A bionic frequency-doubling chatter cutting tool holder and cutting tool and cutting method

Abstract

The application discloses a bionic frequency-doubling chatter cutting tool handle, which comprises a clamping area and an overhanging area, and a chatter groove is arranged in the overhanging area. In the cutting process, the bionic frequency-doubling chatter cutting tool handle drives the blade to perform chatter cutting. When applied to fine machining of difficult-to-machine materials, compared with ordinary cutting, the bionic frequency-doubling chatter cutting tool handle can greatly delay the wear of the blade, prolong the service life of the blade, reduce the surface roughness of the machined workpiece, and obtain good machining surface quality. The bionic frequency-doubling chatter cutting tool handle takes the rotary motion of the machined workpiece as an excitation source, compared with the vibration cutting tool rod in the prior art, does not need an external excitation power source, and has low cost. The bionic frequency-doubling chatter cutting tool handle has a simple structure and is convenient to manufacture. The application further provides a cutting tool comprising a blade and the bionic frequency-doubling chatter cutting tool handle. The application further provides a cutting method using the cutting tool.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a biomimetic frequency doubling chatter cutting tool holder, cutting tool, and cutting method. Background Technology

[0002] With the continuous advancement of aircraft generations, their performance has improved with each generation, leading to increasingly higher operating temperatures for aero-engines. Titanium alloys and nickel-based superalloys, with their excellent high-temperature performance, high strength, creep resistance, and corrosion resistance, are widely used in the aerospace field. In aero-engines, they are extensively used in the manufacture of engine blades, turbine disks, guide vanes, and combustion chambers, accounting for approximately 50% of the engine's overall weight. However, the high strength, hardness, and low thermal conductivity of titanium alloys and superalloys make them recognized as difficult-to-machine materials. Their machining process involves high cutting forces, high cutting temperatures, and severe work hardening, resulting in rapid wear of cutting tools, short tool life, low machining efficiency, and poor surface finish.

[0003] In recent years, researchers have applied vibration cutting technology to improve the machinability of difficult-to-machine materials. This technology is a forced excitation cutting method that applies high-frequency, micron-level amplitude vibrations to the cutting tool through an external power supply and transducer. It offers advantages such as reduced cutting forces, lower cutting temperatures, increased tool life, and improved machining efficiency. However, vibration cutting requires an external excitation power supply and a specially designed vibration tool holder, resulting in a complex structure and high cost. Furthermore, it suffers from low excitation power and small vibration amplitude. These issues limit the application of vibration cutting technology in machining difficult-to-machine materials.

[0004] Self-excited vibration cutting technology is a cutting method that generates vibration amplitudes of tens of micrometers using the cutting energy of the cutting system itself. It requires no external energy supply and has advantages such as simple structure, high excitation power, and large vibration amplitude. It has been applied in areas such as generating short metal fibers in self-excited turning, self-excited chip-breaking deep hole drilling, reducing burns in self-excited grinding, and extending tool life in roughing operations. However, research on self-excited vibration finishing is currently lacking. Summary of the Invention

[0005] The purpose of this invention is to provide a biomimetic frequency doubling chatter cutting tool holder, cutting tool, and cutting method to solve the problems existing in the above-mentioned related technologies, extend tool life, and improve the cutting quality of workpieces.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a biomimetic frequency doubling chatter cutting tool holder, comprising:

[0008] A clamping area, which can be fixed to the tool post of the machine tool;

[0009] The overhanging area includes an installation section and a slotted section. The installation section has an installation surface parallel to the axis of the overhanging area, which is used to fix the blade. The end of the slotted section away from the installation section is connected to the clamping area. The slotted section has a chatter groove, which is a U-shaped groove. The opening of the chatter groove is located on the circumferential surface of the overhanging area. The bottom surface of the chatter groove is a plane and is parallel to the installation surface.

[0010] Preferably, the flutter groove is located on the side of the axial length midline of the slotted area close to the clamping area.

[0011] Preferably, the mounting surface is coplanar with the axis of the overhang area, and the opening and bottom surface of the flutter groove are located on both sides of the axis of the overhang area.

[0012] Preferably, the side of the flutter groove is perpendicular to the axis of the overhang area.

[0013] Preferably, the clamping area has a cuboid structure, and the clamping area can cooperate with the fastening screws of the tool holder to achieve fixation.

[0014] The present invention also provides a cutting tool, including an insert and the above-mentioned biomimetic frequency doubling chatter cutting tool holder. The insert is fixed to the mounting surface and can contact the workpiece. The rotational motion of the workpiece serves as an excitation source to input energy into the cutting tool, so as to realize that the overhang area drives the insert to chatter. The insert exhibits frequency doubling vibration along the cutting speed direction and the cutting depth direction while cutting the workpiece.

[0015] Preferably, the blade is detachably connected to the mounting section.

[0016] Preferably, the mounting section is equipped with an acceleration sensor to monitor the vibration of the blade.

[0017] The present invention also provides a cutting method, which utilizes the above-mentioned cutting tool, mounts the cutting tool on the tool holder of a machine tool, the machine tool drives the workpiece to rotate, the cutting blade contacts the workpiece, and the overhang area drives the cutting blade to vibrate along the cutting speed direction and the cutting depth direction.

[0018] Preferably, the vibration frequency of the blade in the cutting depth direction is twice the vibration frequency in the cutting speed direction, and the vibration trajectory of the blade is a figure-eight shape.

[0019] The present invention achieves the following technical effects compared with related technologies: The biomimetic frequency doubling chatter cutting tool holder of the present invention includes a clamping area and an overhanging area, wherein the clamping area can be fixed on the tool post of the machine tool; the overhanging area includes a mounting section and a slotted section, the mounting section has a mounting surface parallel to the axis of the overhanging area, and the mounting surface is used to fix the cutting tool; the end of the slotted section away from the mounting section is connected to the clamping area, and the slotted section has a chatter groove, which is a U-shaped groove. The opening of the chatter groove is located on the circumferential surface of the overhanging area, and the bottom surface of the chatter groove is a plane, and the bottom surface of the chatter groove is parallel to the mounting surface.

[0020] The biomimetic frequency-doubling chatter cutting tool holder of this invention features chatter grooves in the overhang area. During the cutting process, the tool holder drives the cutting insert to perform chatter cutting. When applied to the finishing of difficult-to-machine materials, compared with ordinary cutting, this invention can significantly delay insert wear, extend insert life, and reduce the surface roughness of the workpiece, resulting in excellent surface quality. Furthermore, the biomimetic frequency-doubling chatter cutting tool holder uses the rotational motion of the workpiece as the excitation source, eliminating the need for an external excitation power supply and reducing cost compared to existing vibratory cutting tool holders. Moreover, the biomimetic frequency-doubling chatter cutting tool holder of this invention has a simple structure, is easy to manufacture, and is suitable for widespread application.

[0021] This invention also provides a cutting tool, including an insert and the aforementioned biomimetic frequency-doubling chatter cutting tool holder. Furthermore, this invention provides a cutting method utilizing the aforementioned cutting tool. The cutting tool and cutting method of this invention naturally possess the aforementioned beneficial effects. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 Microscopic diagram of the katydid's whistling sound and scraper;

[0024] Figure 2 Frequency diagram of the overtone call of a katydid;

[0025] Figure 3 This is a schematic diagram of the structure of the biomimetic frequency doubling chatter cutting tool holder disclosed in the embodiments of the present invention;

[0026] Figure 4 This is a side view of the biomimetic frequency doubling chatter cutting tool holder disclosed in the embodiments of the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure along the AA direction;

[0028] Figure 6 This is a schematic diagram of the cutting tool disclosed in the embodiments of the present invention;

[0029] Figure 7 This is a schematic diagram of the machining of the cutting tool disclosed in the embodiments of the present invention;

[0030] Figure 8 This is a schematic diagram of the cutting tool's machining trajectory during the cutting process disclosed in the embodiments of the present invention;

[0031] Figure 9 The diagram shows the time-domain vibration curves of the biomimetic frequency-doubled chatter cutting tool holder in three directions as disclosed in the embodiments of the present invention.

[0032] Figure 10 This is a spectrum analysis diagram of the biomimetic frequency doubling chatter cutting tool holder in the cutting speed direction disclosed in the embodiments of the present invention;

[0033] Figure 11 This is a spectrum analysis diagram of the biomimetic frequency doubling chatter cutting tool holder in the cutting depth direction disclosed in the embodiments of the present invention;

[0034] Figure 12 This is a comparison chart of chatter cutting tool life between ordinary cutting tools and cutting tools disclosed in the embodiments of the present invention and cutting tools of this application;

[0035] Figure 13 Comparison of chatter cutting surface morphology between conventional cutting and cutting tools disclosed in the embodiments of the present invention;

[0036] Figure 14 This is a comparison diagram of the surface roughness of chatter cutting by the conventional cutting tool disclosed in the embodiments of the present invention and the cutting tool of this application.

[0037] In the image: 100, biomimetic frequency doubling chatter cutting tool holder;

[0038] 1. Clamping area; 2. Overhanging area; 3. Chatter groove; 4. Mounting surface; 5. Blade; 6. Workpiece to be machined; 7. Tool holder; 8. Fastening screw; 9. Accelerometer; 10. Vibration signal acquisition system. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The purpose of this invention is to provide a biomimetic frequency doubling chatter cutting tool holder, cutting tool, and cutting method to solve the problems existing in the above-mentioned related technologies, extend tool life, and improve the cutting quality of workpieces.

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] This embodiment provides a biomimetic frequency doubling chatter cutting tool holder 100, including a clamping area 1 and an overhanging area 2. Please refer to [reference needed]. Figures 3-5 The clamping area 1 can be fixed on the tool post 7 of the machine tool; the overhanging area 2 includes an installation section and a slotted section. The installation section has an installation surface 4 parallel to the axis of the overhanging area 2, and the installation surface 4 is used to fix the cutting tool 5; the end of the slotted section away from the installation section is connected to the clamping area 1. The slotted section has a chatter groove 3, which is a U-shaped groove. The opening of the chatter groove 3 is located on the circumferential surface of the overhanging area 2. The bottom surface of the chatter groove 3 is a plane, and the bottom surface of the chatter groove 3 is parallel to the installation surface 4.

[0044] The biomimetic frequency-doubling chatter cutting tool holder 100 of the present invention has a chatter groove 3 in the overhang area 2. During the cutting process, the biomimetic frequency-doubling chatter cutting tool holder 100 drives the cutting insert 5 to perform chatter cutting. When applied to the finishing of difficult-to-machine materials, compared with ordinary cutting, the present invention can significantly delay the wear of the cutting insert 5, extend the service life of the cutting insert 5, and reduce the surface roughness of the machined workpiece 6, thus obtaining a good machined surface quality. Moreover, the biomimetic frequency-doubling chatter cutting tool holder 100 of the present invention uses the rotational motion of the machined workpiece 6 as the excitation source. Compared with the vibration cutting tool holder in the prior art, it does not require an external excitation power supply and has a lower cost. Furthermore, the biomimetic frequency-doubling chatter cutting tool holder 100 of the present invention has a simple structure, is easy to manufacture, and is suitable for widespread application.

[0045] The biomimetic frequency doubling chatter cutting tool holder 100 of the present invention is based on the principle of biomimetic.

[0046] Katydids, commonly known as grasshoppers, produce sound using unique vocalizations on their wings and a sound-producing organ structure, as shown in Figure 1. This structure consists of two parts: a cymbal and a scraper. The scraper is cantilevered, and its key feature is the wrinkled structure on the scraper, which induces harmonic vibrations, such as... Figure 2As shown, spectral analysis revealed vibrations at two frequencies: 3500Hz and 7000Hz. The scraper vibrates and emits a chirping sound when it moves and rubs against the chirping object. This vibration is self-excited (called flutter in machining). The wrinkled structure on the scraper gives it unique vibration characteristics. The periodic separation of the scraper and chirping object during vibration effectively reduces friction and heat during the scraping process, greatly reducing scraper wear. Therefore, male katydids can rub their wings 50-60 million times throughout the summer. Based on the excellent wear reduction effect of the scraper and chirping object vibration on the katydid's wings, this invention extracts and simplifies the harmonic vibration characteristics of the wrinkled structure on the scraper. Based on the harmonic vibration characteristics of the wrinkled structure on the scraper, a biomimetic harmonic flutter cutting tool holder 100 is proposed. Figure 3 As shown, the tool holder is equated to a scraper, and stable frequency-doubled chatter is generated during the cutting process, realizing biomimetic frequency-doubled chatter to counteract the cutting roughness, such as... Figure 7 and Figure 8 As shown, the periodic high-frequency small-amplitude separation between the back face of the insert 5 and the machined surface allows the cutting fluid to be pumped into the cutting zone for cooling and lubrication. On the one hand, this significantly reduces the wear of the insert 5, extends its life, and improves machining efficiency. On the other hand, the overlapping trajectories generated by the frequency doubling reduce the roughness of the machined surface, improve the machining quality of the machined surface, and meet the requirements for the finish surface quality.

[0047] In this specific embodiment, the chatter groove 3 is located on the side of the axial length centerline of the slotted area closer to the clamping area 1. In practical applications, the position of the chatter groove 3 can be adjusted according to the actual working conditions to meet the vibration parameter requirements during the machining process, while improving the flexibility and adaptability of the bionic frequency doubling chatter cutting tool holder 100.

[0048] In this embodiment, the mounting surface 4 is coplanar with the axis of the overhanging area 2, and the opening and bottom surface of the chatter groove 3 are located on opposite sides of the axis of the overhanging area 2. In this specific embodiment, material is removed from the end of the cylindrical overhanging area 2 away from the clamping area 1 to obtain a mounting section. The mounting section has an L-shaped notch to form the mounting surface 4. The mounting surface 4 is coplanar with the axis of the overhanging area 2, and the other side of the notch is perpendicular to the axis of the overhanging area 2. The opening of the chatter groove 3 is located on the circumferential surface of the overhanging area 2 away from the mounting section, and the groove depth of the chatter groove 3 is greater than the radius of the overhanging area 2. In practical applications, the distance between the chatter groove 3 and the notch of the mounting section, as well as the groove depth of the chatter groove 3, can be adjusted according to the actual working conditions to ensure that the vibration parameters of the tool holder are within the effective vibration parameter range.

[0049] In this specific embodiment, the side of the chatter groove 3 is perpendicular to the axis of the overhang area 2, and the two sides of the chatter groove 3 are arranged in parallel, reducing the difficulty of machining. In practical applications, the angles of the two sides of the chatter groove 3 can also be adjusted according to the actual working conditions to meet different tool holder vibration parameter requirements.

[0050] It should also be explained here that there is only one chatter groove 3. This ensures the structural strength of the tool holder while allowing for frequency doubling vibration during the cutting process, thereby improving the machining reliability of the tool holder.

[0051] Specifically, the clamping area 1 has a cuboid structure and can be engaged with the fastening screw 8 of the tool holder 7 to achieve fixation, ensuring stable clamping of the tool holder and providing a strong guarantee for cutting.

[0052] In addition, it should be noted that the biomimetic frequency doubling chatter cutting tool holder 100 of the present invention can be made of materials such as stainless steel, titanium alloy, and aluminum alloy to ensure the structural strength of the tool holder and improve its adaptability.

[0053] Example 2

[0054] This embodiment provides a cutting tool, including a cutting insert 5 and a biomimetic frequency-doubled chatter cutting tool holder 100 of Embodiment 1. The cutting insert 5 is fixed to the mounting surface 4 and can contact the workpiece 6. The rotational motion of the workpiece 6 serves as an excitation source to input energy into the cutting tool, so as to realize that the overhang area 2 drives the cutting insert 5 to chatter. While cutting the workpiece 6, the cutting insert 5 has frequency-doubled vibration along the cutting speed direction and the cutting depth direction, and ensures that the vibration parameters of the tool holder are within the effective vibration parameter range.

[0055] The cutting tool of this invention can reduce the wear of the insert 5, extend the service life of the insert 5, and improve the machining quality of the machined surface, making it suitable for finishing difficult-to-machine materials. By adjusting parameters such as the slotting position and size of the chatter groove 3 and the specifications of the overhang area 2, the frequency doubling mode of the tool holder can be controlled, and the amplitude and frequency can be adjusted.

[0056] In this specific embodiment, the blade 5 is detachably connected to the mounting section, which can be done by screw connection. The connection is tight, and the disassembly and assembly are convenient, making it easy to replace and maintain the blade 5.

[0057] In practical applications, an acceleration sensor 9 can also be installed in the installation section. The acceleration sensor 9 is connected to the external vibration signal acquisition system 10 to monitor the vibration of the cutting tool 5. The vibration signal acquisition system 10 is set up to facilitate the adjustment of machining parameters based on the monitored vibration, thereby improving the automation level of cutting and further improving the machining quality of the cutting tool.

[0058] It should also be noted that when the cutting tool of the present invention is applied to difficult-to-machine materials, the workpiece 6 material includes aluminum / magnesium / copper alloys, stainless steel, titanium alloys, high-temperature alloys, high-strength steel and composite materials, which can effectively improve the machining quality of difficult-to-machine materials and extend the service life of the cutting tool.

[0059] Example 3

[0060] This embodiment provides a cutting tool, including the bionic frequency doubling chatter cutting tool holder 100 of Embodiment 1. The bionic frequency doubling chatter cutting tool holder 100 includes a cuboid clamping area 1 and a cylindrical overhanging area 2 with a chatter groove 3. The clamping area 1 has dimensions of 100x30x35mm (length, width, and height). A fastening screw 8 is placed on the top surface of the clamping area 1, and the bottom surface of the clamping area 1 is attached and fixed to the bottom surface of the tool holder 7, so that the bionic frequency doubling chatter cutting tool holder 100 is fixed on the machine tool. The tool holder is made of 6061 aluminum alloy. One end of the overhanging area 2 is fixed to the clamping area 1, while the other end is free and cantilevered. The cylindrical diameter of the overhanging area 2 is 30mm. The overhanging area 2 includes a slotted section and a mounting section. The slotted section is close to the fixed end of the overhanging area 2. The chatter groove 3 has an opening facing downwards, a width of 5mm, and a depth of 19mm. The bottom surface of the chatter groove 3 is flat. The distance between the center line of the chatter groove 3 and the front end face of the tool holder is 42.5mm. The chatter groove 3 is machined using a CNC milling cutter. After slotting, the rigidity of the tool holder is weakened, making vibration easier to excite. The mounting surface is located on the center surface of the free end of the overhanging area 2, with a width of 13mm. A groove is provided at the center of the front end of the mounting surface for mounting the insert 5. An M4 threaded hole is provided at the bottom of the groove for fixing the insert 5. This area has the function of amplifying the chatter amplitude. The key dimensions of the biomimetic frequency doubling chatter cutting tool holder 100 are the position of the slot, the size of the chatter groove 3, and the length and diameter of the overhang area 2. Changing these parameters can adjust the modal parameters of the tool holder, thereby controlling the vibration parameters such as the amplitude and frequency of the tool holder during the machining process to meet the requirements of different machining conditions.

[0061] The material of workpiece 6 is GH4169 high-temperature alloy. Cutting parameters: cutting speed 30m / min, feed rate 0.1mm / r, depth of cut 0.2mm. Insert 5 is a Sandvik RCMT 10T3 M0-SM 1105 round turning insert. Figure 6 The machining process shown involves mounting a bionic frequency-doubling chatter cutting tool holder 100 on the CNC lathe tool post 7. A three-axis accelerometer 9 is attached to the mounting surface to measure vibrations in three directions. The three-axis accelerometer 9 is manufactured by Dytran, USA, model 3133D15. The lathe is started for cutting, and vibration is measured. The measurement results are as follows: Figure 9 As shown, Figure 9 These are time-domain vibration curves in three directions. The vibrations are mainly divided into those along the cutting speed and those along the depth of cut. The vibration amplitude in the feed direction is very small and can be ignored. At the same time, the chatter frequency is also relatively stable. Figure 10 This is a spectral analysis of vibration in the tangential direction, with vibration frequencies mainly distributed around 5000Hz. Figure 11 It shows the spectral analysis of vibration in the cutting depth direction, with a vibration frequency of about 10,000 Hz, and the vibration in the two directions forms a harmonic vibration.

[0062] Then, a comparative experiment was conducted on the life and surface roughness of insert 5. A conventional cutting experiment was performed using a Sandvik toolholder (model SRDCN2525M10-A) matched with insert 5, and a chatter cutting experiment was performed using a biomimetic frequency-doubling chatter cutting toolholder 100. The life of insert 5 was compared by comparing the cutting path when the maximum flank wear of insert 5 was VBmax = 0.3 mm. Simultaneously, the surface roughness was measured during the insert 5 life experiment for comparison. A handheld microscope (Dino-Lite AM73915MZT) was used to observe the two-dimensional morphology of the machined workpiece 6 and the flank wear of insert 5, with a maximum magnification of 200x. Surface roughness was also measured using a roughness tester (Mahr M300C), with five measurements taken and the average value calculated. Figure 12 As shown, under cutting parameters of 30 m / min cutting speed, 0.1 mm / r feed rate, and 0.2 mm depth of cut, the tool life of chatter cutting is 5 times that of ordinary cutting tool 5. Although the machined surface of chatter cutting has surface textures undulating along the cutting speed direction compared to ordinary cutting, such as... Figure 13 As shown, however, the surface roughness value of the machined surface in chatter cutting is less than that in normal cutting, such as... Figure 14 As shown, this demonstrates that under these process conditions, biomimetic chatter cutting tool holders can significantly reduce insert wear, extend insert life, reduce surface roughness, and improve surface quality.

[0063] Example 4

[0064] This embodiment provides a machining tool, including the biomimetic frequency doubling chatter cutting tool holder 100 of Embodiment 1, to improve the machining quality of the machining tool.

[0065] Example 5

[0066] This embodiment provides a cutting method. Using the cutting tool of Embodiment 2, the cutting tool is installed on the tool holder 7 of the machine tool. The machine tool drives the workpiece 6 to rotate, and the blade 5 contacts the workpiece 6. The overhang area 2 drives the blade 5 to vibrate along the cutting speed direction and the cutting depth direction.

[0067] In actual machining, the workpiece material and cutting parameters are selected, the cutting tool is mounted on the machine tool holder 7, and the machine tool is started for cutting. During the cutting process, the rotation of the workpiece 6 serves as the excitation source for the chatter cutting tool holder, inputting energy into the overhanging area 2 of the chatter groove 3. The overhanging area 2 drives the insert 5 to chatter, causing the insert 5 to vibrate at double frequencies along both the cutting speed and depth of cut directions while cutting the workpiece, ensuring that the vibration parameters of the tool holder are within the effective vibration parameter range. During machining, machining parameters, including cutting speed, depth of cut, and feed rate, can also be adjusted according to machining requirements.

[0068] It should be noted that, in this specific embodiment, the vibration frequency of the blade 5 in the cutting depth direction is twice the vibration frequency in the cutting speed direction, and the vibration trajectory of the blade 5 is figure-eight shaped with intersecting trajectories, which reduces the height of chatter marks and thus reduces the surface roughness of the machined surface.

[0069] The biomimetic frequency-doubled chatter cutting tool holder 100 of this invention features a chatter groove 3 that enables stable frequency-doubled vibrations in both the cutting speed and depth of cut during machining. High-frequency, small-amplitude separation on the flank face reduces insert wear and extends insert life. The overlapping of frequency-doubled trajectories improves the surface finish, making it suitable for finishing difficult-to-machine materials. By adjusting the location and size of the chatter groove 3, as well as parameters such as the length of the overhang 2 and the diameter of the cylindrical portion, the frequency-doubled vibration mode of the tool holder can be controlled, and the amplitude and frequency adjusted.

[0070] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A cutting tool comprising a blade, characterized in that, Also included is a bionic frequency multiplication chatter cutting tool holder, comprising: a clamping region capable of being fixed to a tool holder of a machine tool; a cantilever region comprising a mounting section and a slotted section, the mounting section having a mounting surface parallel to the axis of the cantilever region, the mounting surface being used to fix a cutting insert; the slotted section being connected to the clamping region away from one end of the mounting section, the slotted section being provided with a chatter slot, the chatter slot being a U-shaped slot, the opening of the chatter slot being located on the circumferential surface of the cantilever region, the bottom surface of the chatter slot being a flat surface, and the bottom surface of the chatter slot being parallel to the mounting surface; the side surface of the chatter slot being perpendicular to the axis of the cantilever region; by adjusting the slotted position and size of the chatter slot and the specifications of the cantilever region, the frequency multiplication vibration mode of the tool holder can be controlled, and the amplitude and frequency can be adjusted; the chatter slot is located on one side of the axial length centerline of the slotted section close to the clamping region; the mounting surface is coplanar with the axis of the cantilever region, and the opening and bottom surface of the chatter slot are located on both sides of the axis of the cantilever region, respectively; the clamping region is a cuboid structure, and the clamping region can cooperate with the fastening screw of the tool holder to realize fixation; the cutting insert is fixed to the mounting surface, and the cutting insert can contact the workpiece, the rotational movement of the workpiece serves as an excitation source to input energy to the cutting tool, so that the cantilever region drives the cutting insert to chatter, and the cutting insert has frequency multiplication vibration in the cutting speed direction and the cutting depth direction while cutting the workpiece.

2. The cutting tool according to claim 1, characterized in that: the cutting insert and the mounting section are detachably connected.

3. The cutting tool according to claim 1, characterized in that: the mounting section is provided with an acceleration sensor to monitor the vibration of the cutting insert.

4. A method of cutting, characterized by: The cutting tool of any one of claims 1-3 is installed on the tool holder of a machine tool, the machine tool drives the workpiece to rotate, the cutting insert contacts the workpiece, and the cantilever region drives the cutting insert to vibrate in the cutting speed direction and the cutting depth direction.

5. The method of claim 4 wherein: The vibration frequency of the cutting insert in the cutting depth direction is twice the vibration frequency in the cutting speed direction, and the vibration trajectory of the cutting insert is an 8-shaped curve.

Images