EP3269503A1 - Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil - Google Patents

Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil Download PDF

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Publication number
EP3269503A1
EP3269503A1 EP16179674.3A EP16179674A EP3269503A1 EP 3269503 A1 EP3269503 A1 EP 3269503A1 EP 16179674 A EP16179674 A EP 16179674A EP 3269503 A1 EP3269503 A1 EP 3269503A1
Authority
EP
European Patent Office
Prior art keywords
side wall
tool
machine tool
recess
hood
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.)
Pending
Application number
EP16179674.3A
Other languages
German (de)
English (en)
Inventor
Oliver Ohlendorf
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 EP16179674.3A priority Critical patent/EP3269503A1/fr
Publication of EP3269503A1 publication Critical patent/EP3269503A1/fr
Pending legal-status Critical Current

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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
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • B24B27/08—Grinders for cutting-off being portable
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • the present invention relates to a suction hood for a machine tool with a rotating tool, in particular a grinding or cutting tool, for collecting and diverting generated dust when using the machine tool, a first side wall with a first straight side edge, a second side wall with a second straight side edge, as well as connected to the first and second side wall suction channel.
  • the rotating tool may be, for example, a cutting wheel or grinding wheel.
  • the extractor hood can also be referred to as a dust hood or protective hood.
  • the tool change i. the release of the tool from a spindle of the machine tool and the re-attachment of the tool to the spindle can be complicated and expensive for the user of the machine tool.
  • the object of the present invention is therefore to solve the above-mentioned problem and, in particular, to provide an improved suction hood for a machine tool with a rotating tool, in particular a grinding or cutting tool, with which the replacement of a tool, e.g. Grinding or cutting disc, is facilitated.
  • the object is achieved by providing a suction hood for a machine tool with a rotating tool, in particular a grinding or cutting tool, for collecting and discharging when using the machine tool containing generated dust, a first side wall having a first straight side edge, a second side wall having a second straight side edge, and connected to the first and second side wall suction channel.
  • the first side wall is reversibly mounted pivotably between a first position and a second position, wherein in the first position the suction hood is in a closed state, so that an almost closed cavity between the first side wall and the second side wall for receiving of the tool, and wherein in the second position, the suction hood is in an open state, so that the tool is removable from the machine tool.
  • the suction hood in a state in which the suction hood is attached to the machine tool, the suction hood can be opened in a simple manner and closed again in order to change the tool.
  • a hinge may be provided on the first straight side edge of the first side wall and on the second straight side edge of the second side wall, with which the first side wall is reversibly pivotable between the first position and the second position is.
  • the first side wall can be stably fixed to the suction channel and the mobility between the first and second position can be ensured.
  • the hinge is designed in the form of a film hinge.
  • the hinge has at least one component consisting of an elastomer.
  • the first side wall may include a first recess and the second side wall for a second recess, the first recess having a diameter greater than the diameter of a tensioning element which is for releasably securing the tool is used on a spindle of the machine tool, so that in the first position of the first side wall, the first recess is positionable about the clamping element, and wherein the second recess has a diameter which is greater than the diameter of a flange of the machine tool, so that the second recess can be positioned around the flange.
  • the clamping element such as a clamping nut
  • the spindle of the machine tool eg screwed
  • the first side wall is in the first position and on the other hand, the tool (eg grinding or cutting disc) already in the dust hood.
  • the dust cover can thus be complete with the one located in the dust cover Tool can be easily and quickly attached both from the machine tool and mounted on the machine tool.
  • the first and second side walls when the first side wall is in the first position, it may be possible for the first and second side walls to be positioned at a distance shorter than the length of the spindle. As a result, the attachment of the clamping element on the spindle of the machine tool is additionally facilitated if the dust hood is positioned with the tool located in the dust hood on the machine tool and the first side wall is in the first position.
  • a depth stop device may be provided on the first side wall. As a result, there is a space-saving possibility for attaching the depth stop device to the machine tool.
  • Fig. 1 shows a suction hood 1 according to the invention for a machine tool 2.
  • the suction hood 1 can also be referred to as a dust hood.
  • the machine tool 2 is an angle grinder.
  • the machine tool 2 includes a housing 3, a connected to the housing 3 battery 4 as a power supply, a head 5 with a tool holder 6.
  • the tool holder 6 includes a flange 7, a spindle 8 and a clamping element 9.
  • the clamping element 9 can in the direction R. be removed from the spindle 8.
  • the spindle 8 is used for fastening a tool 10, for example a grinding or cutting disc, as well as for transmitting a torque to the tool 10.
  • the spindle 8 has a length L.
  • Fig. 2 is the machine tool 2 with a tool 10, such as a grinding or cutting disc, and without the suction hood 1 shown.
  • FIG. 3 is the machine tool 2 with a suction hood 1, the tool 10 and the clamping element 9 shown in a disassembled state.
  • FIG. 4 is the machine tool 2 shown with a suction hood 1, the tool 10 and the clamping element 9 in an assembled state.
  • the tool 10 includes a central through hole 10 a and can be attached to this by means of a clamping element 9 on the spindle 8.
  • the tool 10 has a width B.
  • the clamping element 9 is shown in the figures as a clamping nut and can be screwed onto the spindle 8.
  • the spindle 8 is rotatably connected by means of a flange 7 on the head 5 of the machine tool 2.
  • the flange 7 is positioned in the direction of arrow R below the spindle 8 on the head 5 of the machine tool 2.
  • the suction hood 1 essentially comprises a first side wall 11, a second side wall 12 and a suction channel 13.
  • the first and second side edges 11, 12 are to be detachably connected to one another again by means of a closure mechanism 14.
  • the closure mechanism 14 is designed essentially as a snap closure.
  • the first side wall 11 essentially comprises a first curved side edge 16, a first straight side edge 21, a first bottom edge 17, a channel section 18 and a first recess 19.
  • the first straight side edge 21 is adjacent to the channel section 18.
  • the shutter mechanism 14 is positioned.
  • the shutter mechanism 14 includes a latch 14a.
  • the latch 14a is designed to be movable and can engage the second side wall 12 in order to detachably connect the first and second side walls 11, 12 to one another again.
  • the channel portion 18 forms part of the suction channel 13.
  • the first side wall 11 is pivotally mounted on the suction hood 1 about the axis of rotation D, so that the first side wall 11 can reversibly occupy a first position and a second position.
  • the exhaust hood 1 is almost closed and the first and second side wall 11, 12 are substantially parallel to each other.
  • the first side wall 11 is pivoted away from the second side wall 12, so that the suction hood 1 is opened and access to the inner sides of the two side walls 11, 12 is made possible.
  • the tool 10 can be removed from the machine tool 10 and from the suction hood 1.
  • the second side wall 12 essentially includes a second curved side edge 25, a second straight side edge 22, a second bottom edge 26 and a second recess 28.
  • first side wall 11 includes at the first curved side edge 16 a first web 29.
  • the first web 29 extends almost along the entire first curved side edge 16.
  • the second side wall 12 includes at the second curved side edge 25 a second web 30.
  • the second The web 30 extends almost along the entire second curved side edge 25.
  • the first and second bottom edge 17, 26 serve to guide the suction hood 1 along a workpiece to be machined.
  • the workpiece is not shown in the figures.
  • the second recess 28 of the second side wall 12 is larger than the diameter of the flange 7 of the machine tool, so that the second recess 28 can be positioned around the flange 7.
  • the diameter of the second recess 28 and the diameter of the flange 7 are dimensioned so that the second recess 28 can be applied accurately to the flange 7.
  • the first recess 19 of the first side wall 11 is larger than the diameter of the clamping element designed as a clamping nut 9, so that the clamping nut 9 can be received in the first recess 19. It is also possible that the diameter of the first recess 19 is only slightly larger than the diameter of the clamping nut 9, so that the first recess 19 rests as closely as possible around the clamping nut 9.
  • the suction channel 13 essentially comprises a cylindrical shaft 31 having a first end 31 a and a second end 31 b.
  • the first end 31 a forms with the first and second bottom edge 17, 26 a common plane.
  • a hose can be attached, which in turn is connected to a vacuum cleaner. Neither the hose nor the vacuum cleaner are shown in the figures.
  • the shaft 31 essentially contains an upper portion 32 and a lower portion 33.
  • the upper portion 32 is designed as a solid tube and is positioned in the direction of arrow P over the first and second side walls 11, 12.
  • the lower portion 33 of the shaft 31 is designed as a two-part tube.
  • the lower portion 33 is formed by the first and second side walls 11, 12.
  • the channel portion 18 of the first side wall 11 is concave to the inside of the first and second side wall 11, 12, so that between the first and second side wall 11, 12, the lower portion 33 of the shaft 31 is formed when the first side wall 11 in the first Position is located.
  • a hinge 20 is positioned at the first straight side edge 21 of the first side wall 11 and at the second straight side edge 22 of the second side wall 12, a hinge 20 is positioned.
  • the hinge 20 extends along the first and second straight side edges 21, 22 and is arranged opposite to the direction of the arrow P below the lower portion 33 of the shaft 31.
  • the hinge 20 is a mechanical hinge.
  • the hinge 20 is designed as a film hinge.
  • the first and second sidewalls 11, 12 are made of a first material (e.g., polyamide) and the hinge 20 is made of a second material.
  • the second material may be a softer material than the first material.
  • the second material may be an elastomer.
  • a cavity is formed between the first and second side walls 11, 12. This cavity is opened at the first and second bottom edges 17, 26. Inside the suction channel 13, a cavity is also formed. The cavity between the two side walls 11, 12 and the cavity in the interior of the suction channel 13 are interconnected. Due to the connection of the cavities, dust which arises during the machining of a workpiece by the tool 10 can be conducted between the two side walls 11, 12 and into the shaft of the suction channel 13, when a vacuum cleaner is connected to the suction hood 1.
  • a depth stop device 34 is provided on the first side wall 11 (cf. Fig. 1 ).
  • the depth stopper 34 basically includes a bent depth stop member 35 and serves to adjust the machining depth of the tool 10 into the workpiece to be machined.
  • the depth stop member 35 is reversibly slidably positioned on the first curved side edge 16 of the first side wall 11. By moving in the direction P, the depth stop member 35 is pushed away from the side walls 11, 12, so that the lower end of the depth stop member 35 protrudes below the two side walls 11, 12 (see. Fig. 5 ). By protruding the lower end of the depth stop member 35 below the two side walls 11, 12, the distance of a surface of a workpiece to the first and second bottom edge 17, 26 can be increased. As a result, the tool 10 dives less deep into the workpiece.
  • the depth stop device 34 is positioned on the first side wall 11 such that it can be moved together with the first side wall 11 from the first position to the second position.
  • the first side wall 11 can be reversibly moved relative to the second side wall 12 by means of the hinge 20 about the rotation axis D from a first position to a second position. Both in the first and in the second position, the clamping element 9 designed as a clamping nut can be accessed.
  • the clamping element 9 can be operated by the first recess 19 or be positioned by the spindle 8 or on the spindle 8. It is also possible that the clamping element 9 can be removed through the first recess 19 when the first side wall 11 is in the first position.
  • the clamping element 9 When the first side wall 11 is in the second position, the clamping element 9 can be released from the spindle 8 and taken in the direction R of the spindle 8. When the clamping element 9 is removed from the spindle 8 and in the direction R, designed as a cutting wheel tool 10 can be taken from the spindle 8 in the direction R.
  • the cutting disc 10 is positioned on spindle 8 and the clamping nut 9 is mounted on the spindle 8.
  • the clamping nut 9 By the clamping nut 9, the cutting disc 10 is rotatably mounted on the spindle 8 and thus on the machine tool 2.
  • the first side wall 11 is moved from the second position to the first position.
  • the shutter mechanism 14 closes the first side wall with the second side wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP16179674.3A 2016-07-15 2016-07-15 Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil Pending EP3269503A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16179674.3A EP3269503A1 (fr) 2016-07-15 2016-07-15 Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16179674.3A EP3269503A1 (fr) 2016-07-15 2016-07-15 Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil

Publications (1)

Publication Number Publication Date
EP3269503A1 true EP3269503A1 (fr) 2018-01-17

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ID=56413565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16179674.3A Pending EP3269503A1 (fr) 2016-07-15 2016-07-15 Capot d'aspiration comprenant une ouverture radiale d'insertion d'outil

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EP (1) EP3269503A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022205094A1 (de) 2022-05-23 2023-11-23 Robert Bosch Gesellschaft mit beschränkter Haftung Werkzeugmaschinenvorrichtung, Werkzeugmaschine und System

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842908A (en) * 1957-03-29 1958-07-15 American Chain & Cable Co Abrasive cutting wheel mounting and guard
US3661045A (en) * 1970-09-17 1972-05-09 Tyco Lab Apparatus for stabilizing a rotary saw blade
DE9208149U1 (de) * 1992-06-17 1992-09-03 Lin, Dar-Jong, Yang-Mei Cheng, Taoyuan Gehäusedeckel für eine Schleifscheibe
US5531147A (en) * 1993-11-23 1996-07-02 Alpine Engineered Products, Inc. Saw guard
EP1967310A1 (fr) * 2007-03-07 2008-09-10 Mafell AG Scie circulaire à main
EP2915639A1 (fr) * 2014-03-04 2015-09-09 Eberhard Berhalter Dispositif de machines-outils
EP2965865A2 (fr) * 2014-07-11 2016-01-13 Festool GmbH Appareil de séparation manuel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842908A (en) * 1957-03-29 1958-07-15 American Chain & Cable Co Abrasive cutting wheel mounting and guard
US3661045A (en) * 1970-09-17 1972-05-09 Tyco Lab Apparatus for stabilizing a rotary saw blade
DE9208149U1 (de) * 1992-06-17 1992-09-03 Lin, Dar-Jong, Yang-Mei Cheng, Taoyuan Gehäusedeckel für eine Schleifscheibe
US5531147A (en) * 1993-11-23 1996-07-02 Alpine Engineered Products, Inc. Saw guard
EP1967310A1 (fr) * 2007-03-07 2008-09-10 Mafell AG Scie circulaire à main
EP2915639A1 (fr) * 2014-03-04 2015-09-09 Eberhard Berhalter Dispositif de machines-outils
EP2965865A2 (fr) * 2014-07-11 2016-01-13 Festool GmbH Appareil de séparation manuel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022205094A1 (de) 2022-05-23 2023-11-23 Robert Bosch Gesellschaft mit beschränkter Haftung Werkzeugmaschinenvorrichtung, Werkzeugmaschine und System

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