EP1990133A2 - Agrégat de ponçage comme outil pour un dispositif de traitement - Google Patents

Agrégat de ponçage comme outil pour un dispositif de traitement Download PDF

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Publication number
EP1990133A2
EP1990133A2 EP08008728A EP08008728A EP1990133A2 EP 1990133 A2 EP1990133 A2 EP 1990133A2 EP 08008728 A EP08008728 A EP 08008728A EP 08008728 A EP08008728 A EP 08008728A EP 1990133 A2 EP1990133 A2 EP 1990133A2
Authority
EP
European Patent Office
Prior art keywords
unit according
guide rollers
grinding
belt
sanding unit
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
EP08008728A
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German (de)
English (en)
Other versions
EP1990133B1 (fr
EP1990133A3 (fr
Inventor
Jürgen Heesemann
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.)
Individual
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Individual
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Publication date
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Publication of EP1990133A2 publication Critical patent/EP1990133A2/fr
Publication of EP1990133A3 publication Critical patent/EP1990133A3/fr
Application granted granted Critical
Publication of EP1990133B1 publication Critical patent/EP1990133B1/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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/002—Machines or devices using grinding or polishing belts; Accessories therefor for grinding edges or bevels
    • 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
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08—Pressure shoes; Pressure members, e.g. backing belts
    • 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
    • B24B21/18—Accessories
    • B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt

Definitions

  • the invention relates to a grinding unit as a tool for a machining device, with a connecting means for a work spindle of the machining device and a rotation by a connection of a support member of the grinding unit with a non-rotating with the drive spindle part of the processing device.
  • edge grinding machines which are designed for high-quality woodworking.
  • workpieces made of other materials, such as plastic and metal can be machined by grinding.
  • edge grinding machines makes sense for mass production.
  • grinding units as tools for a processing device, for example in the form of a machining center or a machining robot train. Accordingly, a usually height-adjustable spindle drive of the processing device is available for the grinding unit, with which the grinding unit is connectable so that the rotational movement is transferable to a drive shaft, wherein a support member of the grinding unit against the rotation of the work spindle is rotatably connected to the machining center.
  • This grinding wheels are used, the working surface consists in the cylindrical surface. As far as an edge profiling is to be effected, the grinding wheels may have a corresponding negative contour of the desired profile of the edge of the workpiece. There are also known corresponding grinding wheels, which are supplemented by glued on the cylindrical surface grinding blocks, so that, for example, seven rotating grinding blocks cause edge processing and are interchangeable for a modified edge profile.
  • the invention is therefore based on the object, a grinding unit as a tool for a processing device in such a way that even grinding tasks higher quality can be done.
  • a grinding unit according to the invention of the type mentioned is characterized in that arranged on the support part at least three guide rollers for guiding an endlessly circulating abrasive belt, that a connectable via the connecting means with the work spindle drive unit between the guide rollers and with at least one of Guide rollers is rotatably connected, that at least one pressure shoe between two guide rollers for exerting a pressure perpendicular to the plane of the abrasive belt is arranged and that at least one of the guide rollers is mounted adjustably to create a constant belt tension.
  • the grinding unit according to the invention has at least three guide rollers, preferably four guide rollers, with which thus a two-dimensional surface is defined, which is bounded by the endless rotating abrasive belt.
  • the drive unit is disposed between the guide rollers, preferably in the center of the limited by the abrasive belt surface.
  • the guide rollers are preferably arranged at an equal radial distance from the center of the surface and thus form an equilateral polygon.
  • the grinding unit according to the invention thus uses a grinding belt whose length is large by its clamping over a two-dimensional surface relative to the required area and therefore has a relatively long service life.
  • the abrasive belt is occupied in the usual way with an abrasive grain whose grains are evenly distributed on the surface of the abrasive belt and whose grain size and optionally material of the grinding task is adjusted.
  • a pressure shoe between two guide rollers which exerts a pressure perpendicular to the plane of the grinding belt and thus deflects the grinding belt from the straight connection between the peripheral surfaces of the adjacent guide rollers something.
  • at least one of the guide rollers for adjusting a constant belt tension is adjustably mounted.
  • the grinding unit according to the invention thus enables the setting of the grinding parameters as in a high-quality stationary grinding machine. Only the available sanding belt length can be selected smaller than in a conventional edge sanding machine in order to achieve a well-handled sanding unit. The reduced service life due to the smaller strip length takes into account the fact that such a replaceable grinding unit is regularly required for shorter operating times.
  • the pressure of the pressure shoe to the sanding belt can be controlled electrically or pneumatically, with the electrical supply of tools through the machining center is provided more frequently.
  • the grinding unit is self-sufficient, thus requires no power supply.
  • the pressure shoe is preferably arranged resiliently against the grinding belt pressing. This arrangement allows several application variants. Is a long-stroke spring provided for the pressure of the pressure shoe, the delivery of the workpiece, which leads to a depression of the pressure shoe against the restoring force of its pressure spring, the effective spring force practically does not change. In this way, a constant grinding force can thus also be realized for different deflections of the grinding belt by the delivered workpiece.
  • the autarkic design of the grinding unit also contributes, if the adjusting the belt tension adjustable guide roller is resiliently arranged against the grinding belt pressing.
  • the spring is preferably designed so that an always constant belt tension is obtained.
  • four guide rollers are provided, which are preferably arranged in a rectangle, in particular in a square, in a plane, so that the grinding belt limits the corresponding rectangular or square area.
  • the grinding unit has at least one second pressure shoe which is arranged between two guide rollers, of which at least one is not identical with the guide rollers, between which the first pressure shoe is arranged.
  • the arrangement of the pressure shoes at an angle of 90 °.
  • Particularly expedient is the arrangement of two pressure shoes when they have different profiles and when complement the profiles of the pressure shoes to a desired profile. For a straight edge, its transition to the horizontal Surface is rounded, for example, a pressure shoe, the straight edge and the bottom rounding grind, while the other pressure shoe, the straight edge and the upper curve grinding.
  • the support member of the grinding unit is preferably rotatably disposed about the axis of the work spindle, even if the connection to the work spindle is already established.
  • the processing device is formed with a rotatable hollow tube surrounding the work spindle, which is generally called C-axis, the carrier part can be rotated by the processing device such that the second pressure shoe that may be present can be brought to the previous position of the first pressure shoe, so that the workpiece can remain in the position oriented relative to the grinding unit and is now subjected to a supplementary grinding operation by means of the second pressure shoe.
  • the operation of the C-axis in conjunction with a corresponding XY displacement of the work spindle by the processing device, a predetermined trajectory corresponding to the course of the edge of the workpiece, and thus also a non-straight edge of a Grind workpiece.
  • the Schleibearbeitung of the workpiece can be further improved by the support member is pivotally mounted relative to the axis of the work spindle and that transmitted to the connecting means rotational movement of the work spindle via a pivotable gearbox to a work spindle of the drive unit is transferable.
  • the transmission of the rotational movement to a standing by the pivoting movement at an angle to the work spindle axis can be done by any suitable homokinetic gear, but also with a flexible shaft or via a suitable bevel gear with larger swivel angles.
  • the support member may preferably be provided with a controllable pivot drive, so as to allow different feed angles to the edge.
  • the carrier part can be fixed in its pivoted position, in particular by a clamping device.
  • the support member is preferably a support platform on which the guide rollers and the drive unit are mounted.
  • the transmission of the rotary motion transmitted to the drive unit to at least one guide roller preferably takes place with a flexible means, for example in the form of a chain or a drive belt.
  • the possible slip in a non-profiled drive belt slip be prevented by using a toothed belt as a drive belt.
  • FIG. 1 shows in section a work spindle 1 of a machining center forming a machining center.
  • the work spindle 1 is formed at the lower free end for receiving a connecting means 2 in the form of a conical adapter.
  • the connecting means 2 ensures a rotationally fixed connection between the work spindle 1 and a drive shaft 3 of a drive unit 4 in the form of a belt pulley and a drive belt 5.
  • the work spindle 1 is surrounded by a hollow cylindrical shaft 6 which is rotatable independently of the work spindle 1.
  • the grinding unit used in the machining center with the connecting means 2 has a support part 7 in the form of a support platform, which is connected via a cylindrical pivot bearing 8 with the hollow cylindrical axis 6, which is commonly referred to as "C axis".
  • the support part 7 has a dowel pin 9, which is inserted into a corresponding blind bore 10 in the axis 6 and thus causes the rotationally fixed connection between the axis 6 and carrier part 7.
  • a chassis plate 11 is fixed, which extends parallel to the support platform and are rotatably mounted on the four guide rollers 12, 13, 14, 15 for a revolving, endless abrasive belt 16.
  • One of the guide rollers 12 is driven via the drive belt 5 and an associated, driven by the drive belt 5 pulley 17 and provides for the circulation of the grinding belt sixteenth
  • the sanding belt 16 is deflected at two places by two pressure shoes 18, 18 'from the straight line between two adjacent guide rollers 14, 15 and 12, 15, respectively, because the pressure shoes 18, 18' have the sanding belt 16 with a resilient bias relative to its circulating track Press P outward.
  • FIG. 2 on the grinding unit illustrates the appropriate structure. Schematically, it is indicated that in addition to the driven guide roller 12 and the guide roller 15 with a further drive belt 5 ' can be driven. Both rollers are mounted with fixed axes of rotation. By contrast, one of the guide rollers, the guide roller 13, not stationary, but slidably mounted radially outwardly in a telescopic frame 19, as indicated by the double arrow in FIG. 2 is clarified.
  • a compression spring 20, 20' is provided for the elastic pressure of the pressure shoes 18, 18 '.
  • the pressure of the guide roller 13 to the outside is also determined by a compression spring 21, the spring constant determines the belt tension for the rotating belt 16.
  • the deflection of the pressure shoe 18, 18 ', and thus the compression of the compression spring 20 can be changed.
  • the grinding force mediated by the pressure shoe 18, 18 ' remains substantially constant.
  • the grinding force changes, so that the contact pressure can be varied via the feed of the workpiece to the pressure shoe 18, 18 '.
  • FIG. 3 schematically shows a possibility of use of the two pressure shoes 18, 18 ', which over the (in FIG. 3 not shown) abrasive belt 16 act on a workpiece 22.
  • the formed for an L-shaped, rounded profile shape 23 pressure shoe 18 provides a round cut of a vertical edge 24 with a rounded transition 25 in a horizontal surface 26 of the workpiece.
  • the support member 7 is rotated with the hollow cylindrical axis 6 (C-axis) by 90 °, so now the pressure shoe 18 'reaches the previous position of the pressure shoe 18.
  • the pressure shoe 18 ' has a mirror-symmetrical profile shape 27, with which a vertical edge portion 28, and an adjoining rounded transition 29 to a horizontal underside 30 of the workpiece 22 is ground.
  • FIGS. 4 to 6 a further embodiment of a grinding unit according to the invention is shown, in which the support member 7 is connected via a hinge 31 with a mounting plate 32 which is fixed by means of the dowel pin 9 rotatably on the (not shown here) axis 6.
  • the pivot 31 is housed in a housing 33 which is supplemented by a bellows 34 which extends to the support member 7.
  • the guide rollers 12 to 15 On the support part 7, the guide rollers 12 to 15 in completely the same way as in the embodiment according to FIG. 1 attached.
  • an angle scale 35 is provided on which the angular adjustment of the pivoted support member 7 is read in which an angle rigidly connected to the support member 7 bolt through a circular arc slot 36 and there clamped by means of a knurled nut 37 as a clamping device in the desired angular position is.
  • the support member 7 may be provided on one side with a guide rod 38, at the end of a bolt member 39 is attached.
  • FIG. 5 illustrates that in this way an external adjustment of the pivot angle of the support member 7 is adjustable by the bolt member 39 protrudes into a laterally open, U-shaped receptacle 40 which is height adjustable on a guide carriage 41 and a guide rod 42.
  • the tilting of the support member 7 can be set directly, such as FIG. 5 illustrated by the dashed representation.
  • the machining center can also be provided with a removal device for different pressure shoes 18 from a pressure shoe magazine 43. This can be taken for the respective grinding task suitable pressure shoes and used in the grinding unit.
  • the pressure shoes 18 may have different surfaces, different material hardnesses and in particular different profile shapes.
  • FIG. 6 illustrates that for the defined inclination of the support member 7 is not necessarily a displacement of the U-shaped receptacle 40 is required, but in an analogous manner by an axial displacement of (in FIG. 6 not shown) work spindle can be done.
  • the pivoting of the support member 7 now engages the sanding belt 16 under the in FIG. 6 drawn angle ⁇ at a vertical edge of the workpiece 22 at.
  • FIGS. 4 to 6 shown pivoting thus allows an all-round attack of the grinding belt 16 on a workpiece 22, even if the machining center is not equipped with a five-axis machining head, but for example, only has a three-axis machining head with a C-axis 6.
  • FIG. 7 shows the possibility of using a grinding unit according to the invention in the connection with a three-axis machining head with a hollow cylindrical axis 6 (C-axis).
  • the abrasive belt can only grind vertical surfaces.
  • the rotation by means of the C-axis 6 can be ground by 90 ° to each other standing edges, since the grinding unit with the pressure shoe 18 is rotatable in a corresponding manner by 90 °.
  • FIG. 8 Is according to FIG. 8 an inventive grinding head used, the analog FIG. 4 has an additional pivot axis, an oblique hiring the grinding belt 16 is made possible to the edges of a workpiece 22.
  • the movement of the grinding head is predetermined by the three axes of movement of the processing device.
  • FIG. 9 illustrates the use of a grinding unit according to the invention with a five-axis machining head. In this case, no C-axis is required because the corresponding rotational movement can take place on the head itself. All possible Anstellierien are performed by the spindle head itself.
  • the grinding unit according to the invention is used with a five-axis machining head, which is additionally provided with a C-axis 6. hereby a full range of motion as a six-axis grinding center in all grinding directions on a 3D workpiece 22 'possible.
  • the grinding belt 16 can not only be aligned obliquely to the workpiece, but can also be attached to the surface of the workpiece 22 'with defined grinding directions. Of course, it is also possible in this case that an additional pivot axis is provided on the grinding unit itself.
  • the grinding unit according to the invention in conjunction with conventional processing devices, in particular machining centers, makes it possible to perform high-quality grinding tasks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP20080008728 2007-05-11 2008-05-09 Agrégat de ponçage comme outil pour un dispositif de traitement Active EP1990133B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710022581 DE102007022581A1 (de) 2007-05-11 2007-05-11 Schleifaggregat als Werkzeug für eine Bearbeitungsvorrichtung

Publications (3)

Publication Number Publication Date
EP1990133A2 true EP1990133A2 (fr) 2008-11-12
EP1990133A3 EP1990133A3 (fr) 2009-12-09
EP1990133B1 EP1990133B1 (fr) 2013-04-24

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EP20080008728 Active EP1990133B1 (fr) 2007-05-11 2008-05-09 Agrégat de ponçage comme outil pour un dispositif de traitement

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EP (1) EP1990133B1 (fr)
DE (1) DE102007022581A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989615A1 (fr) * 2012-04-23 2013-10-25 Quadra 1 Ensemble pour usiner au moins un bloc de beton a coller et poste de rectification comprenant un tel ensemble
KR20140067886A (ko) * 2012-11-27 2014-06-05 니혼 미크로 코팅 가부시끼 가이샤 판유리 등 워크의 주연부를 연마 테이프에 의해 연마하는 연마 장치 및 연마 방법
EP2764954A1 (fr) * 2013-02-06 2014-08-13 JOT Automation Oy Outil d'usinage
CN105033821A (zh) * 2015-08-14 2015-11-11 广州数控设备有限公司 位置和压力补偿装置、方法及使用该装置的打磨机
CN105904325A (zh) * 2016-06-02 2016-08-31 新乡亿威数控设备有限公司 数控滚子外径及球基面复合磨床
CN106271984A (zh) * 2016-08-30 2017-01-04 嘉友联精密机械工程(无锡)有限公司 一种边框打磨装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5551395B2 (ja) * 2009-08-28 2014-07-16 マニー株式会社 カニューレ及びその製造方法
CN111958419B (zh) * 2020-08-28 2021-08-17 安徽同济水电建安有限公司 一种基于建筑加工石材的自动倒角翻面设备
IT202000032198A1 (it) * 2020-12-23 2022-06-23 Admina S R L Levigatrice a nastro manuale

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711278A1 (de) * 1987-04-03 1988-10-13 Daimler Benz Ag Bandschleifeinrichtung zum verputzen von schweissraupen an blechbauteilen, insbesondere an fahrzeugkarosserien
DE4311534A1 (de) * 1993-04-07 1994-10-13 Reichenbacher Gmbh Bandschleifaggregat
DE4333734A1 (de) * 1993-10-05 1995-04-06 Frank Dr Ing Hentschel Vorrichtung zum konturbündigen Abschleifen von Überhöhungen oder Ausschleifen von Defekten in Form kantenfreier Schleifgeometrien
DE19821982C2 (de) * 1998-05-18 2000-04-13 Heesemann Karl Masch Profil-Bandschleifmaschine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989615A1 (fr) * 2012-04-23 2013-10-25 Quadra 1 Ensemble pour usiner au moins un bloc de beton a coller et poste de rectification comprenant un tel ensemble
EP2656969A1 (fr) * 2012-04-23 2013-10-30 Quadra 1 Ensemble pour usiner au moins un bloc de béton à coller et poste de rectification comprenant un tel ensemble
KR20140067886A (ko) * 2012-11-27 2014-06-05 니혼 미크로 코팅 가부시끼 가이샤 판유리 등 워크의 주연부를 연마 테이프에 의해 연마하는 연마 장치 및 연마 방법
JP2014104526A (ja) * 2012-11-27 2014-06-09 Mipox Corp 板ガラス等ワークの周縁部を研磨テープにより研磨する研磨装置及び研磨方法
EP2764954A1 (fr) * 2013-02-06 2014-08-13 JOT Automation Oy Outil d'usinage
US9156120B2 (en) 2013-02-06 2015-10-13 Jot Automation Oy Machining tool
CN105033821A (zh) * 2015-08-14 2015-11-11 广州数控设备有限公司 位置和压力补偿装置、方法及使用该装置的打磨机
CN105904325A (zh) * 2016-06-02 2016-08-31 新乡亿威数控设备有限公司 数控滚子外径及球基面复合磨床
CN105904325B (zh) * 2016-06-02 2017-10-17 新乡亿威数控设备有限公司 数控滚子外径及球基面复合磨床
CN106271984A (zh) * 2016-08-30 2017-01-04 嘉友联精密机械工程(无锡)有限公司 一种边框打磨装置

Also Published As

Publication number Publication date
EP1990133B1 (fr) 2013-04-24
EP1990133A3 (fr) 2009-12-09
DE102007022581A1 (de) 2008-11-20

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