EP1136183A2 - Segment de meulage diamanté et outil de meulage pour l'usinage de la surface de pièces - Google Patents

Segment de meulage diamanté et outil de meulage pour l'usinage de la surface de pièces Download PDF

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Publication number
EP1136183A2
EP1136183A2 EP01105769A EP01105769A EP1136183A2 EP 1136183 A2 EP1136183 A2 EP 1136183A2 EP 01105769 A EP01105769 A EP 01105769A EP 01105769 A EP01105769 A EP 01105769A EP 1136183 A2 EP1136183 A2 EP 1136183A2
Authority
EP
European Patent Office
Prior art keywords
grinding
segment
diamond
cavity
tool
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.)
Granted
Application number
EP01105769A
Other languages
German (de)
English (en)
Other versions
EP1136183B1 (fr
EP1136183A3 (fr
Inventor
Micheal Krebs
Klaus-Dieter Reinhardt
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.)
Krebs & Riedel Schleifscheibenfabrik & Co KG GmbH
Original Assignee
Krebs & Riedel Schleifscheibenfabrik & Co KG GmbH
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 Krebs & Riedel Schleifscheibenfabrik & Co KG GmbH filed Critical Krebs & Riedel Schleifscheibenfabrik & Co KG GmbH
Publication of EP1136183A2 publication Critical patent/EP1136183A2/fr
Publication of EP1136183A3 publication Critical patent/EP1136183A3/fr
Application granted granted Critical
Publication of EP1136183B1 publication Critical patent/EP1136183B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • B24D99/005—Segments of abrasive wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • 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

  • the present invention relates to a diamond grinding wheel for a Grinding tool for surface machining of workpieces, in particular of natural and artificial stones, preferably in the dry grinding process, with a grinding segment, which is on a carrier body is held and wherein a cavity is formed in the grinding segment and a corresponding diamond grinding tool in which such Grinding segments can be used.
  • the present invention is based on the object a diamond grinding tool or a diamond grinding tool create, in which the heat is removed well without that the grinding costs increase.
  • the first technical solution to this problem is proposed according to the invention the diamond grinding wheel mentioned above to further develop that in the grinding segment and / or in the carrier body at least one ventilation channel is provided which is connected to the cavity of the Grinding segment is operatively connected.
  • a diamond grinding tool and trained according to this technical teaching a diamond grinding tool designed according to this technical teaching have the advantage that through this ventilation channel and / or through this Vent hole the air in the cavity can escape to the outside can and thus a removal of the heat accumulated in the cavity enables. Especially in cooperation with that in the grinding surface trained recess. hereby an optimal ventilation of the internal cavity reached, so that the occurring during grinding Heat both from the outside of the grinding segment and from the Inside of the grinding segment are well released to the environment can, and that the heat is quickly and easily removed. The latter leads to a further increased removal and grinding performance.
  • the grinding segment is relatively thin-walled can be trained, so that the heat generated more quickly Surface of the grinding segment can be transported and there: better can be released to the environment. This will make a lot ensures faster heat transfer.
  • the grinding segment is together with a carrier body for attaching the grinding segment to the grinding tool sintered in one piece.
  • the grinding segment consists of two or more subsegments together, the subsegments are sintered in one piece with the carrier body.
  • a manufactured grinding segment has the advantage that the grinding segment in any geometric shape in a simple and inexpensive way Way can be made.
  • Another advantage is that the individual subsegments support each other so that the am Forces occurring in the grinding segment are reliably derived.
  • the one-piece sintering has the advantage that the grinding segment in easier and cheaper to manufacture.
  • Another advantage is that by sintering the individual sub-segments and / or the carrier body a material Connection arises, the forces occurring are good and non-destructive records.
  • the grinding segment is trapezoidal, triangular or oval. This has the advantage that distributed over the circumference of the sanding plate, a larger number of Abrasive discs can be arranged because of the gaps turn out smaller, which leads to a higher removal.
  • the alignment of the narrow side of the trapezoid or a tip of the Triangle towards the central axis has the advantage that even more grinding wheels can be arranged on the circumference of the grinding plate, resulting in leads to an even higher removal.
  • Another advantage is that the grinding segment with a lot less mass can be formed without the for the grinding process crucial front surface to shrink, which is approximately the same Grinding effect the saving of expensive, with diamond chips Abrasives.
  • neighboring ones Sub-segments have different abrasive concentrations.
  • a grinding wheel designed according to this technical teaching has the Advantage that the corresponding choice of the respective concentration Grinding segment can be optimized so that a uniform Wear of the abrasive takes place, so the abrasive body is very can be used much better. This leads to increased service life and at lower wear costs of the grinding tool.
  • the abrasive concentration is individual in individual cases determine. However, it has proven to be advantageous if in grinding and / or areas at the front in the direction of rotation a higher abrasive concentration have, as in the grinding and / or direction of rotation behind located areas, as this achieves more even wear becomes.
  • the grinding surface is opposite the surface of the workpiece to be ground by 0.5 ° to 60 °, preferably 2 ° to 35 °, inclined.
  • a grinding tool designed according to this technical teaching has the Advantage that the feed of the workpiece in the direction of advance Forces occurring on the grinding segment are no longer than transverse or bending forces occur, but depending on the degree of inclination with a certain axial portion can be introduced into the grinding segment. This will make the The risk of the grinding segment breaking off is reduced, making a stronger one Feed of the workpiece becomes possible, resulting in faster Machining the workpiece leads.
  • Vent hole provided with the cavity in the grinding segment is connected. This can, similar to that described above Vent hole, the one located in the cavity of the grinding segment, heated air can be removed, so that good heat dissipation is achieved.
  • FIG. 1a to 1c is a first embodiment of an inventive Grinding tool 110, here a diamond pot mill, shown, which has a grinding plate 114 rotating about a central axis 112 comprises, to which a plurality of abrasive bodies 116 are removably screwed are.
  • This explosively preferred in Fig. 1a Abrasive body 116 is composed of a carrier body 118, preferably made of metal, and an attached diamond grinding segment 120 together, wherein the grinding segment 120 consists of a known, Abrasive containing diamond chips is formed.
  • the grinding wheel 116 has a cavity in its grinding segment 120 122, which is coaxial to a longitudinal central axis 126 of the grinding wheel 116 is arranged.
  • the cavity 122 extends over the entire length of the grinding segment 120, that is to say from the carrier body 118 to one lower grinding surface 130 of the grinding segment 120 and occurs there Outside.
  • the grinding segment 120 is rectangular in cross section and has a recess 132 in the region of the cavity 122, so that the grinding surface resting on the workpiece, not shown here 130, in contrast to the prior art, no closed area forms, but rather a rectangular circumferential grinding surface 130 represents.
  • the Wall of the grinding segment 120 now comparatively thin, in Contrary to a fully solid grinding segment.
  • the Grinding heat is released to the environment much better as the grinding segment 120 now has an outer surface 134 and has an inner surface 136 available through which the heat to the Ambient air can be released.
  • the Heat transport much faster because of the thin-walled Grinding segment 120 is now less distance to travel.
  • the ventilation duct 152 the heat can then be dissipated so that No heat build-up occurs in the grinding segment 120.
  • Forming the grinding wheel 116 with ventilation channels 152 corresponds to the grinding tool shown in Figures 1a to 1c grinding tool known from EP 758 573 B1, on which on this Full reference is made.
  • the longitudinal central axis is 126 of the grinding wheel 116, and thus also the grinding segment 120 and in particular, the grinding surface 130 is inclined such that between the Grinding surface 130 and the surface of the workpiece an angle ⁇ trains.
  • the angle is ⁇ about 25 °.
  • the Angle ⁇ between 2 ° and 35 °.
  • the second embodiment of a grinding wheel 216 shown in FIG. 2 largely corresponds to the grinding wheel shown in FIGS. 1a to 1c 116, however, has four ventilation channels 252, all of which are connected to the Cavity 222 of the grinding segment 220 are operatively connected.
  • This Vent channels 252 are arranged near the support body 218 and in Formed a recess in the grinding segment 220, with each A ventilation duct 252 is arranged on the side of the grinding segment 220. Through the ventilation channels 252 more heated air can be released from the inside step of the grinding segment 220 into the open.
  • the abrasive wheel 216 can also be attached to the grinding plate 114 according to FIG. 1a.
  • the grinding tools 310, 410, 510 and 610 are analogous to the grinding tool 110 described above trained, but differ in the cross section of each Grinding segments 320, 420, 520, 620 from each other.
  • the grinding segment 320 of the grinding tool 310 according to FIG. 3 is in cross section as a regular trapezoid and the grinding segment 420 of the grinding tool 410 is designed as an equilateral triangle.
  • the grinding segment 320 is with its narrow side to Center axis 312 aligned and analogous to this shows a tip of the triangular grinding segment 420 towards the central axis 412.
  • the grinding segments 520 of the grinding tool 510 is oval in cross section, while the sixth grinding tool 610 shown in FIG Cross-section of rectangular grinding segment 620.
  • FIG. 7a and 7b is a seventh embodiment of an inventive Grinding tool 710, here a full grinding wheel, shown, which also has a grinding plate 714 rotating about a central axis 712 is provided, on which a large number of grinding wheels 716 are non-detachably attached are.
  • this grinding wheel settles 716 from a metallic carrier body 718 and a diamond grinding segment 720 together, both of which have the same cross-section and aligned flush with each other. This ensures good heat transfer reached.
  • a cavity 722 is provided in the grinding segment 720, while additionally a cavity 724 also exists in the carrier body 718 is provided, which are both aligned with each other.
  • This grinding wheel 716 can be soldered to the grinding plate 714 with its carrier body 718 or be welded on.
  • both the cavities 722, 724 are the carrier body 718 and the grinding segment 720 coaxially about a longitudinal central axis 726 arranged, the longitudinal central axis 726 not parallel is arranged to the central axis 712, but by the angle ⁇ opposite the central axis 712 is inclined. It follows that one Grinding surface 730 of grinding segment 720 having recess 732 by the angle ⁇ relative to the surface of a workpiece to be machined 738 is inclined. In this embodiment, the angle is ⁇ approx. 10 °.
  • a grinding channel 716 On the side facing the center of the grinding plate 714 A grinding channel 716 has a ventilation channel 752 in the carrier body 718 formed, which opens into the cavity 724 and with the cavity 722 is in operative connection. In this way, the cavity 722, 724 pent-up heat emerge. It is understood that in another Embodiment of the vent channel 752 also on another side of the Carrier body 718 can be attached and / or that a second Vent channel is provided.
  • FIG Grinding tool 810 essentially corresponds to that in FIGS. 7a and 7b shown seventh embodiment of the grinding tool 710, however, does not have a ventilation duct.
  • This vent hole 850 causes (analogous to the ventilation duct 152, 252, 752 in FIGS.
  • the grinding wheel 916 shown enlarged in FIG. 9 has one of four Sub-segments 942, 944, 946, 948 compound grinding segment 920, all of which are sintered in one piece with the carrier body 916: All four Sub-segments 942, 944, 946 and: 948 are in this way on the carrier body 918 attached that they enclose the cavity 922 and that in the A recess 932 remains in the grinding surface 930.
  • the subsegments 942, 944, 946, 948 are in a generally known manner provided with diamond chips.
  • the concentration of the diamond chips different in the four subsegments 942, 944, 946, 948, the sub-segment 942 and the lower segment 944 arranged at the front in the direction of rotation has a diamond splinter density of about 45%, while in the direction of rotation and feed rear sub-segments 946, 948 only a diamond splinter density of about 25%. This will make the circumstance Considered that the sub-segments lying in front in the direction of movement 942, 944 have to achieve a higher grinding performance.
  • the grinding wheel 916 shown in FIG. 9 also has one in the Carrier body 918 integrated ventilation channel 952, which with the cavity 922 is operatively connected inside the grinding segment 920.
  • This Vent channel 952 is thereby formed by two elongate carrier bodies 918, 919 limited to which the grinding segment 920 is applied. It understands that this grinding body 910 both on the grinding plate 714 of the Grinding tool 710 according to FIG. 7a, as well as on the grinding plate 814 of the Grinding tool 810 according to FIG. 8 can be attached.
  • the ventilation channel 952 is not only in operative connection with the cavity 922, 924, but also with the ventilation hole 850 according to FIG. 8, so that an even better air circulation and thus an even better heat dissipation is achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP01105769A 2000-03-14 2001-03-08 Segment de meulage diamanté et outil de meulage pour l'usinage de la surface de pièces Expired - Lifetime EP1136183B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10012073A DE10012073B4 (de) 2000-03-14 2000-03-14 Diamant-Schleifsegment und Schleifwerkzeug zur Oberflächenbearbeitung von Werkstücken
DE10012073 2000-03-14

Publications (3)

Publication Number Publication Date
EP1136183A2 true EP1136183A2 (fr) 2001-09-26
EP1136183A3 EP1136183A3 (fr) 2003-08-13
EP1136183B1 EP1136183B1 (fr) 2007-03-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105769A Expired - Lifetime EP1136183B1 (fr) 2000-03-14 2001-03-08 Segment de meulage diamanté et outil de meulage pour l'usinage de la surface de pièces

Country Status (3)

Country Link
EP (1) EP1136183B1 (fr)
AT (1) ATE357312T1 (fr)
DE (2) DE10012073B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2425925A1 (fr) * 2010-09-06 2012-03-07 WENDT GmbH Outil de ponçage pour le traitement par enlèvement de matériaux
JP2014117763A (ja) * 2012-12-14 2014-06-30 Disco Abrasive Syst Ltd 研削ホイール
JP2015223652A (ja) * 2014-05-27 2015-12-14 株式会社ディスコ 研削方法
CN117001467A (zh) * 2023-06-07 2023-11-07 中国工程物理研究院激光聚变研究中心 轻量化结构的反射镜磨削热膨胀抑制装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220944A1 (de) * 2012-11-16 2014-05-22 Hilti Aktiengesellschaft Bearbeitungsscheibe zur Bearbeitung eines Untergrundes
DE102016013110A1 (de) 2016-11-03 2018-05-03 Taghi Tawakoli Schleifwerkzeug mit verstellbarem Profil, T- Multi Profile
CN113290465A (zh) * 2021-06-09 2021-08-24 宁波诺丁汉大学 一种曲面磨削加工装置及方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE562128C (de) * 1931-11-03 1932-10-21 Billeter & Klunz Akt Ges Schleifkopf mit aus verschiedenartigem Schleifstoff zusammengesetzten Topfscheiben
DE1120928B (de) * 1954-08-23 1961-12-28 Diskus Werke Frankfurt Main Ag Stirnschleifscheibe mit hohlkastenfoermigen Schleifsegmenten
US2952103A (en) * 1957-04-04 1960-09-13 Bisterfeld & Stolting Grinding wheels with abrasive elements of rectangular shape
FR1589828A (fr) * 1967-10-27 1970-04-06
US3777443A (en) * 1970-04-15 1973-12-11 M Shaw Segmented griding wheel
DE2651879C2 (de) * 1976-11-13 1978-10-26 Hans 4980 Buende Sielemann Einrichtung zum Zuführen von Kühlmittel zur Innenseite einer topfförmigen Stirnschleifscheibe
JPS6048262A (ja) * 1983-08-24 1985-03-15 Fujimi Kenmazai Kogyo Kk ダイヤモンド砥石
US5518443A (en) * 1994-05-13 1996-05-21 Norton Company Superabrasive tool
US6196911B1 (en) * 1997-12-04 2001-03-06 3M Innovative Properties Company Tools with abrasive segments
CN1130274C (zh) * 1998-03-27 2003-12-10 诺顿公司 研磨工具

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2425925A1 (fr) * 2010-09-06 2012-03-07 WENDT GmbH Outil de ponçage pour le traitement par enlèvement de matériaux
JP2014117763A (ja) * 2012-12-14 2014-06-30 Disco Abrasive Syst Ltd 研削ホイール
JP2015223652A (ja) * 2014-05-27 2015-12-14 株式会社ディスコ 研削方法
CN117001467A (zh) * 2023-06-07 2023-11-07 中国工程物理研究院激光聚变研究中心 轻量化结构的反射镜磨削热膨胀抑制装置

Also Published As

Publication number Publication date
ATE357312T1 (de) 2007-04-15
EP1136183B1 (fr) 2007-03-21
EP1136183A3 (fr) 2003-08-13
DE50112212D1 (de) 2007-05-03
DE10012073B4 (de) 2004-12-16
DE10012073A1 (de) 2001-09-27

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