EP1449617A1 - Feuille abrasive pour meuleuse portative - Google Patents

Feuille abrasive pour meuleuse portative Download PDF

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Publication number
EP1449617A1
EP1449617A1 EP03003963A EP03003963A EP1449617A1 EP 1449617 A1 EP1449617 A1 EP 1449617A1 EP 03003963 A EP03003963 A EP 03003963A EP 03003963 A EP03003963 A EP 03003963A EP 1449617 A1 EP1449617 A1 EP 1449617A1
Authority
EP
European Patent Office
Prior art keywords
sanding
abrasive
recess
sheet
sheet according
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Withdrawn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
EP03003963A
Other languages
German (de)
English (en)
Inventor
Claus Geiger
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.)
TTS Tooltechnic Systems AG and Co KG
Original Assignee
TTS Tooltechnic Systems AG and Co KG
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 TTS Tooltechnic Systems AG and Co KG filed Critical TTS Tooltechnic Systems AG and Co KG
Priority to EP03003963A priority Critical patent/EP1449617A1/fr
Publication of EP1449617A1 publication Critical patent/EP1449617A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • 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

Definitions

  • the invention relates to an abrasive sheet for hand grinders, which have a dust extraction device with a Backing layer with an abrasive layer applied to the underside is, the sanding sheet at right angles to Abrasive sheet level through suction openings for suction of dust generated during grinding.
  • Hand grinders usually have a dust extraction device so that when grinding a workpiece resulting dust is removed in a targeted manner.
  • the to a grinding movement when the hand grinder is switched on driven grinding plate of the machine in question Passage openings.
  • the respective sanding sheet is included with the suction openings aligned on the Sanding plate attached so that the sanding dust through the Sanding disc can be sucked through.
  • the object of the present invention based on a sanding sheet of the type mentioned create that particularly effective with regard to dust extraction is.
  • the Abrasive layer at least one of a suction opening outgoing, open at the bottom of the sanding sheet and contains recess covered to the support layer.
  • a hand grinder 1 which for grinding machining of workpieces is used.
  • it is a rotary hand grinder, whose engine is only through its axis line 2 indicated drive shaft drives on which a grinding plate 3 is rotatably attached.
  • the Hand grinder 1 with its sanding plate 3, on the one sanding sheet to be described is attached to the Surface 4 of the respective workpiece placed.
  • the grinding plate 3 introduces a machine motor Grinding movement from, in the embodiment, a rotational movement around axis line 2.
  • the in this case circular grinding plate 3 has rigid plate upper part 5, with which the grinding plate 3 the drive shaft of the hand grinder is attached.
  • a plate lower part 6 fixed attached On the plate upper part 5 is a plate lower part 6 fixed attached, the made of resilient plastic material can exist and on its underside an adhesive disc 7th wearing.
  • the grinding plate 3 is made up of a number of through openings 11 crossed, the one hand on the bottom and on the other hand, open at the top of the grinding plate 3.
  • the passage openings 11 is not shown Dust extraction device assigned so that when the Hand grinder the through openings 11 of the Bottom of the sanding disc flowing through and then through the housing of the hand grinder to one connected to it and suction hose connected to a suction device guided suction flow for sucking off the resulting during grinding Dust is generated.
  • the sanding plate can also be constructed differently than described his. In connection with the present invention is merely important that the hand grinder a Dust extraction device and the grinding plate associated Has passage openings 11.
  • grinding plate used is to be understood widely and should regardless of the type of grinding machine whose Designate the part performing the grinding movement.
  • the grinding work is carried out by means of a grinding sheet 8; 8a; 8b; 8c executed.
  • the in the drawing in Figs. 4 to 6 shown grinding sheets 8a; 8b; 8c are summarized below described with the sanding sheet 8 according to FIGS. 1 to 3. While the sanding sheet 8 corresponds to the sanding plate 3 is circular, the sanding sheets 8a; 8b; 8c one rectangular shape so that it can be used for eccentric or linear grinder with appropriately contoured Sanding pads are suitable.
  • the sanding sheets 8; 8a; 8b; 8c are each one Carrier layer 9; 9a; 9b; 9c and an abrasive layer 10; 10a; 10b; 10c formed.
  • the sanding sheet 8; 8a; 8b; 8c a flexible shape on. It is facing the backing layer 3 with the backing pad 9; 9a; 9b; 9c in a suitable manner detachable on the underside the grinding plate 3 attached.
  • the two locking parts are fixed to the sanding plate or the backing layer connected.
  • Velcro fasteners are for attachment to sanding pads of the sanding sheet usual.
  • One of the Closure parts a variety of over the area of the closure part distributed, hook-like adhesive elements and the other Closure part a variety of over the area of this Distributed, loop-like or loop-like fastener Adhesive elements on so that when the two closure parts contact the hook-like adhesive elements and the loop or loop-like adhesive elements interlocking with each other arrive and solid cohesion is achieved. To remove the sanding sheet, simply remove it become.
  • the abrasive layer 10; 10a; 10b; 10c is on the bottom the carrier layer 9; 9a; 9b; 9c applied and consists of a suitable abrasive that grinds the workpiece.
  • the abrasive may be original viscous mass act by means of a corresponding Shape on the underside facing away from the carrier layer a pyramid-like effect with an abrasive grain effect Maintains structure.
  • Another common manufacturing process consists in placing an adhesive layer on the carrier layer and then apply abrasive grains to them.
  • the sanding sheet 8; 8a; 8b; 8c contains the sanding sheet Suction openings penetrating at right angles to the level of the sanding sheet 12; 12a; 12b; 12c, the spatial arrangement of the arrangement the openings on the underside of the passage openings 11 of the grinding plate 3 corresponds, so that at the grinding plate attached sanding sheet the suction openings with the mouths of the openings 11 are aligned.
  • the one when grinding grinding dust arising on the workpiece surface 4 is therefore through the suction openings 12; 12a; 12b; 12c through aspirated.
  • FIGS. 1 to 3 are the Suction openings 12 arranged distributed on a circular line.
  • the rectangular sanding sheets 8a; 8b; 8c of FIG. 4 to 6 are two each in the longitudinal direction of the sanding sheet rows of suction openings extending at a distance from one another available.
  • the number and arrangement of the suction openings can also be different and depends on the passage openings of the grinding plate.
  • the abrasive layer 10; 10a; 10b; 10c contains recesses 13; 13a; 13b; 13c, each of which has a suction opening 12; 12a; 12b; 12c go out on the underside of the sanding sheet 8th; 8a; 8b; 8c open and to the carrier layer 9; 9a; 9b; 9c are covered.
  • the recesses 13; 13a; 13b; 13c the abrasive layer 10; 10a; 10b; 10c, so that it from the carrier layer 9; 9a; 9b; 9c are covered. Therefore, in FIGS. 2, 4, 5 and 6, the carrier layer by Recesses visible through.
  • the depth of the measured perpendicular to the sanding sheet plane Gaps 15 is relatively small. It is enough however, to remove substantial amounts of the sanding dust Allow suction openings.
  • the dust is removed from the workpiece surface in the manner described 4 also vacuumed from those places that are off the suction openings 12; 12a; 12b; 12c lie.
  • the recesses 13; 13a; 13b; 13c a channel-like longitudinal shape.
  • the shape, the course and the mutual arrangement of the Recesses contained in the abrasive layer can by Experiments are optimized. For example, it can be useful be that, as with the sanding sheet 8b of FIG. 5, the Recesses 13b closed except at the suction openings 12b are trained. The channel-like shown Recesses 13b therefore end at their respective suction opening 12b opposite end within the abrasive layer 10b and are enclosed by this.
  • each two or more suction openings 12a through a channel-like Recess 13a are interconnected.
  • the migration of the grinding dust through the spaces 15 increases the suction openings can be favored by the fact that how in the embodiments of FIGS. 1 to 3 and 6 Recesses 13; 13c at a distance from the suction openings 12; 12c arranged point when operating with the environment is connected so that outside air can flow in.
  • the Sanding sheet 8 of FIGS. 1 to 3 has this one Sanding sheet 8 penetrating at right angles to the sanding sheet plane Inflow opening 16, which are attached to the grinding plate 3 Condition through the grinding plate 3 with the Environment is connected. This is used in the case shown the inflow bore aligned with the inflow opening 16 17 in the grinding plate 3, which has at least one cross 18 of the Sanding discs 3 with the circumference of the grinding disc and thus with connected to the environment.
  • the post-flow opening 16 is central arranged. Each have a suction opening 12 with the Channel-like recesses 13 connecting the inflow opening 16 result in a star-like arrangement.
  • the channel-like Recesses 13 of the direction of rotation of the grinding plate 3 run accordingly curved.
  • the recesses run 13c to the peripheral edge of the sanding sheet 8c and open open there so that outside air flows in from there can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP03003963A 2003-02-22 2003-02-22 Feuille abrasive pour meuleuse portative Withdrawn EP1449617A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03003963A EP1449617A1 (fr) 2003-02-22 2003-02-22 Feuille abrasive pour meuleuse portative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03003963A EP1449617A1 (fr) 2003-02-22 2003-02-22 Feuille abrasive pour meuleuse portative

Publications (1)

Publication Number Publication Date
EP1449617A1 true EP1449617A1 (fr) 2004-08-25

Family

ID=32731567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003963A Withdrawn EP1449617A1 (fr) 2003-02-22 2003-02-22 Feuille abrasive pour meuleuse portative

Country Status (1)

Country Link
EP (1) EP1449617A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499933A (en) * 1949-08-04 1950-03-07 Joseph F Smul Surface cleaning attachment
US4202140A (en) * 1977-09-23 1980-05-13 Black & Decker Inc. Abrasive sheet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499933A (en) * 1949-08-04 1950-03-07 Joseph F Smul Surface cleaning attachment
US4202140A (en) * 1977-09-23 1980-05-13 Black & Decker Inc. Abrasive sheet

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