DE262616C

DE262616C -

Info

Publication number: DE262616C
Application number: DENDAT262616D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

-JKi 262616-KLASSE 46 d. GRUPPE -JKi 262616- CLASS 46 d. GROUP

Rotations-Steuerschieber.Rotary control valve.

Patentiert im Deutschen Reiche vom 2. Mai 1912 ab.Patented in the German Empire on May 2, 1912.

Die Erfindung betrifft eine Bohrmaschine, welche durch ein Druckmittel, wie z. B. Druckluft, betrieben wird und mit achsial verschiebbarem Steuerschieber für die Arbeitskolben ausgerüstet ist. Die Erfindung besteht darin, daß der Rotationsschieber durch die achsiale Verschiebung zugleich gedreht wird, so daß die Stellung der Steueröffnungen derart verändert wird, daß eine Umsteuerung des Ganges der ίο Bohrmaschine erfolgt.The invention relates to a drilling machine, which by a pressure medium, such as. B. compressed air, is operated and equipped with axially displaceable control spool for the working piston is. The invention consists in that the rotary slide by the axial displacement is rotated at the same time, so that the position of the control openings is changed so that a reversal of the gear ίο Drill is done.

Die Umsetzung der achsialen Verschiebung des Schiebers in eine Drehbewegung läßt sich mit Vorteil durch Drallzüge erzielen, welche einerseits auf der Schieberspindel, andererseits in dem Antriebsrade des Rotationsschiebers eingeschnitten sind, welches seinerseits gegen achsiale Verschiebung gesichert ist. Die Verschiebung des Schiebers in achsialer Richtung kann in einfacher Weise durch Entlastung der einen Schieberstirnseite bewerkstelligt werden. The implementation of the axial displacement of the slide in a rotary movement can be achieve with advantage by twisting pulls, which on the one hand on the slide spindle, on the other hand are cut in the drive wheel of the rotary valve, which in turn against axial displacement is secured. The displacement of the slide in the axial direction can be accomplished in a simple manner by relieving the one slide face.

Auf der Zeichnung sind drei verschiedene Ausführungsformen der Erfindung beispielsweise dargestellt.
Es zeigenIn the drawing, three different embodiments of the invention are shown by way of example.
Show it

Fig. ι den Längenschnitt,Fig. Ι the longitudinal section,

Fig. 2 den Querschnitt einer mit dem neuen Schieber ausgerüsteten Bohrmaschine,2 shows the cross section of a drilling machine equipped with the new slide,

Fig. 3 eine Einzelheit, die
Fig. 4, 5 Abarten des Schiebers.Fig. 3 shows a detail that
Fig. 4, 5 variants of the slide.

Bei allen Ausführungsformen weist der hohlzylindrische Rotationsschieber 1 in seiner Wandung Ausschnitte 2 für den Zutritt des Druckmittels nach seinem hohlen Innern auf. Die Ausschnitte 2 stehen durch eine Nut 3 miteinander in Verbindung, welche rings um den Schieber herum und über einen Ausschnitt 4 der Schieberbüchse 5 reicht, so daß das Druckmittel durch den Ausschnitt 4 bei jeder Stellung des Schiebers nach dem Schieberinnern gelangen kann. Durch die weiteren Schlitze 6 des Schiebers 1 strömt das Druckmittel gemäß Fig. 2 nach Öffnungen 7 der Schieberbüchse 5 und über Nuten 8 nach Kanälen 9, welche in die Arbeitszylinder 10 führen, die paarweise übereinander angeordnet sind. Die Arbeitszylinder 10 liegen zu beiden Seiten des Schiebers 1, und ihre Auspuffkanäle 36 münden nach den Außenseiten der Zylinder, so daß das verbrauchte Druckmittel unmittelbar nach entgegengesetzten Seiten der Maschine durch Kopfschrauben 11 auspuffen kann, deren Schaft eine bis zum Schraubenkopfe reichende, auf der Zeichnung nicht dargestellte Längsbohrung aufweist, in welche mehrere quer durch den Schraubenkopf hindurchgehende Querbohrungen 13 münden. Durch die an den Stirnenden des Schiebers 1 vorhandenen Öffnungen 14 kann das Druckmittel die verschieden großen wirksamen Druckflächen der Schieberstirnseiten belasten.In all embodiments, the hollow cylindrical rotary slide 1 has in its wall Cutouts 2 for the access of the pressure medium to its hollow interior. the Cutouts 2 are connected to each other by a groove 3, which is around the Slide around and over a cutout 4 of the slide sleeve 5 extends so that the pressure medium can reach the inside of the slide through the cutout 4 in any position of the slide. Through the other slots 6 of the slide 1, the pressure medium flows according to FIG. 2 to openings 7 of the slide sleeve 5 and over grooves 8 to channels 9, which lead into the working cylinder 10, the are arranged in pairs one above the other. The working cylinders 10 are on both sides of the Slide 1, and its exhaust ducts 36 open to the outside of the cylinder, see above that the used pressure medium immediately to opposite sides of the machine can exhaust through head screws 11, the shaft of which extends up to the screw head, has in the drawing, not shown longitudinal bore, in which several transversely Transverse bores 13 passing through the screw head open. Through the at the front ends of the slide 1 existing openings 14, the pressure medium can be different load large effective pressure areas on the slide faces.

Bei dem Ausführungsbeispiele der Fig. 1 ist die Schieberspindel 15 mit dem Schieber 1 zu einem starren Ganzen verschraubt und weist an ihrem dickeren, durch den Deckel 16 des Schiebergehäuses 17 hindurchragenden EndeIn the exemplary embodiment in FIG. 1, the slide spindle 15 with the slide 1 is closed screwed to a rigid whole and has at its thicker, through the cover 16 of the Slide housing 17 protruding end

Claims

Drallztige i8, in which corresponding trains engage in the bore of the gear ig, which engages with a further, internal toothing having gear 20, which is attached to the drilling spindle 21 and is rotated by the pinion 23 fixed on the crankshaft 22. The axial displacement of the gear 19 is prevented by the bridge 24, which is pushed loosely over the twist end of the slide spindle and which is fastened to the machine housing in a suitable manner. In order to achieve the relief of the one slide side required for the axial displacement of the slide 1, an opening 25 is provided at that end of the slide sleeve 5 which is located next to the slide end face 35 having the larger effective pressure surface, which according to FIG. 3 follows a channel 26 leads, which opens at a vent valve 27 located next to one handle 28 of the drill, the valve cone 29 of which is usually pressed onto its seat by a coil spring 32 pressing on a collar 30 of the valve rod 31 and the pressure of the pressure medium, but by pressure the knob-like end 33 of the valve rod 31 can be raised. By lifting the valve 29, the larger effective pressure area of the. a slide face 35 are relieved so that the slide 1 is displaced and rotated at the same time by the pressure of the pressure medium acting unabated on its other face in the slide sleeve 5, because the twisting end of the slide spindle 15 must slide along in the trains of the gear 19. Both . In the illustrated embodiments, the slide is rotated by about 40 °, so that a pair of working pistons is, as it were, skipped over with respect to the supply of pressure medium and the drilling machine must be reversed. As can be seen from FIGS. 4 and 5, the twist pulls need not necessarily be attached to the hub of the gear 19. To z. B. connect the slide spindle in the usual way with its drive wheel and to be able to seal securely against the slide housing, the spindle end inserted in slide 1 can also be connected to the slide by twisting pulls 18, as shown in FIG Slide 1 fixed spindle 15 fixedly connected gear 19 according to FIG. 5 have teeth 40 directed obliquely to the spindle axis, which can be axially displaced in the tooth gaps of their driving wheel. By means of such and similar modified devices, the rotary movement of the slide can also be derived from its axial movement without affecting the essence of the invention. The change in the pressure on the slide end faces required to move the slide can take place not only according to the illustrated exemplary embodiment by relieving the larger effective face, but also by loading a face that is usually relieved. Depending on whether there is usually no pressure at all on both end faces of the slider or only one end face is loaded, the slider end faces can be the same size, or the pressure required to move the slider can be exerted on the larger effective end face. In the latter case, the pressure, as is the case with the usual position of the slide in the illustrated embodiment, will have to overcome the pressure of the smaller face when reversing. The loading of the usually relieved end faces of the slide can be achieved in a simple manner by always passing small amounts of pressure medium against the relieved slide sides, which escape through an opening, but must accumulate by closing the opening and load the slide face. The opening can be closed by the finger of the person operating the machine, by a flap or the like. Patent requests:

1. Drilling machine operated by a pressure medium with axially displaceable Rotary slide for controlling the working piston, characterized in that the rotary slide (1) through the axial

. Shift rotated at the same time and thereby the reversal of the machine brought about will. ■

2. Drill according to claim 1, characterized in that the drive wheel (19) of the slide (1) connected to the slide spindle (15) by twisting pulls (18) and is in turn secured against axial displacement.

3. Drill according to claim 1, characterized in that the slide connected to its spindle secured against axial displacement by twisting pulls is.

4. Drill according to claim 1, characterized in that the teeth of the rigidly connected to the slide drive wheel directed obliquely to the sliding axis and move axially into the gaps between the teeth of their driving wheel permit.

5- drill according to claim ι with slide loaded by the pressure medium on both end faces, characterized in that that the slide (i) is moved by changing the pressure loading its end faces.

6. Drill according to claim ι and 5, characterized in that the larger effective pressure surface (35) having end face of the slide (1) for displacement the same is relieved, so that the slide automatically returns to its starting point after the relief has ceased. ■

7. Drill according to claim 1 and 5, characterized in that a smaller one The front face is constantly loaded, while a larger front face is temporarily loaded causing the shift.

8. Drill according to claim 1 and 5, characterized in that for clockwise rotation one, for the counterclockwise rotation the other face of the slide is loaded.

9. Drill according to claim 1, 5 and 7, characterized in that against the slide end faces to be loaded for the purpose of moving the slide are always small Flow quantities of pressure medium, which escape through an opening, but accumulate after the opening is closed, the Load the slider face and have to move the slider.

10. Drilling machine according to claim 1, characterized characterized in that the drive wheel (ig) of the slide (1) by a the drill spindle (21) attached and provided with internal toothing gear (20) driven which together with a pinion (23) fixed on the crankshaft (22) is working.

11. Drill according to claim 1 with arranged approximately at a right angle and the rotary control slide (1) between enclosing working cylinders, characterized in that the exhaust ducts (36) on the outer sides the working cylinder open.

1 sheet of drawings.