Hard alloy micro-texture turning tool suitable for MQL environment

Abstract

The hard alloy micro-texture turning tool suitable for the MQL environment comprises a front tool face, a main cutting edge and a tool assembly, the main cutting edge is fixedly arranged on the edge of the front tool face, and the tool assembly is arranged on the outer side of the front tool face. A micro oil storage groove and a micro cutting fluid conveying channel can be formed between a tool and a workpiece through the arrangement of the tool assembly, the lubricating effect is improved, friction and abrasion are reduced, and the tool assembly comprises a cutting edge near area, a micro-groove outer edge, a tool nose arc, a micro-groove, a rear-row micro-texture, a front-row micro-texture and a micro-groove inner edge; compared with a micro-groove cutter, the durability of the self-conveying micro-texture cutter is remarkably improved, and the self-conveying micro-texture cutter has the internal reasons that compared with the micro-groove cutter, a cutting fluid conveying channel is additionally arranged, the conveying power is enhanced, the cooling lubrication of the cutter is enhanced, the thermal load in the cutting process is reduced, and the service life of the self-conveying micro-texture cutter is prolonged. And the bonding wear degree and the oxidation wear degree of the cutter are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tool equipment, and in particular to a cemented carbide micro-textured turning tool suitable for an MQL environment. Background Art

[0002] my country is a major manufacturer and consumer of cutting tools. In recent years, significant achievements have been made in the technological innovation of cutting tool materials and the theory of cutting tool design methods, which have effectively promoted the technological progress of the cutting tool industry. Due to the interaction between the cutting tool and the workpiece, the cutting edge of the cutting tool is in a harsh environment of high temperature and high pressure, which seriously deteriorates the service life of the cutting tool and the surface integrity of the workpiece. Due to the many problems of traditional pouring cooling and lubrication technology, such as environmental pollution and harm to human health, the micro-lubrication technology, as a typical clean cutting technology, has been widely favored by academia and industry. Under the cutting conditions of micro-lubrication, how to smoothly enter the tool-chip contact interface has always been a serious problem that needs to be solved in the cutting field. For a long time, in order to improve the cooling and lubrication efficiency, researchers have paid more attention to new cooling methods and less attention to the design of the tool rake face. At present, the design of the micro-texture of the tool surface mostly remains in the stage of cutting design, empirical design and preset structure optimization. The design basis is insufficient, and the research on cooling and lubrication performance by studying the wettability of the rake face is not in-depth.

[0003] In the existing document 202121173203.2, no design research is carried out from the perspective of spontaneous directional transport of droplets, and there is no report on the composite design of tool structure based on the principle of spontaneous directional transport of droplets. There is a lack of design theory, an unsystematic design system, and weak innovation in design methods, which seriously restricts the high-end and precision development of the tool industry. Therefore, the present invention proposes a cemented carbide micro-textured turning tool suitable for the MQL environment to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to propose a cemented carbide micro-textured turning tool suitable for the MQL environment. Compared with the micro-groove tool, the durability of the self-conveying micro-textured turning tool suitable for the MQL environment is significantly improved. The inherent reason is that, compared with the micro-groove tool, the insertion of the self-conveying micro-texture increases the cutting fluid delivery channel, enhances the delivery power, enhances the cooling and lubrication of the tool, reduces the thermal load in the cutting process, and reduces the degree of tool adhesion wear and oxidation wear.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: a cemented carbide micro-texture turning tool suitable for MQL environment, including a front cutting edge, a main cutting edge and a tool assembly, characterized in that: the edge of the front cutting edge is fixedly provided with a main cutting edge, the front cutting edge is provided with a tool assembly, the tool assembly includes a near-domain of a cutting edge, an outer edge of a microgroove, a tool tip arc, a microgroove, a rear-row micro-texture, a front-row micro-texture and an inner edge of a microgroove, a near-domain of a cutting edge is fixedly provided on the inner side of the main cutting edge, a microgroove is opened in the near-domain of the cutting edge, a microgroove is provided on the microgroove, an outer edge of a microgroove and an inner edge of a microgroove are provided, a tool tip arc is fixedly provided on the outer side of the front cutting edge, the microgroove is provided on one side inside the front cutting edge, a rear-row micro-texture is provided on the inner edge of the microgroove, a front-row micro-texture is provided between the microgroove and the main cutting edge, and the front-row micro-texture and the rear-row micro-texture are provided in parallel with each other.

[0006] A further improvement is that the outer edge of the microgroove is arranged at the edge of the microgroove close to the main cutting edge, and the inner edge of the microgroove is arranged on the side of the outer edge of the microgroove away from the main cutting edge.

[0007] A further improvement is that a rear row of micro textures is arranged on one side of the rear end of the micro groove, and a front row of micro textures is arranged at the front end of the micro groove to form a self-conveying micro texture tool.

[0008] A further improvement is that cutting fluid delivery channels are provided inside the rear row of micro-textures and the front row of micro-textures.

[0009] A further improvement is that the edge of the front cutting edge is provided with a main cutting edge and a cutting edge arc, the side close to the main cutting edge is provided with a micro-groove outer edge, and the side away from the main cutting edge is provided with a micro-groove inner edge, and the surfaces of the micro-groove outer edge and the micro-groove inner edge are both rounded and smoothed.

[0010] A further improvement is that the shape of the micro groove is a spoon shape, and the bottom of the micro groove is an arc surface.

[0011] Further improvements are: a tool body is arranged on the inner side of the front cutting edge, the tool assembly is arranged on one side of the tool body, a central fixing hole is opened inside the tool body, a heat dissipation layer boss is fixedly arranged on the outer side of the central fixing hole, the heat dissipation layer boss is arranged on the front side of the tool body, an outer heat dissipation hole is opened on one side of the front side of the tool body, and the outer heat dissipation hole is arranged on one side of the heat dissipation layer boss.

[0012] A further improvement is that reinforcing ribs are fixedly provided at the four corners of the tool body.

[0013] A further improvement is that a protective shell is fixedly mounted on the outer side of the tool body, and the protective shell is arranged on one side of the tool assembly.

[0014] The beneficial effects of the present invention are as follows: the micro-texture shape designed by the present invention is wedge-shaped. Under the MQL environment, the main function of the rear-row micro-texture is to reduce chip obstruction, and at the same time make the MQL jet fluid form a flow beam corresponding to the front-row micro-texture, thereby enhancing the power of the cutting fluid droplets to be transported forward. The main function of the front-row micro-texture is to further transport the cutting fluid in the micro-groove to the vicinity of the cutting edge, thereby cooling and lubricating the high-temperature area, reducing the cutting force and cutting temperature, and thereby improving the tool durability. Compared with micro-groove tools, the durability of self-conveying micro-texture tools has been significantly improved. The internal reason is that, compared with micro-groove tools, the insertion of self-conveying micro-textures increases the cutting fluid delivery channel, enhances the delivery power, enhances the cooling and lubrication of the tool, reduces the thermal load during cutting, and reduces the degree of tool adhesion wear and oxidation wear, thereby effectively improving the tool durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0016] Figure 1 This is the overall picture of the micro groove tool;

[0017] Figure 2 yes Figure 1 A magnified view of the structure at M;

[0018] Figure 3 It is a schematic diagram of the structure on the AA section;

[0019] Figure 4 is an overall view of the self-transporting micro-textured tool of the present invention;

[0020] Figure 5 yes Figure 4 A partial enlarged view of

[0021] Figure 6 It is a schematic diagram of the structure on the BB section.

[0022] Figure symbols: 1. front cutting edge; 2. main cutting edge; 3. near-cutting edge; 4. outer edge of microgroove; 5. arc of tool tip; 6. microgroove; 7. rear row microtexture; 8. front row microtexture; 9. inner edge of microgroove; 10. tool body; 11. center fixing hole; 12. heat dissipation layer boss; 13. outer heat dissipation hole; 14. reinforcing rib; 15. protective shell. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms installation, connection and connection should be understood in a broad sense, for example, it 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The tool in file 202121173203.2 improves the chip breaking performance of the tool, avoids the situation where the chips scratch the machined surface of the workpiece due to entanglement, and improves the precision and quality of the machined surface of the workpiece. The heat dissipation groove and the heat dissipation table reduce the cutting temperature of the tool during cutting and reduce the contact area between the tool and the chips during the process of machining the workpiece. However, the lubricating oil consumption is large. The tool in this application can reduce the lubrication cost and the cost of waste liquid treatment due to the reduced amount of lubricating oil. The micro-textured turning tool greatly improves the quality of the machined surface, reduces the surface roughness, and improves the dimensional accuracy of the workpiece. The cemented carbide material has good wear resistance and heat resistance, and is suitable for cutting various difficult-to-machine materials.

[0026] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present embodiment provides a cemented carbide micro-textured turning tool suitable for an MQL environment, comprising a front cutting edge 1, a main cutting edge 2 and a tool assembly, wherein the edge of the front cutting edge 1 is fixedly provided with the main cutting edge 2, and the front cutting edge 1 is provided with a tool assembly, and a micro oil storage tank can be formed between the tool and the workpiece by the arrangement of the tool assembly, so as to improve the lubrication effect and reduce friction and wear, and the tool assembly comprises a cutting edge near region 3, a micro groove outer edge 4, a tool tip arc 5, a micro groove 6, a rear row of micro textures 7, a front row of micro textures 8 and a micro groove inner edge 9, a cutting edge near region 3 is fixedly provided on the inner side of the main cutting edge 2, a micro groove 6 is provided in the cutting edge near region 3, and the micro groove 6 serves as a cutting fluid storage tank, and the micro groove 6 is provided with a micro The arrangement of the groove 6 can provide continuous lubrication during the cutting process and reduce direct contact between the tool and the workpiece. The microgroove 6 is provided with a microgroove outer edge 4 and a microgroove inner edge 9. The arrangement of the microgroove outer edge 4 and the microgroove inner edge 9 increases the heat dissipation area of ​​the tool surface, which helps to dissipate the heat generated during the cutting process more quickly, thereby reducing the temperature of the cutting area. A tool tip arc 5 is fixedly arranged on the outer side of the front cutting face 1. The microgroove 6 is arranged on one side inside the front cutting face 1. The material thickness at the tool tip is increased by the arrangement of the tool tip arc 5, thereby improving the overall strength and impact resistance of the tool. A rear row of micro textures 7 is arranged on the microgroove inner edge 9. The arrangement of the rear row of micro textures 7 increases the cutting The liquid is transported to the micro groove 6 along the field, providing sufficient liquid source for lubrication near the cutting edge of the tool, enhancing the lubrication effect of the cutting fluid, and at the same time reducing the direct contact area between the tool and the workpiece, reducing the wear rate, and extending the service life of the tool. The micro texture can increase the contact area between the tool and the air, which is helpful for heat dissipation and reducing the working temperature of the tool. The rear row of micro textures 7 can improve the cutting stability of the tool, reduce vibration and noise, improve the stability of the machining process, optimize the mechanical and thermal conditions during the cutting process, and improve the overall cutting performance of the tool. A front row of micro textures 8 is arranged between the micro groove 6 and the main cutting edge 2, and the front row of micro textures 8 and the rear row of micro textures 7 are arranged parallel to each other. Through the setting of the front row of micro-textures 8, the cutting fluid in the micro-groove is further transported to the area near the tool tip and the cutting edge, so that the worst cutting area can obtain good lubrication and cooling, reducing the direct contact between the tool and the chips, thereby reducing the friction coefficient and improving the lubrication effect. By improving the lubrication performance, the micro-texture helps to reduce the cutting force during the cutting process, reduce the load on the tool, and extend the tool life. While reducing the heat generated during the cutting process, the micro-texture can also enhance the heat dissipation effect and reduce the cutting temperature, thereby improving the quality and precision of the machined surface. The design of the micro-texture can affect the formation and discharge of chips, help control the shape and length of chips, and prevent chip entanglement.

[0027] The microgroove outer edge 4 is arranged at the edge of the microgroove 6 close to the main cutting edge 2, and the microgroove inner edge 9 is arranged on the side of the microgroove outer edge away from the main cutting edge 2. The setting of the microgroove outer edge 4 and the microgroove inner edge 9 increases the heat dissipation area of ​​the tool surface, which helps to dissipate the heat generated during the cutting process more quickly, thereby reducing the temperature of the cutting area.

[0028] A tool body 10 is disposed on the inner side of the front cutting edge 1 , and a tool assembly is disposed on one side of the tool body 10 . The arrangement of the tool body 10 facilitates the use of the tool assembly.

[0029] A central fixing hole 11 is provided inside the tool body 10. The central fixing hole 11 ensures the stability and positioning accuracy of the tool during use. The central fixing hole 11 is usually coordinated with the clamping system of the machine tool so that the tool can be firmly fixed on the machine tool.

[0030] A heat dissipation layer boss 12 is fixedly arranged on the outer side of the central fixing hole 11, and the heat dissipation layer boss 12 is arranged on the front side of the tool body 10. The setting of the heat dissipation layer boss 12 increases the surface area of ​​the tool in contact with the air, which helps to improve the heat dissipation efficiency, thereby reducing the temperature during the cutting process.

[0031] The shape of the microgroove 6 is a spoon shape, the bottom of the microgroove 6 is an arc surface, the groove length L belongs to the interval of 0.70-1.50 mm, the preferred value is 1.10 mm, the groove width W belongs to the interval of 0.2-0.4 mm, the preferred value is 0.3 mm, the groove depth H belongs to the interval of 0.04-0.12 mm, the preferred value is 0.08 mm, the edge distance D belongs to the interval of 0.04-0.16 mm, the preferred value is 0.16 mm, and the schematic diagram of the relevant parameters of the microgroove 6 is shown in Figure 2 and Figure 3 When the groove length of micro groove 6 is 1.3mm, the groove width is 0.2mm, the groove depth is 0.04mm, and the edge distance is 0.04mm, when the groove length of micro groove 6 is 0.9mm, the groove width is 0.2mm, the groove depth is 0.08mm, and the edge distance is 0.16mm, when the groove length of micro groove 6 is 1.5mm, the groove width is 0.3mm, the groove depth is 0.08mm, and the edge distance is 0.1m, when the groove length of micro groove 6 is 0.7mm, the groove width is 0.3mm, the groove depth is 0.08mm, and the edge distance is 0.1mm, when the groove length of micro groove 6 is 0.9mm, the groove width is 0.2mm, the groove depth is 0.12mm, and the edge distance is 0.16mm.

[0032] A rear row of micro-textures 7 is arranged on one side of the rear end of the micro-groove 6, and a front row of micro-textures 8 is arranged at the front end of the micro-groove 6 to form a self-conveying micro-texture tool. Cutting fluid delivery channels are opened inside the rear row of micro-textures 7 and the front row of micro-textures 8. A main cutting edge 2 and a tool tip arc 5 are arranged on the edge of the front cutting surface 1. A micro-groove outer edge 4 is arranged on the side close to the main cutting edge 2, and a micro-groove inner edge 9 is arranged on the side away from the main cutting edge 2. The surfaces of the micro-groove outer edge 4 and the micro-groove inner edge 9 are both rounded and smoothed.

[0033] An outer heat dissipation hole 13 is opened on one side of the front surface of the tool body 10. The outer heat dissipation hole 13 is arranged on one side of the heat dissipation layer boss 12. The arrangement of the outer heat dissipation hole 13 facilitates auxiliary heat dissipation treatment of the tool, which is beneficial to improving the heat dissipation effect.

[0034] Reinforcement ribs 14 are fixedly disposed at the four corners of the tool body 10 , respectively. The arrangement of the reinforcement ribs 14 facilitates improving the stability of the tool body 10 .

[0035] A protective shell 15 is fixedly installed on the outer side of the tool body 10 . The protective shell 15 is arranged on one side of the tool assembly. The outer side of the tool body 10 is protected by the arrangement of the protective shell 15 .

[0036] When the carbide micro-textured turning tool suitable for the MQL environment is used, a micro oil storage groove can be formed between the tool and the workpiece through the setting of the tool assembly, so as to improve the lubrication effect, reduce friction and wear, determine the design area of ​​the micro groove and micro texture through the setting of the cutting edge near area 3, increase the heat dissipation area of ​​the tool surface through the setting of the micro groove outer edge 4, and help to dissipate the heat generated in the cutting process more quickly, thereby reducing the temperature of the cutting area, increase the material thickness at the tool tip through the setting of the tool tip arc 5, thereby improving the overall strength and impact resistance of the tool, store a trace amount of lubricating oil through the setting of the micro groove 6, help to reduce the temperature in the cutting process, reduce thermal deformation and thermal damage, reduce cutting force, make the cutting process smoother, and improve cutting efficiency through the setting of the micro groove inner edge 9. The arrangement increases the heat dissipation area of ​​the tool surface, which helps to dissipate the heat generated during the cutting process more quickly, thereby reducing the temperature of the cutting area. The arrangement of the tool body 10 facilitates the use of the tool assembly. The arrangement of the center fixing hole 11 ensures the stability and positioning accuracy of the tool during use. The center fixing hole 11 is usually coordinated with the clamping system of the machine tool so that the tool can be firmly fixed on the machine tool. The arrangement of the heat dissipation layer boss 12 increases the surface area of ​​the tool in contact with the air, which helps to improve the heat dissipation efficiency, thereby reducing the temperature during the cutting process. The arrangement of the outer heat dissipation holes 13 facilitates auxiliary heat dissipation treatment of the tool, which is beneficial to improving the heat dissipation effect. The arrangement of the reinforcing ribs 14 facilitates the improvement of the stability of the tool body 10. The arrangement of the protective shell 15 protects the outer side of the tool body 10.

[0037] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cemented carbide micro-textured turning tool suitable for an MQL environment, comprising a rake face (1), a main cutting edge (2) and a tool assembly, characterized in that: The edge of the front cutting edge (1) is fixedly provided with a main cutting edge (2); the front cutting edge (1) is provided with a tool assembly, the tool assembly comprising a cutting edge proximal region (3), a microgroove outer edge (4), a tool tip arc (5), a microgroove (6), a rear row of microtextures (7), a front row of microtextures (8) and a microgroove inner edge (9); a cutting edge proximal region (3) is fixedly provided on the inner side of the main cutting edge (2); a microgroove (6) is provided in the cutting edge proximal region (3); ), the microgroove (6) is provided with a microgroove outer edge (4) and a microgroove inner edge (9), a tool tip arc (5) is fixedly provided on the outer side of the rake face (1), the microgroove (6) is arranged on one side inside the rake face (1), a rear row of microtextures (7) is arranged on the microgroove inner edge (9), a front row of microtextures (8) is arranged between the microgroove (6) and the main cutting edge (2), and the front row of microtextures (8) and the rear row of microtextures (7) are arranged parallel to each other.

2. A cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: The microgroove outer edge (4) is arranged at the edge of the microgroove (6).

3. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: The front cutting edge (1) is provided with a cutting edge proximal region (3), the cutting edge proximal region (3) is provided with a microgroove (6), one side of the main cutting edge (2) is provided with a microgroove outer edge (4), and a gap is provided between the microgroove outer edge (4) and the main cutting edge (2).

4. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: The shape of the micro groove (6) is a spoon shape, the bottom of the micro groove (6) is an arc surface, the groove length of the micro groove (6) is 0.7-1.5 mm, the groove width is 0.2-0.4 mm, the groove depth is 0.04-0.12 mm, and the edge distance is 0.04-0.16 mm.

5. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: A rear row of micro textures (7) is arranged on one side of the rear end of the micro groove (6), and a front row of micro textures (8) is arranged at the front end of the micro groove (6) to form a self-transporting micro texture tool.

6. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: Cutting fluid delivery channels are provided inside the rear row of micro-textures (7) and the front row of micro-textures (8).

7. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: The edge of the rake face (1) is provided with a main cutting edge (2) and a blade tip arc (5); a micro-groove outer edge (4) is provided on one side of the main cutting edge (2); and a micro-groove inner edge (9) is provided on the side away from the main cutting edge (2); and the surfaces of the micro-groove outer edge (4) and the micro-groove inner edge (9) are both rounded and smoothed.

8. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 1, characterized in that: A tool body (10) is arranged on the inner side of the front cutting edge (1), the tool assembly is arranged on one side of the tool body (10), a central fixing hole (11) is opened inside the tool body (10), a heat dissipation layer boss (12) is fixedly arranged on the outer side of the central fixing hole (11), the heat dissipation layer boss (12) is arranged on the front side of the tool body (10), an outer heat dissipation hole (13) is opened on one side of the front side of the tool body (10), and the outer heat dissipation hole (13) is arranged on one side of the heat dissipation layer boss (12).

9. The cemented carbide micro-textured turning tool suitable for MQL environment according to claim 8, characterized in that: Reinforcing ribs (14) are fixedly arranged at the four corners of the tool body (10), and a protective shell (15) is fixedly installed on the outer side of the tool body (10), and the protective shell (15) is arranged on one side of the tool assembly.

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