DE109688C

DE109688C -

Info

Publication number: DE109688C
Application number: DENDAT109688D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 49: Metallbearbeitung, mechanische.CLASS 49: Metalworking, mechanical.

Patentirt im Deutschen Reiche vom 25. August 1899 ab.Patented in the German Empire on August 25, 1899.

Gegenstand der Erfindung ist eine Neuerung an solchen Maschinen, auf welchen konische Werkstücke beliebiger Art, welche durch Pressen, Giefsen oder dergl. roh vorgeformt sind, der letzten Bearbeitung unterworfen werden, und zwar handelt es sich speciell um eine Maschine zur Massenfabrikation, bei welcher sämmtliche Arbeitsvorgänge, wie Einspannen des Werkstückes, Bewegung des Werkzeuges etc., vollkommen automatisch erfolgen. Es sei z. B. das in Fig. ι der beiliegenden Zeichnung dargestellte konische Metallstück a, welches durch Pressen oder Ziehen roh vorgeformt ist, nahe an seinem oberen Ende mit zwei Rillen zu versehen, wobei die Bedingung gestellt wird, dafs diese Rillen sich in einem genau bestimmten und stets gleichbleibenden Abstand von der Kopffläche des Metallstückes befinden. Im Uebrigen soll eine gewisse Unregelmäfsigkeit der.Form, wie sie sich beim Pressen oder Ziehen immer ergiebt, erlaubt sein, so dafs also die Länge und die Dicke der einzelnen Metallstücke innerhalb gewisser Grenzen verschieden sein kann.The subject of the invention is an innovation in such machines, on which conical workpieces of any kind, which are rough preformed by pressing, casting or the like, are subjected to the final processing, specifically a machine for mass production, in which all Work processes, such as clamping the workpiece, moving the tool, etc., take place completely automatically. Let it be B. the conical piece of metal a shown in Fig. Ι of the accompanying drawing, which is preformed raw by pressing or drawing, to be provided near its upper end with two grooves, the condition being that these grooves are in a precisely defined and are always the same distance from the top surface of the metal piece. In addition, a certain irregularity of the shape, as it always results from pressing or pulling, should be allowed, so that the length and the thickness of the individual pieces of metal can vary within certain limits.

Um nun die oben erwähnte Bedingung zu erfüllen, könnte man hinter dem Futter einen Anschlag anordnen, an welchem das hintere Ende des zu bearbeitenden Werkstückes zur Anlage käme. Wenn dann das Werkzeug im Futter festgespannt und der das Werkzeug tragende Support ein für allemal eingestellt würde, so liefsen sich natürlich die in dem Werkzeug einzuschneidenden Rillen immer an genau derselben Stelle anbringen. Die Entfernung derselben von der Kopffläche des Werkstückes würde hierbei aber immer noch verschieden sein und es müfste erst noch diese Ungenauigkeit durch Abstechen der Kopffläche auf die genaue Länge geregelt werden. Da dieses aber in gewissen Fällen nicht angängig ist und auch für die Massenfabrikation zu viel Zeit beansprucht, so sieht der Erfinder von der Anwendung besonderer Anschläge für das einzuspannende Werkstück vollkommen ab und gleicht die Unregelmäfsigkeit in der Einspannung desselben auf andere Weise aus.In order to meet the above-mentioned condition, you could put one behind the feed Arrange stop at which the rear end of the workpiece to be machined to Plant would come. When the tool is then clamped in the chuck and the support that carries the tool is set once and for all would, of course, the grooves to be cut in the tool would always start to run in exactly the same place. The removal of the same from the head surface of the Workpiece would still be different and this would have to be done first Inaccuracy can be regulated by parting off the head surface to the exact length. There but this is not feasible in certain cases and too much for mass production Time required, so the inventor sees the use of special stops for the workpiece to be clamped and compensates for the irregularity in the clamping the same in a different way.

Die Fig. 2 und 3 veranschaulichen die hierbei in Betracht kommenden Theile einer derartigen Maschine.Figs. 2 and 3 illustrate the parts of such a system which may be considered here Machine.

Das Werkstück a, welches von einer hier nicht gezeichneten Zuführungsvorrichtung vor das Futter b gebracht worden ist, wird in einfachster Weise dadurch befestigt, dafs es von einem Dorn c, der an einem beweglichen Schlitten d angebracht ist, in dieses Futter b hineingedrückt wird. Die hierbei aufgewendete Kraft mufs natürlich so bemessen sein, dafs das Werkstück bei der nachfolgenden Drehung nicht von dem Werkzeug festgehalten wird, sondern der Drehung des Futters folgt. Zu dem Zwecke wird. man den Schlitten von einer Feder oder einem Gewicht andrücken lassen, damit der Druck sich stetig gleichbleibt. Es wird also zur Befestigung des Werkstückes im Futter die Konicität desselben selbst benutzt. Da aber, wie oben erwähnt, die einzelnen MetallslUcke in ihrer äufseren Form eine gewisse Verschiedenheit aufweisen, so werden sich dieselben nicht immer gleich weit in das Futter hineinpressen, vielmehr werden solche Metallstücke, die etwas dicker sind, weiter aus dem Futter herausstehen als solche, derenThe workpiece a, which has been brought in front of the chuck b by a feed device not shown here, is fastened in the simplest way by being pressed into this chuck b by a mandrel c, which is attached to a movable slide d. The force applied here must of course be measured in such a way that the workpiece is not held by the tool during the subsequent rotation, but follows the rotation of the chuck. For the purpose will. let the slide be pressed by a spring or a weight so that the pressure remains constant. The conicity of the chuck itself is used to fasten the workpiece in the chuck. But since, as mentioned above, the individual metal gaps show a certain difference in their outer shape, they will not always be pressed equally far into the lining; rather, pieces of metal that are somewhat thicker will protrude further out of the lining than those that are whose

Claims

outer circumference is a little smaller. To compensate for this inaccuracy in the clamping, the following arrangement is made:

The support e carrying the tool is constantly pressed to the right by a spring / or the like. When the workpiece is pressed in, a stop g attached to the slide d now comes to rest against a stop / 2 of the tool support opposite it, the distances between the individual parts as follows. are dimensioned so that the tool assembly e is always moved a certain distance, regardless of whether the workpiece moves far into the chuck or not. Since the differences in the external shapes of the workpieces must not exceed certain limits, this condition can be met with ease. So when the workpiece is firmly pressed in the chuck, the tool support e moved against the action of the spring / to the left lies on the carriage d, which clamps the workpiece, and the tool i itself, because it is attached to the tool support, at this moment always the same distance from the carriage d. Since the latter is concerned about the advancement of the workpiece BEZW. Since the mandrel c attached to this rests against the head surface of the workpiece when it is clamped, it follows from this that when the clamping of the workpiece is completed, the tool is always in exactly the same position in relation to the head surface of the workpiece, so that the above-identified condition, according to that the grooves to be cut into the workpiece by the tool should always have the same distance from the head surface of the latter is fulfilled.

At this moment, ie when the workpiece is clamped, the tool support e only needs to be clamped in its current position so that it cannot change its position when the tool is now moving towards the workpiece. This clamping of the tool support takes place, as can be seen from FIG. 1, by means of a thumb disk k wedged onto the drive shaft of the machine, which acts on the roller / lever m. The pull rod η engages between the free end points and the pivot point of this lever, which protrudes with its upper end into a cutout ο of the tool support and there grips the bolt ρ. This cutout must of course be made correspondingly wide, since the support e moves back and forth, while the pull length η cannot follow this movement, but slides back and forth on the bolt ρ .

The aforementioned thumb disk k is shaped in such a way that at the moment when the workpiece is clamped, it moves the lever m and thus the pull rod η downwards, so that the. Tool support is clamped in its guide. Of course, the elevation of the thumb disk must be so long that the tool support is held during the entire time set for machining the workpiece. After the tool has been clamped and the tool support has been fixed, the tool is now advanced in a known manner by means of the linkage qr.

Of course, the head surface can also be machined here if necessary. This is easily possible because the carriage d immediately moves back after the workpiece and the tool support have been clamped, and the head surface of the workpiece is cleared.

The devices used for this purpose, as well as the mechanisms used for inserting the workpiece and for advancing the carriage d , are not shown in particular, since the machine is known per se and the invention consists only in the correct setting of the tool.

Patent claim:

A machine for processing conical workpieces, characterized in that the raw, preformed conical workpieces, which are brought in front of the chuck by a transport device in a known manner, are pressed into the conical with the pressure required to hold them from a mandrel (c) attached to a movable carriage (d) Chuck (b) are pressed into it, a stop (g ) attached to the carriage (d) taking the tool support (e) with it against the action of a spring, in such a way that the tool is always in the same after the workpiece has been pressed in and the tool support has been locked Position opposite the head surface of the workpiece.

1 sheet of drawings.