Combined face milling cutter

Abstract

The combined face milling cutter comprises a cutter body and a cutter head, a first cutting part and a second cutting part are formed on the cutter head and are arranged from inside to outside in the axial direction of the cutter head, and the diameter of the first cutting part is larger than that of the second cutting part; the first cutting part is provided with a plurality of first blades arranged in the circumferential direction of the tool bit, and the second cutting part is provided with a plurality of second blades arranged in the circumferential direction of the tool bit. Compared with the prior art, the bottom face and the inclined face of the workpiece are machined through the second cutting part, the top face of the workpiece is machined through the first cutting part, and therefore the bottom face, the inclined face and the top face of the workpiece can be machined at the same time, the workpiece machining efficiency is improved, and the workpiece machining time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing tools, in particular to a combined face milling cutter. Background Art

[0002] Milling cutter is one of the commonly used tools in mechanical processing. It can remove materials and process shapes by rotating and cutting the workpiece. There are many types of milling cutters, which can be divided into different types according to different classification standards. For example, according to the shape, it can be divided into cylindrical milling cutters, face milling cutters, end milling cutters, three-face milling cutters, angle milling cutters, etc.; according to the tooth shape, it can be divided into straight tooth milling cutters and spiral tooth milling cutters; according to the number of teeth, it can be divided into coarse tooth milling cutters and fine tooth milling cutters, etc. Milling cutters generally consist of a cutter body, cutter teeth and a clamping part. The cutter body is the main part of the milling cutter, which is used to install and fix the cutter teeth; the cutter teeth are the cutting part, which is used to remove the workpiece material; the clamping part is used to fix the milling cutter on the milling machine.

[0003] A combination milling cutter is a tool that is assembled by two or more milling cutters in a specific way to achieve more complex cutting processes. It can flexibly combine different milling cutters according to processing requirements to improve processing efficiency and precision. According to the different shapes and combinations of cutting edges, combination milling cutters can be divided into many types, such as straight tooth combination milling cutters, helical tooth combination milling cutters, T-type combination milling cutters, sawtooth combination milling cutters, etc.

[0004] A Chinese patent application with application number 201710038354.9 discloses a combined milling cutter, which consists of a side cutter disc, a cutter pad, a cutter shaft, a circular blade, a square blade and an intermediate cutter disc: the side cutter discs are symmetrically mounted on the cutter shaft through a flat key; a plurality of cutter pads are inserted in a divergent shape on each side cutter disc; one end of the cutter pad extends to the inner side of the side cutter disc; a plurality of circular blades are fixedly mounted on the end of the cutter pad extending to the inner side of the side cutter disc; a plurality of intermediate cutter discs are mounted between the side cutter discs; a plurality of cutter teeth are evenly distributed on the circumferential surface of each intermediate cutter disc; a square blade is fixedly mounted on each cutter tooth. A Chinese patent with application number 202011623813.8 discloses a special milling cutter for combined contour forming of a rail fork. The above-mentioned special milling cutter for combined contour forming comprises: a shank, a cutter body and a blade; wherein the cutter body is fixedly connected to the bottom of the shank; the cutter body is "T"-shaped and has a circular cross-section, and the connection between the vertical part and the horizontal part of the "T" is transitioned through an arc surface; several rows of blades are evenly distributed on the cutter body, and each row of blades is composed of blades spirally arranged along the axial direction of the cutter body on the circumferential surface of the vertical part of the "T" shape, the lower end surface of the horizontal part and the arc surface of the connection, and the blades of two adjacent rows are staggered and spirally overlapped, so that the cutting trajectories of the two adjacent rows of blades are continuously fitted into the contour line of the rail head to be formed.

[0005] The above-mentioned disclosed prior art consists of a side cutter disc and a middle cutter disc, and milling work is achieved through the cooperation of the side cutter disc and the middle cutter disc. However, the existing combined milling cutter cannot achieve simultaneous processing of the bottom surface, inclined surface and top surface of the workpiece. Therefore, during processing, the bottom surface, inclined surface and top surface of the workpiece need to be processed separately, which reduces the processing efficiency and increases the processing time. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provides a combined face milling cutter capable of processing the bottom surface, the inclined surface and the top surface of a workpiece at the same time.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a combined face milling cutter, including a cutter body and a cutter head, a first cutting portion and a second cutting portion are formed on the cutter head, the first cutting portion and the second cutting portion are arranged from the inside to the outside along the axial direction of the cutter head, and the diameter of the first cutting portion is greater than the diameter of the second cutting portion; the first cutting portion is provided with a plurality of first blades arranged along the circumferential direction of the cutter head, and the second cutting portion is provided with a plurality of second blades arranged along the circumferential direction of the cutter head.

[0008] As a preferred solution of the present invention, the first blades and the second blades have the same orientation.

[0009] As a preferred solution of the utility model, the first cutting portion is provided with a plurality of first mounting seats arranged along the circumferential direction of the first cutting portion, a first mounting groove is formed on the first mounting seat, and a first fixing hole for mounting the first blade is provided in the middle of the first mounting groove.

[0010] As a preferred solution of the utility model, the first blade is installed in the first installation groove, and the first blade is provided with a first installation hole matching with the first fixing hole.

[0011] As a preferred solution of the present invention, a first cooling hole for cooling the first blade is formed at the end of the first mounting seat.

[0012] As a preferred solution of the utility model, the second cutting portion is provided with a plurality of second mounting seats arranged along the circumferential direction of the second cutting portion, the second mounting seats are formed with second mounting grooves, and the middle of the second mounting groove is provided with a second fixing hole for mounting the second blade.

[0013] As a preferred solution of the utility model, the second blade is installed in the second installation groove, and the second blade is provided with a second installation hole matching with the second fixing hole.

[0014] As a preferred solution of the present invention, a second cooling hole for cooling the second blade is formed at the end of the second mounting seat.

[0015] As a preferred solution of the utility model, a liquid inlet hole arranged along the axial direction of the cutter body is formed on the cutter body, the liquid inlet hole extends into the cutter head, and the first cooling hole and the second cooling hole are both connected to the liquid inlet hole.

[0016] As a preferred solution of the present utility model, the knife body and the knife head are an integrally formed structure.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By arranging a first cutting part and a second cutting part on the cutter head, the first cutting part is provided with a plurality of first blades, the second cutting part is provided with a plurality of second blades, and the diameter of the first cutting part is greater than that of the second cutting part, and the first cutting part and the second cutting part are arranged from inside to outside along the axial direction of the cutter head, when processing a workpiece, the bottom surface and the inclined surface of the workpiece are processed by the second cutting part, and the top surface of the workpiece is processed by the first cutting part, so that the bottom surface, the inclined surface and the top surface of the workpiece can be processed at the same time, thereby improving the efficiency of workpiece processing and reducing the time of workpiece processing;

[0019] 2. Furthermore, by arranging a first cooling hole at the end of the first mounting seat, arranging a second cooling hole at the end of the second mounting seat, and arranging a liquid inlet hole connected with the first cooling hole and the second cooling hole on the tool body, the coolant enters the tool body through the liquid inlet hole, and flows to the first blade and the second blade respectively through the first cooling hole and the second cooling hole, thereby realizing the cooling of the first blade and the second blade, and reducing the wear of the cutting edges of the first blade and the second blade caused by long cutting time and excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the cutter head of the utility model;

[0022] Figure 3 It is a cross-sectional view of the utility model;

[0023] Figure 4 is a schematic diagram of the structure of the first blade;

[0024] Figure 5 This is a schematic diagram of the structure of the second blade

[0025] Figure markings: tool body 1, liquid inlet hole 101, tool head 2, first cutting part 3, first mounting seat 301, first mounting groove 3011, first fixing hole 3012, first cooling hole 3013, first blade 302, first mounting hole 3021, second cutting part 4, second mounting seat 401, second mounting groove 4011, second fixing hole 4012, second cooling hole 4013, second blade 402, second mounting hole 4021. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-Figure 5 As shown, a combined face milling cutter includes a cutter body 1 and a cutter head 2, a first cutting portion 3 and a second cutting portion 4 are formed on the cutter head 2, the first cutting portion 3 and the second cutting portion 4 are arranged from inside to outside along the axial direction of the cutter head 2, and the diameter of the first cutting portion 3 is greater than the diameter of the second cutting portion 4; the first cutting portion 3 is provided with a plurality of first blades 302 arranged along the circumferential direction of the cutter head 2, and the second cutting portion 4 is provided with a plurality of second blades 402 arranged along the circumferential direction of the cutter head 2.

[0028] Furthermore, the cutter body 1 is installed on a milling machine, the cutter body 1 is a truncated cone structure, the cutter head 2 is arranged at the end of the cutter body 1, and the cutter head 2 is located at the end of the cutter body 1 with a larger diameter, the cutter body 1 and the cutter head 2 are coaxially arranged, the first cutting portion 3 is arranged at the connection between the cutter head 2 and the cutter body 1, the second cutting portion 4 is arranged at the end of the cutter head 2, the first cutting portion 3, the second cutting portion 4 are coaxially arranged with the cutter body 1, the first blade 302 is arranged on the side wall of the first cutting portion 3, and the second blade 402 is arranged on the side wall of the second cutting portion 4, the bottom surface and the inclined surface of the workpiece are processed by the first blade 302 on the first cutting portion 3, and the top surface of the workpiece is processed by the second cutting portion 4, so that the bottom surface, inclined surface and top surface of the workpiece can be processed at the same time, thereby improving the efficiency of workpiece processing and reducing the time of workpiece processing.

[0029] In addition, the cutter body 1 and the cutter head 2 are integrally formed to improve the rigidity of the cutter itself and provide a basis for the stability of the cutter during machining. The first blade 302 and the second blade 402 both use standard milling blades to meet high-speed cutting requirements and reduce blade costs.

[0030] The first blades 302 and the second blades 402 have the same orientation, which further ensures that the first blades 302 and the second blades 402 can process the workpiece simultaneously when they rotate in the same direction.

[0031] The first cutting portion 3 is provided with a plurality of first mounting seats 301 arranged along the circumferential direction of the first cutting portion 3, a first mounting groove 3011 is formed on the first mounting seat 301, and a first fixing hole 3012 for mounting the first blade 302 is provided in the middle of the first mounting groove 3011. Furthermore, a plurality of first mounting seats 301 are arranged on the side wall of the first cutting portion 3, and the plurality of first mounting seats 301 are evenly distributed, the end face of the first mounting seat 301 is a planar structure, and the first mounting groove 3011 is arranged on the end face of the first mounting seat 301.

[0032] In addition, the first blade 302 is installed in the first installation groove 3011, and the first blade 302 is provided with a first installation hole 3021 matching the first fixing hole 3012, and the first blade 302 is installed and fixed in the first installation groove 3011 by screws passing through the first installation hole 3021 and the first fixing hole 3012.

[0033] A first cooling hole 3013 for cooling the first blade 302 is formed at the end of the first mounting seat 301 . Furthermore, an opening of the first cooling hole 3013 is arranged at the first blade 302 , and coolant cools the first blade 302 through the first cooling hole 3013 .

[0034] The second cutting portion 4 is provided with a plurality of second mounting seats 401 arranged along the circumferential direction of the second cutting portion 4, a second mounting groove 4011 is formed on the second mounting seat 401, and a second fixing hole 4012 for mounting the second blade 402 is provided in the middle of the second mounting groove 4011. Furthermore, a plurality of second mounting seats 401 are arranged on the side wall of the second cutting portion 4, and the plurality of second mounting seats 401 are evenly distributed, the end face of the second mounting seat 401 is a planar structure, and the second mounting groove 4011 is arranged on the end face of the second mounting seat 401.

[0035] In addition, the second blade 402 is installed in the second installation slot 4011, and the second blade 402 is provided with a second installation hole 4021 matching the second fixing hole 4012, and the second blade 402 is installed and fixed in the second installation slot 4011 by screws passing through the second installation hole 4021 and the second fixing hole 4012.

[0036] A second cooling hole 4013 for cooling the second blade 402 is formed at the end of the second mounting seat 401 . Further, an opening of the second cooling hole 4013 is arranged at the second blade 402 , and the coolant cools the second blade 402 through the second cooling hole 4013 .

[0037] A liquid inlet hole 101 is formed on the cutter body 1 along the axial direction of the cutter body 1, and the liquid inlet hole 101 extends into the cutter head 2. The first cooling hole 3013 and the second cooling hole 4013 are both connected to the liquid inlet hole 101. Furthermore, the liquid inlet hole 101 is arranged in the middle of the cutter body 1, and the liquid inlet hole 101 runs through the entire cutter body 1, and the liquid inlet hole 101 extends into the cutter head 2. The liquid inlet hole 101 is connected to a cooling pipe on an external milling machine, and the coolant enters the liquid inlet hole 101 through the external pipe, and cools the first blade 302 and the second blade 402 through the first cooling hole 3013 and the second cooling hole 4013.

[0038] In addition, when installing the first blade 302 and the second blade 402, the end face runout of each blade is controlled within 0.02 to ensure that the finished surface is bright and clear. When in use, two planes and a 30° bevel can be milled quickly and conveniently, and the stability and roughness requirements can be ensured.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0040] Although the following terms are used more frequently in this article: tool body 1, liquid inlet 101, tool head 2, first cutting portion 3, first mounting seat 301, first mounting groove 3011, first fixing hole 3012, first cooling hole 3013, first blade 302, first mounting hole 3021, second cutting portion 4, second mounting seat 401, second mounting groove 4011, second fixing hole 4012, second cooling hole 4013, second blade 402, second mounting hole 4021, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A combined face milling cutter, comprising a cutter body (1) and a cutter head (2), characterized in that: The cutter head (2) is formed with a first cutting portion (3) and a second cutting portion (4), the first cutting portion (3) and the second cutting portion (4) being arranged from the inside to the outside along the axial direction of the cutter head (2), the diameter of the first cutting portion (3) being greater than the diameter of the second cutting portion (4); the first cutting portion (3) is provided with a plurality of first blades (302) arranged along the circumferential direction of the cutter head (2), and the second cutting portion (4) is provided with a plurality of second blades (402) arranged along the circumferential direction of the cutter head (2).

2. A combined face milling cutter according to claim 1, characterized in that: The first blades (302) and the second blades (402) are oriented in the same direction.

3. A combined face milling cutter according to claim 1, characterized in that: The first cutting portion (3) is provided with a plurality of first mounting seats (301) arranged along the circumferential direction of the first cutting portion (3), a first mounting groove (3011) is formed on the first mounting seat (301), and a first fixing hole (3012) for mounting the first blade (302) is provided in the middle of the first mounting groove (3011).

4. A combined face milling cutter according to claim 3, characterized in that: The first blade (302) is installed in the first installation groove (3011), and the first blade (302) is provided with a first installation hole (3021) that matches the first fixing hole (3012).

5. A combined face milling cutter according to claim 3, characterized in that: A first cooling hole (3013) for cooling the first blade (302) is formed at the end of the first mounting seat (301).

6. A combined face milling cutter according to claim 5, characterized in that: The second cutting portion (4) is provided with a plurality of second mounting seats (401) arranged along the circumferential direction of the second cutting portion (4), a second mounting groove (4011) is formed on the second mounting seat (401), and a second fixing hole (4012) for mounting the second blade (402) is provided in the middle of the second mounting groove (4011).

7. A combined face milling cutter according to claim 6, characterized in that: The second blade (402) is installed in the second installation groove (4011), and the second blade (402) is provided with a second installation hole (4021) that matches the second fixing hole (4012).

8. The combined face milling cutter according to claim 6, characterized in that: A second cooling hole (4013) for cooling the second blade (402) is formed at the end of the second mounting seat (401).

9. A combined face milling cutter according to claim 8, characterized in that: The cutter body (1) is formed with a liquid inlet hole (101) arranged along the axial direction of the cutter body (1), the liquid inlet hole (101) extends into the cutter head (2), and the first cooling hole (3013) and the second cooling hole (4013) are both in communication with the liquid inlet hole (101).

10. The combined face milling cutter according to claim 1, characterized in that: The blade body (1) and the blade head (2) are an integrally formed structure.

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