EP0430207B1 - Rouleau de contact pour machine à meuler à bande - Google Patents

Rouleau de contact pour machine à meuler à bande Download PDF

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Publication number
EP0430207B1
EP0430207B1 EP90122747A EP90122747A EP0430207B1 EP 0430207 B1 EP0430207 B1 EP 0430207B1 EP 90122747 A EP90122747 A EP 90122747A EP 90122747 A EP90122747 A EP 90122747A EP 0430207 B1 EP0430207 B1 EP 0430207B1
Authority
EP
European Patent Office
Prior art keywords
contact roller
rings
roller according
intermediate layer
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.)
Expired - Lifetime
Application number
EP90122747A
Other languages
German (de)
English (en)
Other versions
EP0430207A1 (fr
Inventor
Rainer Grau
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.)
Hans Weber Maschinenfabrik GmbH
Original Assignee
Hans Weber 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 Hans Weber Maschinenfabrik GmbH filed Critical Hans Weber Maschinenfabrik GmbH
Publication of EP0430207A1 publication Critical patent/EP0430207A1/fr
Application granted granted Critical
Publication of EP0430207B1 publication Critical patent/EP0430207B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • B24B21/14—Contact wheels; Contact rollers; Belt supporting rolls

Definitions

  • the invention relates to a contact roller for belt grinding machines with a steel core and a jacket surrounding the latter, comprising an intermediate layer of elastically flexible material that at least partially covers the steel core and a plurality of outer elements made of a hard material that are arranged on the outer surface of the intermediate layer and are intended for contact with the grinding belt .
  • a contact roller is known from German utility model 1 953 917, in which the steel core is surrounded by a rubber jacket.
  • This rubber jacket can be armored or provided with a different profile.
  • the rubber jacket can also consist of layers of different Shore hardness.
  • rollers that have a steel jacket.
  • rollers with a relatively soft surface have a high tolerance for workpiece unevenness, but that they only permit a small amount of removal, since the sanding belt does not have the required Force can be pressed onto the workpiece.
  • Such rollers are therefore not suitable for achieving high cutting performance on metallic workpieces.
  • rollers with a hard surface for example a steel jacket, enable high stock removal per unit of time.
  • they do not allow tolerance compensation for workpieces that are not completely flat.
  • the invention has for its object to provide a contact roller of the type mentioned, which on the one hand enables high cutting performance and on the other hand tolerance compensation for uneven workpieces.
  • the elements made of the hard material are formed by closed rings which enclose the elastic intermediate layer and by ring grooves are axially separated from each other.
  • the rings In the unloaded state, the rings form a smooth, hard cylindrical surface interrupted by grooves, which enables high removal per unit of time and is therefore particularly suitable for grinding metallic workpieces.
  • the rings can deflect in the radial direction due to the elastic intermediate layer in the event of local unevenness or even a distortion of the workpiece, i.e. move radially relative to each other. This enables a tolerance compensation without reducing the grinding performance. This tolerance compensation is also possible without, for example, grinding or chamfering the edges of the workpieces, as is the case with contact rollers with a soft surface. Because the rings move radially as a whole, there is no imbalance when the contact roller rotates.
  • the rings are expediently made of steel.
  • the grooves between the rings are used to cool the grinding belt.
  • the groove width and the width of the rings are dimensioned and the ring segments themselves are shaped such that - viewed over a circumferential line of the contact roller - the rings overlap several times.
  • the ring grooves are continuously curved in such a way that they intersect an axis-normal central plane four times.
  • the edges of the rings can follow the contour of a cutting line, which results from a cut of each ring with a cylinder, the diameter of which compared to the ring diameter is large and its axis is perpendicular to the ring axis. This design of the rings ensures that the ring segments have no imbalance in themselves, even though their edges are not in a plane normal to the axis. This prevents the rings from tumbling.
  • the intermediate layer can consist of natural or synthetic rubber, the Shore hardness of this intermediate layer being able to vary to a relatively large extent.
  • the intermediate layer does not consist of a compact cylinder, but instead of a plurality of ribs which are spaced apart and parallel to one another.
  • the ribs are preferably oriented axially parallel. This formation of the intermediate layer facilitates the assembly of the rings on the intermediate layer.
  • the contact roller according to the invention combines the advantages of the previous different types of contact rollers.
  • the contact roller according to the invention adapts to unevenness in the workpiece surface, thus enabling tolerance compensation. Tolerance fluctuations due to different workpiece thicknesses are compensated for without readjusting the roller.
  • a high chip removal is achieved while maintaining the above-mentioned advantages, since the abrasive grain lies against the steel jacket and cannot be pressed back into the rubber jacket like with a rubber roller.
  • the heating of the grinding material is less, so that it warps less.
  • the workpiece edges are also not accidentally ground round or at an angle.
  • the steel rings can in turn be coated on their outer peripheral surface, e.g. with a rubber layer.
  • the contact roller for a belt grinding machine shown in FIG. 1 comprises a shaft or a core 10, which is surrounded by an intermediate layer 12 or segments made of rubber or a similar elastic material. This in turn is surrounded by a large number of ring segments 14, which are arranged axially next to one another, each separated by annular grooves 16.
  • the ring segments 14 are preferably made of steel. Their circumferential surfaces aligned with one another form a cylindrical outer surface interrupted by the annular grooves 16.
  • the ring segments 14 Due to the arrangement of the ring segments 14 on the elastic intermediate layer 12, the ring segments 14 can move in the radial direction in the direction of the double arrow A in FIG. 1.
  • the shape of the ring segments 14 or the grooves remaining between them, which serve to cool the grinding belt, are shaped such that they are completely symmetrical with respect to the axis of rotation 18 of the contact roller. This can be seen in particular from FIG. 2.
  • the cutting plane of Figure 2 runs exactly through the axis-normal center of a groove 16, i.e. in the middle between two axially normal planes 20 and 22 that delimit the groove.
  • Each ground point on the circumference of a ring segment corresponds to a diametrically opposite, similar ground point, so that the ring segments 14 are completely balanced. They do not wobble around the axis of the contact roller.
  • the groove intersects the central plane, ie the sectional plane of FIG. 2, viewed four times over one revolution.
  • the ring segments adjacent to this groove overlap in the circumferential direction, as is due to the different Hatching is indicated in Figure 2. This prevents the grooves 16 from forming on the workpiece surface during the grinding process.
  • FIG. 5 shows a modified embodiment of the contact roller according to the invention, wherein the intermediate layer does not consist of a closed cylindrical layer, but is formed by four ribs 12 ′ which are arranged on the core 10 with the same spacing from one another.
  • the material of the ribs 12 ′ corresponds to the material of the intermediate layer 12 in the embodiment according to FIGS. 1 to 4.
  • All other elements of the contact roller according to FIG. 5 correspond to those of the embodiment according to FIGS. 1 to 4.
  • the solution shown in Figure 5 has the advantage that the rings or ring segments 14 can be assembled more easily.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (8)

  1. Rouleau de contact pour des ponceuses à bande, comportant un noyau en acier (10), une enveloppe entourant ce noyau et comprenant une couche intermédiaire (12, 12'), réalisée en un matériau élastiquement déformable et recouvrant au moyen partiellement le noyau en acier (10), et une multiplicité d'éléments extérieurs (14) en un matériau dur, disposés sur la surface extérieure de la couche intermédiaire (12, 12') et destinés à contacter la bande abrasive, caractérisé en ce que les éléments en matériau dur sont constitués par des anneaux fermés (14), qui entourent la couche intermédiaire élastique (12, 12') et sont axialement juxtaposés en étant séparés les uns des autres par des rainures annulaires (16).
  2. Rouleau de contact selon la revendication 1, caractérisé en ce que les anneaux (14) sont réalisés en acier.
  3. Rouleau de contact selon la revendication 1 ou 2, caractérisé en ce que la largeur des rainures (16) et la largeur des anneaux (14) sont dimensionnées de telle sorte que, en considérant une direction circonférentielle du rouleau de contact, des anneaux (14) voisins se chevauchent plusieurs fois.
  4. Rouleau de contact selon la revendication 3, caractérisé en ce que la courbure continue que présentent les bords des anneaux (14) et la distance mutuelle qui sépare deux anneaux (14) voisins, sont choisies de telle sorte que la rainure annulaire (16) qui s'étend entre eux coupe quatre fois un plan médian (II-II) perpendiculaire à l'axe.
  5. Rouleau de contact selon la revendication 4, caractérisé en ce que les bords des anneaux (14) suivent le contour d'une ligne de coupe obtenue par l'intersection des anneaux (14) avec un cylindre dont le diamètre est grand par rapport au diamètre des anneaux et dont l'axe est perpendiculaire a l'axe desdits anneaux.
  6. Rouleau de contact selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la couche intermédiaire est constituée d'une multiplicité de nervures (12'), qui sont disposées à distance et parallèlement entre elles sur le noyau (10).
  7. Rouleau de contact selon la revendication 6, caractérisé en ce que les nervures (12') sont orientées parallèlement à l'axe.
  8. Rouleau de contact selon l'une quelconque des revendications 2 à 7, caractérisé en ce que les anneaux en acier (14) sont recouverts d'un autre matériau sur leur surface périphérique extérieure, par exemple de caoutchouc.
EP90122747A 1989-11-30 1990-11-28 Rouleau de contact pour machine à meuler à bande Expired - Lifetime EP0430207B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8914141U 1989-11-30
DE8914141U DE8914141U1 (fr) 1989-11-30 1989-11-30

Publications (2)

Publication Number Publication Date
EP0430207A1 EP0430207A1 (fr) 1991-06-05
EP0430207B1 true EP0430207B1 (fr) 1993-06-16

Family

ID=6845059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122747A Expired - Lifetime EP0430207B1 (fr) 1989-11-30 1990-11-28 Rouleau de contact pour machine à meuler à bande

Country Status (3)

Country Link
US (1) US5085010A (fr)
EP (1) EP0430207B1 (fr)
DE (2) DE8914141U1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673563B1 (fr) * 1991-03-08 1993-06-11 Skid Sa Appareil a poncer les skis.
US5339570A (en) * 1992-08-17 1994-08-23 Minnesota Mining And Manufacturing Company Contact wheel
US5820446A (en) * 1996-06-07 1998-10-13 Komag, Incorporated Apparatus and method for texturing rigid-disk substrates
US7303464B1 (en) 2006-10-13 2007-12-04 3M Innovative Properties Company Contact wheel
TW201244953A (en) * 2011-05-03 2012-11-16 Hon Hai Prec Ind Co Ltd Paper transmitting apparatus
US10974919B2 (en) * 2012-11-14 2021-04-13 Shark Wheel, Inc. Device and method for aligning material sheets
CN104249284A (zh) * 2013-06-25 2014-12-31 苏州意玛斯砂光设备有限公司 一种砂光机接触辊
CN110491583B (zh) * 2019-09-10 2021-02-09 武汉新天地电工科技有限公司 矿物质无卤低烟阻燃电缆

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145418A (en) * 1937-10-30 1939-01-31 Minnesota Mining & Mfg Roll for grinding and polishing
US2162279A (en) * 1938-07-30 1939-06-13 Minnesota Mining & Mfg Method of and apparatus for grinding and polishing
FR1046044A (fr) * 1950-12-28 1953-12-02 Scheer & Cie C F Cylindre de commande pour bandes à meuler
US2605592A (en) * 1951-05-10 1952-08-05 William J Cosmos Contact wheel, mainly for finishing belts
US2725691A (en) * 1953-02-12 1955-12-06 Sommer & Maca Glass Machinery Platen and support for abrading apparatus
US2977725A (en) * 1957-05-13 1961-04-04 Joseph A Simendinger Contact wheels
US3229424A (en) * 1963-05-31 1966-01-18 Joseph J Fielder Concentric motor and cooling pulley assembly for abraders and the like
DE1953917U (de) * 1964-01-18 1967-01-19 Kemper Kontakt Gert Kemper Wup Kontaktscheibe fuer bandschleifmaschinen.
US3263517A (en) * 1965-06-14 1966-08-02 William J Cosmos Molded industrial contact wheel
US3553899A (en) * 1967-09-04 1971-01-12 Meinan Machinery Works Pressure roller in a sanding device

Also Published As

Publication number Publication date
DE59001785D1 (de) 1993-07-22
EP0430207A1 (fr) 1991-06-05
US5085010A (en) 1992-02-04
DE8914141U1 (fr) 1991-03-28

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