Stable multifunctional turning tool

Abstract

The utility model discloses a stable multifunctional turning tool, which comprises a turning tool body, the upper surface and the lower surface of the turning tool body are provided with V-shaped bulge structures, each bulge comprises at least two sliding surfaces, and the sliding surfaces are used for enhancing the overall strength and the bending resistance of the turning tool and ensuring the balance in the machining process. The rear end of the turning tool is provided with a dovetail-shaped positioning structure and a positioning groove, stress is evenly dispersed through multi-area contact, and displacement and vibration caused by local stress concentration are avoided. A stress avoiding groove is formed in the front side face, stress is conducted to the rear end, and stress balance is further optimized. A stress conduction path is optimized through the dovetail structure, and stress is uniformly distributed on the whole cutter bar, so that the stress burden of the upper jaw of the cutter holder is effectively relieved, deformation or breakage of the upper jaw caused by excessive stress is avoided, and the machining stability is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a stable multifunctional turning tool. Background Art

[0002] Turning tools are widely used in machining, often used for turning, grooving, parting, and profiling. Their primary operating principle is to remove excess material and create a specific shape or size through high-speed relative motion between the tool and the workpiece. In modern machining, the strength, stability, and lifespan of turning tools are crucial to machining efficiency and quality.

[0003] In the prior art, turning tools typically use grooves on the upper and lower sides for sliding positioning to ensure stability and installation accuracy on the tool holder. However, this groove structure has exposed many problems during actual processing, resulting in turning tool performance failing to meet increasingly demanding processing requirements.

[0004] 1. Uneven force: Due to the limited force-bearing surface of the groove design, the turning tool is often subjected to local stress concentration during the processing process. Especially during high-intensity cutting or long-term continuous processing, the localized force concentration can cause the turning tool to bend and deform, thereby affecting the processing accuracy. In particular, the turning tool's bending resistance is weak during complex processing such as grooving and profiling.

[0005] 2. Unstable fixation: Existing turning tool fixation methods rely primarily on the combination of grooves and tool holders. However, this structure is prone to displacement or loosening during machining, resulting in increased vibration. Especially during high-speed cutting, vibration not only affects the surface quality of the machined part but also shortens the life of the turning tool.

[0006] 3. The positioning structure of the tool bar usually causes the upper jaw to bear greater stress. During high-frequency and high-intensity use, it is easy to deform and even has the risk of breakage.

[0007] To address these issues, the industry typically resorts to strengthening the material or increasing the groove depth. While these methods improve the strength and durability of turning tools to a certain extent, they also introduce new challenges. For example, increasing material strength can significantly increase the manufacturing cost of turning tools, and in actual applications, excessive material hardness can lead to increased brittleness and susceptibility to breakage. While deepening the groove can increase the tool's bending resistance, the deep groove structure reduces the tool's overall stability and makes precise alignment with the toolholder difficult, increasing installation complexity.

[0008] Therefore, how to improve the strength and stability of the turning tool and extend its service life has become the technical problem to be solved by the present utility model. Utility Model Content

[0009] The technical problem solved by the present invention is to provide a stable multifunctional turning tool in response to the defects in the above-mentioned prior art, so as to solve the problems of uneven force, unstable fixation and rapid wear of the turning tool proposed in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0011] A stable multifunctional turning tool comprises a turning tool body, a top long strip protrusion, a bottom long strip protrusion, a rear end rib protrusion and a positioning groove;

[0012] The turning tool body includes an upper side surface, a lower side surface, a front side surface and a rear side surface;

[0013] The upper side of the turning tool body is fixedly provided with a top long strip protrusion, the lower side of the turning tool body is fixedly provided with a bottom long strip protrusion, and the rear side of the turning tool body is fixedly provided with a rear end rib block protrusion;

[0014] The top long protrusion and the bottom long protrusion each include at least two sliding surfaces, the sliding directions of the at least two sliding surfaces of the top long protrusion and the at least two sliding surfaces of the bottom long protrusion are in the same direction, and the top long protrusion, the bottom long protrusion, the rear end rib protrusion and the turning tool body are an integrated structure;

[0015] The combination of the top long strip protrusion, the bottom long strip protrusion, the rear end rib block protrusion and the turning tool body of the integrated structure forms a stable turning tool body, and the rear end of the stable turning tool body is provided with a positioning groove.

[0016] As a further solution of the present invention, the stable turning tool body includes an upper side, a lower side and a rear side. The rear end rib protrusion refers to the width of the rear side of the stable turning tool body and close to the upper side of the stable turning tool body being smaller than the width of the rear side of the stable turning tool body and close to the rear side of the stable turning tool body, so that the rear side of the stable turning tool body forms a dovetail protrusion.

[0017] As a further solution of the present invention, a portion of uniform width is provided on the rear side surface of the stable turning tool body and close to the upper side surface of the stable turning tool body, and the height of the portion of uniform width is at least one-fifth of the overall height of the stable turning tool body; and the height portion of the stable turning tool body on the rear side surface except for at least one-fifth of the height portion is the portion that forms the dovetail protrusion.

[0018] As a further solution of the present invention, the stable multifunctional turning tool further includes a force avoidance groove, and the force avoidance groove is provided on the front side surface of the stable multifunctional turning tool.

[0019] As a further solution of the present invention, the positioning groove includes a positioning extension notch, and the force avoidance groove includes an extension avoidance notch. The notch direction of the positioning extension notch of the positioning groove faces upward, and the notch direction of the extension avoidance notch of the force avoidance groove faces downward.

[0020] As a further solution of the present invention, the end cross-section shapes of the top long strip protrusion and the bottom long strip protrusion are respectively triangular.

[0021] As a further solution of the present invention, the front and rear ends of the stable turning tool body are horizontally flipped 180 degrees with the axial center of the stable turning tool body as the center, and the front and rear ends are symmetrical.

[0022] As a further solution of the present invention, each corner of the stable turning tool body is provided with an arc transition.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The V-shaped protrusion and the sliding surface design synergistically enhance the strength and balance of the turning tool: The upper and lower sides of the traditional turning tool structure usually adopt a groove design for sliding positioning. This groove easily causes uneven force on the tool during processing, reducing the bending resistance and overall strength of the turning tool. The utility model forms a V-shaped protrusion structure by providing a top long protrusion and a bottom long protrusion on the upper and lower sides of the turning tool body, respectively, and each protrusion includes at least two sliding surfaces, and the sliding directions of the sliding surfaces are the same. The synergistic effect between the protrusion and the sliding surface not only replaces the traditional groove design, enhances the overall strength and bending resistance of the turning tool, but also ensures the balance of the turning tool during processing. This design effectively solves the technical problem of the turning tool being easily deformed and worn during high-intensity cutting, and significantly extends the service life of the tool.

[0025] 2. The precise coordination of the positioning groove and the dovetail-shaped positioning structure realizes force dispersion: The utility model provides a rear end rib protrusion on the rear side of the turning tool body to form a dovetail-shaped positioning structure, and at the same time provides a positioning groove at the rear end. The positioning extension notch of the positioning groove is directed upward, corresponding to the downward direction of the extension avoidance notch of the force avoidance groove. During the machining process, the force avoidance groove transmits the force at the front end to the positioning groove at the rear end. The positioning groove and the positioning components of the tool holder are in contact with each other over multiple areas, which evenly disperses the transmitted force to a wider area. The coordinated cooperation between the various components effectively avoids the tool displacement and vibration caused by local force concentration, and improves the machining stability and cutting accuracy of the turning tool.

[0026] 3. The synergistic effect of the force avoidance groove and the positioning groove optimizes force transmission: A force avoidance groove is set on the front side of the turning tool, and the extended avoidance notch is directed downward, which reduces the force area of direct contact between the tool and the workpiece and reduces the stress concentration at the front end. The force is guided to the positioning groove at the rear end through the force avoidance groove. The positioning extension notch of the positioning groove is directed upward, and the multi-area contact with the positioning component further disperses the force. The synergistic effect of the front and rear components forms an optimized force transmission mechanism, ensuring the force balance of the tool during the processing, reducing the deformation or damage of the tool caused by excessive local stress, and improving the processing stability and durability of the tool; in addition, the dovetail structure of the positioning groove further optimizes the force transmission path, so that the force is evenly distributed on the entire tool bar, thereby effectively reducing the stress burden on the upper jaw of the tool holder, avoiding deformation or fracture of the upper jaw due to excessive force, and further enhancing the processing stability.

[0027] 4. Multiple components collaborate to achieve efficient and stable multi-scenario processing: The top and bottom long strips, rear rib protrusions, positioning grooves, and force avoidance grooves, through close coordination in structural design, jointly achieve efficient and stable performance of the turning tool in various processing scenarios such as grooving, parting, and profiling. The V-shaped protrusion structure improves the turning tool's strength and bending resistance. The synergistic effect of the force avoidance groove and positioning groove optimizes force transmission and dispersion. The dovetail positioning structure ensures the tool's installation stability. The interaction between these various components enables the turning tool to maintain excellent performance under different processing conditions, significantly improving processing efficiency and product quality.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is a structural diagram of the turning tool body of the utility model when it is a grooving and cutting tool.

[0031] Figure 2 for Figure 1 Schematic side projection of .

[0032] Figure 3 for Figure 1 Schematic diagram of the structure at the bottom.

[0033] Figure 4 This is a structural diagram of the tool holder when the tool body and the tool holder are assembled together and a corresponding positioning groove is set on the tool holder.

[0034] Figure 5 It is a structural diagram of the hub cutter.

[0035] Figure 6 This is a structural schematic diagram of the utility model when the force path is optimized through the dovetail positioning structure.

[0036] Figure 7 for Figure 6 A magnified schematic diagram of part A.

[0037] The reference numerals and names in the figures are as follows:

[0038] The turning tool body 1, the top long strip protrusion 2, the bottom long strip protrusion 3, the rear end rib block protrusion 4, the positioning groove 5, the force avoidance groove 6, the tool seat 7, the positioning slide groove 8, the pin shaft 9, the bolt 10 and the limit protrusion 11. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1 —7. In an embodiment of the present utility model, a stable multifunctional turning tool comprises a turning tool body 1, which further comprises a top elongated protrusion 2, a bottom elongated protrusion 3, a rear end rib protrusion 4, and a positioning groove 5; the turning tool body 1 comprises an upper side, a lower side, a front side, and a rear side; the top elongated protrusion 2 is fixedly provided on the upper side of the turning tool body 1, the bottom elongated protrusion 3 is fixedly provided on the lower side of the turning tool body 1, and the rear end rib protrusion 4 is fixedly provided on the rear side of the turning tool body 1;

[0041] The top elongated protrusion 2 and the bottom elongated protrusion 3 each include at least two sliding surfaces, the sliding directions of the at least two sliding surfaces of the top elongated protrusion 2 and the at least two sliding surfaces of the bottom elongated protrusion 3 are in the same direction, and the top elongated protrusion 2, the bottom elongated protrusion 3, the rear end rib protrusion 4 and the turning tool body 1 are an integrated structure;

[0042] The integrated top and bottom strips 3, rear ribs 4, and tool body 1 form a stable tool body. A positioning groove 5 is provided at the rear end of the stable tool body. The stable tool body comprises an upper side, a lower side, and a rear side. The rear ribs 4 are smaller in width on the rear side of the stable tool body near the upper side than on the rear side near the rear side, forming a dovetail protrusion on the rear side of the stable tool body.

[0043] A portion of uniform width is provided on the rear side surface of the stable turning tool body and close to the upper side surface of the stable turning tool body, and the height of the portion of uniform width is at least one-fifth of the overall height of the stable turning tool body; and the height portion of the stable turning tool body on the rear side surface except for at least one-fifth of the height portion is the portion forming the dovetail protrusion.

[0044] The stable multifunctional turning tool also includes a force relief groove 6, located on the front side of the tool. The positioning groove 5 includes an extended positioning notch, while the force relief groove 6 includes an extended relief notch. The positioning notch of the positioning groove 5 faces upward, while the extended relief notch of the force relief groove 6 faces downward. The top and bottom elongated protrusions 2 and 3 each have a triangular cross-section.

[0045] After the front and rear ends of the stable turning tool body are horizontally flipped 180 degrees with the rear end centered on the axial center of the stable turning tool body, the front and rear ends are symmetrical. At the same time, the horizontal flip mentioned here is a hypothetical flip, which is only used to illustrate their mutual correspondence or corresponding setting methods. In this case, the front and rear ends of the stable turning tool body respectively have a rear end rib protrusion 4, a positioning groove 5, and a force avoidance groove 6. The specific functional allocation of these structures, that is, which is the positioning groove 5 and which is the force avoidance groove 6, depends on the direction in which the turning tool is installed. When the turning tool body is flipped horizontally, the original front end becomes the rear end, and vice versa. This design belongs to an extended implementation method that can be understood and implemented by ordinary technicians in this field. Arc transitions are set for each corner of the stable turning tool body.

[0046] A method for processing a stable multifunctional turning tool comprises the following steps:

[0047] Step 1: Forming V-shaped protrusions on the upper and lower surfaces of the turning tool body 1. The V-shaped protrusions include at least two sliding surfaces that slide in the same direction, thereby enhancing the overall strength of the turning tool, increasing the tool volume, and ensuring the balance and bending resistance of the turning tool during machining.

[0048] Step 2: forming a dovetail shaped positioning structure at the rear end of the turning tool body, which is used to evenly transmit the force to the entire turning tool to reduce the force burden on the upper jaw of the tool holder and avoid deformation or breakage due to excessive stress on the upper jaw.

[0049] A method for processing a stable multifunctional turning tool further includes the following steps:

[0050] A force avoidance groove 6 is provided on the front side of the turning tool. The extending avoidance notch of the force avoidance groove 6 faces downward, which is used to reduce the direct force area when the turning tool contacts the workpiece, reduce local stress concentration, and guide the force during machining to the positioning groove 5 at the rear end of the turning tool to prevent the force from being concentrated at the front end, thereby shortening the tool life.

[0051] A positioning groove 5 is provided at the rear end of the turning tool, and the positioning extension notch of the positioning groove 5 is directed upward, and the force transmitted by the force avoidance groove 6 acts on the positioning groove 5. Through the multi-area contact between the positioning groove 5 and the positioning component, the force is evenly dispersed to a larger range, ensuring the force balance of the turning tool during the processing, reducing the displacement and vibration caused by local stress, and thus improving the cutting accuracy and stability of the turning tool; at the same time, the dovetail structure of the positioning groove 5 can further optimize the force path, reduce the stress concentration on the upper jaw of the tool holder, effectively avoid the deformation and fracture of the upper jaw during processing, and ensure the stability and tool life during processing; a limiting protrusion 11 is provided on the tool holder 7 to cooperate with the dovetail structure for easy positioning, which are all extended implementation methods known to ordinary gold wire personnel in this field.

[0052] The front and rear ends of the turning tool are centered on the axial center of the turning tool body 1, and the rear end is horizontally flipped 180 degrees and then symmetrically arranged, so that the turning tool can continue to be used by flipping after the front end is worn, thereby ensuring the continuous stability of the tool during processing; the turning tool is used for grooving, cutting and profiling. The V-shaped protrusion and the dovetail-shaped positioning structure work together in various types of processing. Through the design of the force avoidance groove 6 and the positioning groove 5, the force in the processing is effectively transmitted and dispersed, reducing local stress concentration, ensuring efficient cutting processing and maintaining the balance and durability of the tool.

[0053] like Figure 4 As shown, when the turning tool body 1 is installed, those skilled in the art will understand and know that the structure on the tool holder 7 for supporting the turning tool body 1 only needs to be designed accordingly for the top long protrusion 2 and the bottom long protrusion 3 of the turning tool body. Specifically, it is only necessary to provide a positioning groove 8 on the tool holder 7 to cooperate with the top long protrusion 2 and the bottom long protrusion 3 of the turning tool body, and to slide to the position of the positioning locking band of the conventional pin shaft 9 and / or bolt 10 to securely connect with the tool holder 7. These are all extended implementation methods that can be easily implemented by those skilled in the art using conventional technical means.

[0054] Example 1:

[0055] The present invention provides a stable multifunctional turning tool, which is particularly suitable for various processing scenarios such as turning, grooving, cutting and profiling. The following describes the implementation of the present invention and its significant technical effects through specific application scenarios.

[0056] In actual industrial production, the turning process often involves high-intensity and high-precision cutting, especially when processing complex curved surfaces, grooves or separating (cutting) materials, which requires extremely high strength and stability of the turning tool. However, due to the limitations of the structural design, existing turning tools usually use grooves designed on the upper and lower sides for sliding positioning. This structure often causes the turning tool to bend and deform due to uneven force during high-speed processing, affecting the processing accuracy. In addition, the traditional fixing method of the turning tool relies on the combination of the groove and the tool holder. This design is prone to vibration and displacement during high-speed cutting, seriously affecting the processing effect. In addition, the dovetail structure of the positioning groove further optimizes the force conduction path, so that the force is evenly distributed on the entire tool rod, thereby effectively reducing the stress burden on the upper jaw of the tool holder, avoiding deformation or breakage of the upper jaw due to excessive force, and further enhancing the stability of the processing.

[0057] To solve the above problems, this embodiment greatly improves the stability and strength of the turning tool in actual processing by introducing a combination of a V-shaped protrusion structure, a sliding surface design, a dovetail positioning structure and a force avoidance groove 6.

[0058] In actual applications, the workpiece material is high-hardness alloy steel, and common processing scenarios are grooving and profiling. In traditional turning tools, due to the high hardness of the workpiece material and the large cutting force, the local force on the turning tool often causes rapid wear of the tool, and the processing quality cannot be guaranteed. The utility model forms a V-shaped protrusion structure by providing a top long protrusion 2 and a bottom long protrusion 3 on the upper surface and the lower surface of the turning tool respectively, and the protrusion includes at least two sliding surfaces, and the sliding surfaces are in the same direction. This design ensures that the turning tool is subjected to uniform force during the processing process, significantly enhances the tool's anti-bending ability, and prevents the turning tool from bending and deforming during cutting.

[0059] For example, during grooving, when the turning tool contacts the workpiece, the V-shaped protrusion and sliding surface structure can effectively balance the force on the turning tool and reduce tool wear caused by uneven force. At the same time, when processing high-hardness materials, the force avoidance groove 6 on the front side of the turning tool guides the stress at the front end of the turning tool to the positioning groove 5 at the rear end through an extended avoidance notch design. The multi-area contact between the positioning groove 5 and the positioning component of the tool holder 7 not only further disperses the force and avoids excessive concentration of local stress, but also ensures that the turning tool will not loosen or shift during high-speed cutting through the dovetail structure. This multi-component synergistic design not only solves the failure problem of traditional turning tools caused by concentrated force, but also realizes the uniform distribution of force on the entire tool bar through the dovetail force conduction path, thereby effectively reducing the stress burden on the upper jaw of the tool holder and avoiding deformation or breakage of the upper jaw due to excessive force.

[0060] Example 2:

[0061] This example demonstrates the application of this utility model in actual machining scenarios and its significant advantages. Compared with traditional blade designs, this utility model significantly improves the blade's strength and machining stability through its innovative V-shaped protrusion structure, V-shaped end face positioning, and dovetail design. It is particularly suitable for complex machining scenarios such as grooving, parting, and profiling.

[0062] While traditional grooves on the upper and lower surfaces of the insert provide a certain degree of sliding positioning, their concave structure limits the insert's size and strength, making it susceptible to bending and deformation during high-intensity cutting. This is especially true during grooving or profiling, where the tool is subjected to high cutting forces. Traditional grooved inserts lack the necessary bending resistance to meet the high-precision, high-efficiency machining requirements.

[0063] To address these issues, the present invention employs upper and lower V-shaped protrusions, increasing the blade's volume and significantly improving its overall strength. By providing V-shaped protrusions on both the upper and lower surfaces of the blade, the sliding surfaces within the V-shaped protrusions effectively balance the forces acting on the blade during machining, preventing bending or deformation during high-intensity cutting. Furthermore, the protrusions and the sliding surface design work together to provide a more stable sliding positioning function, ensuring the blade's precise positioning on the toolholder and preventing positional shifts caused by force fluctuations during high-speed machining.

[0064] For example, when grooving, the upper and lower V-shaped protrusions of the blade enable it to withstand greater cutting forces while maintaining uniform force. The force at the front end of the blade is transmitted to the dovetail-shaped positioning structure at the rear end of the blade through the V-shaped protrusion. The multi-area contact of the positioning structure further disperses the cutting force, effectively preventing tool wear or deformation caused by excessive local force. Through the synergistic effect of the end face V-shaped positioning and the dovetail design, the connection between the blade and the tool holder is more stable, avoiding the phenomenon of loosening or offsetting the blade during processing, ensuring high efficiency and high precision of processing; the dovetail force transmission path is used to evenly distribute the force on the entire tool shank, thereby effectively reducing the stress burden on the upper jaw of the tool holder and avoiding deformation or breakage of the upper jaw due to excessive force.

[0065] In profiling, the complex geometry of the workpiece places higher demands on the tool's stability and precision. Traditional groove-designed blades are prone to slight displacement when machining complex curved surfaces due to uneven force distribution, affecting the final machining result. The V-shaped protrusion and dovetail-shaped positioning structure of the present invention not only effectively enhances the blade's bending resistance, but also ensures that the blade maintains a stable cutting state during high-speed, complex machining through its precise positioning design. Especially during machining, because the dovetail-shaped positioning structure can stably disperse the cutting force, the blade will not shift or vibrate during high-intensity machining, ensuring that machining accuracy is maintained.

[0066] Overall, the utility model's upper and lower V-shaped protrusions significantly increase blade strength by increasing blade volume. The combination of a dovetail-shaped positioning structure and the V-shaped positioning design provides a more stable tool fixation, ensuring machining accuracy and stability in high-intensity cutting scenarios. Through the synergistic effect of the upper and lower V-shaped protrusions and dovetail positioning, the blade demonstrates significant technical advantages in a variety of complex machining scenarios, such as grooving, parting, and profiling, achieving high-efficiency, high-precision machining results that are difficult to achieve with existing technologies.

[0067] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A stable multifunctional turning tool, comprising a turning tool body, characterized in that: The stable multifunctional turning tool also includes a top long strip protrusion, a bottom long strip protrusion, a rear end rib protrusion and a positioning groove; The turning tool body includes an upper side surface, a lower side surface, a front side surface and a rear side surface; The upper side of the turning tool body is fixedly provided with a top long strip protrusion, the lower side of the turning tool body is fixedly provided with a bottom long strip protrusion, and the rear side of the turning tool body is fixedly provided with a rear end rib block protrusion; The top long protrusion and the bottom long protrusion each include at least two sliding surfaces, the sliding directions of the at least two sliding surfaces of the top long protrusion and the at least two sliding surfaces of the bottom long protrusion are in the same direction, and the top long protrusion, the bottom long protrusion, the rear end rib protrusion and the turning tool body are an integrated structure; The combination of the top long strip protrusion, the bottom long strip protrusion, the rear end rib block protrusion and the turning tool body of the integrated structure forms a stable turning tool body, and the rear end of the stable turning tool body is provided with a positioning groove.

2. A stable multifunctional turning tool according to claim 1, characterized in that: The stable turning tool body includes an upper side, a lower side and a rear side. The rear end rib protrusion means that the width of the rear side of the stable turning tool body and close to the upper side of the stable turning tool body is smaller than the width of the rear side of the stable turning tool body and close to the rear side of the stable turning tool body, so that the rear side of the stable turning tool body forms a dovetail protrusion.

3. A stable multifunctional turning tool according to claim 2, characterized in that: A portion of uniform width is provided on the rear side surface of the stable turning tool body and close to the upper side surface of the stable turning tool body, and the height of the portion of uniform width is at least one-fifth of the overall height of the stable turning tool body; and the height portion of the stable turning tool body on the rear side surface except for at least one-fifth of the height portion is the portion forming the dovetail protrusion.

4. The stable multifunctional turning tool according to claim 1, characterized in that: The stable multifunctional turning tool further comprises a force avoidance groove, and the force avoidance groove is arranged on the front side of the stable multifunctional turning tool.

5. The stable multifunctional turning tool according to claim 4, characterized in that: The positioning groove includes a positioning extension notch, and the force avoidance groove includes an extension avoidance notch. The notch direction of the positioning extension notch of the positioning groove faces upward, and the notch direction of the extension avoidance notch of the force avoidance groove faces downward.

6. The stable multifunctional turning tool according to claim 4, characterized in that: The end cross-section shapes of the top long strip protrusion and the bottom long strip protrusion are respectively triangular.

7. The stable multifunctional turning tool according to claim 1, characterized in that: The front end and the rear end of the stable turning tool body are horizontally flipped 180 degrees with the axial center of the stable turning tool body as the center, and the front end and the rear end are symmetrical.

8. The stable multifunctional turning tool according to claim 1, characterized in that: Each corner of the stable turning tool body is provided with an arc transition.

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