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EP3170621A1 - Dispositif d'usinage rotatif de surfaces - Google Patents

Dispositif d'usinage rotatif de surfaces Download PDF

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Publication number
EP3170621A1
EP3170621A1 EP16197120.5A EP16197120A EP3170621A1 EP 3170621 A1 EP3170621 A1 EP 3170621A1 EP 16197120 A EP16197120 A EP 16197120A EP 3170621 A1 EP3170621 A1 EP 3170621A1
Authority
EP
European Patent Office
Prior art keywords
grinding
drive
drive belt
wheel shafts
belt
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Withdrawn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
EP16197120.5A
Other languages
German (de)
English (en)
Inventor
Andreas Komander
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.)
Janser GmbH
Original Assignee
Janser 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 Janser GmbH filed Critical Janser GmbH
Publication of EP3170621A1 publication Critical patent/EP3170621A1/fr
Withdrawn legal-status Critical Current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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
    • 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
    • B24B41/047—Grinding heads for working on plane surfaces

Definitions

  • the invention relates to a device for the rotary machining of surfaces, in particular for grinding or polishing of floors.
  • the DE 196 49 282 C1 describes a device for grinding and polishing floors and surfaces with motor-driven grinding wheels.
  • the device comprises a handle element, a chassis with wheels, a housing with a motor drive and a plate with several grinding wheels.
  • the plate is connected via a gearbox in operative connection with a motor shaft.
  • the axes of the grinding wheels are mounted radially displaceable and are pressed by springs inwards.
  • gears are rotatably arranged on the inside.
  • the housing On the inside, the housing has a gear rim corresponding to the gears.
  • the object of the invention is to provide a device of the type mentioned above, which avoids the disadvantages of the prior art and in particular has the improved properties with respect to a fatigue-free application by reducing the rotating masses and using vibration-resistant drive means.
  • the device has an operating unit, a chassis, a drive unit with drive motor and drive shaft and a grinding unit.
  • the grinding unit has a rotating sanding pad which can be driven by the drive shaft.
  • At one of the surface to be machined surface facing the grinding plate at least three rotatably mounted grinding wheels are arranged with grinding wheel shafts, which are driven by a rotating drive belt.
  • the drive belt is guided over a fixed central disk arranged between the grinding wheel shafts and abuts against it at at least one point.
  • the drive belt clamps a polygon about the grinding wheel shafts, which comprises all grinding wheel shafts in equal parts.
  • the grinding wheel shafts form the corners of the polygon or span the polygon.
  • all grinding wheels rotate in the same direction, in particular in opposite directions to the grinding plate. Since the sanding pad is rotated by the drive motor, the grinding wheel shafts arranged on it are taken in the same direction.
  • the rotating grinding wheel shafts orbit the fixed central disk.
  • the drive belt spans the central disk and the grinding wheel shafts.
  • the grinding wheel shafts partially lift the drive belt from the central disk when the center disk is surrounded.
  • the drive belt does not rotate relative to the central disk, so the sense of rotation of the grinding wheels is reversed when the drive belt rolls off.
  • this results in that the direction of rotation reversal is brought about without a further rotating element, which reduces mass forces acting in the device.
  • a force transmission between the central disk, the drive belt and the grinding wheel shafts is produced in a positive and / or non-positive or frictionally engaged manner.
  • the drive belt can be designed as a form-fitting toothed belt or as a non-positive flat, round or V-belt, ie drive by means of frictional engagement.
  • Drive belts reduce vibrations, require little maintenance and require no lubrication. Compared to chains or gearboxes, they have a much lower weight. Drive belts run quietly and act as positive or frictionally engaged overload protection. In addition, belt drives are cheaper than chain or gear transmission.
  • the drive belt is a flat belt or V-belt, which bears against the central disk.
  • An embodiment of the drive belt as a flat belt acts as overload protection. Unevenness of the ground, which could result in blocking of the grinding wheel, is compensated by slippage of the flat belt and does not adversely affect the device. In addition, a low wrap angle and thus a reduced size is possible with a use of non-positive drive belt.
  • the drive belt is a toothed belt whose teeth engage in a toothing of the central disc.
  • Timing belts have a good synchronization, are slip-free and usually require a lower belt tension than non-positive belt drives such as flat belts. This results in lower bearing loads and increased life of bearings.
  • the drive shaft is positively connected to the sanding pad, preferably by means of a plate closure, in particular by means of a bayonet closure.
  • the drive shaft can be positively connected to the sanding pad.
  • the drive shaft and the sanding pad can be connected to one another by a wedge connection, a single or multi-start thread or advantageously by a bayonet lock.
  • positive connections via splined or splined shafts are possible, as well as a connection with a groove and a feather key.
  • a positive connection between the drive shaft and the sanding pad acts in a direction of rotation of the drive shaft.
  • the positive connection is designed such that the direction of rotation of the drive motor is at the same time a locking direction of the positive connection or the connection between the drive shaft and the sanding pad.
  • the correctly mounted connection can not be released automatically during operation of the device.
  • Such a connection can be realized for example with a single or multi-start thread, a wedge connection or a bayonet lock.
  • a positive connection in the axial direction of the drive shaft act.
  • the central disc engages over a flange of the sanding plate.
  • An outer diameter of the rotating flange of the grinding disc is smaller than an inner diameter of the fixed central disc.
  • the central disk is attached to a cover of the drive motor.
  • the central disk can be attached directly to the cover of the drive motor.
  • existing threads can be used for the connection already in the cover, which serve to connect two cover parts.
  • the central disk over at least one straight polygonal side by 1 mm to 10 mm, advantageously such that the drive belt with force or pressure is applied to the central disk when it is inserted therein.
  • the central disk may be geometrically designed such that it protrudes beyond at least one rectilinear polygonal side beyond it in its state without inserted central disk and thus causes an increased belt tension and thus an improved power transmission.
  • the central disk can advantageously be designed circular, alternatively deviate from a circular shape.
  • the central disk over all rectilinear polygonal sides equally over in such a way that the drive belt rests at several points with force or pressure on the central disk.
  • the central disk can be designed such that in each case such a number of sections of the drive belt rests against it at the same time or engages in it as the polygon has corners.
  • the drive belt and the central disk is associated with a pressing device.
  • the pressing device can exert additional pressure on the drive belt, advantageously in the direction of the grinding wheel shafts and / or the central disk, so that a slipping or slipping of the drive belt can be better or completely prevented with insufficient drive belt tension.
  • the pressing device can be used both with toothed belts and with flat belts.
  • the pressing device has pressure rollers which act on the drive belt in the pressure position. During operation of the device, the pressure rollers of the stationary pressure device can thus roll over the rotating drive belt and exert pressure on it.
  • the pressing device can be latched in at least one pressing position.
  • the pressing device rotatably mounted about a rotation axis of the grinding plate can be rotated such that the pressure rollers approximate the grinding wheel shafts in a rotational direction of the pressing device , preferably all pressure rollers evenly.
  • the pressing device can be locked, for example by means of locking bolts, which can advantageously be done automatically or automatically.
  • a screw or any other type of attachment in the Andrückposition is possible.
  • Fig. 1 shows a device 1 for rotating machining of surfaces, in particular parquet.
  • the device 1 has an operating unit 2, a chassis 3, a drive unit 4 and a grinding unit 5.
  • the operating unit 2 has a handle area and an extension for connection to the chassis 3. Rollers for moving the device 1 are arranged on the chassis 3.
  • the grinding unit 5 is further attached.
  • the grinding unit 5 is partially covered by a housing cover 6.
  • a suction device 7 On one of the surface to be machined facing the housing cover 6, a suction device 7 is arranged, which protrudes from the housing cover to the outside and represents a kind of flexible ring as a kind of apron, which ultimately rests on the ground. Sanding dust can be extracted by means of a connected vacuum cleaner. This corresponds to the state of the art.
  • the Fig. 2 . 3 and 4 show details of the grinding unit 5.
  • the grinding unit 5 has in its the surface to be machined facing area, which thus points downward, a sanding pad 50.
  • On the sanding pad 50 here three grinding wheels 51, 52, 53 of the surface to be machined facing down.
  • the grinding wheels 51, 52, 53 have on a side facing away from the surface to be machined grinding wheel shafts 56, 57, 58, with which they are rotatably mounted on the sanding pad 50.
  • a plate lock 55 is centrally arranged, which is surrounded by a flange of the grinding plate 50, hereinafter called plate flange 54.
  • a drive belt 61 is wound, which spans or forms such a triangle.
  • the drive belt 61 is without additional tension through a central disk 60 as a solid line in Fig. 2 shown.
  • the drive pulley 61 stretched around the center disk 60 which is shown in dotted lines, is shown dotted.
  • the central disk 60 is fixed to a cover flange 62, which is not connected to the cover of the Fig. 2 shown drive 4 is connected.
  • the centrally arranged plate lock 55 engages as a bayonet closure, not shown closure element on a drive shaft of the drive unit 4, which corresponds to the shape of the bayonet closure.
  • a pressing device 63 with three pressure rollers 64, 65, 66 is shown.
  • the pressure rollers 64, 65, 66 halve in a rest position in each case the angle between two grinding wheel shafts 56, 57, 58 and are arranged outside the polyhedra spanned by the drive belt 61.
  • the pressure rollers 64, 65, 66 are arranged on arms, which converge centrally in a circular disk, not shown.
  • the annular disk is rotatably mounted on an underside of the grinding plate 50.
  • the drive shaft of the drive unit 4 rotates, its closure element also rotates and the plate closure 55 is carried along by the closure element. Correspondingly also rotates the sanding pad 50 in the direction of rotation of the drive shaft.
  • the grinding wheels 51, 52, 53 are carried by the sanding pad 50 in the direction of rotation of the drive shaft.
  • the attached to the fixed cover flange 62 central disk 60 does not rotate.
  • the drive belt 61 which is placed around the grinding wheel shafts 56, 57, 58 rotating with the sanding pad 50 and around the fixed central disk 60, is revolving around the sanding disk shafts 56, 57, 58 from the central disk 60 when the sanding disk 50 rotates but still on.
  • a first axis of rotation A in the center of the grinding plate 50 is arranged.
  • the sanding pad 50 rotates driven by the drive shaft about this axis and the grinding wheels 51, 52, 53 revolve around the rotation axis A.
  • each grinding wheel 51, 52, 53 rotates about its own axis of rotation B, C, D against the direction of rotation of the sanding pad 50, the rotating objects B, C, D pass through the grinding wheel shafts 56, 57, 58.
  • a locking of the pressing device 63 is released by an operator by hand.
  • the pressing device 63 is rotated by the operator about the axis of rotation A in a rest position in which the pressure rollers are each approximately between two grinding wheel shafts 56, 57, 58.
  • the sanding pad 50 is rotated by the operator in the direction of rotation of the drive 4 about the axis of rotation A, preferably by hand.
  • a rotation angle to a release of the connection between the sanding pad 50 and drive 4 is about 60 °.
  • Three lugs of the locking element, not shown, of the drive shaft of the drive 4 can now be removed by recesses from a groove of the plate closure 55.
  • the sanding pad 50 is attached to the device 1 in such a way that the lugs of the locking element of the drive 4 dive into the recesses of the disk lock 55.
  • the connection is positively secured.
  • the pressing device 63 is rotated by the operator about the rotation axis A such that the pressure rollers 64, 65, 66 approximate the grinding wheels 56, 57, 58 in the direction of rotation and pressure is generated by the pressure rollers 64, 65, 66 on the drive belt 61. In this pressing position, the pressing device 63 is locked and thus the device 1 is ready for operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP16197120.5A 2015-11-23 2016-11-03 Dispositif d'usinage rotatif de surfaces Withdrawn EP3170621A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015008018.9U DE202015008018U1 (de) 2015-11-23 2015-11-23 Vorrichtung zur rotierenden Bearbeitung von Flächen

Publications (1)

Publication Number Publication Date
EP3170621A1 true EP3170621A1 (fr) 2017-05-24

Family

ID=55022141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16197120.5A Withdrawn EP3170621A1 (fr) 2015-11-23 2016-11-03 Dispositif d'usinage rotatif de surfaces

Country Status (2)

Country Link
EP (1) EP3170621A1 (fr)
DE (1) DE202015008018U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117817464B (zh) * 2024-03-05 2024-05-28 中泓顺源建设科技集团有限公司 一种建筑墙面平整打磨装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649282C1 (de) 1996-11-28 1998-06-10 Witte Metallwaren Gmbh Vorrichtung zum Schleifen oder Polieren von Böden oder Flächen
EP1806206A1 (fr) * 2006-01-10 2007-07-11 Air-tec AG Ponceuse de sol
EP1813383A1 (fr) * 2006-01-31 2007-08-01 B A Werk Industries Ltd. Appareil d'abrasion de surface
DE202006014965U1 (de) * 2006-09-27 2008-02-14 Seelbach International Gmbh Bodenschleifmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649282C1 (de) 1996-11-28 1998-06-10 Witte Metallwaren Gmbh Vorrichtung zum Schleifen oder Polieren von Böden oder Flächen
EP1806206A1 (fr) * 2006-01-10 2007-07-11 Air-tec AG Ponceuse de sol
EP1813383A1 (fr) * 2006-01-31 2007-08-01 B A Werk Industries Ltd. Appareil d'abrasion de surface
DE202006014965U1 (de) * 2006-09-27 2008-02-14 Seelbach International Gmbh Bodenschleifmaschine

Also Published As

Publication number Publication date
DE202015008018U1 (de) 2015-12-16

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