machine tool separating device according to the invention in a schematic illustration and 6 shows a detailed view of an arrangement of the cutter carrier elements in a guide unit of the machine tool separating device according to the invention in a schematic representation.
  • FIG. 1 shows a portable machine tool 44 with a machine tool separating device 10, which together form a machine tool system.
  • the portable machine tool 44 has a coupling device 46 for the positive and / or non-positive coupling with the machine tool separating device 10.
  • the coupling device 46 can be designed as a bayonet closure and / or as another coupling device that appears meaningful to a person skilled in the art.
  • the portable power tool 44 has a power tool housing 52, which encloses a drive unit 48 and a gear unit 50 of the portable power tool 44.
  • the drive unit 48 and the gear unit 50 are operatively connected to one another in a manner already known to a person skilled in the art in order to generate a drive torque which can be transmitted to the power-tool parting device 10.
  • the transmission unit 50 is designed as an angle gear.
  • the drive unit 48 is designed as an electric motor unit. However, it is also conceivable for the drive unit 48 and / or the gear unit 50 to have another configuration that appears appropriate to a person skilled in the art.
  • the drive unit 48 is provided with a cutting strand 12 of the machine tool separating device 10 in at least one operating state
  • the portable power tool 44 has at least one operating mode in which a drive of the cutting strand 12 in a guide unit 14 of the machine tool separating device 10 along a cutting direction 18 of the cutting strand 12 with a cutting speed less than 6 m / s is possible.
  • FIG. 2 shows the power-tool parting device 10 in a state decoupled from the coupling device 46 of the portable power tool 44.
  • the machine tool separating device 10 has the cutting strand 12 and the guide unit 14, which together form a closed system.
  • Guide unit 14 is formed as a sword. Furthermore, the guide unit 14, viewed in a cutting plane of the cutting strand 12, at least two convex ends 54, 56 on. The convex ends 54, 56 of the guide unit 14 are arranged on two opposite sides of the guide unit 14. The cutting strand 12 is guided by means of the guide unit 14. For this purpose, the guide unit 14 has at least one guide element 58
  • the guide element 58 is in this case designed as a guide groove 60, which extends in a cutting plane of the cutting strand 12 along an entire circumference of the guide unit 14.
  • the cutting strand 12 is guided by means of the guide groove 60 bounding edge regions of the guide unit 14.
  • the guide element 58 is formed in another manner that appears appropriate to a person skilled in the art, such as, for example, rib-like molding on the guide unit 14, which engages in a recess on the cutting strand 12.
  • the cutting strand 12 is viewed in a plane perpendicular to the cutting plane, from three sides of the
  • Guide unit 14 at least partially mounted torque transmission element 16 for driving the cutting strand 12.
  • the torque transmission element 16 is in a coupled state for driving the cutting strand 12 with a pinion (not shown here) of the drive unit 48 and / or a gear (not shown here) and / or a toothed
  • the torque transmission element 16 has a coupling recess 42 which can be coupled in a mounted state to a drive element of the portable power tool 44.
  • the coupling recess 42 is arranged concentrically in the torque transmission element 16.
  • the coupling recess 42 is provided in a coupled state of the torque transmission element 16 and / or the power tool separating device 10 with the pinion (not shown here) of the drive unit 48 and / or the gear (not shown here) and / or the toothed shaft (not shown here) of the gear unit 50 to be coupled.
  • the coupling recess 42 is formed as a hexagon socket. However, it is also conceivable that the coupling recess 42 has another embodiment which appears expedient to a person skilled in the art.
  • the torque transmitting element 16 is transverse to the cutting direction 18 of the cutting strand 12 and / or along the
  • Cutting direction 18 in the guide unit 14 movably arranged ( Figure 3).
  • the torque transmission element 16 is at least partially disposed between two outer walls 62, 64 of the guide unit 14.
  • the guide unit 14 has, in outer surfaces 20, 22 of the outer walls 62, 64, in each case one recess 24, 26, in which the torque transmission element 16 is arranged at least partially.
  • the torque transmission element 16 is arranged with a portion in the recesses 24, 26 of the outer walls 62, 64.
  • the torque transmission element 16 has, at least in the subregion arranged in the recess, an extension along an axis of rotation 28 of the torque transmission element 16, which terminates flush with one of the outer surfaces 20, 22 of the guide unit 14.
  • arranged portion of the torque transmitting element 16 has an at least substantially perpendicular to the axis of rotation 28 of the Drehmomentübertragungs- element 16 extending outer dimension, which is at least 0.1 mm smaller than a At least substantially perpendicular to the axis of rotation 28 of the torque transmitting member 16 extending inner dimension of the recesses 24, 26.
  • the arranged in the recesses 24, 26 portion of the torque transmitting element 16 is along a direction perpendicular to the rotation axis 28 tion axis spaced in each case to one of the respective
  • FIG. 4 shows a detailed view of cutter carrier elements 30, 32 of the cutting strand 12 of the power-tool parting device 10.
  • strlind 12 comprises a plurality of interconnected cutter support elements 30, 32, each by means of a connecting element 66, 68 of the
  • Cutting strand 12 are connected to each other, which is at least substantially flush with one of two outer surfaces 70, 72 of one of the interconnected blade carrier elements 30, 32 (see also Figure 6).
  • the outer surfaces 70, 72 extend in a state arranged in the guide groove 60 of the cutting strand 12 at least substantially parallel to the cutting plane.
  • a person skilled in the art will select a suitable number of cutter carrier elements 30, 32 for the cutting strand 12.
  • the cutter support elements 30, 32 are each formed integrally with one of the connecting elements 66, 68.
  • the cutter support elements 30, 32 each have a connecting recess 74, 98 for receiving one of the connecting elements 66, 68 of the interconnected cutter support elements 30, 32.
  • the connecting elements 66, 68 are guided by means of the guide unit 14 (FIG. 6).
  • the connecting elements 66, 68 are arranged in an assembled state of the cutting strand 12 in the guide groove 60.
  • the connecting elements 66, 68 may, viewed in a plane perpendicular to the cutting plane, are supported on two side walls 76, 78 of the guide groove 60.
  • the side walls 76, 78 of the guide groove 60 extend, viewed in the cutting plane, starting from the guide unit 14 perpendicular to the cutting direction 18 of the cutting strand 12 to the outside.
  • the cutter support elements 30, 32 of the cutting strand 12 each have a recess 38, 40, which is arranged in each case in an assembled state on a torque transmitting element 16 facing side 34, 36 of the respective cutter support member 30, 32.
  • the torque transmission element 16 engages in at least one operating state for driving the cutting strand 12 into the recesses 38, 40 a.
  • the torque transmission element 16 is in this case designed as a gear.
  • the torque transmitting element 16 comprises teeth 80, 82 which are intended to engage in at least one operating state for driving the cutting strand 12 into the recesses 38, 40 of the cutter support elements 30, 32.
  • the torque transmitting member 16 facing sides 34, 36 of the cutter support members 30, 32 are formed circular arc.
  • the sides 34, 36 of the cutter carrier elements 30, 32 facing the torque transmission element 16 in an assembled state are each in partial regions 88, 90, viewed between a central axis 84 of the respective connecting element 66, 68 and a central axis 86, 96 of the respective connecting recess 74, 98, designed in a circular arc.
  • the arcuate portions 88, 90 are each adjacent to the recesses 38, 40, in which engages the torque transmitting element 16 is formed.
  • the circular-arc-shaped partial regions 88, 90 have a radius which corresponds to a radius of a profile of the guide groove 60 at the convex ends 54, 56.
  • the partial regions 88, 90 are concave (FIG. 5).
  • the cutting strand 12 has cutting elements 92, 94.
  • the cutting elements 92, 94 are each formed integrally with one of the cutter support elements 30, 32.
  • a number of the cutting elements 92, 94 are dependent on a number of cutter support elements 30, 32.
  • a person skilled in the art will select a suitable number of cutting elements 92, 94, depending on the number of cutter support elements 30, 32.
  • the cutting elements 92, 94 are intended to allow a separation and / or removal of material particles of a workpiece to be machined (not shown here).
  • Cutting elements 92, 94 may be formed, for example, as a full chisel, semi-chisel or other cutting edge types that appear appropriate to a person skilled in the art, which are intended to enable a separation and / or removal of material particles of a workpiece to be machined.
  • the cutting strand 12 is endless.
  • the cutting strand 12 is formed as a cutting chain.
  • the cutter support elements 30, 32 are in this case designed as chain links which are connected to one another by means of the bolt-shaped connecting elements 66, 68.
  • the cutting strand 12, the cutter support elements 30, 32 and / or the connecting elements 66, 68 are configured in another manner that appears appropriate to a person skilled in the art.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne un dispositif de séparation pour machine-outil, en particulier un dispositif de séparation pour machine-outil à main, comprenant au moins un brin de coupe (12), au moins une unité de guidage (14) qui forme au moins conjointement avec le brin de coupe (12) un système fermé, ainsi qu'au moins un élément de transmission de couple (16) pour entraîner le brin de coupe (12), qui est au moins en partie monté au moyen de l'unité de guidage (14). L'invention se caractérise en ce que l'élément de transmission de couple (16) est disposé de manière à se déplacer dans l'unité de guidage (14) au moins dans un état désaccouplé au moins transversalement à une direction de coupe (18) du brin de coupe (12) et/ou le long de la direction de coupe (18).
EP12716220.4A 2011-03-03 2012-03-02 Dispositif de coupe d'une machine-outil Active EP2681019B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110005010 DE102011005010A1 (de) 2011-03-03 2011-03-03 Werkzeugmaschinentrennvorrichtung
PCT/EP2012/000952 WO2012116840A1 (fr) 2011-03-03 2012-03-02 Dispositif de séparation pour machine-outil

Publications (2)

Publication Number Publication Date
EP2681019A1 true EP2681019A1 (fr) 2014-01-08
EP2681019B1 EP2681019B1 (fr) 2015-08-12

Family

ID=45999758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12716220.4A Active EP2681019B1 (fr) 2011-03-03 2012-03-02 Dispositif de coupe d'une machine-outil

Country Status (3)

Country Link
EP (1) EP2681019B1 (fr)
DE (1) DE102011005010A1 (fr)
WO (1) WO2012116840A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11311952B2 (en) 2018-01-31 2022-04-26 Milwaukee Electric Tool Corporation Reciprocating saw
EP4065323A4 (fr) 2019-11-25 2023-12-20 Milwaukee Electric Tool Corporation Outil de coupe portatif motorisé

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Publication number Priority date Publication date Assignee Title
CH221661A (de) * 1941-02-11 1942-06-15 Wagner Ernst Kettensäge.
US2348612A (en) * 1941-02-20 1944-05-09 William H Deacon Power saw
US2649871A (en) * 1950-10-30 1953-08-25 Desbarat Edward William Saw attachment for drills and the like
US2992660A (en) * 1955-08-22 1961-07-18 Mcculloch Corp Saw chain and bar unit
US2924110A (en) * 1956-08-20 1960-02-09 Mcculloch Corp Saw chain
US3962929A (en) * 1972-11-24 1976-06-15 Omark Industries, Inc. Drive sprocket for chain saw
US4316327A (en) * 1979-02-26 1982-02-23 Omark Industries, Inc. Chain saw
US4382334A (en) * 1981-07-01 1983-05-10 Omark Industries, Inc. Chain saw device
AT384389B (de) * 1986-04-24 1987-11-10 Scholz Karl Kettensaege
FR2925384B1 (fr) * 2007-12-20 2011-11-18 Pellenc Sa Scie a chaine portative electrique

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Also Published As

Publication number Publication date
EP2681019B1 (fr) 2015-08-12
WO2012116840A1 (fr) 2012-09-07
DE102011005010A1 (de) 2012-09-06

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