RU2325248C1 - Set of cutting instruments - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: instrument consists of casing and at least, one cutting blade with cutting and adjustment parts, elastically fitted into the socket of the casing between the elastic and base jaws and with adjustable surfaces in contact with the holding surface of the elastic jaw and support surface of the base jaw, support surface for the cutting part for contact with the elastic jaw and the oppositely lying cutting part and support surface for contact with the base jaw. To increase reliability and durability due to the lowering of thermo-mechanical load at the edge of the support surface of the base jaw, the adjustment surface of the cutting blade for contact with the elastic jaw is put on a projection, made on its adjustment part, and the adjustment surface of the cutting blade for contact with the base jaw is transverse to its adjustment surface for contact with the elastic jaw. The support surface of the cutting blade for contact with the base jaw is on the base, transverse to its support surface for contact with the elastic jaw.

EFFECT: increased reliability.

6 dwg

Description

The invention relates to the field of material processing by cutting, tools for cutting and processing grooves and grooves.

Known prefabricated cutting tool containing a housing and at least one cutting insert with a cutting and mounting parts, elastically fixed in the housing socket between the elastic and base jaws and having mounting surfaces for interaction with the clamping surface of the elastic jaw and the supporting surface of the base jaw, the thrust surface on a cutting part for interacting with an elastic sponge; and an opposing cutting part a thrust surface for interacting with a base sponge (see WO 2005/087415, B23B 27/04, 2005).

In the known prefabricated cutting tool, the edge of the supporting surface of the base jaw adjacent to the rear surface of the housing is subjected to significant thermomechanical loads during cutting. The objective of the invention is to reduce these loads on the surface of the socket and to increase due to this the reliability and durability of the combined cutting tool.

To solve the problem in a prefabricated cutting tool containing a housing and at least one cutting insert with a cutting and mounting parts, elastically fixed in the housing socket between the elastic and base jaws and having mounting surfaces for interaction with the clamping surface of the elastic jaw and the supporting surface of the base jaw a thrust surface on the cutting part for interacting with an elastic sponge and an opposing cutting part a thrust surface for interacting with the base sponge, in accordance with the invention During installation, the mounting surface of the cutting insert for interacting with the elastic sponge is located on the protrusion made on its mounting part, and the mounting surface of the cutting insert for interacting with the base sponge is located mainly transversely (i.e., at a right or close angle to it) to its mounting surface for interaction with the elastic sponge, while the thrust surface of the cutting insert for interaction with the base sponge is located mainly transversely to its thrust surface for interaction with the elastic ubkoy. The transverse arrangement of mounting and thrust surfaces allows you to position the cutting insert along the rear face of the body, which in turn allows you to reduce thermomechanical loads on the surface of its base jaw, interacting with the thrust surface of the cutting insert, the opposite of the cutting part.

The proposed precast cutting tool is presented in figures 1-4, in which:

figure 1 partially shows a side view of the working part of the housing of the cutting tool in the form of a cutting or grooving cutter;

figure 2 shows a top view of figure 1;

figure 3 shows a section aa in figure 1;

figure 4 shows a section bB in figure 1;

figure 5 partially shows a side view of the working part of the housing with a second embodiment of the thrust and mounting surfaces of the cutting insert for interaction with an elastic sponge;

figure 6 shows a top view of figure 5.

The prefabricated cutting tool comprises a housing 1 and at least one cutting insert 2 with a cutting 3 and a setting 4 parts. The cutting insert 2 is resiliently fixed in the socket of the housing 1 between the elastic 5 and base 6 jaws. The elastic sponge 5 is separated from the base sponge 6 by a slot 7, creating a jumper 8, giving the sponge 5 elastic properties.

The cutting insert 2 has mounting surfaces 9 and 10 for interaction with the clamping surface 11 of the elastic jaw 5 and the supporting surface 12 of the base jaw 6, respectively.

The cutting insert 2 also has a thrust surface 13 on the cutting part for interacting with the elastic sponge and an opposing cutting surface 3 on the abutting surface 14 for engaging with the base sponge 6.

The mounting surface 7 of the cutting insert for interacting with the elastic sponge is located on the protrusion 15 made on its mounting part 4. In this case, the mounting surface 10 of the cutting insert 2 for interacting with the base sponge is generally transverse to its mounting surface 9 for interacting with the elastic sponge 5 and the abutment surface 14 of the insert for engaging with the base jaw 6 is generally transverse to its abutment surface 13 for engaging with the elastic sponge 5.

In the cross section, the mounting surfaces 9 and 10 of the cutting insert 2 and the surfaces of the elastic and base jaws interacting with them according to the first embodiment are made V-shaped to fix the position of the cutting insert in the transverse direction to the body 2 (see FIGS. 3 and 4).

In the case when increased reliability of fixing the cutting insert from pulling it out of the socket is necessary, for example, when retracting from the groove or under the influence of significant centrifugal forces, a second embodiment of the thrust 13 and mounting 9 surfaces of the cutting insert 2 interacting with the elastic sponge 5 is possible (see 5 and 6), in which corrugations are performed on the mounting surface 9, and the thrust surface 13 is V-shaped.

To place the cutting insert 2 in the housing housing 1, the elastic sponge 5 is pressed with a special key and the cutting insert 2 is set until its mounting and thrust surfaces come in contact with the corresponding surfaces on the base and elastic jaws. Then release the elastic sponge.

The transverse location of the mounting and thrust surfaces of the cutting insert in combination with the location on the protrusion 12 of its mounting surface 9 for interaction with an elastic sponge allows you to place it in a slot open to the rear edge 16 of the housing 1 and located along it. In this case, the thrust surface 14 of the cutting insert interacting with the corresponding surface of the base jaw 6, which receives the main load during the cutting process, is as far away as possible from the cutting part.

Claims (1)

A prefabricated cutting tool comprising a housing and at least one cutting insert with a cutting and mounting parts, elastically fixed in the housing socket between the elastic and base jaws and having mounting surfaces for interacting with the clamping surface of the elastic jaw and the supporting surface of the base jaw, a thrust surface on the cutting parts for interacting with an elastic sponge and an opposing cutting part a thrust surface for interacting with a base sponge, characterized in that the mounting surface of the cutting plate a table for interacting with an elastic sponge is located on a protrusion made on its mounting part, and the mounting surface of the cutting insert for interacting with the base sponge is located mainly transversely to its mounting surface for interacting with the elastic sponge, while the abutting surface of the cutting insert for interacting with the base the sponge is located mainly transversely to its abutment surface for interaction with an elastic sponge.

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