SU1423292A1 - Cutting tool with changeable cutting bit - Google Patents

Abstract

The invention relates to metal cutting, in particular to cutting tools. The purpose of the invention is to increase durability by improving the mechanical properties of the plate. In the recess 2, an intermediate element 3 is mounted for movement. On the cutting plate 4 there is a groove, the walls of which are designed to interact with the protrusion 31 on the intermediate element 3, the plate 4 is clamped with screws 5 placed in the holder case 1 parallel to its support surfaces and for engagement with threaded holes of the intermediate member. 2 Il.

Description

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The invention relates to the machining of metals by cutting, in particular, to cutting. tools.

In the known technical solutions, cutting plates are most often soldered to the recess made in the tool holder. In other cases, cutting plates are attached directly to the tool holder or soldered to a clamping cube. The clamp in such cases is carried out by means of a grip that passes through the cutting plate or through the clamping die, or blocks the cutting plate with a rezTsederger, and simultaneously acts over the cutting blade and, therefore, is subject to abrasion under the influence of flying chips; In addition, such a solution to the position of the cutting plate leads to the fact that at the cutting edge it is piled up. It is therefore often the case that heaping chips overlaps the cutting edge, which, if it is removed in time, can cause the blade to break,. When comparing methods of attaching tacks, it is more appropriate to use a method in which the clamps directly clamp the cutting plate, as they do. soldering to the cutting plates as a result of heating during the melting and subsequent cooling, they have lower mechanical properties, because they contain microcracks and internal stress,

The purpose of the invention is to increase durability by improving the mechanical properties of the plate.

The proposed cutting tool is equipped with a replaceable button with a plate fixed by means of a mechanism in a slot made in the holder body. An intermediate element is freely installed in the slot on the contact surface, the entrance to the recess, limited by the contact surface, and on top of the hanging stop opposite the cutting member. records The cutting plate is mounted on the intermediate element. Between the last and the cutting plate, the connection is made in the manner of the protruding one into the other protrusion and pas for. A bolted connection is made between the intermediate element and the holder.

Fig. 1 shows the proposed cutting tool in the assembled condition ;;

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Scientific research institute, general view; 2 shows a tool holder in a disassembled state, a general view,

The cutting plate 4 is provided with a groove 6 on the bottom. It is mounted on an intermediate element 3, provided with a protrusion 7 corresponding to a groove 6. The intermediate element 3 is mounted on

Q plane 8 of contact in slot 2, Intermediate element 3 flows into groove -9, below limited by contact surface 8, and from above with hanging pad 10 protruding against cutting blade 4, In holder 1, saddle 11 is fitted, in which socket 2 Between the intermediate element 3 and the holder 1 there is a bolt connection 5 consisting of several bolts,

A nest 2 is inserted into the saddle 11, and an intermediate element 3 is inserted into its recess 9. to which the blade 4 is applied and in its

5, the groove 6 enters the protrusion 7 of the intermediate element 3. The cutting plate 4 with the aid of the bolted joint 5 presses the support 10, after it, overhangs. what the cutting tool prepared

Q to processing. To change the cutting plate 4, the bolt joint must be loosened. Item 5,

The cutting plate is mounted on the Intermediate element, a protrusion is made between the latter and the blade and a corresponding groove with it, by means of which the cutting plate is pressed against the impending stop, and has a long service life. Its location above the top plane of the holder

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gives the possibility of complete withdrawal;.

shavings. The prismatic shape also allows mass grinding with high productivity. . The clamp is made in the surfaces and provides an easy change of the cutting plate without manipulating the tool holder.

F rmula of the invention Cutting tool with a replaceable cutting plate fixed by means of a mechanism in a slot made in the holder body, characterized in that, in order to increase durability by improving the mechanical properties of the plate, the tool is fitted with

an intermediate element with a protrusion on the surface opposite to the supporting one and threaded holes in the 6oj wall, and on the bearing surface of the cutting plate there is a groove, the protrusion of the intermediate

the element, the fastening mechanism being in the form of screws placed in the holder body parallel to its support surface and designed to interact with the threaded holes of the intermediate element.

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Claims (1)

FIELD OF THE INVENTION A cutting tool with a replaceable cutting insert fixed by a mechanism in a socket made in the holder body, characterized in that, for the purpose of 55 to increase resistance by improving the mechanical properties of the plate, the tool is equipped with an intermediate element mounted in the socket with the ability to move from 1423292 with a protrusion on the surface opposite the supporting, and threaded holes in the side wall, and a groove is made on the supporting surface of the cutting insert with the walls of which interact the protrusion of the intermediate element, and the fixing mechanism is made in the form of screws placed in the holder’s body parallel to its support surface and The values for interaction Vym threaded holes of the intermediate element.