RU2363563C1 - Grooving tool and cutting plate for it - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: grooving tool comprises holder, in seat of which that is limited by lower support wall and side support walls, cutting plate is fixed by means of interaction of wedge protrusion with responsive wedge slot, having front surface, lower and side support surfaces for interaction with accordingly lower support wall of seat and side support walls of seat. In order to increase strength of cutting plate and tool, side support surfaces of cutting plate are installed on side surfaces of wedge slot, arranged in cutting plate as open to its lower support surface and meeting in direction to its front surface, and side support walls of seat are installed on wedge protrusion, which is arranged on lower support wall of seat. In cross section, which is parallel to lower support wall of seat, side support surfaces of cutting plate may be arranged as V-shaped and convex, and side support walls of seat - as V-shaped and concave.

EFFECT: increased strength of cutting plate.

4 cl, 3 dwg

Description

The invention relates to the field of material processing by cutting, in particular to turning and a precast cutting tool.

Known groove cutter containing a holder, in the nest of which, bounded by the lower supporting wall and the side supporting walls, is fixed by the interaction of the wedge protrusion with the reciprocal wedge groove of the cutting plate having a front surface, lower and lateral supporting surfaces for interaction with the lower supporting wall of the socket and the side support walls of the nest (see RU 2002594, B23B 27/00, 1993), / 1 /.

Known cutting plate having a front surface on which the cutting edges are located, the lower and side supporting surfaces for interaction with the lower supporting wall of the socket and the side supporting walls of the socket, respectively, and intended to be fixed in the holder by jamming (see / 1 /).

In a known groove cutter, the cutting insert is located mainly along the front surface. The objective of the invention is to increase the strength of the cutting insert and, accordingly, the cutter due to the location of the cutting insert along the rear surface.

The task with respect to the groove cutter is achieved by the fact that the groove cutter containing the holder, in the nest of which is limited by the lower supporting wall and the side supporting walls, is fixed by the interaction of the wedge protrusion with the reciprocal wedge groove of the cutting plate having a front surface, lower and side supporting surfaces for interaction, respectively, with the lower supporting wall of the socket and the side supporting walls of the socket, in accordance with the invention, the side supporting surfaces of the cutting insert They are located on the lateral surfaces of the wedge groove made in the cutting insert open to its lower abutment surface and converging towards its front surface, and the lateral abutment walls of the nest are located on the wedge protrusion made on the lower abutment wall of the nest.

The task with respect to the groove cutter is also achieved by the fact that to ensure the base of the cutting insert in the transverse direction in a section parallel to the lower supporting wall of the socket, the side supporting surfaces of the cutting plate are V-shaped convex, and the side supporting walls of the socket are V-shaped concave.

The problem in relation to the cutting insert is solved in that the cutting insert having a front surface on which the cutting edges are located, lower and side supporting surfaces for interacting with the lower supporting wall of the socket and the side supporting walls of the socket, respectively, and intended to be fixed in the holder by jamming , in accordance with the invention, the lateral supporting surfaces are located on the lateral surfaces of the wedge groove made open to the lower supporting surface and with walking towards the front surface.

The problem with the cutting insert is also solved by the fact that in the section parallel to the lower supporting surface, the side supporting surfaces of the cutting insert are made V-shaped convex.

The proposed groove cutter and cutting insert are presented in figures 1-3, in which:

figure 1 presents a side view of the working part of the holder of the groove cutter;

figure 2 presents a top view of figure 1;

figure 3 presents a section aa in figure 1.

The groove cutter contains a holder 1, in the socket of which is bounded by the lower supporting wall 2 and the side supporting walls 3, 4, a cutting plate 5 is fixed by the interaction of the wedge protrusion with the reciprocal wedge groove, having a front surface 6, a lower 7 and side supporting surfaces 8, 9 for interaction, respectively, with the lower support wall of the socket 2 and the side support walls 3, 4 of the socket. The lateral bearing surfaces 8, 9 of the cutting insert 5 are located on the lateral surfaces of the wedge groove made in the cutting insert open to its lower supporting surface 7 and converging towards its front surface 6, and the lateral supporting walls of the socket 8, 9 are located on the wedge protrusion 10 made on the lower supporting wall 7 of the socket.

The cutting insert is made double-sided with cutting edges 11 and 12. The working part of the cutting insert with the cutting edge 11 is located mainly along its rear surface 13, which improves the strength of both the cutting insert itself and the groove cutter on which it is mounted.

The working part of the cutting insert can be made in a plan view (see FIG. 2) in a form corresponding to a threaded or straight cutter, which allows it to be used for the corresponding processing operations.

When assembling the groove cutter, the cutting insert 5 is mounted with its wedge groove on the wedge protrusion 10 of the holder 1 and is pressed with a key 14 to the lower supporting wall 2. For this, one protrusion of the key 14 is inserted into the hole 15 on the holder, and the second is pressed onto the front surface 6 of the cutting insert . When releasing the cutting insert, the second protrusion is placed in the space 16 between the cutting insert 5 and the protrusion 10.

Claims (4)

1. A groove cutter comprising a holder, in the socket of which is bounded by a lower support wall and side support walls, is fixed by interaction of a wedge protrusion with a reciprocal wedge groove of a cutting plate having a front surface, lower and side support surfaces for interacting with the lower support wall of the socket, respectively and side support walls of the socket, characterized in that the side support surfaces of the cutting insert are located on the side surfaces of the wedge groove made in the cutting the plate is open on its lower supporting surface and converging towards its front surface, and the side supporting walls of the socket are located on the wedge protrusion made on the lower supporting wall of the socket. 2. The groove cutter according to claim 1, characterized in that in a section parallel to the lower supporting wall of the socket ;, the side supporting surfaces of the cutting insert are V-shaped convex, and the side supporting walls of the socket are V-shaped concave. 3. A cutting insert having a front surface on which the cutting edges are located, lower and lateral supporting surfaces for interacting with the lower supporting wall of the socket and the side supporting walls of the socket, respectively, and intended to be secured to the holder by jamming, characterized in that the lateral supporting surfaces located on the side surfaces of the wedge groove made open to the lower supporting surface and converging towards the front surface. 4. The cutting insert according to claim 3, characterized in that in the section parallel to the lower supporting surface, the side supporting surfaces of the cutting insert are made V-shaped convex.

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