EP0155380A1 - Ponceuse à bande - Google Patents

Ponceuse à bande Download PDF

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Publication number
EP0155380A1
EP0155380A1 EP84115225A EP84115225A EP0155380A1 EP 0155380 A1 EP0155380 A1 EP 0155380A1 EP 84115225 A EP84115225 A EP 84115225A EP 84115225 A EP84115225 A EP 84115225A EP 0155380 A1 EP0155380 A1 EP 0155380A1
Authority
EP
European Patent Office
Prior art keywords
pressure
workpiece
belt
control current
grinding machine
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
EP84115225A
Other languages
German (de)
English (en)
Other versions
EP0155380B1 (fr
Inventor
Jürgen Dipl.-Ing. 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.)
Karl Heesemann Maschinenfabrik GmbH and Co KG
Original Assignee
Karl Heesemann Maschinenfabrik GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6225600&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0155380(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Karl Heesemann Maschinenfabrik GmbH and Co KG filed Critical Karl Heesemann Maschinenfabrik GmbH and Co KG
Priority to AT84115225T priority Critical patent/ATE30690T1/de
Publication of EP0155380A1 publication Critical patent/EP0155380A1/fr
Application granted granted Critical
Publication of EP0155380B1 publication Critical patent/EP0155380B1/fr
Expired 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
    • B24B21/06—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

Definitions

  • the invention relates to a belt grinder with a plurality of pressure shoes arranged next to one another, oriented transversely to the conveying direction of a workpiece, the pressure force of which can be controlled and via which an abrasive belt for processing the surface of the workpiece is guided.
  • Such belt slitting machines have been known for a long time. They can also be used to work on surfaces of complexly shaped workpieces if the pressure shoes can be moved individually from an inactive position to an active position. As a result, the grinding belt is only pressed onto the workpiece in the area required by the workpiece.
  • Such a broadband grinding machine is known from German utility model 82 23 923.1.
  • Each pressure shoe is assigned a switch in the infeed area of the broadband sander, which is actuated when the workpiece moves over this point in the infeed area.
  • the pressure bar receives the information that the pressure shoe belonging to this point must be brought into its active position.
  • a switch-on voltage is supplied to an electromagnet connected to the pressure bar, so that the Pressure shoe (delayed compared to the switch) is brought into its pressure position.
  • the top of the electromagnet is supported on a pressure hose, which in turn is supported on its top in a stationary manner.
  • the pressure force of the pressure beam can be regulated by regulating the pneumatic pressure in the pressure hose. This hose runs across the entire width of the pressure beam, so it acts evenly on all pressure shoes.
  • the present invention is based on the finding that the known differentiated control of the pressure bar is still in need of improvement.
  • the width of the pressure shoes and the printing tape guided over it cannot be reduced arbitrarily. It therefore happens that workpieces protrude into the area of a pressure shoe, but only with an area that is smaller than the width of the pressure shoe in question. If the area is significantly smaller, the pressure shoe exerts a pressure force on an area that is significantly smaller than its width, which is the same as the pressure forces of the pressure shoes that press against the workpiece over the entire area. It therefore happens that edge areas of workpieces are unintentionally ground round by the sanding belt machine.
  • the invention is based on the object of creating a belt grinding machine of the type mentioned at the outset with which improved control of the grinding pressure on the surface of the workpiece can be achieved.
  • This object is achieved in that the pressure force of each pressure shoe can be controlled individually.
  • the pressure forces of each pressure shoe can be regulated individually. This makes it possible, if necessary, to set the pressing force to be smaller in the relevant edge areas than in the central areas of the workpiece. Through this round grinding of the edge areas can be effectively avoided. Similarly, it is by the inventive belt sander possible to take account of special circumstances of the workpiece during grinding bill, for example, protruding edge band by increased S chleiftik flatten.
  • the pressure shoes are preferably controlled with electromagnets which have a proportional control current / lifting force characteristic.
  • electromagnets which have a proportional control current / lifting force characteristic.
  • these electromagnets are used simultaneously to move the pressure shoes into an ineffective position.
  • each pressure shoe is assigned a plurality of detectors arranged next to one another transversely to the conveying direction, positioned in front of the pressure shoe and aligned with it, the output signals of which determine the control current for the electromagnet of the associated pressure shoe.
  • the pressure force can be controlled by the detectors. If, for example, three detectors are assigned to each pressure shoe and only one detector responds, this means that the workpiece is aligned with the pressure shoe only to a third of its width. This is recognized by the detectors, so that the pressure force for the pressure shoe is set, for example, to a third of the force that the pressure shoe requires for full-surface pressure.
  • the detectors preferably scan the workpiece without contact, for example by means of laser light barriers, etc.
  • the feed speed of the workpiece is measured continuously and, depending on the feed speed, the one determined by the detectors for the workpiece Pressure force is controlled.
  • the feed belt can be provided with a pulse generator, so that the feed of the workpiece from the detectors to the pressure shoe corresponds to a predetermined number of pulses. In this case, the time delay between the detector signal and the onset of the corresponding control system results only from the counting of the corresponding pulses.
  • the invention also makes it possible to take into account a variation in the thickness of the workpieces during the grinding process.
  • thickness measuring devices for the workpiece are assigned to the pressure shoes to determine the control current.
  • the definition of the control current as a function of the workpiece thickness ensures the same pressure force for workpieces of different strengths. It has been shown that when the pressure shoe is controlled with a constant pressure force for differently strong workpieces, different resulting grinding forces are generated because the grinding belt opposes the force of the pressure shoe due to the different deflection by the pressure shoe, a different counterforce.
  • the invention therefore makes it possible to automatically detect the workpiece thickness and thus to generate a constant contact pressure of the grinding belt on the workpiece even for different thicknesses of the workpiece.
  • a thickness measuring device has a scanning roller pressing on the surface of the workpiece. This can, for example, be pivoted with a lever at a fixed point, the angular position of the lever then being a measure of the thickness of the workpiece.
  • the strength measuring device can work without contact, in that a light source produces a light beam falling obliquely on the surface of the workpiece and a detector detects the position of the point of incidence of the light beam on the surface.
  • a light source produces a light beam falling obliquely on the surface of the workpiece and a detector detects the position of the point of incidence of the light beam on the surface.
  • the point of impact is further away from the light source than for thick workpieces.
  • a conveyor belt 1 for workpieces 2 is shown.
  • the conveyor belt runs between two deflection rollers 3, 4, one of which is driven.
  • the workpiece 2 runs on the conveyor belt 1 under a grinding belt 5, which is designed as an endless belt and is guided around at least three deflection rollers 6.
  • the upper deflection roller is not shown in the drawing.
  • Two of guide rollers 6 are parallel to the upper run of the F örder- belt 1 is aligned so that the grinding belt 5 between the two rollers 6 (grinding zone) runs parallel to the upper run of the conveyor belt 1.
  • the grinding belt 5 is pressed between the two mentioned deflection rollers 6 with the help of a pressure shoe 7 against the workpiece 2.
  • the compressive force is set by an electromagnet 8, the excitation current of which is set via a voltage supply 9 with the aid of a computer 10.
  • the computer 10 is equipped with a workpiece detection device 11 bound, which detects the presence of a workpiece part in the area of the respective pressure shoe 7 and forwards this information to the computer 10.
  • An input keypad is also connected to the computer 10, with which, for. B. the height of the grinding 'pressure can be entered for full-surface grinding for the specific workpiece 2.
  • the data entered into the computer can be made visible on a screen 12 also connected to the computer 10.
  • Figure 2 illustrates that a plurality of pressure shoes 7 arranged side by side form a grinding bar 13 arranged transversely to the conveying direction of the workpiece 2.
  • the workpiece detection device 11 is aligned with the pressure bar 13 in the conveying direction of the workpiece 2. It consists of a large number of individual detectors 14 which are arranged next to one another transversely to the conveying direction. In each case three of the detectors 14 are aligned with a pressure shoe 7.
  • the detectors 14 therefore divide the width of the pressure shoe 7 into three areas and the detectors 14 recognize whether the workpiece only enters one, two or all three areas of the associated pressure bar 7 .
  • Corresponding information reaches the computer 10, which then generates the excitation current required for the electromagnet 8 of the associated pressure shoe.
  • the pressing force of a pressure shoe 7, in the area of which the workpiece only partially enters, is therefore set correspondingly lower. Since the workpiece 2 passes through a certain transport time between the workpiece detection device 11 and the pressure beam 13, the control by the workpiece detection device 11 must not take place immediately. The setting of a fixed delay time is unfavorable because it means that fluctuations in the feed speed of the conveyor belt 1 cannot be taken into account and, moreover, an incorrect control system occurs when the conveyor belt 1 is at a standstill. For this reason, the deflection roller 4 is provided with a pulse generator 15, the pulses of which are passed to the computer 10, which in turn only receives a predetermined number of pulses has to wait to perform the control caused by the workpiece detection device 11.
  • FIG. 3 illustrates the possible consideration of the thickness of the workpiece 2 for the pressing force by the invention.
  • a thickness measuring device is arranged in front of the pressure shoes 7.
  • the thickness measuring device is formed by a scanning roller 16, which is pivoted at a fixed point 18 by means of a lever 17.
  • a signal (not shown) at point 18 can therefore be used to generate a signal proportional to the strength of the workpiece 2.
  • the signal proportional to the thickness of the workpiece 2 can be processed in the computer 10 (FIG. 1) and to determine the! Control current of the pressure shoe 7 - and thus the pressure force F - are used.
  • Figure 3 illustrates in the right part that a larger pressing force F 1 is generated for a thinner workpiece 2 than for a thicker workpiece, in which the pressing force F 2 is smaller.
  • the pressure forces F 1 and F 2 generated by the pressure shoe are different in order to ensure the same pressure force of the grinding belt 5 on the workpiece 2 in both cases. It has to be taken into account that the sanding belt for a thinner workpiece must be deflected more between the rollers 6 than for a thicker workpiece 2. Therefore, the sanding belt 5 sets the pressing force F 1 of the pressure shoe 7 with a thinner workpiece 2 with a greater elastic counterforce opposed to a thicker workpiece 2. This stronger counterforce is compensated for by the stronger pressure force F 1 of the pressure shoe 7.
  • Processing strength measuring device consists of a light source 19 and a light detector 20.
  • the light source 19 emits a light beam 21 obliquely to the surface of the workpiece 2, which generates a light spot S1, S2 on the workpieces 2.
  • the light detector 20 detects the position of the respective light spot S1, S2 and thus has information about the thickness of the workpiece 2.
  • the light spot S1 is created further away from the light source 19 than in the case of a stronger workpiece, the light spot S2.
  • the light detector 20 can, for example, consist of linearly aligned photo sensors in the plane of the light beam 21, which are arranged in such a way that they essentially only detect light falling perpendicular to the surface of the light detector. Different photo sensors of the light detector 20 therefore respond in accordance with the different thickness of the workpiece 2. The information about the thickness of the workpiece 2 therefore results directly from the fact which of the photo sensors of the light detector 20 has addressed.

Landscapes

  • 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)
  • Massaging Devices (AREA)
EP84115225A 1984-01-21 1984-12-12 Ponceuse à bande Expired EP0155380B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115225T ATE30690T1 (de) 1984-01-21 1984-12-12 Bandschleifmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3402104 1984-01-21
DE3402104A DE3402104C2 (de) 1984-01-21 1984-01-21 Bandschleifmaschine

Publications (2)

Publication Number Publication Date
EP0155380A1 true EP0155380A1 (fr) 1985-09-25
EP0155380B1 EP0155380B1 (fr) 1987-11-11

Family

ID=6225600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115225A Expired EP0155380B1 (fr) 1984-01-21 1984-12-12 Ponceuse à bande

Country Status (6)

Country Link
US (1) US4601134A (fr)
EP (1) EP0155380B1 (fr)
JP (1) JPH074751B2 (fr)
AT (1) ATE30690T1 (fr)
DE (2) DE3402104C2 (fr)
ES (1) ES8606053A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569139A1 (fr) * 1984-08-18 1986-02-21 Zeiss Carl Fa Procede et dispositif pour le rodage ou le polissage de surfaces optiques
EP0571343A1 (fr) * 1992-05-21 1993-11-24 Dmc S.P.A. Ponceuse pour panneaux de bois
EP0625407A1 (fr) * 1993-05-18 1994-11-23 Jürgen Dipl.-Ing. Heesemann Pongeuse
DE29805726U1 (de) * 1998-03-24 1998-08-27 Heesemann Juergen Bandschleifmaschine
EP0976495A1 (fr) * 1998-07-28 2000-02-02 Jürgen Dipl.-Ing. Heesemann Meuleuse à bande abrasive
CN106112758A (zh) * 2016-07-01 2016-11-16 芜湖中驰机床制造有限公司 一种自检式高精度工件打磨控制系统
WO2018024769A3 (fr) * 2016-08-05 2018-03-29 Weeke Bohrsysteme Gmbh Système d'usinage et procédé d'usinage

Families Citing this family (43)

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US4527359A (en) * 1984-04-23 1985-07-09 Timesavers, Inc. Segmented platen with diaphragm cylinder control
DE3639329C1 (de) * 1986-11-18 1988-02-25 Heesemann Karl Masch Bandschleifmaschine
JPH0811357B2 (ja) * 1987-09-01 1996-02-07 アミテック株式会社 ワイドベルトサンダー機
JPH0796186B2 (ja) * 1988-03-25 1995-10-18 アミテック株式会社 ワイドベルトサンダー機
SE462078B (sv) * 1988-09-16 1990-05-07 Tom Nordquist Saett foer bandslipning av aemnen av metaller och metallegeringar
JP2562971B2 (ja) * 1989-09-29 1996-12-11 アミテック株式会社 ワイドベルトサンダー機
JPH03121768A (ja) * 1989-10-02 1991-05-23 Amitetsuku Kk ワイドベルトサンダー機
US5367866A (en) * 1990-10-05 1994-11-29 J. D. Phillips Corporation Crankpin grinder
US5210978A (en) * 1992-05-26 1993-05-18 J. D. Phillips Corporation Nose piece retainer for abrasive belt backing shoe
DE4232830C5 (de) * 1992-09-30 2004-08-19 Georg Weber Vorrichtung zum Entfernen von Schleifstaub von Werkstücken in Bandschleifmaschinen
US5441437A (en) * 1993-02-18 1995-08-15 Hulstedt; Bryan A. Compliant constant-force follower device for surface finishing tool
DE684107T1 (de) * 1994-05-24 1996-08-29 Timesavers Inc Automatische Laufbegrenzungsperre für Drückblock eines Feinbearbeitungsmaschine.
US5575707A (en) * 1994-10-11 1996-11-19 Ontrak Systems, Inc. Polishing pad cluster for polishing a semiconductor wafer
DE19500189B4 (de) * 1995-01-05 2006-09-14 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren zur Anpressung eines Tastorgans an einen Faserverband in einer Bandführung und Vorrichtung zu deren Erzeugung
US5846122A (en) * 1995-04-25 1998-12-08 Lucent Technologies Inc. Method and apparatus for polishing metal-soluble materials such as diamond
DE19518373C2 (de) * 1995-05-23 1997-09-25 Heesemann Karl Masch Schleifmaschine mit einer Saugspannanlage
IT1294167B1 (it) * 1997-08-08 1999-03-22 Scm Group Autec Division Spa Macchina levigatrice di pannelli con cambio automatico e rigenerazione del nastro abrasivo utensile.
US5997386A (en) * 1997-12-16 1999-12-07 Pridgeon & Clay, Inc. Automated deburring assembly
US6428390B1 (en) * 1999-06-29 2002-08-06 Corning Incorporated Method and apparatus for edge finishing glass sheets
US6234871B1 (en) * 1999-10-26 2001-05-22 Seaman Corporation Method and apparatus for removing a thin coating from a fabric
NO20014079L (no) * 2001-08-22 2003-02-24 Grobi As Anordning for kantsliping av plater
US7371159B2 (en) * 2002-07-22 2008-05-13 Stephan Kundig Devices with angularly adjustable sanding units
DE10239191A1 (de) 2002-08-21 2004-03-11 Heesemann, Jürgen, Dipl.-Ing. Schleifmaschine und Verfahren zum Schleifen eines Werkstücks
WO2004103639A1 (fr) * 2003-05-22 2004-12-02 Costa Levigatrici Spa Procede et dispositif de sablage d'objets plats
WO2005018877A1 (fr) 2003-08-22 2005-03-03 Kündig Ag Dispositifs permettant de modifier la position de l'unite a elements de detection en cas d'inclinaison d'un coussin a meuler segmente et unite de commande dudit coussin
US7438628B2 (en) * 2003-08-22 2008-10-21 Stephan Kundig Device and control unit for belt sanding systems
EP1656237B1 (fr) * 2003-08-22 2007-08-22 Kündig Ag Commande d'un dispositif de poncage comportant des rouleaux de produit abrasif montes sur des arbres d'enroulement
TWI275451B (en) * 2005-01-11 2007-03-11 Asia Ic Mic Process Inc Measurement of thickness profile and elastic modulus profile of polishing pad
EP1901880B1 (fr) * 2005-04-01 2015-10-21 Kündig Ag Dispositif de modification de la position des segments en position oblique d'un coussin a meuler segmente
US20080218763A1 (en) 2006-03-21 2008-09-11 Hans Weber Maschinenfabrik Gmbh Apparatus for optically determining the surface contour of flat workpieces in a wide belt abrading machine
CH701756A1 (de) * 2009-09-07 2011-03-15 Kuendig Ag Querband-Schleifvorrichtung mit Einsatzsteuerung der ganzen Schleifeinheit.
US9637263B2 (en) * 2010-10-20 2017-05-02 Siemens Industry, Inc. Film-wrapped bundle opener
DE102011050681A1 (de) 2011-05-27 2012-11-29 Hans Weber Maschinenfabrik Gmbh Durchlaufschleifmaschine
DE102012211634A1 (de) 2012-07-04 2014-01-09 Bütfering Schleiftechnik GmbH Berührungsloses Abtastsystem für Schleifmaschinen
ITBO20130437A1 (it) * 2013-08-05 2015-02-06 Viet Italia S R L Con Unico Socio Metodo e macchina per la levigatura di pannelli di legno o simili
KR101558548B1 (ko) * 2014-04-22 2015-10-13 한국지질자원연구원 자동 박편 연마 장치
CN106141840A (zh) * 2016-07-01 2016-11-23 芜湖中驰机床制造有限公司 一种自检式高精度工件端面打磨设备
CN106041656B (zh) * 2016-07-01 2018-09-25 芜湖中驰机床制造有限公司 一种高效平面打磨机床自动控制系统
CN106112717A (zh) * 2016-07-01 2016-11-16 芜湖中驰机床制造有限公司 一种连续打磨的高效平面打磨机床
DE102016120330A1 (de) 2016-10-25 2018-04-26 Karl Heesemann Maschinenfabrik Gmbh & Co. Kg Schleifmaschine
JP6852034B2 (ja) * 2018-10-15 2021-03-31 本田技研工業株式会社 研磨装置
US10300630B1 (en) * 2018-12-20 2019-05-28 Alex Xie Cutting equipment and its controllers
DE102020119149A1 (de) 2020-07-21 2022-01-27 Karl Heesemann Maschinenfabrik Gmbh & Co. Kg Verfahren zum Schleifen einer Oberfläche eines Werkstückes und Vorrichtung dazu

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CH372945A (de) * 1958-03-14 1963-10-31 Friedrich Hofmann Ernst Berührungslose Messteuerung für Flächenschleifmaschinen
US3660950A (en) * 1969-04-22 1972-05-09 Agency Ind Science Techn Method of controlling the actual stock removal in surface belt grinding
DE1921566A1 (de) * 1969-04-28 1970-12-03 Walter Tilleke Druckbalken fuer Schleifmaschinen
DE2136597A1 (de) * 1971-07-22 1973-02-01 Ernst Maschf Gmbh Paul Vorrichtung zum schleifen mittels eines endlosen schleifbandes
DE2757314B2 (de) * 1977-12-22 1980-03-06 Paul Dipl.-Ing. 6925 Eschelbronn Ernst Jun. Breitbandschleifmaschine
DE8223923U1 (de) * 1982-08-25 1983-04-21 Ernst Jun., Paul, Dipl.-Ing., 6925 Eschelbronn Druckbalken für eine Breitbandschleifmaschine
DE8307096U1 (de) * 1983-03-11 1983-06-23 Weber, Heinz, Dipl.-Ing., 8640 Kronach Vorrichtung zum Steuern des Zu- und Wegstellens des Schleifschuhes einer Breitband-Schleifmaschine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569139A1 (fr) * 1984-08-18 1986-02-21 Zeiss Carl Fa Procede et dispositif pour le rodage ou le polissage de surfaces optiques
EP0571343A1 (fr) * 1992-05-21 1993-11-24 Dmc S.P.A. Ponceuse pour panneaux de bois
EP0625407A1 (fr) * 1993-05-18 1994-11-23 Jürgen Dipl.-Ing. Heesemann Pongeuse
DE29805726U1 (de) * 1998-03-24 1998-08-27 Heesemann Juergen Bandschleifmaschine
EP0976495A1 (fr) * 1998-07-28 2000-02-02 Jürgen Dipl.-Ing. Heesemann Meuleuse à bande abrasive
US6290570B1 (en) 1998-07-28 2001-09-18 Juergen Heesemann Belt grinding machine
CN106112758A (zh) * 2016-07-01 2016-11-16 芜湖中驰机床制造有限公司 一种自检式高精度工件打磨控制系统
WO2018024769A3 (fr) * 2016-08-05 2018-03-29 Weeke Bohrsysteme Gmbh Système d'usinage et procédé d'usinage
US11325219B2 (en) 2016-08-05 2022-05-10 Homag Bohrsysteme Gmbh Machining device and machining method

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JPH074751B2 (ja) 1995-01-25
EP0155380B1 (fr) 1987-11-11
JPS60167757A (ja) 1985-08-31
ES539670A0 (es) 1986-04-01
US4601134A (en) 1986-07-22
DE3402104C2 (de) 1986-07-17
DE3467318D1 (en) 1987-12-17
DE3402104A1 (de) 1985-08-01
ES8606053A1 (es) 1986-04-01
ATE30690T1 (de) 1987-11-15

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