[go: up one dir, main page]

WO2020084379A1 - Dispositif d'accrochage pour outils de travail - Google Patents

Dispositif d'accrochage pour outils de travail Download PDF

Info

Publication number
WO2020084379A1
WO2020084379A1 PCT/IB2019/058727 IB2019058727W WO2020084379A1 WO 2020084379 A1 WO2020084379 A1 WO 2020084379A1 IB 2019058727 W IB2019058727 W IB 2019058727W WO 2020084379 A1 WO2020084379 A1 WO 2020084379A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
shaped
backing pad
fact
flat
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/IB2019/058727
Other languages
English (en)
Inventor
Vittorio Bovone
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.)
BOVONE DIAMOND TOOLS Srl
Original Assignee
BOVONE DIAMOND TOOLS Srl
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 BOVONE DIAMOND TOOLS Srl filed Critical BOVONE DIAMOND TOOLS Srl
Publication of WO2020084379A1 publication Critical patent/WO2020084379A1/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
    • 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
    • B24D7/06—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 with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports

Definitions

  • This invention refers to a hooking device for working tools for flat sheets.
  • this invention refers to a hooking device for working tools for flat glass sheets or flat crystal glass sheets, mirror glass sheets, or also flat marble, granite and similar stone material slabs, in order to use such tools to work along the edges of flat sheets to carry out grinding, edging, bevelling (that is, a process aimed at creating a typically less than 90-degree bevel along an edge) and similar works along the edges of the above-said flat sheets.
  • this invention refers to flat sheets and preferably, but not limited to, flat glass sheets, a material that is widely used in a number of fields, for many and varied purposes.
  • flat glass is used in both civil and industrial applications for glass walls, fagade cladding, decorations and floors, as well as to manufacture furnishings and the like.
  • flat glass can be single-layer or multi-layer glass, when it is formed by overlapping two or more flat glass sheets, sometimes interposed by polyvinyl-butyral or PVB films, or films of other known engineering plastics used to manufacture shatter-proof or bullet-proof glasses or the like.
  • the above-mentioned works are performed using so-called grinding wheels, which are installed on grinding machines that move the sheets in a straight line, and such grinding machines can perform the above-said works along the edges with the flat sheets placed in either a vertical or horizontal position (the latter are known as 'bilateral' grinding machines) .
  • Such grinding wheels are typically metal and resin-bonded diamond wheels, comprised of a 'cup' element (forming the wheel body) of variable diameter (usually a diameter of 150mm) , and an abrasive part to grind the sheet, placed along the perimeter edge of the cup element. Furthermore, the cup element has a hole in the bottom (on the opposite side to the abrasive part), which is aimed at providing a coupling element to a spindle motor shaft, onto which the wheel is fitted using a bolt and a lock nut, or another known retaining system.
  • the cup element that forms the wheel body can be made of metal (e.g. aluminium, weighing around one kilogram) or resin (weighing around 650 grams) .
  • the abrasive part of the wheel must be replaced with a new one to ensure the quality of the work; typically, the replacement requires two operators and approx. 15 minutes; this represents a drawback in terms of increase in production costs, given that the use of labour force, as well as significant working time and machine downtime, is required.
  • the purpose of this invention is to avoid the above- mentioned drawbacks.
  • the purpose of this invention is to provide a hooking device for working tools for flat sheets that allows simplifying tool replacement operations in the event of wear/tear/breakage, or the like, affecting the abrasive part of the grinding wheel.
  • An additional purpose of this invention is to provide a hooking device that does not require to keep many different types of wheels in stock, depending on the types of machines they are intended for.
  • An additional purpose of this invention is to provide users with a hooking device for working tools for flat sheets that ensures long service life and resistance over time, as well as being easily and cost-effectively replaced.
  • a hooking device for working tools for flat glass sheets or flat crystal glass sheets, mirror glass sheets, or also flat marble, granite and similar stone material slabs, comprised of a first component and of a second component that can be coupled to one another and separated from one another, and formed, respectively, by a plate to be fastened to a spindle, which controls the turning operation of a grinding tool, and by a backing pad coupled to the plate and comprised of a grinding wheel on the opposite side to the coupling to the plate, first and second coupling devices for quick coupling, formed respectively on the above-said plate and backing pad and cooperating with one another to form a tight and anti-rotational coupling.
  • Figure 1 is an axonometric view of a first component of the hooking device for working tools for flat sheets according to this invention
  • Figure 2 is a partially sectioned axonometric view of the above-said first component
  • Figure 3 is an axonometric view of a second component of the invention device
  • Figure 4 is an additional axonometric view of the second component referred to in figure 3;
  • Figures 5 and 6 are an axonometric and a partially exploded section view of two steps in a coupling sequence of the above-said first and second components of the invention device .
  • the hooking device for working tools for flat sheets according to this invention globally identified by number 10 in the figures, is comprised of a first component and of a second component that can be coupled to one another and separated from one another (as better described below) , and formed, respectively, by a plate 12 to be fastened to the motor, which controls the turning operation of the grinding tool, and by a backing pad 14 coupled to the plate 12 and comprised of a typically ring-shaped grinding wheel 13 (marked by a dotted line in figures 3 and 4) on the opposite side to the coupling to the plate 12.
  • the plate 12 which is the first element of the invention device, is comprised of an essentially disc-shaped body 15 that has a through-hole 16 in the middle, providing a slot in which a rotating shaft of a spindle engages, to which such plate is securely fastened (by means of a bolt and a lock nut, or other known retaining systems), a first flat front 15' to come into contact with the spindle, and a ring-shaped attachment 18, which, from a second flat front 15'' opposite to the first front 15' of the disc-shaped body 15, develops circumferentially on the outer edge of that second front 15'' and perpendicularly to the plane of the body 15, thus forming, together with the second flat front 15'', a middle pocket 20, the function of which will be clarified later on.
  • the ring-shaped attachment 18 is comprised of two or more teeth 22 radially developing from an inner edge of the circumference of that ring-shaped attachment 18 towards the hole 16 in the disc-shaped body 15.
  • a pair of essentially adjacent radial holes 24 passing through the ring-shaped attachment 18 is formed; such holes 24, as better detailed below, will accommodate a pin 26 that serves as an anti-rotation device.
  • the plate 12 is made of metal, preferably aluminium or other material suitable for the purpose.
  • the backing pad 14 is the element to which the diamond grinding wheel 13, with which the edge of the sheet to be processed will come into contact, is associated; as far as its embodiment in figures 3 and 4 is concerned, it is formed by a disc-shaped element that is comprised of a first disc-shaped part 30 comprising a first front 30', on which a pocket 32 is formed, from the outer edge of such first disc-shaped part towards the centre.
  • the pocket 32 circular-crown shape is aimed at forming a slot to engage a ring-shaped grinding wheel 13 (typically, a metal and resin-bonded diamond wheel) , and an additional pocket 33, also formed on that first front 30' of the first circular part 30, centrally thereto and coaxially with the pocket 32; such additional pocket 33 will feature a number of bent fins 34 perpendicularly to the plane of the above-mentioned front .
  • a ring-shaped grinding wheel 13 typically, a metal and resin-bonded diamond wheel
  • a tubular attachment 36 develops from a second front 30'' of the disc-shaped part 30, opposite to the above-said first front 30'; a number of ribs 38 are formed on its outer side surface 36', which protrude outwards from such side surface, and which are circumferentially arranged along the tubular attachment 36 at an equal distance from one another; these ribs 38 are aimed at preventing water and/or other processing liquids from entering the plate 12 attached to the spindle, and namely such ribs optimise the distribution of water or other processing liquid, by spraying it on the contact point of the grinding wheel 13 with the glass being processed.
  • Two or more essentially "T"-shaped attachments 40 develop from the second front 30'' of the disc-shaped part 30 outwards the tubular attachment 36 and the ribs 38, essentially perpendicularly to the above-said second front plane and departing therefrom;
  • such "T"-shaped attachments 40 feature a main body 40' developing as a bent surface, whose bending corresponds to that of the tubular attachment 36, and two opposite arms 40'' that develop with the same bending, departing from one another and starting from the opposite side edges of the main body 40' at one end of the above-said main body opposite to the second front of the disc-shaped body 30;
  • such opposite arms 40'' form coupling elements with the teeth 22 of the plate 12, in the modes detailed below.
  • the shaped attachments 40 develop as a conical surface, the axis of which corresponds to the vertical axis of the backing pad 14 (which corresponds to the spindle rotation axis) .
  • the above-said backing pad 14 is preferably made of a special resin (e.g. of Polyamide 6.6 type) reinforced with glass powder.
  • Figure 5 represents the plate 12 and the backing pad 14 before coupling - namely, the plate 12 is attached to the spindle of the grinding machine (as described above) and the backing pad 14 supports the grinding wheel 13 (not represented in the figures) .
  • Figure 6 illustrates the coupling of the backing pad 14 and the plate 12: the backing pad 14 is first fitted onto/coupled to the tubular attachment 36 in the pocket 20 of the plate 12 coaxially, and the two or more shaped attachments 40 are arranged in the space between two teeth 22 of that plate 12, and then, following a manual rotation (indicated by the "x" arrow in figure 6, either leftwards or rightwards) on a "y" axis (which corresponds to the motor rotation axis), the arms 40' of the shaped attachment 40 of the backing pad 14 engage in the recess 21 between such teeth 22 and the upper front 15' of the plate 12, and the rotation of such backing pad 14 (either leftwards or rightwards) in relation to the plate 12 continues until the shaped attachment 40 of that backing pad is no longer positioned so that its main body 40' (and, more specifically, the side edge of that main body) is in line with the tooth 22 of the plate 12, and in that position, the pin 26 in the holes 24 of the plate 12 securely locks the backing pad 14 in
  • the hooking device for working tools for flat sheets conveniently allows simplifying tool replacement operations in the event of wear/tear/breakage, or the like, affecting the abrasive part of the grinding wheel. Indeed, a single operator would be able to easily align and rotate the device to couple the two elements of the plate and the backing pad (which supports the grinding wheel) to the plate that is always fixed in relation to the spindle.
  • the invention device does not require keeping in stock a variety of types of different grinding tools depending on the different types of machines for which they are intended, given that the plate to which the grinding wheel (fastened to the backing pad) is coupled always remains attached to the spindle, and therefore the only part to replace is the backing pad.
  • Another advantage is that the development as a conical surface of the shaped attachments of the backing pad, which form the coupling elements with the plate, and the presence of ribs on the backing pad itself allow ensuring the grip between the backing pad and the plate and optimising the distribution of water or other processing liquid, by spraying it on the contact point of the grinding wheel with the glass being processed. This is unlike what happens with regular 'screw' attachments, which do not prevent grinding swarf from entering the screw itself and, furthermore, cannot ensure the best grip, especially in the event of very fine processing with decimal increments.
  • Another advantage of the invention device is the fact that the operator coupling the backing pad that supports the wheel to the plate can overlook the rotation direction of the spindle to which the plate is attached; as a matter of fact, the pin 26 locks the backing pad rotation in relation to the plate, regardless of the fact that the backing pad was assembled leftwards or rightwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Drilling And Boring (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne un dispositif d'accrochage (10) pour des outils de travail pour des feuilles de verre plates ou des feuilles de cristal plates, des feuilles de verre à miroir, ou aussi des plaques de marbre, de granit et de matériau minéraux similaires, comprenant un premier composant et un deuxième composant qui peuvent être accouplés l'un à l'autre et séparés l'un de l'autre, et formés respectivement par une plaque (12) destinée à être fixée à une broche, qui commande l'opération de rotation d'un outil de meulage, et par une plaque de pressage (14) accouplée à la plaque (12) et constituée d'une meule (13) sur le côté opposé à l'accouplement à la plaque (12). Un tel dispositif est en outre constitué de premier et deuxième dispositifs d'accouplement pour un accouplement rapide, formés respectivement sur ladite plaque (12) et la plaque de pressage (14) et coopérant l'un avec l'autre pour former un accouplement serré et anti-rotation.
PCT/IB2019/058727 2018-10-22 2019-10-14 Dispositif d'accrochage pour outils de travail Ceased WO2020084379A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000009651A IT201800009651A1 (it) 2018-10-22 2018-10-22 Dispositivo di aggancio per utensili di lavorazione
IT102018000009651 2018-10-22

Publications (1)

Publication Number Publication Date
WO2020084379A1 true WO2020084379A1 (fr) 2020-04-30

Family

ID=65244472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/058727 Ceased WO2020084379A1 (fr) 2018-10-22 2019-10-14 Dispositif d'accrochage pour outils de travail

Country Status (2)

Country Link
IT (1) IT201800009651A1 (fr)
WO (1) WO2020084379A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230158639A1 (en) * 2021-11-25 2023-05-25 Disco Corporation Grinding apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117140304B (zh) * 2023-10-30 2024-01-09 新乡市至德精密设备有限公司 一种便于更换磨盘的双面研磨机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907376A (en) * 1988-05-10 1990-03-13 Norton Company Plate mounted grinding wheel
WO2001096067A1 (fr) * 2000-06-14 2001-12-20 Kaiser Richard A Accessoire a montage rapide pour outil de finition rotatif
EP2524766A2 (fr) * 2011-05-18 2012-11-21 Herramientas de Diamante, S.A. Meule en deux pièces pour usinage
EP2915630A1 (fr) * 2014-03-03 2015-09-09 Adi S.p.A. Bride de maintien de roues pour meules boisseaux, avec système de déverrouillage rapide de la roue

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907376A (en) * 1988-05-10 1990-03-13 Norton Company Plate mounted grinding wheel
WO2001096067A1 (fr) * 2000-06-14 2001-12-20 Kaiser Richard A Accessoire a montage rapide pour outil de finition rotatif
EP2524766A2 (fr) * 2011-05-18 2012-11-21 Herramientas de Diamante, S.A. Meule en deux pièces pour usinage
EP2915630A1 (fr) * 2014-03-03 2015-09-09 Adi S.p.A. Bride de maintien de roues pour meules boisseaux, avec système de déverrouillage rapide de la roue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230158639A1 (en) * 2021-11-25 2023-05-25 Disco Corporation Grinding apparatus
US12440944B2 (en) * 2021-11-25 2025-10-14 Disco Corporation Grinding apparatus

Also Published As

Publication number Publication date
IT201800009651A1 (it) 2020-04-22

Similar Documents

Publication Publication Date Title
US6769964B2 (en) Abrasive tool having a unitary arbor
WO2020084379A1 (fr) Dispositif d'accrochage pour outils de travail
KR101750035B1 (ko) 면취기
KR101128235B1 (ko) 회전수단을 가지는 연마가공물 고정용 지그
EP1693135B1 (fr) Dispositif de serrage de lame de scie
US3456401A (en) Brake disc grinder
KR20190086137A (ko) 핸드 그라인더의 그라인더 날 고정장치
KR20150126249A (ko) 핸드 그라인더
CN110842777A (zh) 一种便于更换磨轮的陶瓷磨边装置
US2118409A (en) Abrasive assembly
US20140206266A1 (en) Never lost Grinder Nut
JP2017185586A (ja) 研削ホイール、および研削砥石
KR101615727B1 (ko) 연마장치
US2282096A (en) Grinder
KR101122354B1 (ko) 분할 평면 연마석과 연마장치
CN105215820A (zh) 一种研磨机
US20220080555A1 (en) Bilateral abrasive disc pad
SE541203C2 (sv) Hålsåg
KR102505476B1 (ko) 핸드 그라인더의 가공디스크 착탈장치
KR20220129254A (ko) 그라인더용 커플러 조립체
CN218927407U (zh) 一种金属件磨削用磨削轮
KR20130034127A (ko) 웨이퍼 노치 휠 및 그라인딩 장치
CN217943052U (zh) 一种便于快速更换的金刚石磨具
CN214237765U (zh) 一种蜗杆磨砂轮
KR200479979Y1 (ko) 그라인더용 연마휠

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19794661

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19794661

Country of ref document: EP

Kind code of ref document: A1