DE284188C

DE284188C -

Info

Publication number: DE284188C
Application number: DENDAT284188D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei automatischen und halbautomatischen Werkzeugmaschinen zur Berarbeitung von Holz, Metall ist es allgemein bekannt, die selbsttätig bewegten Maschinenteile, wie Schlitten, Spindeln, Spannfutter usw., durch Anwendung von Unrundscheiben, Nocken u. dgl. zu betätigen. Damit nun solche Maschinen zur Bearbeitung möglichst verschiedenartiger Arbeitsstücke Verwendung finden können, ist es Bedingung, für jeden selbsttätig bewegten Maschinenteil mehrere auswechselbare, ungleich profilierte Unrundscheiben bzw. Nocken zur Verfügung zu haben, damit der Weg bzw. Hub des entsprechenden Maschinenteiles geändert werden kann oder die zur Verschiebung der Maschinenteile dienenden Trommeln mit auswechselbaren Kurvenstücken bzw. Ansätzen zu versehen. Es ist ohne weiteres klar, daß Maschinen dieser Gattung, wo mehrere Werk-With automatic and semi-automatic machine tools for processing wood, Metal, it is generally known to automatically move machine parts, such as slides, Spindles, chucks, etc., to be operated by using non-circular disks, cams and the like. So now such machines for processing as diverse work pieces as possible Can be used, it is a condition for every automatically moving machine part several interchangeable, unevenly profiled non-circular disks or cams for To have available so that the path or stroke of the corresponding machine part changed or the drums used to move the machine parts with replaceable To provide curved pieces or approaches. It is immediately clear that machines of this type, where several work

ao zeuge in Betracht kommen, wie z. B. bei Automaten, wegen dieser Zubehörteile verhältnismäßig teuer zu stehen kommen.ao witness come into consideration, such as B. with machines, because of these accessories are relatively expensive.

Gegenstand vorliegender Erfindung ist nun eine Antriebsvorrichtung beweglicher Maschinenteile an automatischen und halbautomatischen Werkzeugmaschinen, bei welcher keine auswechselbaren Unrundscheiben bzw. Nocken mehr zur Verwendung gelangen.The present invention now relates to a drive device for moving machine parts on automatic and semi-automatic machine tools that do not have interchangeable non-circular disks or cams get more used.

Gemäß der Erfindung wird jeder selbsttätig bewegte Teil der Maschine, unter Anwendung zweckentsprechender mechanischer Mittel als Übertragungsglieder, durch Anschläge gesteuert, welche regulierbar auf einer Trommel angeordnet sind, wobei dieser Trommel einerseits eine geradlinige Hin- und Herbewegung in Richtung ihrer Achse, andererseits eine Schaltbewegung um ihre Achse erteilt wird, in der Weise, daß nach jeder Hin- oder Herbewegung der Trommel eine andere Gruppe von Anschlägen in die Arbeitsstellung gebracht wird.According to the invention, each automatically moving part of the machine is used appropriate mechanical means as transmission links, controlled by stops, which are adjustably arranged on a drum, this drum on the one hand a straight back and forth movement in the direction of its axis, on the other hand a switching movement is issued about its axis, in such a way that after each reciprocating movement of the drum a different group of stops is brought into the working position.

In der Zeichnung sind mehrere Ausführungsbeispiele des Erfindungsgegenstandes dargestellt, und zwar in Verbindung mit einer automatischen Drehbank.Several exemplary embodiments of the subject matter of the invention are shown in the drawing, in conjunction with an automatic lathe.

Fig. ι zeigt die Drehbank von der Seite ge- ⁴^ sehen, wobei der besseren Verständlichkeit halber gewisse Teile der Maschine weggelassen sind;Fig. Ι shows the lathe from the side overall ⁴ ^ see the clarity certain parts of the machine are omitted for clarity;

Fig. 2 und 3 zeigen die entsprechenden Vorder- und Hinteransichten;Figures 2 and 3 show the respective front and rear views;

Fig. 4 zeigt in schematischer Darstellung den Antriebsmechanismus.Fig. 4 shows a schematic representation of the drive mechanism.

Auf einer in achsialer Richtung hin und her beweglichen Welle α der Maschine sind Trommeln b, c, d festgekeilt, von denen jede eine Anzahl Gleitstücke e trägt, welche auf die Mantelfläche der Trommel verteilt und in Längsnuten verschiebbar angeordnet sind. Jedes Gleitstück e kann mittels einer Feinstellschraube β¹ in seiner Nut verschoben werden und besitzt eine Anzahl mit Gewinde versehener Bohrungen g, welche zur Aufnahme von Kopfschrauben h, die als Anschläge dienen, bestimmt sind. Drums b, c, d are wedged tightly on a shaft α of the machine that can move back and forth in the axial direction, each of which carries a number of sliders e , which are distributed over the outer surface of the drum and arranged to be displaceable in longitudinal grooves. Each slider e can be moved in its groove by means of a fine adjustment screw β ¹ and has a number of threaded holes g which are intended for receiving head screws h which serve as stops.

Jede der Trommeln b, c, d ist zur Einwirkung auf einen der beweglichen Maschinenteile bestimmt. Zu diesem Zwecke ist tangential zur Trommel b ein Hebel k angeord-Each of the drums b, c, d is intended to act on one of the moving machine parts. For this purpose, a lever k is arranged tangentially to the drum b

Claims

net, the pivot point of which is on the machine frame i . The free end of this lever is hinged to a rod I and this in turn is hinged to the free end of a lever η which can be rotated in m.

K on the lever is ο means of a nut screwed a stop piece of p, in such a way that, when the shaft with the drums α shifted in the axial direction, one of the

ίο stop screws h hits against the stop piece p and gives the lever k a certain angular movement. The movement of the lever k is transmitted to the lever η and from the latter to the tailstock q, which is connected to the lever η in an appropriate manner.

In a similar way, the spindle s is displaced in the axial direction through the drum d, the stops of which act on the lever t. The latter sits firmly on the shaft u, which on the other hand carries an arm ν whose free end is provided with a pin w which penetrates into a recess χ of the drive roller y.

The spindle s, on which z. B. a tap is attached, is given a rotating movement by the roller y , while it is given the feed or return movement through the drum d .

Fig. 3 shows another embodiment of the device. This is about from the drum c from a graver 1 to the necessary feed or return movement To give.

The burin is fixed on a slide 2 which is moved back and forth by a screw spindle 3. A toothed wheel 4, which is in engagement with a toothed sector 5, which forms one arm of a two-armed lever rotatably mounted in FIG. 6, is firmly seated on this spindle. The other arm 7 of this lever engages with a pin in a slot 8 of a cross slide 9, which is set in motion by the stops of the drum c by means of a lever system 10, 11. In addition to its axial movement, the shaft α also receives a periodic switching movement. The drive of this shaft is shown schematically in FIG. A disk 12, which is keyed onto the shaft α , engages in a thumb groove 13 of a roller 14.

The latter is wedged onto a shaft 15

^: and connected to a gear wheel 16 which is driven by a worm 17.

A ratchet wheel 18 is also seated on the shaft α , which takes the shaft α with it by means of a wedge 19, but the latter allows it to move in the axial direction independently of the wheel 18.

A thumb 20 attached to the shaft 15 engages with each revolution of the shaft 15 into the toothing of the ratchet wheel 18 and switches the latter on by one partial revolution.

The drive of the shaft α could of course take place in any other suitable manner.

The device works as follows:

When the machine is started, the worm 17 also drives the shaft 15 and the roller 14 is set in rotation.

The thumb groove 13 now causes an axial displacement of the shaft α with the stop drums b, c, d seated on it.

Are the stop screws h z. B. been set so that only the stop piece p of the lever t is in the path of a stop screw, it is readily apparent that only the spindle s is moved as a result of this axial displacement of the shaft α , while the tailstock q and the carriage 2 remain in their rest position.

The advance of the shaft - takes place during the first half revolution of the roller 14; during the second half revolution of the roller, the shaft α then moves back to its original position. The spindle s thus also resumes its initial position through the action of a spring 21. The spring 21 could optionally be replaced by a stop screw seated on the drum d , which would come into action when the shaft a moves backwards.

If the roller 14 has made a full revolution, the thumb 20 switches the wheel 18, the shaft α and the drums on in the direction of rotation. As a result, the stops of one of the drums c or b come into the operative position, so that either the carriage 2 or the tailstock q comes into operation with the next revolution of the roller 14.

In general, the machine is designed so that the various, automatically moved Parts work one by one; however, two or more of these can also be used Parts act at the same time, e.g. B. certain burins in automatic lathes.

The number of machine parts controlled in the manner described can be any be. The stops can also be used in any other suitable manner instead of on drums be arranged.

Godfather ν τ-Α ν saying:

Drive device for automatically moving machine parts, especially the tool slide in automatic and semi-automatic machine tools, characterized in that each of the automatically moved machine parts through a

drum (b, c, d) fitted with adjustable stops (h) is controlled, with all drums fixed on a common shaft (a) and periodically set in an axial to-and-fro movement for the purpose of driving the machine parts to be moved on the other hand, alternately with the mentioned movement, perform a switching movement around its axis so that the machine parts to be moved come into action in a desired sequence by previously setting the stops (A).

For this purpose ι sheet of drawings.