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WO2007031815A1 - Corps abrasif - Google Patents

Corps abrasif Download PDF

Info

Publication number
WO2007031815A1
WO2007031815A1 PCT/IB2005/003093 IB2005003093W WO2007031815A1 WO 2007031815 A1 WO2007031815 A1 WO 2007031815A1 IB 2005003093 W IB2005003093 W IB 2005003093W WO 2007031815 A1 WO2007031815 A1 WO 2007031815A1
Authority
WO
WIPO (PCT)
Prior art keywords
abrasive body
abrasive
tongues
central portion
anyone
Prior art date
Application number
PCT/IB2005/003093
Other languages
English (en)
Inventor
Pasquale Catalfamo
Original Assignee
Pasquale Catalfamo
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 Pasquale Catalfamo filed Critical Pasquale Catalfamo
Priority to CA002622553A priority Critical patent/CA2622553A1/fr
Priority to US12/066,545 priority patent/US20080254726A1/en
Priority to PCT/IB2005/003093 priority patent/WO2007031815A1/fr
Priority to AU2005336407A priority patent/AU2005336407B2/en
Priority to JP2008530630A priority patent/JP2009508695A/ja
Publication of WO2007031815A1 publication Critical patent/WO2007031815A1/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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; 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
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • B24D9/085—Devices for mounting sheets on a backing plate

Definitions

  • the present invention relates to an abrasive body set to be used in machines designed to carry out working operations by abrasion; in particular the abrasive or sanding disks in accordance with the invention are intended for surface finishing of manufactured articles or for preparing predetermined treatments of same.
  • the apparatus of known type generally have a load bearing machine body to first of all bear a corresponding supporting wheel and to set the latter in rotation around an axis thereof.
  • the supporting wheel is in turn such envisaged as to be able to receive a suitable sanding disk in engagement, said disk having a work surface that, under operating conditions, is designed to face the article of manufacture to be worked.
  • This work surface carries the necessary abrasive material to enable working by material removal.
  • sanding disks consisting of a support of paper material carrying the abrasive material, said disks being connected with the respective supporting wheel by an adhesive or a coupling involving use of a tape fastener of the so- called "Velcro" type.
  • the sanding disk too must have holes of the same features as those of the supporting wheel and in register with the latter to allow passage of the abrasive powders.
  • the sanding disks in accordance with this type of solution are made of paper or cloth material and are brought into engagement with the respective supporting wheel by turning the tongues down and engaging them through the holes to the corresponding pins integral with the supporting wheel.
  • a supporting wheel having a perimeter portion made of deformable material enables engagement between the sanding disk and the supporting wheel; the presence of tongues and the respective pins allows the suction holes of the sanding disk and those of the supporting wheel to be in register.
  • the present invention aims at making available a sanding disk . ensuring an optimal grip on the supporting wheel also during the operations for material removal.
  • FIG. 1 shows a supporting wheel adapted to be used in machines for surface working of manufactured articles in a perspective top view
  • FIG. 2 shows an abrasive body with tongues provided with a slit in accordance with the present invention
  • FIG. 3 shows the abrasive disk applied to the supporting wheel in a perspective view
  • FIG. 4 is a side view partly in section showing use of a sanding disk in accordance with the invention on a machine for surface working of articles of manufacture;
  • FIG. 5 shows a possible alternative embodiment of the sanding disk in accordance with the present invention.
  • FIG. 6 shows the region ' of engagement of a tongue of the abrasive body with the respective pin of the supporting wheel, to an enlarged scale.
  • an abrasive body in accordance with the present invention has been generally identified by reference numeral 1.
  • the abrasive body therein shown consists of a central portion 4 of a substantially disk-shaped conformation having a lower work surface 2 that under operating conditions is designed to enable material removal from the surface of an article of manufacture to be finished off.
  • the work surface 2 will be provided with the suitable abrasive or sanding means 3 at least at the central portion 4 of body 1, which means will consist of appropriate granules of abrasive material applied to said work surface.
  • tongues may be provided, that possibly may not be spaced apart the same distance from each other, provided they are able to ensure a substantially .steady engagement of the sanding disk with the supporting wheel.
  • the tongues 5 and central portion 4 of the abrasive body 1 are of one piece construction and in particular can be manufactured by injection moulding from an appropriate polyurethane material (obviously other materials and other manufacturing technologies can be also adopted) .
  • the abrasive body 1 can be made of several parts separated from each other, e.g. the tongues 5 separated from the central portion 4 to which they are then linked by means of bonding agents or by other systems .
  • the abrasive body 1 will be made (at least partly or preferably fully) of an elastically deformable material .
  • deformations can take place in the extension plane of the central portion 4 of the abrasive body without involving breaks and tears on the disk.
  • tongues 5 or part of the central portion 4 can be made of elastically deformable material, depending on the operating requirements.
  • abrasive means 3 can be alternatively dispersed at the inside of the abrasive disk, only in the central portion 4 thereof, for example (being injected in the abrasive body during the manufacturing step) or alternatively, said abrasive means can be engaged by suitable resins or bonding agents exclusively at the work surface 2 of the abrasive body itself.
  • the elastic disk When the abrasive means 3 is dispersed in the central portion 4 of disk 1, the elastic disk will have a longer duration than the sanding disks of known type; in fact, simultaneously with consumption of the abrasive means on the surface, also the elastic material in which the abrasive means is buried will be used up, which will cause the abrasive material buried in the region just below the work surface to go up to the surface. Therefore the disk will have to be replaced at a later time than the disks of standard type.
  • sanding disks can be produced that are substantially impervious to passage of the abraded powder and in which the granules of abrasive material are directly engaged or not on the surface of the elastic material .
  • a plurality of passage holes 14 can be provided on the sanding disk which holes are adapted to enable suction of the scraped off material by a machine 20 of known type (see Fig. 4); said holes 14 must therefore necessarily be in register with the respective holes present in the supporting wheel.
  • the sanding disk can be made of a material of a spongy nature with open cells or of an elastic net (i.e. susceptible of deformation in its extension plane following pulling actions) allowing passage of the abraded powder due ' to the presence of the cavities of the material the sizes of which can be increased following deformations of the disk, which will improve the efficiency in sucking the abraded powder.
  • a suitable thickness of the sanding disk 1 can be established a priori and said disk can reach a thickness of 80 mm for example, depending on requirements.
  • the support 6 will have respective pins 12 emerging from its upper surface 7 adapted, under engagement conditions, to pass through said cuts 9.
  • one of the adjacent edges 11 is in the form of a convex tab and, under operating conditions, it exerts pressure against the respective pin 12 thereby improving the engaging steadiness between the two parts (see Fig. 6).
  • the elastic character of the abrasive body can be utilised to promote engagement of same with the supporting wheel.
  • the tongues 5 and/or central portion 4 of the abrasive body 1 can be elastically deformed to enable guick engagement of pins 12 in the respective cuts 9 while at the same time maintaining the sanding disk tensioned on the supporting wheel.
  • the particular configuration taken during the engagement step makes it impossible to disengage the sanding disk 1 from the supporting wheel 6 even as a result of possible deformations of the peripheral portion 21 of the supporting wheel 6 (which deformable portion enables the shape of the article of manufacture under working to be better followed and therefore improved finishing features and tensioning of the disk to be ensured) , so that the operating reliability of the whole device is increased.
  • the abrasive body being the object of the invention is adapted to be mounted both on completely rigid supporting wheels and on supporting wheels having a deformable peripheral portion, due to exploitation of the intrinsic elasticity/deformability features of the sanding disk itself.
  • the abrasive body of the invention at the upper surface of the central disk-shaped portion 4 has no means for engagement with the supporting wheels such as adhesive means, bonding agents or tape fasteners of the "Velcro" type.
  • the abrasive body in accordance with the invention will be connected with the supporting wheel 6 exclusively by means of tongues 5, while the central portion 4 will be movable and will not be linked to the lower surface of the supporting wheel 6 itself.
  • the inner deformations of the abrasive body with respect to the surface to be worked allow the workpiece to be better finished through creation of movements adapted to reduce and even eliminate clogging of the sanding disk.
  • the supporting wheel 6 will be provided with corresponding hooking portions 22 to receive the tongues 5, as shown in said figure .
  • the invention achieves important advantages.
  • the solution involving dispersion of the abrasive material within the spongy body increases duration of the disk as compared with the sanding disks present on the market.

Landscapes

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

Abstract

L'invention concerne un corps abrasif ayant une surface de travail (2) qui dans des conditions d’exploitation est conçue pour faire face à la surface d’un article de transformation à usiner, cette surface étant pourvue de moyens abrasifs de manière à permettre un usinage par abrasion ou de finition, un nombre prédéterminé de languettes (5) émergeant de la portion centrale (4) du corps abrasif (1) pour permettre l’engagement de celui-ci avec un support (6). Le corps abrasif est constitué d’un matériau déformable élastiquement et n’est pas fixé à la surface inférieure (8) du support (6). La présence de découpes (9) sur les languettes (5) augmente la prise du corps abrasif sur le support et l’utilisation du matériau élastique confère au corps abrasif une plus longue durée et un meilleur rendement tout en permettant une finition de plus grande qualité tout en réduisant les problèmes d’obstruction.
PCT/IB2005/003093 2005-09-16 2005-09-16 Corps abrasif WO2007031815A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002622553A CA2622553A1 (fr) 2005-09-16 2005-09-16 Corps abrasif
US12/066,545 US20080254726A1 (en) 2005-09-16 2005-09-16 Abrasive Body
PCT/IB2005/003093 WO2007031815A1 (fr) 2005-09-16 2005-09-16 Corps abrasif
AU2005336407A AU2005336407B2 (en) 2005-09-16 2005-09-16 Abrasive body
JP2008530630A JP2009508695A (ja) 2005-09-16 2005-09-16 研磨体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/003093 WO2007031815A1 (fr) 2005-09-16 2005-09-16 Corps abrasif

Publications (1)

Publication Number Publication Date
WO2007031815A1 true WO2007031815A1 (fr) 2007-03-22

Family

ID=36423684

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/003093 WO2007031815A1 (fr) 2005-09-16 2005-09-16 Corps abrasif

Country Status (5)

Country Link
US (1) US20080254726A1 (fr)
JP (1) JP2009508695A (fr)
AU (1) AU2005336407B2 (fr)
CA (1) CA2622553A1 (fr)
WO (1) WO2007031815A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146372A1 (fr) * 2017-02-13 2018-08-16 Kwh Mirka Ltd Agencements de conduit dans un tampon intermédiaire, tampon de support et article abrasif pour extraire des débris d'abrasion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203092275U (zh) * 2012-12-19 2013-07-31 富鼎电子科技(嘉善)有限公司 打磨机构
DE102020207733A1 (de) * 2019-09-04 2021-03-04 Robert Bosch Gesellschaft mit beschränkter Haftung Schleifwerkzeugvorrichtung, Schleifmittel und Schleifwerkzeugsystem
CN112496981A (zh) * 2020-12-03 2021-03-16 湖南省玛芸家居科技有限公司 一种圆形家具构件外表面打磨装置
DE102021121566A1 (de) * 2021-08-19 2023-02-23 Festool Gmbh Tellerwerkzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115943A (en) * 1936-07-11 1938-05-03 Harry F Hittle Abrading wheel sheet and sheet holder
JPS62292367A (ja) * 1986-06-11 1987-12-19 Kouyoushiya:Kk ダイヤモンド被覆弾性粒研磨シ−ト
WO1995021729A1 (fr) * 1994-02-15 1995-08-17 Catalfer Snc Di Catalfamo Giuseppe Systeme de fixation de disques abrasifs remplaçables aux faces laterales des plaquettes d'appareils rotatifs de ponçage
US5637386A (en) * 1995-01-10 1997-06-10 Norton Company Fining abrasive materials
DE202005005493U1 (de) * 2005-04-07 2005-07-21 Erkodent Erich Kopp Gmbh Elastischer Schleifkörper

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US505644A (en) * 1893-09-26 Buffing-pad
US407246A (en) * 1889-07-16 rogers
US2119738A (en) * 1937-03-08 1938-06-07 Harry W Dempsey Abrading apparatus
US3522681A (en) * 1968-12-18 1970-08-04 Gerald Lampert Rubbing apparatus
IT1044620B (it) * 1975-09-04 1980-04-21 Urso Giuseppe D Utensile smerigliatore con foglio di tela o carta abrasiva amovibile con faccia e spigolo attivi relativo foglio di tela o carta abrasiva e procedimento per la produzione e l assemblaggio di tale utensile
US4058936A (en) * 1976-01-20 1977-11-22 Miksa Marton Vacuum sander
DE3319925C1 (de) * 1983-06-01 1984-07-12 Bayerische Motoren Werke AG, 8000 München Spannvorichtung zum Halten eines Schleifblattes mit Befestigungslaschen an einem drehbaren Schleifteller
DE3433652A1 (de) * 1984-09-13 1986-03-20 Boehringer Mannheim Gmbh, 6800 Mannheim Immunchemisches messverfahren fuer haptene und proteine
JPH0398043U (fr) * 1990-01-26 1991-10-09
JP2718810B2 (ja) * 1990-07-10 1998-02-25 鹿島建設株式会社 床型枠用移動式支保工
US5170595A (en) * 1990-12-19 1992-12-15 Wiand Ronald C Pull tab for velcro backed marble grinding pad and method for removal
US5975987A (en) * 1995-10-05 1999-11-02 3M Innovative Properties Company Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
USD389388S (en) * 1996-03-05 1998-01-20 Black & Decker Inc. Sanding sheet
US6733365B1 (en) * 1997-08-12 2004-05-11 Arizona Board Of Regents Method and apparatus for hard machining
US6089963A (en) * 1999-03-18 2000-07-18 Inland Diamond Products Company Attachment system for lens surfacing pad
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115943A (en) * 1936-07-11 1938-05-03 Harry F Hittle Abrading wheel sheet and sheet holder
JPS62292367A (ja) * 1986-06-11 1987-12-19 Kouyoushiya:Kk ダイヤモンド被覆弾性粒研磨シ−ト
WO1995021729A1 (fr) * 1994-02-15 1995-08-17 Catalfer Snc Di Catalfamo Giuseppe Systeme de fixation de disques abrasifs remplaçables aux faces laterales des plaquettes d'appareils rotatifs de ponçage
US5637386A (en) * 1995-01-10 1997-06-10 Norton Company Fining abrasive materials
DE202005005493U1 (de) * 2005-04-07 2005-07-21 Erkodent Erich Kopp Gmbh Elastischer Schleifkörper

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PATENT ABSTRACTS OF JAPAN vol. 0121, no. 82 (M - 702) 27 May 1988 (1988-05-27) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146372A1 (fr) * 2017-02-13 2018-08-16 Kwh Mirka Ltd Agencements de conduit dans un tampon intermédiaire, tampon de support et article abrasif pour extraire des débris d'abrasion
US11780056B2 (en) 2017-02-13 2023-10-10 Mirka Ltd Conduit arrangements in intermediate pad, backing pad, and abrading article for extracting abrading debris

Also Published As

Publication number Publication date
JP2009508695A (ja) 2009-03-05
AU2005336407A1 (en) 2007-03-22
CA2622553A1 (fr) 2007-03-22
US20080254726A1 (en) 2008-10-16
AU2005336407B2 (en) 2012-06-28

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