EP0321972A2 - Meule de rectification et son utilisation - Google Patents

Meule de rectification et son utilisation Download PDF

Info

Publication number
EP0321972A2
EP0321972A2 EP88121446A EP88121446A EP0321972A2 EP 0321972 A2 EP0321972 A2 EP 0321972A2 EP 88121446 A EP88121446 A EP 88121446A EP 88121446 A EP88121446 A EP 88121446A EP 0321972 A2 EP0321972 A2 EP 0321972A2
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
edge
wheel according
grinding
axis
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.)
Withdrawn
Application number
EP88121446A
Other languages
German (de)
English (en)
Other versions
EP0321972A3 (fr
Inventor
Gunter Weinich
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 EP0321972A2 publication Critical patent/EP0321972A2/fr
Publication of EP0321972A3 publication Critical patent/EP0321972A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B24D5/02—Wheels in one piece
    • 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

Definitions

  • the invention relates to a grinding wheel for grinding workpieces, with a metal wheel which is essentially rotationally symmetrical with respect to a first axis and which is provided on its circumference with a narrow edge made of bound CBN grains.
  • the invention further relates to a grinding wheel of the type mentioned above for external cylindrical grinding of workpieces.
  • a grinding wheel of the type mentioned is known from US Pat. No. 3,742,654.
  • a metallic carrier body consists of a flat disk in the outer area and an axially extending hollow cylindrical receiving body in the area near the axis, the central receiving opening of which is partly conical, partly with a thread.
  • a narrow edge made of abrasive material, for example bonded CBN grains, is applied to a cylindrical peripheral surface of the disk-shaped metallic body.
  • the edge also has a hollow cylindrical shape.
  • the known grinding wheel is only suitable for engaging the workpiece with its cylindrical outer circumferential surface while aligning its axis of rotation parallel to the longitudinal axis of a workpiece.
  • Another grinding wheel is known from US Pat. No. 3,795,497, which can be designed as a grinding roller, cutting wheel or shaped grinding wheel.
  • a relatively thin edge made of grinding material is applied to a metallic body, details of which are not specified.
  • This edge has the shape of a hollow cylinder in the case of the grinding roller and the cutting-off grinding wheel, while in the case of a shaped grinding wheel it has e.g. has a corrugated shape in cross section.
  • a cup grinding wheel in which a metallic support body of a trapezoidal shape in radial section is provided with a sheet steel disk which projects radially beyond the support body. At the outer edge of the steel sheet disc, its radial side surface is provided with an annular edge made of abrasive material, so that a cup-shaped structure is created.
  • the well-known cup grinding wheel is used to grind flanks of teeth from gear wheels. For this purpose, the grinding wheel is inserted in the radial direction between two teeth of the grinding gear then axially moved the grinding wheel laterally with a radial grinding surface to a tooth flank.
  • CH-PS 364 191 also shows a disc grinding wheel, the design of which essentially corresponds to that of the previously described DE-OS 26 34 154.
  • the known grinding wheels have in common that they can only be applied to a surface of the workpiece with a single cutting surface, namely either a cylindrical circumferential surface or a flat radial end surface in the radial or axial direction.
  • the invention is based on the object of developing a grinding wheel of the type mentioned in such a way that grinding processes can be carried out in which at least two cutting surfaces on the workpiece are engaged while maintaining the mechanical stability of grinding wheels with a metallic carrier body and the advantageous grinding properties of CBN grains are.
  • the edge has two conical cutting surfaces inclined to the first axis, which are at an angle of substantially 90 ° cut, with one of the cutting surfaces as the main cutting surface perpendicular to a second axis of the workpiece.
  • the grinding wheel according to the invention When using the grinding wheel according to the invention, it is used for external cylindrical grinding of workpieces with a diameter between 5 and 250 mm at a grinding wheel peripheral speed between 100 and 300 m / s, a workpiece peripheral speed between 65 and 200 m / min and an axial feed speed between 150 and 2000 mm / min.
  • the object on which the invention is based is completely achieved in this way because surface grinding peeling can be carried out with the grinding wheel according to the invention, particularly when used according to the invention, in which material with a thickness of several millimeters is removed in a single pass at high axial feed speeds can be.
  • the grinding wheel according to the invention With the grinding wheel according to the invention, high chip removal volumes can be achieved. This leads to machining technology that is on a par with turning.
  • the advantage of grinding compared to turning is that the material chips occur in grain-like form during grinding, so that grinding machines can work fully automatically because the removal of the grinding chips is unproblematic. This is different for lathes, because turning chips arise as long spiral chips and, in an unfavorable constellation, these long chips can wrap around the workpiece and cause the turning machine to lock up. Lathes must therefore be monitored so that resulting swarf can be removed using a hook.
  • the edge is applied to a conical edge surface of the metal disk, which is positioned perpendicular to the workpiece axis in the area of the main cutting surface. But even if the edge surface is not conical, but for example as a circumferential cylindrical annular groove, a configuration results in which the edge is held in a form-fitting manner in the region of the main cutting surface perpendicular to a workpiece axis. In all of these embodiments, there is the advantage that the edge is applied to a conical edge surface of the metal disk, which is positioned perpendicular to the workpiece axis in the area of the main cutting surface. But even if the edge surface is not conical, but for example as a circumferential cylindrical annular groove, a configuration results in which the edge is held in a form-fitting manner in the region of the main cutting surface perpendicular to a workpiece axis. In all of these embodiments, there is the advantage that the edge is applied to a conical edge surface of the metal disk, which is positioned
  • Edge is held by the metallic base body with a contact surface that is perpendicular to the main direction of the force that is exerted on the grinding wheel when grinding a workpiece.
  • the receiving opening is designed as a polygon.
  • This measure has the advantage that the arrangement can be made reproducibly and without play, compared to cylindrical or conical receiving openings, because with a polygon shaped receiving opening is always a defined number of contact points between the receiving opening and the polygon mandrel of the grinding wheel spindle.
  • 10 designates a grinding wheel, the central region 11 of which is thicker and the peripheral region 12 of which is thinner.
  • An edge 13 of the grinding wheel 10 consists of an abrasive material, as will be explained in more detail below in relation to FIG. 3.
  • the grinding wheel 10 is provided with a polygonal receiving opening 14.
  • the receiving opening 14 has the shape of a polygon, e.g. a P3G polygon according to DIN 32 711, but it goes without saying that instead of a triangle, a square or pentagon or some other non-rotationally symmetrical shape can also be selected.
  • the axis of the grinding wheel 10 is designated 15.
  • Fig. 3 shows the section III of Fig. 2 on an enlarged scale and in further details.
  • the grinding wheel 10 essentially consists of a metal wheel 16 which is provided with two radial surfaces 17 and 18 in the thinner, peripheral region 12. These surfaces can project axially towards the edge 13, shown at 19 in FIG. 3.
  • the surfaces 17 and 18 of the thinner, peripheral region 12 merge into the thicker, central region 11 via conical transition surfaces 20, 21 or cylindrical shoulders 22 attached to them.
  • the edge 13 made of abrasive material is attached, preferably glued, to a conical edge surface 23 on the periphery of the peripheral thinner region 12.
  • the conical edge surface 23 extends at a cone angle 24.
  • the cone angle 24 is preferably 26 ° 34 '. This value is chosen because its tangent is just 0.5, which makes it easier to convert the path coordinates during the feed movement of the grinding wheel and / or the workpiece.
  • the abrasive material consists of CBN grains 25, which are embedded in an investment compound 26.
  • the investment material 26 can be, for example, a ceramic, a synthetic resin or a galvanized or sintered metal.
  • the edge 13 has a main cutting surface 30 and a secondary cutting surface 31 which run at an angle of 90 ° to one another.
  • the secondary cutting surface 31 preferably runs parallel to the conical edge surface 23.
  • edge 13 can be made wider in the axial direction than the peripheral, thinner region 12.
  • the grinding wheel 10 engages with the main cutting surface 30 on the workpiece.
  • the direction 37 runs parallel to a direction 36 of the workpiece axis.
  • FIG. 4 differs from the exemplary embodiment in FIG. 3 essentially in that it is not a conical but a cylindrical edge surface 23a that is provided on the periphery of the thinner region 12 to which the edge 13a is applied, in particular glued on.
  • the edge 13a again has a main cutting surface 30 and a secondary cutting surface 31, which run at the same angles as was the case in the exemplary embodiment in FIG. 3.
  • a front surface 34 which runs flat and merges flush with the third surface 19.
  • the thinner area 12a is also widened in both axial directions, as indicated by 38 and 19a.
  • the thin edge 12b is bent off at 60 at the outer end, so that a conical edge surface corresponds to 23b.
  • the angle of the cranked area 60 is chosen equal to the angle 24 of preferably 26 ° 34 '.
  • the conical edge surface 23b is thus perpendicular to the direction 37, in which the main force component acts on the edge 13b during grinding.
  • the cranked region 60 can be provided on its inner circumference with a ring 61 which projects beyond the conical edge surface 23b in the direction of the cranking.
  • FIG. 6 shows a further variant in which reference numerals are provided with the letter "c".
  • a cranked area 60c of the thin area 12c is provided, but the edge 13c is of two-leg design in radial cross section with an outer leg 13c / 1 and an inner leg 13c / 2, which rests on the conical edge surface 23c.
  • An outermost circumferential line 64 of the bent-off area 60c is covered on both sides by the edge 13c, so that a positive connection also occurs in this way when a force acts on the edge 13c parallel to the conical edge surface 23c.
  • the main cutting surface 30c merges radially inwards into a conical surface 65, in order in this way to achieve a continuous transition to the cranked region 60c.
  • a conical annular groove 70 is introduced into a non-cranked thin region 12, one boundary surface of which is a conical edge surface perpendicular to direction 37 and the other boundary surface of which is a conical edge surface parallel to direction 37.
  • the embodiment of FIG. 7 is particularly preferred because it is of a very simple construction.
  • the letter "e” is added to the reference symbol and it can be seen that the narrow edge 12e is again bent at 60e.
  • FIG. 9 shows yet another example in which the letter "f" is added to the reference numerals.
  • the thin region 12f is bent off at 60f on the outer edge.
  • a cylindrical circumferential annular groove 80 is introduced, which holds the edge 13f - in the illustration in FIG. 9 - positively to the left, while the edge 13f to the right again forms a radial surface 76f, as already shown in FIG. 8 has been described.
  • FIG. 10 shows an example of a typical application of the grinding wheel 10d according to the invention.
  • a workpiece 90 for example a shaft, is subjected to external cylindrical grinding in the machining process illustrated in FIG. 5.
  • 91 is the raw size and 92 the finished size of the workpiece 90.
  • the radius r of the grinding wheel 10d is approximately 300 mm and the radial width b of the edge 13d is approximately 5 to 15 mm.
  • the axial thickness d of the peripheral region 12d is approximately 15 mm and that of the central region 11 of the grinding wheel 10 is approximately 25 mm.
  • the workpiece 90 can have a diameter between 5 and 250 mm, the difference between the raw dimension 91 and the finished dimension 92 being in the order of a few millimeters.
  • the grinding wheel 10d is now rotated at a speed at which the peripheral speed is between 100 and 300 m / s.
  • the peripheral speed of the workpiece 90 is between 65 and 200 m / min.
  • the axial feed rate indicated by 95 in FIG. 10 is of the order of magnitude between 150 and 2000 mm / min.
  • the edge 13d processes the workpiece 90 in the area of the helicoidal transition 93 with the main cutting surface 30d, while the secondary cutting edge 31d rests on the finished surface of the workpiece 90 with the finished dimension 92.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP88121446A 1987-12-23 1988-12-22 Meule de rectification et son utilisation Withdrawn EP0321972A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3743810 1987-12-23
DE3743810 1987-12-23
DE3810138 1988-03-25
DE19883810138 DE3810138A1 (de) 1987-12-23 1988-03-25 Schleifscheibe

Publications (2)

Publication Number Publication Date
EP0321972A2 true EP0321972A2 (fr) 1989-06-28
EP0321972A3 EP0321972A3 (fr) 1990-06-13

Family

ID=25863156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121446A Withdrawn EP0321972A3 (fr) 1987-12-23 1988-12-22 Meule de rectification et son utilisation

Country Status (3)

Country Link
EP (1) EP0321972A3 (fr)
JP (1) JPH01216777A (fr)
DE (1) DE3810138A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062097B2 (en) 2006-12-21 2011-11-22 Cinetic Landis Limited Grinding surfaces of workpieces
DE102014103719A1 (de) * 2014-03-19 2015-09-24 Dr. Müller Diamantmetall AG Schälschleifwerkzeug

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039805A1 (de) * 1990-12-13 1992-06-17 Schaudt Maschinenbau Gmbh Schleifscheibe
DE19505844B4 (de) * 1995-02-21 2004-11-11 Diamant-Gesellschaft Tesch Gmbh Verfahren zum Herstellen und Verwenden eines Schleifringes für Schleifscheiben sowie Schleifring für Schleifscheiben und Vorrichtung zur Verfahrensdurchführung
JP6667100B2 (ja) * 2015-12-14 2020-03-18 株式会社ジェイテクト ツルア、これを備えたツルーイング装置、研削装置及びツルーイング方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038435B (de) * 1954-03-20 1958-09-04 Werner Osenberg Dr Ing Schleifwerkzeug zur Bearbeitung von Werkstoffen hoher Festigkeit und Haerte mit konzentrisch auf einer Traegerscheibe angeordneten Hartstoff-Schleifringen
CH364191A (de) * 1958-10-10 1962-08-31 Maag Zahnraeder & Maschinen Ag Tellerschleifscheibe
US3795497A (en) * 1969-06-10 1974-03-05 S Weiss Metal bonded grinding wheels
JPS5216760Y2 (fr) * 1971-09-11 1977-04-15
US3742654A (en) * 1971-12-22 1973-07-03 Gen Electric Abrasive grinding wheel construction
DE2510393A1 (de) * 1975-03-10 1976-09-23 Zahnradfabrik Friedrichshafen Verfahren und vorrichtung zum kopierabrichten mit diamantscheibe
DE2634154A1 (de) * 1976-04-13 1977-10-27 Diamant Boart Sa Topfschleifscheibe
JPS5354999A (en) * 1976-10-29 1978-05-18 Toshiba Corp Target for x-ray tube
JPS54152292A (en) * 1978-05-22 1979-11-30 Tdk Electronics Co Ltd Grinding wheel
JPS5917572Y2 (ja) * 1980-06-13 1984-05-22 豊田工機株式会社 研削用砥石

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062097B2 (en) 2006-12-21 2011-11-22 Cinetic Landis Limited Grinding surfaces of workpieces
DE102014103719A1 (de) * 2014-03-19 2015-09-24 Dr. Müller Diamantmetall AG Schälschleifwerkzeug

Also Published As

Publication number Publication date
JPH01216777A (ja) 1989-08-30
DE3810138A1 (de) 1989-07-06
EP0321972A3 (fr) 1990-06-13

Similar Documents

Publication Publication Date Title
DE69013639T2 (de) Bohrer.
DE68918084T2 (de) Schleifscheibe.
EP0542026B1 (fr) Procédé d'usinage de surface à symétrie de rotation, en particulier vilebrequin, ainsi que outil pour la réalisation d'un tel procédé
EP0182290A2 (fr) Tête de fraisage
DE3733298A1 (de) Mehrzweckwerkzeug
EP1533078B1 (fr) Outil de meulage scindé
EP2301696A1 (fr) Interface entre un corps de réception et un insert, l'insert étant notamment développé comme support d'outil ou de pièce à usiner
EP0312830B1 (fr) Procédé pour meuler les surfaces cylindriques exterieures de pièces
DE4119162C1 (fr)
DE102004022360B4 (de) Verfahren zur Feinbearbeitung, vorzugsweise zur Feinstschlichtbearbeitung, von Werkstücken vorzugsweise von Kurbelwellen
EP0321972A2 (fr) Meule de rectification et son utilisation
DE3205051C2 (de) Bohrwerkzeug
EP0530691A1 (fr) Meule de rectification
EP0089545A1 (fr) Fraise à plaquettes indexables
DE2644827C3 (de) Spitzbohrwerkzeug
DE202006016531U1 (de) Schlicht-/Schruppfräser
DE29603475U1 (de) Bohrwerkzeug
EP3507044B1 (fr) Outil de fraisage à un seul tranchant
DE19643192A1 (de) Verfahren zum Bearbeiten von rotationssymmetrischen Werkstückflächen sowie Werkzeug zur Durchführung eines solchen Verfahrens
EP1027186B1 (fr) Outil pour l'usinage fin de surfaces d'alesages
DE7710873U1 (de) Bohrwerkzeug
WO1998051447A1 (fr) Meule de rectification pour lame scie circulaire metaux
DE8713249U1 (de) Mehrzweckwerkzeug
DE3524434C1 (de) Werkzeugmaschinenspindel und hierzu passende Werkzeughalter
DE19955152C2 (de) Nachschleifbare Zentrierbohrung für gehärtete Rotationsteile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19891229