WO1986001447A1 - Process and device for supporting a grinding belt of a belt-grinding machine - Google Patents
Process and device for supporting a grinding belt of a belt-grinding machine Download PDFInfo
- Publication number
- WO1986001447A1 WO1986001447A1 PCT/EP1985/000430 EP8500430W WO8601447A1 WO 1986001447 A1 WO1986001447 A1 WO 1986001447A1 EP 8500430 W EP8500430 W EP 8500430W WO 8601447 A1 WO8601447 A1 WO 8601447A1
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- WO
- WIPO (PCT)
- Prior art keywords
- belt
- contact element
- grinding
- speed
- supported
- 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.)
- Ceased
Links
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 method for supporting a grinding belt of a belt grinding machine and a belt grinding machine for carrying out this method of the type specified in the preamble of claims 1 and 6.
- both the sanding belt and the contact element should have the softest, most flexible behavior possible.
- a belt grinding machine of this type is known (US Pat. No. 2,578,662), in which the grinding belt for grinding more complicated workpieces is guided over a very soft contact disk and its belt tension can be adapted to different operating conditions.
- the grinding belt is driven there by a motor-driven traction sheave, while the contact wheel is rotated indirectly via the grinding belt, which also acts as a transmission element.
- a relatively high minimum tension is required with regard to the belt drive laws.
- An abrasive belt with such a high belt tension does not have sufficient adaptability in order to be able to quickly and cleanly grind even complicated workpiece surfaces, in particular grooves and the like.
- each abrasive grain remains supported over the entire contact path and remains in the material over a longer distance. This results in a large number of more or less long grinding lines in the surface of the processed material.
- the invention is therefore based on the object of developing a method of the type mentioned at the outset which enables the production of a micrograph with relatively short grinding tracks up to point grinding. Another object is to create a belt sander to perform this process. To achieve this object, the combinations of features specified in claims 1 and 6 are proposed. Further advantageous refinements and developments of the invention result from the subclaims.
- the invention is based on the idea that, in order to avoid long grinding marks, the abrasive belt in the contact area is alternately only briefly supported by the contact element at different points in rapid succession, so that each abrasive grain remains only briefly in the material to be processed. With a very short residence time of the abrasive grain, point grinding quality can be achieved in this way, which, similar to sandblasting, no longer reveals any advantages »
- the contact element is provided with a speed which is independent of the speed of the abrasive belt and is opposite it different peripheral speed driven.
- Good grinding results have been achieved at a peripheral speed of the contact element which is about 10 to 30% greater or less than the speed of the grinding belt.
- the grinding belt is expediently supported by the contact element in a rectilinear and therefore relatively easily deformable area, so that it comes into contact with approximately the same pressure in every fillet or on every elevation of the workpiece to be machined.
- the surface of the contact element can be designed to provide optimal support for the sanding belt and does not need to have any more running properties for the sanding belt.
- a contact element has proven to be particularly advantageous that in the circumferential area there are a number of elastically flexible, slack or swiveling strips, threads, hose pieces or slats which project radially under the action of the centrifugal force.
- the contact pressure in the contact area with a contact element rigidly mounted on the machine frame by varying the speed of the contact element and thus the centrifugal force acting on the radially expanding surface layer. With varying speed, however, the effective hardness of the pressing contact element also changes at the same time.
- the contact element can be pivoted against the grinding belt around an axis arranged outside its axis of rotation under the action of an adjustable force.
- Figure 1 is a side view of a belt grinder with a motor-driven contact element mounted on a rigid machine arm.
- 2 shows a side view of a belt grinding machine with a motor-driven contact element that can be pressed against the grinding belt under a predetermined force.
- the belt grinders shown in the drawing essentially consist of one on a machine frame
- the guide roller 14 ensures exact guidance of the grinding belt 18 even during the start-up and braking phase. With the tension roller 16, the belt tension can largely be adjusted as desired. The speed of the grinding belt can be adjusted over a wide range by means of the infinitely variable speed of the drive pulley 12. Because of the relatively large diameter of the traction sheave 12 and the the long looping distance caused by this ensures a sufficient static friction for driving the grinding belt 18 even with low belt tension.
- the contact element 20 consists of a rigid support ring 26 and a resilient layer 28 attached to the circumference of the support ring, which layer comprises a plurality of lamellar strips, threads or hoses made of flexible or pliable material, for example made of textile threads or - distributed over the circumference of the support ring. Contains fabrics or rubber.
- the strips or tubes can also be articulated on the support ring around an axis parallel to the axis of rotation 19. When the contact element 20 rotates rapidly, the strips, threads or tube pieces are under the action of the centrifugal force by driving them radially outwards and beating them against the back of the grinding belt in the contact area.
- the contact element 20 is on a rigid arm 30 of the Machine frame 10 mounted and can be driven by a motor 32 and a belt drive 34 independently of the drive pulley 12.
- the force acting against the abrasive belt 18 is here largely determined by the speed of the contact element 20 and the resulting centrifugal force acting on the flexible layer 28.
- the contact element 20 is mounted on an arm 26 of a toggle lever which can be pivoted about the axis 38 on the machine frame 10, on the arm 40 of which a weight 42 determining the pressing force of the contact element is slidably arranged.
- the rotary drive of the contact element 20 takes place here by means of a gear motor which is infinitely variable in its speed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Verfahren und Vorrichtung zur Unterstützung eines Schleif bandes einer Bandschleifmaschine Method and device for supporting a grinding belt of a belt grinding machine
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zur Unterstützung eines Schleifbands einer Bandschleifmaschine sowie eine Band¬ schleifmaschine zur Durchführung dieses Verfahrens der im Oberbegriff der Ansprüche 1 und 6 angegebenen Gattung.The invention relates to a method for supporting a grinding belt of a belt grinding machine and a belt grinding machine for carrying out this method of the type specified in the preamble of claims 1 and 6.
Beim Kontaktschleifen wird das zu bearbeitende Werkstück im Bereich des Kontaktelements gegen das Schleifband ge¬ halten. Um ein einwandfreies, ansatzfreies Schleifen zu ermöglichen, sollte sowohl das Schleifband als auch das Kontaktelement ein möglichst weiches, nachgiebiges Verhalten aufweisen.During contact grinding, the workpiece to be machined is held against the grinding belt in the area of the contact element. In order to enable perfect, batch-free sanding, both the sanding belt and the contact element should have the softest, most flexible behavior possible.
Es ist eine Bandschleifmaschine dieser Art bekannt (US-PS 25 78 662), bei der das Schleifband zum Schleifen komplizierterer Werkstücke über eine sehr weiche Kontakt¬ scheibe geführt und bezüglich seiner Bandspannung unter¬ schiedlichen Einsatzbedingungen anpaßbar ist. Das Schleif¬ band wird dort über eine motorisch angetriebene Treibscheibe angetrieben, während die Kontaktscheibe indirekt über das gleichzeitig als Transraissionselement wirkende Schleifband in Drehbewegung versetzt wird. Um einen sicheren Antrieb des Schleifbandes und der Kontaktscheibe mit annähernd gleichbleibender Geschwindigkeit zu gewährleisten, ist daher im Hinblick auf die Riementriebsgesetze eine relativ hohe Mindestspannung erforderlich. Ein Schleifband mit einer so hohen Bandspannung weist indes keine ausreichende An¬ passungsfähigkeit auf, um auch komplizierte, insbesondere Hohlkehlen und dergleichen aufweisende Werkstückoberflächen rasch und sauber beschleifen zu können. Um diesen Nachteil zu vermeiden, ist bereits vorgeschlagen, worden (DE-PS 24 00 267), die Kontaktscheibe unmittelbar motorisch anzutreiben und zusätzlich eine Umlenkrolle zu verwenden, die eine im Verhältnis zu ihrem Durchmesser geringe Masse aufweist. Aufgrund des Direktantriebs der Kontaktscheibe entfällt die Treibriemenfunktion des Schleif¬ bandes, abgesehen von der durch das Schleifband noch ange¬ triebenen leer mitlaufenden Umlenkrolle, weitgehend, so daß die Maschine mit viel geringerer Schleifbandspannung arbeiten kann. Dies ermöglicht eine bessere Bearbeitbarkeit auch komplizierter Werkstückoberflächen, da sich das unter sehr geringer Spannung stehende Schleifband bei gleich¬ zeitiger Verwendung einer sehr weichen Kontaktscheibe Wölbungen und Hohlkehlen in der Werkstückoberfläche optimal anzupassen vermag. Da die Geschwindigkeit des Schleifbands und die Umfangsgeschwindigkeit der Kontaktscheibe im Be¬ triebszustand gleich sind, bleibt dort allerdings jedes Schleifkorn über den gesamten Kontaktweg hin unterstützt und verbleibt über eine längere Strecke im Material. Daraus resultieren eine- Vielzahl von mehr oder weniger langen Schleifstrichen in der Oberfläche des bearbeiteten Materials, Es gibt aber Anwendungsfälle, in denen eine solche Ober¬ flächenstruktur unerwünscht ist.A belt grinding machine of this type is known (US Pat. No. 2,578,662), in which the grinding belt for grinding more complicated workpieces is guided over a very soft contact disk and its belt tension can be adapted to different operating conditions. The grinding belt is driven there by a motor-driven traction sheave, while the contact wheel is rotated indirectly via the grinding belt, which also acts as a transmission element. In order to ensure a safe drive of the sanding belt and the contact disk with an approximately constant speed, a relatively high minimum tension is required with regard to the belt drive laws. An abrasive belt with such a high belt tension, however, does not have sufficient adaptability in order to be able to quickly and cleanly grind even complicated workpiece surfaces, in particular grooves and the like. In order to avoid this disadvantage, it has already been proposed (DE-PS 24 00 267) to drive the contact disk directly by motor and additionally to use a deflection roller which has a low mass in relation to its diameter. Due to the direct drive of the contact disk, the drive belt function of the grinding belt is largely eliminated, apart from the idling idler pulley which is still driven by the grinding belt, so that the machine can work with much lower grinding belt tension. This enables better machining of even complicated workpiece surfaces, since the grinding belt, which is under very low tension, can optimally adapt to curvatures and grooves in the workpiece surface while using a very soft contact disk. Since the speed of the grinding belt and the peripheral speed of the contact disk are the same in the operating state, each abrasive grain remains supported over the entire contact path and remains in the material over a longer distance. This results in a large number of more or less long grinding lines in the surface of the processed material. However, there are applications in which such a surface structure is undesirable.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Ver¬ fahren der eingangs angegebenen Art zu entwickeln, das die Erzeugung eines Schliffbildes mit relativ kurzen Schleif¬ spuren bis hin zum Punktschliff ermöglicht. Eine weitere Aufgabe besteht in der Schaffung einer Bandschleifmaschine zur Durchführung dieses Verfahrens. Zur Lösung dieser Aufgabe werden die in den Ansprüchen 1 und 6 angegebenen Merkmalskombinationen vorgeschlagen. Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.The invention is therefore based on the object of developing a method of the type mentioned at the outset which enables the production of a micrograph with relatively short grinding tracks up to point grinding. Another object is to create a belt sander to perform this process. To achieve this object, the combinations of features specified in claims 1 and 6 are proposed. Further advantageous refinements and developments of the invention result from the subclaims.
Die Erfindung geht von dem Gedanken aus, daß zur Vermeidung langer Schleifspuren das Schleifband in Kontaktbereich in schneller Folge abwechselnd an verschiedenen Stellen nur jeweils kurzzeitig von dem Kontaktelement unterstützt wird, so daß jedes Schleifkorn nur kurzzeitig in dem zu be¬ arbeitenden Material verbleibt. Bei sehr kurzer Aufenthalts¬ dauer des Schleifkorns kann auf diese Weise Punkt¬ schliffqualität erzielt werden, die ähnlich wie beim Sand¬ strahlen keine Vorz.ugsric tungen mehr erkennen läßt»The invention is based on the idea that, in order to avoid long grinding marks, the abrasive belt in the contact area is alternately only briefly supported by the contact element at different points in rapid succession, so that each abrasive grain remains only briefly in the material to be processed. With a very short residence time of the abrasive grain, point grinding quality can be achieved in this way, which, similar to sandblasting, no longer reveals any advantages »
Gemäß einem bevorzugten Ausführungsbeispiel des erfindungs¬ gemäßen Verfahrens, bei welchem das Schleifband durch ein rotierendes Kontaktelement mit seiner unter der Einwirkung der Zentrifugalkraft radial ausdehnbaren Umfangsflache im Kontaktbereich stützend beaufschlagt wird, wird das Kontakt¬ element mit einer von der Geschwindigkeit des Schleifbands unabhängigen und gegenüber dieser unterschiedlichen Umfangs¬ geschwindigkeit angetrieben. Gute Schleifergebnisse wurden bei einer Umfangsgeschwindigkeit des Kontaktelements erzielt, die um etwa 10 bis 30 % größer oder kleiner als die Ge¬ schwindigkeit des Schleifbandes ist. Das Schleifband wird dabei zweckmäßig in einem geradlinig verlaufenden und dadurch relativ leicht verformbaren Bereich von dem Kontaktelement unterstützt, so daß es in jeder Hohlkehle oder an jeder Erhebung des zu bearbeitenden Werkstücks mit annähernd gleichem Druck zur Anlage kommt. Das Kontaktelement kann dabei in seiner Obenflächestruktur ganz auf eine optimale Unterstützung des Schleifbandes hin konstruiert werden und braucht keine Laufeigenschaften für das Schleifband mehr aufzuweisen. Als besonders vorteilhaft hat sich ein Kontaktelement erwiesen, daß im Umfangsbereich eine Vielzahl elastisch biegsamer, biegeschlaffer oder schwenkbarer, unter der Einwirkung der Zentrifugalkraft im wesentlichen radial abstehender Streifen-, Faden-, Schlauchstücke oder -lamellen aufweist.According to a preferred exemplary embodiment of the method according to the invention, in which the abrasive belt is supported by a rotating contact element with its circumferential surface which can be expanded radially under the action of the centrifugal force in the contact area, the contact element is provided with a speed which is independent of the speed of the abrasive belt and is opposite it different peripheral speed driven. Good grinding results have been achieved at a peripheral speed of the contact element which is about 10 to 30% greater or less than the speed of the grinding belt. The grinding belt is expediently supported by the contact element in a rectilinear and therefore relatively easily deformable area, so that it comes into contact with approximately the same pressure in every fillet or on every elevation of the workpiece to be machined. The surface of the contact element can be designed to provide optimal support for the sanding belt and does not need to have any more running properties for the sanding belt. A contact element has proven to be particularly advantageous that in the circumferential area there are a number of elastically flexible, slack or swiveling strips, threads, hose pieces or slats which project radially under the action of the centrifugal force.
Grundsätzlich ist es möglich, den Anpreßdruck im Kontakt¬ bereich mit einem starr am Maschinengestell gelagerten Kon¬ taktelement durch Variation der Drehzahl des Kontaktelements und damit der auf die sich radial ausdehnende Oberflächen¬ schicht auswirkenden Zentrifugalkraft in gewissen Grenzen einzustellen. Mit variierender Drehzahl ändert sich gleich¬ zeitig jedoch auch die efektive Härte des andrückenden Kon¬ taktelements. Um hiervon unabhängig die Anpreßkraft ein¬ stellen zu können, wird gemäß einem weiteren Ausführungs¬ beispiel der Erfindung vorgeschlagen, daß das Kontaktelement um eine außerhalb seiner Drehachse angeordnete Achse unter der Einwirkung einer einstellbaren Kraft gegen das Schleif¬ band verschwenkbar ist.In principle, it is possible to set the contact pressure in the contact area with a contact element rigidly mounted on the machine frame by varying the speed of the contact element and thus the centrifugal force acting on the radially expanding surface layer. With varying speed, however, the effective hardness of the pressing contact element also changes at the same time. In order to be able to set the contact pressure independently of this, it is proposed according to a further embodiment of the invention that the contact element can be pivoted against the grinding belt around an axis arranged outside its axis of rotation under the action of an adjustable force.
In der Zeichnung sind zwei bevorzugte Ausführungsbeispiele der Erfindung in schematischer Weise dargestellt. Es zeigenIn the drawing, two preferred embodiments of the invention are shown in a schematic manner. Show it
Fig. 1 eine Seitenansicht einer Bandschleifmaschine mit an einem starren Maschinenausleger gelagertem, motorisch angetriebenem Kontaktelement; Fig. 2 eine Seitenansicht einer Bandschleifmaschine mit unter vorgegebener Kraft gegen das Schleifband andrückbarem, motorisch angetriebenem Kontakt¬ element.Figure 1 is a side view of a belt grinder with a motor-driven contact element mounted on a rigid machine arm. 2 shows a side view of a belt grinding machine with a motor-driven contact element that can be pressed against the grinding belt under a predetermined force.
Die in der Zeichnung dargestellten Bandschleifmaschinen bestehen im wesentlichen aus einer an einem MaschinengestellThe belt grinders shown in the drawing essentially consist of one on a machine frame
10 mit horizontaler Achse gelagerten, durch einen Motor10 with horizontal axis, by a motor
11 angetriebenen Treibscheibe 12, je einer zur Treibscheibe achparallelen Führungsrolle 14 und Spannrolle 16, einem über die Treibscheibe 12, die Führungsrolle 14 und die Spann¬ rolle 16 geführten biegeschlaffen Schleifband 18 und einem unabhängig von der Treibscheibe motorisch angetriebenen, um eine Achse 19 rotierenden Kontaktelement 20, das im Be¬ triebszustand mit seiner Umfangsflache die Rückseite des Schleifbands 18 stützend beaufschlagt. Der Kontaktbereich, in welchem ein zu bearbeitendes Werkstück 22 gegen das von dem Kontaktelement 20 unterstützte Schleifband 18 gehalten wird, befindet sich bei den gezeigten Ausführungsbeispielen an dem von der Führungsrolle 14 zur Spannrolle 16 senkrecht nach unten geführten geradlinigen Trum 24 des umlaufenden Schleifbands 18.11 driven traction sheave 12, one guide roller 14 and tensioning roller 16 axially parallel to the traction sheave, one slack grinding belt 18 guided over the traction sheave 12, the guide roller 14 and the tensioning roller 16 and a contact element which is driven by a motor and rotates independently of the traction sheave about an axis 19 20, which, in the operating state, supports the rear side of the grinding belt 18 with its circumferential surface. The contact area in which a workpiece 22 to be machined is held against the grinding belt 18 supported by the contact element 20 is, in the exemplary embodiments shown, on the rectilinear strand 24 of the rotating grinding belt 18, which runs vertically downward from the guide roller 14 to the tensioning roller 16.
Die Führungsrolle 14 sorgt für eine exakte Führung des Schleifbands 18 auch während der Anfahr- und Abbremsphase. Mit der Spannrolle 16 kann die Bandspannung weitgehend be¬ liebig eingestellt werden. Die Geschwindigkeit des Schleif¬ bands ist über die stufenlos verstellbare Drehzahl der Treib¬ scheibe 12 in einem weiten Bereich einstellbar. Wegen des relativ großen Durchmessers der Treibscheibe 12 und der dadurch bedingten langen Umschlingungsstrecke ist eine aus¬ reichende Haftreibung für den Antrieb des Schleifbandes 18 auch bei geringer Bandspannung gewährleistet.The guide roller 14 ensures exact guidance of the grinding belt 18 even during the start-up and braking phase. With the tension roller 16, the belt tension can largely be adjusted as desired. The speed of the grinding belt can be adjusted over a wide range by means of the infinitely variable speed of the drive pulley 12. Because of the relatively large diameter of the traction sheave 12 and the the long looping distance caused by this ensures a sufficient static friction for driving the grinding belt 18 even with low belt tension.
Das Kontaktelement 20 besteht aus einem starren Tragring 26 und einer am Umfang des Tragrings befestigten nachgiebigen Schicht 28, die eine Vielzahl von über den Umfang des Trag¬ rings verteilt angeordneten lamellenartigen Streifen, Fäden oder Schläuchen aus biegsamem oder biegeschlaffem Material, beispielsweise aus Textilfäden oder -Stoffen oder Gummi enthält. Die Streifen oder Schläuche können auch um eine zur Drehachse 19 parallele Achse schwenkbar am Tragringum ang angelenkt sein. Bei schnell drehendem Kontaktelement 20 stehen die Streifen, Fäden oder Schläuchstücke so unter der Einwirkung der Zentrifugalkraft, das sie radial nach außen getrieben und im Kontaktbereich gegen die Rückseite des Schleifbands geschlagen werden. Durch Einstellung einer von der Schleifbandgeschwindigkeit unterschiedlichen Umfangs¬ geschwindigkeit des Kontaktelements 20 wird erreicht, daß die Streifen, Fäden oder Schlauchstücke in schneller Folge abwechselnd an verschiedenen Stellen jeweils kurzzeitig gegen das Schleifband schlagen. Dadurch werden die Schleif¬ körner lokal nur kurzzeitig unterstützt, so daß sich an der Oberfläche eines gegen das Schleifband gedrückten Werk¬ stücks nur sehr kurze Schleifspuren bilden, die ein gleich¬ mäßiges, nahezu streifenfreies SchleJLfbild ergeben.The contact element 20 consists of a rigid support ring 26 and a resilient layer 28 attached to the circumference of the support ring, which layer comprises a plurality of lamellar strips, threads or hoses made of flexible or pliable material, for example made of textile threads or - distributed over the circumference of the support ring. Contains fabrics or rubber. The strips or tubes can also be articulated on the support ring around an axis parallel to the axis of rotation 19. When the contact element 20 rotates rapidly, the strips, threads or tube pieces are under the action of the centrifugal force by driving them radially outwards and beating them against the back of the grinding belt in the contact area. By setting a peripheral speed of the contact element 20 which differs from the abrasive belt speed, it is achieved that the strips, threads or hose pieces alternately hit the abrasive belt briefly at different points in rapid succession. As a result, the abrasive grains are supported locally only briefly, so that only very short abrasive tracks form on the surface of a workpiece pressed against the abrasive belt, which result in a uniform, almost streak-free abrasive pattern.
Im Falle des in Fig. 1 gezeigten Ausführungsbeispiels ist das Kontaktelement 20 an einem starren Ausleger 30 des Maschinengestells 10 gelagert und ist durch einen Motor 32 und einen Riementrieb 34 unabhängig von der Treibscheibe 12 antreibbar. Die gegen das Schleifband 18 wirkende Kraft wird hier maßgeblich durch die Drehzahl des Kontaktelements 20 und die dadurch bedingte, sich auf die nachgiebige Schicht 28 auswirkende Zentrifugalkraf bestimmt.In the case of the embodiment shown in FIG. 1, the contact element 20 is on a rigid arm 30 of the Machine frame 10 mounted and can be driven by a motor 32 and a belt drive 34 independently of the drive pulley 12. The force acting against the abrasive belt 18 is here largely determined by the speed of the contact element 20 and the resulting centrifugal force acting on the flexible layer 28.
Bei dem in Fig. 2 gezeigten Ausführungsbeispiel ist das Kontaktelement 20 an einem Arm 26 eines am Maschinengestell 10 um die Achse 38 schwenkbaren Kniehebels gelagert, an dessen Arm 40 ein die Andrückkraft des Kontaktelements be¬ stimmendes Gewicht 42 verschiebbar angeordnet ist. Der Dreh¬ antrieb des Kontaktelemeπts 20 erfolgt hier durch einen in seiner Drehzahl stufenlos verstellbaren Getriebemotor. In the embodiment shown in FIG. 2, the contact element 20 is mounted on an arm 26 of a toggle lever which can be pivoted about the axis 38 on the machine frame 10, on the arm 40 of which a weight 42 determining the pressing force of the contact element is slidably arranged. The rotary drive of the contact element 20 takes place here by means of a gear motor which is infinitely variable in its speed.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843430823 DE3430823A1 (en) | 1984-08-22 | 1984-08-22 | METHOD AND DEVICE FOR SUPPORTING A GRINDING BELT OF A BELT GRINDING MACHINE |
| DEP3430823.7 | 1984-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1986001447A1 true WO1986001447A1 (en) | 1986-03-13 |
Family
ID=6243598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1985/000430 Ceased WO1986001447A1 (en) | 1984-08-22 | 1985-08-22 | Process and device for supporting a grinding belt of a belt-grinding machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0191072A1 (en) |
| AU (1) | AU4772985A (en) |
| DE (1) | DE3430823A1 (en) |
| WO (1) | WO1986001447A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4226708A1 (en) * | 1992-02-07 | 1993-08-12 | Sig Schweiz Industrieges | Belt type grinding machine with sliding beam to press belt against work piece - has tensioning pulley actuated by pneumatic cylinder to ensure rapid re-adjustment in belt tension |
| EP0575823A1 (en) * | 1992-06-23 | 1993-12-29 | Idromeccanica Di Rosa Valerio | Smoothing-polishing machine for cylindrical surfaces |
| CN111360653A (en) * | 2018-12-26 | 2020-07-03 | 宁波方太厨具有限公司 | A kind of upper wall surface grinding machine of deep drawing type water tank |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621501A (en) * | 2020-12-18 | 2021-04-09 | 山东天舟精密机械有限公司 | Deep hole grinding and polishing device and using method |
| CN112847058B (en) * | 2021-02-05 | 2023-06-30 | 东莞市启航精密五金制品有限公司 | Grinding machine for curved surface machining |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR658868A (en) * | 1928-08-10 | 1929-06-21 | Bariquand Et Marre Atel | Belt polisher |
| US2586848A (en) * | 1945-07-19 | 1952-02-26 | Minnesota Mining & Mfg | Rotary disk platen |
| US2624158A (en) * | 1949-10-26 | 1953-01-06 | Bror G Olving | Buffing machine |
| US2679128A (en) * | 1945-07-19 | 1954-05-25 | Minnesota Mining & Mfg | Rotary disk platen |
| US3482358A (en) * | 1967-09-27 | 1969-12-09 | Clifford Eugene Mooney | Belt sanders |
| GB1490172A (en) * | 1975-12-03 | 1977-10-26 | Inst Mekhaniki Metallopolimern | Pressure roller |
-
1984
- 1984-08-22 DE DE19843430823 patent/DE3430823A1/en not_active Withdrawn
-
1985
- 1985-08-22 WO PCT/EP1985/000430 patent/WO1986001447A1/en not_active Ceased
- 1985-08-22 AU AU47729/85A patent/AU4772985A/en not_active Abandoned
- 1985-08-22 EP EP19850904113 patent/EP0191072A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR658868A (en) * | 1928-08-10 | 1929-06-21 | Bariquand Et Marre Atel | Belt polisher |
| US2586848A (en) * | 1945-07-19 | 1952-02-26 | Minnesota Mining & Mfg | Rotary disk platen |
| US2679128A (en) * | 1945-07-19 | 1954-05-25 | Minnesota Mining & Mfg | Rotary disk platen |
| US2624158A (en) * | 1949-10-26 | 1953-01-06 | Bror G Olving | Buffing machine |
| US3482358A (en) * | 1967-09-27 | 1969-12-09 | Clifford Eugene Mooney | Belt sanders |
| GB1490172A (en) * | 1975-12-03 | 1977-10-26 | Inst Mekhaniki Metallopolimern | Pressure roller |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4226708A1 (en) * | 1992-02-07 | 1993-08-12 | Sig Schweiz Industrieges | Belt type grinding machine with sliding beam to press belt against work piece - has tensioning pulley actuated by pneumatic cylinder to ensure rapid re-adjustment in belt tension |
| EP0575823A1 (en) * | 1992-06-23 | 1993-12-29 | Idromeccanica Di Rosa Valerio | Smoothing-polishing machine for cylindrical surfaces |
| CN111360653A (en) * | 2018-12-26 | 2020-07-03 | 宁波方太厨具有限公司 | A kind of upper wall surface grinding machine of deep drawing type water tank |
| CN111360653B (en) * | 2018-12-26 | 2022-05-17 | 宁波方太厨具有限公司 | A kind of upper wall surface grinding machine of deep drawing type water tank |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4772985A (en) | 1986-03-24 |
| DE3430823A1 (en) | 1986-03-06 |
| EP0191072A1 (en) | 1986-08-20 |
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