EP3437800B1 - Tragevorrichtung für schleifelemente - Google Patents

Tragevorrichtung für schleifelemente Download PDF

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Publication number
EP3437800B1
EP3437800B1 EP18186181.6A EP18186181A EP3437800B1 EP 3437800 B1 EP3437800 B1 EP 3437800B1 EP 18186181 A EP18186181 A EP 18186181A EP 3437800 B1 EP3437800 B1 EP 3437800B1
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EP
European Patent Office
Prior art keywords
holes
supporting device
supporting
supporting body
connecting element
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EP18186181.6A
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English (en)
French (fr)
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EP3437800A1 (de
Inventor
Claudio Mazzolini
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.)
Abrex-System Srl
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Abrex-System Srl
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Publication of EP3437800A1 publication Critical patent/EP3437800A1/de
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Publication of EP3437800B1 publication Critical patent/EP3437800B1/de
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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
    • 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
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • 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
    • B24B55/105—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with oscillating tools

Definitions

  • the invention relates to supporting devices for abrasive elements to be mounted on orbital or random orbital sender machines.
  • the invention relates to a supporting device, so called backing pad, adapted to support an abrasive-material disc and coupleable to a tool machine which makes it rotate.
  • a supporting device is for example disclosed in Document WO2015119521 A1 , on which the preamble of claim 1 is based.
  • Known supporting devices or backing pads typically comprise a generally disc-shaped supporting body made of plastics or metal material and a connecting element, disc-shaped too, fixed to a lower face of the body and made of a yielding and elastic material, generally an elastomeric material or alike.
  • An abrasive-material disc is removably fixed to the connecting element, for instance by means of a repositionable adhesive or glue or by means of a hooking system of the Velcro® type or alike.
  • a coupling element typically a pin, is provided on the upper face of the supporting body for connecting a rotation chuck of the sander machine.
  • the backing pad and the abrasive disc are provided with a plurality of through holes. More precisely, the body and the connecting element are provided with a variable number of through holes, six or more, arranged circumferentially about a rotation axis of the backing pad and having also different sizes. For proper passage of air and sucked dusts, the through holes of the body and the fixing element are aligned and coaxial. For the same reason, also the through holes provided on the abrasive disc must coincide with the backing pad ones.
  • the backing pad through holes come out on the upper face of the body at and inside a suction sleeve of the sander machine, such sleeve surrounding the rotation chuck and forming an internal chamber connected to a suction system.
  • Air suction also allows to cool the abrasive disc which can reach high temperatures during the usage.
  • a disadvantage of the known backing pads is that for a correct dust suction the abrasive disc should be mounted in such a way that its holes are aligned and coincide with the backing pad ones. However while in use, due to mechanical stresses, the abrasive disc may move and rotate modifying the alignment of the holes.
  • the through holes made in the backing pad do not allow to cool the latter efficiently.
  • the temperature increase may compromise the connection between the body and the connecting element, even resulting in the detachment thereof.
  • the connection between the two parts is in fact generally carried out by means of glues and abrasive adhesives, which can deteriorate at high temperatures. High temperatures can further damage also the abrasive disc material or limit the duration and/or the performance thereof.
  • the backing pad body has an upper portion provided with a cavity and a disc-shaped lower portion which closes the cavity such as to form the inner chamber.
  • the lower disc may be holed even at one of its peripheral crowns similarly to the yielding connecting element fixed thereto for the support of the abrasive disc.
  • the upper portion of the body has a plurality of through holes at its central portion for being connected to a standard suction sleeve of the sander machines. Thereby it is possible to suction air on the whole abrasive disc surface with no need to use increased suction sleeves.
  • a disadvantage of such backing pads is that in use the peripheral annular portion of the inner chamber tends to shut due to dust accumulation: suctioned air in fact tends to pass mainly through the lower disc holes and the inner chamber portion which face the outlet holes made in the central portion of the upper portion of the body, also because the height or thickness of the inner chamber is necessarily limited. As a matter of fact, in order not to increase excessively the backing pad thickness, the chamber height must be reduced. As known, increase of the backing pad thickness implies increase of vibrations and oscillations thereof during usage, i.e. less precision and efficiency in operations.
  • Document WO 2011/021087 discloses a supporting device or backing pad for abrasive elements in form of sheets comprising a first disc-shaped body which has a rear surface arranged for the attachment to a tool machine and which is crossed in its thickness by first section openings intended to be connected to a suction device when in use.
  • the backing pad comprises a second disc-shaped body associated to a front surface of the first body and which has a front surface substantially flat on which a flat abrasive element can be laid.
  • the second body is crossed in its thickness by a plurality of second suction openings communicating with the first suction openings.
  • the second suction openings are densely distributed substantially on the whole area of the front surface or at least on a portion thereof.
  • the front surface face, in the portions without the second suction openings has an outwardly open channel of the second disc-shaped body and communicating with the second suction openings.
  • Document WO 2015/119521 discloses a backing pad with slots for sanding discs with multiple holes, comprising un upper portion, an intermediate portion and a lower portion joined between them by a fixing system.
  • the upper portion with truncated-cone shape, comprises suction holes and a central hole.
  • the intermediate portion comprises suction slots and a central hole and it is provided in its rear face with suction channels delimited by raised walls.
  • the lower portion with truncated-cone shape, and wherein the intermediate portion is mounted, comprises slots, a central hole and suction slots arranged in concentric and equidistant rings and with a size increasing from the centre to the periphery.
  • Document WO2012/019286 discloses a supporting device or backing pad for use with a surface treatment apparatus which includes a support plate having a fixing plate for a buffer and a support buffer having a first face and a second face.
  • the supporting device can also include a porous interface layer provided with an external face.
  • a layer of a first adhesive is arranged on the external face and extends into the interface layer and a layer of a second adhesive is applied on the layer of the first adhesive.
  • the second adhesive may be selected to releasably bond with an abrasive sheet.
  • the first and second adhesive may be selected such that the adhesive bond between the first adhesive and the second adhesive is stronger than the adhesive bond between the second adhesive and the abrasive sheet.
  • An object of the invention is improving known supporting devices or backing pads for abrasive elements to be mounted on orbital or random orbital sander machines.
  • Another object is providing a supporting device which allows to efficiently and effectively suction dust generated during abrasion, sanding, grinding operations and in the meantime cooling optimally the device body and above all the abrasive element.
  • a further object is implementing a supporting device which can be easily configured while being assembled for coupling with different types of abrasive elements and having in particular different hole configurations (number, size, arrangements).
  • Still another object is providing a particularly robust and strong supporting device even for intensive use.
  • Another further object is implementing a supporting device which can be used efficiently and high-performing on sander machines provided with standard suction sleeves.
  • FIG. 8 it is illustrated a supporting device 1 of the invention suitable to support an abrasive element 30 and associable with an orbital or random orbital sander machine 50, of the type used to perform sanding, milling, abrasion, polishing processing on surfaces and objects.
  • the supporting device 1 also called backing pad, includes a supporting body 2 comprising an external face 21 and a central part 3 provided with a series of first through holes 11, and a connecting element 6 fixed to the supporting body 2 and arranged to support the abrasive element 30.
  • the connecting element 6 comprises a central portion 7 provided with a series of second through holes 12 facing the series of first through holes 11 of the supporting body 2.
  • the latter also comprises an annular cavity 5 made in a peripheral part 4 of the aforesaid supporting body 2, in particular on a inner face 22 opposite to the external face 21, and around the central part 3.
  • the annular cavity 5 is provided with a series of third through holes 13 coming out at the external face 21.
  • the backing pad 1 further comprises a closing element 10 that coupleable to the supporting body 2 such as to close the annular cavity 5 and form an inner annular chamber 16.
  • the closing element 10 is provided with a series of fourth through holes 14 facing a series of fifth through holes 15 made on a peripheral annular portion 8 of the connecting element 6.
  • the first through holes 11 and the third through holes 13 of the supporting body 2 come out at a coupling portion 21a of the external face 21 of the latter arranged to engage to an air and dust suction system of the sander machine 50. More precisely and as shown in figure 2 , the coupling portion 21a is inside a suction chamber 52 formed with the same supporting body 2 by a suction hood 51 of the sanding air and sanding dust suction system of the sander machine 50.
  • the abrasive element 30 comprises at least a series of sixth through holes 31 and a series of seventh through holes 32 almost corresponding and aligned respectively to second through holes 12 and fourth through holes 14 of the connecting element 6.
  • the supporting body 2 and the closing element 10 are made of plastics, in particular of high-density plastics.
  • the connecting element 6 is on the contrary made of yielding and flexible material, for example elastomeric material, in particular rubber, for elastically supporting the abrasive element while it is being adapted to the shape of the surface to be processed.
  • the connecting element 6, in addition to being fixed to the inner face 22 of the supporting body 2 is also fixed to the closing element 10. Fixing is made with means of the known type, such as for example glues or adhesives or by means of ultrasound welding.
  • the first through holes 11 of the supporting body 2 and the second through holes 12 of the connecting element 6 are almost aligned and coaxial to ensure an excellent passage of air and dust sucked by the suction system of the sander machine 50 while in use, as better explained in the hereinafter description.
  • the first through holes 11 and the second through holes 12 thus form a first suction central path for air and sanding dust at a central portion of the backing pad 1 and of the abrasive element 30.
  • the first through holes 11 are conical, and in particular divergent, that is with an increasing transverse section, directed towards the external face 21. Such conicity of the fist through holes 11 allows in fact an increase of air suction speed.
  • the first through holes 11 are almost cylindrical.
  • the fourth through holes 14 of the closing element 10 and the fifth through holes 15 of the connecting element 6 are themselves preferably almost substantially aligned or coaxial.
  • the third, fourth and fifth through holes 13, 14, 15 along with the inner peripheral chamber 16 form a peripheral path of air and dust suction at a peripheral portion of the backing pad 1 and of the abrasive element 30.
  • each series of through holes 11, 12, 13, 14, 15 each comprises a plurality of respective through holes having a same respective shape and size, in particular same circular shape and same diameter. It is however possible that each series of through holes comprises through holes having different sizes and/or shapes (circular, elliptical,).
  • Each series of through holes further comprises a respective number of holes (equal or different) arranged according to an arrangement or distribution adapted to secure an optimal flow of air and sanding dust being sucked without compromising in any case the mechanical strength and hardness of the various components, that is of the supporting body 2, of the connecting element 6 and of the closing element 10.
  • the third through holes 13 are arranged along a circumference around the central portion 3 and are greater in size than the first holes 11 in order to increase suction and the passage of air and dust through the inner chamber 16, as better explained in the hereinafter description.
  • the closing element 10 can be selected in a group of closing elements having different configurations of the fourth through holes 14 and can be coupled to the supporting body 2 according to features and configurations of the through holes of the abrasive element 30 to be used.
  • the latter of the known type and not described in detail, generally comprises an abrasive-material disc provided with a plurality of through holes of equal or different sizes and arranged such as to ensure the best suction of dusts generated during processing.
  • the supporting body 2 has a disc shape which is almost circular, in particular axial-symmetrical with respect to the central axis X about which the whole backing pad 1 rotates when it is connected and moved by the sander machine 50.
  • the supporting body 2 further has a decreasing thickness starting from the central part 3 and towards the peripheral part 4.
  • the annular cavity 5 has an elongated rectangular-shaped section and has an inner shoulder 25 and an external shoulder 24, both of them circular-shaped, adapted to receive and support the closing element 10.
  • the latter has flat and annular shape, in particular circular crown shape.
  • the annular cavity 5 comprises a plurality of support pins 27 arranged around the central part 3. More precisely, each support pin 27 has a tapered end 27a arranged for engaging a respective fourth through hole 14 of the closing element 10. The portion of the tapered end 27a coming out from the hole of the closing element 10 can be rebutted or plastically deformed such as to tightly block the closing element 10 to the supporting body 2, in one assembly step of the backing pad 1.
  • the supporting body 2 comprises on its inner face 22 opposite to the external face 21 and at the central part 3 a further cavity 9 which is in flow connection with the external face 21 by means of a plurality of slots 17 and respective through openings 18, 19, these latter in particular coming out at the coupling portion 21a of the external face 21.
  • the further cavity 9 is faced and connected to a central hole 26 of the connecting element 6.
  • the further cavity 9 is connected to the external face 21 by means of four holes 17 and four respective first through openings 18, arranged spaced apart angularly about the central axis X.
  • First and second through openings 18, 19 and the further cavity 9 of the supporting body 2 and the central hole 26 of the connecting element 6 form a second central air and dust suction path at the central portion of the backing pad 1 and of the abrasive element 30, in particular about the central axis X.
  • the further cavity 9 further comprises a central opening 29 for coupling the backing pad to the sander machine 50, in particular by coupling means 20.
  • the central opening 29 is for example a respective circular hole made on the bottom hole 9a of the additional cavity almost coaxial to the central axis X and coming out on the external face 21.
  • the packing pad 1 comprises coupling means 20 which allow to reversibly couple the backing pad thereof to the sander machine 50.
  • Coupling means comprise, in particular, a pin 20 fixed to the central part 3 of the supporting body 2, extending from the external face 21 and arranged for engaging to chuck means of the sander machine 50. More precisely, the pin 20 is inserted in the central opening 29 and has a shaped head 20a which is fitted and fixed in the further cavity 9.
  • Fixing means of the known type are provided to join the abrasive element 30 to the connecting element 6, the aforementioned fixing means comprising for example adhesives or reversible hooking systems of Velcro ® type.
  • the backing pad 1 of the invention bearing an abrasive element 30 fixed to the connecting element 6 is rotated about the central axis X of the sander machine 50 onto which it is mounted.
  • the backing pad 1 structure of the invention air and sanding dust are efficiently suctioned and removed by the abrasive element 30 both in one of its central portion and in one of its peripheral portion.
  • the first through holes 11 of the supporting body 2 and second through holes 12 of the connecting element 6 form a first central path for the passage of air and dust, at the central part 3 of the supporting body 2.
  • the sanding dust extraction in the central portion of the backing pad 1 is eased by the conicity of the first through holes 11 which allows an increase in air suction speed.
  • Dust extraction is further eased by the through openings 18, 19 and by the further cavity 9 of the supporting body 2 and by the central hole 26 of the connecting element 6 which form the second central suction path always at the central portion of the backing pad 1 and of the abrasive element 30, in particular around the central axis X, i.e. in the area where there is the majority of dust accumulation.
  • Dust suction and removal from the peripheral portion of the backing pad 1 and of the abrasive element 30 is on the contrary efficiently carried out by the third through holes 13, by the inner peripheral chamber 16 of the supporting body 2, by the fourth through holes 14 of the closing elements 10 and by the fifth through holes 15 of the connecting element 6.
  • the inner peripheral chamber being provided with respective and separate through holes (series of third through holes 13) which make it communicate with the suction chamber 52 formed by the suction sleeve 51 of the sander machine 50, is subject to a constant suction flow and it is not subject to blockages or obstructions caused by dust accumulation.
  • the closing element 10 also advantageously contributes to such a result as it can be selected with a suitable configuration of the fourth through holes 14 such as to make the backing pad 1 suitable for a specific type of abrasive element 30 and/or of operative conditions.
  • the closing element 10 can be selected during the assembly of the backing pad 1 according to the physical-chemical characteristics of the abrasive element and/or of its through holes configuration (number, size, arrangement).
  • the optimal air suction through the backing pad 1 of the invention also allows to cool the latter efficiently and in particular the abrasive element 30 such as to avoid damage to the material it is made of and increase the duration and/or the performance thereof.
  • the backing pad 1 of the invention though having an inner peripheral chamber 16 and a plurality of through holes, is particularly strong and robust as it comprises a supporting body 2 made of a single piece and having a peripheral portion 4 and above all a central portion 3 arranged about the central axis X which the connecting element 6 is directly fixed with.
  • the closing element 4 coupled and fixed to the inner face 22 of the supporting body 2 for forming the inner peripheral chamber 16 contributes to reinforce the backing pad structure 1.
  • the backing pad 1 of the invention can be efficiently used and high-performing on sander machines provided with standard suction sleeves and not with the enlarged type.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (13)

  1. Stützvorrichtung (1), die ausgebildet ist, ein abrasives Element (30) zu stützen und einer Schwing- oder Exzenter-Schleifmaschine (50) zugeordnet werden kann, enthaltend:
    - einen Stützkörper (2) umfassend eine Außenfläche (21) und einen zentralen Teil (3), der mit einer Reihe von ersten Durchgangslöchern (11) versehen ist;
    - ein Verbindungselement (6), das an dem Stützkörper (2) fixiert und angeordnet ist, um das abrasive Element (30) zu stützen, wobei das Verbindungselement (6) einen zentralen Bereich (7) umfasst, der mit einer Reihe von zweiten Durchgangslöcher (12) versehen ist, die der Reihe von ersten Durchgangslöchern (11) zugewandt sind;
    - ein Schließelement (10);
    dadurch gekennzeichnet, dass der Stützkörper (2) einen ringförmigen Hohlraum (5) umfasst, der in einem peripheren Teil (4) des Stützkörpers (2) um den zentralen Teil (3) herum hergestellt ist und mit einer Reihe von dritten Durchgangslöchern (13) versehen ist, wobei das Schließelement (10) mit dem Stützkörper (2) koppelbar ist, um den ringförmigen Hohlraum (5) zu schließen und eine innere ringförmige Kammer (16) zu bilden, wobei das Schließelement (10) mit einer Reihe von vierten Durchgangslöchern (14) versehen ist, die einer Reihe von fünften Durchgangslöchern (15) zugewandt sind, die an einem peripheren ringförmigen Bereich (8) des Verbindungselements (6) hergestellt sind, wobei die ersten Durchgangslöcher (11) und die dritten Durchgangslöcher (13) des Stützkörpers (2) aus einem Kopplungsbereich (21a) der Außenfläche (21) herauskommen, die ausgebildet ist, mit einem Luft-und-Schleifstaub-Absaugsystem der Schleifmaschine (50) einzugreifen.
  2. Stützvorrichtung (1) nach Anspruch 1, wobei die ersten Durchgangslöcher (11) des Stützkörpers (2) und die zweiten Durchgangslöcher (12) des Verbindungselements (6) fast ausgerichtet sind.
  3. Stützvorrichtung (1) nach Anspruch 1 oder 2, wobei die ersten Durchgangslöcher (11) konisch sind, insbesondere zu der Außenfläche (21) hin divergieren.
  4. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei die vierten Durchgangslöcher (14) des Schließelements (10) und die fünften Durchgangslöcher (15) des Verbindungselement (6) fast ausgerichtet sind.
  5. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei das Schließelement (10) auswählbar ist in einer Gruppe von Schließelementen, die verschiedene Konfigurationen von vierten Durchgangslöchern (14) aufweisen und mit dem Stützkörper (2) gemäß Merkmalen und Konfiguration von Durchgangslöchern des zu verwendenden abrasiven Elements (30) verbindbar ist.
  6. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei der ringförmige Hohlraum (5) eine innere Schulter (25) und eine äußere Schulter (24) aufweist, die angeordnet sind, um das Schließelement (10) zu empfangen und zu stützen.
  7. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei der ringförmige Hohlraum (5) eine Mehrzahl Stützstiften (27) umfasst, die um den zentralen Teil (3) herum angeordnet sind, um das Schließelement (10) zu stützen, wobei insbesondere jeder Stützstift (27) ein verjüngendes Ende (27a) aufweist, das angeordnet ist, mit einem jeweiligen vierten Durchgangsloch (14) des Schließelements (10) einzigreifen.
  8. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei der Stützkörper (2) eine Innenfläche (22) umfasst, die der Außenfläche (21) gegenüber liegt und einen weiteren Hohlraum (9), der an der Innenfläche (22) an dem zentralen Teil (3) hergestellt ist, wobei der weitere Hohlraum (9) mit der Außenfläche (21) mittels einer Mehrzahl von Schlitzen (17) und jeweiligen Durchgangsöffnungen (18, 19) verbunden ist, die an dem Kopplungsbereich (21a) der Außenfläche (21) herauskommen, wobei der weitere Hohlraum (9) einem zentralen Loch (26) des Verbindungselements (6) zugewandt und damit verbunden ist.
  9. Stützvorrichtung (1) nach Anspruch 8, wobei der weitere Hohlraum (9) eine zentrale Öffnung (29) zur Kopplung mit der Schleifmaschine (50) umfasst, insbesondere durch Kopplungsmittel (20).
  10. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, umfassend Kopplungsmittel (20) zum umkehrbaren Koppeln der Stützvorrichtung (1) mit der Schleifmaschine (50), wobei das Kopplungsmittel einen Stift (20) umfasst, der an dem zentralen Teil (3) des Stützkörpers (2) fixiert ist, sich von der Außenfläche (21) des Stützkörpers (2) erstreckt und angeordnet ist, um mit Spannfuttermitteln der Schleifmaschine (50) einzugreifen.
  11. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei der Stützkörper (2) und das Schließelement (10) aus Plastik hergestellt sind.
  12. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, wobei das Verbindungselement (6) auch an dem Schließelement (10) fixiert ist.
  13. Stützvorrichtung (1) nach jedem vorhergehenden Anspruch, umfassend Fixierungsmittel zum Verbinden des abrasiven Elements (30) mit dem Verbindungselement (6), wobei das abrasive Element (30) zumindest eine Reihe von sechsten Durchgangslöchern (31) und eine Reihe von siebten Durchgangslöchern (32) umfassen, die jeweils fast mit den zweiten Durchgangslöchern (12) und mit den fünften Durchgangslöchern (15) des Verbindungselements (6) übereinstimmen.
EP18186181.6A 2017-07-31 2018-07-27 Tragevorrichtung für schleifelemente Active EP3437800B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000087962A IT201700087962A1 (it) 2017-07-31 2017-07-31 Dispositivo di supporto per elementi abrasivi

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Publication Number Publication Date
EP3437800A1 EP3437800A1 (de) 2019-02-06
EP3437800B1 true EP3437800B1 (de) 2020-04-15

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EP (1) EP3437800B1 (de)
ES (1) ES2805076T3 (de)
IT (1) IT201700087962A1 (de)
PT (1) PT3437800T (de)

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Publication number Priority date Publication date Assignee Title
CN111015530A (zh) * 2019-11-28 2020-04-17 盐城工学院 一种钛基复合材料铣削加工铣刀用打磨轮

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Publication number Priority date Publication date Assignee Title
ITMI20091483A1 (it) * 2009-08-17 2011-02-18 Cemom Moatti Supporto di elementi abrasivi in forma di foglio per utensili o macchine utensili
WO2012020275A1 (en) * 2010-08-10 2012-02-16 Miksa Marton Sanding apparatus
PT107454A (pt) * 2014-02-06 2015-08-06 Indasa Indústria De Abrasivos S A Prato com rasgos para discos de lixagem multifuros

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ES2805076T3 (es) 2021-02-10
PT3437800T (pt) 2020-07-14
EP3437800A1 (de) 2019-02-06
IT201700087962A1 (it) 2019-01-31

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