DE1061219A1

DE1061219A1 -

Info

Publication number: DE1061219A1
Authority: DE

Description

DEUTSCHESGERMAN

Es sind Vorrichtungen zum Spitzenlosen Durchgangsschleifen und -polieren von Rundmaterial bekannt, bei denen das Werkstück an den Schleifscheiben unter Drehvorschub vorbeibewegt wird, der dem Werkstück durch vor und hinter den Schleifscheiben angeordnete Paare von sich drehenden Transportscheiben erteilt wird, von denen das nachgeschaltete Scheibenpaar gleichzeitig als Druckpoliervorrichtung für das Werkstück dient. Die Transportscheiben sind so angeordnet, daß sie mit Teilen ihrer Stirnflächen am Werkstück angreifen. Die Achsen der Transportscheiben jedes Paares sind gegeneinander in der Durchlaufrichtung des Werkstückes versetzt und gegen eine zur Durchlaufrichtung des Werkstückes senkrecht stehende Ebene in gleichen spitzen Winkeln geneigt.Devices for centerless through-grinding and polishing of round material are known, in which the workpiece is moved past the grinding wheels at a rotary feed that the workpiece by pairs of rotating transport disks arranged in front of and behind the grinding disks is issued, of which the downstream pair of discs as a pressure polishing device for the workpiece is used. The transport disks are arranged so that they with parts of their end faces attack the workpiece. The axes of the transport disks of each pair are against each other in the The direction of passage of the workpiece is offset and perpendicular to the direction of passage of the workpiece standing plane inclined at the same acute angles.

Die bekannten Vorrichtungen, die sich dadurch auszeichnen, daß sich mit ihnen in einem Arbeitsgang hohe Schleif- und Polierleistungen erzielen lassen, haben jedoch noch gewisse Nachteile. Bei ihnen liegen die Achsen jedes Transportscheibenpaares in einer zum Werkstück parallelen Ebene, meist oberhalb des Werkstückes, das durch ein zwischen den Scheiben befindliches Führungslineal unterstützt wird. Die Vorschubgeschwindigkeit des Werkstücks hängt bei konstanter Scheibendrehzahl von dem Abstand zwischen den Berührungsstellen des Werkstücks an den Scheiben und den Mitten ihrer Achsen ab. Jedoch wird die Vorschubgeschwindigkeit auch vom Werkstückdurchmesser beeinflußt, weil sich bei unterschiedlichen Durchmessern der Werkstücke die Abstände der Werkstückachse von den Mitten der Scheibenachsen ändern. Man könnte hier Abhilfe schaffen durch Veränderung der Höhenlage der Führungslineale oder der Transportscheibenpaare. Dies würde aber nur mit nicht unerheblichen Umstellarbeiten und verlängerten Einrichtezeiten durchzuführen sein. Schließlich sind die zwischen den Transport- bzw. Polierscheiben befindlichen Führungslineale starkem Verschleiß unterworfen und müssen des öfteren ausgewechselt werden.The known devices, which are characterized in that they work in one operation can achieve high grinding and polishing performance, but still have certain disadvantages. Lie with them the axes of each transport disk pair in a plane parallel to the workpiece, mostly above the workpiece, which is supported by a guide ruler located between the panes. The feed rate of the workpiece depends on the distance between the contact points at a constant wheel speed of the workpiece on the disks and the centers of their axes. However, the feed speed will also influenced by the workpiece diameter, because with different diameters of the workpieces, the distances between the Change the workpiece axis from the centers of the disk axes. One could remedy this through change the height of the guide rulers or the pairs of transport discs. But this would only be with not inconsiderable changeover work and extended set-up times have to be carried out. Finally are the guide rulers located between the transport or polishing disks are subject to heavy wear and often have to be replaced.

Die Erfindung bezieht sich auf eine Vorrichtung der vorbezeichneten Art zum spitzenlosen Durchgangsschleifen und -polieren von Rundmaterial, die derart ausgebildet ist, daß die Vorschubgeschwindigkeit unabhängig von den Durchmessern der Werkstücke regelbar ist und die Führungslineale zwischen den Transport- und Polierscheiben in Fortfall kommen.The invention relates to a device of the aforementioned type for centerless through grinding and polishing of round material, which is designed in such a way that the feed speed is independent can be regulated by the diameter of the workpieces and the guide rulers between the transport and polishing pads are no longer available.

Bei der Vorrichtung gemäß der Erfindung wird dies dadurch ermöglicht, daß die Achsen der Transportscheibenpaare in senkrechten, quer zur Durchlaufrichtung des Werkstücks stehenden Ebenen derart gegeneinander versetzt sind, daß je eine Scheibe mit ihrer Achse oberhalb und die jeweils zugeordnete Scheibe mit ihrer Achse unterhalb des Werkstücks liegt, wobeiIn the device according to the invention this is made possible by the fact that the axes of the transport disk pairs in perpendicular planes transverse to the direction of passage of the workpiece against each other are offset that each a disc with its axis above and the respective associated disc lies with its axis below the workpiece, wherein

Vorrichtung zum spitzenlosen
Durchgangsschleifen und -polieren
von RundmaterialDevice for the centerless
Through grinding and polishing
of round material

Anmelder:
Schumag Schumacher Metallwerke
G.m.b.H.,
Aachen, Klausener Str. 2Applicant:
Schumag Schumacher Metallwerke
GmbH,
Aachen, Klausener Str. 2

Heinrich Herrmann, Aachen, ist als Erfinder genannt wordenHeinrich Herrmann, Aachen, has been named as the inventor

der Abstand zwischen den Achsen jedes Transportscheibenpaares veränderlich ist.the distance between the axes of each transport disk pair is variable.

Bei dieser Anordnung nimmt das Werkstück selbsttätig eine Mittellage zwischen den Achsen der Tfansportscheibenpaare ein und verbleibt in dieser unabhängig vom Werkstückdurchmesser ohne Verwendung von Führungslinealen zwischen den Scheiben.With this arrangement, the workpiece automatically assumes a central position between the axes of the conveyor disk pairs and remains in this regardless of the workpiece diameter without the use of Guide rulers between the panes.

Außerdem läßt sich durch die vorgesehene Veränderlichkeit des Abstandes zwischen den Achsen jedes Transportscheibenpaares die Vorschubgeschwindigkeit der Werkstücke ohne Rücksicht auf ihren Durchmesser gleichmäßig beeinflussen. Diese Abstandsänderung kann durch Höhenverstellung jeder einzelnen Transportscheibe vorgenommen werden. Zweckmäßig erfolgt sie jedoch durch gemeinsame Stellmittel in der Weise, daß die Scheibenachsen jedes Paares gleichmäßig einander genähert oder voneinander entfernt werden.In addition, the planned variability of the distance between the axes each Transport disk pair determines the feed speed of the workpieces regardless of their diameter affect evenly. This change in distance can be achieved by adjusting the height of each individual transport disc be made. However, it is expediently carried out by common adjusting means in such a way that that the disk axes of each pair are evenly approached or removed from each other.

Auch ist vorgesehen, die Transportscheibenpaare in ihrer Höhenlage gegenüber den Schleifscheiben, vorzugsweise gemeinsam, verstellbar anzuordnen, um sie der gewünschten Lage des Werkstücks zwischen den Schleifscheiben bzw. des zwischen diesen vorgesehenen Führungslineals anzupassen.It is also provided that the pairs of transport disks are preferably in their height position relative to the grinding disks together, to be arranged adjustable in order to achieve the desired position of the workpiece between the Adjust grinding wheels or the guide ruler provided between them.

Ein Ausführungsbeispiel der Vorrichtung nach der Erfindung ist in der Zeichnung schematisch dargestellt. In dieser zeigtAn embodiment of the device according to the invention is shown schematically in the drawing. In this shows

Abb. 1 eine Ansicht der Vorrichtung in der Durchlaufrichtung des Rundmaterials,
Abb. 2 eine Seitenansicht und
Abb. 3 eine Draufsicht der Vorrichtung.Fig. 1 is a view of the device in the direction of passage of the round material,
Fig. 2 is a side view and
Fig. 3 is a plan view of the device.

Das stabförmige Werkstück 1 wird während seines Durchganges durch die Vorrichtung zwischen den Schleifscheiben 2, 2' geschliffen und anschließend zwischen den Polierscheiben 3, 3' druckpoliert. DerThe rod-shaped workpiece 1 is ground during its passage through the device between the grinding wheels 2, 2 ' and then pressure-polished between the polishing wheels 3, 3'. the

909 560/62909 560/62

Claims

The workpiece 1 is transported through the device in the direction indicated by an arrow through the transport disks 4, 4 'and in the same way through the polishing disks 3, 3'. The disks 3, 3 'and 4, 4' are arranged in pairs so that their axes 5, 5 'and 6, 6' form acute angles with a plane perpendicular to the direction of passage of the workpiece 1. The disks in each pair are offset in height from one another in such a way that, of the pairs of transport disks, the corresponding disks 3, 4 with their axes 5, 6 above and the other disks 3 ', 4' with their axes 5 ', 6' below the axis of workpiece 1 lie. They revolve in the directions indicated by arrows and with parts of their end faces attack opposite sides of the workpiece. To achieve a sufficiently large contact surface with the workpiece, the end faces of the disks 3, 3 'and 4, 4' can be curved or conical in a suitable manner. The transport disks move the a ° workpiece in the direction shown in rotation around its own axis and at the same time move it in the direction indicated by an arrow. Here, the axis of the workpiece between the disks is centered on the distance between the disk axes 5, 5 'and 6, 6', without the need for the workpiece to be supported, for example by a guide ruler arranged between the disks. The speed of the workpiece through the device depends, apart from the speed of the disks 3, 3 'and 4, 4', on the distance between their axes 5, 5 'and 6, 6'. In the embodiment shown, this distance can be adjusted by evenly lifting one and lowering the other of the disks belonging to a pair so that the middle of the distance between their axes, on which the workpiece adjusts, remains unchanged in its height and the workpiece during the regulation of its throughput speed does not change this altitude in the machine and in relation to the grinding wheels 2, 2 'rotating about fixed axes. Eccentric disks 9, 9 'or 10, 10', which are assigned to a pair of disks and are fastened in opposite directions on common axes 7 and 8, are used to adjust the disks 3, 3 'and 4, 4'. 12 'the axes 5, 5' and 6, 6 'of the Polierbzw. Raise and lower transport discs. The axes 7 and 8 of the eccentrics are connected via a linkage 13 to an actuator (not shown) so that both pairs of disks, which in this case rotate at the same speed, give the workpiece the same feed, the size of which is based on a (not shown) Scale is displayed. However, it is also possible for the spacing of the disk axes and thus the feed speeds of the pairs of disks or their details to be set separately, for example in order to allow the polishing disks 3, 3 'to advance to increase the polishing effect. The height of the axis of the workpiece 1, which is not influenced by the setting of the feed rate, can be changed to adapt to different workpiece diameters. For this purpose, eccentrics 15 or 16 are used, for example, which when rotated about their axes 17 or 18 via push rods 19 or 20, the axes 7 or 8 and thus the eccentrics 9, 9 'or 10, 10' and the push rods 11 , 11 'and 12, 12' move the height of the pairs of wheels 3, 3 'and 4, 4' with respect to the center of the grinding wheels 2, 2 '. The rotation of the eccentric axles 17, 18 takes place via a linkage 21 by a common actuator (not shown), and the size of the height displacement of the pairs of discs can be made readable on a scale (not shown). It is adjusted to the diameter of the workpieces to be machined so that the straight connecting line between the centers of the distances between the axes 5 and 5 'or 6 and 6' is half a workpiece diameter above the guide ruler 23 attached between the grinding wheels 2, 2 ' runs. As a result, without the need to adjust the height of the guide ruler 23, the workpiece runs through the device in a completely straight line. On the other hand, the height adjustment can also be used to change the position of the workpiece axis in relation to the grinding wheels after adjusting the guide ruler, for example to grind either above or below their center. - The drive of the grinding disks 2,2 'and the transport or polishing disks 4 ,. 4 'or 3, 3' takes place with variable speed in any known manner. PATENT CLAIMS:

1. Device for centerless through grinding and polishing of round material with before and behind the grinding wheels arranged pairs of rotating, the workpiece with part of their end faces between gripping and this rotary feed distributing Transport disks whose axes are offset from one another and one to the direction of travel of the Workpiece perpendicular plane are inclined at the same acute angles, with the downstream The pair of transport disks also serves as a pressure polishing device, characterized in that that the axes (5, 5 'and 6, 6') of the transport disk pairs (3, 3 'and 4, 4') in vertical, transverse to the direction of travel of the workpiece (1) standing planes against each other are offset that each a disc (3, 4) with its axis (5, 6) above and the respectively associated Disc (3 ', 4') with its axis (5 ', 6') below the workpiece, the distance between the axes of each transport disk pair is variable.

2. Device according to claim 1, characterized in that the transport disk pairs (3, 3 'and 4, 4') are jointly adjustable in their height relative to the grinding wheels (2, 2 ').

1 sheet of drawings