WO2012089636A1 - Dispositif de serrage de machine-outil portative - Google Patents

Dispositif de serrage de machine-outil portative Download PDF

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Publication number
WO2012089636A1
WO2012089636A1 PCT/EP2011/073898 EP2011073898W WO2012089636A1 WO 2012089636 A1 WO2012089636 A1 WO 2012089636A1 EP 2011073898 W EP2011073898 W EP 2011073898W WO 2012089636 A1 WO2012089636 A1 WO 2012089636A1
Authority
WO
WIPO (PCT)
Prior art keywords
operating
unit
switching
clamping
clamping device
Prior art date
Application number
PCT/EP2011/073898
Other languages
German (de)
English (en)
Inventor
Jens Zieger
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 WO2012089636A1 publication Critical patent/WO2012089636A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor

Definitions

  • Hand tool clamping devices which comprise a clamping unit for clamping a machining tool in an axial direction and a control unit for actuating the clamping unit.
  • the operating unit in this case has an operating element which can be coupled in an operating mode with a rotatably mounted clamping element of the clamping unit.
  • the invention is based on a hand tool clamping device, in particular an oscillating hand tool clamping device, with at least one clamping unit for clamping a machining tool in an axial direction and with at least one operating unit, which has at least one operating element for actuating the clamping unit, at least one operating mode with at least one rotatable mounted clamping element of the clamping unit can be coupled.
  • the operating unit comprises at least one switching unit which has at least one switching element which is provided to engage in at least one coupling recess of the switching unit for coupling the operating element to the clamping element.
  • the term “intended” should be understood to mean in particular specially equipped and / or specially designed.
  • “Clamping unit” is to be understood here as meaning, in particular, a unit which axially supports a machining tool by means of a positive connection and / or by means of a frictional connection on a spindle, in particular - special an oscillating driven spindle, a hand tool ensures.
  • the term "axial direction” should in particular define a direction which preferably runs at least substantially parallel to an axis of rotation of the spindle.
  • substantially parallel is understood to mean, in particular, an orientation of a direction relative to a reference direction, in particular in a plane be, 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 °.
  • operating unit is intended here to define in particular a unit which has at least one operating element which can be actuated directly by an operator and which is provided for by means of an actuation and / or by inputting parameters a process and / or a To influence and / or change the state of a unit coupled to the operating unit.
  • an "operating mode” is to be understood here in particular as a mode of the operating unit in which a force and / or torque can act on the clamping unit by means of the operating element, so that the machining tool can be tensioned and / or relaxed by the clamping unit in the axial direction and In a particularly preferred embodiment, the machining tool can be tensioned and / or relaxed in a coupling mode of the operating unit, Furthermore, the power flow between the operating element and the clamping unit is preferably in a decoupling mode
  • a "switching unit” is to be understood here in particular as a unit which has at least one switching element by means of which a change from at least one first operating mode to a second operating mode can be made possible.
  • a “switching element” is to be understood here as meaning, in particular, an element which is intended to trigger a switching process directly and / or indirectly as a result of an actuation by means of a force of an operator.
  • a “coupling recess” is to be understood here as meaning, in particular, a material recess which is purposefully provided for the switching element to transmit forces and / or torques in at least one operating mode take.
  • the coupling recess and In particular, an edge bounding the coupling recess is in particular designed such that forces and / or torques for clamping and / or releasing the machining tool can be transmitted between the switching element and the coupling recess by means of an interaction of the clamping unit and the operating unit.
  • an advantageous coupling of the operating element to the clamping element can be achieved. Furthermore, in the case of a switching element decoupled from the coupling recess, an advantageous decoupling of the operating element from a movement, in particular an oscillating movement, the clamping unit and / or the spindle can be achieved.
  • the coupling recess is arranged on the clamping element.
  • the coupling recess is formed by a material recess in the clamping element, in particular in an outer surface of the clamping element.
  • the clamping element preferably has a smaller material thickness, in particular a material thickness of 0 mm, in comparison to a region of the clamping element adjoining the coupling recess.
  • at least two ribs are arranged on an outer surface of the clamping element, in which the control element engages at least partially.
  • the at least two ribs may in this case in particular extend at least substantially perpendicular to the outer surface, so that the at least two ribs can form a receptacle for the control element. Furthermore, in an alternative embodiment of the power tool clamping device is also conceivable that the
  • Coupling recess is arranged on the control element, wherein the control element is movably arranged on the clamping element. It can be advantageously achieved a simple structural design of the switching unit.
  • the switching element is at least translationally movable on
  • the switching element is mounted translationally movable in the operating element.
  • the switching element is rotatably mounted about an axis movable in the operating element and can be pivoted by means of a mechanical or electrical control in the coupling recess and / or rotated.
  • the switching unit has at least one actuating element which is mounted at least partially on the operating element and which is intended to actuate the switching element.
  • actuating element is to be understood here as meaning, in particular, an element which can be actuated directly by an operator for the direct and / or indirect actuation of the switching element.
  • the actuating element is at least translatorsich movably mounted in a switching recess of the operating element.
  • a "switching recess” is to be understood here as meaning, in particular, a material recess in which the actuating element is movably mounted, wherein an edge region bounding the switching recess is provided to guide the actuating element along at least one movement component
  • the operating element in the region of the coupling recess preferably has a smaller material thickness, in particular a material thickness of 0 mm, in comparison to an area of the operating element adjoining the coupling recess Direction, which extends at least substantially parallel to a longitudinal extent of the switching element, is movably mounted in the control recess.
  • the actuating element rotatably about an axis b eweglich is mounted in the switching recess and actuated by means of a mechanical or electrical control, the switching element as a result of a pivoting movement and / or a rotational movement.
  • the switching unit has at least one guide element which is movably mounted in the operating element and which is intended to receive the switching element.
  • a "guiding element” is to be understood here as meaning, in particular, an element which is specifically intended to specify a direction of movement of a component and / or a compliance with a direction of movement, in particular a linear movement. tion direction, to ensure the component.
  • the guide element is particularly preferably designed as a guide slide, which is mounted translationally movable in the operating element.
  • the guide element is formed in another form that appears appropriate to a person skilled in the art. It can be advantageously achieved a guidance of the switching element along a preferred direction of movement, so that a reliable switching operation can be ensured.
  • the switching unit has at least one spring element, which is provided to engage the switching element in at least one operating mode
  • a “spring element” is to be understood here as meaning, in particular, an element which is elastically deformable under a load, wherein the element can store a potential energy and, after a discharge, can automatically return to its pre-stress state by means of the stored potential energy.
  • Spring element is preferably designed as a compression spring.
  • the spring element it is also conceivable for the spring element to be formed by another element that appears meaningful to a person skilled in the art, such as a tension spring, a torsion spring, etc.
  • a reliable engagement of the shifting element in the coupling recess arranged in the tensioning element can be ensured.
  • the operating unit comprises at least one positioning unit, which has at least one positioning element which is provided to fix the operating element in at least one operating position at least rotationally fixed.
  • the operating element is fixed in a rotationally fixed manner relative to a handheld power tool housing of the handheld power tool by means of the positioning unit.
  • a "positioning unit” is to be understood here as meaning, in particular, a unit which secures the operating element in a predetermined operating position, in particular in a predetermined rotational position relative to the hand-held power tool housing, by means of a positive and / or non-positive connection
  • the positioning element itself is designed as an elastic component which can apply a latching force as a result of elastic deformability.
  • the operating element can be transferred by means of an increased expenditure of force from an operating position to a further operating position.
  • unintentional movement of the operating element from an operating position can be prevented at least substantially.
  • the operating element is designed as an operating lever which is rotatably mounted about at least one axis of rotation extending at least substantially parallel to the axial direction.
  • a "control lever” is to be understood here in particular as a rotatably mounted control element of the control unit which has at least one lever element perpendicular to a rotation axis, wherein the lever element has a longitudinal extension which is at least twice as large as at least one other extension perpendicular to the axis of rotation
  • the axis of rotation of the control lever extends at least substantially coaxially with the axis of rotation of the spindle.
  • the invention is further based on a hand tool with a hand tool clamping device according to the invention. It can be advantageously achieved a high ease of use for an operator of the power tool.
  • FIG. 1 shows a handheld power tool according to the invention with a hand tool clamping device according to the invention in a schematic illustration
  • FIG. 2 is a sectional view along the line I I-I I of Figure 1 of the hand tool of the invention in a schematic representation
  • FIG. 3 shows a detailed view of a switching unit of the operating unit arranged in the operating lever in a decoupling mode of the operating unit of the hand-held power tool clamping device according to the invention
  • FIG. 4 shows a detailed view of the switching unit of the operating unit arranged in the operating lever during a movement from the decoupling mode into a coupling mode the control unit of the hand tool clamping device according to the invention in a schematic representation
  • FIG. 5 shows a detailed view of the switching unit of the operating unit arranged in the operating lever in the coupling mode of the operating unit of the hand-held power tool clamping device according to the invention in a schematic representation
  • FIG. 6 shows a detailed view of the switching unit of the operating unit arranged in the operating lever with a removed control lever housing shell of the portable power tool clamping device according to the invention in a schematic representation
  • FIG. 7 shows a detailed view of the operating lever located in a working position of the operating unit of the hand-held power tool clamping device according to the invention in a schematic illustration
  • FIG. 8 shows a detailed view of an operating lever of a control unit of the handheld power tool clamping device according to the invention located in a parking position in a schematic representation.
  • DETAILED DESCRIPTION FIG. 1 shows an electrically operated hand tool 52 having a
  • the hand tool 52 comprises a hand tool housing 54 which encloses an electric motor unit 56, a gear unit 58 and an output unit 60 of the hand tool 52.
  • the hand-held power tool housing 54 here comprises two housing half-shells 62, 64, which are detachably connected to one another along a plane passing through a pivot axis 66 of a work spindle 68 of the output unit 60.
  • a machining tool 14 for machining of workpieces can be fastened.
  • the tool holder 70 is non-rotatably connected to the work spindle 68 formed as a hollow spindle 72 by means of a press fit, so that a pivoting movement of the hollow spindle 72 can be transmitted to the tool holder 70 (FIG. 2).
  • the tool holder 70 is connected to the hollow spindle 72 by means of another type that appears appropriate to a person skilled in the art.
  • FIG. 2 shows a sectional view through the handheld power tool 52 along the line I II I from FIG. 1.
  • the electric motor unit 56 arranged in the handheld power tool housing 54 comprises an output shaft 74, which is mounted in the handheld power tool housing 54 by means of a ball bearing 76 of the gear unit 58.
  • the output shaft 74 has an eccentric region 78, which comprises a pin 82 arranged eccentrically to a rotation axis 80 of the output shaft 74.
  • the pin 82 is connected via a further ball bearing 84 of the gear unit 58, which is arranged on the pin 82, with a rocker 86 of the gear unit 58, which is non-rotatably connected to an outer ring of the other ball bearing 84.
  • the rocker 86 is connected to an oscillating sleeve 88 of the gear unit 58 arranged on the hollow spindle 72.
  • an oscillating pivotal movement of the hollow spindle 72 about the pivot axis 66 of the hollow spindle 72 is generated by an interaction of the eccentric region 78, the rocker 86 and the oscillating sleeve 88.
  • the processing unit attached to the tool holder 70 can be machined.
  • tool 14 are also driven oscillating.
  • the hollow spindle 72 is in this case supported by a movable bearing designed as a needle bearing 90 of the output unit 60 and a bearing constructed as a ball bearing 92 of the output unit 60 fixed bearing in the power tool housing 54.
  • the machining tool 14 For rotationally fixed attachment of the machining tool 14, the machining tool 14 driving recesses 94 which are arranged distributed in a circular ring along a circumferential direction 96 evenly on the machining tool 14.
  • the tool holder 70 has hump-like elevations 98 which correspond to the driving recesses 94 and extend in an assembled state of the machining tool 14 on the tool holder 70 along the axial direction 16 through the driving recesses 94.
  • the hump-like elevations 98 are formed here as locking cams 100.
  • the power tool clamping device 10 comprises a clamping unit 12.
  • the hand tool clamping device 10 comprises an operating unit 18 which comprises an operating element 20 for operating the clamping unit 12, which in an operating mode of the operating unit 18 with a first rotatably mounted clamping element 22nd the clamping unit can be coupled.
  • the operating element 20 is arranged on a side facing away from the tool holder 70 side of the power tool housing 54.
  • the operating element 20 is designed as an operating lever 48, which is mounted rotatably about an axis of rotation 50 extending at least substantially parallel to the axial direction 16.
  • the axis of rotation 50 extends at least substantially coaxially with the pivot axis 66 of the hollow spindle 72.
  • the operating lever 48 is secured axially in a bearing region of the handheld power tool housing 54.
  • the operating lever 48 has an annular securing element 104 which engages in an annular groove 106 of the power tool housing 54 and thus secures the operating lever 48 axially.
  • the groove 106 has a greater extent along the axial direction 16 in comparison to the securing element 104, so that the securing element 104 has an axial play relative to edge regions of the groove 106.
  • the first rotatably mounted clamping element 22 of the clamping unit 12 is formed as a spindle nut 102.
  • the spindle nut 102 is rotatably mounted on one of the mounted receiving side 70 in the power tool housing 54, wherein an axis of rotation of the spindle nut 102 extends coaxially to the axis of rotation 50 of the operating lever 48.
  • the spindle nut 102 is here axially secured by means of an axial securing element (not shown here in detail) of the hand tool 52.
  • the clamping unit 12 comprises a second clamping element 24 configured as a cylinder head screw 108.
  • the cylinder head screw 108 has a shaft 110 and a screw head 12.
  • the shaft 1 10 extends along the axial direction 16 through the hollow spindle 72 and engages with an external thread 1 14 of the shaft 1 10 in an internal thread 1 16 of the spindle nut 102 a.
  • the screw head 1 12 has an integrally formed actuation cover 1 18, so that an operator can grip the screw head 1 12 comfortably.
  • the actuation cover 1 18 in this case has a larger extent compared to the screw head 1 12 along a direction perpendicular to the axial direction 16.
  • the machining tool 14 When mounting the machining tool 14, the machining tool 14 is attached to the driving recesses 94 on the corresponding elevations 98 of the tool holder 70. Subsequently, the cylinder head screw 108 is introduced with the shaft 1 10 through a central opening of the processing tool 14 in the hollow spindle 72 and passed through the hollow spindle 72 until the external thread 1 14 engages with the internal thread 1 16 of the spindle nut 102. Between the screw head 1 12 and the machining tool 14, viewed along the axial direction 16, a washer 120 is arranged, which is provided as a clamping flange. An operator can by means of the operating cover 1 18, the cylinder head screw
  • the operating unit 18 has a Coupling mode for tensioning and / or relaxing the machining tool 14 by means of the operating lever 48 and a decoupling mode, in which the operating element designed as a lever 48 20 is decoupled from the clamping unit 12.
  • the operating unit 18 has to signal the
  • an operation mode display unit 122 ( Figure 1).
  • the operating mode display unit 122 signals to the operator by means of display means (not shown here) in which operating mode the operating unit 18 is located.
  • the display means may be formed by analog display means, such as a pointer or the like, and / or electronic display means, such as LEDs or an LC display, etc.
  • an incorrect operation can be prevented, in particular, a startup of the power tool 52 can be prevented in the event that the operating unit 18 is still in a coupling mode.
  • the operating mode display unit 122 in this case has an electronic unit (not shown here) which is electronically connected to the electric motor unit 56.
  • the electronics unit allows energization of the electric motor unit 56 only in the decoupling mode of the operating unit 18.
  • the hand tool 52 has only one control unit (not shown in detail here) provided for this purpose by means of a mechanical and / or electronic connection to the electric motor unit
  • the operating unit 18 For switching between the operating modes, the operating unit 18 comprises a switching unit 26, which has a switching element 28, which is provided for
  • the switching element 28 is designed as a movably mounted switching pin 164.
  • the coupling recess 30 is in this case arranged on the clamping element 22 designed as a spindle nut 102.
  • the spindle nut 102 has a coupling region 124, in which the coupling recess 30 is arranged.
  • the coupling region 124 is arranged in an assembled state of the spindle nut 102 on a side facing away from the tool holder 70 side of the spindle nut 102.
  • the coupling recess 30 is formed as a U-shaped recess in the coupling region 124.
  • the switching element 28 is mounted translationally movable in the form of operating lever 48 control element 20.
  • the operating lever 48 comprises a first operating-lever housing shell 132 and a second operating-lever housing shell 134, which are detachably connected to one another along a separating plane running essentially perpendicular to the pivoting axis 66.
  • the first control lever housing shell 132 and the second control lever housing shell 134 can be releasably connected together by means of a screw connection.
  • the switching unit 26 further comprises two operating elements 32, 34 which are mounted on the operating lever 48 and which are provided to actuate the switching element 28 (FIGS. 3 to 5).
  • the actuators 32, 34 are formed here as a slide switch 136, 138.
  • the slide switches 136, 138 viewed in a plane perpendicular to the axis of rotation 50 of the operating lever 48, have an at least substantially triangular configuration.
  • each have two zueinadner angled side surfaces 140; 142; 144; 146 of the sliding Switch 136, 138 a grooved surface, so that an operator can easily operate the slide switches 136, 138.
  • the actuating elements 32, 34 designed as slide switches 136, 138 are each mounted so as to be translationally movable in a switching recess 36, 38 of the operating element 20 designed as an operating lever 48.
  • the switching recesses 36, 38 are each arranged in a direction parallel to the axis of rotation 50 of the operating lever 48 side 148, 150 of the operating lever 48.
  • the shifting recesses 36, 38 are arranged in the first operating-lever housing shell 132, which in a mounted state of the operating lever 48 faces away from the hand-held power tool housing 54.
  • the switching unit 26 has a guide element 40 designed as a guide slide 152, which is movably mounted in the operating element 20 and which is intended to receive the switching element 28 (FIGS. 3 to 5).
  • the guide carriage 152 is disposed in the first operating lever housing shell 132.
  • the actuating elements 32, 34 formed as slide switches 136, 138 are formed integrally with a switching element receiving web 154 of the guide carriage 152.
  • the slide switches 136, 138 extend in an assembled state from the guide carriage 152 through the switching recesses 36, 38 therethrough.
  • the switching element receiving land 154 is provided to receive the switching element 28.
  • a movement path of the guide carriage 152 and thus the slide switch 136, 138 is limited in the direction of the coupling recesses 30, 126, 128, 130 and / or the spindle nut 102 by means of a concern of the guide carriage 152 on a formed as a stop stiffening rib 156 of the second control lever housing shell 134, the is in a mounted state of the operating lever 48 facing the power tool housing 54.
  • the movement distance of the guide carriage 152 and thus the slide switches 136, 138 in a direction away from the coupling recesses 30, 126, 128, 130 and / or the spindle nut 102 direction by means of a direct and / or indirect concern of the switching element receiving web 154 at another than Stop trained stiffening web 158 of the second control lever housing shell 134 limited.
  • the movement distance of the guide carriage 152 can be limited by means of abutment of the slide switches 136, 138 at edge regions of the shift recesses 36, 38. Trained as a switching pin 164 switching element 28 is movably mounted in an opening formed as a through hole 160 of the stiffening web 156 of the second operating lever housing shell 134.
  • the shift pin 164 is movably supported in an opening 162 formed as a through hole of the further stiffening web 158 of the second operating-lever housing shell 134.
  • the stiffening rib 156 and the further stiffening rib 158 engage the first control lever housing shell 132.
  • the connecting web 156 which faces the clamping nut 102 in an assembled state of the operating lever 48, rests against an inner surface of the first operating-lever housing shell 132 facing the second operating-lever housing shell 134.
  • the switching unit 26 has a spring element 42 designed as a compression spring 166, which is provided to bias the switching element 28 designed as a switching pin 164 in an operating mode of the operating unit 18 in the direction of the clamping element 22 designed as a clamping nut 102 (FIGS. 3 to 5).
  • the compression spring 166 is disposed on the shift pin 164.
  • An inner diameter of the helical compression spring 166 is greater than an outer diameter of the shift pin 164.
  • the compression spring 166 is arranged along a longitudinal extension of the shift pin 164 between a first clamping ring 168 of the switching unit 26 and the switching element receiving web 154 on the shift pin 164. A first end 172 of the compression spring 166 is thus supported on the first clamping ring 168.
  • the switching unit 26 further comprises a second clamping ring 170, which is intended to limit a movement of the switching pin 164 in the direction away from the clamping nut 102 direction.
  • the second clamping ring 170 rests against the further stiffening web 158 of the second operating lever housing shell 134 in a switching position of the switching unit 26 assigned to the decoupling mode of the operating unit 18.
  • the first clamping ring 168 and the second clamping ring 170 are arranged axially non-displaceable on the switching pin 164.
  • the shift pin 164 in this case has two grooves (not shown here), in which the first clamping ring 168 and the second clamping ring 170 are arranged.
  • the clamping rings 168, 170 by means of another, the expert appears to be reasonable means on the
  • the operating unit 18 further comprises a positioning unit 44, which has a positioning element 46 which is provided to fix the operating element 20 in an operating position in a rotationally fixed relative to the handheld power tool housing 54 (FIGS. 3 to 5).
  • the positioning element 46 is designed as a locking pin 178.
  • the locking pin 178 is movably mounted in the operating lever 48. In a parking position of the operating lever 48, the locking bolt 178 extends from an interior of the operating lever 48 through a recess 180 of the operating lever 48 into a locking recess (not shown in detail here) of the hand tool housing 54.
  • a longitudinal extent of the operating lever 48 extends at least substantially parallel to a longitudinal extension of the hand tool housing 54 ( Figures 6 and 7).
  • the locking pin 178 is actuated by means of a spring element 184 of the positioning unit 44.
  • the spring element 184 may be formed, for example, by a spring-loaded lever, etc.
  • the locking pin 178 is fixedly connected to one end of the spring element 184.
  • the spring element 184 is fixed to the guide carriage 152. A displacement of the guide carriage 152 thus causes a displacement of the spring element 184.
  • the locking pin 178 is biased in the recess 180 by a spring force of the spring member 184 along a direction away from the clamping nut 102 direction, so that the locking pin 178 in the park position due to Spring force is moved into the Arreti Lucassappelung.
  • the operating lever 48 is secured in the parking position against inadvertent rotation.
  • the positioning unit
  • latching elements (not shown here), which are integrally formed with the power tool housing 54 and which are intended to engage in the parking position in recesses (not shown here) of the operating lever 48 and / or clamp the operating lever 48 between them, so that unintentional twisting can be prevented.
  • Positioning unit 44 further comprises a leaf spring 182 formed as a securing element 186, which is intended to lock the guide carriage 152 in a decoupling mode of the operating unit 18 corresponding switching position.
  • the leaf spring 182 is fixed in the first operating lever housing shell 132. Further, the leaf spring 182 engages in the decoupling mode of Control unit 18 corresponding switching position in a recess (not shown here) of the guide carriage 152 a.
  • FIG. 3 shows the switching position of the switching unit 26 assigned to the decoupling mode of the operating unit 18.
  • the switching unit 26 is moved from the switching position shown in FIG. 3 by means of an actuation of the slide switches 136, 138 in FIG Direction of the clamping nut 102 shifted.
  • the slide valves 136, 138 are hereby moved in the switching recesses 36, 38 in the direction of the clamping nut 102.
  • the guide carriage 152 is also moved in the direction of the clamping nut 102 ( Figure 4).
  • the switching element receiving web 154 in this case compresses the compression spring 166.
  • the compression spring 166 thus exerts a spring force in the direction of the clamping nut 102 via the first clamping ring 168 on the switching pin 164.
  • the shift pin 164 is biased as a result in the direction of the clamping nut 102. If one of the coupling recesses 30, 126, 128, 130 positioned such that the switching pin 164 and one of the coupling recesses 30, 126, 128, 130 are arranged in a line, the switching pin 164 is due to the bias by means of the compression spring 166 in one of the coupling recesses 30, 126, 128, 130 moves (Figure 5).
  • the Operating lever 48 are rotated about the axis of rotation 50 until one of the coupling Ausappelugen 30, 126, 128, 130 and the switching pin 164 are arranged in a line. After an engagement of the shift pin 164 in one of the coupling recesses 30, 126, 128, 130 of the operating lever 48 is rotatably coupled to the clamping nut 102.
  • An operator can actuate the clamping unit 12 by means of a rotary movement of the operating lever 48 about the axis of rotation 50 and thus clamp and / or release the machining tool 14 in the axial direction 16 (FIG. 8).
  • the machining tool 14 is seen during a rotation of the operating lever 48, viewed from the operating lever 48 in the direction of the machining tool 14, tightened clockwise by the clamping unit 12 and released in a counterclockwise rotation of the operating lever 48.
  • the actuators 32, 34 starting from the coupling mode of the operating unit 18 associated switching position of the switching unit 26 ( Figure 5) in the switching recesses 36, 38 along a direction moves away from the clamping nut 102 directed is.
  • the guide carriage 152 is also moved along the direction which is directed away from the clamping nut 102 by means of the integral configuration of the actuating elements 32, 34 designed as slide switches 136, 138.
  • the Heidelbergelementamsteg 154 moves the switching pin 164 by means of a concern on the second clamping ring 170 as a result of the displacement also away from the clamping nut 102.
  • the switching pin 164 thus disengages one of the coupling recesses 30, 126, 128, 130, in which the switching pin 164 in the coupling mode the control unit 18 has intervened.
  • the guide carriage 152 can be moved along the direction away from the clamping nut 102 direction until the second clamping ring 170 of the switching pin 164 abuts the further stiffening web 158 of the second Whyhe- belgepuruseschale 134.
  • the locking pin 178 is pushed by means of the spring element 184 into the recess 180 so that the locking pin 178 extends through the recess 180 and upon reaching the locking recess of the power tool housing 54, for example due to rotation of the operating lever 48 in the parking position in the locking recess of the power tool housing 54 engages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Portable Power Tools In General (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

L'invention concerne un dispositif de serrage de machine-outil portative, en particulier un dispositif de serrage de machine-outil portative oscillante, comportant au moins une unité de serrage (12) permettant de fixer un outil d'usinage (14) dans une direction axiale (16), et au moins une unité de commande (18) qui comprend au moins un élément de commande (20) pour actionner l'unité de serrage (12), cet élément de commande pouvant s'accoupler, au moins dans un mode de commande, avec au moins un élément de serrage (22, 24) monté rotatif de l'unité de serrage (12). Selon l'invention, l'unité de commande (18) comporte au moins une unité de commutation (26) qui comporte au moins un élément de commutation (28) conçu pour venir se loger dans au moins un évidement d'accouplement (30) de l'unité de commutation (26) afin de permettre l'accouplement de l'élément de commande (20) avec l'élément de serrage (22).
PCT/EP2011/073898 2010-12-30 2011-12-23 Dispositif de serrage de machine-outil portative WO2012089636A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010064371.8 2010-12-30
DE102010064371.8A DE102010064371B4 (de) 2010-12-30 2010-12-30 Handwerkzeugmaschinenspannvorrichtung mit Schaltelement

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US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories

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DE102017216015A1 (de) * 2017-09-12 2019-03-14 Robert Bosch Gmbh Handwerkzeugmaschine

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EP0152564A2 (fr) * 1984-02-18 1985-08-28 C. & E. FEIN GmbH & Co. Fixation d'outil
DE3523746A1 (de) * 1985-07-03 1987-01-08 Metabowerke Kg Schnellspannvorrichtung fuer rotierende scheibenfoermige werkzeuge
US5718621A (en) * 1996-09-11 1998-02-17 Turley; Edward Michael Reversible angle grinder with top arbour lock
EP1182019A1 (fr) * 2000-08-17 2002-02-27 HILTI Aktiengesellschaft Outil électrique avec dispositif pour le serrage rapide d'un outil
US20080014844A1 (en) * 2006-07-17 2008-01-17 James Matthew Pontieri Power tool with spindle lock

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DE4235244A1 (de) 1992-10-20 1994-04-21 Bosch Gmbh Robert Spannvorrichtung für eine spanende Handwerkzeugmaschine, insbesondere Motorfeile

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EP0152564A2 (fr) * 1984-02-18 1985-08-28 C. & E. FEIN GmbH & Co. Fixation d'outil
DE3523746A1 (de) * 1985-07-03 1987-01-08 Metabowerke Kg Schnellspannvorrichtung fuer rotierende scheibenfoermige werkzeuge
US5718621A (en) * 1996-09-11 1998-02-17 Turley; Edward Michael Reversible angle grinder with top arbour lock
EP1182019A1 (fr) * 2000-08-17 2002-02-27 HILTI Aktiengesellschaft Outil électrique avec dispositif pour le serrage rapide d'un outil
US20080014844A1 (en) * 2006-07-17 2008-01-17 James Matthew Pontieri Power tool with spindle lock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories

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DE102010064371A1 (de) 2012-07-05

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