WO2003076135A1 - Dispositif d'assemblage pour meule - Google Patents

Dispositif d'assemblage pour meule Download PDF

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Publication number
WO2003076135A1
WO2003076135A1 PCT/HU2002/000019 HU0200019W WO03076135A1 WO 2003076135 A1 WO2003076135 A1 WO 2003076135A1 HU 0200019 W HU0200019 W HU 0200019W WO 03076135 A1 WO03076135 A1 WO 03076135A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixing
nest
fixing plate
grinding
diameter
Prior art date
Application number
PCT/HU2002/000019
Other languages
English (en)
Inventor
László TRADLER
Andor Tradler
Original Assignee
Tradler Laszlo
Andor Tradler
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 Tradler Laszlo, Andor Tradler filed Critical Tradler Laszlo
Priority to PCT/HU2002/000019 priority Critical patent/WO2003076135A1/fr
Priority to AU2002238791A priority patent/AU2002238791A1/en
Publication of WO2003076135A1 publication Critical patent/WO2003076135A1/fr

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/20—Mountings for the wheels
    • 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 invention relates to a connecting device for a grinding wheel to a grinding head, which makes possible fixing of grinding wheels on manual machines, or small machines of air or electrical driving.
  • the grinding wheel is composed of various materials, for example of wood, metal, plastic, textile and grinding material in a way, that a flexible material is joined the body of the wheel along the outline, on which a material provided with grinding material, preferably an exchangeable grinding band is fixed.
  • the material provided with grinding material preferably a grinding band is fixed to the wheel with a flexible fixing element.
  • the flexible fixing element is located in the cutting formed in the body of the wheel and has a flexible element joining the fixing element. Depending on the diameter of the wheel one or more flexible fixing element is provided.
  • Hungarian utility model HU U 2123 makes known a grinding device that can be fixed to small machines.
  • the grinding device shown in this utility model has a fixing plate joining a rubber plate and grinding paper is fixed to the fixing plate. It is characterized by that the rubber plate has a threaded bushing and a threaded connection with lengthening shank is joined its threaded boring.
  • the object of the invention is a connecting device for a grinding wheel to a grinding head, said device comprising of a grinding head provided with a fixing part and joined by a grinding wheel.
  • the connecting device is characterized by that, a fixing nest serving as a fixing for a grinding wheel is formed in the bottom of the grinding head provided with a threaded connection on the upper part of the grinding head, said fixing nest is joined by a fixing plate, said fixing plate is preferably fixed by an adhesive through its support unit to the grinding wheel and said fixing plate is joined in a way, that - after a preferably 90° twisting - at the time of fixing a fixing flap placed on the upper part of the fixing plate closes in the fixing nest above a fixing shoulder in a self-locking way.
  • the Dl diameter of an installing opening of the fixing nest is the same or bigger, than the Df diameter of the fixing flap of the fixing plate, and the Dl diameter of the fixing nest is gradually declining towards the closing direction and in closing position the D2 diameter of the fixing nest is smaller, than the Df diameter of the fixing flap, furthermore there are stops in the fixing nest to prevent further twisting and complete jamming.
  • the inner diameter of the flexible rubber rim located in circle on the lower part of the grinding head is the same as the outer diameter of the support unit of the fixing plate.
  • the threaded connection is joined by the driving axis of a small machine, or in given case said threaded connection is joined by a shank with a threaded flange. Both the threaded connection of the grinding head and the shank with lengthening threaded connection are preferably of the same key opening and of hexagon head.
  • the raw material of the grinding head is preferably metal, in given case aluminum or steel, or plastic, or rigid rubber
  • the raw material of the fixing plate is preferably rigid plastic of high tensile strength and of high heat resistance, in given case ABS.
  • Fig.l shows the lateral elevation of the solution according to the invention in half- elevation, half-section.
  • Fig.2 shows the lateral elevation of the grinding wheel and the joining fixing plate.
  • Fig.3 shows the top-view of the grinding wheel and the joining fixing plate.
  • Fig. 4 shows the inner formation of the fixing nest of the grinding head at the cross section A- A of the Fig.1.
  • Fig.l shows the lateral elevation of the solution according to the invention in half- elevation, half-section.
  • the solution comprises of the grinding head 4 provided with a fixing nest 5 and a grinding wheel 8 provided with a fixing plate 9 joining the fixing nest 5 of the grinding head 4.
  • the grinding head 4 provided with connection 3 threaded on top can be seen on Fig. 1.
  • the fixing nest 5 is formed in the bottom of the grinding head 4 providing fixing for the grinding wheel 8.
  • the axis of the driving small machine, or in given case a shank 1 ending in a threaded flange 2 is connected to the threaded connection 3 ensuring the drive of the grinding wheel.
  • the grinding head 4, the inner shape of the fixing nest 5, and the fixing shoulder 7 in the fixing nest 5 can be seen in half-section in Fig.l.
  • the support 10 of the fixing plate 9 is connected to the grinding wheel 8.
  • the fixing flaps 12 of the fixing plate 9 should be inserted to the installing opening 13 of the self-locking fixing nest 5 formed properly in the bottom of the grinding head 4 and the fixing flaps 12 of the fixing plate 9 will be self-locked in the fixing nest 5 during the 90° twisting.
  • the fixing flap 12 will go behind the fixing shoulder 7 in the fixing nest 5, furthermore the support of the fixing plate 9 will rest against the bottom of the grinding head 4 as well.
  • Fig.2 shows the lateral elevation of the grinding wheel 8 and the joining fixing plate 9.
  • the support 10 of the fixing plate 9 is connected to the grinding wheel 8 with adhesive.
  • the lateral formation of the fixing plate 9, the fixing flap 12 on the upper part of the fixing plate 9 and the groove 11 below it as well as the centralizing cylindrical part 16 below the fixing flap 12 can be seen well in Fig.2.
  • Fig.3 shows the top-view of the grinding wheel 8 and the joining fixing plate 9.
  • the fixing flaps 12 of Df diameter outer edge 15 shaped as two-direction extensions on the upper part of the fixing plate 9 can be seen in the figure.
  • Fig. 4 shows the inner formation of the fixing nest 5 of the grinding head 4 at the cross section A- A of the Fig.l.
  • the installing opening 13 is shown with dotted line in the figure the diameter Dl of said installing opening 13 is the same or bigger than the Df diameter of the fixing flap 12 of the fixing plate 9.
  • the size of the installing opening 13 of the fixing nest 5 makes possible the easy connection of the fixing plate 9 because its size is preferably the same as the Df diameter of the fixing flaps 12.
  • the fixing nest 5 however is of D2 diameter in the closing direction, which is smaller, than the Df diameter, consequently the fixing flaps 12 will get tightened flexibly on their outer edge 15 in the fixing nest 5.
  • the support 10 of the fixing plate 9 fits into the inner diameter of the rubber rim 6 of the grinding head 4, this way ensuring an even safer direction for the grinding wheel 8, and makes possible an accurate circumduction, which is further increased by the inner fixing shoulder 7.
  • the threaded connecting part 3 of the grinding head 4 as a lengthening shank 1 with thread is of key opening and of hexagon head.
  • the grinding head 4 actually has a connecting part 3 with thread, which joins a lengthening shank 1 of required length, or joins directly the axis of the driving machine.
  • a connecting part 3 with thread which joins a lengthening shank 1 of required length, or joins directly the axis of the driving machine.
  • the use of the same threads is preferable, because in that case the grinding head 4 can be used either by inserting or without inserting the shank.
  • the joining threads are of the same diameter, consistent with the axis of the driving machine.
  • the Df diameter of the fixing plate 9 and the Dl diameter of the installing direction of the fixing nest 5 are the same, preferably 30 mm.
  • the D2 diameter of the fixing nest 5 is preferably 28-29 mm and the definite dimension is chosen in accordance with the joining depending on the material of the fixing flap 12 in such a way, that the fixing flap 12 in the fixing nest 5 should close deforming flexibly, tighten, and it should be taken out without damage. Dimensions should be determined according to a ight tolerance fitting.
  • the inner diameter of the flexible rubber rim 6 located on the lower part of the grinding head 4 in circle providing flexible support and suitable oscillation absorption is preferably the same as the outer diameter of the support 10 of the fixing plate 9 which also promotes centralization and transmitting of lateral forces. This way the support 10 of the fixing plate 9 fits into the inside of the flexible rubber rim 6, so the fixing plate 9 is concentrically fixed and every level of the fixing plate 9 is supported.
  • the material of the fixing plate 9 should be durable, in given case for example aluminum, steel, or plastic, or rigid rubber.
  • the material of the fixing plate 9 is inexpensive, easy and fast to produce, of proper tensile strength, heat-resisting rigid plastic, preferably ABS.
  • Connecting of the fixing plate 9 and the grinding wheel 8 can be realized by injection molding following the proper surface technology process. Producing of the grinding wheel 8 takes place from sandpaper, from which the wheels are cut, and the fixing plate 9 will be glued on the back by heat-resistant adhesives of great mechanical load-bearing capacity.
  • the paper serving as raw material for the grinding wheel 8 should bear a speed of 20 m/sec.
  • the advantage of the solution according to the invention is, that the grinding wheel can be easily and quickly exchanged in the grinding head. It replaces the fixing by a threaded boring applied previously.
  • the grinding plate in the grinding plate there is an appropriately shaped self-locking fixing nest, into the opening of which the fixing flaps of the fixing plate can be fitted. By the 90° twisting of them self-locking can be ensured.
  • the middle centralizing cylindrical part of the fixing plate ensures absorption of the lateral shearing forces occurring during grinding, so the shearing surface is many-fold more of the conventional solution with screws. Due to this its use is significantly more advantageous from point of view of safety.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne un dispositif d'assemblage caractérisé en ce qu'il comporte une cavité de fixation (5) servant à fixer une meule (8) ; cette cavité est formée dans la partie inférieure de la tête de meule (4), la partie supérieure de la tête de meule (4) comportant une partie filetée (3). La cavité de fixation (5) peut être réunie à une plaque de fixation (9), cette dernière (9) étant de préférence fixée à la meule (8) par un adhésif, par l'intermédiaire de son unité support (10). Ladite plaque de fixation (9) s'assemble de manière à obturer de manière autobloquante la cavité de fixation (5) au-dessus d'un épaulement de fixation (7), après un mouvement de torsion de 90°, de préférence, nécessaire pour fixer un élément abattant (12) se situant sur la partie supérieure de la plaque de fixation (9).
PCT/HU2002/000019 2002-03-12 2002-03-12 Dispositif d'assemblage pour meule WO2003076135A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/HU2002/000019 WO2003076135A1 (fr) 2002-03-12 2002-03-12 Dispositif d'assemblage pour meule
AU2002238791A AU2002238791A1 (en) 2002-03-12 2002-03-12 Connecting device for a grinding wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HU2002/000019 WO2003076135A1 (fr) 2002-03-12 2002-03-12 Dispositif d'assemblage pour meule

Publications (1)

Publication Number Publication Date
WO2003076135A1 true WO2003076135A1 (fr) 2003-09-18

Family

ID=27799823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2002/000019 WO2003076135A1 (fr) 2002-03-12 2002-03-12 Dispositif d'assemblage pour meule

Country Status (2)

Country Link
AU (1) AU2002238791A1 (fr)
WO (1) WO2003076135A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322389A (fr) * 1962-03-15 1963-03-29 Objets de finissage et leurs éléments de support, matières de finissage et leur procédé de fabrication
EP0904896A2 (fr) * 1997-09-29 1999-03-31 Yanase Kabushiki Kaisha Montage de meulage rotatif

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322389A (fr) * 1962-03-15 1963-03-29 Objets de finissage et leurs éléments de support, matières de finissage et leur procédé de fabrication
EP0904896A2 (fr) * 1997-09-29 1999-03-31 Yanase Kabushiki Kaisha Montage de meulage rotatif

Also Published As

Publication number Publication date
AU2002238791A1 (en) 2003-09-22

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