A vibration-damping tool bar, method, and tool filled with a gradient-scale vibration-damping superstructure

Abstract

The present invention discloses a vibration-damping tool rod, method and tool filled with a gradient-scale vibration-damping superstructure, which solves the problem of high vibration-damping cost of vibration-damping tool rods in the prior art and has the beneficial effect of being able to suppress vibration during the operation of the tool rod. The specific scheme is as follows: A vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure comprises a tool rod body, the tool rod body comprises a first section and a second section connected in sequence, the interior of the second section is a hollow structure, the length of the first section is less than the length of the second section, the first section and the second section both adopt a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure comprises multiple layers of hole units from the center of the tool rod body to the outside, the aperture of the openings of each layer of hole units gradually decreases from the center of the first section or the second section to the outside, and part or all of the openings are filled with particles and / or liquids.

Description

Technical Field

[0001] The present invention relates to the field of cutting processing, in particular to a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, a method and a tool. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In cutting processing, the cutting chatter of the tool will greatly affect the cutting accuracy, especially when processing thin-walled parts or deep-hole parts, the tool vibration will greatly affect the processing quality. The vibration reduction function of the vibration-reducing tool is currently achieved through active vibration reduction, semi-active vibration reduction, passive vibration reduction and other methods. The inventors found that the active vibration reduction and semi-active vibration reduction methods are limited in promotion due to the high cost of equipment and maintenance. In addition, the passive vibration reduction method mainly adds a vibration reduction structure in the axial direction of the tool rod to achieve the vibration reduction function, but the vibration reduction structure currently added is too single and it is difficult to achieve a vibration reduction effect that can cope with various working conditions. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, which can effectively reduce the cost of vibration reduction.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure comprises a tool rod body, the tool rod body comprising a first section and a second section connected in sequence, the interior of the second section being a hollow structure, the length of the first section being smaller than that of the second section, the first section and the second section both adopting a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure comprising multiple layers of hole units from the center of the tool rod body outward, the aperture of each layer of hole units gradually decreasing from the center of the first section or the second section outward, and part or all of the holes being filled with filler.

[0007] As described above, the vibration-damping tool rod, the tool rod body adopts a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure, which has a hole unit and a gradient-scale periodic minimal surface vibration-damping lattice superstructure. Its lattice size radiates downward from the center to the surrounding areas, thereby increasing the band gap range that prevents propagation, thereby producing a wider band gap. Compared with a uniform periodic structure, the vibration suppression capability of this structure is further increased, which can well meet the vibration-damping performance requirements of the vibration-damping tool rod; the particles or liquids filled in the openings can further play a role in suppressing vibration.

[0008] In the vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure as described above, the number of openings of each layer of hole-bearing units gradually increases from the center of the first section or the second section outward, taking into account that the vibration of the tool bar body gradually increases from the inside to the outside;

[0009] The filler is powder and / or granules and / or liquid.

[0010] As described above, a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is obtained through an implicit function expression.

[0011] As described above, a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is of the primitive minimal surface type, and its implicit function is:

[0012]

[0013] Where l is the unit length of the hole unit, in mm; t is the offset parameter of the surface, dimensionless.

[0014] The vibration-damping tool bar filled with the gradient-scale vibration-damping superstructure described above, wherein the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using programming modeling or digital modeling. The generation formula of the digital modeling is as follows:

[0015] cos((0.4+0.1*(x 2 +y 2 ) 0.5 *x)+cos((0.4+0.1*(x 2 +y 2 ) 0.5 *y)+cox(z)=0.5+0.01*(x 2 +y 2 ) 0.5 ;

[0016] Variables in the formula It characterizes the surface offset parameters of the gradually varying scale vibration suppression superstructure.

[0017] As described above, a vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure, wherein a tool rod end cover is provided at one end of the second section of the tool rod body away from the first section, a convex portion is provided at one end of the tool rod end cover, the convex portion is stuck in the hollow part of the second section, and vibration-damping washers are respectively provided at both ends of the hollow part inside the second section.

[0018] In a second aspect, the present invention further provides a method for manufacturing a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, comprising the following contents:

[0019] Establish a model of a three-periodic minimal surface vibration-damping lattice superstructure with gradually varying scales;

[0020] The first and second sections of the tool bar body are 3D printed according to the established model of the gradient scale three-periodic minimal surface vibration-damping lattice superstructure;

[0021] For the printed cutter bar body, part or all of the openings are filled with particles and / or liquid.

[0022] As described above, a method for manufacturing a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure is described. The gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is a primitive minimal surface, and its implicit function is:

[0023]

[0024] Where l is the unit length of the hole unit, in mm; t is the offset parameter of the surface, dimensionless; x, y, z are the variables of the x, y, z three-axis coordinate system in the three-dimensional coordinate system.

[0025] In the third aspect, the present invention also provides a vibration-damping tool filled with a gradient-scale vibration-damping superstructure, including a vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure, wherein the first section of the tool rod body is provided with a blade mounting groove, the blade is inserted into the blade mounting groove, and a locking member connects the blade to the first section.

[0026] The vibration-damping tool filled with a gradient-scale vibration-damping superstructure as described above further includes a pressure plate, one end of which is fixedly connected to the first section of the tool bar body, and the other end of which presses on the outer side of the blade;

[0027] The first section is provided with a protruding arrangement on one side of the blade mounting slot.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1) The present invention adopts a vibration-damping tool rod through the setting of the tool rod body. The tool rod body adopts a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure. The structure has a hole unit and a gradient-scale periodic minimal surface vibration-damping lattice superstructure. The lattice size decreases radially from the center to the surrounding areas, thereby increasing the band gap range that prevents propagation, thereby generating a wider band gap. Compared with a uniform periodic structure, the vibration suppression ability of this structure is further increased, which can well meet the vibration reduction performance requirements of the vibration-damping tool rod.

[0030] 2) In the present invention, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is provided with multiple layers of perforated units, and the openings are filled with particles or liquids. In this way, during the cutting process, the vibration is transmitted to the tool rod body, and the objects filled inside can consume part of the energy through collision, friction, etc., thereby achieving damping or collision energy consumption vibration reduction. In this way, the vibration-damping lattice superstructure has a dual vibration-damping effect, so that the vibration of the tool rod during the cutting process can be greatly suppressed.

[0031] 3) The present invention prints a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure by a 3D printing method. The printing is convenient, and the processing and manufacturing of the tool rod body is convenient. The vibration-damping tool rod with different vibration-damping band gaps is manufactured by multi-layer hole units. It can be applied to different cutting conditions and has a wide range of applications.

[0032] 4) The vibration-damping tool provided by the present invention has a vibration-damping tool rod with a blade installed in a blade mounting groove, and the blade is stably set by a locking piece and a pressure plate. When the processing vibration is transmitted to the tool rod body, the gradient-scale three-periodic minimal surface vibration suppression superstructure reduces vibration through its own lattice structure, and the gradient-scale three-periodic minimal surface vibration suppression superstructure and the damping effect of the internal particles and / or liquid assume dual vibration reduction functions, thereby achieving a better vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 It is a schematic cross-sectional view of the first section of a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0035] Figure 2 1 is a top view of a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0036] Figure 3 Schematic diagram of a vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0037] Figure 4 1 is a side view of a vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0038] Figure 5 This invention Figure 4 Schematic diagram of the AA section.

[0039] Figure 6Schematic diagram of a blade in a vibration-damping tool filled with a graded-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0040] Figure 7 Schematic diagram of a tool pad in a vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0041] Figure 8 Schematic diagram of a pressure plate in a vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0042] Figure 9 Schematic diagram of a blade cover in a vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to one or more embodiments of the present invention.

[0043] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0044] Wherein: 1. Blade; 2. Pressure plate; 3. Tool holder; 4. Tool holder end cap; 5. Tool holder end cap bolt; 6. Stud; 7. Pin; 8. Tool pad; 9. Vibration-damping washer; 10. Gradient-scale three-periodic minimal surface vibration-damping lattice superstructure; 11. Powder; 12. Opening; 13. Threaded ring; 14. Tool cover. DETAILED DESCRIPTION

[0045] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0047] As introduced in the background art, the prior art has the problem of high vibration reduction cost. In order to solve the above technical problem, the present invention proposes a vibration reduction tool rod filled with a gradient scale vibration reduction superstructure.

[0048] Example 1

[0049] In a typical embodiment of the present invention, referring to Figure 1 and Figure 2As shown, a vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure includes a tool rod body 3, the tool rod body 3 includes a first section and a second section connected in sequence, the interior of the second section is a hollow structure, the length of the first section is smaller than the length of the second section, the first section and the second section both adopt a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure 10, the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure includes multiple layers of porous units from the center of the tool rod body to the outside, from the center of the first section or the second section to the outside, the aperture of the openings 12 of each layer of porous units gradually decreases, and some or all of the openings 12 are filled with fillers, which can be powder 11 and / or particles and / or liquid.

[0050] Specifically, the particles are solid particles or 3D printed alloy powders, which play a damping and vibration reduction role; the liquid is an elastic liquid.

[0051] Taking into account that the vibration of the tool rod body increases from the inside to the outside, the number of openings in each layer of hole units gradually increases from the center of the first section or the second section to the outside; for example, an opening is set in the center of the first section, 4 openings are set in the second circle of hole units, and 9 openings are set in the third circle of hole units. From the outside, each circle of hole units is set with multiple openings, and the inner diameter of the openings in each circle of hole units gradually decreases from the inside to the outside.

[0052] It needs to be explained that the gradually varying scale three-periodic minimal surface vibration-damping lattice superstructure is obtained through an implicit function expression.

[0053] The type of the gradually scaled three-periodic minimal surface vibration-damping lattice superstructure is a primitive minimal surface. The minimal surface is a surface defined and generated by a mathematical formula in three-dimensional space, and its implicit function is:

[0054]

[0055] Where l is the unit length of the hole unit, in mm; t is the surface offset parameter, dimensionless; x, y, z are the variables of the x, y, z three-axis coordinate system in the three-dimensional coordinate system;

[0056] The gradient scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using mathematics software. The generated program is as follows:

[0057] tpmsP[a_]:=Cos[ax]+Cos[ay]+Cos[z];

[0058] k2=RegionPlot3D[(-0.45-0.005Norm[{x,y}] <tpmsP[1+0.1Norm[{x,y}]]<0.45+0.005Norm[{x,y}])&&(Norm[{x,y}]<10),{x,-15,15},{y,-15,15},{z,-70,70},PlotPoints-> 180,MaxRecursion->3,PlotRange->All,Box Ratios->Automatic,Mesh->None,PerformanceGoal->"Speed"];

[0059] Alternatively, the gradient scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using a digital modeling method. The generation formula of the digital modeling is as follows:

[0060] cos((0.4+0.1*(x 2 +y 2 ) 0.5 *x)+cos((0.4+0.1*(x 2 +y 2 ) 0.5 *y)+cox(z)= 0.5 +0.01*(x 2 +y 2 ) 0.5 ;

[0061] This formula is modified from the Primitive three-periodic minimal surface generation formula, where the variables Its variant is It can be seen from the formula that as x and y increase, (x 2 +y 2 ) 0.5 It gradually increases, l gradually decreases, and l is the unit length of the hole unit, and its unit cell size gradually decreases, thus producing an effect of gradually decreasing unit cell size from the center to the surrounding area.

[0062] In the formula, 0.5+0.01*(x 2 +y 2 ) 0.5 That is, t in formula (0.1) represents the surface offset parameter of the gradient scale vibration suppression superstructure (TPMS structure), and t is converted into a function containing two dependent variables, X and Y. That is, when the surface offset parameter remains unchanged, the cell wall thickness increases with the increase of size. However, the cell size of the designed gradient scale TPMS structure decreases from the center to the periphery. Therefore, in order to ensure that the wall thickness remains relatively unchanged, (x 2 +y 2 )0.5 By making the surface offset parameter a variable, the surface offset parameter gradually changes from the center to the surrounding area along with the unit cell size, while the layer thickness remains unchanged.

[0063] In addition, a shank end cover 4 is provided at one end of the second section of the shank body away from the first section, and the shank end cover 4 is connected to the shank body 3 through a shank end cover bolt 5. A convex portion is provided at one end of the shank end cover 4, and the convex portion is inserted into the hollow part of the second section. Raised steps are respectively provided at both ends of the hollow part inside the second section, and a vibration-damping washer 9 is provided circumferentially on the raised steps. The vibration-damping washer 9 is specifically a rubber ring, and the size of the rubber ring is adapted to the inner diameter of the hollow part inside the shank body.

[0064] The vibration-damping tool rod of this embodiment has a tool rod body that adopts a gradient-scale three-periodic minimal surface vibration-damping lattice superstructure. The structure has a porous unit. The gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is specifically a gradient-scale Sheet (sheet-like) type P lattice porous structure (a sheet-like gradient-scale vibration-suppressing superstructure formed by the internal and external offset of the minimal surface). This porous structure suppresses vibration based on the Bragg scattering principle of phononic crystals (Bragg scattering principle, the principle of generating vibration-damping band gaps by scattering-type phononic crystals). When elastic waves propagate in the phononic crystals, they are affected by their internal periodic structure, and elastic waves within a certain frequency range are prevented from propagating, thereby generating a band gap. At the same time, the band gap range and width of the phononic crystal are affected by its lattice size, and the lattice size of this gradient-scale periodic minimal surface structure decreases radiatively from the center to the surrounding areas, so it can increase the band gap range that prevents propagation. The gradient-scale periodic minimal surface vibration-damping lattice superstructure has a lattice size that decreases radiatively from the center to the surrounding areas, so it can increase the band gap range that prevents propagation, thereby producing a wider band gap. Compared with the uniform periodic structure, the vibration suppression ability of this structure is further increased, which can well meet the vibration reduction performance requirements of the vibration-damping tool rod; the particles or liquid filled in the opening can further play a role in suppressing vibration.

[0065] The vibration-damping guide rod provided in this embodiment applies the three-periodic minimal surface structure in the field of mathematics to tool vibration reduction, and uses additive manufacturing technology to digitally design and manufacture the gradient-scale three-periodic minimal surface vibration-damping lattice superstructure. By controlling the parameters of the lattice superstructure, vibration-damping tool rods with different vibration-damping band gaps are manufactured, which can be applied to different cutting conditions and have a wide range of applications.

[0066] Example 2

[0067] This embodiment provides a method for manufacturing a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, including the following contents:

[0068] Establish a model of a three-periodic minimal surface vibration-damping lattice superstructure with gradually varying scales;

[0069] The first and second sections of the tool bar body are 3D printed according to the established model of the gradient scale three-periodic minimal surface vibration-damping lattice superstructure;

[0070] For the printed cutter bar body, part or all of the openings are filled with particles and / or liquid.

[0071] Specifically, the type of the gradually scaled three-periodic minimal surface vibration-damping lattice superstructure is a primitive minimal surface, and its implicit function is:

[0072]

[0073] Where l is the unit length of the hole unit, in mm; t is the offset parameter of the surface, dimensionless.

[0074] The gradient scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using mathematics software. The generated program is as follows:

[0075] tpmsP[a_]:=Cos[ax]+Cos[ay]+Cos[z];

[0076] k2=RegionPlot3D[(-0.45-0.005Norm[{x,y}] <tpmsP[1+0.1Norm[{x,y}]]<0.45+0.005Norm[{x,y}])&&(Norm[{x,y}]<10),{x,-15,15},{y,-15,15},{z,-70,70},PlotPoints-> 180,MaxRecursion->3,PlotRange->All,Box Ratios->Automatic,Mesh->None,PerformanceGoal->"Speed"];

[0077] Alternatively, the gradient scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using a digital modeling method. The generation formula of the digital modeling is as follows:

[0078] cos((0.4+0.1*(x 2 +y 2 ) 0.5 *x)+cos((0.4+0.1*(x 2 +y 2 ) 0.5 *y)+cox(z)=0.5+0.01*(x 2 +y 2 ) 0.5 .

[0079] Metal 3D printing technology is used to manufacture a three-periodic minimal surface vibration-suppressing superstructure. After fabrication, the 3D-printed powder, particles, or liquid filling the structure absorbs energy and reduces vibration. When machining vibrations are transmitted to the toolholder, the three-periodic minimal surface vibration-suppressing superstructure achieves superior vibration reduction through its own lattice structure and the damping effect of the three-periodic minimal surface vibration-suppressing superstructure and the filler inside the opening.

[0080] Example 3

[0081] This embodiment provides a vibration-damping tool filled with a gradient-scale vibration-damping superstructure. Figure 3 、 Figure 4 and Figure 5 As shown, it includes a vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure as described in Example 1, a blade mounting groove is provided in the first section of the tool rod body 3, the blade 1 is inserted into the blade mounting groove, a locking member connects the blade and the first section of the tool rod body, a tool pad 8 is provided on one side of the blade, the tool pad 8 has the same shape as the blade 1, and the tool pad 8 is located on the inner side of the blade 1.

[0082] refer to Figure 7 As shown, the center of the blade pad 8 is provided with a protrusion for clamping the blade 1, referring to Figure 6 As shown, the blade 1 has a through hole in the center, the protrusion is inserted into the through hole, the protrusion of the knife pad 8 is inserted into the through hole of the blade 1, the protrusion of the knife pad 8 is hollow, the knife cover is located on the other side of the blade 1 relative to the knife pad 8, and the pin 7 passes through the knife cover, the blade and the knife pad to connect with the knife rod body 3.

[0083] The vibration-damping tool also includes a pressure plate 2, refer to Figure 8 As shown, one end of the pressure plate 2 is fixedly connected to the first section of the arbor body 3, and the other end of the pressure plate 2 is pressed on the outside of the blade 1. Specifically, a threaded ring 13 is provided at one end of the pressure plate 2, and the threaded ring 13 is sleeved on the stud 6 provided at the first section of the arbor body. When the arbor body is horizontally arranged, the stud 6 is arranged higher than the pin 7. The inner side surface of the pressure plate is a plane, and the outer side surface of the pressure plate is an arc surface. The thickness of the side of the pressure plate 2 close to the cover plate 14 is less than the thickness of the side of the pressure plate connected to the threaded ring 13. One side of the pressure plate 2 can be pressed on the cover plate 14, and a cover plate protrusion is provided on the side of the pressure plate facing the cover plate 14.

[0084] refer to Figure 9 As shown, the cover plate 14 is square, and a through hole for the pin 7 to pass through is provided in the center of the cover plate 14 .

[0085] It can be understood that the side of the blade mounting groove provided in the first section of the shank body is protruded toward the outside of the shank body, so that the blade 1 is located at a lower front end of the shank body, which is convenient for the operation of the blade.

[0086] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, characterized in that: The tool bar body includes a first section and a second section connected in sequence, the interior of the second section is a hollow structure, the length of the first section is smaller than the length of the second section, the first section and the second section both adopt a gradient scale three-periodic minimal surface vibration-damping lattice superstructure, the gradient scale three-periodic minimal surface vibration-damping lattice superstructure includes multiple layers of hole units from the center of the tool bar body outward, the aperture of each layer of hole units gradually decreases from the center of the first section or the second section outward, and some or all of the holes are filled with fillers; The type of the gradient scale three-periodic minimal surface vibration-damping lattice superstructure is a primitive minimal surface, and its implicit function is: （0.1） Where, l is the unit length of the unit with hole, in mm; t It is the offset parameter of the surface, dimensionless, and x, y, z are the variables of the x, y, z three-axis coordinate system in the three-dimensional coordinate system.

2. The vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to claim 1, characterized in that: From the center of the first section or the second section outward, the number of openings in each layer of perforated units gradually increases; The filler is powder and / or granules and / or liquid.

3. The vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to claim 1, characterized in that: The gradient-scale three-periodic minimal surface vibration-damping lattice superstructure is obtained through an implicit function expression.

4. The vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to claim 1, characterized in that: The gradient scale three-periodic minimal surface vibration-damping lattice superstructure is modeled using programming modeling or digital modeling. The generation formula of the digital modeling is as follows: ， Variables in the formula , It characterizes the surface offset parameters of the gradually varying scale vibration suppression superstructure.

5. The vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to claim 1, characterized in that: A shank end cap is provided at one end of the second section of the shank body away from the first section, a convex portion is provided at one end of the shank end cap, the convex portion is stuck in the hollow part of the second section, and vibration-damping washers are provided at both ends of the hollow part inside the second section.

6. A method for manufacturing a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure, characterized in that: Includes the following: Establish a model of a three-periodic minimal surface vibration-damping lattice superstructure with gradually varying scales; The first and second sections of the tool bar body are 3D printed according to the established model of the gradient scale three-periodic minimal surface vibration-damping lattice superstructure; For the printed cutter bar body, part or all of the openings are filled with particles and / or liquid.

7. The method for manufacturing a vibration-damping tool bar filled with a gradient-scale vibration-damping superstructure according to claim 6, characterized in that: The type of the gradient scale three-periodic minimal surface vibration-damping lattice superstructure is a primitive minimal surface, and its implicit function is: （0.1） Where, l is the unit length of the unit with hole, in mm; t is the offset parameter of the surface, dimensionless.

8. A vibration-damping tool filled with a gradient-scale vibration-damping superstructure, characterized in that: A vibration-damping tool rod filled with a gradient-scale vibration-damping superstructure according to any one of claims 1-5, wherein the first section of the tool rod body is provided with a blade mounting groove, the blade is inserted into the blade mounting groove, and a locking member connects the blade and the first section.

9. The vibration-damping tool filled with a gradient-scale vibration-damping superstructure according to claim 8, characterized in that: It also includes a pressing plate, one end of which is fixedly connected to the first section of the knife bar body, and the other end of which is pressed against the outer side of the blade; The first section is provided with a protruding arrangement on one side of the blade mounting slot.

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