Combined forming cutter

Abstract

The utility model relates to the technical field of metal cutting machining, in particular to a combined forming cutter which comprises a cutter handle and cutting edges, the cutting edges comprise the first forming cutting edge and the second forming cutting edge, and the first forming cutting edge and the second forming cutting edge are arranged around the circumference of the rotating axis of the cutter handle at intervals. The first forming cutting edge is provided with a first cutting edge opening and a second cutting edge opening, a first cutting edge is formed between the first cutting edge opening and the second cutting edge opening, the second forming cutting edge is provided with a plurality of cutting edge openings, and a cutting edge is formed between every two adjacent cutting edge openings. The cutter handle is provided with the two different forming cutting edges, each forming cutting edge is provided with the cutting edge used for machining the contours of different 3C products, when the contours of the specific 3C products are machined, the step of repeatedly disassembling and clamping the cutter can be omitted, the cutter can machine the contours of multiple 3C products through the two cutting edges, machining efficiency is effectively improved, and machining cost is reduced. And the tool changing time is retrieved, the production time cost is reduced, and the production convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cutting and processing, in particular to a combined forming tool. Background Art

[0002] 3C products refer to electronic products used by consumers in their daily lives, mainly including computers, communication equipment, and consumer electronics. These products cover a variety of electronic devices, such as smart phones, tablet computers, televisions, audio equipment, cameras, etc.

[0003] Among various 3C products that need to be processed, there are a large number of special-shaped contours, which requires the replacement of multiple different forming tools during processing. The existing forming tools on the market for processing special-shaped contours of 3C products generally have only one contour blade. During processing, it is necessary to prepare multiple different forming tools to meet the processing needs. Replacing the corresponding forming tools according to different contour features during processing will lead to problems and situations in the overall processing, such as low processing efficiency, long processing time, many tool changes, and complicated processing procedures, which is not conducive to production efficiency and convenience.

[0004] In view of the above shortcomings, we need to develop a combined forming tool to meet the needs of the majority of users. Utility Model Content

[0005] In view of the above-mentioned problems that the existing forming tools used for processing 3C products generally have only one contour blade, many tool changes during processing, low processing efficiency, long processing time, and complex processing procedures, the technical solution adopted by the utility model to solve the technical problems is:

[0006] A combined forming tool comprises a tool handle for easy clamping and a blade arranged on the tool handle, wherein the blade comprises a first forming blade and a second forming blade, and the first forming blade and the second forming blade are arranged at intervals around the rotation axis of the tool handle;

[0007] The first shaped blade is respectively provided with a first blade edge and a second blade edge arranged at intervals along the length direction of the handle, and a first cutting edge is formed between the first blade edge and the second blade edge;

[0008] The second molded blade is respectively provided with a third blade edge, a fourth blade edge and a fifth blade edge arranged at intervals along the length direction of the shank, a second cutting edge is formed between the third blade edge and the fourth blade edge, and a third cutting edge is formed between the fourth blade edge and the fifth blade edge.

[0009] Furthermore, the second blade edge is provided with a first shaping edge and a second shaping edge which are staggered, the first shaping edge is arranged at a position close to the first cutting edge, and the second shaping edge is arranged at a position far away from the first cutting edge.

[0010] Furthermore, the outer diameter of the tip of the first shaping edge is smaller than the outer diameter of the tip of the second shaping edge.

[0011] Furthermore, the fourth cutting edge is provided with a third shaping edge and a fourth shaping edge which are staggered, the third shaping edge is arranged at a position close to the second cutting edge, and the fourth shaping edge is arranged at a position far away from the third cutting edge.

[0012] Furthermore, the outer diameter of the blade tip of the third shaping edge is greater than the outer diameter of the blade tip of the fourth shaping edge.

[0013] Furthermore, first inclined cutting edges are provided on both sides of the first cutting edge, and the cutting edges of the first inclined cutting edges on both sides form an angle E.

[0014] Furthermore, the first cutting edge is provided with a fifth shaping edge, and the tip of the first inclined cutting edge forms an angle F with the fifth shaping edge.

[0015] Furthermore, a second inclined cutting edge is provided on a side of the third cutting edge close to the second cutting edge, and a cutting edge tip of the second inclined cutting edge forms an angle N with a cutting edge tip of the fourth shaping edge.

[0016] Furthermore, the third cutting edge is provided with a sixth shaping edge, the fifth cutting edge is provided with a seventh shaping edge, the tip of the sixth shaping edge forms a side edge angle with the side edge tip of the second cutting edge, and the seventh shaping edge forms a side edge angle with the side edge tip of the third cutting edge.

[0017] Furthermore, a first machining auxiliary edge is provided on the side of the second cutting edge away from the first cutting edge, a second machining auxiliary edge is provided on the side of the fifth cutting edge away from the third cutting edge, and the angle between the first machining auxiliary edge and the axis and the angle between the second machining auxiliary edge and the axis are both acute angles.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The tool handle of the utility model is provided with two different forming blades, each forming blade is provided with a cutting edge for processing different 3C product contours. Compared with the forming tools with only one forming blade in the past, the utility model can integrate two types at the same time. When processing the contour of a specific 3C product, the steps of repeatedly disassembling and clamping the tool can be avoided. One tool and two blades can process the contours of multiple 3C products, effectively improving the processing efficiency, retrieval tool change time, reducing production time costs, and improving production convenience.

[0020] 2. The utility model arranges two different forming blades on the blade, and each forming blade is respectively provided with a plurality of shaping blades and cutting blades. Position and angle restrictions are adopted between the shaping blades and the cutting blades, so as to further limit the shape of the tool and the contour of the cutting blade, so as to facilitate users to mass produce the forming tools, reduce production costs and use costs, improve production efficiency, and bring ideal economic benefits to users.

[0021] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a three-dimensional diagram of a combined forming tool.

[0023] Figure 2 This is a blade profile diagram of the first formed blade of the utility model.

[0024] Figure 3 This is a blade profile diagram of the second molded blade of the utility model.

[0025] Figure 4 This is a blade profile diagram of the first formed blade of the utility model.

[0026] Figure 5 This is a blade profile diagram of the second molded blade of the utility model.

[0027] Figure 6 This is a blade profile diagram of the first formed blade of the utility model.

[0028] Figure 7 This is a blade profile diagram of the second molded blade of the utility model. DETAILED DESCRIPTION

[0029] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7As shown, a combined forming tool comprises a tool handle 1 for easy clamping and a blade 2 arranged on the tool handle 1, wherein the blade 2 comprises a first forming blade 3 and a second forming blade 4, and the first forming blade 3 and the second forming blade 4 are arranged at intervals around the circumference of the rotation axis of the tool handle 1;

[0031] The first molded blade 3 is respectively provided with a first blade edge 31 and a second blade edge 32 arranged at intervals along the length direction of the handle 1, and a first cutting edge 33 is formed between the first blade edge 31 and the second blade edge 32;

[0032] The second molded blade 4 is respectively provided with a third blade edge 41, a fourth blade edge 42 and a fifth blade edge 43 which are arranged at intervals along the length direction of the shank 1; a second cutting edge 44 is formed between the third blade edge 41 and the fourth blade edge 42; a third cutting edge 45 is formed between the fourth blade edge 42 and the fifth blade edge 43.

[0033] Specifically, in some embodiments, the tool handle 1 is a part of the tool for providing a clamping position. The tool handle 1 may be a tool handle structure of a cube, a cuboid or a cylinder. One end of the tool handle 1 is a clamping part, and the other end of the tool handle 1 is a processing part. The clamping part may be a smooth cube, a cuboid or a cylinder, and a limit structure for limiting the rotation position for synchronous rotation may also be provided. The processing part is the blade body part of the tool handle 1 used for cutting processing. The blade 2 is the actual cutting part used for cutting materials on the surface of the workpiece when the tool handle 1 rotates at a high speed. The blade 2 may be a cutting contour blade formed by a user through grinding with a grinding machine or a grinder. The blade 2 is provided on the processing part of the tool handle 1. The tool handle 1 may be provided with two or more blades 2. The blades 2 may be arranged on the processing part of the tool handle 1 at intervals around the axis or center line of the tool handle 1. The blade 2 may be a straight, curved, spiral or irregularly shaped cutting blade. The blade 2 includes two blade shapes, a first formed blade 3 and a second formed blade 4.

[0034] The first molded blade 3 is provided with a first blade edge 31 and a second blade edge 32 for cutting processing, the first blade edge 31 and the second blade edge 32 are arranged at intervals along the length direction of the handle 1, the first blade edge 31 is arranged at a position of the first molded blade 3 close to the end of the handle 1, the second blade edge 32 is arranged at a position of the first molded blade 3 close to the center of the handle 1, and the first cutting edge 33 extends from the blade body in the radial direction toward the handle 1 to a blade tip for cutting processing and is arranged between the first blade edge 31 and the second blade edge 32;

[0035] The second molded blade 4 is provided with a third blade edge 41, a fourth blade edge 42 and a fifth blade edge 43 for cutting processing, and the third blade edge 41, the fourth blade edge 42 and the fifth blade edge 43 are arranged at intervals along the length direction of the handle 1, the third blade edge 41 is arranged at a position of the second molded blade 4 close to the end of the handle 1, the fifth blade edge 43 is arranged at a position of the second molded blade 4 close to the center of the handle 1, the fourth blade edge 42 is arranged at intervals between the third blade edge 41 and the fifth blade edge 43, the second cutting edge 44 and the third cutting edge 45 extend from the blade body in the radial direction toward the handle 1 to form a cutting tip for cutting processing, the second cutting edge 44 is arranged between the third blade edge 41 and the fourth blade edge 42, and the third cutting edge 45 is arranged between the fourth blade edge 42 and the fifth blade edge 43;

[0036] When the tool holder 1 rotates or moves linearly to process the workpiece, the first cutting edge 33, the second cutting edge 44 and the third cutting edge 45 respectively contact the workpiece surface and use the tool tip to cut a certain depth of material on the workpiece surface. After multiple processing, the workpiece shape that meets the production requirements can be cut to meet the actual processing needs of the 3C product shape contour.

[0037] More specifically, the cutting edge length of the first cutting edge 31 is dimension A, the cutting edge length of the first cutting edge 33 is dimension B, the cutting edge length of the second cutting edge 32 is dimension C, the total cutting edge length of the first forming blade 3 satisfies A+B+C, the height difference between the cutting edge of the first cutting edge 33 and the cutting edge of the first cutting edge 31 is dimension D, and dimensions A, B, C and D can be adjusted to meet the actual processing needs of the outer contour of the 3C product.

[0038] More specifically, the cutting edge length of the third cutting edge 41 is dimension G, the cutting edge length of the second cutting edge 44 is dimension H, the cutting edge length of the fourth cutting edge 42 is dimension J, the cutting edge length of the third cutting edge 45 is dimension K, and the cutting edge length of the fifth cutting edge 43 is dimension L. The total cutting edge length of the second forming blade 4 satisfies G+H+J+K+L, the height difference between the cutting edge of the second cutting edge 44 and the cutting edge of the third cutting edge 41 is dimension P, and the height difference between the cutting edge of the third cutting edge 45 and the cutting edge of the fifth cutting edge 43 is dimension Q. Dimensions G, H, J, K, L, P and Q can be adjusted to meet the actual processing needs of the outer contour of 3C products.

[0039] like Figure 4 As shown, the second blade edge 32 is respectively provided with a first shaping edge 321 and a second shaping edge 322 which are staggered. The first shaping edge 321 is arranged at a position close to the first cutting edge 33 , and the second shaping edge 322 is arranged at a position far away from the first cutting edge 33 .

[0040] Specifically, in some embodiments, the outer diameters of the first shaping edge 321 and the second shaping edge 322 are offset and arranged at the bottom position of the second cutting edge 32 close to the center of the handle 1, the first shaping edge 321 is arranged at the position of the second cutting edge 32 close to the first cutting edge 33, and the second shaping edge 322 is arranged at the position of the second cutting edge 32 away from the first cutting edge 33, and the tip of the first shaping edge 321 and the tip of the second shaping edge 322 are in a high and low offset structure in terms of diameter position to meet the actual processing needs of the outer contour of 3C products.

[0041] More specifically, a first transition step 324 is provided at the step position between the first shaping edge 321 and the second shaping edge 322. The first transition step 324 and the first shaping edge 321 form an inclined step tip. An obtuse angle is formed between the step tip and the first shaping edge 321 to meet the actual processing needs of the 3C product profile.

[0042] like Figure 4 As shown, the outer diameter of the blade tip of the first shaping edge 321 is smaller than the outer diameter of the blade tip of the second shaping edge 322 .

[0043] Specifically, in some embodiments, the outer diameter of the blade tip refers to the distance between the end of the cutting edge away from the center of the shank 1 and the center of the shank 1. This distance determines the position of the cutting edge, and also determines the cutting depth and cutting profile of the tool. The outer diameter of the blade tip of the first shaping blade 321 is smaller than the outer diameter of the blade tip of the second shaping blade 322, so that the blade tip of the second shaping blade 322 protrudes and is higher than the first shaping blade 321 by a certain distance. A first transition step 324 is formed at the step position between the first shaping blade 321 and the second shaping blade 322. The blade tip of the first transition step 324 faces the first cutting edge 33, and an obtuse angle is formed between the step blade tip and the first shaping blade 321 toward the first cutting edge 33 to meet the actual processing needs of the external profile of 3C products.

[0044] like Figure 5 As shown, the fourth cutting edge 42 is provided with a third shaping edge 421 and a fourth shaping edge 422 which are staggered. The third shaping edge 421 is arranged near the second cutting edge 44 , and the fourth shaping edge 422 is arranged far away from the third cutting edge 45 .

[0045] Specifically, in some embodiments, the outer diameters of the third shaping edge 421 and the fourth shaping edge 422 are offset and arranged at the bottom position of the fourth cutting edge 42 near the center of the shank 1, the third shaping edge 421 is arranged at the fourth cutting edge 42 near the second cutting edge 44, the fourth shaping edge 422 is arranged at the fourth cutting edge 42 near the third cutting edge 45, and the tip of the third shaping edge 421 and the tip of the fourth shaping edge 422 are in a high and low offset structure in terms of diameter position to meet the actual processing needs of the external contour of 3C products.

[0046] More specifically, a second transition step 423 is provided at the step position between the third shaping edge 421 and the fourth shaping edge 422. The second transition step 423 and the fourth shaping edge 422 form an inclined step tip. An acute angle is formed between the step tip and the fourth shaping edge 422 to meet the actual processing needs of the 3C product profile.

[0047] like Figure 5 As shown, the outer diameter of the blade tip of the third shaping edge 421 is greater than the outer diameter of the blade tip of the fourth shaping edge 422 .

[0048] Specifically, in some embodiments, the outer diameter of the blade tip refers to the distance between the end of the cutting edge away from the center of the shank 1 and the center of the shank 1. This distance determines the position of the cutting edge, and also determines the cutting depth and cutting profile of the tool. The outer diameter of the blade tip of the third shaping blade 421 is greater than the outer diameter of the blade tip of the fourth shaping blade 422, so that the blade tip of the third shaping blade 421 protrudes and is higher than the fourth shaping blade 422 by a certain distance, and a second transition step 423 is formed at the step position between the third shaping blade 421 and the fourth shaping blade 422. The blade tip of the second transition step 423 faces the third cutting edge 45, and an acute angle is formed between the step blade tip and the fourth shaping blade 422, which is set toward the third cutting edge 45, so as to meet the actual processing needs of the external profile of 3C products.

[0049] like Figure 4 and Figure 6 As shown, first inclined cutting edges 331 are provided on both sides of the first cutting edge 33, and the cutting edges 331 on both sides form an angle E.

[0050] Specifically, in some embodiments, the first inclined cutting edge 331 is respectively arranged on both sides of the first cutting edge 33, and can be symmetrically arranged with respect to the center of the first cutting edge 33, or can be asymmetrically arranged, and the cutting tips of the first inclined cutting edges 331 on both sides form an angle E, and the angle range of the angle E is controlled between 0 degrees and 180 degrees. The cutting tip of the first inclined cutting edge 331 forms an obtuse angle with the cutting tip of the first cutting edge 33 to meet the actual processing needs of the outer contour of the 3C product.

[0051] like Figure 4and Figure 6 As shown, the first cutting edge 31 is provided with a fifth shaping edge 311 , and the tip of the first inclined cutting edge 331 forms an angle F with the fifth shaping edge 311 .

[0052] Specifically, in some embodiments, the fifth shaping edge 311 is the main cutting edge of the first cutting edge 31, the fifth shaping edge 311 is connected to the first inclined cutting edge 331, and a completed cutting profile is formed with the first inclined cutting edge 331 through the first inclined cutting edge 331 and the first cutting edge 33, a rounded edge for transition connection may be provided between the fifth shaping edge 311 and the first inclined cutting edge 331, the tip of the fifth shaping edge 311 forms an angle F with the tip of the first inclined cutting edge 331, and the angle range of the angle F is controlled between 90 degrees and 180 degrees, the tip of the fifth shaping edge 311 and the tip of the first cutting edge 33 may be parallel or non-parallel to meet the actual processing needs of the external profile of 3C products.

[0053] like Figure 5 and Figure 7 As shown, a second inclined cutting edge 451 is provided on a side of the third cutting edge 45 close to the second cutting edge 44 , and the tip of the second inclined cutting edge 451 forms an angle N with the tip of the fourth shaping edge 422 .

[0054] Specifically, in some embodiments, the second inclined cutting edge 451 is respectively arranged on the side of the third cutting edge 45 close to the second cutting edge 44, and the tip of the second inclined cutting edge 451 forms an angle N with the tip of the fourth shaping edge 422, and the angle range of the angle N is controlled between 90 degrees and 180 degrees. The tip of the second inclined cutting edge 451 forms an obtuse angle with the tip of the third cutting edge 45 to meet the actual processing needs of the outer contour of the 3C product.

[0055] like Figure 5 As shown, the third cutting edge 41 is provided with a sixth shaping edge 411, and the fifth cutting edge 43 is provided with a seventh shaping edge 431. The tip of the sixth shaping edge 411 forms a side edge angle with the side edge tip of the second cutting edge 44, and the seventh shaping edge 431 forms a side edge angle with the side edge tip of the third cutting edge 45.

[0056] Specifically, in some embodiments, the sixth shaping edge 411 is the main cutting edge of the third cutting edge 41, the seventh shaping edge 431 is the main cutting edge of the fifth cutting edge 43, the sixth shaping edge 411 is connected to the tip of the second cutting edge 44 near the third cutting edge 41, the seventh shaping edge 431 is connected to the tip of the third cutting edge 45 near the fifth cutting edge 43, and a rounded edge for transition connection can be provided between the sixth shaping edge 411 and the second cutting edge 44, and the tip of the sixth shaping edge 411 is connected to the tip of the second cutting edge 45 near the fifth cutting edge 43. The side cutting edge tip of the cutting edge 44 forms a side cutting edge angle, and the side cutting edge tips of the seventh shaping cutting edge 431 and the third cutting edge 45 form a side cutting edge angle, and the angle range of the side cutting edge angle is controlled between 60 degrees and 120 degrees. The cutting edge tip of the sixth shaping cutting edge 411 and the cutting edge tip of the second cutting edge 44 can be parallel or non-parallel, and the cutting edge tip of the seventh shaping cutting edge 431 and the cutting edge tip of the third cutting edge 45 can be parallel or non-parallel to meet the actual processing needs of the external contour of 3C products.

[0057] like Figures 4 to 7 As shown, a first machining auxiliary edge 323 is provided on the side of the second cutting edge 32 away from the first cutting edge 33, and a second machining auxiliary edge 432 is provided on the side of the fifth cutting edge 43 away from the third cutting edge 45, and the angle between the first machining auxiliary edge and the axis and the angle between the second machining auxiliary edge 432 and the axis are both acute angles.

[0058] Specifically, in some embodiments, the first machining auxiliary edge 323 is a transition cutting edge of the second cutting edge 32 close to the clamping portion of the tool handle 1, and the first machining auxiliary edge 323 is obliquely arranged between the second cutting edge 32 and the outer surface of the tool handle 1, and the second machining auxiliary edge 432 is a transition cutting edge of the fifth cutting edge 43 close to the clamping portion of the tool handle 1, and the second machining auxiliary edge 432 is obliquely arranged between the fifth cutting edge 43 and the outer surface of the tool handle 1. The transition cutting edge is generally less involved in cutting processing, and mainly plays a role in avoiding workpieces or avoiding collisions. The angle between the tip of the first machining auxiliary edge 323 and the axis of the tool handle 1 is X, and the angle between the tip of the second machining auxiliary edge 432 and the axis of the tool handle 1 is Y. Both the angle X and the angle Y are acute angles. Optionally, the angle X and the angle Y can be the same angle or different angles to meet the actual processing needs of the outer contour of the 3C product.

[0059] like Figures 1 to 7 As shown, the specific implementation of Example 1 of the utility model is as follows:

[0060] Four blades 2 are arranged on the handle 1 of the combined forming tool. The blade shape of two blades 2 arranged at intervals is a first forming blade 3, and the blade shape of the other two blades 2 arranged at intervals is a second forming blade 4. The first forming blade 3 and the second forming blade 3 are formed as follows Figure 1The adjacent blades shown are arranged in an interval manner with different blade shapes;

[0061] During cutting, the machine tool chuck drives the tool holder 1 to rotate, and the tool holder 1 drives the first forming blade 3 and the second forming blade 3 to rotate in a circle. The first forming blade 3 and the second forming blade 3 alternately contact the workpiece so that the material on the workpiece surface is cut off by the first forming blade 3 and the second forming blade 3.

[0062] like Figures 1 to 7 As shown, the specific implementation of Example 2 of the utility model is as follows:

[0063] Different from the embodiment 1, the handle 1 of the embodiment is provided with more than four blades 2, the total number of blades 2 is a multiple of 2, half of the blades 2 are first formed blades 3, and the other half of the blades 2 are second formed blades 4. The first formed blades 3 and the second formed blades 3 are formed as follows: Figure 1 The adjacent blades shown are arranged in an interval manner with different blade shapes.

[0064] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. A combined forming tool, characterized in that: The invention comprises a knife handle (1) which is easy to clamp and a blade (2) arranged on the knife handle (1), characterized in that the blade (2) comprises a first molded blade (3) and a second molded blade (4), and the first molded blade (3) and the second molded blade (4) are arranged at intervals around the circumference of the rotation axis of the knife handle (1); The first molded blade (3) is respectively provided with a first blade edge (31) and a second blade edge (32) which are arranged at intervals along the length direction of the blade handle (1), and a first cutting edge (33) is formed between the first blade edge (31) and the second blade edge (32); The second molded blade (4) is respectively provided with a third blade edge (41), a fourth blade edge (42) and a fifth blade edge (43) which are arranged at intervals along the length direction of the blade handle (1); a second cutting edge (44) is formed between the third blade edge (41) and the fourth blade edge (42); and a third cutting edge (45) is formed between the fourth blade edge (42) and the fifth blade edge (43).

2. A combined forming tool according to claim 1, characterized in that: The second blade edge (32) is respectively provided with a first shaping edge (321) and a second shaping edge (322) which are staggered, wherein the first shaping edge (321) is arranged at a position close to the first cutting edge (33), and the second shaping edge (322) is arranged at a position far from the first cutting edge (33).

3. A combined forming tool according to claim 2, characterized in that: The outer diameter of the blade tip of the first shaping blade (321) is smaller than the outer diameter of the blade tip of the second shaping blade (322).

4. A combined forming tool according to claim 1, characterized in that: The fourth cutting edge (42) is respectively provided with a third shaping edge (421) and a fourth shaping edge (422) which are arranged in an offset manner; the third shaping edge (421) is arranged at a position close to the second cutting edge (44), and the fourth shaping edge (422) is arranged at a position away from the third cutting edge (45).

5. A combined forming tool according to claim 4, characterized in that: The outer diameter of the blade tip of the third shaping blade (421) is greater than the outer diameter of the blade tip of the fourth shaping blade (422).

6. The combined forming tool according to claim 1, characterized in that: First inclined cutting edges (331) are provided on both sides of the first cutting edge (33), and the cutting edges of the first inclined cutting edges (331) on both sides form an angle E.

7. A combined forming tool according to claim 6, characterized in that: The first cutting edge (31) is provided with a fifth shaping edge (311), and the tip of the first inclined cutting edge (331) forms an angle F with the fifth shaping edge (311).

8. The combined forming tool according to claim 4, characterized in that: A second inclined cutting edge (451) is provided on one side of the third cutting edge (45) close to the second cutting edge (44); the tip of the second inclined cutting edge (451) forms an angle N with the tip of the fourth shaping edge (422).

9. The combined forming tool according to claim 1, characterized in that: The third cutting edge (41) is provided with a sixth shaping edge (411), the fifth cutting edge (43) is provided with a seventh shaping edge (431), the tip of the sixth shaping edge (411) and the side cutting edge tip of the second cutting edge (44) form a side cutting edge angle, and the seventh shaping edge (431) and the side cutting edge tip of the third cutting edge (45) form a side cutting edge angle.

10. The combined forming tool according to claim 1, characterized in that: A first machining auxiliary edge (323) is provided on the side of the second cutting edge (32) away from the first cutting edge (33), and a second machining auxiliary edge (432) is provided on the side of the fifth cutting edge (43) away from the third cutting edge (45), and the angle between the first machining auxiliary edge (323) and the axis and the angle between the second machining auxiliary edge (432) and the axis are both acute angles.

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