EP3575034B1 - Corps de support pour outils à rectifier - Google Patents

Corps de support pour outils à rectifier Download PDF

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Publication number
EP3575034B1
EP3575034B1 EP19186520.3A EP19186520A EP3575034B1 EP 3575034 B1 EP3575034 B1 EP 3575034B1 EP 19186520 A EP19186520 A EP 19186520A EP 3575034 B1 EP3575034 B1 EP 3575034B1
Authority
EP
European Patent Office
Prior art keywords
carrier body
ring
webs
set forth
web
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.)
Active
Application number
EP19186520.3A
Other languages
German (de)
English (en)
Other versions
EP3575034A3 (fr
EP3575034A2 (fr
Inventor
Andreas Fritsche
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
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 Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Priority to PL19186520T priority Critical patent/PL3575034T3/pl
Publication of EP3575034A2 publication Critical patent/EP3575034A2/fr
Publication of EP3575034A3 publication Critical patent/EP3575034A3/fr
Application granted granted Critical
Publication of EP3575034B1 publication Critical patent/EP3575034B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots

Definitions

  • the invention relates to a carrier body for grinding tools with an inner hub ring, which encloses a central bore for connecting the grinding tool to a rotary drive, and an outer casing ring for receiving a grinding agent, in particular in the form of a galvanic coating, a slip ring or several grinding segments, the hub ring and the jacket ring are connected to one another via a plurality of spaced apart webs, and wherein the webs each have at least one recess.
  • the invention further relates to a grinding tool with such a carrier body.
  • the EP 2 641 696 A1 discloses a carrier body in which the objective is to save as much weight as possible and at the same time to make the carrier body as stable as possible.
  • the first goal was achieved in solving the EP 2 641 696 A1 successfully implemented.
  • the carrier body of the EP 2 641 696 A1 expand to an undesirable extent, especially when the number of revolutions increases.
  • the rigidity under the influence of lateral forces there is the EP 2 641 696 A1 Need for improvement.
  • the object of the present invention is therefore to provide a carrier body which is improved compared to the prior art, which on the one hand is greatly reduced in weight and on the other hand has sufficient strength against centrifugal forces and sufficient rigidity against lateral forces. Furthermore, a grinding tool with such an improved support body is to be specified.
  • each of the webs By providing at least one recess in each of the webs, it is possible to cover a larger spatial area with the webs without increasing the weight of the carrier body. By covering a larger space, the strength against centrifugal forces and the rigidity against lateral forces can be significantly improved and influenced.
  • the dynamic behavior of the carrier body or of a grinding tool comprising the carrier body can be specifically influenced by the arrangement and the variation of the geometry of the webs and the at least one recess provided therein.
  • protection is also desired for a grinding tool with a support body according to the invention and a grinding means connected to the jacket ring, in particular in the form of a galvanic coating, a slip ring or several grinding segments.
  • FIGS. 1a-1d show a first preferred embodiment of the support body 1 according to the invention, wherein Figure 1a a perspective view, Figure 1b a plan view of a first side surface 28, Figure 1c a plan view of the lateral surface 47 and Figure 1d a plan view of the second side surface 28 of the carrier body 1 contains.
  • the carrier body 1 has an inner hub ring 7 which encloses a central bore 8 for connecting the carrier body 1 or a grinding tool constructed by means of the carrier body 1 to a rotary drive.
  • the central bore 8 has a radius 44 of 50 mm to 150 mm, preferably 63.5 mm or 101.6 mm, the radius 44 being measured from the center point of the central bore 8, through which the axis of rotation 24 of the support body 1 extends to the inner edge of the hub ring 7.
  • the carrier body 1 also has an outer jacket ring 9 for receiving an abrasive, in particular in the form of a galvanic coating, a slip ring or a plurality of grinding segments.
  • the hub ring 7 and the jacket ring 9 have a distance 43 of 50 mm to 150 mm, preferably 100 mm, from one another. This distance 43 is measured from the outer edge of the hub ring 7 to the inner edge of the casing ring 9.
  • the hub ring 7 and the jacket ring 9 are connected to one another via several webs 10, more precisely via a total of eleven webs 10 which are arranged at a uniform angular distance 41 relative to one another.
  • the webs 10 are spaced from one another.
  • Recesses 48 are arranged between the webs 10, which in the present case are approximately trapezoidal, with the corners of the trapezoid being rounded.
  • the provision of a number of webs, the number corresponding to a prime number and / or an odd number, is particularly advantageous because the carrier body thereby builds up particularly few vibrations.
  • the webs 10 each have an approximately triangular recess 13. Furthermore, the webs 10 have two partial webs 18 and 19 spaced apart from one another by the recess 13. These partial webs 18 and 19 have a common contact point 31 which is arranged adjacent to the hub ring 7. Starting from this contact point 31, the partial webs 18 and 19 diverge in the direction of the casing ring 9 in opposite directions, that is, the distance between the partial webs 18 and 19 from one another increases in the radial direction. In other words, the webs 10 widen towards the casing ring 9 in the plane of the carrier body 1.
  • the partial webs 18 and 19 are furthermore arcuate and mirror-symmetrical to a plane 25 aligned parallel to the axis of rotation 24 of the carrier body 1.
  • a partial web 18 of a web 10 and a partial web 19 of an adjacent web 10 each form a cut-off pointed arch 26 (in Figure 1b shown in dashed lines), the tip 27 of the imaginary fully executed ogive arch 26 lying outside of the jacket ring 9.
  • parabolic arches can also be used.
  • the carrier body 1 has a radius 42 of 200 mm to 300 mm, preferably 250 mm.
  • the jacket ring 9 comprises two outer webs 46, between which the jacket surface 47 is arranged. These two webs 46 can be electroplated with an abrasive. This results in two active grinding areas with which two workpieces or two areas of a workpiece can be machined at the same time.
  • FIG. 2a A second preferred embodiment of the support body 2 according to the invention is shown in Figures 2a to 2c shown, whereby in the Figure 2a a perspective view in which Figure 2b a plan view of one of the side surfaces 28 of the support body 2 and in FIG Figure 2c a plan view of the lateral surface 47 of the carrier body 2 is included.
  • the carrier body 2 has an inner hub ring 7 which encloses a central bore 8 for connecting the carrier body 2 or a grinding tool formed therewith to a rotary drive, and an outer jacket ring 9 for receiving an abrasive, in particular in the form of a galvanic coating , a slip ring or several grinding segments.
  • a fastening ring 45 projecting in the axial direction is arranged on the inner hub ring 7, wherein this fastening ring 45 is formed on one side 28 of the carrier body 2.
  • the hub ring 7 and the jacket ring 9 are connected to one another via several, more precisely twelve webs 11, the webs 11 being spaced from one another by recesses 49.
  • the recesses 49 have approximately the shape of rectangles.
  • the webs 11 each have two recesses 14 and 15 which are arranged offset from one another in the radial direction.
  • the recesses 14 have the shape of an elongated hole.
  • the recesses 15 have an essentially circular cross section.
  • the recesses 15 simultaneously serve as fastening means, via which the side surfaces 28 of the carrier body 2 can be provided with covers.
  • the covers can extend from the fastening ring 45 to the inner edge of the casing ring 9.
  • the webs 11 also have two partial webs 20 and 21 spaced apart from one another by the recesses 14 and 15.
  • the partial webs 20 and 21 are connected to one another via two contact points 31.
  • the webs 11 widen towards the casing ring 9 and towards the hub ring 7 in the plane of the carrier body 2.
  • the partial webs 20 and 21 are arcuate and mirror-symmetrical to a plane 25 oriented parallel to the axis of rotation 24 of the carrier body 2.
  • a partial web 20 of a web 11 with a partial web 21 of an adjacent web 11 each form a cut-off pointed arch 26 (compare Figure 2b ), whereby the tip 27 of the ogival arch 26, which is completely executed in thought, lies outside the jacket ring 9.
  • pointed arches parabolic arches can also be used.
  • the carrier body 2 has several grooves on the lateral surface 47.
  • a limiting projection 46 is provided on only one side of the lateral surface 47.
  • Figure 3 shows a third preferred embodiment of a carrier body 3 according to the invention in a plan view of a side surface of the carrier body 3 that is oriented essentially normal to the axis of rotation.
  • the carrier body 2 comprises an inner hub ring 7, which encloses a central bore 8 for connecting the carrier body 2 or a grinding tool formed therewith to a rotary drive, and an outer casing ring 9 for receiving an abrasive, in particular in shape a galvanic coating, a slip ring or several grinding segments.
  • the hub ring 7 and the jacket ring 9 are connected to one another via several webs 12.
  • the webs 12 are spaced apart from one another by recesses 50.
  • the recesses 50 like the recesses 49 and 48 in the exemplary embodiments described above, represent openings which extend over the entire thickness of the carrier bodies 1, 2 and 3. In other words, one can look through the support bodies 1, 2 and 3 at least in the area of the recesses 48, 49 and 50.
  • the webs 12 each have two recesses 16 and 17 which are spaced apart from one another in the radial direction and are essentially triangular are formed, the triangles each having a tip facing one another.
  • the webs 12 furthermore have two partial webs 22 and 23 which are spaced apart from one another by the recesses 16 and 17, which in turn are arcuate and mirror-symmetrical to a plane 25 aligned parallel to the axis of rotation of the carrier body 3.
  • the partial webs 22 and 23 cross each other in this embodiment and form a contact point 31 at the intersection.
  • a partial web 22 of a web 12 with a partial web 23 of an adjacent web 12 each form a truncated pointed arch 26, the tips 27 of the imaginary fully executed pointed arches 26 lying outside the casing ring 9.
  • the arches 26 can also be designed in a parabolic shape.
  • a total of fifteen webs 12 are provided, which are arranged at uniform angular intervals 41 between the inner scarring 7 and the outer casing ring 9.
  • Fastening means 32 are provided on every fourth web 12, via which the outer side surfaces 28 of the carrier body 3 can be provided with covers. If necessary, the fastening means 32 can also be provided at smaller intervals, for example at every second web.
  • the illustrated carrier body 3, as well as the other carrier bodies 1, 2, 4, 5 and 6 shown in the figures, are essentially rotationally symmetrical and are made of a metal.
  • FIG. 4 is the fourth preferred embodiment according to FIG Figure 4 however, divided into two parts, the webs 12 being milled starting from a central plane 33 in the axial direction, but without completely breaking through the panes.
  • a material thickness that serves as a closure or cover 29 thus remains on the outer side surfaces.
  • the covers 29 are thus connected in one piece to the webs 12 and the hub ring 7 as well as the casing ring 9.
  • the covers 29 could also be connected to the webs 12 and / or the hub ring 7 and / or the jacket ring 9 via fastening means.
  • the fastening means 32 can be used for this purpose.
  • a membrane 40 is arranged in the center plane 33 of the carrier body 5, which divides the carrier body 5 into two halves 36 and 37 which can be distinguished from one another.
  • This membrane 40 prevents a material flow between the side surfaces of the carrier body 5.
  • the recesses 16, 17 and 50 in this case therefore do not extend over the entire thickness of the carrier body 5.
  • the sixth preferred embodiment provides that the halves 38 and 39 of the carrier body 6 are identical and are arranged rotated by a certain, in this case half, angular distance 41 of two adjacent webs 12.
  • Figures 7a to 7c is a seventh preferred embodiment of a carrier body 30 shown, wherein Figure 7a a perspective view, Figure 7b a plan view of a side surface 28 of the carrier body 30 which is oriented essentially normal to the axis of rotation 24, and Figure 7c shows a plan view of the lateral surface 47 of the carrier body 30.
  • the carrier body 30 in turn has an inner hub ring 7, which encloses a central bore 8 for connecting the carrier body 30 or a grinding tool comprising the carrier body 30 to a rotary drive, and an outer jacket ring 9 for receiving an abrasive, in particular in the form of a galvanic coating, a Slip ring or several grinding segments.
  • the hub ring 7 and the casing ring 9 are connected to one another via several webs 51, the webs 51 each having a recess 52.
  • the webs 51 are spaced apart from one another by means of through openings 57. A total of thirteen webs 51 are provided.
  • the webs 51 each have two partial webs 53 and 54 that are spaced apart from one another by the recess 52, the partial webs 53 and 54 being arcuate and mirror-symmetrical to a plane 25 oriented parallel to the axis of rotation 24 of the carrier body 30.
  • a partial web 53 of a web 51 forms an arc 55 with a partial web 54 of an adjacent web 51, the tips 56 of the arcs 55 touching the jacket ring 9.
  • the arcs 55 are parabolic. Alternatively, they could also be designed as pointed arches.
  • the angular distance 41 between two adjacent webs 51, the radius 42 of the support body 30, the radius 44 of the central bore 8 and the distance 43 of the hub ring 7 to the casing ring 9 can have the dimensions specified in connection with the other exemplary embodiments.

Landscapes

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

Claims (11)

  1. Corps de support (1, 2, 3, 4, 5, 6, 30) destiné à des outils abrasifs avec une frette de moyeu (7) intérieure, laquelle enserre un alésage central (8) pour accoler l'outil abrasif à un entraînement rotatif, et une frette d'enveloppe (9) extérieure pour recevoir un moyen abrasif, en particulier sous la forme d'un revêtement galvanique, une bague d'abrasion ou plusieurs segments d'abrasion, dans lequel la frette de moyeu (7) et la frette d'enveloppe (9) sont reliées ensemble par plusieurs traverses (10, 11, 12, 51) espacées les unes des autres, et dans lequel les traverses (10, 11, 12, 51) présentent respectivement au moins un évidement (13, 14, 15, 16, 17, 52), caractérisé en ce que les traverses (10, 11, 12, 51) présentent au moins deux traverses partielles (18, 19, 20, 21, 22, 23, 53, 54) espacées les unes des autres par le au moins un évidement (13, 14, 15, 16, 17, 52), dans lequel
    - une traverse partielle (18, 19, 20, 21, 22, 23) d'une traverse (10, 11, 12) et une traverse partielle (18, 19, 20, 21, 22, 23) d'une traverse (10, 11, 12) avoisinante forment respectivement un arc (26) sectionné, dans lequel les pointes (27) des arcs (26) virtuellement réalisés en entier se situent à l'extérieur de la frette d'enveloppe (9), ou
    - une traverse partielle (53, 54) d'une traverse (51) et une traverse partielle (53, 54) d'une traverse (51) avoisinante forment respectivement un arc (55), dans lequel les pointes (56) des arcs (55) effleurent la frette d'enveloppe (9).
  2. Corps de support (1, 2, 3, 4, 5, 6, 30) selon la revendication 1, dans lequel les traverses partielles (18, 19, 20, 21, 22, 23, 53, 54)
    - sont conçues en forme d'arc, et/ou
    - sont conçues en symétrie spéculaire par rapport à un plan (25) orienté parallèlement à l'axe de rotation (24) du corps de support (1, 2, 3, 4, 5, 6, 30), et/ou
    - se croisent, et/ou
    - forment au moins un point de contact (31).
  3. Corps de support (30) selon la revendication 1 ou 2, dans lequel les arcs (26, 55) sont réalisés avec une forme parabolique ou comme des arcs en pointe.
  4. Corps de support (1, 2, 3, 4, 5, 6, 30) selon l'une des revendications 1 à 3, dans lequel les traverses (10, 11, 12, 51) s'élargissent en allant vers la frette d'enveloppe (9) et/ou vers la frette de moyeu (7) dans le plan du corps de support (1, 2, 3, 4, 5, 6, 30).
  5. Corps de support (1, 2, 3, 4, 5, 6, 30) selon l'une des revendications 1 à 4, dans lequel au moins une des deux surfaces latérales (28) extérieures du corps de support (1, 2, 3, 4, 5, 6, 30), orientées essentiellement à la perpendiculaire de l'axe de rotation (24) du corps de support (1, 2, 3, 4, 5, 6, 30), présente un recouvrement (29).
  6. Corps de support (1, 2, 3, 4, 5, 6, 30) selon la revendication 5, dans lequel le recouvrement (29) est relié d'un seul tenant ou par des moyens de fixation (15, 32) aux traverses (10, 11, 12, 51) et/ou à la frette de moyeu (7) et/ou à la frette d'enveloppe (9).
  7. Corps de support (4, 5, 6) selon l'une des revendications 1 à 6, dans lequel le corps de support (4, 5, 6) présente un plan central (33) orienté essentiellement à la perpendiculaire de l'axe de rotation (24) du corps de support (4, 5, 6), lequel plan subdivise le corps de support (4, 5, 6) en deux moitiés (34, 35, 36, 37, 38, 39) différenciables l'une de l'autre.
  8. Corps de support (5, 6) selon la revendication 7, dans lequel une membrane (40) est agencée dans le plan central (33).
  9. Corps de support (4, 5, 6) selon la revendication 7 ou 8, dans lequel les moitiés (34, 35, 36, 37, 38, 39) du corps de support (4, 5, 6)
    - sont reliées ensemble au plan central (33), de préférence de façon amovible, et/ou
    - sont conçues en symétrie spéculaire par rapport au plan central (33), et/ou
    - sont conçues à l'identique et agencées en torsion l'une par rapport à l'autre selon une distance angulaire (41) déterminée, de préférence une demi-distance angulaire, de deux traverses (12) avoisinantes.
  10. Corps de support (1, 2, 3, 4, 5, 6, 30) selon l'une des revendications 1 à 9, dans lequel
    - le corps de support (1, 2, 3, 4, 5, 6, 30) présente un rayon (42) de 200 mm à 300 mm, de préférence 250 mm, et/ou
    - la frette de moyeu (7) et la frette d'enveloppe (9) présentent l'une par rapport à l'autre une distance (43) de 50 mm à 150 mm, de préférence 100 mm, et/ou
    - l'alésage central (8) présente un rayon (44) de 50 mm à 150 mm, de préférence 63,5 mm ou 101,6 mm, et/ou
    - le corps de support (1, 2, 3, 4, 5, 6, 30) est essentiellement conçu en symétrie rotationnelle, et/ou
    - la frette de moyeu (7) et la frette d'enveloppe (9) sont reliées l'une à l'autre par un certain nombre de traverses (10, 11, 12, 51), dans lequel le nombre correspond à un nombre premier et/ou un nombre impair, et/ou
    - le corps de support (1, 2, 3, 4, 5, 6, 30) est fabriqué dans un métal.
  11. Outil abrasif avec un corps de support (1, 2, 3, 4, 5, 6, 30) selon l'une des revendications précédentes et un moyen abrasif relié à la frette d'enveloppe (9), en particulier sous la forme d'un revêtement galvanique, d'une bague abrasive ou de plusieurs segments abrasifs.
EP19186520.3A 2016-08-11 2017-08-02 Corps de support pour outils à rectifier Active EP3575034B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19186520T PL3575034T3 (pl) 2016-08-11 2017-08-02 Korpus nośny do narzędzi ściernych

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ATA50731/2016A AT518908B1 (de) 2016-08-11 2016-08-11 Trägerkörper für Schleifwerkzeuge
EP17757669.1A EP3496898B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification
PCT/AT2017/060197 WO2018027250A1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP17757669.1A Division EP3496898B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification
EP17757669.1A Division-Into EP3496898B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification

Publications (3)

Publication Number Publication Date
EP3575034A2 EP3575034A2 (fr) 2019-12-04
EP3575034A3 EP3575034A3 (fr) 2020-04-01
EP3575034B1 true EP3575034B1 (fr) 2020-10-21

Family

ID=59702486

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17757669.1A Active EP3496898B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification
EP19186520.3A Active EP3575034B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils à rectifier

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17757669.1A Active EP3496898B1 (fr) 2016-08-11 2017-08-02 Corps de support pour outils de rectification

Country Status (8)

Country Link
US (1) US20190168360A1 (fr)
EP (2) EP3496898B1 (fr)
CN (1) CN109689296A (fr)
AT (1) AT518908B1 (fr)
ES (2) ES2843795T3 (fr)
MX (1) MX2019001650A (fr)
PL (2) PL3575034T3 (fr)
WO (1) WO2018027250A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022113308B4 (de) 2022-05-25 2024-06-27 Lightway GmbH Schleifscheibenaufnahme

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DE102017122331A1 (de) * 2017-09-26 2019-03-28 Stephan Rieth Schleif- und/oder Trennwerkzeug und Verfahren zum Schleifen und/oder Trennen

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Also Published As

Publication number Publication date
ES2843795T3 (es) 2021-07-20
PL3496898T3 (pl) 2020-05-18
EP3575034A3 (fr) 2020-04-01
US20190168360A1 (en) 2019-06-06
AT518908B1 (de) 2019-04-15
EP3496898A1 (fr) 2019-06-19
EP3575034A2 (fr) 2019-12-04
BR112019002465A2 (pt) 2019-05-14
ES2767724T3 (es) 2020-06-18
CN109689296A (zh) 2019-04-26
PL3575034T3 (pl) 2021-05-31
EP3496898B1 (fr) 2019-10-16
MX2019001650A (es) 2019-06-10
AT518908A1 (de) 2018-02-15
WO2018027250A1 (fr) 2018-02-15

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