EP3539720B1 - Outil de rectification permettant de rectifier un bloc-moteur - Google Patents

Outil de rectification permettant de rectifier un bloc-moteur Download PDF

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Publication number
EP3539720B1
EP3539720B1 EP19156235.4A EP19156235A EP3539720B1 EP 3539720 B1 EP3539720 B1 EP 3539720B1 EP 19156235 A EP19156235 A EP 19156235A EP 3539720 B1 EP3539720 B1 EP 3539720B1
Authority
EP
European Patent Office
Prior art keywords
main body
passages
grinding
grinding tool
cover plate
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
EP19156235.4A
Other languages
German (de)
English (en)
Other versions
EP3539720A1 (fr
Inventor
Mario Nairz
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 PL19156235T priority Critical patent/PL3539720T3/pl
Publication of EP3539720A1 publication Critical patent/EP3539720A1/fr
Application granted granted Critical
Publication of EP3539720B1 publication Critical patent/EP3539720B1/fr
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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • 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
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • 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
    • 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
    • B24D7/10—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 cooling provisions

Definitions

  • the invention relates to a grinding tool for grinding an engine block, comprising a base body, which comprises a central coupling area for connecting the base body to a rotary drive of a grinding machine, the base body being essentially rotationally symmetrical with respect to an axis of rotation, a grinding surface which is arranged on the base body and extends at least over an outer annular zone of the base body, at least one supply for a cooling fluid, and a substantially circular cover plate, which is arranged substantially normal to the axis of rotation and with the formation of an axial gap on the base body, the axial gap being in fluid communication with the at least one is a feed and the abrasive coating, so that a cooling fluid supplied via the at least one feed can be directed via the axial gap to the abrasive coating.
  • the invention further relates to an arrangement of such a grinding tool and an HSK receptacle connected thereto at least via the central coupling area of the base body.
  • grinding tools for grinding engine blocks are known per se from the prior art.
  • the grinding process used is also known as “micro milling” or “smear grinding”.
  • the material subjected to the grinding process is removed and “lubricated” via the microporosity of the surface to be ground.
  • the grinding tools are often cooled by means of a cooling fluid, a cooling fluid supplied via a feed being led to the grinding lining via an axial gap.
  • the cover plate is positioned at a distance from the base body, which results in a cylindrical gap between the cover plate and the base body, over which the cooling fluid is distributed.
  • the EP 1 859 904 A1 proposes to arrange a flange on a grinding tool which forms a gap with a base body of the grinding tool. This gap is in fluid communication with a supply for cooling fluid and serves to direct the cooling fluid more effectively to a grinding surface of the grinding tool.
  • the DE10 2008 025 120 B3 proposes a split grinding wheel, which consists of two part wheels that can be rotated and fixed against each other.
  • the dividing disks have spacing ramps on the basis of which the spacing of the dividing disks changes when they are rotated relative to one another. Due to the rotation of the dividing disks relative to one another, gaps arise between the dividing disks, which can be used to conduct cooling fluid.
  • the object of the present invention is therefore to improve the service life of the grinding tool and the surface quality of the surface of the engine blocks to be processed with the grinding tool compared to the prior art, and an arrangement of an improved grinding tool compared to the prior art and at least above the central one Specify the coupling area of the base body associated HSK recording.
  • the base body and the cover plate have an inclined surface which adjoins the abrasive coating, the inclined surfaces contacting each other in regions, and that second channels are arranged on the inclined surface for the targeted conduction of the cooling fluid, and that the second Channels are arranged offset to the first channels, and / or more second channels are provided as first channels.
  • the cooling fluid can thus be directed in a targeted manner via first and second channels from the at least one feed to the abrasive coating, as a result of which a more uniform and controlled distribution of the cooling fluid is possible.
  • sanded material can be removed more efficiently. Overall, this leads to an approximately 30% longer service life compared to the prior art.
  • protection is also sought for an arrangement comprising a grinding tool according to the invention and an HSK receptacle connected to it at least via the central coupling area of the base body.
  • the Figures 1 , 2nd and 3a show an arrangement 25 of a grinding tool 1 for grinding an engine block and an HSK receptacle 23.
  • the grinding tool 1 comprises a base body 2, which has a central coupling area 3 for connecting the base body 2 to a rotary drive 4 of a grinding machine 5 (in FIG Figure 3a indicated by dashed lines), wherein the base body 2 is essentially rotationally symmetrical with respect to an axis of rotation 6.
  • the central coupling area 3 is designed such that the grinding tool 1 can be connected to an HSK receptacle 23.
  • the grinding tool 1 further comprises an abrasive coating 7, which extends at least over an outer annular zone 8 of the base body 2, at least one feed 9 for a cooling fluid 10, and an essentially circular cover plate 11, which is essentially normal to the axis of rotation 6 and with the formation of a Axial gap 12 is arranged on the base body 2, the axial gap 12 being in fluid communication with the at least one feed line 9 and the abrasive coating 7, so that a cooling fluid 10 supplied via the at least one feed line 9 is conducted via the axial gap 12 to the abrasive coating 7 can (compare Figure 3a ).
  • the circular ring zone 8 of the base body 2 is oriented essentially normal to the axis of rotation 6.
  • first channels 15 are arranged for the targeted conduction of the cooling fluid 10 from the at least one feed 9 to the abrasive coating 7.
  • first channels 15 on a surface 14 of the cover plate 11 facing the base body 2 for the targeted routing of the cooling fluid 10 from the at least one feed 9 to the abrasive coating 7.
  • first channels 15 for the targeted conduction of the cooling fluid 10 from the at least one on both the surface 13 of the base body 2 facing the cover plate 11 and the surface 14 facing the base body 2 Feed 9 to the abrasive coating 7 are arranged.
  • the feed 9 for the cooling fluid 10 runs essentially parallel to the axis of rotation 6 or in the axial direction 29, and is designed as a bore in the base body 2. This feed 9 can continue in the HSK receptacle 23 in the form of an opening 33.
  • the cover plate 11, the base body 2 and the HSK receptacle 23 are detachably connected to one another via connecting means 24 in the form of screws.
  • the screws penetrate recesses 30 in the cover plate 11 and recesses 31 in the base body 2 and are mounted in bores 32 in the HSK receptacle 23.
  • the screws 24 can have an external thread and the bores 32 can have a corresponding internal thread.
  • cover plate 11 is connected to the base body 2, and on the other hand the package of cover plate 11 and base body 2 is connected to the HSK receptacle 23.
  • the surface 13 of the base body 2 facing the cover plate 11 and the surface 14 of the cover plate 11 facing the base body 2 make contact in regions, specifically at the points at which no first channels 15 are provided.
  • the base body 2 and the cover plate 11 each have an inclined surface 17, 18 which adjoins the abrasive coating 7, the inclined surfaces 17, 18 making contact in some areas.
  • Second channels 19 are arranged on the inclined surface 17 for the targeted conduction of the cooling fluid 10.
  • second channels 19 can be arranged for the targeted conduction of the cooling fluid 10.
  • third channels 20 are arranged for the targeted conduction of the cooling fluid 10, the third channels 20 being connected to the second channels 19.
  • An annular channel 26 is arranged between the base body 2 and the cover plate 11 for the targeted conduction of the cooling fluid 10.
  • a cooling fluid 10 supplied in the axial direction 29 is conducted radially via the first channels 15 in the direction of the outer edge 21 of the base body 2, reaches the annular channel 26, from there into the second channels 19 and finally into the third channels 20, which are arranged in the abrasive coating 7.
  • the outer annular zone 8 of the base body 2 is shown in detail.
  • the abrasive coating 7 arranged in this circular ring zone 8 on the base body 2 comprises diamonds, is galvanically connected to the base body 2, and has a thickness 22 of 0.1 mm to 1 mm, preferably approximately 0.3 mm.
  • the abrasive coating is not only oriented substantially normal to the axis of rotation 6, but also encloses part of the outer edge 21 of the base body 2.
  • the Figures 4a and 4b details of the cooling fluid distribution system can be found: Starting from the feed 9, the first channels 15 run outward in a substantially radial direction 16. The channels 15 are each at the same angular distance from one another.
  • the first channels 15 open into the annular channel 26, and the annular channel 26 is formed by a cavity between a partial surface 27 arranged on the base body 2 and a partial surface 28 arranged on the cover plate 11 (see also Figure 5 ).
  • the cooling fluid 10 reaches the second channels 19. These are offset from the first channels 15. More second channels 19 than first channels 15 are provided. The second channels 19 likewise run outward in the radial direction 16.
  • the cooling fluid 10 passes from the second channels 19 into the third channels 20, which are connected to the second channels 19.
  • the same number of third channels 20 as second channels 19 are provided.
  • the third channels 20 run obliquely with respect to the radial direction 16 and widen towards the outer edge 21 of the base body 2.
  • the Figure 5 shows the cover plate 11 of the grinding tool 1 from behind.
  • the surface 14 facing the base body 2, the partial surface 28, which, together with the partial surface 27 of the base body 2, delimits the annular channel 26 in the axial direction 29, and the inclined surface 18 can be seen.
  • no channels for the targeted conduction of the cooling fluid 10 are arranged on the surface 14 and the inclined surface 18.
  • 15 and 19 channels can be provided here in addition to or instead of the channels 15 and 19 provided on the base body.

Landscapes

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

Claims (12)

  1. Outil de meulage (1) pour la rectification d'un bloc moteur, comprenant
    - un corps de base (2), lequel comprend une zone de couplage centrale (3) pour relier le corps de base (2) à un dispositif d'entraînement en rotation (4) d'une machine de meulage (5), dans lequel le corps de base (2) est conçu essentiellement à symétrie de rotation par rapport à un axe de rotation (6),
    - une garniture de meulage (7), laquelle est disposée sur le corps de base (2) et s'étend au moins sur une zone en anneau circulaire externe (8) du corps de base (2),
    - au moins une alimentation (9) pour un fluide de refroidissement (10), et
    - une plaque de recouvrement essentiellement circulaire (11), laquelle est disposée essentiellement perpendiculairement à l'axe de rotation (6) et en formant une fente axiale (12) sur le corps de base (2), la fente axiale (12) se trouvant en liaison fluide avec la au moins une alimentation (9) et la garniture de meulage (7) de sorte qu'un liquide de refroidissement (10) amené au moyen de la au moins une alimentation (9) peut être guidé par la fente axiale (12) vers la garniture de meulage (7),
    dans lequel sur une surface (13), orientée vers la plaque de recouvrement (11), du corps de base (2) et/ ou sur une surface (14), orientée vers le corps de base (2), de la plaque de recouvrement (11) sont disposés des premiers canaux (15) pour le guidage ciblé du fluide de refroidissement (10) de la au moins une alimentation (9) vers la garniture de meulage (7), caractérisé en ce que le corps de base (2) et la plaque de recouvrement (11) présentent une surface oblique (17, 18), laquelle est adjacente à la garniture de meulage (7), les surfaces obliques (17, 18) étant en contact par endroits, et en ce que sur la surface oblique (17) sont disposés des deuxièmes canaux (19) pour le guidage ciblé du fluide de refroidissement (10), et en ce que les deuxièmes canaux (19) sont disposés d'une manière décalée par rapport aux premiers canaux (15), et / ou davantage de deuxièmes canaux (19) que de premiers canaux (15) sont prévus.
  2. Outil de meulage (1) selon la revendication 1, dans lequel la surface (13), orientée vers la plaque de recouvrement (11), du corps de base (2) et la surface (14), orientée vers le corps de base (2), de la plaque de recouvrement (11) sont en contact par endroits.
  3. Outil de meulage (1) selon la revendication 1 ou 2, dans lequel les premiers canaux (15) passent essentiellement dans le sens radial (16).
  4. Outil de meulage (1) selon l'une des revendications 1 à 3, dans lequel sont disposés des troisièmes canaux (20) dans la zone en anneau circulaire (8) du corps de base (2) pour le guidage ciblé du fluide de refroidissement (10).
  5. Outil de meulage (1) selon la revendication 4, dans lequel les troisièmes canaux (20) passent obliquement par rapport au sens radial (16), et / ou s'élargissent vers le bord externe (21) du corps de base (2).
  6. Outil de meulage (1) selon la revendication 4 ou 5, dans lequel les troisièmes canaux (20) sont reliés aux deuxièmes canaux (19), et / ou exactement autant de troisièmes canaux (20) que de deuxièmes canaux (19) sont prévus.
  7. Outil de meulage (1) selon l'une des revendications 1 à 6, dans lequel est disposé entre le corps de base (2) et la plaque de recouvrement (11) au moins un canal annulaire (26) pour le guidage ciblé du fluide de refroidissement (10), de préférence dans lequel les premiers canaux (15) débouchent dans le canal annulaire (26), et / ou le canal annulaire (26) est conçu par une cavité entre une surface partielle (27) disposée sur le corps de base (2) et une surface partielle (28) disposée sur la plaque de recouvrement (11).
  8. Outil de meulage (1) selon l'une des revendications 1 à 7, dans lequel la au moins une alimentation (9) pour le fluide de refroidissement (10) passe essentiellement parallèlement à l'axe de rotation (6), et / ou est conçue comme alésage dans le corps de base (2).
  9. Outil de meulage (1) selon l'une des revendications 1 à 8, dans lequel la zone en anneau circulaire (8) du corps de base (2) est orientée essentiellement perpendiculairement à l'axe de rotation (6).
  10. Outil de meulage (1) selon l'une des revendications 1 à 9, dans lequel la garniture de meulage (7) comprend des diamants, est disposée directement sur le corps de base (2), est reliée de façon galvanique au corps de base (2), et / ou présente une épaisseur (22) de 0,1 mm à 1 mm, de préférence de 0,3 mm environ.
  11. Outil de meulage (1) selon l'une des revendications 1 à 10, dans lequel
    - la zone de couplage centrale (3) est conçue de manière telle que l'outil de meulage (1) peut être relié à un raccord HSK (23), et / ou
    - la plaque de recouvrement (11), le corps de base (2) et un raccord HSK (23) prévu le cas échéant, peuvent être reliés ensemble de façon détachable par des moyens de liaison (24), de préférence des vis.
  12. Dispositif (25) composé d'un outil de meulage (1) selon l'une des revendications 1 à 11 et d'un raccord HSK (23) relié avec, au moins sur la zone de couplage centrale (3) du corps de base (2).
EP19156235.4A 2018-03-12 2019-02-08 Outil de rectification permettant de rectifier un bloc-moteur Active EP3539720B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19156235T PL3539720T3 (pl) 2018-03-12 2019-02-08 Narzędzie szlifierskie do szlifowania bloku silnika

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50211/2018A AT520966A1 (de) 2018-03-12 2018-03-12 Schleifwerkzeug zum Schleifen eines Motorblocks

Publications (2)

Publication Number Publication Date
EP3539720A1 EP3539720A1 (fr) 2019-09-18
EP3539720B1 true EP3539720B1 (fr) 2020-03-25

Family

ID=65365876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19156235.4A Active EP3539720B1 (fr) 2018-03-12 2019-02-08 Outil de rectification permettant de rectifier un bloc-moteur

Country Status (7)

Country Link
US (1) US11969852B2 (fr)
EP (1) EP3539720B1 (fr)
CN (1) CN110253429B (fr)
AT (2) AT17877U1 (fr)
ES (1) ES2800431T3 (fr)
HU (1) HUE049607T2 (fr)
PL (1) PL3539720T3 (fr)

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CH460572A (fr) 1966-07-26 1968-07-31 Juillerat Henri Procédé de lubrification d'une meule et meule pour la mise en oeuvre du procédé
US3754359A (en) * 1970-09-16 1973-08-28 Spam D Avray Abrasion tools
NL8006599A (nl) * 1980-02-01 1981-09-01 Disco Co Ltd Slijpwiel voor vlakke platen alsmede werkwijze voor het vervaardigen daarvan.
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Also Published As

Publication number Publication date
ES2800431T3 (es) 2020-12-30
CN110253429B (zh) 2021-10-15
HUE049607T2 (hu) 2020-09-28
US20190275631A1 (en) 2019-09-12
EP3539720A1 (fr) 2019-09-18
AT520966A1 (de) 2019-09-15
CN110253429A (zh) 2019-09-20
PL3539720T3 (pl) 2020-09-07
US11969852B2 (en) 2024-04-30
AT17877U1 (de) 2023-06-15

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