V-shaped groove machining tool

Abstract

The utility model discloses a V-shaped groove machining tool which comprises a blade body and cutting units on the two sides, the main cutting edge rear angle faces of the cutting units are connected with the upper surface, the auxiliary cutting edge rear angle faces of the cutting units are connected with the lower surface, and the main cutting edge rear angle faces and the auxiliary cutting edge rear angle faces are connected through arc edge rear angle faces. The main cutting edge rear angle face and the positioning face intersect to form a main cutting edge, the auxiliary cutting edge rear angle face and the positioning face intersect to form an auxiliary cutting edge, and the arc edge rear angle face and the positioning face intersect to form an arc edge. By adopting the combination of the main cutting edge, the auxiliary cutting edge, the two linear edges and the at least one arc edge, the cutting depth and width can be better controlled, the cutting error is reduced, the precision is improved, the abrasion of the cutter is reduced, the service life of the cutter is prolonged, and particularly, the performance is more prominent when the cutter is used for treating materials with complex shapes, so that the service life of the cutter is prolonged. The method is suitable for machining the turbine shell with the irregular appearance.

Description

Technical Field

[0001] The utility model relates to the technical field of cemented carbide blades, and more specifically, to a V-groove machining tool. Background Technique

[0002] Turbocharging technology is an essential technology for the development of energy conservation and consumption reduction in automobiles. Vehicle engines are also gradually changing. The turbocharger housing is restricted by the space of the internal structure of the engine and has the characteristic of irregular shape, which brings great difficulties in machining the groove at the joint of the housing and is difficult to ensure its quality.

[0003] For example, CN105171012A discloses a cutting tool including an end face grooving blade, a tool holder and a fixing connecting piece. The tool holder is provided with a blade mounting seat. The fixing connecting piece passes through the mounting hole of the blade body, and the fixing connecting piece mounts and fixes the end face grooving blade on the blade mounting seat. The two ends of the blade body of the grooving blade are respectively provided with outwardly protruding cutting heads, and the blade body is provided with a mounting hole for mounting and fixing. Although this grooving tool is convenient for disassembly and installation, when machining the end face groove of the turbine housing, due to its irregular shape, the blade needs to be clamped and calibrated multiple times, which still results in low machining efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a V-groove machining tool aiming at the deficiencies that the existing grooving blades need to be clamped and calibrated multiple times when machining the irregular end face of the turbine housing, resulting in low machining efficiency.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A V-groove machining tool includes a blade body and a cutting unit on the blade body; the blade body includes an upper surface, a lower surface and a side surface, and a central positioning hole is provided at its geometric center. The cutting unit includes a major cutting edge flank, a minor cutting edge flank, a circular arc edge flank, a positioning surface and a cutting surface. The major cutting edge flank is connected to the upper surface, the minor cutting edge flank is connected to the lower surface, and the major cutting edge flank and the minor cutting edge flank are connected by the circular arc edge flank. The cutting surface and the positioning surface are respectively connected to the side surface, the major cutting edge flank, the minor cutting edge flank and the circular arc edge flank;

[0007] The intersection of the major cutting edge flank and the positioning surface forms a major cutting edge, the intersection of the minor cutting edge flank and the positioning surface forms a minor cutting edge, and the intersection of the circular arc edge flank and the positioning surface forms a circular arc edge. The included angle between the major cutting edge flank and the perpendicular line of the upper surface is 5-15°, and the included angle γ2 between the major cutting edge and the minor cutting edge is 10-20°.

[0008] Furthermore, the angle γ1 between the secondary cutting edge and the perpendicular line of the lower surface is 3 to 10°.

[0009] Furthermore, the radius R of the arc cutting edge is 0.5 to 5 mm.

[0010] Furthermore, the maximum cutting depth H1 of the cutting unit is 5 to 10 mm.

[0011] Furthermore, a relief groove is provided at the connection between the blade body and the flank face of the main cutting edge.

[0012] Furthermore, a relief surface is provided at the connection between the flank face of the secondary cutting edge and the lower surface, and the angle α between the relief surface and the vertical plane is 40 to 50°.

[0013] Furthermore, one end of the cutting surface of the flank face of the main cutting edge, the flank face of the secondary cutting edge, and the flank face of the arc cutting edge to the positioning surface end is inclined. The angle β1 between the flank face of the main cutting edge and the perpendicular line of the cutting surface is 3 to 8°, the angle β2 between the flank face of the secondary cutting edge and the perpendicular line of the cutting surface is 3 to 8°, and the angle between the flank face of the arc cutting edge and the perpendicular line of the cutting surface is 3 to 8°.

[0014] Furthermore, multiple arc cutting edges are provided to connect the main cutting edge and the secondary cutting edge.

[0015] Furthermore, a relief chamfer is provided at the connection between the upper surface, the lower surface, and the side surface.

[0016] Furthermore, the blade body is a polygonal body, and multiple cutting units are provided thereon.

[0017] Compared with the prior art, the beneficial effects are as follows:

[0018] In the present utility model, multiple protruding cutting units are provided on the blade body. The cutting unit includes two straight cutting edges, namely the main cutting edge and the secondary cutting edge, and at least one arc cutting edge. The combination of the main cutting edge, the secondary cutting edge, and the arc cutting edge can better control the cutting depth and width, reduce the cutting error, thereby achieving a high-precision machining effect. Moreover, the reasonable configuration of the straight cutting edge and the arc cutting edge helps to reduce tool wear and extend the service life of the tool, especially being more prominent when processing materials with complex shapes. The multiple cutting units provided on the blade body of the present utility model can effectively disperse the cutting load, making the cutting process more stable, being particularly suitable for cutting end face grooves with irregular structures, and improving the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional view of the groove machining tool in Embodiment 3;

[0020] Figure 2 It is another three-dimensional view of the groove machining tool in Embodiment 3;

[0021] Figure 3 Front view of the groove machining tool in Embodiment 3

[0022] Figure 4 is Figure 3 Enlarged view of part N in

[0023] Figure 5 Schematic diagram of the groove machining tool with multiple arc cutting edges in Embodiment 4

[0024] Wherein, 1 is the blade body, 2 is the clearance chamfer, 3 is the main cutting edge, 3a is the back surface of the main cutting edge, 4 is the secondary cutting edge, 4a is the back surface of the secondary cutting edge, 5 is the arc cutting edge, 5a is the back surface of the arc cutting edge, 6a is the positioning surface, 6b is the cutting surface, 7 is the clearance surface, 8 is the clearance groove, 9 is the lower surface, 10 is the upper surface, and 20 is the center positioning hole Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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 making creative efforts belong to the scope of protection of the present invention

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. If there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features

[0027] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances

[0028] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Embodiment 1

[0030] This embodiment provides a V-groove machining tool, as Figures 1 - 4 shown, which includes a blade body 1 and a cutting unit on the side of the blade body 1. The blade body 1 is a quadrilateral body, including an upper surface 10, a lower surface 9, and a plurality of side surfaces connecting the upper surface 10 and the lower surface 9. Clearance chamfers 2 are provided at the joints of the upper surface 10, the lower surface 9, and the side surfaces, and a central positioning hole 20 is provided at its geometric center.

[0031] The cutting units are respectively located on both sides of the blade body 1, and include a main cutting edge flank 3a, a secondary cutting edge flank 4a, an arc edge flank 5a, and a positioning surface 6a. The main cutting edge flank 3a is connected to the upper surface 10, and the angle between the main cutting edge flank 3a and the perpendicular line of the upper surface 10 is 5-15°. The secondary cutting edge flank 4a is connected to the lower surface 9. The main cutting edge flank 3a and the secondary cutting edge flank 4a are connected by the arc edge flank 5a. The cutting surface 6b is flush with the side surface and connects the side surface, the main cutting edge flank 3a, the secondary cutting edge flank 4a, and the arc edge flank 5a. The other end is connected to the side surface, the main cutting edge flank 3a, the secondary cutting edge flank 4a, and the arc edge flank 5a by the positioning surface 6a.

[0032] The intersection of the main cutting edge flank 3a and the cutting surface 6b forms a main cutting edge 3, the intersection of the secondary cutting edge flank 4a and the cutting surface 6b forms a secondary cutting edge 4, and the intersection of the arc edge flank 5a and the cutting surface 6b forms an arc edge 5. The angle γ2 between the main cutting edge 3 and the secondary cutting edge 4 is 10-20°.

[0033] Embodiment 2

[0034] This embodiment provides a V-groove machining tool, including a blade body 1 and a cutting unit on the side of the blade body 1. The blade body 1 is a quadrilateral body, including an upper surface 10, a lower surface 9, and a plurality of side surfaces connecting the upper surface 10 and the lower surface 9. Clearance chamfers 2 are provided at the joints of the upper surface 10, the lower surface 9, and the side surfaces, and a central positioning hole 20 is provided at its geometric center.

[0035] The cutting units are respectively located on both sides of the blade body 1, and include a main cutting edge flank 3a, a secondary cutting edge flank 4a, an arc cutting edge flank 5a, and a positioning surface 6a. The main cutting edge flank 3a is connected to the upper surface 10, and a clearance groove 8 is provided at the connection between the main cutting edge flank 3a and the upper surface 10. The secondary cutting edge flank 4a is connected to the lower surface 9, and the included angle α between the clearance surface 7 and the vertical surface at the connection between the secondary cutting edge flank 4a and the lower surface 9 is 40 to 50°. The main cutting edge flank 3a and the secondary cutting edge flank 4a are connected by the arc cutting edge flank 5a. The cutting surface 6b is flush with the side surface and connects the side surface, the main cutting edge flank 3a, the secondary cutting edge flank 4a, and the arc cutting edge flank 5a, and the other end is connected to the side surface, the main cutting edge flank 3a, the secondary cutting edge flank 4a, and the arc cutting edge flank 5a by the positioning surface 6a.

[0036] The intersection of the main cutting edge flank 3a and the cutting surface 6b forms a main cutting edge 3, and the included angle between the main cutting edge flank 3a and the upper surface 10 is 5 to 15°. The intersection of the secondary cutting edge flank 4a and the cutting surface 6b forms a secondary cutting edge 4, and the included angle γ1 between the secondary cutting edge 4 and the perpendicular line of the lower surface 9 is 3 to 10°. The included angle γ2 between the main cutting edge 3 and the secondary cutting edge 4 is 10 to 20°. The intersection of the arc cutting edge flank 5a and the cutting surface 6b forms an arc cutting edge 5, and the radius R1 of the arc cutting edge 5 is 0.5 to 5 mm. The distance from the highest point of the arc of the arc cutting edge 5 to the upper surface 10, that is, the maximum cutting depth H1 of the cutting unit is 5 to 10 mm.

[0037] Embodiment 3

[0038] This embodiment provides a V-groove machining tool, such as Figures 1 - 2 which includes a blade body 1 and cutting units on the sides of the blade body 1. The blade body 1 is a quadrilateral body, including an upper surface 10, a lower surface 9, and a plurality of side surfaces connecting the upper surface 10 and the lower surface 9. A clearance chamfer 2 is provided at the connection of the upper surface 10, the lower surface 9, and the side surfaces, and a center positioning hole 20 is provided at its geometric center.

[0039] Such as Figure 3, the cutting units are respectively located on both sides of the blade body 1, and include a major cutting edge flank 3a, a minor cutting edge flank 4a, a circular arc edge flank 5a, and a positioning surface 6a. The major cutting edge flank 3a is connected to the upper surface 10, and a clearance groove 8 is provided at the connection between the major cutting edge flank 3a and the upper surface 10. The minor cutting edge flank 4a is connected to the lower surface 9, and the included angle α between the clearance surface 7 and the vertical surface at the connection between the minor cutting edge flank 4a and the lower surface 9 is 40 - 50°. The major cutting edge flank 3a and the minor cutting edge flank 4a are connected by the circular arc edge flank 5a. The cutting surface 6b is flush with the side surface and connects the side surface, the major cutting edge flank 3a, the minor cutting edge flank 4a, and the circular arc edge flank 5a, and the other end is connected to the side surface, the major cutting edge flank 3a, the minor cutting edge flank 4a, and the circular arc edge flank 5a by the positioning surface 6a.

[0040] As Figure 4 , the major cutting edge flank 3a intersects with the cutting surface 6b to form a major cutting edge 3, and the included angle between the major cutting edge flank 3a and the upper surface 10 is 5 - 15°. The minor cutting edge flank 4a intersects with the cutting surface 6b to form a minor cutting edge 4, and the included angle γ1 between the minor cutting edge 4 and the perpendicular line of the lower surface 9 is 3 - 10°. The included angle γ2 between the major cutting edge 3 and the minor cutting edge 4 is 10 - 20°. The circular arc edge flank 5a intersects with the cutting surface 6b to form a circular arc edge 5, and the radius R1 of the circular arc edge 5 is 0.5 - 5 mm. The distance from the highest point of the circular arc of the circular arc edge 5 to the upper surface 10, that is, the maximum cutting depth H1 of the cutting unit is 5 - 10 mm.

[0041] One end of the cutting surface 6b of the major cutting edge flank 3a, the minor cutting edge flank 4a, and the circular arc edge flank 5a to one end of the positioning surface 6a is inclined. The included angle β1 between the major cutting edge flank 3a and the perpendicular line of the cutting surface 6b is 3 - 8°, and the included angle β2 between the minor cutting edge flank 4a and the perpendicular line of the cutting surface 6b is 3 - 8°; the circular arc edge flank 5a; since the two straight edges are tangent to the circular arc edge 5, the included angle between the circular arc edge flank 5a and the perpendicular line of the cutting surface 6b is also 3 - 8°.

[0042] Example 4

[0043] This embodiment provides a V-groove machining tool, including a blade body 1 and cutting units on the sides of the blade body 1. The blade body 1 is a quadrilateral body, including an upper surface 10, a lower surface 9, and a plurality of side surfaces connecting the upper surface 10 and the lower surface 9. Clearance chamfers 2 are provided at the connections of the upper surface 10, the lower surface 9, and the side surfaces, and a central positioning hole 20 is provided at its geometric center.

[0044] The cutting units are respectively located on both sides of the blade body 1, and include the major cutting edge flank 3a, the minor cutting edge flank 4a, the first circular edge flank, the second circular edge flank, the third circular edge flank, and the positioning surface 6a. The major cutting edge flank 3a is connected to the upper surface 10, and a clearance groove 8 is provided at the connection between the major cutting edge flank 3a and the upper surface 10. The minor cutting edge flank 4a is connected to the lower surface 9, and the included angle α between the clearance surface 7 and the vertical surface at the connection between the minor cutting edge flank 4a and the lower surface 9 is 40 - 50°. The major cutting edge flank 3a and the minor cutting edge flank 4a are connected by the first circular edge flank, the second circular edge flank, and the third circular edge flank. The cutting surface 6b is flush with the side surface and connects the side surface, the major cutting edge flank 3a, the minor cutting edge flank 4a, the first circular edge flank, the second circular edge flank, and the third circular edge flank. The other end is connected to the side surface, the major cutting edge flank 3a, the minor cutting edge flank 4a, the first circular edge flank, the second circular edge flank, and the third circular edge flank by the positioning surface 6a.

[0045] The major cutting edge flank 3a intersects with the cutting surface 6b to form the major cutting edge 3, and the included angle between the major cutting edge flank 3a and the upper surface 10 is 5 - 15°. The minor cutting edge flank 4a intersects with the cutting surface 6b to form the minor cutting edge 4, and the included angle γ1 between the minor cutting edge 4 and the perpendicular line of the lower surface 9 is 3 - 10°. The included angle γ2 between the major cutting edge 3 and the minor cutting edge 4 is 10 - 20°. The first circular edge flank, the second circular edge flank, and the third circular edge flank intersect with the cutting surface 6b to respectively form the first circular edge, the second circular edge, and the third circular edge. The radii R1, R2, and R3 of the three circular edges 5 are 0.5 - 5 mm, and different radii can be selected for the three circular edges, such as Figure 5 shown. The distance from the highest point of the circular arc of the circular edge 5 to the upper surface 10, that is, the maximum cutting depth H1 of the cutting unit is 5 - 10 mm.

[0046] One end of the cutting surface 6b of the major cutting edge flank 3a, the minor cutting edge flank 4a, and the circular edge flank 5a to one end of the positioning surface 6a is inclined. The included angle β1 between the major cutting edge flank 3a and the perpendicular line of the cutting surface 6b is 3 - 8°, and the included angle β2 between the minor cutting edge flank 4a and the perpendicular line of the cutting surface 6b is 3 - 8°; the circular edge flank 5a; since the two straight edges are tangent to the circular edge 5, the included angle between the circular edge flank 5a and the perpendicular line of the cutting surface 6b is also 3 - 8°.

[0047] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A V-groove processing tool, comprising a blade body and a cutting unit on the blade body; characterized in that: The blade body includes an upper surface, a lower surface and a side surface, and a central positioning hole is provided at its geometric center. The cutting unit includes a main cutting edge back angle surface, a secondary cutting edge back angle surface, a circular arc edge back angle surface, a positioning surface and a cutting surface. The main cutting edge back angle surface is connected to the upper surface, the secondary cutting edge back angle surface is connected to the lower surface, and the main cutting edge back angle surface and the secondary cutting edge back angle surface are connected through the circular arc edge back angle surface. The cutting surface and the positioning surface are respectively connected to the side surface, the main cutting edge back angle surface, the secondary cutting edge back angle surface, and the circular arc edge back angle surface. The main cutting edge back angle surface intersects with the cutting surface to form a main cutting edge, the secondary cutting edge back angle surface intersects with the cutting surface to form a secondary cutting edge, and the arc edge back angle surface intersects with the cutting surface to form an arc edge. The angle between the main cutting edge back angle surface and the vertical line of the upper surface is 5 to 15°, and the angle γ2 between the main cutting edge and the secondary cutting edge is 10 to 20°.

2. The V-groove machining tool according to claim 1, characterized in that: An included angle γ1 between the secondary cutting edge and a perpendicular line of the lower surface is 3 to 10°.

3. The V-groove machining tool according to claim 1, characterized in that: The radius R of the arc blade is 0.5-5 mm.

4. The V-groove machining tool according to claim 1, characterized in that: The maximum cutting depth H1 of the cutting unit is 5 to 10 mm.

5. The V-groove machining tool according to claim 1, characterized in that: A clearance groove is provided at the connection between the blade body and the rear angle surface of the main cutting edge.

6. The V-groove machining tool according to claim 1, characterized in that: A clearance surface is arranged at the connection between the auxiliary cutting edge back angle surface and the lower surface, and an included angle α between the clearance surface and the vertical surface is 40-50°.

7. The V-groove machining tool according to claim 1, characterized in that: The included angle β1 between the main cutting edge back angle surface and the perpendicular line of the cutting surface is 3-8°, the included angle β2 between the secondary cutting edge back angle surface and the perpendicular line of the cutting surface is 3-8°, and the included angle between the arc edge back angle surface and the perpendicular line of the cutting surface is 3-8°.

8. The V-groove machining tool according to claim 1, characterized in that: A plurality of arc edges are provided between the main cutting edge and the auxiliary cutting edge.

9. The V-groove machining tool according to claim 1, characterized in that: The connection between the upper surface, the lower surface and the side surface is provided with a chamfer to avoid air.

10. The V-groove machining tool according to claim 1, characterized in that: The blade body is a polygonal body, on which a plurality of cutting units are arranged.

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