DE80240C

DE80240C -

Info

Publication number: DE80240C
Application number: DENDAT80240D
Authority: DE

Description

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KAISERLICHESIMPERIAL

PATENTAMTPATENT OFFICE

Gegenstand vorliegender Erfindung bildet eine Maschine zur Herstellung von Metallschraubenmuttern ; dieselbe soll selbsttätig vor sich gehen, wobei zuerst das Ausbohren des Loches bis auf eine gewisse Tiefe vorgenommen und darauf das Schneiden des Gewindes von der Maschine selbst ohne alle Handgriffe bewerkstelligt wird.The present invention provides a machine for manufacturing metal screw nuts ; the same should take place automatically, whereby first the drilling out of the Hole made to a certain depth and then cutting the thread of the machine itself is accomplished without any manual effort.

Das Wesentliche dieser Einrichtung besteht hauptsächlich in der Anwendung zweier Werkzeughalter, die in einem gemeinsamen Schlitten angeordnet sind, welcher durch eine Curvenscheibe und die entsprechenden Zwischencylinder gehoben und gesenkt werden kann, so dafs die vorhandenen beiden Werkzeuge abwechselnd auf die gleiche Stelle des Werkstücks wirken können. Als neu und eigenthümlich gilt auch die Einrichtung zum beliebigen Einstellen der Tiefe des Bohrloches, sowie des Vorschubes des Schneidezeuges.The essence of this device consists mainly in the application of two Tool holder, which are arranged in a common carriage, which by a Cam plate and the corresponding intermediate cylinder can be raised and lowered so that the two existing tools alternate on the same place on the workpiece can work. The facility for arbitrary setting is also considered new and peculiar the depth of the drill hole and the feed rate of the cutting tool.

Die beiliegende Zeichnung veranschaulicht eine gemäfs vorstehenden Angaben eingerichtete Maschine inThe accompanying drawing illustrates one set up in accordance with the above information Machine in

Fig. ι in einer Seitenansicht und inFig. Ι in a side view and in

Fig. 2 in einer Stirnansicht und theilweisem Schnitt.Fig. 2 in a front view and partial section.

Die Hauptwelle B ist im Gestell A gelagert und nimmt die zum Bewegen der Mechanismen erforderlichen Curvenscheiben auf. An dem auf Gestell A* stehenden Bock C ist eine lothrechte Führungsleiste C¹ angebracht, an welcher der Schieber oder Schlitten auf- und niedergleitet. Von oben drückt eine Feder E gegen den Schieber, welcher einen nach unten durch eine Oeffnung im Tisch A^ reichenden Arm D¹ besitzt, der mit einer Reibungsrolle D² ausgestattet ist. Diese Rolle rollt auf der Umfläche der Curvenscheibe F. The main shaft B is mounted in the frame A and accommodates the cam plates required to move the mechanisms. A perpendicular guide bar C ^{1 is} attached to the stand C standing on the frame A * , on which the slide or carriage slides up and down. A spring E presses from above against the slide, which has an arm D ¹ which extends downwards through an opening in the table A and which is equipped with a friction ^{roller D 2} . This roller rolls on the surface of the cam disk F.

In dem Schieber D sind zwei Spindeln G und H parallel über einander derart gelagert, dafs sie in ihrer Längsrichtung verschoben werden können. Die Enden G¹ bezw. H¹ sind hülsenartig ausgebildet zur Aufnahme eines Bohrers, Gewindeschneiders oder eines anderen Werkzeuges. Soll beispielsweise eine Mutter oder dergl. gefertigt werden, wobei erst ein Längsloch gebohrt und dann ein inneres Gewinde einzuschneiden ist, so wird der Bohrer in den Werkzeughalter G¹ und der Gewindeschneider in den Halter H¹ gesteckt, durch die Federn G² und H² werden die Spindeln G und H in der dargestellten Stellung mit Bezug auf den Schieber D gehalten. Mit Hülfe der im Bock C befindlichen Stellschrauben D³ kann die tiefste Stellung des Schlittens D derart geregelt werden, dafs die Spindel H genau in Richtung des Arbeitsstückes gehalten wird.In the slide D two spindles G and H are mounted parallel to each other in such a way that they can be moved in their longitudinal direction. The ends G ¹ respectively. H ¹ are designed like a sleeve to accommodate a drill, thread cutter or other tool. If, for example, a nut or the like is to be manufactured, first drilling a longitudinal hole and then ^{cutting an internal thread, the drill is inserted into the tool holder G 1} and the thread cutter into the holder H ¹ , through the springs G ² and H ² the spindles G and H are held in the position shown with respect to the slide D. With the aid of the adjusting screws D ^{3 located in} the bracket C , the lowest position of the slide D can be regulated in such a way that the spindle H is held precisely in the direction of the workpiece.

Um die Werkzeuge dem Arbeitsstück zu nähern, ist eine Schiene J in der Längsrichtung verschiebbar im Bock C gelagert. Diese Schiene / kann durch die Daumen K auf der Welle B unter Vermittelung des bei L¹ drehbaren Hebels L bethätigt werden, welcher zu diesem Zweck am Ende mit einer Reibungsrolle -L² ausgerüstet ist. Das andere Ende des Hebels L greift in einen geneigten Schlitz J¹ an der Schiene J. Durch Nuth und Feder oder in anderer beliebiger Weise kann die Schiene J gegen Drehung gesichert werden, deren Bewegung durch eine am Arme J² sitzende Stellschraube begrenzt wird. Ferner sitzt in diesem Arm J² ein mit geriffeltemIn order to bring the tools closer to the work piece, a rail J is mounted in the frame C so that it can be displaced in the longitudinal direction. This rail / can be actuated by the thumbs K on the shaft B by means of the lever L ^{rotatable at L 1} , which for this purpose is equipped at the end with a friction roller -L ^2. The other end of the lever L engages in an inclined slot J ¹ on the rail J. The rail J can be secured against rotation by nut and spring or in any other arbitrary manner, the movement of which is limited by an adjusting screw seated on the arm J ^2. Furthermore, in this arm J ² sits a corrugated

Claims

Head N ¹ provided screw pin N, which lies in the lowest position of the slide D in a line with the spindle H. The return movement of the rail J is mediated by the spring J ³ .

The rotation of the drilling spindle G can be prevented, for example, by a pin which slides in a longitudinal slot on the bracket C. The same spindle is provided with a set screw G ³ , through which the length of the hole to be drilled can be determined. This is done by regulating the path which the pin N must traverse before it engages the spindle G. The following precautions are taken to regulate the forward movement of the thread cutting spindle H:

A sitting on the spindle H pin P comprehended an adjustable stop Q and prevents the rotation of the spindle H, while the tap enters into the pre-drilled hole and penetrates into it, the stop Q is held by a means of screw Q ² fixable clamping element Q. ¹ and is made adjustable by means of an adjusting screw Q ³ in such a way that, when the thread cutting tool has advanced sufficiently far, the pin P has reached the end of the stop and rotation of the spindle H is permitted.

In order to secure the spindle against rotation in the opposite direction when the workpiece is rotated backwards for retraction, a spring-loaded pawl R is arranged, which engages in a corresponding longitudinal groove H ^s on the spindle H.

At a suitable point in time in the working cycle of the machine, the cam disk or the thumb -F lifts the slide D under the mediation of the arm D ¹ , whereby the spindle G with the tool comes into the area of the workpiece. The thumb K then acts on the lever L in such a way that it pushes the rail J forward. During this movement, the pin N comes into contact with the screw G ³ and then also pushes the spindle G forward. A hole of the prescribed length or depth is thereby drilled, the latter being controlled ^{by the screws G 3} and N. Then the thumb K releases the lever L and the drill is withdrawn ^{by the spring G 2.} The spring J ^s also moves the rail / back. The cam plate F then allows the slide D to move downward, which takes place under the mediation of the spring E , so that the spindle H is now brought into line with the drilled hole (FIG. I). The thumb actuates the lever L again and presses the thread cutter into the hole in the workpiece. When the thread is cut and the pin P has slipped off the stop Q, the spindle H can rotate freely about its axis. The thumb K then releases the lever L again and the direction of rotation of the workpiece is reversed. The return movement of the spindle H is assisted by the spring H- ² , and the rotation, as mentioned above, is prevented by the pawl R and the groove H ^s .

The machine can easily be redesigned for the production of screw bolts by removing or setting down the cam disk F and by inserting suitable thread cutters in the head H ^{1 of} the spindle H.

If desired, more than two spindles can be arranged in the slide. which, like those already described, are indicated by suitable curved disks or thumbs of the shaft to be able to handle any requirements that may arise in the To take into account.

Obviously the details of the machine can be altered without being altered the inventive concept is deviated from. :

Sponsorship τ claims:

ι. A machine for the production of nuts, characterized by two tool holders G and H arranged one above the other in a slide D (of which ¹ the former carries a drill, the latter a thread cutting tool), which are supported by a cam disk F and pressure roller Z acting on the slide. ¹ D ² are advanced in such a way that they alternately enter the working position and are guided against the workpiece by a second cam plate K with lever L and arm JJ ' ² with pressure screw JV N ^1.

2. An embodiment of the under i. characterized machine, in which the depth of the borehole of the drill G is changed by the fact that an adjusting screw G ³ ; is arranged on the spindle G ² , and in which the path of the tap if is limited by a pin P fastened in the spindle H. at the end of the path the adjusting piece Q leaves so that the spindle H can rotate freely, the pawl R engaging in the recess H when the spindle is unscrewed in the opposite direction and prevents the spindle from rotating. ;

For this purpose ι sheet of drawings.