Three-dimensional groove type turning tool blade made of CBN (Cubic Boron Nitride) material

Abstract

The utility model belongs to the technical field of groove type turning blades, and particularly relates to a three-dimensional groove type turning blade made of CBN (cubic boron nitride) materials, which comprises a blade body, four cutting heads are arranged on the outer surface of the blade body, superhard CBN is arranged on the outer surfaces of the cutting heads, a groove type is arranged on the front blade surface of the superhard CBN, and a chip breaker groove is arranged inside the groove type. The center of a circular arc in each circular arc cutting edge 4 and the center of the blade body 1 are located on the same center line, so that the radius of each circular arc cutting edge 4 is r which is larger than or equal to 0.2 mm and smaller than or equal to 1.6 mm, the corresponding circular arc angle of each circular arc cutting edge 4 is approximately 80 degrees, and 3D groove profiles 3 are designed on the edge parts from the upper surface and the lower surface to the side edge of each circular arc cutting edge 4. The indexable blade is simple in structure, good in economical efficiency, convenient to install and position, good in clamping strength, small in vibration, high in machining surface quality and long in service life, and the indexable blade is applied to the indexable blade.

Description

Technical Field

[0001] The utility model relates to the technical field of grooved turning blades, in particular to a three-dimensional grooved turning blade made of CBN material. Background Art

[0002] Turning blades are important tools for cutting in mechanical manufacturing. The application of indexable inserts makes the tool more convenient and faster in use, reduces tool change time and improves production efficiency. This kind of turning blade realizes the positioning in the up and down direction through the upper and lower positioning surfaces of the blade. The side surface of the blade adopts a V-shaped fitting or a serrated fitting composed of a plurality of V-shaped shapes, and the elastic deformation of the turning tool body is caused by pressing the screw with a pressing plate to connect and fix the blade and the tool shank. Turning blades are widely used in various fields. For example, the automotive field requires turning blades to have characteristics such as high precision, high cutting efficiency and long life. The machine tool manufacturing field has relatively strict requirements for turning blades, and requires high cutting precision and long service life. Superhard CBN tools have the characteristics of high precision and long life.

[0003] The prior art has the following defects or problems: The prior art with the publication number of CN205309331U discloses a D-shaped blade with a chip breaker groove, including a 55° diamond blade body. A chip breaker groove is arranged at the cutting edge of the blade body. The chip breaker groove is V-shaped on the blade body. The included angle of the V-shaped chip breaker groove is larger than the apex angle at the main cutting edge of the blade body, and the included angle of the V-shaped chip breaker groove is 70-90 degrees.

[0004] Under certain conditions during the use of the above equipment, it can exert excellent chip breaking performance, improve tool life and production efficiency; improve the processing environment, protect the surface quality of the workpiece, and improve the surface finish of the workpiece; it also plays a positive role in the safe production of operators.

[0005] The structure in the above content is relatively complex, with poor economy, inconvenient installation and positioning, and does not have a certain clamping effect, affecting the surface quality and service life of processing. Therefore, a three-dimensional grooved turning blade made of CBN material is proposed to address the above deficiencies.

[0006] It should be noted that the above content belongs to the technical cognition scope of the inventor and does not necessarily constitute the prior art. Summary of the Utility Model

[0007] In view of the deficiencies of the prior art, the utility model provides a three-dimensional grooved turning blade made of CBN material, which solves the existing problems.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A three-D grooved turning tool blade using CBN material, including a blade body, four cutting heads are arranged on the outer surface of the blade body, superhard CBN is arranged on the outer surface of the cutting heads, a groove type is arranged on the rake face of the superhard CBN, a chip breaker groove is arranged inside the groove type, the front end fillet of the superhard CBN of the cutting head is the same as the fillet of the blade body, which is 0.2 to 1.6 mm, the front end fillet of the blade body and both side edges are tangent, the upper and lower surfaces of the blade body are perpendicular to the side edges, and an arc-shaped cutting edge is arranged on the outer surface of the chip breaker groove.

[0009] As a preferred technical solution of the present utility model, the center of the arc-shaped cutting edge and the center of the blade are on the same straight line.

[0010] As a preferred technical solution of the present utility model, the superhard CBN of the cutting head is fixedly connected to the blade body.

[0011] As a preferred technical solution of the present utility model, the arc angle of the arc-shaped cutting edge is approximately 80°, and the fillet size of the arc-shaped cutting edge is 0.2 mm ≤ R ≤ 1.6 mm.

[0012] As a preferred technical solution of the present utility model, the upper surface of the cutting head, the lower surface of the groove type and the side edges are perpendicular to each other, and two cutting edges are fixedly connected to both the front and back surfaces of the cutting head.

[0013] As a preferred technical solution of the present utility model, an installation seat is arranged at the bottom end of the blade body, a bottom surface is arranged on the outer surface of the installation seat, a side surface is arranged on the outer surface of the installation seat, and the blade body is rotatably connected to the installation seat.

[0014] As a preferred technical solution of the present utility model, a groove type cutting edge width is opened inside the arc-shaped cutting edge, two cutting edge front angles are arranged on the outer surface of the arc-shaped cutting edge, a chip removal groove is opened inside the arc-shaped cutting edge, and a chip breaking and removal groove is opened inside the chip removal groove.

[0015] Compared with the prior art, the present utility model provides a three-D grooved turning tool blade using CBN material, which has the following beneficial effects:

[0016] The three-dimensional grooved turning tool blade using CBN material, which is provided with a blade body, a cutting head, an arc-shaped cutting edge and other structures, can be applied to the machining of outer circles, inner circles and profiling machining. The center of the arc in the arc-shaped cutting edge 4 and the center of the blade body 1 are on the same center line, so that the radius of each arc-shaped cutting edge 4 is r, 0.2 mm ≤ r ≤ 1.6 mm. Secondly, the arc angle corresponding to the arc-shaped cutting edge 4 is approximately 80°. A 3D groove 3 is designed on the edge part from its upper and lower surfaces to the side, so as to meet the requirements of improving machining efficiency and cutting accuracy during machining, achieving the advantages of simple structure, good economy, convenient installation and positioning, good clamping strength, small vibration, high machining surface quality and long service life, and being applicable to indexable inserts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic side view structure diagram of the present invention;

[0019] Figure 3 is a schematic diagram of the internal distribution structure of the present invention.

[0020] In the figure: 1. Blade body; 2. Cutting head; 3. Groove; 4. Arc-shaped cutting edge; 4-1. Groove edge width; 4-2. Cutting edge rake angle; 4-3. Chip groove; 4-4. Chip breaking groove; 5. Side; 6. Chip breaking groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: As Figures 1 - 3As shown in the figure, the present utility model provides a technical solution: a three-dimensional grooved turning tool blade made of CBN material, including a blade body 1. Four cutting heads 2 are arranged on the outer surface of the blade body 1. Superhard CBN is arranged on the outer surface of the cutting heads 2. A groove type 3 is arranged on the rake face of the superhard CBN. A chip breaker groove 6 is arranged inside the groove type 3. The front end fillet of the superhard CBN of the cutting head 2 is the same as the fillet of the blade body 1, which is 0.2 to 1.6 mm. The front end fillet of the blade body 1 and its two side edges are tangent. The upper and lower surfaces of the blade body 1 are perpendicular to the side edges. An arc-shaped cutting edge 4 is arranged on the outer surface of the chip breaker groove 6.

[0024] In this embodiment, a blade body 1 is arranged through a indexable insert. The blade body 1 is slightly parallelogram-shaped in plan view. It has four upper and lower cutting heads 2. Each cutting head 2 is connected to the blade body 1 by welding. There is a three-dimensional groove type 3 on the upper surface of the superhard CBN. The upper surface and the side surface of the blade of the blade body 1 are perpendicular. The fillet of the superhard CBN is the same as the fillet of the blade body, achieving its simple structure.

[0025] Example 2: As Figures 1 - 3 shown, the center of the arc-shaped cutting edge 4 and the center of the blade are on a straight line. The superhard CBN of the cutting head 2 is fixedly connected to the blade body 1. The arc angle of the arc-shaped cutting edge 4 is approximately 80°. The fillet size of the arc-shaped cutting edge 4 is 0.2 mm ≤ R ≤ 1.6 mm. The upper surface of the cutting head 2, the lower surface of the groove type 3 and the side edge 5 are perpendicular to each other. Two cutting edges are fixedly connected to both the front and back sides of the cutting head 2. An installation seat is arranged at the bottom end of the blade body 1. A bottom surface is arranged on the outer surface of the installation seat. A side surface is arranged on the outer surface of the installation seat. The blade body 1 and the installation seat are rotatably connected. A groove type edge width 4-1 is arranged inside the arc-shaped cutting edge 4. Two cutting edge front angles 4-2 are arranged on the outer surface of the arc-shaped cutting edge 4. A chip evacuation groove 4-3 is arranged inside the arc-shaped cutting edge 4. A chip breaking groove 4-4 is arranged inside the chip evacuation groove 4-3.

[0026] In this embodiment, the centers of the arcs of each arc-shaped cutting edge 4 and the center of the blade body 1 are on a center line, so that the radius of each arc-shaped cutting edge 4 is r, 0.2 mm ≤ r ≤ 1.6 mm. Secondly, the arc angle corresponding to the arc-shaped cutting edge 4 is approximately 80°. A 3D groove type 3 is designed on the edge part from its upper and lower surfaces to the side edge, meeting the requirements of improving processing efficiency and cutting accuracy during processing. The thickness of the groove type edge width 4-1 is between 0.05 and 0.15. Two front angles 4-2 are designed to cope with different cutting conditions. The angles of the two front angles 4-2 with the upper surface are 10 to 15°. The depth of the chip evacuation groove 4-3 is between 0.05 and 0.1. The chip breaking groove 4-4 is the chip breaking part of the chip evacuation groove 4-3.

[0027] Working principle of this embodiment: A blade body 1 is provided on the indexable insert. The blade body 1 is slightly parallelogram-shaped in plan view and has four cutting heads 2 on the upper and lower sides. Each cutting head 2 is connected to the blade body 1 by welding. There is a 3D groove 3 on the upper surface of the superhard CBN. The upper surface and the side surface of the blade of the blade body 1 are perpendicular. The fillet of the superhard CBN is the same as the fillet of the blade body, achieving a simple structure. Among them, the centers of the arcs of the circular arc cutting edges 4 are on the same center line as the center of the blade body 1, so that the radius of the circular arc cutting edges 4 is r, where 0.2 mm ≤ r ≤ 1.6 mm. Secondly, the arc angle corresponding to the circular arc cutting edge 4 is approximately 80°. A 3D groove 3 is designed at the edge part from the upper and lower surfaces to the side, so as to meet the requirements of improving machining efficiency and cutting accuracy during machining. The thickness of the groove edge width 4-1 is between 0.05 and 0.15. Two rake angles 4-2 are designed to cope with different cutting conditions. The angles of the two rake angles 4-2 with the upper surface are 10 to 15°. The depth of the chip flute 4-3 is between 0.05 and 0.1. The chip breaker groove 4-4 is the chip breaking part of the chip flute 4-3.

[0028] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A three-dimensional grooved turning tool blade made of CBN material, characterized in that: It includes a blade body (1), on the outer surface of the blade body (1), there are four cutting heads (2) arranged, on the outer surface of the cutting heads (2), there is superhard CBN provided, on the rake face of the superhard CBN, there is a groove type (3) provided, inside the groove type (3), there is a chip breaker groove (6) provided, the front end fillet of the superhard CBN of the cutting head (2) is the same as the fillet of the blade body (1), which is 0.2 to 1.6 mm, the front end fillet of the blade body (1) and both side edges are tangent, the upper and lower surfaces of the blade body (1) are perpendicular to the side edges, and on the outer surface of the chip breaker groove (6), there is an arc-shaped cutting edge (4) provided.

2. The three-dimensional grooved turning tool blade using CBN material according to claim 1, wherein: The center of the arc-shaped cutting edge (4) and the blade center are on the same straight line.

3. The three-dimensional grooved turning tool blade using CBN material according to claim 1, characterized in that: The superhard CBN of the cutting head (2) is fixedly connected to the blade body (1).

4. A three-dimensional grooved turning tool blade using CBN material according to claim 1, characterized in that: The arc angle of the arc-shaped cutting edge (4) is approximately 80°, and the fillet size of the arc-shaped cutting edge (4) is 0.2 mm ≤ R ≤ 1.6 mm.

5. A three-dimensional grooved turning tool blade using CBN material according to claim 1, characterized in that: The upper surface of the cutting head (2) and the lower surface of the groove type (3) are perpendicular to the side edge (5), and two cutting edges are fixedly connected to both the front and back sides of the cutting head (2).

6. A three-dimensional grooved turning tool blade using CBN material according to claim 1, characterized in that: At the bottom end of the blade body (1), there is a mounting seat provided, on the outer surface of the mounting seat, there is a bottom surface provided, on the outer surface of the mounting seat, there is a side surface provided, and the blade body (1) is rotatably connected to the mounting seat.

7. The three-dimensional grooved turning tool blade using CBN material according to claim 1, characterized in that: Inside the arc-shaped cutting edge (4), there is a groove type cutting edge width (4-1) opened, on the outer surface of the arc-shaped cutting edge (4), there are two cutting edge front angles (4-2) provided, inside the arc-shaped cutting edge (4), there is a chip removal groove (4-3) opened, and inside the chip removal groove (4-3), there is a chip breaking and removal groove (4-4) opened.

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