CN104175169A - Inelastic collision and rolling viscous resistance particle coupling energy consumption numerical control machine tool - Google Patents

Abstract

Inelastic collision and rolling viscous resistance particle coupling energy-dissipative CNC machine tools, related to CNC machine tools. It is equipped with a CNC machine tool bed, columns, beams, top beams, reinforcing beams, rams, electric spindles, and workbenches; at least 2 layers of coupling energy-dissipating plates are installed in at least one structural part of the CNC machine tool, and the structural parts Including at least one of the CNC machine bed, CNC machine column, CNC machine beam, CNC machine top beam, CNC machine reinforcement beam, CNC machine ram, etc., a groove array is provided on the coupling energy-dissipating plate, and the groove Place at least 2 high surface viscous resistance polymer particles in each groove of the array, and place 1 surface low restitution coefficient particle in each groove. When the machine tool is cutting at high speed, the coupling energy dissipation plate can quickly dissipate the unidirectional and multidirectional vibration energy generated by the cutting force step by step, with high energy consumption factor and obvious vibration suppression effect, effectively improving the stability and machining accuracy of the machine tool.

Description

Particle coupling of inelastic collision and rolling viscous resistance to energy-dissipating CNC machine tools

technical field

The invention relates to a numerically controlled machine tool, in particular to an energy-consuming numerically controlled machine tool coupled with inelastic collision and rolling viscous resistance particles.

Background technique

At present, the development trend of CNC machine tools is high speed, high precision and high efficiency. However, high speed and heavy cutting will cause the stability of the machine bed to decrease and affect the machining accuracy of the workpiece.

Common methods used abroad to improve the stability of machine tools (H wang C, Jack C H, Wu T S, et al. Framework for integrated mechanical design automation [J]. Computer Aided Design, 2000; 32(5): 355-365) In order to carry out static and dynamic calculations on the various parts of the machine tool through finite element methods, and optimize the arrangement of the ribs and structural support of the various structural parts of the machine tool, the disadvantages are that the process calculation is difficult and the manufacturing cycle is long. A common method to improve the stability of machine tools in China (Chen Chao, several problems in the foundation design of large-scale gantry milling machines, Science and Technology Innovation Herald, 2011, 4:73-74) is to increase the wall thickness of the machine tool structure, and the disadvantage is that it increases the use of metal materials and manufacturing cost.

With the improvement of speed and processing efficiency, the control of the stability of CNC machine tools is a very important link. Increasing the energy consumption mechanism of each structural part of the machine tool plays an important role in improving the stability of the CNC machine tool.

Contents of the invention

The object of the present invention is to provide an energy-consuming numerical control machine tool coupled with inelastic collision and rolling viscous resistance particles.

The invention is provided with a CNC machine tool bed, a CNC machine tool column, a CNC machine tool beam, a CNC machine tool top beam, a CNC machine tool reinforcing beam, a CNC machine tool ram, a CNC machine tool electric spindle, and a CNC machine tool workbench;

There are at least 2 layers of coupling energy-dissipating plates in the CNC machine bed, CNC machine column, CNC machine beam, CNC machine top beam, CNC machine reinforcement beam, and CNC machine ram, and grooves are provided on the coupling energy-dissipating plate array, placing at least 2 high surface viscous resistance polymer particles in each groove of the groove array, and placing 1 surface low restitution coefficient particle in each groove.

The groove array can be set as an m×n groove array, m is the number of particle grooves in the length direction of the coupling energy dissipation plate, and n is the number of particle grooves in the width direction of the coupling energy dissipation plate.

Thousands of high surface viscous resistance polymer particles can be placed in each groove.

The polymer particles with high surface viscous resistance can be interpenetrating network polymers. The interpenetrating network polymers are a combination of forced mutual compatibility and synergistic effects produced by cross-penetration and mechanical entanglement between double networks. The methyl phenyl polysiloxane and acrylate interpenetrating polymer polymer material with good performance are interpenetrating network polymers, and the particle diameter of the polymer particles with high surface viscosity resistance can be 0.1-0.3mm.

The surface low recovery coefficient particles can be coated with methylphenylpolysiloxane and acrylate interpenetrating network polymer on the outside of the metal particles. The density of the metal particles can be 7.0-18.3g/cm ³ , and the particle size of the metal particles The diameter can be 2-10 mm, and the thickness of the coated methylphenyl polysiloxane and acrylate interpenetrating network polymer can be 0.2-0.5 mm.

The coupling energy-dissipating plate is a metal plate with m×n groove arrays on its surface.

The groove diameter _d1 of the coupling energy-dissipating plate can be 0.92-0.94d, d is the diameter of the surface low recovery coefficient particles, the groove depth _h1 can be 0.21-0.23d, and the high surface viscosity particles filled in the groove The depth _h2 between the hysteresis polymer particles and the surface of the coupling energy dissipation plate may be 0.079-0.081d.

During the cutting process of CNC machine tools, the cutting force of the spindle will cause the vibration of the structural parts of the machine tool. When the structural parts transmit the vibration to the coupling energy dissipation plate, the particles with low restitution coefficient on the inner surface of the coupling energy dissipation plate groove stick to the high surface Rolling in the resistance polymer particles, the viscous resistance in this process dissipates 20% to 40% of the kinetic energy. The greater the vibration displacement of the structure, the more energy is dissipated by the viscous resistance. When the energy transmitted by the structural parts of the machine tool is not large, the kinetic energy can be dissipated by relying on the viscous resistance generated by the particles with low restitution coefficient on the surface rolling on the polymer particles with high surface viscous resistance; when the vibration energy is greater than the viscous resistance dissipation When the energy is high, the adjacent particles with low restitution coefficient on the surface of the coupling energy-dissipating plate collide inelastically with high collision frequency and low restitution coefficient, and the kinetic energy of the coupling energy-dissipating plate is quickly dissipated step by step through 7 to 12 particles with low surface restitution coefficient. scattered. A necessary gap δ is reserved between the particles with low restitution coefficient on the adjacent surface, and the position arrangement of the particles with low restitution coefficient on the surface is calculated by discrete element calculation. Since the multi-layer coupling energy-dissipating plate is set on the structure of the CNC machine tool, the inelastic collision and rolling viscous resistance of the surface low restitution coefficient particles and the high surface viscous resistance polymer particles are carried out at high frequency on each layer of the coupling energy-dissipating plate Coupling energy consumption, so that the vibration generated by the cutting of the machine tool spindle is quickly suppressed by the added multi-layer energy dissipation board, the energy consumption factor is high, and the vibration suppression effect is obvious, thus effectively improving the stability and machining accuracy of the CNC machine tool.

Compared with prior art, advantage of the present invention is as follows:

(1) After the present invention installs coupling energy-dissipating plates inside each structural part of the CNC machine tool, when the machine tool is cutting at high speed and heavy cutting, the unidirectional and multi-directional vibration energy generated by the cutting force can be rapidly dissipated step by step through the coupling energy-dissipating plates, The energy consumption factor is high, and the vibration suppression effect is obvious, which effectively improves the stability and machining accuracy of the machine tool.

(2) The present invention has little modification to the original structure, low additional cost and easy implementation.

(3) The surface low coefficient of restitution particles used in the present invention are based on metal materials, coated with methylphenyl polysiloxane and acrylate interpenetrating polymers, and the surface low coefficient of restitution particles have high strength, are not easy to corrode, and have a long service life. Long, can be used for a long time.

Description of drawings

Figure 1 is a top view of the groove position distribution of the coupling energy-dissipating plate installed on the structural part mainly subject to unidirectional vibration;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 2;

Fig. 4 is a top view of the groove position distribution of the coupling energy-dissipating plate installed on the structural part mainly subject to multi-directional vibration;

Fig. 5 is the C-C sectional view of Fig. 4;

Fig. 6 is a D-D sectional view of Fig. 4;

Fig. 7 is a schematic diagram of the structural parts of the CNC gantry milling machine;

Figure 8 is a schematic diagram of the installation of coupling energy dissipation boards at different heights of the CNC machine column;

Fig. 9 is a comparison curve of the frequency response function between the original column of the CNC machine tool and the method of the present invention.

Each mark in the figure is: 11—bed of CNC machine tool, 12—column of CNC machine tool, 13—beam of CNC machine tool, 14—top beam of CNC machine tool, 15—strengthening beam of CNC machine tool, 16—ram of CNC machine tool, 17—NC machine tool Electric spindle, 18—CNC machine tool table, 2—Coupling energy dissipation plate installed on the machine tool structure, 3—Arrangement grooves for surface low restitution coefficient particles processed on the coupling energy dissipation plate calculated by discrete elements , 4—polymer particles with high surface viscous resistance, 5—particles with low surface restitution coefficient.

Detailed ways

The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

1-8, the embodiment of the present invention is provided with CNC machine tool bed 11, CNC machine tool column 12, CNC machine tool beam 13, CNC machine tool top beam 14, CNC machine tool reinforcement beam 15, CNC machine tool ram 16, CNC machine tool electric spindle 17. CNC machine tool workbench 18;

In the CNC machine bed 11, the CNC machine column 12, the CNC machine beam 13, the CNC machine top beam 14, the CNC machine reinforcement beam 15, and the CNC machine ram 16, at least two layers of coupling energy-dissipating plates 2 are respectively arranged. The energy plate 2 is provided with a groove array, in each groove of the groove array, at least 2 grains of high surface viscous resistance polymer particles 4 are placed, and in each groove 3, 1 grain of surface low coefficient of restitution grain 5 is placed .

The groove array can be set as an m×n groove array, m is the number of particle grooves in the longitudinal direction of the coupling energy dissipation plate 2 , and n is the number of particle grooves in the width direction of the coupling energy dissipation plate 2 .

Thousands of high surface viscous resistance polymer particles 4 can be placed in each groove.

The high surface viscous resistance polymer particles 4 can be interpenetrating network polymers, which are a kind of forced mutual compatibility and synergistic effect through mutual cross-penetration and mechanical entanglement between double networks. The methyl phenyl polysiloxane and acrylate interpenetrating polymer polymer material with good comprehensive properties are interpenetrating network polymers, and the particle diameter of the polymer particles 4 with high surface viscosity resistance can be 0.1-0.3 mm.

The surface low recovery coefficient particles 5 can use metal particles coated with methylphenyl polysiloxane and acrylate interpenetrating network polymer, the density of the metal particles can be 7.0-18.3g/cm ³ , the metal particle The particle size can be 2-10mm, and the thickness of the coated methylphenylpolysiloxane and acrylate interpenetrating network polymer can be 0.2-0.5mm.

The coupling energy-dissipating plate is a metal plate with m×n groove arrays on its surface.

The groove diameter _d1 of the coupling energy-dissipating plate can be 0.92-0.94d, d is the diameter of the surface low recovery coefficient particles 5, the groove depth _h1 can be 0.21-0.23d, and the high surface area filled in the groove The depth _h2 between the viscous resistance polymer particles 4 and the surface of the coupling energy dissipation plate may be 0.079-0.081d.

During the cutting process of CNC machine tools, the cutting force of the spindle will cause the vibration of the structural parts of the machine tool. When the structural parts transmit the vibration to the coupling energy dissipation plate, the particles with low restitution coefficient 5 on the inner surface of the groove of the coupling energy dissipation plate will stick to the high surface. Rolling in the hysteresis polymer particle 4 , the viscous resistance dissipates 20% to 40% of kinetic energy in this process, and the greater the vibration displacement of the structure, the more energy is dissipated by the viscous resistance. When the energy transmitted by the structural parts of the machine tool is not large, the kinetic energy can be dissipated by relying on the viscous resistance produced by the particles 5 with low surface restitution coefficient rolling on the high-surface viscous resistance polymer particles 4; when the vibration energy is greater than the viscous resistance When dissipating energy, the adjacent particles with low restitution coefficient on the surface of the coupling energy dissipation plate collide inelastically with high collision frequency and low restitution coefficient, and the kinetic energy of the coupling energy dissipation plate is rapidly dissipated by 7 to 12 particles with low surface restitution coefficient. level dissipation. A necessary gap δ is reserved between the particles with low restitution coefficient on the adjacent surface, and the position arrangement of the particles with low restitution coefficient on the surface is calculated by discrete element calculation. Since the multi-layer coupling energy-dissipating plate is set on the structure of the CNC machine tool, the inelastic collision and rolling viscous resistance of the surface low restitution coefficient particles and the high surface viscous resistance polymer particles are carried out at high frequency on each layer of the coupling energy-dissipating plate Coupling energy consumption, so that the vibration generated by the cutting of the machine tool spindle is quickly suppressed by the added multi-layer energy dissipation board, the energy consumption factor is high, and the vibration suppression effect is obvious, thus effectively improving the stability and machining accuracy of the CNC machine tool.

After the unidirectional vibration is transmitted to the first particle with a low restitution coefficient on the surface, the attenuation of the velocity is as follows:

${\mathrm{<span\; class="notranslate">\; v</span>}}_{\mathrm{<span\; class="notranslate">\; no</span>}}<span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 2</span>}}{\overset{\mathrm{<span\; class="notranslate">\; no</span>}}{\mathrm{<span\; class="notranslate">\; \&Pi;</span>}}}\frac{{\mathrm{<span\; class="notranslate">\; \&mu;</span>}}_{\mathrm{<span\; class="notranslate">\; p</span>}}{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; e</span>}}_{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; ]</span>}{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; v</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}$

In the formula, m _i is the mass of the surface low restitution particle 5, e _i is the restitution coefficient of the surface low restitution particle 5, v ₁ is the initial velocity of the surface low restitution particle, v _n is the nth surface low restitution particle initial velocity, μ _p is the kinetic viscosity coefficient.

Through the coupling energy consumption of 7-10 particles with low surface restitution coefficient 5 inelastic collision with low restitution coefficient and the viscous resistance of polymer particles with high surface viscous resistance, the speed can be reduced by more than 80%, so the vibration energy can be quickly suppressed .

For structural parts that are mainly multi-directional during machine tool cutting, such as beams 13, columns 12, etc., the installation of the groove 3 on the coupling energy dissipation plate 2 is shown in Figures 4 to 6. At this time, if the groove 3 is also used in Figure 1 For the arrangement of ~3, the frequency of inelastic collision between one particle and the adjacent particle is low, and the energy dissipation effect is very poor, and the energy dissipation distribution of the entire coupling energy dissipation plate is uneven, which may easily lead to dynamic partial load of the machine tool structure. After calculation, the installation of the groove 3 on the coupling energy dissipation plate 2 at this time is shown in Figures 4-6, and there are 6 particles 5 with low surface restitution coefficient evenly distributed around each high surface viscous resistance polymer particle 4. Each inelastic collision has 3 to 4 low surface restitution particles 5 participating, through the inelastic collision of 9 to 12 surface low restitution particles 5 and the viscosity of high surface viscous resistance polymer particles 4 After the coupled energy consumption of the resistance, the speed can be reduced by more than 80%, and the vibration energy can be quickly suppressed.

A gap δ can be reserved between the low surface restitution particles 5 and the high surface viscous resistance polymer particles 4, and the gap δ can be 0.12-0.28d. If the gap δ is too large, the frequency of inelastic collisions of the surface low restitution particles will be reduced. If the gap δ is too small, it will affect the impulse attenuation in the compression stage and recovery stage of the inelastic collision of the surface low restitution particles 5. Therefore, the tolerance range of the machining accuracy of the groove and the shape accuracy of the surface low restitution particles 5 must meet the surface low restitution Coefficient of the gap δ between particles 5 .

Taking the column of a CNC machine tool as an example for illustration, FIG. 8 is a schematic diagram of installing a coupling energy-dissipating plate in the column of a CNC machine tool (ie, 12 in FIG. 7 ).

The height of the column of the CNC machine tool is 4.2m. Due to the large vibration displacement of the upper part of the column, a total of 22 layers of coupling energy-dissipating plates are installed at the height of the column of 3.2-4.1m. The particle diameter is 9.5mm, the density is 7.21g/cm ³ , the surface low recovery coefficient particles 5 are coated with methylphenyl polysiloxane and acrylate interpenetrating polymer, and the thickness of the coated polymer is 0.3mm. The arrangement of the grooves on the coupling energy dissipation plate is shown in Figure 4-6, the thickness of the coupling energy dissipation plate is 9.5mm, and the vertical spacing of the coupling energy dissipation plate is 4.5mm. The distance δ of the surface low restitution particles is 1.03mm, the value of the groove diameter _d1 is 8.3mm, and the groove depth _h1 is 1.9mm. The depth _h2 of the surface of the energy plate is 0.7 mm, and the particle diameter of the high surface viscous resistance polymer particles is 0.2 mm. During the cutting process of CNC machine tools, the vibration of the upper part of the machine column caused by the cutting force of the spindle will be transmitted to the arranged surface low restitution particle system through the coupling energy dissipation plate, and the surface low restitution particle system passes through the low restitution coefficient non- The coupling energy consumption of elastic collision and viscous resistance of fine particles quickly dissipates the transmitted mechanical energy step by step, which plays a role in improving the stability and machining accuracy of CNC machine tools.

A total of 27 layers of coupling energy-dissipating plates are installed at the height of the column of the CNC machine tool at ^2.1-3.2m . The low recovery coefficient particles 5 are coated with methylphenyl polysiloxane and acrylate interpenetrating polymer, and the thickness of the coated polymer is 0.27mm. The arrangement of the grooves on the coupling energy dissipation plate is shown in Figure 4-6. The thickness of the coupling energy dissipation plate is 7.5mm, and the vertical spacing of the coupling energy dissipation plate is 3.5mm. The distance δ of the particles with low surface restitution coefficient is 0.65mm, the value of the groove diameter _d1 is 4.8mm, the groove depth _h1 is 1.1mm, and the distance coupling loss of high surface viscous resistance polymer particles filled in the groove is The depth _h2 of the energy plate surface is 0.4 mm, and the particle diameter of the high surface viscous resistance polymer particles is 0.2 mm. During CNC machine tool cutting, the vibration in the middle of the machine column caused by the cutting force of the spindle will transmit the vibration to the arranged surface low-restitution particle system through the coupling energy-dissipating plate, and the surface low-restitution particle system passes through the non- The coupling energy consumption of elastic collision and viscous resistance of fine particles quickly dissipates the transmitted mechanical energy step by step, which plays a role in improving the stability and machining accuracy of CNC machine tools.

A total of 25 layers of coupling energy-dissipating plates are installed at the height of the column of the CNC machine tool at a height of ^0.7-2.1m . The low recovery coefficient particles 5 are coated with methylphenyl polysiloxane and acrylate interpenetrating polymer, and the thickness of the coated polymer is 0.21 mm. The arrangement of the grooves on the coupling energy dissipation plate is shown in Figures 4 to 6. The thickness of the coupling energy dissipation plate is 5.5 mm, and the vertical distance between the coupling energy dissipation plates is 1.8 mm. The distance δ of the surface low restitution particles is 0.52mm, the groove diameter _d1 is 3.53mm, and the groove depth _h1 is 0.84mm. The depth _h2 is 0.3mm, and the particle diameter of the high surface viscous resistance polymer particles is 0.2mm. During the cutting process of CNC machine tools, the vibration of the lower part of the machine column caused by the cutting force of the spindle will be transmitted to the arranged surface low coefficient of restitution particle system through the coupling energy dissipation plate, and the surface low restitution coefficient particle system passes through the non- The coupling energy consumption of elastic collision and viscous resistance of fine particles quickly dissipates the transmitted mechanical energy step by step, which plays a role in improving the stability and machining accuracy of CNC machine tools.

The stability analysis of the column of the CNC machine tool is carried out. The size of the column is 650mm×450mm×4300mm. Figure 9 is a comparison curve of the frequency response function between the original column and the method of the present invention. In the middle and low frequency band of 1-300Hz, the peak value of the first formant of the present invention is reduced by about 70% compared with the original column, the peak value of the second formant is reduced by about 50%, the third formant and subsequent formants are greatly suppressed, and the amplitude is reduced Up to 1400% ~ 3800%. In the middle frequency band of 300-600Hz, the present invention weakens the continuous high-value spectral peaks of the original column into two gentle spectral peaks. It can be seen that, after adopting the method of the present invention, the coupling energy consumption of the inelastic collision of the surface low restitution coefficient particle system and the viscous resistance of the microparticles will dissipate the mechanical energy delivered rapidly step by step. The stability of the machine tool has been greatly improved.

Claims (10)

1. Inelastic collision and rolling viscous resistance particle coupling energy-consuming CNC machine tool, characterized in that it is equipped with a CNC machine tool bed, a CNC machine column, a CNC machine tool beam, a CNC machine tool top beam, a CNC machine tool reinforcing beam, a CNC machine tool ram, CNC machine tool electric spindle, CNC machine tool table; There are at least 2 layers of coupling energy-dissipating plates in at least one structural part of the CNC machine tool, and the structural parts include the CNC machine bed, the CNC machine column, the CNC machine tool beam, the CNC machine tool top beam, the CNC machine tool reinforcing beam, and the CNC machine tool. At least one of the rams is provided with a groove array on the coupling energy dissipation plate, and at least 2 high surface viscous resistance polymer particles are placed in each groove of the groove array, and placed in each groove 1 surface low coefficient of restitution particle. 2. As claimed in claim 1, the inelastic collision and rolling viscous resistance particle coupling energy-dissipating numerical control machine tool is characterized in that the groove array is set as an m×n groove array, and m is the longitudinal direction particle of the coupling energy-dissipating plate The number of grooves, n is the number of particle grooves in the width direction of the coupling energy dissipation plate. 3. The energy-consuming CNC machine tool coupled with inelastic collision and rolling viscous resistance particles as claimed in claim 1, wherein thousands of grains of high surface viscous resistance polymer particles are placed in each groove. 4. The energy-consuming CNC machine tool coupled with inelastic collision and rolling viscous resistance particles as claimed in claim 1, characterized in that the high surface viscous resistance polymer particles are interpenetrating network polymers. 5. As claimed in claim 4, the inelastic collision and rolling viscous resistance particle coupling energy-consuming numerical control machine tool is characterized in that the interpenetrating network type polymer is to generate forced mutual tolerance through mutual cross-penetration and mechanical entanglement between the double networks The methyl phenyl polysiloxane and acrylate interpenetrating polymer polymer material with synergistic effect are interpenetrating network polymers, and the particle diameter of the polymer particles with high surface viscosity resistance is 0.1-0.3mm. 6. As claimed in claim 1, the inelastic collision and rolling viscous resistance particle coupling energy-consuming CNC machine tool is characterized in that the surface low recovery coefficient particles are coated with methylphenylpolysiloxane and acrylate on the outside of metal particles Interpenetrating network polymers. 7. The energy-consuming CNC machine tool coupled with inelastic collision and rolling viscous resistance particles as claimed in claim 6, characterized in that the density of the metal particles is 7.0-18.3 g/cm ³ , and the particle diameter of the metal particles is 2-10 mm . 8. as claimed in claim 6, inelastic collision and rolling viscous resistance particle coupling energy-consuming numerical control machine tool, it is characterized in that the thickness of described coated methylphenyl polysiloxane and acrylate interpenetrating network type polymer is 0.2～0.5mm. 9. The inelastic collision and rolling viscous resistance particle coupling energy-dissipating CNC machine tool according to claim 1, wherein the coupling energy-dissipating plate is a metal plate with an m×n groove array on its surface. 10. The inelastic collision and rolling viscous resistance particle coupling energy-dissipating CNC machine tool according to claim 1, characterized in that the groove diameter _d1 of the coupling energy-dissipating plate is 0.92-0.94d, and d is the surface low restitution coefficient The diameter of the particle and the depth _h1 of the groove are 0.21-0.23d, and the depth _h2 between the high surface viscous resistance polymer particles filled in the groove and the surface of the coupling energy dissipation plate can be 0.079-0.081d.