EP1112811B1 - Belt grinding machine for grinding of tubing - Google Patents

Belt grinding machine for grinding of tubing Download PDF

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Publication number
EP1112811B1
EP1112811B1 EP00811127A EP00811127A EP1112811B1 EP 1112811 B1 EP1112811 B1 EP 1112811B1 EP 00811127 A EP00811127 A EP 00811127A EP 00811127 A EP00811127 A EP 00811127A EP 1112811 B1 EP1112811 B1 EP 1112811B1
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EP
European Patent Office
Prior art keywords
arm
belt
grinding
spring
pivotal arm
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Expired - Lifetime
Application number
EP00811127A
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German (de)
French (fr)
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EP1112811A2 (en
EP1112811A3 (en
Inventor
Hansueli Beer
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SUHNER INTERTRADE AG
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SUHNER INTERTRADE AG
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    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/06—Portable grinding machines, e.g. hand-guided; Accessories therefor with abrasive belts, e.g. with endless travelling belts; Accessories therefor

Definitions

  • the invention relates to a belt sander for Grinding of tubes according to the generic term of Patent claim 1.
  • the disadvantage of this device is the increasing Wrap angle of the sanding belt around this working pipe increasing spring force, which in turn only by a corresponding increase in the contact pressure of the Bandes can be overcome to the pipe to be processed.
  • This has the consequence that the tube unilaterally with higher Contact pressure is applied by the abrasive belt and thereby in turn causes uneven grinding image.
  • Object of the present invention is to provide a Belt grinding machine, with low effort a wrap of about 180 degrees of a tube possible without significantly increasing it Drive power is required.
  • the drive unit 3 for example, an electric motor or a pneumatic motor is shown as a rectangle on the right side.
  • the supply line 5 Through the supply line 5, the corresponding energy (electricity or air) is supplied.
  • the drive unit 3 With a switch 7, the drive unit 3 can be switched on and off.
  • a driven pulley 9 At the front end of the drive unit 3 sits a driven pulley 9.
  • two pivot arms 11 and 13 are fixed to the drive unit 3, of which at least one is pivotally mounted about the rotation axis A in the vicinity of the driven pulley 9.
  • a handle 15 On firmly connected to the drive unit 3 arm 11 a handle 15 is further attached to which the operator holds the machine 1 with the second hand.
  • the pivot arm 13 is pushed away by a spreading spring 17 from the fixed arm 11 (arrow P).
  • deflecting wheels 19,21 At the ends of the two arms 11,13 deflecting wheels 19,21 are placed, which carry a circulating around these two pulleys 19,21 and the output roller 9 endless abras
  • the known grinding machine during of the grinding process i. between the two Umlenkmannn 19,21 wraps around the grinding belt 23 a tubular workpiece 25 at an angle beta of less as 180 °.
  • the wrap angle beta In relaxed state runs the run 26 of the Abrasive belt 23 tangentially from the deflection wheel 19 to the deflection wheel 21.
  • the wrap angle on the workpiece 25 is determined by the force F with which the Operator the belt grinder 1 against the Workpiece 25 presses, determined.
  • the first fixed, the guide wheel 19th supporting arm 11 may have a fixed length or, as in the example shown in Figures 2 and 3, as Teleskoparm be performed so that its length L, i. the distance of the axis of rotation of the roller 19 to the axis of rotation A of Output roller 9 and thus the distance to the deflection roller 21 for adaptation to the diameter D of the workpiece 25 is changeable.
  • the shortening takes place by the active pivoting of the pivot arm 13 with one hand of the operator counterclockwise about the axis of rotation of the guide wheel 29.
  • the guide wheel 21st consequently approaches the guide wheel 19 on one circular arc, which is only marginally of a Straight line deviates.
  • With increasing tilt angle of Schwenkarms 13 increases the angle between the Axle of the spring 17 and the toggle lever 33. This leads to a continuous decrease in the force of the spring 17 the pivot arm 13.
  • the tensile force remains the abrasive belt 23 is substantially unchanged and thereby the contact force in the entire looping area beta almost the same, regardless of whether the Diameter D of the workpiece is large or small.
  • Diameter D is the distance between the pulleys 19,21 already idling larger, accordingly is the Base distance for machining a smaller pipe (see Figure 3) already smaller before starting work.
  • the Setting the distance is done before the beginning of Processing.
  • the arrangement of the handle 15 on the pivotable arm 13 and also at the end of the boom 31 makes it possible to Pivoting movement of the arm 13 not only by the Relative movement of workpiece 25 to the machine. 1 but actively by the pivoting of the arm 13th to assist with the boom 31.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The band polishing machine has 2 deflection wheels (19,29) for the polishing band (23) attached at the ends of 2 relatively angled fixed arms (11,27) and a further deflection wheel (21) supported by a pivoted arm (13), with a tensioning spring (17) for the polishing band acting on a knee-lever arm (33), so that the force of the spring is reduced as the angular region of the workpiece (25) enclosed by the polishing band is increased.

Description

Gegenstand der Erfindung ist eine Bandschleifmaschine zum Schleifen von Rohren gemäss Oberbegriff des Patentanspruchs 1.The invention relates to a belt sander for Grinding of tubes according to the generic term of Patent claim 1.

Das Schleifen von Rohren, insbesondere Rohren aus Rostfreistählen mit einem Tellerschleifer oder mit einer Bandschleifmaschine mit gerade verlaufenden Trumen ist möglich. Die Arbeit führt zu einem unbefriedigenden Resultat. Mit diesen Maschinen entsteht kein kreisbogenförmiger Abtrag und dadurch eine Oberfläche, deren Schleifbild unregelmässig ist. Zudem ist es nicht möglich, mit einem Schleifmittel, das in einer Ebene bewegt wird, einen sauberen Schliff auf einem rohrförmigen Körper zu erzeugen, weil stets nur ein im wesentlichen linienförmiger Kontakt besteht.The grinding of pipes, especially pipes Stainless steels with a disc sander or with a Belt grinder with straight runs is possible. The work leads to an unsatisfactory Result. With these machines, no arcuate removal and thereby a surface, whose sanding pattern is irregular. Besides, it is not possible with an abrasive that is in one plane is moved, a clean cut on a tubular Body to produce, because always only one essentially there is linear contact.

Es ist aus der US-A 3,049,841 bereits ein Rohrschleifer bekannt, welcher mit einem Schleifband arbeitet, das von einer Abtriebsrolle am Antriebsmotor angetrieben um zwei beabstandet von dieser angeordnete Rollen umläuft, welche Rollen an den Enden zweier um die Drehachse der Abtriebsrolle relativ zueinander schwenkbarer Schenkel sitzen. Zum Bearbeiten eines Rohres wird letzteres gegen das Trum des Schleifbandes zwischen den beiden relativ zueinander beweglichen Rollen geführt und dadurch teilweise umschlungen. Die Umschlingung ist umso grösser, je kleiner der Spreizwinkel der beiden Schenkel ist. Eine die beiden Schenkel spreizende Feder hält das Schleifband zu jedem Zeitpunkt gespannt.It is already known from US-A 3,049,841 a pipe grinder, which with an abrasive belt that works from a driven pulley on Drive motor driven by two spaced from this arranged rollers revolving, which rollers at the ends two relative to the axis of rotation of the driven roller relative sit each other swivel leg. To edit of a pipe becomes the latter against the strand of the Abrasive belt between the two relative to each other led mobile rollers and thereby partially entwined. The wrap is the bigger, the smaller the spread angle of the two legs is. One the two Leg spreading spring holds the sanding belt to each Tense.

Nachteilig an dieser Vorrichtung ist die mit zunehmendem Umschlingungswinkel des Schleifbandes um das zu bearbeitende Rohr zunehmende Federkraft, welche wiederum nur durch eine entsprechende Erhöhung der Anpresskraft des Bandes an das zu bearbeitende Rohr überwunden werden kann. Dies hat zur Folge, dass das Rohr einseitig mit höherem Anpressdruck vom Schleifband beaufschlagt wird und dadurch ein wiederum ungleichmässiges Schleifbild bewirkt. Im weiteren sind die Kräfte, welche notwendig sind, um eine genügende Umschlingung des zu bearbeitenden Rohres zu erhalten, höher als für die Bearbeitung notwendige Auflagekraft des Schleifbandes. Sie führen zur schnellen Ermüdung der Bedienungsperson. Die hohen Anpresskräfte, welche für die grosse Umschlingung nötig sind, bewirken andererseits einen entsprechend grossen Widerstand am Schleifband, und als Folge wird eine erhöhte Motorleistung für den Antrieb notwendig, was zu einer Erhöhung des Gesamtgewichts der Schleifmaschine führt. The disadvantage of this device is the increasing Wrap angle of the sanding belt around this working pipe increasing spring force, which in turn only by a corresponding increase in the contact pressure of the Bandes can be overcome to the pipe to be processed. This has the consequence that the tube unilaterally with higher Contact pressure is applied by the abrasive belt and thereby in turn causes uneven grinding image. in the others are the forces that are necessary to one sufficient looping of the pipe to be machined received, higher than necessary for the processing Bearing force of the sanding belt. They lead to fast Fatigue of the operator. The high contact pressure, which are necessary for the large wrap, effect on the other hand, a correspondingly large resistance on Sanding belt, and as a result, increased engine power necessary for the drive, resulting in an increase of the Total weight of the grinding machine leads.

Aufgabe der vorliegenden Erfindung ist die Schaffung einer Bandschleifmaschine, bei der mit geringem Kraftaufwand eine Umschlingung von etwa 180 Winkelgraden eines Rohres möglich ist, ohne dass dabei eine wesentlich erhöhte Antriebsleistung erforderlich ist.Object of the present invention is to provide a Belt grinding machine, with low effort a wrap of about 180 degrees of a tube possible without significantly increasing it Drive power is required.

Gelöst wird diese Aufgabe durch eine Bandschleifmaschine gemäss den Merkmalen des Patentanspruchs 1.This problem is solved by a belt sander according to the features of patent claim 1.

Es gelingt durch die Anordnung des Schwenkhebels an einem feststehenden Hebel, die beim Auffahren auf das Werkstück für die Umschlingung notwendige Schleifbandlänge ohne wesentliche Erhöhung der Bandspannung zur Verfügung zu stellen. Zusätzlich unterstützt wird diese annähernd lineare Bandspannung durch die Verwendung eines Kniehebels, durch welchen die Kraft der Feder einen im wesentlichen linearen Verlauf erhält. Durch die Verstellbarkeit der Länge des ersten feststehenden Armes kann der Abstand zwischen der Rolle am Ende des schwenkbaren Hebelarms und der Rolle auf dem ersten feststellbaren Hebel an den Durchmesser des zu bearbeitenden Werkstücks angepasst werden. Die Anordnung des Handgriffs am beweglichen Arm am Ende eines Hebels erlaubt es der Bedienungsperson, den beweglichen Arm aktiv zu schwenken, ohne die Auflagekraft des Schleifbandes auf das Werkstück wesentlich zu erhöhen. It is possible by the arrangement of the pivot lever on a fixed lever when driving on the workpiece sanding belt length required for wrapping without substantial increase in belt tension available too put. In addition, this is approximately supported Linear belt tension through the use of a Knee lever, through which the force of the spring in the Maintains significant linear course. By the Adjustability of the length of the first fixed arm can the distance between the roll at the end of the pivoting lever arm and the roller on the first lockable lever to the diameter of the be adapted to machining workpiece. The order of the handle on the movable arm at the end of a lever allows the operator to actively move the movable arm to swing, without the contact force of the sanding belt on to increase the workpiece significantly.

Anhand eines illustrierten Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigen

Figur 1
eine schematische Darstellung der bekannten Bandschleifmaschine mit zwei v-förmig angeordneten relativ zueinander verschwenkbaren Schwenkarmen,
Figur 2
eine Seitenansicht der erfindungsgemässen Schleifmaschine ausser Eingriff mit dem Werkstück und
Figur 3
eine Seitenansicht der erfindungsgemässen Schleifmaschine in Eingriff mit dem Werkstück.
Reference to an illustrated embodiment, the invention is explained in detail. Show it
FIG. 1
a schematic representation of the known belt grinding machine with two v-shaped pivot arms arranged pivotable relative to each other,
FIG. 2
a side view of the inventive grinding machine out of engagement with the workpiece and
FIG. 3
a side view of the inventive grinding machine in engagement with the workpiece.

In der in Figur 1 dargestellten aus dem Stand der Technik bekannten Bandschleifmaschine 1 ist auf der rechten Seite das Antriebsaggregat 3, z.B. ein Elektromotor oder ein Pneumatikmotor als Rechteck dargestellt. Durch die Zuleitung 5 wird die entsprechende Energie (Elektrizität oder Luft) zugeführt. Mit einem Schalter 7 kann das Antriebsaggregat 3 ein- und ausgeschaltet werden.
Am stirnseitigen Ende des Antriebsaggregates 3 sitzt eine Abtriebsrolle 9. Im weiteren sind am Antriebsaggregat 3 zwei Schwenkarme 11 und 13 befestigt, von denen mindestens einer um die Drehachse A in der Nähe der Abtriebsrolle 9 schwenkbar gelagert ist. Am fest mit dem Antriebsaggregat 3 verbundenen Arm 11 ist weiter ein Handgriff 15 befestigt, an dem die Bedienungsperson die Maschine 1 mit der zweiten Hand festhält. Der Schwenkarm 13 wird durch eine spreizend wirkende Feder 17 vom feststehenden Arm 11 weggedrückt (Pfeil P). An den Enden der beiden Arme 11,13 sind Umlenkräder 19,21 aufgesetzt, welche ein um diese beiden Umlenkräder 19,21 und die Abtriebsrolle 9 umlaufendes endloses Schleifband 23 tragen.In the known from the prior art belt grinding machine 1 shown in Figure 1, the drive unit 3, for example, an electric motor or a pneumatic motor is shown as a rectangle on the right side. Through the supply line 5, the corresponding energy (electricity or air) is supplied. With a switch 7, the drive unit 3 can be switched on and off.
At the front end of the drive unit 3 sits a driven pulley 9. In addition, two pivot arms 11 and 13 are fixed to the drive unit 3, of which at least one is pivotally mounted about the rotation axis A in the vicinity of the driven pulley 9. On firmly connected to the drive unit 3 arm 11 a handle 15 is further attached to which the operator holds the machine 1 with the second hand. The pivot arm 13 is pushed away by a spreading spring 17 from the fixed arm 11 (arrow P). At the ends of the two arms 11,13 deflecting wheels 19,21 are placed, which carry a circulating around these two pulleys 19,21 and the output roller 9 endless abrasive belt 23.

In der Figur 1 ist die bekannte Schleifmaschine während des Schleifvorgangs dargestellt, d.h. zwischen den beiden Umlenkrädern 19,21 umschlingt das Schleifband 23 ein rohrförmiges Werkstück 25 in einem Winkel beta von weniger als 180°. In entspanntem Zustand verläuft das Trum 26 des Schleifbandes 23 tangential vom Umlenkrad 19 zum Umlenkrad 21. Durch den Umschlingungswinkel beta werden die beiden Umlenkräder 19,21 gegen die Kraft der Feder 17 gegeneinandergeführt. Der Umschlingungswinkel am Werkstück 25 wird durch die Kraft F, mit welcher die Bedienungsperson die Bandschleifmaschine 1 gegen das Werkstück 25 presst, bestimmt.In the figure 1, the known grinding machine during of the grinding process, i. between the two Umlenkrädern 19,21 wraps around the grinding belt 23 a tubular workpiece 25 at an angle beta of less as 180 °. In relaxed state runs the run 26 of the Abrasive belt 23 tangentially from the deflection wheel 19 to the deflection wheel 21. By the wrap angle beta are the two Deflection wheels 19,21 against the force of the spring 17th against each other out. The wrap angle on the workpiece 25 is determined by the force F with which the Operator the belt grinder 1 against the Workpiece 25 presses, determined.

In der erfindungsgemässen Ausgestaltung der Bandschleifmaschine 1 gemäss den Figuren 2 und 3, in welcher für gleiche Teile die gleichen Bezeichnungen und Bezugszeichen wie in Figur 1 benutzt werden, sitzt am Ende des Antriebsaggregats 3 wiederum die Abtriebsrolle 9, und es ist der feststehende erste, das Umlenkrad 19 tragende Arm 11 daran befestigt. Der schwenkbare Arm 13, welcher das Umlenkrad 21 trägt, ist, im Gegensatz zum Stand der Technik, nicht nahe am Antriebsaggregat 3, sondern am Ende eines mit diesem ebenfalls fest verbundenen zweiten Arms 27 angelenkt und um die Drehachse des Umlenkrades 21 schwenkbar. Am Ende dieses zweiten Armes ist ein zusätzliches Umlenkrad 29 befestigt. Der Handgriff 15 ist in der erfindungsgemässe Ausführung am schwenkbaren Arm 13 aufgesetzt. Dieser Handgriff 15 sitzt am Ende eines winkelig am Schwenkarm 13 befestigten Auslegers 31. Im weiteren ist am Schwenkarm 13 ein Kniehebelarm 33 befestigt oder ausgebildet, an dessen Ende die Feder 17 angreift. Das zweite Ende der Feder 17 ist am zweiten feststehenden Arm 27 befestigt. In einer bevorzugten Ausgestaltung der Erfindung erstreckt sich der Kniehebelarm 33 im wesentlichen rechtwinklig zur Achse F der Feder 17. Der erste feststehende, das Umlenkrad 19 tragende Arm 11 kann eine feste Länge aufweisen oder, wie im Beispiel gemäss den Figuren 2 und 3 dargestellt, als Teleskoparm ausgeführt sein, so dass dessen Länge L, d.h. der Abstand der Drehachse der Rolle 19 zur Drehachse A der Abtriebsrolle 9 und damit auch der Abstand zur Umlenkrolle 21 zwecks Anpassung an den Durchmesser D des Werkstücks 25 veränderbar ist.In the inventive embodiment of Belt grinding machine 1 according to Figures 2 and 3, in which for identical parts the same designations and Reference numerals as used in Figure 1, sitting at the end of the drive unit 3, in turn, the output roller 9, and it is the fixed first, the guide wheel 19 bearing Arm 11 attached to it. The pivotable arm 13, which the deflection wheel 21 carries is, in contrast to the state of Technology, not close to the drive unit 3, but at the end one with this also firmly connected second arm 27 articulated and about the axis of rotation of the guide wheel 21st pivotable. At the end of this second arm is a attached additional deflecting 29. The handle 15 is in the inventive embodiment on the pivotable arm thirteenth placed. This handle 15 sits at the end of a angularly attached to the pivot arm 13 boom 31. Im another is on the pivot arm 13 a toggle lever 33rd attached or formed, at the end of the spring 17th attacks. The second end of the spring 17 is on the second fixed arm 27 attached. In a preferred Embodiment of the invention extends the Toggle arm 33 substantially at right angles to the axis F the spring 17. The first fixed, the guide wheel 19th supporting arm 11 may have a fixed length or, as in the example shown in Figures 2 and 3, as Teleskoparm be performed so that its length L, i. the distance of the axis of rotation of the roller 19 to the axis of rotation A of Output roller 9 and thus the distance to the deflection roller 21 for adaptation to the diameter D of the workpiece 25 is changeable.

Im folgenden wird die Funktionsweise der erfindungsgemässen Bandschleifmaschine 1 näher beschrieben. In der Leerlaufposition gemäss Figur 2 erstreckt sich das Trum 26 tangential vom Umlenkrad 21 zum Umlenkrad 19. Das Schleifband 23 wird in dieser Stellung von der Feder 17 zwischen den vier Umlenkrädern 9,19,21,29 gespannt gehalten. Senkt nun die Bedienungsperson, welche die Schleifmaschine 1 mit der einen Hand am Antriebsaggregat 3 und mit der andern am Haltegriff 15 festhält, das Schleifband 23 von oben auf das rohrförmige Werkstück 25, so wird das anfänglich geradlinig verlaufende Trum 26 um das Werkstück 25 herumgeführt (Umschlingungswinkel beta). Durch den bogenförmigen Verlauf des Schleifbandes 23 wird der Abstand zwischen den beiden Umlenkrädern 19 und 21 verkürzt. Die Verkürzung erfolgt durch das aktive Schwenken des Schwenkarms 13 mit der einen Hand der Bedienungsperson im Gegenuhrzeigersinn um die Drehachse des Umlenkrads 29. Das Umlenkrad 21 nähert sich folglich dem Umlenkrad 19 auf einer kreisbogenförmigen Bahn, die nur unwesentlich von einer Geraden abweicht. Mit zunehmendem Schwenkwinkel des Schwenkarms 13 vergrössert sich der Winkel zwischen der Achse der Feder 17 und dem Kniehebelarm 33. Dies führt zu einer kontinuierlichen Abnahme der Kraft der Feder 17 auf den Schwenkarm 13. Trotz der Umlenkung des Schleifbandes 23 um annähernd 180 Winkelgrade, bleibt die Zugkraft auf dem Schleifband 23 im wesentlichen unverändert und dadurch die Anpresskraft im gesamten Umschlingungsbereich beta annähernd gleich, und zwar unabhängig davon, ob der Durchmesser D des Werkstücks gross oder klein ist. Diese Unabhängigkeit wird dadurch ermöglicht, dass das Umlenkrad 19 am ersten feststehenden Arm 11 bezüglich dem Umlenkrad 21 einstellbar ist. Bei der Bearbeitung eines grösseren Durchmessers D ist der Abstand zwischen den Umlenkrädern 19,21 bereits im Leerlauf grösser, entsprechend ist der Grundabstand für die Bearbeitung eines kleineren Rohres (siehe Figur 3) bereits vor Beginn der Arbeit kleiner. Die Einstellung des Abstands erfolgt vor dem Beginn der Bearbeitung.The following is the operation of the inventive belt grinding machine 1 closer described. In the idle position according to FIG. 2 the strand 26 extends tangentially from the guide wheel 21 to Deflection wheel 19. The sanding belt 23 is in this position from the spring 17 between the four guide wheels 9,19,21,29 kept excited. Now lower the operator, which the grinding machine 1 with one hand on Drive unit 3 and with the other on the handle 15 holds, the abrasive belt 23 from above on the tubular Workpiece 25, so this is initially straight extending Trum 26 led around the workpiece 25 (Wrap angle beta). By the arcuate Course of the abrasive belt 23, the distance between the shortened both pulleys 19 and 21. The shortening takes place by the active pivoting of the pivot arm 13 with one hand of the operator counterclockwise about the axis of rotation of the guide wheel 29. The guide wheel 21st consequently approaches the guide wheel 19 on one circular arc, which is only marginally of a Straight line deviates. With increasing tilt angle of Schwenkarms 13 increases the angle between the Axle of the spring 17 and the toggle lever 33. This leads to a continuous decrease in the force of the spring 17 the pivot arm 13. Despite the deflection of the sanding belt 23 by approximately 180 degrees, the tensile force remains the abrasive belt 23 is substantially unchanged and thereby the contact force in the entire looping area beta almost the same, regardless of whether the Diameter D of the workpiece is large or small. These Independence is made possible by the fact that the deflection wheel 19 on the first fixed arm 11 with respect to the guide wheel 21 is adjustable. When working on a bigger one Diameter D is the distance between the pulleys 19,21 already idling larger, accordingly is the Base distance for machining a smaller pipe (see Figure 3) already smaller before starting work. The Setting the distance is done before the beginning of Processing.

Die Anordnung des Handgriffs 15 am schwenkbaren Arm 13 und zudem am Ende des Auslegers 31 ermöglicht es, die Schwenkbewegung des Arms 13 nicht nur durch die Relativbewegung von Werkstück 25 zur Maschine 1 auszulösen, sondern aktiv durch das Schwenken des Arms 13 mit dem Ausleger 31 zu unterstützen.The arrangement of the handle 15 on the pivotable arm 13 and also at the end of the boom 31 makes it possible to Pivoting movement of the arm 13 not only by the Relative movement of workpiece 25 to the machine. 1 but actively by the pivoting of the arm 13th to assist with the boom 31.

Claims (3)

  1. Belt grinding machine (1) for the grinding of tubes (25), including a drive unit (3) with a driven roller (9) for the driving of a grinding belt (23), which is intended to circulate in an endless manner, two guide wheels (19, 21), which are disposed at a spacing from the driven roller (9), one of said guide wheels is disposed at the end of a spring-loaded pivotal arm (13), which is pivotable about an axis of rotation (A), and the other guide wheel is disposed at the end of a first arm (11), which is fixedly connected to the drive unit (3), and a spring (17), which engages the pivotal arm (13) to tension the grinding belt (23) and force apart the pivotal arm (13), characterised in that an outwardly projecting boom (31) is disposed on the pivotal arm (13) with a lifting handle (15), with which the pivotal arm (13) and the guide wheel (21) can be brought forward towards the guide wheel (19), which is supported at the end of the arm (11) connected to the drive unit (3).
  2. Belt grinding machine according to claim 1, characterised in that the spring (17) engages a toggle arm (33), which is fixedly connected to the pivotable arm (13), wherein the toggle arm (33) lies at right angles to the spring axis before the grinding belt (23) contacts the workpiece (25), such that as the pivotal arm (13) pivots further and the workpiece (25) becomes increasingly wrapped around by the grinding belt (23), the angle between the toggle arm (33) and the spring axis increases and thereby the force of the spring (17) on the pivotal arm (13) and the tensional force onto the grinding belt is reduced.
  3. Belt grinding machine according to one of claims 1 or 2, characterised in that the length (L) of the fixed first arm (11) is adjustable in the direction of the guide wheel (21), which is secured to the pivotal arm (13), for setting and adjusting the distance between the two guide wheels (19, 21).
EP00811127A 2000-01-03 2000-11-27 Belt grinding machine for grinding of tubing Expired - Lifetime EP1112811B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH42000 2000-01-03
CH42000 2000-01-03

Publications (3)

Publication Number Publication Date
EP1112811A2 EP1112811A2 (en) 2001-07-04
EP1112811A3 EP1112811A3 (en) 2003-10-29
EP1112811B1 true EP1112811B1 (en) 2005-04-27

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Application Number Title Priority Date Filing Date
EP00811127A Expired - Lifetime EP1112811B1 (en) 2000-01-03 2000-11-27 Belt grinding machine for grinding of tubing

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EP (1) EP1112811B1 (en)
AT (1) ATE294047T1 (en)
DE (1) DE50010157D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011002462U1 (en) 2011-02-07 2011-04-28 Metabowerke Gmbh Pipe belt grinding unit
DE102011117412A1 (en) * 2011-11-02 2013-05-02 Holzer Gmbh Tube band grinding device for use in hand-held machine i.e. angle grinding machine, for surface treatment of tubular workpieces, has movably mounted guide roller receiving endless belt and mounted between two bearing rollers
DE102012219638A1 (en) 2012-10-26 2014-04-30 Metabowerke Gmbh Pipe tape sharpening unit for pipe tape grinder and angle sander, has one grip portion that is not reassembled with other grip portion which is located at side of lever or handle
WO2023106905A1 (en) * 2022-02-07 2023-06-15 Ozinskis Olegs A machining device

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004016143U1 (en) 2004-10-13 2006-03-16 C. & E. Fein Gmbh belt sander
DE102004050528B4 (en) * 2004-10-16 2008-08-21 Harald Zahn Gmbh Belt sander
HRPK20070014B3 (en) * 2007-01-12 2010-03-31 Brkanović Renko Articulated device for grinding and polishing of spherical surfaces
DE102007051047B4 (en) 2007-10-16 2023-03-23 Nagel Maschinen- Und Werkzeugfabrik Gmbh Press-on device for finishing belt and device and method for finishing peripheral surfaces on cylindrical workpiece sections
DE102011104010A1 (en) 2011-06-10 2012-12-13 Gerd Eisenblätter Gmbh Belt grinding device for grinding hollow profiled pipe, has two deflection elements spaced apart from each other, moveably coupled with each other by coupling element, and moveable with respect to other deflecting element
CN103506922B (en) * 2013-08-01 2016-12-28 浙江精一重工有限公司 A kind of axial workpiece irregular periphery automatic polishing method
CN106737074B (en) * 2016-11-28 2018-08-14 南安市达腾商务服务有限公司 A kind of building materials steel pipe derusting equipment with elastic device
CN106926094A (en) * 2017-04-06 2017-07-07 宁波辛迪自动化科技有限公司 A kind of belt sander device
DE102017008394A1 (en) * 2017-09-07 2019-03-07 Lubas Maschinen Gmbh Grinding of disc knives
CN108296946A (en) * 2018-03-19 2018-07-20 广东恒合信管业科技有限公司 A kind of belt grinder for tubing
CN108527086A (en) * 2018-07-03 2018-09-14 东莞理工学院 A kind of spray sand type revolving body seal groove polishing machine
CN109514361B (en) * 2018-11-14 2020-05-12 佛山市康海钢制品有限公司 Welding seam polishing equipment for stainless steel pipes
CN109202737B (en) * 2018-11-14 2019-08-20 泰州市昌盛波纹管有限公司 A kind of weld grinding technique of stainless steel welded pipe
CN109500667B (en) * 2019-01-16 2021-06-25 安徽森米诺农业科技有限公司 Continuous grinding equipment for slender metal pipe fittings
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2560102A (en) * 1946-10-24 1951-07-10 Guinn J Edwin Sander
US3049841A (en) * 1959-07-13 1962-08-21 Amos E Jackson Portable sanders
US3566549A (en) * 1969-01-21 1971-03-02 James A Britton Flexible all purpose drill attachment
US4603510A (en) * 1984-08-27 1986-08-05 Rasmussen Aaron P Multiple position belt grinder

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011002462U1 (en) 2011-02-07 2011-04-28 Metabowerke Gmbh Pipe belt grinding unit
DE102011076003A1 (en) 2011-02-07 2012-08-09 Metabowerke Gmbh Pipe belt grinding unit
WO2012107453A1 (en) 2011-02-07 2012-08-16 Metabowerke Gmbh Pipe belt sanding unit
DE102011117412A1 (en) * 2011-11-02 2013-05-02 Holzer Gmbh Tube band grinding device for use in hand-held machine i.e. angle grinding machine, for surface treatment of tubular workpieces, has movably mounted guide roller receiving endless belt and mounted between two bearing rollers
DE102012219638A1 (en) 2012-10-26 2014-04-30 Metabowerke Gmbh Pipe tape sharpening unit for pipe tape grinder and angle sander, has one grip portion that is not reassembled with other grip portion which is located at side of lever or handle
DE102012219638B4 (en) * 2012-10-26 2014-09-11 Metabowerke Gmbh Pipe belt grinding unit
WO2023106905A1 (en) * 2022-02-07 2023-06-15 Ozinskis Olegs A machining device

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DE50010157D1 (en) 2005-06-02
EP1112811A2 (en) 2001-07-04
EP1112811A3 (en) 2003-10-29
ATE294047T1 (en) 2005-05-15

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