EP0519093A1 - Procedure of and device for deburring of pipe end faces - Google Patents

Procedure of and device for deburring of pipe end faces Download PDF

Info

Publication number
EP0519093A1
EP0519093A1 EP91109863A EP91109863A EP0519093A1 EP 0519093 A1 EP0519093 A1 EP 0519093A1 EP 91109863 A EP91109863 A EP 91109863A EP 91109863 A EP91109863 A EP 91109863A EP 0519093 A1 EP0519093 A1 EP 0519093A1
Authority
EP
European Patent Office
Prior art keywords
pipe
grinding
face
deburring
tube
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
EP91109863A
Other languages
German (de)
French (fr)
Other versions
EP0519093B1 (en
Inventor
Robert Löser
Adalbert Beckmann
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
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP91109863A priority Critical patent/EP0519093B1/en
Priority to AT91109863T priority patent/ATE126466T1/en
Priority to DE59106275T priority patent/DE59106275D1/en
Publication of EP0519093A1 publication Critical patent/EP0519093A1/en
Application granted granted Critical
Publication of EP0519093B1 publication Critical patent/EP0519093B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/007—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for end faces of tubes
    • 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

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 5.
  • burrs on the pipe ends are inevitable.
  • many pipes especially hydraulic pipes in aircraft construction
  • the pipe end faces be burr-free, i.e. sharp-edged and at right angles to the pipe longitudinal axis.
  • the reason for this requirement is that when such pipes are bluntly flanged, no unevenness may occur at the transitions which cause greater turbulence in the hydraulic fluid. Burrs left standing also harbor the risk that they will be separated during operation and ultimately lead to malfunctions in the hydraulic system.
  • the object of the present invention is to provide a deburring method with which in particular the saw burrs on the end faces of thin metal tubes can be removed in a simple manner.
  • burrs on the inside of the pipe are removed by grinding the pipe end face from the inside out, so that a shaft-edged, burr-free cut is always achieved.
  • a secondary grinding burr thus formed is completely shifted to the outside and is subsequently machined, for example by means of an elastically bonded, deformable grinding tool attached to the outside, the outer edge of the pipe being used is slightly rounded.
  • the result is an exactly right-angled pipe with a sharp-edged, burr-free inner edge and a slightly rounded, burr-free outer edge.
  • a particular advantage of the invention is that burrs on the tube faces are reliably eliminated even with thin-walled and very long steel, stainless steel or titanium tubes of small diameter and thus low inherent rigidity.
  • the machining accuracy is high and damage to the pipe by hooking the machining tool into a strongly adhering burr is not possible.
  • the method according to the invention can be carried out inexpensively and fully automatically.
  • Fig. 1 shows a greatly enlarged longitudinal section of a pipe 1, on the front side of which both ridges 1a are located on the inside and outside of the pipe, which burrs have arisen due to a saw cut or by cutting the pipe to length due to another separation process. 1 shows the pipe 1 to the right after the burrs have been removed by the method according to the invention.
  • the tube 1 to be deburred is rotatably mounted on a carrying device 2.
  • the carrying device 2 can for example consist of two there are parallel rows of interlocking rollers which form a conveyor trough between them.
  • the tube 1 is set in rotation by a pressure device, which consists, for example, of a friction wheel 3.
  • a pressure device which consists, for example, of a friction wheel 3.
  • the grinding belt 5 is adjusted by means of a contact disc 6 of small diameter with exact adjustability of the contact line so that the grinding process takes place in the area of a zone 7 between the pipe central axis 8 and the pipe wall, the running direction 5a of the grinding belt 5 being chosen so that the grinding direction from the inside of the pipe to the outside of the pipe.
  • the end face of the pipe and the grinding belt 5 oscillate in the transverse direction relative to one another, with short pipes the device can oscillate, with longer pipes the grinding belt oscillates.
  • the grinding belt simultaneously grinds the pipe precisely at right angles and also removes a strongly adhering saw burr.
  • the crucial point with the present method is that the poorly accessible ridge on the inner edge of the tube face without residues, i.e. is removed without the formation of secondary burrs, and a secondary grinding burr is only formed on the outer edge of the pipe end face. This can be removed using known means, for example an elastic grinding wheel or a brush.
  • FIG. 3 shows the pipe to be processed 1, the is rotatably mounted on two rows of support rollers 2.
  • the friction wheel 3 is arranged above the tube 1 and is rotated by a drive 9.
  • the speed of the friction wheel 3 can optionally be adjustable.
  • the friction wheel 3 is brought into contact with the tube 1 by means of a lifting cylinder 10 (FIG. 3 shows the raised position of the friction wheel 3).
  • the friction wheel advantageously consists of an elastic material, for example rubber or plastic.
  • the axis of rotation 4 of the friction wheel 3 can be adjusted with respect to the central axis 8 of the tube 1 by means of an adjusting cylinder 11.
  • the tube 1 is either conveyed against the grinding belt 5 of a grinding device 16, or is withdrawn.
  • the grinding belt 5, which is arranged on the end face of the tube 1, runs e.g. Via the contact disk 6 and two deflection disks 12 and 13, one of which is driven and the second tensions and centers the belt.
  • the grinding belt 5 with the disks 6, 12 and 13 is arranged vertically, but it is also one other arrangement possible. It is crucial that the grinding belt 5, guided through the contact disk 6, comes into contact with the end face of the tube 1 below the central axis 8 in accordance with the method described above.
  • a lifting device 14 is provided in FIG. 3 for setting the contact zone 7 (see FIG. 2).
  • a drive device 18 is provided under the support rollers 2, with which the tube 1 oscillates in the transverse direction to the grinding belt 5 is moved. With very long pipes, it may be more practical to instead set the grinder 16 in a transverse motion.
  • the pressure time by the friction wheel 3 is controlled by means of a timer.
  • the required processing time and the amount of pressure depend on the pipe diameter and the wall thickness as well as on the pipe material.
  • a similar grinding device 16 and a further grinding tool 19 can be arranged on the other side of the carrying device with the carrying rollers 2. so that the machining first takes place at one end of the pipe and then at the other.
  • a pipe grinding system according to the invention can have two substantially parallel pipe carrying devices, on the opposite ends of which a grinding device 16 and a grinding tool 19 are arranged. Deburring on the right and deburring on the left are thus carried out in different conveyor troughs, the entire system being linked in such a way that machining to the right and left takes place almost simultaneously.
  • the deburring stations are stationary and the workpieces are transported from right to left or vice versa before, during and after the transfer from channel to channel.
  • Centerless external cylindrical grinding with suitable tools following internal deburring can completely replace the tool described in the text under 19 and at the same time improve the pipe surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Abstract

The invention relates to a procedure and a device for the deburring of pipe end faces by machining. In the process, the pipe (1) to be deburred is rotated about a longitudinal axis (8) and pressed with its end face against a grinding belt (5) in such a way that the grinding direction is from the inside of the pipe to the outside of the pipe. As a result, a burr-free inner edge and secondary grinding burr on the outer edge are produced. This outer burr is then removed by the known technique of an elastic grinding tool and at the same time slight edge radiusing is produced. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff von Anspruch 1 bzw. eine Vorrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff des Anspruchs 5.The invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 5.

Beim Ablängen oder Absägen von Rohren ist Gratbildung an den Rohrstirnseiten unvermeidlich. Für viele Rohre, (insbesondere Hydraulikrohre im Flugzeugbau) besteht die Anforderung, daß die Rohrstirnseiten gratfrei, d.h. scharfkantig und im rechten Winkel zur Rohrlängsachse verlaufen. Der Grund für dieses Erfordernis liegt darin, daß beim stumpfen Verflanschen solcher Rohre an den Übergängen keine Unebenheiten auftreten dürfen, die stärkere Turbulenzen in der Hydraulikflüssigkeit verursachen. Stehengebliebene Grate bergen darüber hinaus die Gefahr, daß diese im Laufe des Betriebs abgetrennt werden und schließlich zu Funktionsstörungen im Hydrauliksystem führen.When cutting or sawing pipes, burrs on the pipe ends are inevitable. For many pipes (especially hydraulic pipes in aircraft construction) there is a requirement that the pipe end faces be burr-free, i.e. sharp-edged and at right angles to the pipe longitudinal axis. The reason for this requirement is that when such pipes are bluntly flanged, no unevenness may occur at the transitions which cause greater turbulence in the hydraulic fluid. Burrs left standing also harbor the risk that they will be separated during operation and ultimately lead to malfunctions in the hydraulic system.

Eine weitere Anforderung an Rohre für die genannte Verwendung besteht darin, daß die Außenkanten der Rohrstirnseiten leicht abgerundet sind, damit während der Handhabung, insbesondere bei der Montage, mit Schneidringdichtung ein störungsfreies Arbeiten möglich ist, keine Verletzungsgefahr besteht, und keine abbrechenden Grate ins Rohrinnere gelangen können.Another requirement for pipes for the use mentioned is that the outer edges of the pipe end faces are slightly rounded, so that trouble-free operation is possible during handling, in particular during assembly, with a cutting ring seal, there is no risk of injury, and no breaking burrs get into the inside of the pipe can.

Bei der Bearbeitung von langen Rohren, deren Außendurchmesser im Bereich von etwa 5 mm bis 30 mm liegt, besteht bei herkömmlichen Bearbeitungsmethoden ein erhebliches Problem, die oben genannten Anforderungen zu erfüllen. Da solche Rohre oft keinen exakt kreisförmigen Querschnitt haben, besteht insbesondere bei relativ dünnwandigen Rohren das Problem, daß ein Entgraten durch spanabhebende Bearbeitung, beispielsweise durch Drehen, nicht möglich ist, weil keine ausreichend genaue Zentrierung der Rohrlängsachse zu erreichen ist. Außerdem besteht die Gefahr, daß bei einem stark anhaftendem Grat die Bearbeitungsschneide des Werkzeugs in dem Grat einhakt und dabei durch Einreißen den Stirnbereich des Rohrs beschädigt.When processing long pipes, the outside diameter of which is in the range of approximately 5 mm to 30 mm, there is a considerable problem with conventional processing methods in meeting the above-mentioned requirements. Because such pipes often do not have an exactly circular cross-section have, especially with relatively thin-walled pipes, the problem that deburring by machining, for example by turning, is not possible because the pipe longitudinal axis cannot be centered sufficiently accurately. There is also the risk that, in the case of a strongly adhering burr, the cutting edge of the tool will hook into the burr and thereby damage the end region of the tube by tearing.

Ein anderes Verfahren zum Entgraten, nämlich mit HIlfe einer rotierenden Bürste, vor der das Rohr mit seiner Stirnseite quer hin- und herbewegt und gleichzeitig um seine Längsachse rotiert wird, ist bei solchen geringen Rohrdurchmessern nicht mehr einsetzbar, insbesondere kann auf diese Weise der Rohrinnenrand nicht entgratet werden.Another method for deburring, namely with the help of a rotating brush, in front of which the tube is moved back and forth with its end face and at the same time rotated about its longitudinal axis, can no longer be used with such small tube diameters, in particular the inner edge of the tube cannot be used in this way be deburred.

Angesichts der genannten Probleme besteht die Aufgabe der vorliegenden Erfindung darin, ein Entgratungsverfahren zu schaffen, mit dem insbesondere die Sägegrate an den Stirnflächen dünner Metallrohre auf einfache Weise entfernt werden können.In view of the problems mentioned, the object of the present invention is to provide a deburring method with which in particular the saw burrs on the end faces of thin metal tubes can be removed in a simple manner.

Diese Aufgabe wird durch ein Verfahren gemäß Anspruch 1 bzw. durch eine Vorrichtung gemäß Anspruch 5 gelöst. Die jeweiligen Unteransprüche enthalten vorteilhafte Weiterbildungen.This object is achieved by a method according to claim 1 or by a device according to claim 5. The respective subclaims contain advantageous developments.

Kennzeichend für das erfindungsgemäße Verfahren ist, daß durch Schleifen der Rohrstirnseite von innen nach außen die Grate an der Rohrinnenkante abgetragen werden, so daß immer ein schaftkantiger, gratfreier Schliff erreicht wird. Ein dabei gebildeter Sekundärschleifgrat verlagert sich komplett nach außen und wird anschließend z.B. mittels eines außen angesetzten, elastisch gebundenen, deformierbaren Schleifwerkzeugs zerspant, wobei die Rohraußenkante leicht abgerundet wird. Das Ergebnis ist ein exakt rechtwinklig geschliffenes Rohr mit scharfkantiger, gratfreier Innenkante und leicht verrundeter, gratfreier Außenkante.It is characteristic of the method according to the invention that the burrs on the inside of the pipe are removed by grinding the pipe end face from the inside out, so that a shaft-edged, burr-free cut is always achieved. A secondary grinding burr thus formed is completely shifted to the outside and is subsequently machined, for example by means of an elastically bonded, deformable grinding tool attached to the outside, the outer edge of the pipe being used is slightly rounded. The result is an exactly right-angled pipe with a sharp-edged, burr-free inner edge and a slightly rounded, burr-free outer edge.

Ein besonderer Vorteil der Erfindung besteht darin, daß Grate an den Rohrstirnseiten auch bei dünnwandigen und sehr langen Stahl-, Edelstahl- oder Titanrohren geringen Durchmessers und damit geringer Eigensteifigkeit sicher beseitigt werden. Die Bearbeitungsgenauigkeit ist hoch und eine Beschädigung des Rohrs durch Einhaken des Bearbeitungswerkzeugs in einen stark anhaftenden Grat ist nicht möglich. Zudem läßt sich das erfindungsgemäße Verfahren kostengünstig und vollautomatisch durchführen.A particular advantage of the invention is that burrs on the tube faces are reliably eliminated even with thin-walled and very long steel, stainless steel or titanium tubes of small diameter and thus low inherent rigidity. The machining accuracy is high and damage to the pipe by hooking the machining tool into a strongly adhering burr is not possible. In addition, the method according to the invention can be carried out inexpensively and fully automatically.

Im folgenden wird die Erfindung anhand der beigefügten Zeichnungen näher erläutert. Es zeigen:

Fig. 1
die Grate an einer Rohrstirnseite nach einem Sägeschnitt und die Form der Rohrstirnseite nach der Bearbeitung gemäß dem erfindungsgemäßen Verfahren;
Fig. 2
ein Schema zur Erläuterung des erfindungsgemäßen Entgratungsverfahrens; und
Fig. 3
ein Ausführungsbeispiel einer Entgratungsvorrichtung gemäß der Erfindung.
The invention is explained in more detail below with reference to the accompanying drawings. Show it:
Fig. 1
the burrs on a tube face after a saw cut and the shape of the tube face after processing according to the method of the invention;
Fig. 2
a diagram for explaining the deburring method according to the invention; and
Fig. 3
an embodiment of a deburring device according to the invention.

Fig. 1 zeigt stark vergrößert den Längsschnitt eines Rohres 1, an dessen Stirnseite sowohl am Rohrinnenals auch am Rohraußenrand sich Grate 1a befinden, die durch einen Sägeschnitt oder durch Ablängen des Rohres aufgrund eines anderen Trennverfahrens entstanden sind. Rechts daneben zeigt Fig. 1 das Rohr 1, nachdem die Grate mittels des erfindungsgemäßen Verfahrens abgetragen wurden.Fig. 1 shows a greatly enlarged longitudinal section of a pipe 1, on the front side of which both ridges 1a are located on the inside and outside of the pipe, which burrs have arisen due to a saw cut or by cutting the pipe to length due to another separation process. 1 shows the pipe 1 to the right after the burrs have been removed by the method according to the invention.

Fig. 2 stellt eine Schemaskizze zur Erläuterung des erfindungsgemäßen Entgratungsverfahrens dar. Das zu entgratende Rohr 1 ist auf einer Tragevorrichtung 2 drehbar gelagert. Die Tragevorrichtung 2 kann beispielsweise aus zwei parallelen Reihen von ineinandergreifenden Rollen bestehen, die zwischen sich eine Förderrinne bilden. Durch eine Andruckvorrichtung, die beispielsweise aus einem Friktionsrad 3 besteht, wird das Rohr 1 in Rotation versetzt. Indem die Drehachse 4 des Friktionsrads 3 gegenüber der Längsachse des Rohrs 1 etwas schräg eingestellt wird, wird das Rohr 1 entweder senkrecht gegen ein Schleifband 5 gefördert und dort mit einstellbarem Druck und/oder einstellbarer Zeit entgratet, oder ab, bei Verstellung der Drehachse 4 in die andere Richtung, vom Schleifband 5 zurückgezogen. Das Schleifband 5 wird mittels einer Kontaktscheibe 6 kleinen Durchmessers mit exakter Justierbarkeit der Berührungslinie so eingestellt, daß der Schleifvorgang im Bereich einer Zone 7 zwischen Rohrmittelachse 8 und Rohrwand stattfindet, wobei die Laufrichtung 5a des Schleifbands 5 so gewählt wird, daß die Schleifrichtung von der Rohrinnenseite zur Rohraußenseite erfolgt. Zur besseren Schleifbandausnutzung oszillieren die Rohrstirnseite und das Schleifband 5 in Querrichtung relativ zueinander, bei kurzen Rohren kann die Vorrichtung oszillieren, bei längeren Rohren oszilliert das Schleifband.2 shows a schematic diagram to explain the deburring method according to the invention. The tube 1 to be deburred is rotatably mounted on a carrying device 2. The carrying device 2 can for example consist of two there are parallel rows of interlocking rollers which form a conveyor trough between them. The tube 1 is set in rotation by a pressure device, which consists, for example, of a friction wheel 3. By setting the axis of rotation 4 of the friction wheel 3 somewhat obliquely with respect to the longitudinal axis of the tube 1, the tube 1 is either conveyed vertically against a grinding belt 5 and deburred there with adjustable pressure and / or adjustable time, or off when the axis of rotation 4 is adjusted in the other direction, withdrawn from the grinding belt 5. The grinding belt 5 is adjusted by means of a contact disc 6 of small diameter with exact adjustability of the contact line so that the grinding process takes place in the area of a zone 7 between the pipe central axis 8 and the pipe wall, the running direction 5a of the grinding belt 5 being chosen so that the grinding direction from the inside of the pipe to the outside of the pipe. In order to make better use of the grinding belt, the end face of the pipe and the grinding belt 5 oscillate in the transverse direction relative to one another, with short pipes the device can oscillate, with longer pipes the grinding belt oscillates.

Durch das Schleifband wird das Rohr bei der gegebenen Rotation gleichzeitig exakt rechtwinklig geschliffen und auch ein stark anhaftender Sägegrat wird abgetragen. Das Entscheidende bei dem vorliegenden Verfahren ist, daß der schlecht zugängliche Grat am Innenrand der Rohrstirnseite ohne Rückstände, d.h. ohne Bildung von Sekundärgraten entfernt wird, und nur am Außenrand der Rohrstirnseite ein sekundärer Schleifgrat entsteht. Dieser kann mit bekannten Mitteln, beispielsweise einer elastischen Schleifscheibe oder einer Bürste entfernt werden.With the given rotation, the grinding belt simultaneously grinds the pipe precisely at right angles and also removes a strongly adhering saw burr. The crucial point with the present method is that the poorly accessible ridge on the inner edge of the tube face without residues, i.e. is removed without the formation of secondary burrs, and a secondary grinding burr is only formed on the outer edge of the pipe end face. This can be removed using known means, for example an elastic grinding wheel or a brush.

Im folgenden wird die Erfindung anhand eines praktischen Ausführungsbeispiels, das in Fig. 3 dargestellt ist, erläutert. Fig. 3 zeigt das zu bearbeitende Rohr 1, das auf zwei Reihen von Tragerollen 2 drehbar gelagert ist. Oberhalb dem Rohr 1 ist das Friktionsrad 3 angeordnet, das von einem Antrieb 9 in Drehung versetzt wird. Die Drehzahl des Friktionsrads 3 kann gegebenenfalls einstellbar sein. Mittels eines Hubzylinders 10 wird das Friktionsrad 3 mit dem Rohr 1 in Kontakt gebracht (Fig. 3 zeigt die hochgezogene Position des Friktionsrads 3). Durch Aufsetzen des Friktionsrads 3 wird das Rohr 1 in Rotation versetzt. Das Friktionsrad besteht vorteilhafterweise aus einem elastischen Material, beispielsweise Gummi oder Kunststoff. Mittels einem Verstellzylinder 11 kann die Drehachse 4 des Friktionsrads 3 gegenüber der Mittelachse 8 des Rohrs 1 eingestellt werden. Dadurch wird das Rohr 1 entweder gegen das Schleifband 5 einer Schleifvorrichtung 16 gefördert, oder aber zurückgezogen. Das Schleifband 5, das an der Stirnseite des Rohrs 1 angeordnet ist, läuftz.B. über die Kontaktscheibe 6 sowie über zwei Umlenkscheiben 12 und 13, von denen eine angetrieben wird und die zweite das Band spannt und zentriert.In dem gezeigten Ausführungsbeispiel ist das Schleifband 5 mit den Scheiben 6, 12 und 13 vertikal angeordnet, es ist aber auch eine andere Anordnung denkbar. Entscheidend ist, daß das Schleifband 5, geführt durch die Kontaktscheibe 6, gemäß dem oben beschriebenen Verfahren unterhalb der Mittelachse 8 mit der Stirnseite des Rohrs 1 in Kontakt kommt. Zur Einstellung der Kontaktzone 7 (siehe Fig. 2) ist in Fig. 3 eine Hubvorrichtung 14 vorgesehen. Eine zusätzliche Feineinstellung ist durch eine Höhenverstellung der Kontaktrolle 6 möglich. Die Schleifebene des Schleifbandes 5 muß senkrecht zur Rohrachse 8 ausgerichtet werden. Zur besseren Schleifbandausnutzung ist unter den Tragerollen 2 eine Antriebsvorrichtung 18 vorgesehen, mit der das Rohr 1 in Querrichtung zum Schleifband 5 in eine Oszillierbewegung versetzt wird. Bei sehr langen Rohren kann es praktischer sein, stattdessen die Schleifvorrichtung 16 in eine Querbewegung zu versetzen.In the following, the invention is explained on the basis of a practical exemplary embodiment, which is shown in FIG. 3. Fig. 3 shows the pipe to be processed 1, the is rotatably mounted on two rows of support rollers 2. The friction wheel 3 is arranged above the tube 1 and is rotated by a drive 9. The speed of the friction wheel 3 can optionally be adjustable. The friction wheel 3 is brought into contact with the tube 1 by means of a lifting cylinder 10 (FIG. 3 shows the raised position of the friction wheel 3). By placing the friction wheel 3, the tube 1 is set in rotation. The friction wheel advantageously consists of an elastic material, for example rubber or plastic. The axis of rotation 4 of the friction wheel 3 can be adjusted with respect to the central axis 8 of the tube 1 by means of an adjusting cylinder 11. As a result, the tube 1 is either conveyed against the grinding belt 5 of a grinding device 16, or is withdrawn. The grinding belt 5, which is arranged on the end face of the tube 1, runs e.g. Via the contact disk 6 and two deflection disks 12 and 13, one of which is driven and the second tensions and centers the belt. In the exemplary embodiment shown, the grinding belt 5 with the disks 6, 12 and 13 is arranged vertically, but it is also one other arrangement possible. It is crucial that the grinding belt 5, guided through the contact disk 6, comes into contact with the end face of the tube 1 below the central axis 8 in accordance with the method described above. A lifting device 14 is provided in FIG. 3 for setting the contact zone 7 (see FIG. 2). An additional fine adjustment is possible by adjusting the height of the contact roller 6. The grinding plane of the grinding belt 5 must be aligned perpendicular to the pipe axis 8. To make better use of the grinding belt, a drive device 18 is provided under the support rollers 2, with which the tube 1 oscillates in the transverse direction to the grinding belt 5 is moved. With very long pipes, it may be more practical to instead set the grinder 16 in a transverse motion.

Die Andruckzeit durch das Friktionsrad 3 wird mittels eines Timers gesteuert. Die erforderliche Bearbeitungszeit und die Höhe des Andrucks richten sich nach dem Rohrdurchmesser und der Wandstärke sowie nach dem Rohrwerkstoff. Nach Beendigung des ersten Entgratungsvorgangs, wenn also innen der Sägegrat abgetragen und ein scharfkantiger, gratfreier Schliff erreicht und ein Sekundärschleifgrat nur außen gebildet ist, wird der Anstellwinkel des Friktionsrads 3 so umgesteuert, daß das Rohr 1 zurückläuft. Beim Rücklauf setzt ein elastisch gebundenes, deformierbares Schleifwerkzeug 19 auf das Rohrende auf und zerspant den bei der ersten Stufe nach außen gedrückten Schleifgrat und verrundet die Kante leicht.The pressure time by the friction wheel 3 is controlled by means of a timer. The required processing time and the amount of pressure depend on the pipe diameter and the wall thickness as well as on the pipe material. After completion of the first deburring process, i.e. when the inside of the saw burr is removed and a sharp-edged, burr-free cut is achieved and a secondary grinding burr is only formed on the outside, the angle of attack of the friction wheel 3 is reversed so that the pipe 1 runs back. During the return, an elastically bound, deformable grinding tool 19 is placed on the pipe end and cuts the grinding burr pressed outwards in the first step and rounds the edge slightly.

Zur Bearbeitung des anderen Rohrendes kann auf der anderen Seite der Tragevorrichtung mit den Tragerollen 2 eine gleichartige Schleifvorrichtung 16 und ein weiteres Schleifwerkzeug 19 angeordnet sein. so daß die Bearbeitung erst an dem einen, dann an dem anderen Rohrende stattfindet. Zur Vermeidung von Totzeiten kann eine Rohrschleifanlage gemäß der Erfindung zwei im wesentlichen parallele Rohrtragevorrichtungen aufweisen, an deren gegenüberliegenden Enden jweils eine Schleifvorrichtung 16 und ein Schleifwerkzeug 19 angeordnet sind. Das Entgraten rechts und das Entgraten links erfolgt somit in verschiedenen Förderrinnen, wobei die Gesamtanlage so verkettet ist, daß eine nahezu gleichzeitige Bearbeitung rechts und links stattfindet. Die Entgratstationen sind ortsfest und die Werkstücke werden vor, während und nach der Übergabe von Rinne zu Rinne von rechts nach links oder umgekehrt transportiert.
Spitzenloses Außenrundschleifen mit geeigneten Werkzeugen im Anschluß an das Innenentgraten kann das im Text unter 19 beschriebene Werkzeug völlig ersetzen und gleichzeitig die Rohroberfläche verbessern.To machine the other pipe end, a similar grinding device 16 and a further grinding tool 19 can be arranged on the other side of the carrying device with the carrying rollers 2. so that the machining first takes place at one end of the pipe and then at the other. To avoid dead times, a pipe grinding system according to the invention can have two substantially parallel pipe carrying devices, on the opposite ends of which a grinding device 16 and a grinding tool 19 are arranged. Deburring on the right and deburring on the left are thus carried out in different conveyor troughs, the entire system being linked in such a way that machining to the right and left takes place almost simultaneously. The deburring stations are stationary and the workpieces are transported from right to left or vice versa before, during and after the transfer from channel to channel.
Centerless external cylindrical grinding with suitable tools following internal deburring can completely replace the tool described in the text under 19 and at the same time improve the pipe surface.

Claims (10)

Verfahren zum Entgraten von Rohrstirnseiten durch spanabhebende Bearbeitung,
dadurch gekennzeichnet, daß das zu entgratende Rohr (1) um seine Längsachse (8) rotierend mit seiner Stirnseite so gegen ein Schleifband (5) gedrückt wird, daß die Schleifrichtung von der Rohrinnenseite zur Rohraußenseite erfolgt.Process for deburring pipe end faces by machining,
characterized in that the pipe (1) to be deburred rotating about its longitudinal axis (8) is pressed with its end face against a grinding belt (5) in such a way that the grinding direction is from the inside of the pipe to the outside of the pipe. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Berührungslinie des Schleifbandes (5) mit der Rohrstirnseite so eingestellt wird, daß der auf die Rohrstirnseite zulaufende Teil des Schleifbands (5) in einer Zone (7) zwischen Rohrmittelachse (8) und Rohrwand angreift.Method according to claim 1,
characterized in that the line of contact of the grinding belt (5) with the pipe end face is set in such a way that the part of the grinding belt (5) running towards the pipe end face engages in a zone (7) between the pipe center axis (8) and the pipe wall. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Rohrstirnseite und das Schleifband (5) in Querrichtung relativ zueinander oszillieren.Method according to claim 1 or 2,
characterized in that the end face of the pipe and the grinding belt (5) oscillate in the transverse direction relative to one another. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der an der Außenkante der Rohrstirnseite entstehende sekundäre Schleifgrat mit konventionellen Mitteln entfernt und die Rohraußenkante leicht abgerundet wird.Method according to one of the preceding claims, characterized in that the secondary grinding burr which arises on the outer edge of the tube end face is removed by conventional means and the tube outer edge is slightly rounded off. Entgratvorrichtung zur Durchführung des Verfahrens nach Anspruch 1 mit einer Tragevorrichtung (2), auf der ein zu bearbeitendes Rohr (1) drehbar gelagert ist, gekennzeichnet durch eine Dreh- und Andruckvorrichtung (3), die das Rohr (1) in Rotation versetzt und gleichzeitig mit seiner Stirnseite gegen ein Schleifband (5) drückt, das mittels einer Kontaktscheibe (6) so einstellbar ist, daß die Schleifrichtung von der Rohrinnenseite zur Rohraußenseite erfolgt.Deburring device for carrying out the method according to claim 1 with a carrying device (2) on which a pipe (1) to be machined is rotatably supported, characterized by a rotating and pressing device (3) which sets the pipe (1) in rotation and simultaneously presses with its end face against a grinding belt (5) which can be adjusted by means of a contact disc (6) so that the grinding direction is from the inside of the pipe to the outside of the pipe. Entgratvorrichtung nach Anspruch 5,
dadurch gekennzeichnet, daß die Dreh- und Andruckvorrichtung ein Friktionsrad (3) ist, dessen Drehachse (4) schräg zur Rohrlängsachse (8) einstellbar ist und das auf die Außenwand des Rohrs (1) wirkt.Deburring device according to claim 5,
characterized in that the turning and pressing device is a friction wheel (3), the axis of rotation (4) of which can be set at an angle to the longitudinal axis of the tube (8) and which acts on the outer wall of the tube (1). Entgratvorrichtung nach Anspruch 5 oder 6,
dadurch gekennzeichnet, daß die Berührungslinie des Schleifbands (5) mit der Rohrstirnseite mittels einer Kontaktwalze (6) so einstellbar ist, daß der auf die Rohrstirnseite zulaufende Teil des Schleifbands (5) in einer Zone (7) zwischen Rohrmittelachse (8) und Rohrwand liegt.Deburring device according to claim 5 or 6,
characterized in that the line of contact of the grinding belt (5) with the pipe end face can be adjusted by means of a contact roller (6) such that the part of the grinding belt (5) running towards the pipe end face lies in a zone (7) between the pipe center axis (8) and the pipe wall . Entgratvorrichtung nach einem der Ansprüche 5 bis 7,
dadurch gekennzeichnet, daß ein Antrieb (18) die Tragevorrichtung (2) relativ zum Schleifband (5) oszilliert.Deburring device according to one of claims 5 to 7,
characterized in that a drive (18) oscillates the carrying device (2) relative to the grinding belt (5). Entgratvorrichtung nach einem der Ansprüche 5 bis 8,
gekennzeichnet durch ein elastisches Schleifwerkzeug (19), das auf das Rohrende aufsetzbar ist oder durch spitzenloses Außenrundschleifen des ganzen Rohres den an der Außenkante der Rohrstirnseite entstehenden sekundären Schleifgrat zerspant und die Rohrkante leicht abrundet.Deburring device according to one of claims 5 to 8,
characterized by an elastic grinding tool (19) which can be placed on the pipe end or by centerless external cylindrical grinding of the entire pipe, the secondary grinding burr which arises on the outer edge of the pipe end face is machined and the pipe edge is rounded off slightly. Entgratvorrichtung nach einem der Ansprüche 5 bis 9,
dadurch gekennzeichnet, daß zwei Tragevorrichtung (2) nebeneinander angeordnet sind, die jeweils an gegenüberliegenden Enden eine Entgratvorrichtung (16,19) aufweisen, und daß eine Vorrichtung zur Übergabe eines Rohrs (1) von einer Tragevorrichtung (2) zur anderen vorhanden ist.Deburring device according to one of claims 5 to 9,
characterized in that two carrying devices (2) are arranged side by side, each have a deburring device (16, 19) at opposite ends, and that a device for transferring a tube (1) from one carrying device (2) to the other is provided.
EP91109863A 1991-06-16 1991-06-16 Procedure of and device for deburring of pipe end faces Expired - Lifetime EP0519093B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91109863A EP0519093B1 (en) 1991-06-16 1991-06-16 Procedure of and device for deburring of pipe end faces
AT91109863T ATE126466T1 (en) 1991-06-16 1991-06-16 METHOD AND DEVICE FOR DEBURRING TUBE END SIDES.
DE59106275T DE59106275D1 (en) 1991-06-16 1991-06-16 Method and device for deburring pipe ends.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91109863A EP0519093B1 (en) 1991-06-16 1991-06-16 Procedure of and device for deburring of pipe end faces

Publications (2)

Publication Number Publication Date
EP0519093A1 true EP0519093A1 (en) 1992-12-23
EP0519093B1 EP0519093B1 (en) 1995-08-16

Family

ID=8206835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109863A Expired - Lifetime EP0519093B1 (en) 1991-06-16 1991-06-16 Procedure of and device for deburring of pipe end faces

Country Status (3)

Country Link
EP (1) EP0519093B1 (en)
AT (1) ATE126466T1 (en)
DE (1) DE59106275D1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623421A1 (en) * 1993-04-02 1994-11-09 Almi Machinefabriek Vriezenveen B.V. Apparatus for one-sided shaping of tubular workpieces with different diameters
EP1023968A2 (en) * 1999-01-29 2000-08-02 Anton Wimmer Bevelling machine
EP1990132A2 (en) * 2007-05-09 2008-11-12 Adige S.p.A. Device for deburring end portions of tubes
CN100589930C (en) * 2006-12-31 2010-02-17 中国科学院金属研究所 Device for eliminating burr of metal round tube end panel and interior edge
CN117400083A (en) * 2023-12-15 2024-01-16 新乡市龙锦精密铝管科技有限公司 Pipe body end deburring grinding device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100509281C (en) * 2006-12-31 2009-07-08 中国科学院金属研究所 Device for eliminating burr of metal round tube end panel and exterior edge
CN113146406B (en) * 2021-05-19 2023-04-25 西安航空职业技术学院 High-precision steel pipe end polishing device for machining
CN113579897B (en) * 2021-08-03 2022-08-19 四川庆达实业集团有限公司 Automatic welding oil gas pipe interface polishing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257195A (en) * 1979-08-20 1981-03-24 Appelgren Donald W Deburring and chamfering fixture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257195A (en) * 1979-08-20 1981-03-24 Appelgren Donald W Deburring and chamfering fixture

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 40 (M-278)(1477) 21. Februar 1984 & JP-A-58 196 963 ( SUMITOMO KINZOKU KOGYO K. K. ) 16. November 1983 *
WT/WERKSTATTSTECHNIK Bd. 77, Nr. 9, September 1987, BERLIN, DE Seiten 479 - 481; G. WEBER ET AL.: 'Abspanen durch Breitbandschleifen' *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623421A1 (en) * 1993-04-02 1994-11-09 Almi Machinefabriek Vriezenveen B.V. Apparatus for one-sided shaping of tubular workpieces with different diameters
EP1023968A2 (en) * 1999-01-29 2000-08-02 Anton Wimmer Bevelling machine
EP1023968A3 (en) * 1999-01-29 2003-02-12 Anton Wimmer Bevelling machine
CN100589930C (en) * 2006-12-31 2010-02-17 中国科学院金属研究所 Device for eliminating burr of metal round tube end panel and interior edge
EP1990132A2 (en) * 2007-05-09 2008-11-12 Adige S.p.A. Device for deburring end portions of tubes
EP1990132A3 (en) * 2007-05-09 2009-11-25 Adige S.p.A. Device for deburring end portions of tubes
CN117400083A (en) * 2023-12-15 2024-01-16 新乡市龙锦精密铝管科技有限公司 Pipe body end deburring grinding device
CN117400083B (en) * 2023-12-15 2024-03-29 新乡市龙锦精密铝管科技有限公司 Pipe body end deburring grinding device

Also Published As

Publication number Publication date
EP0519093B1 (en) 1995-08-16
ATE126466T1 (en) 1995-09-15
DE59106275D1 (en) 1995-09-21

Similar Documents

Publication Publication Date Title
EP1553329B1 (en) Apparatus and method for manufactoring a cam shaft
DE2610467A1 (en) DEVICE FOR CUTTING PIPES
DE19739895C2 (en) Method and device for removing the oxide skin from metal strips
EP0519093B1 (en) Procedure of and device for deburring of pipe end faces
DE10338682A1 (en) Surface treatment brush finishing tool has bristles of different length
EP1632444B1 (en) Device for stepwise transport of workpiece carriers
EP2636482A1 (en) Workpiece processing system and method for detailed processing of a workpiece
DE1914082C3 (en) Device for lapping or polishing flat workpiece surfaces
DE3218953C2 (en) Method and apparatus for forming an oblique groove in a semiconductor device
DE10220640A1 (en) Method for removing slices from workpiece by wire saw involves aligning wire controlled in grooves between two wire guide rollers to prevent damage
DE3048738C2 (en) Feed device for intermittent turning of a circular saw blade
DE102016203334A1 (en) Device and method for deburring workpieces
DE2438833A1 (en) METHOD AND DEVICE FOR ROLLING TUBULAR HOLLOW BODIES
DE19961351C1 (en) Method and device for joining the ends of metal strips by means of resistance welding
DE3340388A1 (en) SPARK EDM METHOD AND DEVICE WITH MOVING WIRE ELECTRODE
DE10338276B4 (en) milling tool
DE10025159C2 (en) Method and device for connecting the ends of two metal strips
DE4308692A1 (en) Grinding the peripheral surfaces of crankpin bearings
EP0144786A1 (en) Separation device
DE4010436C2 (en)
DE602004012486T2 (en) Device for producing an endless metal belt
DE1925369A1 (en) Pipe for pneumatic conveying devices, process for its manufacture and device for carrying out the process
DE3020578A1 (en) METHOD AND DEVICE FOR FINISHING A RING-SHAPED OBJECT
DD200558A1 (en) METHOD AND DEVICE FOR PRODUCING SCREW PRESSURE SPRINGS
DE1285433B (en) Device for tapering elongated workpieces with a circular cross-section

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19930622

17Q First examination report despatched

Effective date: 19941205

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950816

Ref country code: GB

Effective date: 19950816

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19950816

REF Corresponds to:

Ref document number: 126466

Country of ref document: AT

Date of ref document: 19950915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59106275

Country of ref document: DE

Date of ref document: 19950921

ET Fr: translation filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19950816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19960616

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19960630

Ref country code: LI

Effective date: 19960630

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000526

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000620

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000623

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010617

EUG Se: european patent has lapsed

Ref document number: 91109863.0

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403