EP3542961A1 - Support pour produit abrasif - Google Patents

Support pour produit abrasif Download PDF

Info

Publication number
EP3542961A1
EP3542961A1 EP18163533.5A EP18163533A EP3542961A1 EP 3542961 A1 EP3542961 A1 EP 3542961A1 EP 18163533 A EP18163533 A EP 18163533A EP 3542961 A1 EP3542961 A1 EP 3542961A1
Authority
EP
European Patent Office
Prior art keywords
holding device
spoke
tool
holding
annular
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Withdrawn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
EP18163533.5A
Other languages
German (de)
English (en)
Inventor
Lionel Barbier
Bernhard Liebert
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 EP18163533.5A priority Critical patent/EP3542961A1/fr
Priority to PCT/EP2019/056263 priority patent/WO2019179847A1/fr
Publication of EP3542961A1 publication Critical patent/EP3542961A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the present invention relates to a holding device for a rotating annular tool, for example a grinding or cutting disc, comprising an annular holding element for releasably connecting the tool to the holding device and a connecting device for releasably connecting the holding device to a machine tool.
  • Holding devices which serve to attach a grinding or cutting disc to a machine tool, for example to an angle grinder, are known to the greatest possible extent from the prior art.
  • the object of the present invention is to solve the problem described above and to provide a holding device for a rotating annular tool, which in the simple manner accumulating dust and dirt particles, which can arise when using a corresponding machine tool, from the field of view and order keep the rotating tool away.
  • a holding device for a rotating annular tool such as a grinding or cutting wheel, containing an annular Retaining element for releasably connecting the tool with the holding device and a connection device for releasably connecting the holding device to a machine tool.
  • the holding device comprises at least one first and second spoke element for connecting the holding element to the connecting device, wherein in each case a passage opening is provided between the spoke elements.
  • the spoke element is designed to be radially bent in a circumferential direction. Due to the radially bent spokes, a vortex is generated during the rotation of the holding device, whereby the resulting dust and dirt particles can be better moved away from the holder device.
  • the length of the passage opening in a radial direction is shorter than the length of the annular holding element in a radial direction. In this way, a better suction effect on the surface of the holder device can be generated, whereby the removal of dust and dirt particles from the interior of the holder device can be optimized.
  • a recess may be provided on an inclined plane of the spoke element and for the recess to extend from a lower edge of the passage opening to the first end of the spoke element.
  • a better suction effect on the surface of the holder device can also be generated, whereby the removal of dust and dirt particles from the interior of the holder device can be optimized.
  • the total weight of the holding device reduced by the recess, the total weight of the holding device.
  • the vacuum cleaner according to the invention it may be possible that more than a first and second spoke element is included. As a result, the stability and strength of the holding device can be increased. According to an optimal embodiment, ten spoke elements are provided on the holding device.
  • a cross-sectional area of the spoke element may be substantially trapezoidal and tapered in the radial direction. In this way, a better suction effect on the surface of the holder device can be generated, whereby the removal of dust and dirt particles from the interior of the holder device can be optimized.
  • an angle between a first side plane and a second side plane between 20 ° to 120 ° and in particular 40 ° corresponds. In this way, a better suction effect on the surface of the holder device can be generated, whereby the removal of dust and dirt particles from the interior of the holder device can be optimized.
  • FIG. 1 shows a holding device 1 for a rotating annular tool 2, for example, a grinding or cutting disc. Below the holding device 1 in the direction of arrow M is in FIG. 1 a rotating tool 2 shown in the embodiment of a grinding wheel. The configured as a grinding wheel tool 2 can be releasably connected to the holding device 1.
  • the holding device 1 essentially comprises an annular holding element 3 for releasably connecting the tool 2 to the holding device 1 and a connection device 4 for releasably connecting the holding device 1 to a machine tool.
  • the machine tool is not shown in the figures, but can be configured as an angle grinder or orbital sander.
  • a hook and loop fastener between the support member 3 and the tool 2 is provided, for example.
  • the Velcro is indicated in the figures only.
  • connection device 4 is configured substantially in the form of an annular disc with a central, circular opening 5. Through the opening 5, a free end of a drive shaft of a machine tool can be guided and the holding device 1 with the machine tool, i. be connected to the drive shaft. With the aid of the connection device 4, a torque of the drive shaft can be transmitted to the annular tool 2.
  • the machine tool and the drive shaft are not shown in the figures.
  • the holding device 1 contains ten spoke elements 6.
  • the spoke element 6 is used to connect the holding member 3 with the connection device 4.
  • the spoke elements 6 are identical to each other and arranged at regular intervals to each other.
  • the radius R corresponds to the radius of the holding device 1, cf. FIG. 3 ,
  • spoke elements 6 are provided on the holding device 1.
  • spoke elements 6 are provided opposite.
  • Each spoke element 6 includes a first end 6a, a second end 6b, a top 6c, a bottom 6d, a first side plane 6e, and a second side plane 6f.
  • the first Side plane 6e and second side plane 6f may also be referred to as first and second side surfaces, respectively.
  • the passage opening 7 is designed substantially rectangular with rounded corners and is used for air flow LS, which arises during working below the rotating tool 2, to escape from the holding device 1. According to an alternative embodiment, the through hole 7, however, also have a different shape.
  • the passage opening 7 can be configured in almost all possible forms.
  • each spoke element 6 is designed radially bent in a circumferential direction U.
  • the direction of rotation U corresponds to a working direction of rotation of the tool 2.
  • Each spoke element 6 is bent such that an outer vertex 8a faces the arc 9 of each spoke element 6 in the direction of rotation U.
  • An inner vertex 8b on the arc 9 of each spoke element 6 is correspondingly opposite to the direction of rotation U.
  • a convexly configured first side plane 6e of each spoke element 6 points in the circumferential direction U.
  • a concavely configured second side plane 6f of each spoke element 6 faces counter to the direction of rotation U.
  • the first and second side planes 6e, 6f arranged at an acute angle ⁇ to each other.
  • the angle ⁇ between the first and second side planes 6e, 6f of each spoke member 6 is about 40 °.
  • the angle ⁇ is greater or less than 40 ° and in particular a value between 20 ° and 120 °.
  • the tilting of the two side planes 6e, 6f to each other serves a faster and better outflow of the air flow LS, which is generated while working with the tool disk 2 below the holding device 1, through the through holes 7. With the help of the air flow LS dust and dirt particles that arise during use or working of the tool disk 2, carried away from the interior of the holding device 1 and the holding device 1 in the radial direction.
  • a bottom 6 d of each spoke element 6 is located mainly and in large part on the upper side 3 a of the holding element 3.
  • the underside 6d of each spoke element 6 rests mainly and largely on the upper side 6c of the holding element 3 in order to stabilize the holding element 3.
  • a recess 10 is provided on an inclined plane 11 of the spoke element 6 in each spoke element 6.
  • the recess 10 extends from a lower edge 12 of the passage opening 7 to the first end 6 a of the spoke element 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP18163533.5A 2018-03-23 2018-03-23 Support pour produit abrasif Withdrawn EP3542961A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18163533.5A EP3542961A1 (fr) 2018-03-23 2018-03-23 Support pour produit abrasif
PCT/EP2019/056263 WO2019179847A1 (fr) 2018-03-23 2019-03-13 Fixation de moyen à meuler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18163533.5A EP3542961A1 (fr) 2018-03-23 2018-03-23 Support pour produit abrasif

Publications (1)

Publication Number Publication Date
EP3542961A1 true EP3542961A1 (fr) 2019-09-25

Family

ID=61763849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163533.5A Withdrawn EP3542961A1 (fr) 2018-03-23 2018-03-23 Support pour produit abrasif

Country Status (2)

Country Link
EP (1) EP3542961A1 (fr)
WO (1) WO2019179847A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19959348A1 (de) * 1999-07-29 2001-03-01 Ehwa Diamond Ind Co Schleifscheibe für die Verwendung in einer Schleifvorrichtung
EP3187305A2 (fr) * 2016-01-04 2017-07-05 Festool GmbH Plateau de meule et abrasif
CN206588817U (zh) * 2016-12-16 2017-10-27 方遥 一种新型研磨轮机盖

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19959348A1 (de) * 1999-07-29 2001-03-01 Ehwa Diamond Ind Co Schleifscheibe für die Verwendung in einer Schleifvorrichtung
EP3187305A2 (fr) * 2016-01-04 2017-07-05 Festool GmbH Plateau de meule et abrasif
CN206588817U (zh) * 2016-12-16 2017-10-27 方遥 一种新型研磨轮机盖

Also Published As

Publication number Publication date
WO2019179847A1 (fr) 2019-09-26

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