An indexable profiling turning insert for machining track rollers

Abstract

The present invention discloses an indexable profiling turning blade for machining supporting rollers, comprising a blade body; the outline projection of the blade body is a long rectangular shape; in the blade body, at both ends of the length, there are protruding portions protruding outward along the width direction, the outline projection is a circular arc shape; the blade body has an upper surface, a bottom surface and a side surface; in the blade body, at the position corresponding to the two short sides of the long rectangular shape, the upper surface and the side surface intersect to form a straight main cutting edge, and at the position corresponding to the protruding portion, the upper surface and the side surface intersect to form an arc cutting edge, and the arc cutting edge and the main cutting edge are tangent to each other. The present invention not only has the characteristics of low cost and high economy, but also can reduce machining resistance, improve the performance of the blade, and can also ensure a perfect transition at the intersection of the arc and the straight line of the inner wall of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of cutting tools, in particular to an indexable profiling turning blade for machining a track roller. Background Art

[0002] Cutting tools are tools used for cutting in mechanical manufacturing, also known as cutting tools. There are many types of cutting tools, including tools for processing various external surfaces, tools for hole processing, tools for thread processing, tools for gear processing, tools for cutting, and so on. The inner wall processing of the supporting roller of engineering machinery has always been a difficult processing problem in the industry. Due to the complex shape of the inner wall of the supporting roller, there are both profiling and end face turning during processing. When using standard cutting tools, there is not enough avoidance space, which is easy to interfere. In addition, the roughness requirement of the inner wall of the workpiece is generally Ra4.5-Ra8.8. It is necessary to increase the feed during processing to obtain a sufficiently rough surface, which is also a test for the overall strength of the blade. In the prior art, non-standard customized cutting tools are used for the processing of supporting roller workpieces. The common tool form is a single-edged profiling turning tool. A 90-degree corner will be formed between the blade and the positioning surface to ensure sufficient avoidance space to meet the complex inner wall profiling and end face turning. However, the production of such blades in the prior art is difficult and costly, resulting in the blade pricing being high for a long time, and each blade can only be used once and cannot be used in a different position. For manufacturers of track rollers, the procurement cost of such tools is high and the tool economy is poor, which cannot achieve the purpose of reducing production costs. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an indexable profiling turning blade for machining supporting wheels. While satisfying both profiling turning and end face turning, the present invention has the characteristics of low cost and high economy on the one hand, and can reduce machining resistance and improve blade performance on the other hand, while also ensuring a perfect transition between the arc and the straight line on the inner wall of the workpiece being machined.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an indexable profiling turning blade for machining a supporting wheel, comprising a blade body; the outline projection of the blade body is a long rectangular shape; in the blade body, at both ends of the length, there are protruding portions with the outline projection of a circular arc shape protruding outward along the width direction; the blade body has an upper surface, a bottom surface and a side surface; in the blade body, at the position corresponding to the two short sides of the long rectangular shape, a straight main cutting edge is formed by the intersection of the upper surface and the side surface, and a main cutting edge rake face is extended from the main cutting edge along the upper surface to the inner side, and a main cutting edge rake face is formed by the main cutting edge The cutting edge extends along the side surface toward the lower side to form a main cutting edge back face; in the blade body, at a position corresponding to the protruding portion, an arc cutting edge is formed by the intersection of the upper surface and the side surface, an arc cutting edge rake face is extended from the arc cutting edge toward the inner side along the upper surface, and an arc cutting edge back face is extended from the arc cutting edge toward the lower side along the side surface to form an arc cutting edge; the cutting front angles of the main cutting edge rake face and the arc cutting edge rake face, and the cutting back angles of the main cutting edge back face and the arc cutting edge back face are respectively set to change correspondingly with the change of the outer shape of the contour of the workpiece being processed; the arc cutting edge has a tangent transition with the main cutting edge.

[0005] In the blade body, a chip breaker groove anti-chip surface of a main cutting edge is extended inwardly along the upper surface from the front face of the main cutting edge, and has a chip angle that changes accordingly with the outer shape of the contour of the workpiece being processed; a chip breaker groove anti-chip surface of an arc cutting edge is extended inwardly along the upper surface from the front face of the arc cutting edge, and has a chip angle that changes accordingly with the outer shape of the contour of the workpiece being processed.

[0006] A straight cutting edge band is also provided between the main cutting edge and the main cutting edge rake face; and an arc cutting edge band is also provided between the arc cutting edge and the arc cutting edge rake face.

[0007] The straight cutting edge band and the arc cutting edge band have the same edge width, and the width variation range is 0 to 1 mm.

[0008] The cutting front angle of the main cutting edge varies in the range of 0° to 60°. When the cutting front angle is greater than 60°, the wedge angle of the blade is less than 30°, and the strength of the blade tip is not sufficient to ensure that the blade can perform cutting processing; the cutting back angle varies in the range of 0° to 45°. When the cutting back angle is greater than 45°, the supporting strength of the blade back face will be reduced, and the blade will be prone to chipping; the anti-chip angle varies in the range of 0° to 60°. When the anti-chip angle is greater than 60°, the anti-chip surface will be close to vertical, the anti-chip effect will be reduced, and normal chip removal will be affected.

[0009] The cutting front angle of the arc cutting edge varies in the range of 0° to 60°. When the cutting front angle is greater than 60°, the wedge angle of the blade is less than 30°, and the strength of the blade tip is not sufficient to ensure that the blade can perform cutting processing; the cutting back angle varies in the range of 0° to 45°. When the cutting back angle is greater than 45°, the supporting strength of the blade back face will be reduced, and the blade will be prone to chipping; the anti-chip angle varies in the range of 0° to 60°. When the anti-chip angle is greater than 60°, the anti-chip surface will be close to vertical, the anti-chip effect will be reduced, and normal chip removal will be affected.

[0010] The angle range of the arc of the arc cutting edge is 0 to 180 degrees.

[0011] Two supporting surfaces parallel to each other are provided on the side surface of the blade body at positions corresponding to the two long sides of the long rectangular shape.

[0012] In the blade body, a V-shaped positioning groove with a V-shaped cross section is respectively provided on the upper surface and the lower surface.

[0013] The V-shaped angle of the V-shaped positioning groove is greater than 90 degrees and less than 180 degrees.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present invention adopts a blade body in which, at both ends of the length, there are protruding portions protruding outward along the width direction, and the contour projection is a circular arc shape; in the blade body, at the position corresponding to the two short sides of the long rectangular shape, a straight main cutting edge is formed by the intersection of the upper surface and the side surface, and the main cutting edge rake face is extended from the main cutting edge along the upper surface to the inner side direction, and the main cutting edge flank face is extended from the main cutting edge along the side surface to the lower side direction; in the blade body, at the position corresponding to the protruding portion, an arc cutting edge is formed by the intersection of the upper surface and the side surface, and the arc cutting edge rake face is extended from the arc cutting edge along the upper surface to the inner side direction, and the arc cutting edge flank face is extended from the arc cutting edge along the side surface to the lower side direction; the cutting front angles of the main cutting edge rake face and the arc cutting edge rake face, and the cutting back angles of the main cutting edge flank face and the arc cutting edge flank face are respectively set to change correspondingly with the change of the outer shape of the contour of the workpiece to be processed; the arc cutting edge has a tangent transition with the main cutting edge. The structure of the present invention is to set four arc cutting edges and two straight cutting edges on a blade, which can meet the needs of profile turning and end face turning at the same time, and the arc cutting edge and the straight cutting edge have a smooth transition without an intersection point, which can ensure a perfect transition between the arc and the straight line of the inner wall of the workpiece; the present invention can perform four rotations using four arc cutting edges, which greatly improves the economy of the blade; the present invention also sets a chip breaker groove on each arc cutting edge and the straight cutting edge, which can reduce processing resistance, reasonably break chips, and improve the performance of the blade.

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the indexable profiling turning insert for machining a track roller of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention;

[0018] Figure 2 is a top view of an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in FIG.

[0020] Figure 4 yes Figure 2 An enlarged schematic diagram of part B in FIG.

[0021] Figure 5 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (flipped at an angle);

[0022] Figure 6 is a side view of an embodiment of the present invention. DETAILED DESCRIPTION

[0023] Example

[0024] See also Figures 1 to 6 As shown, an indexable profiling turning blade for machining a supporting wheel of the present invention comprises a blade body 1; the outline projection of the blade body 1 is a long rectangular shape; in the blade body 1, at both ends 2 of the length, there are protruding portions 3 protruding outwardly along the width direction, the outline projection is a circular arc shape; the blade body 1 has an upper surface, a bottom surface and a side surface; in the blade body 1, at the position corresponding to the two short sides of the long rectangular shape, a straight main cutting edge 4 is formed by the intersection of the upper surface and the side surface, a main cutting edge rake face 5 is extended from the main cutting edge 4 to the inner side along the upper surface, and a main cutting edge is extended from the main cutting edge 4 to the lower side along the side surface. A cutting edge rear face 6; in the blade body 1, at a position corresponding to the protruding portion 3, an arc cutting edge 7 is formed by the intersection of the upper surface and the side surface, an arc cutting edge rake face 8 is extended from the arc cutting edge 7 along the upper surface toward the inner side, and an arc cutting edge rear face 9 is extended from the arc cutting edge 7 along the side surface toward the lower side; the cutting front angle α1 of the main cutting edge rake face 5 and the cutting front angle α2 of the arc cutting edge rake face 8, as well as the cutting back angle β1 of the main cutting edge rear face 6 and the cutting back angle β2 of the arc cutting edge rear face 9 are respectively set to change accordingly with the change of the outer shape of the contour of the workpiece being processed; the arc cutting edge 7 has a tangent transition with the main cutting edge 4.

[0025] In this embodiment, in the blade body 1, a chip breaker groove surface 10 of a main cutting edge is extended inwardly along the upper surface from the front cutting face 5 of the main cutting edge, and has a chip angle γ1 that changes accordingly with the outer shape of the contour of the workpiece being processed; and a chip breaker groove surface 11 of an arc cutting edge is extended inwardly along the upper surface from the front cutting face 8 of the arc cutting edge, and has a chip angle γ2 that changes accordingly with the outer shape of the contour of the workpiece being processed.

[0026] In this embodiment, a straight cutting edge band 12 is further provided between the main cutting edge 4 and the main cutting edge rake face 5 ; and an arc cutting edge band 13 is further provided between the arc cutting edge 7 and the arc cutting edge rake face 8 .

[0027] In this embodiment, the straight cutting edge band 12 and the arc cutting edge band 13 have the same edge width, and the width variation range is 0 to 1 mm.

[0028] In this embodiment, the cutting front angle α1 of the main cutting edge varies in the range of 0° to 60°. When the cutting front angle is greater than 60°, the wedge angle of the blade is less than 30°, and the strength of the blade tip is not sufficient to ensure that the blade can perform cutting processing; the cutting back angle β1 varies in the range of 0° to 45°. When the cutting back angle is greater than 45°, the supporting strength of the blade back face will be reduced, and the blade will be prone to chipping; the anti-chip angle γ1 varies in the range of 0° to 60°. When the anti-chip angle is greater than 60°, the anti-chip surface will be close to vertical, the anti-chip effect will be reduced, and normal chip removal will be affected.

[0029] In this embodiment, the cutting front angle α2 of the circular cutting edge varies in the range of 0° to 60°. When the cutting front angle is greater than 60°, the wedge angle of the blade is less than 30°, and the tip strength is insufficient to ensure that the blade can perform cutting processing; the cutting back angle β2 varies in the range of 0° to 45°. When the cutting back angle is greater than 45°, the supporting strength of the blade back face will be reduced, and the blade will be prone to chipping; the anti-chip angle γ2 varies in the range of 0° to 60°. When the anti-chip angle is greater than 60°, the anti-chip surface will be close to vertical, the anti-chip effect will be reduced, and normal chip removal will be affected.

[0030] In this embodiment, the angle range of the arc of the arc cutting edge 7 is 0 to 180 degrees.

[0031] In this embodiment, two supporting surfaces 14 and 15 parallel to each other are provided on the side surface of the blade body 1 at positions corresponding to the two long sides of the rectangular shape.

[0032] In this embodiment, a V-shaped positioning groove 16, 17 with a V-shaped cross section is respectively provided on the upper surface and the lower surface of the blade body 1.

[0033] In this embodiment, the V-shaped angles of the V-shaped positioning grooves 16 and 17 are greater than 90 degrees and less than 180 degrees; wherein, on the top of the blade body 1, in the middle section of the length of the blade body 1, a boss 18 is also provided, and the V-shaped positioning groove 16 on the upper surface of the blade body 1 is provided on the boss 18, and the V-shaped positioning groove 17 on the lower surface of the blade body 1 runs through the length direction of the blade body 1.

[0034] In this embodiment, in the insert body 1, positioning surfaces 19 and 20 are respectively provided below the main cutting edge flank surface 6 at both ends 2 of the length.

[0035] The present invention is a kind of indexable profiling turning blade for machining supporting rollers, which adopts a blade body 1, at both ends 2 of the length, respectively, a convex part 3 with a contour projection of a circular arc shape protrudes outward along the width direction; in the blade body 1, at the position corresponding to the two short sides of the long rectangular shape, a straight main cutting edge 4 is formed by the intersection of the upper surface and the side surface, and a main cutting edge rake face 5 is extended from the main cutting edge 4 to the inner side along the upper surface, and a main cutting edge flank face 6 is extended from the main cutting edge to the lower side along the side surface; in the blade body 1, at the position corresponding to the convex part The position of the extension portion 3 is formed by the intersection of the upper surface and the side surface to form an arc cutting edge 7, the arc cutting edge rake face 8 is extended from the arc cutting edge along the upper surface toward the inner side, and the arc cutting edge flank face 9 is extended from the arc cutting edge along the side surface toward the lower side; the cutting front angles α1 and α2 of the main cutting edge rake face and the arc cutting edge rake face, and the cutting back angles β1 and β2 of the main cutting edge flank face and the arc cutting edge flank face are respectively set to change accordingly with the change of the outer shape of the contour of the workpiece being processed; the arc cutting edge 7 has a tangent transition with the main cutting edge 4. The structure of the present invention is to set four arc cutting edges and two straight cutting edges on a blade, which can meet the needs of profile turning and end face turning at the same time, and the arc cutting edge and the straight cutting edge have a smooth transition without an intersection point, which can ensure a perfect transition between the arc and the straight line of the inner wall of the workpiece; the present invention can perform four rotations using four arc cutting edges, which greatly improves the economy of the blade; the present invention also sets a chip breaker groove on each arc cutting edge and the straight cutting edge, which can reduce processing resistance, reasonably break chips, and improve the performance of the blade.

[0036] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. An indexable profiling turning insert for machining a roller, comprising an insert body; the outline projection of the insert body is a long rectangular shape; the insert body is characterized in that: At both ends of the length, there are protruding portions with an arc-shaped outline projected outward along the width direction; the blade body has an upper surface, a bottom surface and a side surface; in the blade body, at the position corresponding to the two short sides of the long rectangular shape, a straight main cutting edge is formed by the intersection of the upper surface and the side surface, and a main cutting edge rake face is extended from the main cutting edge along the upper surface to the inner side, and a main cutting edge flank face is extended from the main cutting edge along the side surface to the lower side; in the blade body, at the position corresponding to the protruding portion The position of the part is formed by the intersection of the upper surface and the side surface to form an arc cutting edge, the arc cutting edge rake face is extended from the upper surface to the inner side to set the arc cutting edge rake face, and the arc cutting edge flank face is extended from the arc cutting edge to the lower side to set the arc cutting edge flank face; the cutting front angles of the main cutting edge rake face and the arc cutting edge rake face, and the cutting back angles of the main cutting edge flank face and the arc cutting edge flank face are respectively set to change correspondingly with the change of the outer shape of the contour of the processed workpiece; the arc cutting edge and the main cutting edge are in tangent transition; In the blade body, a main cutting edge chip breaker groove anti-chip surface having a chip breaker angle that changes correspondingly with the shape of the workpiece being processed is extended from the main cutting edge rake surface along the upper surface to the inner side; a circular arc cutting edge chip breaker groove anti-chip surface having a chip breaker angle that changes correspondingly with the shape of the workpiece being processed is extended from the circular arc cutting edge rake surface along the upper surface to the inner side; A straight cutting edge band is also provided between the main cutting edge and the main cutting edge rake face; and an arc cutting edge band is also provided between the arc cutting edge and the arc cutting edge rake face.

2. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: The straight cutting edge band and the arc cutting edge band have the same edge width, and the width variation range is 0 to 1 mm.

3. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: The range of the cutting front angle of the main cutting edge is 0° to 60°, the range of the cutting back angle is 0° to 45°, and the range of the anti-chip angle is 0° to 60°.

4. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: The range of the cutting front angle of the arc cutting edge is 0° to 60°, the range of the cutting back angle is 0° to 45°, and the range of the anti-chip angle is 0° to 60°.

5. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: The angle range of the arc of the arc cutting edge is 0 to 180 degrees.

6. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: Two supporting surfaces parallel to each other are provided on the side surface of the blade body at positions corresponding to the two long sides of the long rectangular shape.

7. The indexable profiling turning insert for machining a track roller according to claim 1, characterized in that: In the blade body, a V-shaped positioning groove with a V-shaped cross section is respectively provided on the upper surface and the lower surface.

8. The indexable profiling turning insert for machining a track roller according to claim 7, characterized in that: The V-shaped angle of the V-shaped positioning groove is greater than 90 degrees and less than 180 degrees.

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