DE19636869A1

DE19636869A1 - Milling machine for stone-like materials

Info

Publication number: DE19636869A1
Application number: DE19636869A
Authority: DE
Inventors: Nikolaus Wendel
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-05
Filing date: 1996-09-11
Publication date: 1998-03-12

Abstract

The milling machine has a rotating milling tool with a number of milling chisels (2) around its circumference. A hammering action is induced in one or all of the chisel points through a pneumatic or hydraulic hammering mechanism. The hammering mechanism may comprise pistons (1) enclosed in cylinders (11) and operated by compressed air. The cylinder ends are alternately connected to the air feed and air exhaust sides.

Description

Die Gestaltung nach den Ansprüchen 1 und 2 erlaubt eine besonders einfache und schnelle Montage und Demontage der Meißel als Hauptverschleißteile.The design according to claims 1 and 2 allows a particularly simple and quick assembly and disassembly of the chisels as main wear parts.

Die Ansprüche 3 bis 6 bieten eine besonders einfache, leicht zu fertigende und damit preiswerte Verwirklichung des Bereiches "Kolben, Druckluftkanäle".Claims 3 to 6 offer a particularly simple, easy to manufacture and thus inexpensive realization of the area "pistons, compressed air ducts".

Weitere Einzelheiten und Vorteile des Erfindungsgegenstandes ergeben sich aus der nachfolgenden Beschreibung der zugehörigen Zeichnungen, in denen bevorzugte Ausführungsbeispiele mit den dazu notwendigen Einzelheiten und Einzelteilen dargestellt sind. Es zeigen:Further details and advantages of the subject of the invention result from the following description of the accompanying drawings, in which preferred Exemplary embodiments with the necessary details and individual parts are shown. Show it:

Fig. 1 ein Seitenansicht in axialer Richtung sowie eine Draufsicht in radialer Richtung eines montierten Meißels; Figure 1 is a side view in the axial direction and a plan view in the radial direction of an assembled chisel.

Fig. 2 einen Schnitt in radialer Ebene durch die Mitte der Kolben durch einen kompletten Fräser. Fig. 2 shows a section in a radial plane through the center of the piston through a complete milling cutter.

Die Fräserdrehrichtung in beiden Zeichnungen ist im Uhrzeigersinn.The direction of milling in both drawings is clockwise.

Fig. 1 zeigt eine mögliche Gestaltung des zurückfedernden Meißelanschlages. Er besteht aus einem Zylinderstück (4), das in einer Nut (5) geführt wird und in beide seitlichen Meißelführungen (2) hineinragt. In der Mitte ragt aus diesem Zylinderstück (4) ein zylindrischer Führungsstab (6), um den eine Spiraldruckfeder gelegt ist und der am anderen Ende zwischen zwei Bolzen (7) gelagert ist, an denen sich auch die Feder (8) abstützt. Fig. 1 shows a possible design of the spring-back chisel stop. It consists of a cylinder piece ( 4 ) which is guided in a groove ( 5 ) and protrudes into both side chisel guides ( 2 ). In the middle, a cylindrical guide rod ( 6 ) protrudes from this cylinder piece ( 4 ), around which a spiral compression spring is placed and which is mounted at the other end between two bolts ( 7 ), on which the spring ( 8 ) is also supported.

Nut (5) und Federweg der Feder (8) müssen so lang sein, daß nach dem Einschieben des Werkzeuges (9) zwischen Anschlag (4) und der hinteren Anschlagnase des Meißels (1) der Meißel um seine Drehachse (3) herausgedreht werden kann.The groove ( 5 ) and spring travel of the spring ( 8 ) must be so long that after inserting the tool ( 9 ) between the stop ( 4 ) and the rear stop nose of the chisel ( 1 ), the chisel can be unscrewed about its axis of rotation ( 3 ) .

Claims

1. Milling machine with a rotating milling tool with milling chisels distributed over the circumference, separated from the striking part, an impact effect being induced in some or all chisel tips with a pneumatically or hydraulically driven striking system and the further claims of the main application and the first additional application, characterized in that a rear chisel stop ( 4 ) is resiliently mounted and can be moved away from the chisel approximately in the circumferential direction.

2. Apparatus according to claim 1, characterized in that the chisel ( 1 ) and the chisel stop ( 4 ) are designed so that a preferably curved tool ( 9 ) allows disassembly of a chisel ( 1 ) by simply pushing in and bending and assembly by turning the chisel ( 1 ) around its axis of rotation ( 3 ) and pressing it against the milling cutter body, the stop ( 4 ) being pushed back automatically in this area by the shape of the chisel ( 1 ) and automatically engaging again and securing the chisel.

3. Apparatus according to claim 1, characterized in that the pneumatic impact drive consists of two free-flying pistons ( 12 , 13 ) and the internal piston ( 13 ) is flung back and forth by compressed air and exerts the blow.

4. The device according to claim 3, characterized in that both pistons have the same diameter and run in the same bore ( 10 ).

5. The device according to claim 4, characterized in that the pistons run in a cylinder sleeve ( 14 ) inserted into the bore ( 10 ).

6. The device according to claim 1, characterized in that the bore ( 10 ) for the pistons ( 12 , 13 ) and the bores for the air connections (outer connection 11) are placed so that all holes can be drilled from the outside without each other to damage.