DE127148C

DE127148C -

Info

Publication number: DE127148C
Application number: DENDAT127148D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Mit vorliegender Schrämmaschine wird der Schräm durch einen bohrenden Fräser in der Weise hergestellt, dafs zunächst ein Bohrloch erzeugt und dann von diesem aus der Schräm ausgefräst wird. Während der Herstellung des Bohrloches bewegt sich der Bohrer bis auf eine gewisse Länge unabhängig von anderen Bewegungsorganen. Soll dann das Bohrloch zu einem Schräm erweitert werden, so wird die Bohrspindel mit einer zweiten, aber hohlen Spindel, durch welche sie hindurch geht, gekuppelt. Eine auf der Hohlspindel sitzende Schnecke steht im Eingriff mit einem Schneckenrade, welches einerseits beweglich auf einer dem zu unterschrämenden Stofs parallel gelagerten Schraubenspindel sitzt, andererseits aber mit dem die Hohlspindel führenden Schlitten verbunden ist. Infolge der Kuppelung der Bohrspindel mit der sie umhüllenden Hohlspindel verschiebt sich also der Führungsschlitten und mit ihm die Bohrspindel mit dem Fräser seitwärts.With the present cutting machine, the cutting is made by a drilling cutter in the Made in a manner that first creates a borehole and then creates the cutting from this is milled out. During the production of the borehole, the drill moves up to a certain length independent of other locomotor organs. Should then the borehole be expanded to a Schräm, so the drill spindle with a second, but hollow spindle through which it passes, coupled. One on the hollow spindle sitting worm is in engagement with a worm wheel, which is movable on the one hand sits on a screw spindle mounted parallel to the material to be cut behind, on the other hand but is connected to the carriage leading the hollow spindle. As a result of the coupling of the drilling spindle with the hollow spindle surrounding it, so the guide carriage moves and with it the drilling spindle with the milling cutter sideways.

In der Zeichnung ist diese Schrämmaschine beispielsweise dargestellt, und zwar in Fig. 1 in Draufsicht, in Fig. 2 in Seitenansicht, in Fig. 3 im Längsschnitt und in Fig. 4 bis 7 in Einzelheiten.This cutting machine is shown for example in the drawing, namely in FIG. 1 in plan view, in Fig. 2 in side view, in Fig. 3 in longitudinal section and in Fig. 4 to 7 in Details.

An den Spannsäulen aa, die vor dem abzuschrämenden Kohlenstofs vertical aufgestellt werden, ist der Rahmen b verstellbar befestigt. Auf diesem führt sich der Schlitten c mit den Lagern für die hohle Spindel/(Fig. 1). Innerhalb des Rahmens trägt diese die Schnecke if und an ihrem Ende das Kuppelschlofs g, das die zweitheilige, durch Schraube k zusammenprefsbare Klemmmutter m enthält (Fig. 7). The frame b is adjustably attached to the tensioning columns aa, which are set up vertically in front of the carbon to be cut off. The slide c with the bearings for the hollow spindle / (Fig. 1) is guided on this. Within the frame, this carries the worm if and at its end the dome lock g, which contains the two-part clamping nut m which can be compressed by screw k (FIG. 7).

In der hohlen Spindel f liegt die Bohrspindel /?, die an einem Ende den Bohrerfräser z, am anderen Ende die Handkurbel q trägt und auf ihrer ganzen Länge oder auf einem Theile derselben mit Gewinde versehen ist. Am hinteren Ende ist auf eine gewisse Länge hin ihr Querschnitt quadratisch, sie bildet also hier ein Vierkant.In the hollow spindle f lies the drilling spindle /? Which carries the drill bit z at one end and the hand crank q at the other end and is threaded over its entire length or part of it. At the rear end, its cross-section is square for a certain length, so it forms a square here.

Das Vierkant dient zum Verkuppeln der Bohrspindel mit der hohlen Spindel f. Zu diesem Zwecke ist in dem Kuppelschlofs g eine Flügelschraube / angeordnet, die innerhalb des Schlosses mit einem flachen Fufs (Fig. 6) von entsprechender Ausdehnung versehen ist. Dieser kann so weit zurückbewegt werden, dafs die Bohrspindel sich frei bewegen kann, aber auch so weit vorbewegt werden, dafs er sich, wenn das Vierkant in das Schlofs eingetreten ist, fest auf eine von dessen Flächen auflegt und dadurch eine Vereinigung zwischen den beiden Spindeln herstellt.The square is used to couple the drilling spindle to the hollow spindle f. For this purpose, a wing screw / is arranged in the dome lock g , which is provided with a flat foot (Fig. 6) of corresponding extent within the lock. This can be moved back so far that the drilling spindle can move freely, but it can also be moved forward so far that, when the square has entered the castle, it rests firmly on one of its surfaces and thereby a union between the two spindles manufactures.

Der auf dem Rahmen b verschiebbare Schlitten c nimmt in seinem oberen Theile mit seinen hülsenförmigen Ansätzen die Spindel f auf und besitzt in seinem unteren Theile eine Aussparung für die Vorschubspindel e (Fig. 2).The slide c , which can be displaced on the frame b , receives the spindle f in its upper part with its sleeve-shaped projections and has a recess for the feed spindle e in its lower part (Fig. 2).

In dem Rahmen b (Fig. 3 und 4) ist senkrecht zur Bohrspindel h die Gewindespindel e gelagert, die durch das Handrad ρ gedreht werden kann. Auf ihr sitzt das mit dem Schlitten c fest verbundene Schneckenrad d In the frame b (Fig. 3 and 4), the threaded spindle e is mounted perpendicular to the drilling spindle h , which can be rotated by the handwheel ρ. The worm wheel d, which is firmly connected to the carriage c, sits on it

Claims

in such a way that it screws itself back and forth on the spindle as it rotates. The spindle e can be determined by the clamping screw ο and the jaw r (Fig. 4 and 5), whereby in a known manner the advance of the carriage BEZW. of the cutting tools regulated can be.

The machine works in the following way:
After the tensioning columns α are firmly pressed against hanging and lying objects and the frame b is attached to the tensioning columns at the height at which the cutting is to be made, the drilling spindle is set in motion by turning the hand crank q (Fig. 1 and 2) . As a result, the milling cutter bores into the carbon to be cut. The drill spindle h advances in this way until its square has reached the tubular lugs of the drill lock g . Now the wing screw / with its plate η is pressed firmly against the square and in this way the hollow spindle / is coupled to the drilling spindle. By further rotation of the hand crank is effected, that d the worm wheel with the worm of the Schrämspindel t f meshes, also rotates and, as it sits with thread on the feed screw e, to defer to these identified feed screw. The carriage c , which is firmly connected to the worm wheel d, is entrained and through it also the spindle f inserted through it, which thus not only receives a rotating movement about its axis, but also a lateral movement. This enables the cutter i to cut into the carbon with its toothed spiral and, starting from the borehole, to form a bevel whose depth and height are equal to the length or. the diameter of the milling cutter and its length depends on that of the feed spindle. If the cutting edge is to be deepened, a longer milling cutter is to be used - whereby the clamping nuts m are opened by means of the wing screw k (Fig. 7) - and the machine is to be screwed back on the feed spindle by turning the handwheel. When you have reached the point of the first borehole, you can start drilling and cutting with the longer milling cutter. Makes the unterschrämende Kohlenstofs to a too great resistance, the feed is slowed r by solving the jaw.

Once the cut has been made to the required depth, the same machine can without having to change their place, drill the necessary boreholes for shooting down of carbon, of which it is certain that they are never deeper than the cut, if not a longer one Drill is particularly changed.

The whole machine is built to be light and easy to handle and, after it has been set up, can be used by can be served by a single worker.

Patent-A ν saying:

Hand-held cutting machine which can be used as a hand-held rotary drilling machine and has a drill bit provided with milling teeth, characterized in that the drilling spindle (h), after a drill hole has been made, is expanded to form a cut with the hollow shaft used to guide it ff) by pressing the shaft in one of the projections on the shaft ff) guided screw (I) is coupled against the square (v) of the drilling spindle, whereby the spindles ff and h) , which now form a whole, are in a known manner by turning the crank fq) and by means of the worm ft) and des, which is stuck on the shaft ff) on the feed spindle (e) movable, with which the spindles ff and h) leading carriage fc) firmly connected worm wheel fd) can be moved laterally on the feed spindle (e) , wherein the feed can be regulated in a known manner.

1 sheet of drawings.