EP0397624A2 - Support pour disque abrasif - Google Patents

Support pour disque abrasif Download PDF

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Publication number
EP0397624A2
EP0397624A2 EP90830208A EP90830208A EP0397624A2 EP 0397624 A2 EP0397624 A2 EP 0397624A2 EP 90830208 A EP90830208 A EP 90830208A EP 90830208 A EP90830208 A EP 90830208A EP 0397624 A2 EP0397624 A2 EP 0397624A2
Authority
EP
European Patent Office
Prior art keywords
tool
shank
threaded
fastened
locking
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Withdrawn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
EP90830208A
Other languages
German (de)
English (en)
Other versions
EP0397624A3 (fr
Inventor
Franco Romanini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0397624A2 publication Critical patent/EP0397624A2/fr
Publication of EP0397624A3 publication Critical patent/EP0397624A3/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Withdrawn legal-status Critical Current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
    • 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

Definitions

  • This invention relates to a tool for honing and the like.
  • Tools of the above type are already known and it is known as well that they may be grouped in two main classes, the first one including the substantially disc-­shaped tools, known as “backing plates", which are subjected to a rotating motion, while the second included­es the tools having a substantially rectangular working surface, and which are subjected to a linear oscillat­ing motion.
  • the active or working surface of both types of tools mentioned above is lined,according to known techniques, with an abrasive material sheet which, through the mot­ion the tool is subjected to, will perform a honing operation on the surface to be machined.
  • the abrasive disc is applied by means of a "Velcro" type fastening, whereby the abrasive disc may be easily replaced once it has worn out or when replacement is needed with a different grain disc.
  • the abrasive material sheet is applied to a support body of the driving apparatus and fastened thereto at the ends, by means of locking hooks.
  • the abrasive action is lacking because the abrasive sheet is kept in place only at the ends thereof by means of the above mentioned locking hooks which do not allow for thorough adhesion over the whole vibrating surface.
  • a further drawback of the conventional backing plates stems from the fact that their shank, i.e. the rear projection thereof which is to be fastened in a suitable seat of the driving apparatus, is integral with the tool itself or, in any case, it is set for a single type tool. As it is apparent, in this condition , a tool provided with a particularly shaped shank can be used only for a certain type of driving apparatus, just because said shank will be compatible with said apparatus.
  • the tool according to this invention is a rotary working motion type tool and therefore it comprises the so called “backing plate” made of a substantially circular body 10 having a substantially frustoconical shaped projection 12 provided on the rear face thereof. Still on the rear face of circular body 10 there is provided a plurality of ribs 14 connecting projection 12 with the peripheral edge of body 10, and having a height tapering down towards said edge.
  • the tool according to this invention is made of rubber and therefore it can be manufactured through a single molding operation.
  • the properties of the rubber mix are chosen in such a way as to provide the tool at the same time with enough stiff­ness to perform the honing action, together with such a flexibility to allow the same to deform moderately according to the shape and the type of the surface to be machined.
  • ribs 14, besides compris­ing a tool stiffening member, provide a useful means for increasing the heat exchange towards the environment, while reducing the degree of heating of the tool.
  • Both bushing 16 and washer 18 provide a stiffening of the tool, in the connecting position thereof with the fastening shank to the driving apparatus, whereby high strength properties may be attained, also at high operating speeds.
  • Inner surface 20 of bushing 16 is threaded in order to enable different shanks to be fastened, or to enable the tool to be mounted on an operating apparatus which does not require a fastening shank.
  • Figure 2 shows how the tool according to the invention may be used in a first way, by means of a shank 22 comprising a threaded portion 24 adapted to threadedly engage within bushing 16, and an unthreaded portion 26 where it is possible to tighten the locking chuck 28 of an electric drill.
  • a shank 22 comprising a threaded portion 24 adapted to threadedly engage within bushing 16, and an unthreaded portion 26 where it is possible to tighten the locking chuck 28 of an electric drill.
  • Figure 3 shows a further advantageous embodiment of the tool, according to the invention in case it has to be used with an angular electric sanding machine having a shaft 32, threaded at end 34, which can screw directly within bushing 16.
  • FIG 4 shows a further advantageous application of the tool of this invention, when the same is used with an angular pneumatic sanding machine, of a planetary type.
  • a shank 36 having a first threaded portion 38 adapted to screw into bushing 16, and a second threaded portion 40 adapted to screw into a seat provided on purpose in head 42 of the sanding machine.
  • Shank 36 as well has a substantially nut shaped inter­mediate projection 44, for the same purpose already explained about shank 22 of Figure 2.
  • abrasive disc 46 is lined onto the tool.
  • the above lining operation is performed preferably, although not exclusively, by means of a "Velcro" type fastening since in that way abrasive disc 46 may be replaced rapidly and easily.
  • the non abrasive face or rear face of abrasive disc 46 has a sub­stantially hairy, plush-like consistency, adapted to enable it to be temporarily locked on the opposite face of an intermediate disc 48, the latter having a substantially wrinkled consistency or provided with micro-hooks adapted to grip into the rear surface of abrasive disc 46.
  • intermediate disc 48 does not get fastened directly onto the backing plate working surface, but in an original way which allows the machining surface comprising abrasive disc 46 to be made yielding or in any case flexible.
  • the lining operation of the intermediate disc 48 onto the backing plate is performed after having interposed a layer of resil­ient material 50 which is fastened on a face thereof to the backing plate and,on the opposite face,to disc 48.
  • resilient material layer 50 to the backing plate may be performed in any known way, for in­stance by glueing or by ultrasonic welding, since said resilient layer 50 is preferably, although not exclusive­ly,made of plastic material.as it will be specified in the following.
  • intermediate disc 48 to layer 50 may be performed in any way already known, like for instance by glueing.
  • the material comprising layer 50 is advantageously a material of substantially spongy consistency, or in any case moderatly yielding in compression, and for said purpose it is possible to use advantageously, although not exclusively, a semi-hardened polyurethane.
  • the layer of resilient material 50 may be comprised of a bi-adhesive material, having both faces lined with a peelable protection silicon paper.
  • said bi-­adhesive material may be a material commercially known by the abbreviation Fas-Tape 432, sold by the Company Vagnone & Boeri, Turin, Italy. If this solution is chos­en, it will be possible to commercialize the intermediate discs 48 with the bi-adhesive layer 50 applied thereto, i.e. complete­ly ready to be lined onto the backing plate after having simply peeled off the second silicon paper sheet.
  • the frustoconical projection 12 has a central longitudinal passage 52 which allows a shaft 54 to be introduced from the backing plate front side.
  • Shaft 54 has a head 56 which is received in a suitable seat of passage 52, while the shank thereof project behind the backing plate and has a locking nut 58 threaded thereon, in order to retain shaft 54 on the backing plate and to provide a shank thereof.
  • the projecting portion of shank 54 is not threaded whereby this backing plate may be used for instance for an electric drill.
  • said projecting portion could be threaded as well and could be used for applying the backing plate to other apparatus.
  • a further particularly advantageous application of the tool of this invention is the one concerning the case of an orbital honing machine.
  • the tool of this machine tool which is not shown in that it is known per se, per­forms a linear reciprocating motion and the abrasive sheet is fastened to a suitable support member thereof by means of locking hooks or springs which retain the ends of said abrasive sheet onto the ends of said support member.
  • the whole remaining portion of the abrasive sheet i.e. a major portion of the length there­of, is not retained by the support member in any way, whereby it is loose relative to said support member and forms a sag relative to it.
  • the honing operations cannot take place correctly.
  • the abrasive material sheet is no longer fastened by means of said locking hooks or springs, but by means of said resilient bi-adhesive material layer, with the double advantage of enabling the abrasive sheet to be fastened onto the support member over the whole length thereof, and of using shorter abrasive material sheets in that it is no longer necessary to use sheets long enough to partially surround the support member thereof in order to be hooked by said springs.
  • the abrasive sheet of an orbital honing machine may be sold with the layer of resilient material already lined on the rear face thereof, so that afterwards it can be fastened onto the machine tool support member having previously peeled off the protecting silicon paper sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP19900830208 1989-05-11 1990-05-11 Support pour disque abrasif Withdrawn EP0397624A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920455A IT1229703B (it) 1989-05-11 1989-05-11 Utensile per levigatura o simili.
IT2045589 1989-05-11

Publications (2)

Publication Number Publication Date
EP0397624A2 true EP0397624A2 (fr) 1990-11-14
EP0397624A3 EP0397624A3 (fr) 1991-10-23

Family

ID=11167207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900830208 Withdrawn EP0397624A3 (fr) 1989-05-11 1990-05-11 Support pour disque abrasif

Country Status (2)

Country Link
EP (1) EP0397624A3 (fr)
IT (1) IT1229703B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728188A1 (fr) * 1994-12-14 1996-06-21 Seva Procede et dispositif de fixation d'un outil abrasif pour le polissage
WO1997033718A1 (fr) * 1996-03-15 1997-09-18 Minnesota Mining And Manufacturing Company Tampon d'appoint reversible
US6095910A (en) * 1997-11-10 2000-08-01 3M Innovative Properties Company Surface treatment article having a quick release fastener
US6142858A (en) * 1997-11-10 2000-11-07 3M Innovative Properties Company Backup pad for abrasive articles
WO2001036160A2 (fr) * 1999-11-16 2001-05-25 Klingspor Gmbh Disque rotatif consommable pour l'usinage de surfaces, dote d'un corps de base en materiau moule par injection, notamment en matiere synthetique
EP2981392A4 (fr) * 2013-04-04 2017-02-08 3M Innovative Properties Company Patin de support de disque abrasif
WO2018003767A1 (fr) * 2016-06-30 2018-01-04 キョーラク株式会社 Coussin à air et bras de robot utilisant celui-ci
EP4056316A1 (fr) * 2021-03-08 2022-09-14 Andrea Valentini Tampon de support pour un outil électrique de polissage ou de sablage guidé à la main

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524259A (fr) * 1966-09-29 1968-05-10 Rheinische Zahnbohrer Und Klei Dispositif pour la fixation de feuilles à meuler et à polir, de disques en feutre, liège ou cuir, sur des supports élastiques ou non élastiques
US4263755A (en) * 1979-10-12 1981-04-28 Jack Globus Abrasive product
US4322920A (en) * 1979-10-29 1982-04-06 Wells Raymond E Rotary floor conditioning machine attachment
EP0112405A1 (fr) * 1982-12-24 1984-07-04 Hans J. Fabritius Elément d'attache utilisable dans des machines à meuler et à polir

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524259A (fr) * 1966-09-29 1968-05-10 Rheinische Zahnbohrer Und Klei Dispositif pour la fixation de feuilles à meuler et à polir, de disques en feutre, liège ou cuir, sur des supports élastiques ou non élastiques
US4263755A (en) * 1979-10-12 1981-04-28 Jack Globus Abrasive product
US4322920A (en) * 1979-10-29 1982-04-06 Wells Raymond E Rotary floor conditioning machine attachment
EP0112405A1 (fr) * 1982-12-24 1984-07-04 Hans J. Fabritius Elément d'attache utilisable dans des machines à meuler et à polir

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728188A1 (fr) * 1994-12-14 1996-06-21 Seva Procede et dispositif de fixation d'un outil abrasif pour le polissage
WO1997033718A1 (fr) * 1996-03-15 1997-09-18 Minnesota Mining And Manufacturing Company Tampon d'appoint reversible
US5807161A (en) * 1996-03-15 1998-09-15 Minnesota Mining And Manufacturing Company Reversible back-up pad
EP1037729B1 (fr) * 1997-11-10 2002-10-09 Minnesota Mining And Manufacturing Company Bloc support pour articles abrasifs et son procede d'utilisation
US6142858A (en) * 1997-11-10 2000-11-07 3M Innovative Properties Company Backup pad for abrasive articles
US6371837B1 (en) 1997-11-10 2002-04-16 3M Innovative Properties Company Method of refining a surface
US6095910A (en) * 1997-11-10 2000-08-01 3M Innovative Properties Company Surface treatment article having a quick release fastener
WO2001036160A2 (fr) * 1999-11-16 2001-05-25 Klingspor Gmbh Disque rotatif consommable pour l'usinage de surfaces, dote d'un corps de base en materiau moule par injection, notamment en matiere synthetique
WO2001036160A3 (fr) * 1999-11-16 2001-12-13 Klingspor Gmbh Disque rotatif consommable pour l'usinage de surfaces, dote d'un corps de base en materiau moule par injection, notamment en matiere synthetique
EP2981392A4 (fr) * 2013-04-04 2017-02-08 3M Innovative Properties Company Patin de support de disque abrasif
US10335917B2 (en) 2013-04-04 2019-07-02 3M Innovative Properties Company Pad for supporting abrasive disc
WO2018003767A1 (fr) * 2016-06-30 2018-01-04 キョーラク株式会社 Coussin à air et bras de robot utilisant celui-ci
EP4056316A1 (fr) * 2021-03-08 2022-09-14 Andrea Valentini Tampon de support pour un outil électrique de polissage ou de sablage guidé à la main
CN115106934A (zh) * 2021-03-08 2022-09-27 安德里亚·瓦伦蒂尼 用于手动抛光或砂光电动工具的垫板
EP4056317A3 (fr) * 2021-03-08 2022-11-23 Andrea Valentini Tampon de support pour un outil électrique de polissage ou de sablage guidé à la main
EP4056318A3 (fr) * 2021-03-08 2022-12-14 Andrea Valentini Tampon de support pour un outil électrique de polissage ou de sablage guidé à la main

Also Published As

Publication number Publication date
IT8920455A0 (it) 1989-05-11
EP0397624A3 (fr) 1991-10-23
IT1229703B (it) 1991-09-07

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