Multifunctional arc-shaped side edge milling cutter

Abstract

The invention provides a multifunctional arc-shaped side edge milling cutter, and relates to the technical field of machining tools, the multifunctional arc-shaped side edge milling cutter comprises a cutter handle and a cutter body, the cutter handle is provided with an annular mounting groove, the groove surface of the mounting groove is fixedly sleeved with a rubber sleeve, the bottom of the cutter handle is provided with a bottom groove, and a cutter connecting rod is movably sleeved with the bottom groove; the bottom of the cutter connecting rod is fixedly connected with the cutter body, the cutter body is provided with a cooling channel, and the circular-arc-shaped side-edge milling cutter has the advantages that through the optimized cutting edge design and the reasonable structure, the feeding frequency and the residual height are reduced. Compared with a traditional ball-end milling cutter, when the milling cutter is used for machining the same aluminum alloy workpiece, the machining time is remarkably shortened, the efficiency is improved by 30%, and when the titanium alloy workpiece is machined, the efficiency is improved by about 62.5% compared with that of the traditional milling cutter. The efficiency is improved, so that the production period can be greatly shortened, the production cost is reduced, and higher economic benefits are brought to enterprises.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining tools, and more specifically, particularly relates to a circular arc side cutting edge milling cutter for multi-functional use. Background Art

[0002] In the modern machining field, as an important cutting tool, the performance and quality of a milling cutter directly affect machining efficiency, precision, and cost. With the continuous development of industrial technology, various parts with complex shapes and high-precision requirements are increasing day by day, posing higher requirements for the performance of milling cutters.

[0003] Traditional milling cutters often have some limitations when facing complex machining tasks. For example, when a common straight cutting edge milling cutter is machining a curved surface or a part with large arc features, multiple tool paths and complex programming are required, which not only increases machining time but also may result in uneven machining surface quality. In addition, due to uneven distribution of cutting forces, tool vibration is likely to occur, affecting machining precision and tool life.

[0004] In the machining of some special materials, such as high-strength alloys, high-temperature materials, etc., the wear resistance and cutting ability of traditional milling cutters are also insufficient. The rapid wear of the tool not only increases tool costs but also may lead to frequent tool changes, thus affecting production efficiency and the stability of machining quality.

[0005] In order to improve machining efficiency and precision, various new types of milling cutters have emerged in recent years. However, these milling cutters still have some problems in actual applications. For example, although some new types of milling cutters perform well under specific conditions, their applicable ranges are relatively narrow and cannot meet various machining requirements. There are also some milling cutters that are too complex in design, resulting in increased manufacturing difficulty and cost.

[0006] Under such a background, the circular arc side cutting edge milling cutter came into being. Its unique design aims to overcome the deficiencies of traditional milling cutters. By optimizing the shape and structure of the cutting edge, more efficient, precise, and stable machining can be achieved. However, there is still room for improvement in the structure and performance of existing circular arc side cutting edge milling cutters to better adapt to the increasingly complex and diverse machining requirements. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides a circular arc side cutting edge milling cutter for multi-functional use to solve the above problems.

[0008] A circular arc side cutting edge milling cutter for multi-functional use includes a tool shank and a tool body. An annular mounting groove is provided on the tool shank, and a rubber sleeve is fixedly sleeved on the groove surface of the mounting groove. A bottom groove is provided at the bottom of the tool shank, and a tool connecting rod is movably sleeved in the bottom groove. The bottom of the tool connecting rod is fixedly connected to the tool body, and a cooling channel is provided on the tool body.

[0009] Preferably, the cutting edge of the tool body is a large-diameter arc, and the radius of the arc ranges from 50 mm to 500 mm.

[0010] Preferably, the R dimension of the cutting edge of the tool on the tool body is 80 mm, the position of the R1 cutting edge is 20 mm away from the tool tip, and the tool shape is designed by comprehensively considering the above R dimension and the position of the R1 cutting edge.

[0011] Preferably, the radius of the side-edge arc of the tool body can reach more than 1500 mm according to the application situation, and a shock-absorbing spring is provided in the bottom groove.

[0012] Preferably, one end of the shock-absorbing spring is fixedly connected to the bottom surface of the bottom groove, and the other end is fixed to the tool connecting rod.

[0013] Preferably, the shape of the cooling channel is umbrella-shaped, and the distribution of the cooling channels is evenly around the tool body.

[0014] Preferably, a replaceable wear-resistant coating is provided on the side edge of the tool body, and the material of the wear-resistant coating is titanium nitride.

[0015] Preferably, wear-resistant cemented carbide inserts are also inlaid on the side edge of the tool body. The shape of the cemented carbide inserts is triangular, and the inlay method is evenly spaced inlay.

[0016] Preferably, the wear-resistant coating is a tungsten carbide coating, and the thickness of the coating is 0.5 mm.

[0017] Preferably, the spring constant of the shock-absorbing spring is between 30 N / m and 80 N / m, and the natural length of the shock-absorbing spring is 50 mm.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Improve processing efficiency: The circular-arc side-edge milling cutter of the present invention reduces the number of tool passes and the residual height through an optimized edge design and a reasonable structure. In Example 1, when machining the same aluminum alloy workpiece compared with a traditional ball-end milling cutter, the milling cutter of the present invention significantly shortens the processing time, and the efficiency is increased by up to 30%. In Experiment 1, when machining a titanium alloy workpiece, the efficiency is even increased by about 62.5% compared with the traditional milling cutter. This improvement in efficiency can greatly shorten the production cycle, reduce production costs, and bring higher economic benefits to enterprises.

[0020] 2. Improve machining accuracy: The precisely designed cutting edge parameters and stable structure enable the milling cutter of the present invention to remove materials more accurately during the cutting process. In Experiment 2, the milling cutter of the present invention has smaller dimensional deviation and higher shape accuracy after machining workpieces with specific precision requirements. In Example 2, in the face of complex machining tasks, such as the machining of stainless steel and large molds, excellent accuracy can still be guaranteed, meeting the needs of high-precision machining and improving product quality.

[0021] 3. Extend tool life: The damping spring in the bottom groove and the configuration of high-quality wear-resistant coating and carbide sheet effectively reduce the wear and impact of the tool during work. In Experiment 3, the service life of the milling cutter of the present invention is extended by about 87.5% compared with the traditional milling cutter, which greatly reduces the frequency and cost of tool replacement. In Example 2, the tool still maintains good cutting performance during long-term continuous processing and dealing with workpieces of different materials, which fully proves its excellent durability.

[0022] 4. Enhanced versatility: The radius of the arc of the side edge of the cutter body can be adjusted in a wide range, and can adapt to the processing requirements of workpieces of various shapes and sizes. Whether it is a small precision part or a large complex mold, the milling cutter of the present invention can perform excellently. In Example 2, for workpieces of different materials such as stainless steel and titanium alloy and various complex shapes, efficient and high-precision processing can be achieved, showing wide versatility and strong adaptability.

[0023] 5. Improve surface quality: The carefully designed cutting edge shape and stable cutting process make the processed surface smoother and flatter, and the roughness is significantly reduced. In Example 1, the average surface roughness of the processed aluminum alloy workpiece was reduced from 1.2Ra of the traditional milling cutter to 0.8Ra. In Experiment 4, in the processing of different materials such as cast iron, copper alloy and high-temperature alloy, the milling cutter of the present invention can obtain surface quality better than that of traditional milling cutters, improving product appearance and performance.

[0024] 6. Optimize the shock absorption effect: The shock absorption spring in the bottom groove is selected according to the carefully calculated stiffness coefficient, which can effectively absorb and buffer the vibration energy during the cutting process. It avoids the occurrence of resonance, reduces the impact of vibration on processing accuracy, and improves the stability and reliability of the tool. In Example 2, even under high-speed cutting and complex working conditions, it can maintain a stable cutting state and ensure processing quality.

[0025] 7. Significant cooling effect: The uniquely designed cooling channel can quickly remove the heat generated during the cutting process, effectively control the tool temperature, and prevent the tool from being worn out and the machining accuracy from being reduced due to overheating. In long-term continuous machining, as shown in Example 2, the tool can be kept working within a suitable temperature range, extending the tool life and improving machining efficiency and quality.

[0026] 8. Reduction of production costs: Due to the improvement of processing efficiency, the extension of tool life, and the improvement of processing accuracy and surface quality, the rejection rate and the number of reworks are reduced. At the same time, the tool change frequency and maintenance costs are decreased. Generally speaking, the milling cutter of the present invention significantly reduces the production costs during the whole production process, enhancing the market competitiveness of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the shock-absorbing spring in the present invention;

[0029] Figure 3 is a schematic diagram of the structure of the mounting groove in the present invention;

[0030] Figure 4 is a schematic diagram of the cooling channel in the present invention;

[0031] Figure 5 is a schematic diagram of the structure of the tool body in the present invention;

[0032] Figure 6 is a schematic diagram of the positions of R and R1 in the milling cutter of the present invention;

[0033] Figure 7 is a schematic diagram of the bottom structure of the tool shank in the present invention;

[0034] Figure 8 is a schematic diagram of the bottom of the rubber sleeve in the present invention;

[0035] Figure 9 is a schematic diagram of the structure of the tool shank in the present invention;

[0036] Figure 10 is a schematic diagram of the structure of the rubber sleeve in the present invention.

[0037] In the figure, the corresponding relationship between the structure names and the reference numerals is as follows: 1. Tool shank; 2. Rubber sleeve; 3. Tool body; 4. Tool connecting rod; 5. Mounting groove; 6. Bottom groove; 7. Shock-absorbing spring; 8. Cooling channel; 9. Cemented carbide insert. DETAILED DESCRIPTION OF THE INVENTION

[0038] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0039] Example 1:

[0040] In this embodiment, the cutting edge of the tool body 3 of the arc-shaped side milling cutter for multi-functional use is designed as a large-diameter arc. In actual machining, through precise design and manufacturing, the radius of the side-edge arc is controlled within a reasonable range according to specific application situations. For example, in certain specific machining tasks, the radius of the side-edge arc is set to 300 mm.

[0041] The R dimension of the tool cutting edge is carefully calculated and adjusted to be 80 mm, and the position of the R1 cutting edge is precisely located 20 mm away from the tool tip. Considering these parameters comprehensively, the shape of the tool is optimized to meet diverse machining requirements.

[0042] In actual machining operations, this arc-shaped side milling cutter is used to mill aluminum alloy materials. For comparison, a traditional ball-end milling cutter is also used for machining under the same conditions. The machining parameters are set as follows: cutting speed is 150 m / min, feed rate is 100 mm / min, and cutting depth is 5 mm.

[0043] After a period of machining, the surface roughness of the machined surface is measured. The average surface roughness of the surface machined with the arc-shaped side milling cutter is 0.8 Ra, while the average surface roughness of the surface machined with the traditional ball-end milling cutter is 1.2 Ra. It can be clearly seen that the arc-shaped side milling cutter significantly improves the surface quality while ensuring machining accuracy.

[0044] At the same time, the machining efficiency is statistically analyzed. Within the same machining time, the machining workload completed by the arc-shaped side milling cutter is 30% higher than that of the traditional ball-end milling cutter. This fully proves that due to its unique design, the arc-shaped side milling cutter reduces the number of tool passes and the residual height, shortens the machining cycle, and thus greatly improves the machining efficiency.

[0045] To more intuitively demonstrate this advantage, multiple repeated experiments are carried out. In 10 experiments, the average surface roughness of the arc-shaped side milling cutter is stable between 0.75 Ra and 0.85 Ra, while the average surface roughness of the traditional ball-end milling cutter fluctuates between 1.1 Ra and 1.3 Ra. In terms of machining efficiency, the average machining efficiency improvement of the arc-shaped side milling cutter is between 25% and 35%, fully proving its performance stability and superiority.

[0046]

[0047]

[0048] Example 2:

[0049] First, the milling cutter includes a tool shank 1 and a tool body 3. An annular mounting groove 5 is provided on the tool shank 1, and a rubber sleeve 2 is fixedly sleeved on the groove surface of the mounting groove 5. This design helps to reduce the vibration transmission from the tool shank 1 to the hand during operation, improving the comfort and stability of the operation.

[0050] A bottom groove 6 is provided at the bottom of the tool shank 1, and a tool connecting rod 4 is movably sleeved in the bottom groove 6. The bottom of the tool connecting rod 4 is fixedly connected to the tool body 3. The cutting edge of the tool body 3 is a large-diameter arc, and its radius ranges from 50 mm to 500 mm. In the machining of stainless steel workpieces, according to the shape and machining requirements of the workpiece, a tool body 3 with a cutting edge arc radius of 250 mm is selected, effectively reducing the number of tool passes and improving the machining smoothness.

[0051] The R dimension of the tool cutting edge on the tool body 3 is 80 mm, and the position of the R1 cutting edge is 20 mm away from the tool tip. Such precise design parameters enable the tool to remove materials more accurately during cutting, ensuring machining accuracy.

[0052] In some complex large mold machining tasks, the side edge arc radius of the tool body 3 can reach more than 2000 mm according to the application situation. This enables the tool to adapt to the machining requirements of large curved surfaces or special shapes, demonstrating good versatility.

[0053] A shock-absorbing spring 7 is provided in the bottom groove 6. One end of the shock-absorbing spring 7 is fixedly connected to the bottom surface of the bottom groove 6, and the other end is fixed to the tool connecting rod 4. The stiffness coefficient of the shock-absorbing spring 7 is 50 N / m, and its natural length is 50 mm. During high-speed cutting, the shock-absorbing spring 7 can effectively absorb vibration energy, reduce the vibration amplitude of the tool, thereby improving machining accuracy and the service life of the tool.

[0054] To enhance the cooling effect of the tool, a cooling channel 8 is provided on the tool body 3. The shape of the cooling channel 8 is umbrella-shaped and is evenly distributed around the tool body 3. During long-term continuous machining, by introducing coolant into the cooling channel 8, the heat generated during cutting can be quickly removed, keeping the tool working within a suitable temperature range and preventing tool wear from increasing and machining accuracy from decreasing due to overheating.

[0055] A replaceable wear-resistant coating made of titanium nitride is provided on the side edge of the tool body 3. This coating can significantly improve the wear resistance of the side edge and extend the service life of the tool. After long-term use and wear, the coating can be easily replaced to restore the good cutting performance of the tool.

[0056] In addition, wear-resistant cemented carbide inserts 9 are inlaid on the side edge of the tool body 3. The shape is triangular and they are inlaid at uniform intervals. The addition of the cemented carbide inserts 9 further enhances the wear resistance and cutting ability of the tool, making it perform excellently when machining high-strength materials.

[0057]

[0058]

[0059] In order to verify the performance advantages of the milling cutter in this embodiment, the following comparative experiments were carried out:

[0060] Experiment 1: Comparison of machining efficiency:

[0061] Prepare 50 workpieces each of the same quantity and material (such as titanium alloy), and use the arc-shaped side-edge milling cutter of the present invention and a traditional similar milling cutter for machining respectively. The machining parameters are set as: cutting speed 200 m / min, feed speed 150 mm / min, and cutting depth 8 mm.

[0062] The time required to complete the machining of all workpieces using the traditional milling cutter is 80 hours, while it only takes 50 hours to complete the same workload using the milling cutter of the present invention. It is calculated that the machining efficiency of the milling cutter of the present invention is about 62.5% higher than that of the traditional milling cutter.

[0063]

[0064]

[0065] Experiment 2: Comparison of machining accuracy:

[0066] Use the two types of milling cutters to machine workpieces with specific accuracy requirements (such as a tolerance of ±0.05 mm). Each milling cutter machines 30 workpieces. After machining is completed, use a high-precision three-coordinate measuring instrument to measure the dimensional accuracy and shape accuracy of the machined surface.

[0067] The results show that the dimensional deviation of the workpieces machined using the traditional milling cutter is within the range of ±0.08 mm, and the shape accuracy is 0.01 mm; while the dimensional deviation of the workpieces machined using the milling cutter of the present invention is within the range of ±0.03 mm, and the shape accuracy is 0.005 mm, which is significantly better than the traditional milling cutter.

[0068] Comparison items Milling cutter of the present invention Traditional milling cutter Processing material Workpiece with specific precision requirements Workpiece with specific precision requirements Dimensional deviation Within ±0.03 mm Within ±0.03 mm Form accuracy 0.005 mm 0.008 mm

[0069] Experiment 3: Comparison of tool life:

[0070] Under the same machining conditions (the same cutting speed, feed speed, and cutting depth), monitor the service life of the two types of milling cutters.

[0071] After the traditional milling cutter continuously machines 80 workpieces, obvious wear appears on the cutting edge and it can no longer meet the machining requirements; while the milling cutter of the present invention can still maintain good cutting performance after continuously machining 150 workpieces, and the tool life is extended by about 87.5%.

[0072] Through the above experimental data, it can be fully demonstrated that the arc-shaped side milling cutter for multi-functional uses of the present invention has significant advantages in terms of machining efficiency, machining accuracy, tool life, etc., can meet the requirements of various complex machining tasks, and brings higher benefits and values to the field of mechanical machining.

[0073]

[0074] In order to further verify the performance of the milling cutter of the present invention under different working conditions, the following supplementary experiments were also carried out:

[0075] Experiment 4: Machining comparison of different materials:

[0076] Common engineering materials such as cast iron, copper alloy and superalloy were selected, and the milling cutter of the present invention and the traditional milling cutter were used for machining respectively. The machining parameters were appropriately adjusted according to the material properties.

[0077] For cast iron materials, the surface roughness after machining with the traditional milling cutter is 1.5 Ra, and that of the milling cutter of the present invention is 0.6 Ra; in terms of machining efficiency, it takes 20 minutes for the traditional milling cutter to complete single-piece machining, while the milling cutter of the present invention only takes 12 minutes.

[0078] For copper alloy materials, the surface roughness after machining with the traditional milling cutter is 1.0 Ra, and that of the milling cutter of the present invention is 0.4 Ra; in terms of machining efficiency, it takes 18 minutes for the traditional milling cutter to complete single-piece machining, while the milling cutter of the present invention only takes 10 minutes.

[0079] For superalloy materials, the surface roughness after machining with the traditional milling cutter is 2.0 Ra, and that of the milling cutter of the present invention is 0.8 Ra; in terms of machining efficiency, it takes 30 minutes for the traditional milling cutter to complete single-piece machining, while the milling cutter of the present invention only takes 18 minutes.

[0080] Comparison items Milling cutter of the present invention Traditional milling cutter Processing material Cast iron Cast iron Surface roughness 0.6 Ra 1.0 Ra Processing efficiency 12 minutes per piece 18 minutes per piece

[0081] Experiment 5: Influence of different cutting parameters:

[0082] The cutting speed (from 100 m / min to 300 m / min at intervals of 50 m / min), feed speed (from 50 mm / min to 200 mm / min at intervals of 30 mm / min) and cutting depth (from 2 mm to 10 mm at intervals of 2 mm) were changed, and the machining effects of the milling cutter of the present invention and the traditional milling cutter were observed.

[0083] The results show that at higher cutting speeds and larger feed speeds, the milling cutter of the present invention can still maintain good machining accuracy and surface quality, while the traditional milling cutter shows obvious accuracy decline and surface quality deterioration. At larger cutting depths, the tool wear degree of the milling cutter of the present invention is significantly less than that of the traditional milling cutter.

[0084] Through the above series of experiments and data comparisons, it can be clearly seen that the arc-shaped side-edge milling cutter of the present invention exhibits excellent performance under various working conditions and machining conditions, providing an efficient, high-precision and durable tool solution for the machining industry.

[0085] The arc-shaped side-edge milling cutter for multi-functional use of the present invention integrates advanced design concepts and engineering mechanics principles in its working principle.

[0086] During the working process, the arc-shaped side edge of the cutter body 3 undertakes the main cutting task. Through the carefully designed arc radius and the shape of the cutting edge, the cutting force can be more evenly distributed on the cutter body 3, reducing local stress concentration, thereby improving the stability and precision of cutting.

[0087] The damping spring 7 provided in the bottom groove 6 plays a key damping role when the tool is working. When the tool is impacted by the cutting force, the tool connecting rod 4 will generate a small displacement in the bottom groove 6, compressing or stretching the damping spring 7. The damping spring 7 absorbs and buffers these impact forces through its own elastic deformation, converting the instantaneous energy into the elastic potential energy of the spring, thereby effectively reducing the vibration energy transmitted to the tool holder 1 and the machine tool.

[0088] Regarding the problem of avoiding resonance, this involves the parameter selection of the spring and the natural frequency of the system. The damping spring 7 selected in the present invention has its stiffness coefficient carefully calculated and experimentally verified. When the stiffness coefficient is between 30 N / m and 80 N / m, the natural frequency of the entire system composed of the tool connecting rod 4, the cutter body 3 and the tool holder 1 can effectively avoid the vibration frequency range that may occur during work. In this way, the occurrence of resonance can be avoided, ensuring that the tool remains stable during work and will not cause increased vibration due to resonance.

[0089] Combining two embodiments and five experiments, the numerous advantages of the present invention can be seen more clearly.

[0090] In Embodiment 1, by comparing with the traditional ball-end milling cutter, the significant advantages of the present invention in terms of surface roughness and machining efficiency are demonstrated. The design of the arc-shaped side edge reduces the number of tool passes and the residual height, which is one of the key factors for improving machining efficiency. At the same time, due to the smoother cutting process and more uniform distribution of the cutting force, the surface roughness is significantly reduced, improving the quality of the machined surface.

[0091] Example 2 further demonstrates the excellent performance of the present invention under complex working conditions. For example, when facing workpieces of different materials and shapes, the adjustable side-edge arc radius and precisely designed cutting-edge parameters enable the tool to flexibly adapt to various machining requirements. The presence of the shock-absorbing spring 7 effectively reduces the impact of vibration on machining accuracy and extends the service life of the tool.

[0092] In Experiment 1, by comparing the time required to machine the same number of workpieces, it was intuitively demonstrated that the milling cutter of the present invention has a significant improvement in machining efficiency. This not only means a shortening of the production cycle but also reduces production costs and improves production efficiency.

[0093] In Experiment 2, through the strict measurement and comparison of machining accuracy, it was clearly shown that the milling cutter of the present invention has excellent performance in terms of dimensional accuracy and shape accuracy. The high-precision machining results enable the milling cutter of the present invention to meet higher requirements for machining tasks and expand its application range.

[0094] In Experiment 3, the comparison results of tool life fully illustrate the advantages of the milling cutter of the present invention in terms of wear resistance and durability. The longer tool service life reduces the frequency of tool replacement, reducing interruptions and costs during the production process.

[0095] In Experiment 4, in the machining comparison of different materials, the milling cutter of the present invention demonstrated excellent performance in both surface roughness and machining efficiency, significantly outperforming traditional milling cutters. This indicates that the milling cutter of the present invention has wide applicability and good versatility.

[0096] In Experiment 5, through the study of changing cutting parameters, it was further verified that the milling cutter of the present invention has stability and superiority under various working conditions. At higher cutting speeds, larger feed rates, and larger cutting depths, the milling cutter of the present invention can still maintain good machining accuracy and surface quality while reducing tool wear.

[0097] In summary, the arc-shaped side-edge milling cutter for multi-functional use of the present invention, through its unique design and optimized structure, demonstrates significant advantages in machining efficiency, machining accuracy, tool life, versatility, etc. It not only provides an efficient and high-precision tool option for the field of machining but also has important significance and value for improving production efficiency, reducing costs, and enhancing product quality.

[0098] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A circular arc side edge milling cutter for multifunctional use, characterized in that: The knife comprises a knife handle (1) and a knife body (3); the knife handle (1) is provided with an annular mounting groove (5); a rubber sleeve (2) is fixedly sleeved on the groove surface of the mounting groove (5); A bottom groove (6) is provided at the bottom of the knife handle (1), a knife connecting rod (4) is movably sleeved in the bottom groove (6), and the bottom of the knife connecting rod (4) is fixedly connected to the knife body (3); The cutter body (3) is provided with a cooling channel (8).

2. A multifunctional arc-shaped side milling cutter as claimed in claim 1, characterized in that: The cutting edge of the knife body (3) is a large-diameter circular arc, and the radius of the circular arc ranges from 50 mm to 500 mm.

3. A multifunctional arc-shaped side milling cutter as claimed in claim 2, characterized in that: The R dimension of the cutting edge of the tool on the tool body (3) is 80 mm, and the position of the R1 cutting edge is 20 mm away from the tool tip.

4. A multifunctional arc-shaped side milling cutter as claimed in claim 3, characterized in that: A shock absorbing spring (7) is arranged in the bottom groove (6).

5. A multifunctional arc-shaped side milling cutter as claimed in claim 4, characterized in that: One end of the shock absorbing spring (7) is fixedly connected to the bottom surface of the bottom groove (6), and the other end is fixed to the tool connecting rod (4).

6. A multifunctional arc-shaped side milling cutter as claimed in claim 5, characterized in that: The cooling channel (8) is in an umbrella shape, and the cooling channel (8) is evenly distributed around the blade body (3).

7. A multifunctional arc-shaped side milling cutter as claimed in claim 6, characterized in that: A replaceable wear-resistant coating is provided on the side edge of the blade body (3), and the material of the wear-resistant coating is titanium nitride.

8. A multifunctional arc-shaped side milling cutter as claimed in claim 7, characterized in that: The side edges of the cutter body (3) are also inlaid with wear-resistant hard alloy sheets (9), the hard alloy sheets (9) are in the shape of a triangle, and are inlaid in a uniformly spaced manner.

9. A multifunctional arc-shaped side milling cutter as claimed in claim 7, characterized in that: The wear-resistant coating is a tungsten carbide coating, and the thickness of the coating is 0.5 mm.

10. A multifunctional arc-shaped side milling cutter as claimed in claim 5, characterized in that: The stiffness coefficient of the shock absorbing spring (7) is between 30 N / m and 80 N / m, and the natural length of the shock absorbing spring (7) is 50 mm.

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