DE7532482U - TURNING CHISEL - Google Patents

Description

Utility model registration

UGINE CARBONE

92j rue Ampere

38 GRENOBLE - GARE / France

Turning tool

The invention relates to a lathe chisel as a particular cutting tool, consisting of a chisel holder and a chisel shaft with a chisel body arranged in it.

A lathe chisel is known in which a cylindrical chisel shank is rotatably arranged in the bore of a chisel holder fixedly attached to a tool carrier, the chisel shank and the bore receiving it being associated with one another
Shoulder seats to absorb the

7532482 02/19/76

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Andregewski, Honice, Gesfnuysen & Mosch, patent attorneys in Essen

have standing axial forces and securing means are provided for axially retaining the chisel shaft. At this known embodiment is in the bore of the bit holder a sleeve made of hardened and abrasion-resistant material supporting itself against the propulsion direction and against movements in the axial direction Direction secured rotatably arranged. It is also provided that the chisel shank within the sleeve is opposite to the propulsion seal Correctly secured against movements in the axial direction is rotatably arranged. - This well-known construction is after ~ 3ilig, as it on the one hand the additional use requires a sleeve for the rotatable mounting of the chisel shaft, on the other hand, the ingress of dirt between the chisel holder and the sleeve and between the chisel shank and the sleeve does not is excluded. This can soon become the plague devouring the chisel shaft and thus lead to extreme wear and tear. Because in the case of a lathe tool, the rotatable mounting of the bit shaft and so that the chisel body just to a uniform and therefore relatively low wear on the chisel body all around reach. However, this effect can no longer be obtained with a seized chisel shaft. - Want this cons avoid the invention.

The invention is based on the object of creating a lathe chisel as a cutting tool in particular, which is extremely simple and functional construction is characterized, in particular by dirt-free storage of the chisel body.

The invention solves this problem with a lathe tool of the generic type in that the chisel body is designed as a cap that can be slipped onto the chisel shank and on the chisel shank with intermediate

7532482 19.Oi.7e

• a · ■ ·

Andrejewski, Honke, Gesthuysen & Maseh, patent attorneys in Essen

circuit at least one securing means is rotatably mounted. - These measures of the invention have the consequence that under waiver The chisel body is rotatably mounted directly on the chisel shaft on an otherwise necessary sleeve and in the embodiment as a cap, the recovered goods in such a way flows away that dirt penetrates between the chisel body or cap and chisel shaft is excluded. Polar will also be certainly avoided seizing of the chisel body on the chisel shaft. In fact, with the inventive Cut the lathe chisel dry without fear of malfunctions are.

Further features essential to the invention are listed below. The invention provides that the chisel body has an enlarged annular or cylindrical recess in the cap area and the securing means fixed on the chisel shank partially engages therein.

According to a proposal of the invention, which is of independent importance, it is provided that the chisel shaft has a conical, Has hemispherical or flat bearing head and on it the chisel body with corresponding bearing surfaces under formation a lubricating bearing is supported. The lathe chisel according to the invention thus allows due to the cap-like design of the Chisel body attached to the chisel shank, a lubricatable bearing for the chisel body. This makes it particularly easy to move guaranteed, particularly uniform and consequently locally reduced wear is achieved. Are according to the invention Lubricant nests arranged between the bearing head and the bearing surfaces

SSWSKSSEMffiS / GffiiiäBSa ^

Alterjewski, Honke, Gesthuysen & Masch, patent attorneys in Essen

which serve to hold a lubricant. The security device is expediently as one or more safety rings arranged one behind the other at predetermined intervals on the chisel shank, z. B. formed snap rings. So even if the cap-shaped chisel body under extreme loads over a the safety ring should be removed, it is locked by the next safety ring, which is in the corresponding The ring groove of the chisel shaft moves up and is carried along by the chisel body, especially since the safety rings are partially into the ring-like or cylinder-like recess of the chisel body intervention. Basically, there is the possibility that the chisel shank and chisel holder are designed as a single component and on an assigned tool carrier can be welded on. The chisel shank can also be a hardened conical shank in a corresponding one Drilled hole in the chisel holder.

The advantages achieved by the invention are essentially to be seen in the fact that a lathe chisel is realized which is thrown through extremely simple and functional construction is characterized, in particular, a dirt-free and lubricatable mounting of the bit body Guaranteed on the chisel shaft, so that as a result a plague eating of the chisel body on the chisel shaft is excluded and extremely low wear can be achieved through even wear distribution over the circumference of the bit body.

In the following the invention is explained in more detail with reference to a drawing showing only one embodiment; show it

1 shows a lathe tool according to the invention in vertical section and

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Andregewski, Honke, Gesthuysen & Masch, patent attorneys in Essen

Pig. 2 shows a horizontal section through the subject according to Pig. I. according to line A-A.

In the figures, a lathe chisel is shown as a particular cutting tool, which in its basic structure consists of a chisel ^! holder 1 and a chisel shank 2 with chisel body 3 arranged therein. The chisel body 3 is designed as a cap that can be slipped onto the chisel shank 2 and is rotatably mounted on the chisel shank 2 with at least one securing means K interposed. The chisel body 3 has an enlarged annular or cylindrical recess 5 in the cap area, in which the securing means 4 fixed on the chisel shank 2 partially engages. The chisel shank 2 has a conical, hemispherical or flat bearing head 6, on which the chisel body 3 is supported with corresponding bearing surfaces 7 to form a lubricating bearing. Lubricant nests 8 can be arranged between the bearing head 6 and the bearing surfaces 7. The securing means 4 is arranged as one or more at predetermined intervals one behind the other on the chisel shank 2, z. B. formed snap ring. Chisel shank 2 and chisel holder 1 can be designed as a unitary, that is, one-piece component. However, an embodiment is shown, according to which the conical chisel shank 2 is driven into a corresponding bore 9 of the chisel holder 1.

7532482 I3.ez.76

Claims (6)

Ill * * * I I Honke, Gesfhuysen & Maseh, PeatsrttanwäSfe ire Essen Sohutzrechte j 1. Lathe chisel as a particular cutting tool, consisting of a Chisel holder and a chisel shaft with chisel body arranged therein, characterized in that the chisel body (3) is designed as a cap which can be pushed onto the chisel shank (2) and is rotatably mounted on the chisel shank (2) with the interposition of at least one securing means (4). 2. Lathe chisel according to claim 1, characterized in that the chisel body (3) in the Kappenbereloh an enlarged annular or has a cylindrical recess (5) and the securing means (4) fixed on the chisel shank (2) partially engages therein yy. Lathe chisel according to Claim 1 or 2, characterized in that the chisel shank (2) has a conical, hemispherical or flat bearing head (6) and the chisel body (3) with it corresponding bearing surfaces (7) is supported to form a lubricating bearing. 4 ·. Lathe chisel according to one of Claims 1 to 3 »characterized in that that between the bearing head (6) and bearing surfaces (7) lubricant nests (8) are arranged. 5. Lathe tool according to one of claims 1 to 4, characterized in that that the securing means (4) as one or more in vor given intervals one behind the other on the chisel shank (2) arranged safety rings, z. B. snap ring is formed. 6. lathe tool according to one of claims 1 to 5 »marked thereby, draws that chisel shank (2) and chisel holder (1) as a one-piece ^ Component are executed.