EP3875224A1 - Dispositif de réglage d'un ciseau - Google Patents

Dispositif de réglage d'un ciseau Download PDF

Info

Publication number
EP3875224A1
EP3875224A1 EP20160651.4A EP20160651A EP3875224A1 EP 3875224 A1 EP3875224 A1 EP 3875224A1 EP 20160651 A EP20160651 A EP 20160651A EP 3875224 A1 EP3875224 A1 EP 3875224A1
Authority
EP
European Patent Office
Prior art keywords
coupling element
rotation
mechanism housing
connecting device
tool
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.)
Withdrawn
Application number
EP20160651.4A
Other languages
German (de)
English (en)
Inventor
Daniel Seltmann
Josef Fünfer
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP20160651.4A priority Critical patent/EP3875224A1/fr
Priority to CN202180010539.3A priority patent/CN114981040A/zh
Priority to EP21706005.2A priority patent/EP4114616A1/fr
Priority to PCT/EP2021/054419 priority patent/WO2021175657A1/fr
Priority to US17/800,556 priority patent/US12023793B2/en
Publication of EP3875224A1 publication Critical patent/EP3875224A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/20—Devices for cleaning or cooling tool or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/045—Cams used in percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/121—Housing details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/231—Sleeve details

Definitions

  • the chisel In order to counteract such uneven wear of a chisel, the chisel must be rotated about its longitudinal axis at regular time intervals. To do this, the chisel must either be removed from the corresponding tool holder, rotated and then reinserted into the tool holder.
  • chisel hammers are known from the prior art which already have a device for rotating the tool holder including the chisel without the chisel having to be removed from the chisel hammer.
  • a machine tool in particular a chipping hammer, containing a tool receiving element for receiving and holding a tool, in particular a chisel, and a device for optionally rotating the tool receiving element.
  • the device has a hammer mechanism housing with a connecting device, a coupling element with a connecting device, and a decoupling element for reversible separation of the coupling element from the Contains hammer mechanism housing, the coupling element being reversibly adjustable in a first or second position, and wherein in the first position the coupling element is releasably connected to the hammer mechanism housing, so that rotation of the tool receiving element about an axis of rotation is prevented and in the second position the coupling element is relative to the hammer mechanism housing is movable so that the tool receiving element is rotatable relative to the hammer mechanism housing about an axis of rotation.
  • the hammer mechanism housing may contain a connecting device and the coupling element to contain a connecting device corresponding to the connecting device, so that the coupling element is releasably connected to the hammer mechanism housing by reversibly connecting the connecting device to the connecting device.
  • both the connecting device and the corresponding connecting device may be designed in the form of a toothing.
  • a non-rotatable form fit between the connecting device and the connecting device with a large number of setting and orientation options is provided in a simple manner.
  • a thread device is included between the decoupling element and the coupling element, so that by rotating the decoupling element about the axis of rotation, the coupling element is moved at least so far in an axial direction that the connecting device and connecting device from each other separated and the coupling element can be rotated together with the tool receiving element relative to the hammer mechanism housing.
  • the actuating cap may contain at least one holding sleeve and an unlocking sleeve, the unlocking sleeve being rotatable relative to the holding sleeve about the axis of rotation and the unlocking sleeve being non-rotatably connected to the decoupling element, so that by turning the unlocking sleeve the axis of rotation and the decoupling element is rotated about the axis of rotation.
  • the actuation cap may contain at least one ventilation channel through which an air stream for cooling the inner volume of the actuation cap can flow in an axial direction. In this way, almost optimal cooling in the interior of the actuation cap and the components positioned in the interior of the actuation cap can be achieved.
  • Figure 1 shows a front portion of a machine tool 1.
  • the machine tool is designed in the form of a chipping hammer.
  • the machine tool 1 it is also possible for the machine tool 1 to be designed in the form of a combination hammer.
  • the machine tool 1 designed as a chipping hammer essentially contains a machine tool housing 2, a tool receiving device 50 and a handle.
  • the machine tool housing 2 includes a front end 2a and a rear end. In the figures, only part of the machine tool housing 2 and the front end 2a are shown.
  • the handle is located at a rear end of the machine tool housing 2 and is used to hold and guide the machine tool 1. The rear end of the machine tool housing 2 and the handle are not shown in the figures.
  • the coupling element 15 is in the Figures 4 to 9 shown and designed essentially as a cylindrical sleeve or as a hollow cylinder.
  • the coupling element 15 can also be referred to as a coupling sleeve and contains a front end 15a and a rear end 15b.
  • a rotation lock 19 is contained at the front end 15a of the coupling element 15.
  • the rotation lock 19 in turn contains a number of axially aligned depressions 15c, cf. Figure 4 .
  • the recesses 15c are positioned circumferentially around the outer jacket surface of the front end 15a of the coupling element 15 at regular intervals.
  • the anti-rotation device 19 with the depressions 15c is used for the non-rotatable connection with the actuation cap 13.
  • the actuation cap 13 contains a plurality of elongated elevations 20 on an inner lateral surface, which are arranged at regular intervals and extend in the axial direction M, N.
  • a non-rotatable connection between the coupling element 15 and the actuating cap 13 is achieved by a form fit when the elongated elevations 20 of the actuating cap 13 engage in the elongated recesses 15c of the coupling element 15, cf. Figure 17 .
  • the depressions 15c in the form of axially extending slots or grooves, the coupling element 15 can be moved in the axial direction M, N relative to the actuation cap 13 when the coupling element 15 and the actuation cap 13 are connected to one another.
  • the coupling element 15 can, however, be moved in the assembled or mounted state with the tool receiving element 3 in the axial direction relative to the tool receiving element 3.
  • the central recess 25 of the coupling element 15 is octagonal.
  • the central recess 25 of the coupling element 15 has a different polygonal (ie polygonal) shape.
  • the coupling element 15 together with the decoupling element 16 form a thread device 60, since a linear stroke or a linear movement in direction M is generated by rotating the coupling element 15 relative to the decoupling element 16.
  • the inner diameter D16 of the decoupling element 16 is slightly larger than the outer diameter D15 of the coupling element 15, so that in an assembled state the coupling element 15 can be inserted into the inner volume of the decoupling element 16, cf. Figure 13 and 17th .
  • the first, second and third sections 13a, 13b, 13c can be releasably connected to one another.
  • the actuating cap 13 may contain at least one holding sleeve and one unlocking sleeve.
  • the holding sleeve essentially corresponds to the first and second cylindrical sections 13a, 13b according to the first embodiment of the actuating cap 13, the first and second sections 13a, 13b being connected to one another.
  • the unlocking sleeve corresponds essentially to the third cylindrical section 13c according to the first embodiment of the actuating cap 13.
  • the unlocking sleeve can be rotated relative to the holding sleeve about the axis of rotation Q in the direction of rotation R.
  • the coupling element 15 is first positioned in the decoupling element 16 in such a way that the contact surface 28a of each bevel 28 of the elevation 27 of the decoupling element 16 on the respective contact surface 22a of the shoulders of the elevation 22 of the coupling element 15 is applied, cf. Figure 12 , 13th , 14th , 15th and 17th . Because the contact surfaces 28a of the chamfers 28 lie on top of one another on the contact surface 22a of the elevation 22, a force can be transmitted in the axial direction M from the decoupling element 16 to the coupling element 15.
  • the decoupling element 16 is connected to the striking mechanism housing 6 in such a way that the toothing or teeth of the connecting device 11 of the striking mechanism housing 6 are connected to the toothing or teeth of the connecting device 23 of the coupling element 15, so that a non-rotatable connection between the striking mechanism housing 6 and coupling element 15 is when the hammer mechanism housing 6 and the coupling element 15 are arranged at a certain axial distance from one another.
  • the striking mechanism housing 6 and the coupling element 15 are shown at a first axial distance from one another, so that there is a toothing or releasable connection between the connecting device 11 of the striking mechanism housing 6 and the connecting device 23 of the coupling element 15.
  • the coupling element 15 is also positioned non-rotatably inside the machine tool housing 2 of the machine tool 1 when there is a non-rotatable connection between the connecting device 11 of the hammer mechanism housing 6 and the connecting device 23 of the coupling element 15 exists.
  • the coupling element 15, the decoupling element 16, the tool receiving element 3, the front end 6a of the hammer mechanism housing 6 are positioned inside the actuating cap 13.
  • a pressure element 30 and a compression spring element 31 are also contained in the interior of the actuation cap 13.
  • the pressure element 30 is located at an axial distance in the axial direction M in front of the coupling element 15.
  • the compression spring element 31 is positioned between the pressure element 30 and the coupling element 15 that the spring force of the compression spring element 31 acts between the pressure element 30 and the coupling element 15 and thus the pressure element 30 and the coupling element 15 press apart in the axial direction M, N.
  • the coupling element 15 is pressed in the axial direction N onto the decoupling element 16.
  • the decoupling element 16 is positioned in the actuation cap 13 in such a way that the longitudinal web pairs 29 on the third section 13c of the actuation cap 13 engage in the recesses on the outer surface of the decoupling element 16, cf. Figure 15 .
  • the coupling element 15 is positioned in the actuation cap 13 that the elongated elevations 20 of the second section 13b of the actuation cap 13 are in engagement with the recesses 15c at the front end 15a of the coupling element 15, so that a rotationally fixed, but in the axial direction M, N movable connection between the actuating cap 13 and the coupling element 15 is given.
  • FIG 23 As can be seen, a non-rotatable or form-fitting connection remains in the area X between the coupling element 15 and the tool receiving element 3, even if the coupling element 15 and the hammer mechanism housing 6 are no longer non-rotatably connected.
  • Figure 21 shows the connecting device 11 of the hammer mechanism housing 6 and the connecting device 23 of the coupling element 15 shown in a state in which the connecting device 11 and the connecting device 23 are already at a certain axial distance from one another, but there is still no complete separation of the toothing connecting device 11 and the connecting device 23 .
  • the coupling element 15 is rotated by an amount about the axis of rotation Q in the direction of rotation R.
  • Figure 22 shows the connecting device 11 and the connecting device 23 spaced further apart in the axial direction M at a greater axial distance from one another than in FIG Figure 21 .
  • the coupling element 15 is in Figure 22 rotated by a further amount about the axis of rotation Q in the direction of rotation R.
  • the respective tips of the teeth of the toothing of the connecting device 11 and of the connecting device 23 are almost directly opposite one another.
  • the coupling element 15 presses in the axial direction M, N against the compression spring element 31, so that the compression spring element 31 is compressed or compressed by a certain amount.
  • the spring force of the compression spring element 31 is in the axial direction N against the coupling element 15.
  • the coupling element 15 is rotated further in the direction of rotation R about the axis of rotation Q with the aid of the decoupling element 16, the tips of the teeth of the connecting device 11 and the connecting device 23 are no longer aligned opposite, so that by the spring force of the compression spring element 31, the coupling element 15 is brought into a new orientation rotated about the axis of rotation Q relative to the hammer mechanism housing 6.
  • the coupling element 15 and the tool receiving element 3, which is connected non-rotatably to the coupling element 15, together with the tool 5 located in the tool receiving element 3 are now rotated around the axis of rotation Q relative to the hammer mechanism housing 6, so that consequently the tool 5 designed as a chisel is in a different orientation to the machine tool 1 is positioned.
  • the first outflow opening 43 represents the end of the first ventilation channel 41 and the second outflow opening 44 represents the end of the second ventilation channel 42 only a single ventilation channel and thus only a single outflow opening.
  • the embodiment of the actuation cap in the form of only a single component is not shown in the figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP20160651.4A 2020-03-03 2020-03-03 Dispositif de réglage d'un ciseau Withdrawn EP3875224A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20160651.4A EP3875224A1 (fr) 2020-03-03 2020-03-03 Dispositif de réglage d'un ciseau
CN202180010539.3A CN114981040A (zh) 2020-03-03 2021-02-23 用于调整凿刀的设备
EP21706005.2A EP4114616A1 (fr) 2020-03-03 2021-02-23 Dispositif de réinitialisation de burin
PCT/EP2021/054419 WO2021175657A1 (fr) 2020-03-03 2021-02-23 Dispositif de réinitialisation de burin
US17/800,556 US12023793B2 (en) 2020-03-03 2021-02-23 Apparatus for adjusting a chisel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20160651.4A EP3875224A1 (fr) 2020-03-03 2020-03-03 Dispositif de réglage d'un ciseau

Publications (1)

Publication Number Publication Date
EP3875224A1 true EP3875224A1 (fr) 2021-09-08

Family

ID=69770464

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20160651.4A Withdrawn EP3875224A1 (fr) 2020-03-03 2020-03-03 Dispositif de réglage d'un ciseau
EP21706005.2A Pending EP4114616A1 (fr) 2020-03-03 2021-02-23 Dispositif de réinitialisation de burin

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21706005.2A Pending EP4114616A1 (fr) 2020-03-03 2021-02-23 Dispositif de réinitialisation de burin

Country Status (3)

Country Link
EP (2) EP3875224A1 (fr)
CN (1) CN114981040A (fr)
WO (1) WO2021175657A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4324598A1 (fr) * 2022-08-18 2024-02-21 Hilti Aktiengesellschaft Dispositif de raccordement d'outil pour un marteau perforateur ou burineur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216050A1 (fr) * 1973-02-02 1974-08-30 Rockwell International Corp
EP2314419A1 (fr) * 2009-10-21 2011-04-27 Metabowerke GmbH Machine-outil électrique
EP2821183A1 (fr) * 2013-07-05 2015-01-07 Black & Decker Inc. Marteau perforateur
EP2871029A1 (fr) * 2013-11-09 2015-05-13 Illinois Tool Works Inc. Procédé pour faire fonctionner une machine-outil portative

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216050A1 (fr) * 1973-02-02 1974-08-30 Rockwell International Corp
EP2314419A1 (fr) * 2009-10-21 2011-04-27 Metabowerke GmbH Machine-outil électrique
EP2821183A1 (fr) * 2013-07-05 2015-01-07 Black & Decker Inc. Marteau perforateur
EP2871029A1 (fr) * 2013-11-09 2015-05-13 Illinois Tool Works Inc. Procédé pour faire fonctionner une machine-outil portative

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4324598A1 (fr) * 2022-08-18 2024-02-21 Hilti Aktiengesellschaft Dispositif de raccordement d'outil pour un marteau perforateur ou burineur

Also Published As

Publication number Publication date
WO2021175657A1 (fr) 2021-09-10
CN114981040A (zh) 2022-08-30
US20230086336A1 (en) 2023-03-23
EP4114616A1 (fr) 2023-01-11

Similar Documents

Publication Publication Date Title
EP0880426B1 (fr) Porte-outil pour outils d'insertion sur machines travaillant par perforation et/ou percussion
DE4205259C2 (de) Einrichtung zum Werkzeugwechsel an einer handgeführten Werkzeugmaschine
DE2165066C3 (fr)
DE3416964C2 (de) Spannfutter für ein Werkzeug, insbes. zum Schlagbohren
EP0171358A2 (fr) Outil de forage pour perceuses à main
DE4026415A1 (de) Schnell loesbare haltevorrichtung fuer eine bohrerspitze
CH688404A5 (de) Werkzeughalter.
EP0141903A1 (fr) Perceuse à percussion
EP4114616A1 (fr) Dispositif de réinitialisation de burin
DE3604927C2 (de) Bohrfutter
DE102010006918A1 (de) Verbindungssystem zum lösbaren Verbinden zweier Bauteile
EP0194426A1 (fr) Mandrin pour forage rotatif ou à percussion rotative
DE3729796A1 (de) Hydraulischer oder pneumatischer mutternsprenger
DE3241746A1 (de) Vorrichtung zum kuppeln einer bohrstange fuer schachtofenabstichloecher mit dem arbeitswerkzeug einer bohrmaschine
WO1993022091A1 (fr) Mandrin de serrage
EP0717666B1 (fr) Porte-brosse reglable en continu
DE3590297T (de) Schlagend arbeitende Druckluft-Reversiervorrichtung
EP2205384B1 (fr) Système d'outil
CH666650A5 (de) Halterung an bohrhaemmern oder schlagbohrmaschinen.
DE10360008B4 (de) Vorrichtung für einen Bohr- oder Schlaghammer mit Werkzeugaufnahme
EP0179232B1 (fr) Mandrin à mâchoires
EP3268164A1 (fr) Nervure d'entraînement dans un raccordement d'outil
DE2638243A1 (de) Honwerkzeug
DE3124619C2 (de) Schlagbohrmaschine
DE2752544C2 (de) Schlagbohrspitze

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220310