EP0321969A2 - Roulette de dressage et son procédé de fabrication - Google Patents

Roulette de dressage et son procédé de fabrication Download PDF

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Publication number
EP0321969A2
EP0321969A2 EP88121443A EP88121443A EP0321969A2 EP 0321969 A2 EP0321969 A2 EP 0321969A2 EP 88121443 A EP88121443 A EP 88121443A EP 88121443 A EP88121443 A EP 88121443A EP 0321969 A2 EP0321969 A2 EP 0321969A2
Authority
EP
European Patent Office
Prior art keywords
circumferential
dressing
grinding wheel
recesses
diamond needles
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
EP88121443A
Other languages
German (de)
English (en)
Other versions
EP0321969A3 (en
EP0321969B1 (fr
Inventor
Horst Josef Dr. Wedeniwski
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.)
Fortuna Werke Maschinenfabrik GmbH
Original Assignee
Fortuna Werke Maschinenfabrik 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 Fortuna Werke Maschinenfabrik GmbH filed Critical Fortuna Werke Maschinenfabrik GmbH
Publication of EP0321969A2 publication Critical patent/EP0321969A2/fr
Publication of EP0321969A3 publication Critical patent/EP0321969A3/de
Application granted granted Critical
Publication of EP0321969B1 publication Critical patent/EP0321969B1/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
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12—Dressing tools; Holders therefor
    • B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor

Definitions

  • the invention relates to a dressing roller with a circumferential peripheral surface which is set with diamonds.
  • Dressing rolls of the type mentioned above are known from the "Handbook of Manufacturing Technology" by G. Spur and Th. Stöfferle, Carl Hanser Verlag, 1980, Volume 3/2, page 144.
  • Known dressing rolls can be produced in such a way that a paste is applied to the surface of a cylindrical or double-conical dressing roll, which paste can be reduced chemically, so that ultimately a metallic coating remains on the surface of the dressing roll.
  • the diamonds are pressed into the paste by hand, according to a predetermined distribution plan with, for example, 40 diamonds per cm2.
  • the dressing process is carried out along a line on the grinding wheel if the dressing roller and the grinding wheel are arranged coaxially, as is customary turn in opposite directions and the dressing roller is guided at least approximately along a surface line of the grinding wheel.
  • a spiral-shaped dressing groove is then formed on the surface of the grinding wheel, so that it is only dressed in the area of this groove.
  • the invention is therefore based on the object of developing a dressing roller of the type mentioned at the outset in such a way that the grinding wheel is dressed flat and spiral dressing grooves are avoided.
  • the diamonds are designed as diamond needles which protrude obliquely from the circumferential surface and overlap with their free ends in the circumferential direction.
  • Another advantage is that during dressing, the surface areas of the grinding wheel are pre-dressed from the free end of the leading diamond needle and re-dressed by the trailing free end of the next diamond needle, so that this double engagement of the dressing roller in a short time interval and slightly offset points on the grinding wheel surface, a particularly effective smashing process occurs on the grinding wheel surface.
  • the diamond needles are arranged on two conical circumferential surfaces which intersect along an outer circumferential line and which Diamond needles protruding from a peripheral surface protrude with their free ends beyond the other peripheral surface.
  • the invention further relates to a method for producing a dressing roller of the aforementioned type.
  • pocket-shaped recesses are made according to the invention in the peripheral surface, the diamond needles are inserted with their lower ends into the recesses and fixed there by means of an investment material.
  • This measure has the advantage that a suitable angle of inclination for the diamond needles can already be predetermined by the configuration of the pocket-shaped recesses, so that the desired overlap occurs with a suitable length of the diamond needles.
  • the recesses are designed as a circumferential annular groove.
  • This measure has the advantage that the circumferential annular groove can be formed with simpler means in the manufacture of the dressing roller than is the case with individual recesses.
  • the recesses are made by means of wire EDM.
  • This measure has the advantage that when fine eroding wires are used, defined shaped and distributed recesses can be made in the peripheral surfaces, the position and position of which can also be adapted to the available diamond needles.
  • the investment material is a sintered material.
  • This measure has the advantage that the diamond needles can be securely fixed in the pocket-shaped recesses by a technologically simple process.
  • 10 designates a dressing roller as it is used to recondition worn grinding wheels.
  • the dressing roller 10 is of rotationally symmetrical shape and has two radial end faces 11. On the circumference it is provided with two conical peripheral surfaces 12, 13 which intersect approximately in the longitudinal center plane of the dressing roller 10 along an outer circumferential line 14.
  • the dressing roller 10 is provided on its right-hand conical peripheral surface 12 in FIG. 1 with diamond needles 15a, 15b, 15c ... and in a mirror-symmetrical manner 13 diamond needles 16a, 16b, 16c ... are arranged on the second conical peripheral surface.
  • the arrangement of the diamond needles 15 ... and 16 ... is selected so that they protrude obliquely from the circumferential surfaces 12, 13 and protrude with the free ends 17, 18 each above the other circumferential surface 13, 12. This results in a zipper-like arrangement in which the free ends 17, 18 overlap by an amount x.
  • the feed speed of a dressing roller of, for example, 400 mm / min and theoretically punctiform contact of the dressing roller on the grinding wheel results in an increase in the spiral dressing groove in of the order of 0.3 mm.
  • This slope must be taken into account when setting the amount x of the overlap on the dressing roller 10, so that for a given grinding wheel geometry and given data for the peripheral speed or speed of the grinding wheel and for a given feed speed of the dressing roller in the axial direction, a strip-shaped engagement area of the overlapping free ends 17, 18 arises on the grinding wheel, which does not leave any unadjusted surface areas.
  • pocket-shaped recesses 20 are now made in the peripheral surfaces 12, 13 in the vicinity of the peripheral line 14. These pocket-shaped recesses 20 run essentially in the axial direction, but can also be set slightly towards the axial direction.
  • the shape of the pocket-shaped recesses 20 is set so that the diamond needles 15 lie with their lower end 22 in the recess 20 and can be covered there with an investment material 23 such that the diamond needles 15 over a considerable part of them Length form fit in the recesses 20 with investment material 23.
  • the investment material 23 fills the entire annular groove 20a, as indicated by hatching in FIGS. 1 and 2.
  • the investment material 23 can, as clearly shown in FIG. 4, partially cover the peripheral surfaces 12 and 13 beyond the edge of the annular groove 20a or the recesses 20.
  • the investment material 23 can over it Extend to close to the tip of the diamond needles 15 as long as only a sufficiently long tip protrudes from the investment compound 23.
  • Either a reducible metal paste can be used as investment material 23, so that the diamond needles 15 are held in the recesses 20 after the reduction of the metallic investment compound 23, but a sintered material can also be used and the diamond needles 15 can be sintered into the recesses 20 by appropriate heat treatment .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP88121443A 1987-12-23 1988-12-22 Roulette de dressage et son procédé de fabrication Expired - Lifetime EP0321969B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3743813 1987-12-23
DE3743813 1987-12-23
DE3811783A DE3811783C1 (fr) 1987-12-23 1988-04-08
DE3811783 1988-04-08

Publications (3)

Publication Number Publication Date
EP0321969A2 true EP0321969A2 (fr) 1989-06-28
EP0321969A3 EP0321969A3 (en) 1990-06-13
EP0321969B1 EP0321969B1 (fr) 1992-03-11

Family

ID=25863161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121443A Expired - Lifetime EP0321969B1 (fr) 1987-12-23 1988-12-22 Roulette de dressage et son procédé de fabrication

Country Status (4)

Country Link
US (1) US4892082A (fr)
EP (1) EP0321969B1 (fr)
JP (1) JPH01216773A (fr)
DE (2) DE3811783C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426173A3 (en) * 1989-10-31 1991-07-17 Toyoda Koki Kabushiki Kaisha Rotary diamond dresser
EP0558869A1 (fr) * 1992-03-02 1993-09-08 Gebrüder Sulzer Aktiengesellschaft Objet comportant une surface abrasive et procédé pour sa fabrication

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19849259C1 (de) * 1998-10-26 2000-07-06 Kaiser Michael Diamant-Abrichtscheibe
US6308700B1 (en) * 1999-10-25 2001-10-30 Dr Kaiser Co. Process and manufacturing of a rotary diamond dresser for trueing and dressing of industrial grinding wheels

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE311079C (de) * 1917-03-21 1919-02-24 Otto Schmidts Patent Herkulessteine Gmbh Scharfrolle fur Holzschleifsteine
US2380451A (en) * 1943-04-19 1945-07-31 Koebel Diamond Tool Company Disk diamond dressing tool
US3154064A (en) * 1962-04-02 1964-10-27 Koebel Diamond Tool Co Multiple point diamond tool
DE1968017U (de) * 1967-05-20 1967-09-07 Winter & Sohn Ernst Diamant-werkzeug, insbesondere zum abrichten von schleifscheiben.
GB1449720A (en) * 1974-12-07 1976-09-15 Vnii Po Stroitelstvu Magistr Rotating cutting tool
DE3016740A1 (de) * 1980-04-30 1981-11-05 Lach-Spezial-Werkzeuge Gmbh, 6450 Hanau Abrichtwerkzeug
EP0116668B1 (fr) * 1983-02-22 1989-01-11 Ernst Winter & Sohn (GmbH & Co.) Rouleau de dressage diamanté pour le dressage de meules

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426173A3 (en) * 1989-10-31 1991-07-17 Toyoda Koki Kabushiki Kaisha Rotary diamond dresser
EP0558869A1 (fr) * 1992-03-02 1993-09-08 Gebrüder Sulzer Aktiengesellschaft Objet comportant une surface abrasive et procédé pour sa fabrication

Also Published As

Publication number Publication date
EP0321969A3 (en) 1990-06-13
US4892082A (en) 1990-01-09
DE3811783C1 (fr) 1989-09-14
JPH01216773A (ja) 1989-08-30
DE3869096D1 (de) 1992-04-16
EP0321969B1 (fr) 1992-03-11

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