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WO2019043618A1 - Procédé permettant la fixation d'un outil abrasif rotatif sur une broche et dispositif de fixation associé - Google Patents

Procédé permettant la fixation d'un outil abrasif rotatif sur une broche et dispositif de fixation associé Download PDF

Info

Publication number
WO2019043618A1
WO2019043618A1 PCT/IB2018/056635 IB2018056635W WO2019043618A1 WO 2019043618 A1 WO2019043618 A1 WO 2019043618A1 IB 2018056635 W IB2018056635 W IB 2018056635W WO 2019043618 A1 WO2019043618 A1 WO 2019043618A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
adapter
abrasive body
disc
protrusions
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.)
Ceased
Application number
PCT/IB2018/056635
Other languages
English (en)
Inventor
Giuseppe SOLI
Werner Ricciolini
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.)
Surfaces Technological Abrasives SpA
Original Assignee
Surfaces Technological Abrasives SpA
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 Surfaces Technological Abrasives SpA filed Critical Surfaces Technological Abrasives SpA
Priority to EP18783094.8A priority Critical patent/EP3676050A1/fr
Publication of WO2019043618A1 publication Critical patent/WO2019043618A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • 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
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • B24B29/04—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for rotationally symmetrical workpieces, e.g. ball-, cylinder- or cone-shaped workpieces

Definitions

  • the present invention relates to a rotary polishing tool.
  • the present invention refers to a rotary polishing tool provided with an abrasive body which can be engaged for polishing flat plates.
  • the present invention refers to a rotary polishing tool provided with an abrasive body which can be engaged for polishing flat plates and provided with a coupling device designed to transmit torque and to provide axial support to the abrasive body for being assembled and disassembled with an axial movement.
  • said prismatic member that normally, but not necessarily, has a cylindrical shape, but can also have a lobe shaped cross- section, is carried by a rigid disc, normally metal, which acts as a mechanical interface designed to transmit the torque upon operation of the head that carries the tool. Therefore, said disc confers to the prismatic member and, therefore to the tool as a whole, the ability to polish the surface of the material to be treated.
  • the tool comprises an adapter that enables the disc to be connected to each type of coupling present on the toolholder head of the polishing machine. Normally the connection between the two members takes place through at least a threaded connection, that has the respective axis parallel to the pivot axis of the tool.
  • connection due to its own nature, performs two functions: supports the disc, and therefore the abrasive member, and transmits the torque to the disc and thus to the abrasive prismatic member.
  • Said adapter is connected to the disc through at least a threaded connection.
  • the working life of a tool is measured in m 2 , and the average working life of a tool is 10.000m 2 , which the tool achieves in around 2 to 3 days, based on the type of work to be carried out and on the pressure that is exerted on the plates being worked.
  • polishing machines have at least 10 satellite heads, each of which has at least 6 satellites and, that each abrasive disc is connected to the satellite by at least 4 screws
  • the disassembly and reequipping step of each toolholder head of each polishing machine requires unscrewing and subsequently rescrewing at least 24 screws, one by one, and that an activity of this type imposes a machine standstill time which does not fit with the need to saturate the operating time of the machine, in order to increase its yield per time unit and therefore enable competitive prices useful for generating sufficient margins that allow to develop such activity and remain on the market in a profitable manner.
  • the reequipping step is normally completed by separating the metal disc from the abrasive member, normally connected by gluing, before its relative disposal, in order to both comply with regulations on differentiated collection of industrial waste, and for recovering expenses, given that the metal discs can be sold individually on the market.
  • new generation tools usable equipping the heads of polishing machines for flat plates, when these machines are provided with groups of tools rotatable around axes perpendicular to the plates/tiles to be treated, so as to saturate the working capacity of these machines and, the problem of substantially changing the manner in which one proceeds with the reequipping of the heads.
  • the aim of the applicant is, on the other hand, to obviously widen his/her market as well as facilitate the recovery of noble materials such as steel without burdening the activity of the operators.
  • Rotary polishing tools are known from the documents of the prior art CN 205 630 308 U, US 2015/251295 Al and WO 2010/071618 A1.
  • the present invention relates to a rotary polishing tool.
  • the present invention refers to a rotary polishing tool provided with an abrasive body which can be used for polishing flat plates.
  • the present invention refers to a rotary polishing tool provided with an abrasive body usable for polishing flat plates and provided with a coupling device designed to transmit torque and provide axial support to the abrasive body so that it can be assembled and disassembled with an axial movement.
  • An aim of the present invention is to achieve a rotary polishing tool that is both free of the inconveniences of the prior art described above, as well as having a simple construction, long lasting, cheap and the parts of which are recyclable at very low costs.
  • a rotary tool is provided, the main characteristics of which will be described in at least one of the claims that follow.
  • a further aim of the present invention is to provide a method for equipping a rotary polishing toolholder head for a polishing machine for polishing flat surfaces that are both easy and quick to implement.
  • a method is furthermore provided for equipping a rotary polishing toolholder head of a polishing machine for flat surfaces the main characteristics of which will be described in one of the claims that follow.
  • FIG. 1 is an elevation side view of a machine that carries a plurality of rotary tools according to the present invention
  • FIG. 2 is an exploded view of a detail of figure 1;
  • FIG. 3 is an exploded view of a first variation of figure 2;
  • FIG. 4 is a view of a structural detail of a second variation of figure 2.
  • number 1 denotes, as a whole, a plurality of rotary tools 1 for a multi-tool head H of a polishing machine MU for flat plate or tile surfaces L.
  • the tool that in figure 1, is represented having an axial-symmetric shape in respect to its own axis A, has in particular a cylindrical shape.
  • the tool 1 has a base 10 that rigidly carries an abrasive body 20 through an adhesive connection, or the like, and comprises an adapter 30 arranged for connecting the base 10 to a respective rotating spindle M of the head H around a pivot axis A.
  • each tool 1 comprises coupling members 40, designed to connect the abrasive body 20 to the adapter 30 through the respective annular edge 12.
  • Said coupling members 40 comprise, in particular, an annular fastening member 42 shaped in a similar manner as the annular edge 12 in order to be coup1able with the latter in a conjugated manner, as shown in figure 1.
  • the annular member 42 has a service hole 420 axially engageable by the abrasive body 20 for keeping the respective annular edge 12 in contact with the adapter 30 in a sandwich-like manner.
  • the base 10 comprises a flat disc 10' made of a plastic material and the annular member 42 comprises a substantially circular flat ring 42' the outer diameter of which is substantially identical to an outer diameter of the disc 10', whereas the outer diameter approximates, by excess, an outer diameter of the annular body 20.
  • the annular edge 12 has a plurality of first cylindrical through holes 120, that are peripherally distributed in a substantially consistent manner.
  • the adapter 30 is also made of a metal material of the ferromagnetic type and so is the ring 42' .
  • the latter also has a plurality of second cylindrical through holes 420, that are substantially identical and distributed similarly to the first holes 120, so that the first holes 120 and the second holes 420 are positionable so as to axially face each other.
  • the adapter 30 also has a first outer edge 32 that is provided with a plurality of first cylindrical members 3200, each of which is provided with an end 3201 made of a magnetic material and connected by screws to a respective body 3203.
  • each first cylindrical member 3200 is delimited by a cylindrical surface that approximates, by defect, a diameter of the first holes 120 and of the second holes 420 and is made of a magnetic material.
  • the cylindrical members 3200 achieve first protrusions 320 that are arranged to engage first holes 120 and the second holes 420, so that the adapter 30 is able to transmit torque to the disc 10' and, definitively, to the same abrasive body 20. Due to this, the axial extension of the first cylindrical members 3200 exceeds a length calculated as a sum of the thicknesses of the annular edge 12 and of the ring 42' .
  • the adapter 30 and the ring 42' in metal material and by providing the adapter 20 with first cylindrical members 3200, each provided with a magnetic end 3201, it is possible to axially counteract the action of gravity acting on the abrasive body 20 by supporting it in a sandwich-like manner between the adapter 30 and the ring 42' through the respective annular edge 12.
  • the use of bodies 3202 of the first cylindrical members 3200 allows to transfer the torque from the spindle M to the abrasive body 20.
  • the method comprises a first step of arranging the disc 10' (that carries the abrasive body 20) facing the adapter 30 associated with the spindle M of a polishing machine by carrying the annular edge 12 (of the same disc 10') with the respective first holes 120 in axial projection with the first cylindrical members 3200.
  • This step is followed by a step of axially moving the disc 10 '/the abrasive body 20 in order to position the first cylindrical members 3200 inside the first holes 120 : until bringing the corresponding disc 10' into abutment against the adapter 30.
  • the method therefore comprises a step of arranging the ring 24 ' facing the respective second holes 420 in projection with the first cylindrical members 3200; a step of positioning the first cylindrical members 3200 inside the second holes 420 of the ring 42' until bringing the latter into axial abutment against the annular edge 12. At this point the magnetic interaction between the first cylindrical members 3200 and the ring 42* keeps the disc 10' and therefore the abrasive body 20 in an axially correct position for carrying out the polishing operation.
  • the first cylindrical members 3200 determine the support of the disc 10* and the rotation of the ring 42' and of the intermediate annular edge 12 and, therefore of the abrasive body 20 rigidly connected thereto.
  • the disassembly method of the discs 10' provided with abrasive bodies 20 is carried out backwards, and will be completed by a step of peeling the abrasive body 20 from the disc 10' to which it was previously glued in a simple and practical manner.
  • the adapter 30 and the ring 42' can be modified in terms of shape, leaving the role of the driving member and driven member unaltered.
  • the adapter 30, made with an annular part overlapping a disc has a plurality of third cylindrical through holes 322 (dual functioning of the first cylindrical members 3200) substantially identical and distributed similarly to the first holes 120 and the annular body 42' has a plurality of second protrusions 422 (dual functioning of the holes 420), each of which is shaped similarly to the first cylindrical members 3200 for engaging the first holes 120 and the third holes 322, thus comprises a second cylindrical member 4220 with a diameter that approximates, by defect, a diameter of the first holes 120 and the third holes 322 and has at least a respective end made of magnetic material.
  • the adapter 30 and the disc 10' have angular reference elements on the respective opposite faces for limiting the angular orientation of the disc 10' in respect to the adapter 30 to only two geometrically equivalent positions, as they are symmetrical in a polar manner.
  • the adapter 30 has a pair of ridges 31 arranged symmetrically in respect to the axis A (only visible in figure 3 for simplifying the drawing operation with a broken line) and to the disc 10', a pair of holes 101 diametrically opposite at the same radial distance of the ridges 31 and shaped in a substantially conjugated manner with the latter by shape coupling.
  • the method that can be followed for reequipping a spindle M with a substantially identical tool to the last one described above comprises a first step of arranging the abrasive body 20/disc 10' facing the adapter 30 bringing the first holes 120 of the corresponding annular edge 12 to face the third holes 322 of the adapter 30. Said step is preceded by a step of opposing and interpenetrating, so as to face, the two holes 101 of the disc 10' and the two ridges 31 of the adapter 30.
  • the method further comprises a second step of fitting the ring 42' onto the abrasive body 20 with the second cylindrical members 4220 inside the first holes and third holes 322 until bringing the disc 10' into axial abutment with the adapter 30 and the ring 42' .
  • an axial limitation of the movement of the abrasive member 20 in respect to the adapter 30 could be determined by achieving a connection through interference transversal to the axis A between the ring 42' and the first cylindrical members 3220, or the second cylindrical members 4220, by making a circular groove 321 in said cylindrical members, as shown in figure 4.
  • Said groove 321 which must be measured in height, has a longitudinal extension equal to the thickness of the ring 42' and must be made spaced from the adapter 30 that approximates the thickness of the annular edge 12 in order to determine the packet connection of the disc 10' to the adapter 30 upon an axial rotation of the disc 10' around an axis A, either clockwise or anticlockwise, so that the ring 42' is designed to become an axial abutment for the abrasive body 20.
  • the correct locking of the disc 10' and therefore of the abrasive body 20 in respect to the head H is guaranteed independently of the rotation direction conferred by the heads H to the tools 1, as the grooves 321 are angular.
  • each type of tool 1 described above is manufactured with parts, made of a non-metal material and subject to wear, therefore at limited costs and according to logics of energy recovery for the simple peeling of the abrasive body 20 from the disc 10', which can be implemented in a simple and quick manner.

Landscapes

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

Abstract

L'invention concerne un outil rotatif (1) présentant une base (10) à laquelle un corps abrasif (20) est solidarisé; un adaptateur (30 ) étant agencé pour relier la base (10) à une broche (M) tournant autour d'un axe de pivot (A) d'une machine-outil (MY); la base (10) présentant un bord annulaire (12) qui fait saillie vers l'extérieur par rapport au corps abrasif (20); des moyens d'accouplement (40) étant conçus pour relier le corps abrasif (20) à l'adaptateur (30) à travers le bord annulaire (12).
PCT/IB2018/056635 2017-08-31 2018-08-30 Procédé permettant la fixation d'un outil abrasif rotatif sur une broche et dispositif de fixation associé Ceased WO2019043618A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18783094.8A EP3676050A1 (fr) 2017-08-31 2018-08-30 Procédé permettant la fixation d'un outil abrasif rotatif sur une broche et dispositif de fixation associé

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000097984 2017-08-31
IT102017000097984A IT201700097984A1 (it) 2017-08-31 2017-08-31 Utensile levigatore

Publications (1)

Publication Number Publication Date
WO2019043618A1 true WO2019043618A1 (fr) 2019-03-07

Family

ID=60991274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/056635 Ceased WO2019043618A1 (fr) 2017-08-31 2018-08-30 Procédé permettant la fixation d'un outil abrasif rotatif sur une broche et dispositif de fixation associé

Country Status (3)

Country Link
EP (1) EP3676050A1 (fr)
IT (1) IT201700097984A1 (fr)
WO (1) WO2019043618A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116766033A (zh) * 2023-08-24 2023-09-19 长沙正圆动力科技有限责任公司 一种活塞环表面抛光装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117001514B (zh) * 2023-10-07 2023-12-08 江苏攀森智能科技有限公司 一种电机壳体内孔加工用的抛光工具及其安装方式

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010071618A1 (fr) * 2008-12-16 2010-06-24 Dynabrade, Inc Ensemble effaceur pour outil rotatif
US20150251295A1 (en) * 2014-03-07 2015-09-10 Prime Supply Inc. Grinding-disc device for power tools
CN205630308U (zh) * 2016-05-24 2016-10-12 吴德恩 盘珠抛光机及其电机与抛光盘的连接装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010071618A1 (fr) * 2008-12-16 2010-06-24 Dynabrade, Inc Ensemble effaceur pour outil rotatif
US20150251295A1 (en) * 2014-03-07 2015-09-10 Prime Supply Inc. Grinding-disc device for power tools
CN205630308U (zh) * 2016-05-24 2016-10-12 吴德恩 盘珠抛光机及其电机与抛光盘的连接装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116766033A (zh) * 2023-08-24 2023-09-19 长沙正圆动力科技有限责任公司 一种活塞环表面抛光装置
CN116766033B (zh) * 2023-08-24 2023-11-28 长沙正圆动力科技有限责任公司 一种活塞环表面抛光装置

Also Published As

Publication number Publication date
IT201700097984A1 (it) 2019-03-03
EP3676050A1 (fr) 2020-07-08

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