EP1424162B1 - Machine à traitement de surface avec disposition de roulements - Google Patents

Machine à traitement de surface avec disposition de roulements Download PDF

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Publication number
EP1424162B1
EP1424162B1 EP03021427A EP03021427A EP1424162B1 EP 1424162 B1 EP1424162 B1 EP 1424162B1 EP 03021427 A EP03021427 A EP 03021427A EP 03021427 A EP03021427 A EP 03021427A EP 1424162 B1 EP1424162 B1 EP 1424162B1
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EP
European Patent Office
Prior art keywords
rolling
bearing
contact
machine frame
bearings
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
EP03021427A
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German (de)
English (en)
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EP1424162A1 (fr
Inventor
Jürgen Dipl.-Ing. Heesemann
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Individual
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Individual
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Publication of EP1424162A1 publication Critical patent/EP1424162A1/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
    • B24B41/007—Weight compensation; Temperature compensation; Vibration damping
    • 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

Definitions

  • the invention relates to a processing machine with a machine frame and a relative thereto via a drive shaft movably arranged processing element, wherein the drive shaft is coupled with a floating bearing assembly to the machine frame and the processing element.
  • the invention further relates to a movable bearing arrangement with a first rolling bearing and a second rolling bearing, in particular for use in such a processing machine and a method for supporting a rotatably driven shaft with such a movable bearing assembly.
  • a vibratory drivable pressing element for pressing abrasive material is carried on a workpiece with drive shafts on a machine frame.
  • the pressure element and the machine frame extend in a longitudinal direction transversely to the conveying direction of the workpiece to be machined. Due to the heating occurring during processing
  • the machining element, ie the pressure element, and the machine frame expand differently. This effect is partially reinforced by the fact that, for example, in grinding machines, the pressure element for weight saving of aluminum and the machine frame is made of steel.
  • Such a grinding machine is for example in the EP 0 543 947 B1 respectively.
  • the machining element is rotatably attached to the machining element and the machine frame by means of linear roller bearings. Due to the heat-related linear expansion of the machine frame and the machining element, relatively large loads of the linear rolling bearings occur in the longitudinal direction of the machining element and of the machine frame.
  • a bearing assembly in which a needle bearing are arranged together with a ball bearing on a shaft and have a common connection bearing shell.
  • This connection bearing shell is provided as usual for fixed installation.
  • the object of the invention was to provide an improved processing machine and a movable bearing for this purpose, intercepted in the loads of the movable bearing and destruction of the movable bearing is avoided.
  • the floating bearing assembly at least two coupled bearings with a drive shaft coupled to the first roller bearing and arranged on the machine frame second roller bearing and a common Connecting bearing shell has, wherein the connecting bearing shell carries the rolling elements of the coupled first and second bearings and is rotatable and / or reciprocally driven so that the rolling elements are kept in motion.
  • first and second bearings have a common joint bearing shell, which is the rolling elements of the first and second bearings carries and is rotatable and / or reciprocally driven, the rolling elements are kept in motion.
  • the common connecting bearing shell and the driving of the same is permanently ensured that the rolling elements are moved continuously and thus a permanent lubrication is ensured.
  • the rolling elements are constantly loaded at different points, so that a Abplatten the rolling elements is prevented.
  • the processing machine is preferably a grinding machine with an elongated pressure element for abrasive as a processing element.
  • the pressure element is preferably carried with two drive shafts on the machine frame.
  • the drive shafts are in this case spaced apart in the longitudinal direction of the pressure element.
  • the longitudinal direction of the pressure element also determines the main expansion direction.
  • At least one of the drive shafts is coupled to the movable bearing assembly according to the invention to the machine frame. In this way, one of the drive shafts is fixed longitudinally and the other drive shaft is loosely mounted in the longitudinal direction and a longitudinal extent of the pressure element and / or the machine frame is compensated.
  • the drive shaft is rotatably mounted on a carrier and the processing element, wherein the first roller bearing is connected to the carrier and the second roller bearing to the machine frame.
  • the rolling bearings are designed as linear bearings.
  • one in the main expansion direction reciprocable or preferably in a preferred direction rotatable connection axis is provided as a connecting bearing shell, which extends through the rolling bearings and these coupled together.
  • the rolling elements of the rolling bearings are kept permanently in motion and lubricated due to the reciprocating motion or rotation of the connecting shaft.
  • the carrier is preferably coupled to the machine frame with spring elements acting in the main expansion direction. In this way, in addition to the frictional engagement in the main expansion direction between the connecting shaft and the rolling bearings, a further adhesion between the carrier and the machine frame is effected.
  • two mutually parallel in the longitudinal direction of the pressure element extending connecting axes are provided, which are each arranged with a linear bearing on the carrier in the longitudinal direction of the connecting axes back and forth.
  • the connecting axes are arranged in the longitudinal direction of the machine frame, which can be moved back and forth in each case with a linear bearing.
  • the carrier is mounted fixed and movable only in the main expansion direction on the machine frame.
  • the at least one drive shaft can be designed as an eccentric, so that a vibrating movement of the processing element, for example, the pressure element of a grinding machine is effected when the drive shafts are driven in rotation.
  • the carrier are biased with pressure elements in the axial direction of the drive shafts on the machine frame, so that pressure forces are impressed on the carrier.
  • the at least one drive shaft is driven for example via a toothed belt drive, which should be biased with a clamping device in order to realize a certain clearance compensation.
  • the rolling bearings can be about a common axis centrically arranged linear bearings.
  • the outer ring of the first roller bearing is in this case enclosed by the inner ring of the second rolling bearing, wherein the outer ring with the inner ring form the connecting bearing shell.
  • the axis of the first bearing can also be slightly offset about the axis of the second bearing to cause eccentricity of the rotation.
  • the rolling bearings are designed as linear bearings and coupled to one another in the Lagerachsplatz extending reciprocating connection axis as a driven connecting bearing shell.
  • loads of the movable bearing are compensated in the direction of the extension direction of the connecting axis.
  • a second and third rolling bearing is provided on both sides of the first rolling bearing slidably disposed on the connecting axis in the axial direction of the connecting axis.
  • the first rolling bearing can in this case be connected to the machine frame and the second and third rolling bearing with the carrier, or vice versa.
  • connection axes are arranged parallel to each other, wherein the connection axes each carry first, second and third roller bearings.
  • a movable bearing assembly is provided with which a mounted on the first bearings carrier kippfest can be attached to a mounted on the second and third bearings machine frame.
  • FIG. 1 shows a processing machine 1 in the embodiment of a grinding machine with a machine frame 2 extending in the longitudinal direction L, which is designed as a steel carrier.
  • a processing element 3 is arranged, which forms an aluminum pressure element for abrasive, which is pressed onto a workpiece to be machined and not shown.
  • the machining element is held on the machine frame 2 with two eccentric drive shafts 4 and 5.
  • the drive shafts 4 and 5 are arranged spaced apart from one another in the longitudinal direction L and are each rotatably mounted on the processing element 3 with a bearing 6a, 6b.
  • the drive shafts 4 and 5 are driven by a toothed belt drive 7.
  • the toothed belt drive 7 has a drive motor 8 and in each case a toothed belt 9a, 9b, which extends from a toothed belt pulley 10 on the shaft of the drive motor 8 to a toothed belt pulley 11a, 11b of the respective associated drive shaft 4, 5.
  • the drive shaft 4 shown on the left in Figure 1 is rotatably coupled with a bearing assembly forming a bearing assembly 12 fixed to the machine frame 2.
  • the drive shaft 5 shown on the right in Figure 2 is supported by a movable bearing assembly 13 of the machine frame 2.
  • the movable bearing assembly 13 is displaceable substantially in the longitudinal direction L, which is also the main expansion direction during operation of the processing machine 1.
  • L which is also the main expansion direction during operation of the processing machine 1.
  • the drive shaft 5 which is displaceable in the longitudinal direction L, ensures that the toothed belt 9b is tensioned.
  • the stored drive shaft 5 is rotatably mounted on a carrier 14.
  • This support 14 is in turn mounted with rolling elements in the longitudinal direction L conductive on a connecting axis 15, which also extends in the longitudinal direction L, ie the main expansion direction.
  • a second and third rolling bearing 16a, 16b is provided on the connecting shaft 15 in each case.
  • the first and second rolling bearings 16 a, 16 b are designed as a Linear_Wälzlager whose outer ring is fixedly connected to the machine frame 2.
  • the carrier 14 with the first rolling bearing integrated therein thus forms together with the connecting shaft 15 and the first and second rolling bearings 16a and 16b a displaceable in the longitudinal direction L movable bearing for the drive shaft. 5
  • the connecting shaft 15 is coupled to a lifting motor 17, for example, via an eccentric shaft so that the connecting shaft 15 performs a reciprocating motion in the longitudinal direction L.
  • a permanent movement of the rolling elements and a permanent lubrication of the first, second and third roller bearings is ensured. In this way, loads acting on the movable bearing 13, intercepted and destruction of the movable bearing 13 can be avoided.
  • the carrier 14 is also coupled via a spring arrangement 18, so that in addition to the frictional engagement of the first, second and third roller bearings, a further frictional connection is ensured and forces of the toothed belt 9b are collected.
  • FIG. 2 shows the section of the processing machine 1 shown as a circle in FIG. 1 in the view rotated through 180 °. It is clear that at both ends of the cylindrical support 14 in each case a first rolling bearing 19a, 19b is provided in the form of a linear roller bearing whose rolling elements are supported by the connecting shaft 15. On both sides of the carrier 14, the second and third roller bearings 16a, 16b are then also arranged in the form of a linear roller bearing on the connecting axis 15.
  • the connecting shaft 15 forms a connecting bearing shell for the rolling bodies of the first, second and third rolling bearing 19a, 19b, 16a, 16b.
  • the connecting shaft 15 can be moved back and forth by the lifting motor 17 during rotation of an eccentric shaft 20 in the longitudinal direction L, wherein the longitudinal direction L is the main expansion direction of the processing machine 1 or the direction of expansion to be compensated.
  • FIG. 3 shows the bearing arrangement 13 from FIG. 2 in plan view. It can be seen that two connecting shafts 15a, 15b are arranged parallel to each other, wherein the connecting shafts 15a, 15b extend in the longitudinal direction L.
  • a first rolling bearing 19a, 19b is respectively installed for the connecting axes 15a, 15b, which respectively radially surround the connecting shaft 15a, 15b with rolling elements.
  • the second and third bearings 16a, 16b are provided on each of the connecting shafts 15a, 15b, which are screwed firmly to the machine frame 2.
  • the connecting shafts 15a, 15b are driven in common via the lifting motor 17 and set in a reciprocating motion in the longitudinal direction L.
  • FIG. 4 shows another embodiment of a floating bearing arrangement 21 in which a second roller bearing 22 in the form of a linear roller bearing with its outer ring 23 is fixedly mounted on a carrier 7. Slightly offset about the bearing axis of the second rolling bearing 22, a first rolling bearing 24 is installed. The inner ring 25 of the second rolling bearing 22 cooperates with the outer ring 26 of the first Rolling 24 together. The drive shaft 5 is in turn coupled to the inner ring 27 of the first rolling bearing 24.
  • each rolling elements 27 are provided in a known manner.
  • the mutually coupled outer ring 26 of the first roller bearing 24 and inner ring 25 of the second rolling bearing 22 together form a connecting bearing shell for the rolling elements 27 of the first and second rolling bearing 24, 22.
  • the connecting bearing shell is driven and in this case preferably continuously back and forth in the right and left direction and rotated , In this way it is ensured that the rolling elements 27 are constantly moved and permanently lubricated. Loads transverse to the bearing axis are compensated in this way, without the bearing assembly 21 is destroyed at such loads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Rolling Contact Bearings (AREA)
  • Turning (AREA)
  • Machine Tool Units (AREA)
  • Crushing And Grinding (AREA)
  • Sliding-Contact Bearings (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Transmission Devices (AREA)

Claims (15)

  1. Machine-outil (1) comportant un bâti de machine (2) et un élément de traitement (3) monté de façon amovible par rapport au bâti au moyen d'au moins un arbre d'entraînement (4,5), dans laquelle un arbre d'entraînement est accouplé au bâti de machine (2) et à l'élément de traitement (3) au moyen d'un agencement de paliers à roulements (13, 21), caractérisée en ce que l'agencement de paliers à roulements (13, 21) comprend au moins deux roulements (16, 19, 22, 24) accouplés l'un à l'autre, un premier roulement (19, 24) étant accouplé à l'arbre d'entraînement (5) et un second roulement (16, 22) étant disposé sur le bâti dé machine (2) et ayant une coquille de coussinet de liaison commune, cette coquille de coussinet portant les corps de roulement (27) des premier et second roulements (19, 24, 16, 22) accouplés l'un à l'autre et étant entraîné en rotation et/ou en déplacement en va et vient, de telle sorte que les corps de roulement (27) sont maintenus en mouvement.
  2. Machine-outil (1) selon l'une des revendications précédentes constituée par une meuleuse comportant un élément d'appui allongé en tant que moyen de meulage comme élément de traitement (3), caractérisée en ce que l'élément d'appui est porté par le bâti de la machine (2) par au moins deux arbres d'entraînement (4, 5) distants l'un de l'autre dans une direction de la longueur (L) en tant que direction d'extension principale, au moins l'un des arbres d'entraînement (5) étant accouplé au bâti de machine (2) au moyen de l'agencement de palier à roulements (13, 21).
  3. Machine-outil (1) selon la revendication 1 ou 2, caractérisée en ce que l'arbre d'entraînement (5) est monté de façon rotative sur un support (14) et sur l'élément de traitement de surface (3) et le premier roulement (19) est relié au support (14) et le second roulement (16) est relié au bâti de machine (2), les roulements (16, 19) étant conformés en palier linéaire et étant accouplés l'un à l'autre en tant que coquille de coussinet de liaison de façon mobile en va et vient suivant un axe de liaison (15) s'étendant, dans la direction d'extension commune (L) de l'élément de traitement de surface (3) et/ou du bâti de machine (2).
  4. Machine-outil (1) selon la revendication 2, caractérisée en ce que le support (14) est accouplé au bâti de machine (2) par un élément ressort (18) agissant dans la direction d'extension principale (L).
  5. Machine-outil (1) selon l'une des revendications 3 à 4, caractérisée par deux axes de liaison (15a, 15b) s'étendant parallèlement l'un à l'autre dans la direction longitudinale (L) de l'élément d'appui, axes qui sont chacun montés sur le support (14) de façon mobile en va et vient dans la direction longitudinale (L) au moyen de premiers roulements (19a, 19b) et sont montés sur le bâti de machine (2) de chaque côté des premiers roulements (19a, 19b) chacun au moyen d'un roulement linéaire (16a, 16b) pour être mobiles en va et vient dans la direction longitudinale (L).
  6. Machine-outil (1) selon l'une des revendications précédentes, caractérisée en ce qu'au moins un arbre d'entraînement (5) est réalisé sous forme d'arbre à excentrique.
  7. Machine-outil (1) selon l'une des revendications 3 à 6, caractérisée en ce que le support (14) est précontraint sur le bâti de machine (2) dans la direction axiale de l'arbre d'entraînement (5) au moyen d'éléments d'appui.
  8. Machine-outil (1) selon l'une des revendications précédentes, caractérisée en ce qu'au moins un arbre d'entraînement (4,5) est entraîné au moyen d'un entraînement à courroie crantée (7), au moins une courroie crantée (9b) de l'entraînement à courroie crantée (7) étant précontrainte au moyen d'un dispositif de tension (S).
  9. Agencement de palier à roulements (13, 21) comprenant un premier roulement (19, 24) et un second roulement (16, 22) et une coquille de coussinet de liaison commune pour le premier et le second roulement (19, 24, 16, 22) qui porte les corps de roulement (27) du premier et second roulement (19, 24, 16, 22), caractérisé en ce que la coquille de coussinet de liaison commune est entraînée de façon mobile en va et vient ou en rotation au moyen d'un dispositif d'entraînement, de telle sorte que les corps de roulement (27) sont maintenus en mouvement.
  10. Agencement de palier à roulements (21) selon la revendication 9, caractérisé en ce que l'anneau extérieur (26) du premier roulement (24) est entouré par l'anneau intérieur (25) du second roulement (22) et l'anneau extérieur (26) forme avec l'anneau intérieur (25) la coquille de coussinet de liaison.
  11. Agencement de palier à roulements (21) selon la revendication 10, caractérisé en ce que le premier roulement (24) est décalé par rapport à l'axe du second roulement (22).
  12. Agencement de palier à roulements (13) selon la revendication 9, caractérisé en ce que les premiers et second roulements (16, 19) sont conçus sous forme de roulements linéaires et sont accouplés l'un à l'autre au moyen d'un axe de liaison (15) s'étendant dans la direction de l'axe du palier de roulement, cet axe de liaison (15) étant conçu sous forme de coquille de coussinet de liaison entraînée.
  13. Agencement de palier à roulements (13) selon la revendication 12, caractérisé en ce que de chaque côté du premier roulement (19) agencé pour glisser sur l'axe de liaison (15) dans la direction axiale de cet axe de liaison (15) sont prévus un second et un troisième roulement (16a, 16b).
  14. Agencement de palier à roulements (13) selon la revendication 13, caractérisé en ce qu'au moins deux axes de liaison (15a, 15b) sont disposés parallèlement l'un à l'autre, les axes de liaison (15a, 15b) portant chacun un premier, un deuxième et un troisième roulement (16a, 16b, 19).
  15. Procédé de montage d'un arbre entraîné en rotation au moyen d'un agencement de palier à roulements selon l'une des revendications 9 à 14, caractérisé par l'entraînement de la coquille de coussinet de liaison commune du premier et second roulement (19, 24, 16, 22).
EP03021427A 2002-11-29 2003-09-23 Machine à traitement de surface avec disposition de roulements Expired - Lifetime EP1424162B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10256124 2002-11-29
DE10256124A DE10256124B3 (de) 2002-11-29 2002-11-29 Bearbeitungsmaschine und Loslageranordnung hierzu

Publications (2)

Publication Number Publication Date
EP1424162A1 EP1424162A1 (fr) 2004-06-02
EP1424162B1 true EP1424162B1 (fr) 2007-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03021427A Expired - Lifetime EP1424162B1 (fr) 2002-11-29 2003-09-23 Machine à traitement de surface avec disposition de roulements

Country Status (7)

Country Link
US (1) US7381115B2 (fr)
EP (1) EP1424162B1 (fr)
AT (1) ATE372853T1 (fr)
DE (1) DE10256124B3 (fr)
DK (1) DK1424162T3 (fr)
ES (1) ES2289219T3 (fr)
PL (1) PL205030B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110883611B (zh) * 2019-12-06 2020-07-07 浙江临东机械科技有限公司 一种化工压力容器成型后表面精加工工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR515367A (fr) * 1920-05-06 1921-03-31 Le Coke Ind Roulement à billes ou à rouleaux
FR826012A (fr) * 1936-09-04 1938-03-21 Roulements A Billes Miniatures Roulement à billes ou à rouleaux
GB1179327A (en) * 1967-05-18 1970-01-28 Ina Needle Bearings Ltd A Shaft and Bearing Assembly
US3822511A (en) * 1972-03-22 1974-07-09 Tri Ordinate Corp Cam controlled grinding machine
US3947079A (en) * 1974-11-11 1976-03-30 Fag Bearings Corporation Temperature compensated spindle
US4483216A (en) * 1978-02-20 1984-11-20 Mitsubishi Jukogyo K.K. Planetary-roller transmission with elastic roller or ring
US5081794A (en) * 1990-08-17 1992-01-21 Haney Donald E Sander with orbiting platen and abrasive
US5138862A (en) * 1991-08-27 1992-08-18 Ball Corporation Ram guidance system
JP4294228B2 (ja) * 2000-03-27 2009-07-08 ナブテスコ株式会社 ポリッシング装置の回転駆動装置
TW485863U (en) * 2001-08-13 2002-05-01 Hermosa Thin Film Co Ltd Polishing equipment for end face of optical fiber

Also Published As

Publication number Publication date
US20040171335A1 (en) 2004-09-02
US7381115B2 (en) 2008-06-03
DE10256124B3 (de) 2004-07-15
PL205030B1 (pl) 2010-03-31
DK1424162T3 (da) 2007-10-22
PL363584A1 (en) 2004-05-31
ES2289219T3 (es) 2008-02-01
ATE372853T1 (de) 2007-09-15
EP1424162A1 (fr) 2004-06-02

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