Manufacturing method of metal / non-metal all-material composite high-end numerical control machine tool

Abstract

The invention discloses a manufacturing method of a metal / nonmetal all-material composite high-end numerical control machine tool. Relates to marble, a carbon fiber composite material, gray iron and other materials, and adopts lattice and other hollow lightweight structures. The lathe bed is made of marble materials and is good in shock absorption performance, good in heat stability, small in internal stress, not prone to deformation and high in precision. Structural members such as a stand column, a cross beam and a spindle box are fused with a three-dimensional weaving technology, fused deposition modeling and an automatic laying technology and are made of carbon fiber composite materials, and stress caused by movement is reduced while rigidity is guaranteed. Structural members such as the workbench are cast by adopting HT300 or HT600 through a multi-material composite sand mold additive and subtractive manufacturing technology, the strength is high, the abrasion resistance is good, the stress is low, and the precision and the bearing capacity are high. The application of the carbon fiber composite material can reduce the weight of the machine tool structural member, improve the performance and reduce the manufacturing and test cost. The manufacturing method has the characteristics of low stress, high reliability, high precision and long service life.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of high-end numerical control machine tools, and particularly relates to a manufacturing method of a numerical control machine tool based on a metal / non-metal full material composite structure, in particular, to a manufacturing technology of a high-performance, low-stress, long-life numerical control machine tool integrating a marble material bed body, a carbon fiber composite material column, a cross beam and a spindle box, and a gray cast iron workbench. The manufacturing method is widely applied to the fields of aerospace, automobile manufacturing and other key core component manufacturing fields with extremely high requirements for machining precision and efficiency. BACKGROUND

[0002] Machine tools are known as "industrial mother machines" and are indispensable high-end equipment in modern manufacturing, which are applied to the fields of aerospace, precision molds, automobile manufacturing, medical devices and other fields with high requirements for machining precision and efficiency. With the development of intelligent manufacturing and industry 4.0, numerical control machine tools are continuously evolving towards high speed, high precision, multi-function and intelligence. The main function of machine tools is to accurately machine metals and other various materials to achieve the expected geometric shape, dimensional accuracy and surface finish. Machine tool castings (such as bed body, column, workbench, etc.) are the base of machine tools, accounting for more than 80% of the self-weight of machine tools, and their stability, wear resistance, shock absorption and rigidity have a direct impact on the overall performance of machine tools. High-end machine tool castings should have high compressive and tensile strength, high elastic modulus (i.e. high rigidity), low stress, no deformation, good wear resistance and shock absorption, high dimensional accuracy and surface finish, etc. High strength, high rigidity and low stress are mutually restrictive, and how to obtain high strength and high rigidity under high carbon equivalent is a problem to be solved and controlled in production.

[0003] However, there are mainly two kinds of machine tool castings on the market at present, namely gray cast iron castings and nodular cast iron castings, and nodular cast iron castings are rarely used, only used on individual models, and most of them are still produced using gray cast iron as the material of machine tool castings. Although this structure has certain static rigidity, it has many technical limitations in actual application and is difficult to meet the needs of modern manufacturing for high dynamic performance and precision retention, mainly having the following problems:

[0004] (1) The damping performance of single metal structure is limited, and the bed body is prone to resonance and vibration during high-speed machining or heavy load movement, thereby affecting the machining precision and surface quality.

[0005] (2) The thermal expansion coefficient of single metal material machine tool is large, and the structure is prone to deformation due to temperature rise during long-term machining, resulting in spindle deviation and increased machining error, which cannot meet the demand for high-precision continuous machining.

[0006] (3) The residual stress exists in the internal structure of the cast structure, and the traditional manufacturing process often lacks effective stress release treatment. The equipment is prone to fatigue damage, cracks and even deformation in long-term operation, affecting the stability and service life of the whole machine.

[0007] (4) The traditional driving system is heavy, the mechanical response speed is low, the energy consumption is high, and it is difficult to adapt to the trend of high acceleration, high precision and flexible manufacturing.

[0008] (5) The traditional numerical control system mostly adopts a closed architecture, lacks real-time state monitoring and adaptive control capability, and cannot make timely optimization response to the state change in the machining process.

[0009] Therefore, it is necessary to develop a manufacturing method of a high-end numerical control machine tool which breaks through the limitations of traditional structure and control mode, and realizes improvement in material structure, damping performance, thermal stability, intelligent control and the like, so as to meet the comprehensive requirements of high performance, strong adaptability and low maintenance of new generation intelligent manufacturing equipment. SUMMARY

[0010] In order to solve the technical problems of poor vibration resistance, weak thermal stability, unstable machining precision, short structure life and low process integration caused by the single metal casting bed body commonly used in the existing numerical control machine tool, the application discloses a manufacturing method of a metal / non-metal full material composite high-end numerical control machine tool, which is prepared by integrating marble, carbon fiber composite material and gray cast iron and the like metal / non-metal materials.

[0011] In order to achieve the above-mentioned purpose, the following scheme is specifically adopted:

[0012] In the first aspect, the application provides a metal / non-metal full material composite high-end numerical control machine tool, which comprises a bed body, a column, a column lower transition plate, a workbench, a workbench transition plate, a five-axis head point spindle, a spindle box mounting plate, a laser interferometer device and an intelligent control system. The force-bearing bed body structure is made of marble material, which has the advantages of good shock absorption performance, good thermal stability, small internal stress, not easy to deform, high precision and the like; the column, beam and spindle box and the like structural parts are made of carbon fiber composite material by integrating three-dimensional weaving technology, fused deposition modeling (FDM) and automatic placement technology (APT), which can reduce the stress caused by movement while ensuring rigidity; the workbench and the like structural parts are cast by HT300 or HT600 through multi-material composite sand type additive and subtractive manufacturing technology, which has high strength, good wear resistance, low stress, high precision and high carrying capacity.

[0013] In the second aspect, the application provides a manufacturing method of a metal / non-metal full material composite high-end numerical control machine tool, which comprises the following steps:

[0014] Step 1: Material Selection: Materials are selected based on the machine tool's required machining rigidity, thermal stability, and dynamic response characteristics. Specifically, marble is selected for the bed structure; after long-term aging treatment, this material has a uniform microstructure, low coefficient of linear expansion, elimination of internal stress, resistance to deformation, high precision, good rigidity, and high hardness. Carbon fiber composite materials are selected for the column, beam, and spindle structure; this material has high mechanical strength (high tensile and compressive strength), low coefficient of thermal expansion, high temperature resistance, light weight, good rigidity, good damping and self-lubricating properties, good fatigue resistance and durability, and can reduce stress caused by movement while ensuring rigidity. HT300 or HT600 gray cast iron is selected for structural components such as the worktable.

[0015] Step 2, Structural Component Manufacturing: The marble bed is machined using high-precision cutting and grinding processes to ensure its flatness and dimensional accuracy; carbon fiber composite columns, beams, and spindle boxes are manufactured using three-dimensional weaving technology, fused deposition modeling (FDM) technology, and automated placement technology (APT); HT300 or HT600 worktables and other structural components are cast using multi-material composite sand mold additive and subtractive manufacturing technology. This composite sand mold is prepared using chromite sand with a fast cooling rate, zircon sand, and silica sand with good permeability and low cost. It can control the solidification process of HT300 or HT600, so that the casting solidifies evenly, reduces stress, and improves the quality and performance of the casting.

[0016] Step 3: Structural Component Assembly: Assemble the metal / non-metal all-material machine tool components according to design requirements. For structural components such as carbon fiber composite columns, beams, and spindle boxes, the connection to metal castings employs three methods: mechanical connection (riveting), adhesive bonding, and fusion welding, to improve overall structural rigidity and suppress fretting at the connection points. Structural components such as the multi-material composite sand mold HT300 or HT600 worktable are fixedly connected to the marble bed using screws and buffer pads. Strict tolerance control is maintained during assembly to ensure overall geometric accuracy and dynamic rigidity.

[0017] As a further design feature of this solution, the bed is made of marble, which has good shock absorption and thermal stability, is not greatly restricted by the environment during manufacturing, has low internal stress, is not easily deformed, and has high precision; the columns, crossbeams, and spindle boxes are made of carbon fiber composite materials, which can reduce stress caused by movement while ensuring rigidity; the worktable and other structural components are made of HT300 or HT600, which has high precision and load-bearing capacity.

[0018] As a further design feature of this solution, the bed structure is made of marble. After long-term aging, the rock exhibits a uniform microstructure, low coefficient of linear expansion, elimination of internal stress, no deformation, high precision, good rigidity, and high hardness. Through lightweight structural design and manufacturing, the total deformation is reduced by no less than 23%, the equivalent stress by no less than 15%, and the mass by no less than 1%. A nano-ceramic coating is applied to the surface to improve wear resistance and heat reflection. A concealed, retractable laser interferometer is included, enabling high-precision measurement of geometric parameters such as linear length, angle, straightness, perpendicularity, parallelism, and flatness, with strong anti-interference capabilities and good long-term stability.

[0019] As a further design feature of this scheme, the structural components such as the columns, beams, and spindle boxes are made of carbon fiber composite materials, which offer high mechanical strength (high tensile and compressive strength), minimal thermal expansion, high temperature resistance, light weight, good rigidity, good damping and self-lubricating properties, and excellent fatigue resistance and durability. This ensures rigidity while reducing stress caused by movement. Internally, the grid and lattice structure are printed using carbon fiber composite material fused deposition modeling (FDM) technology, while externally, three-dimensional weaving and automated placement technologies are used for external structural forming, resulting in significant advantages in lightweighting, stability, and low stress. Carbon fiber composite materials are categorized into resin-based carbon fiber composites, carbon / carbon fiber composites, metal-based carbon fiber composites, and ceramic-based carbon fiber composites. Connections to metal castings are achieved through three methods: mechanical connection (riveting), adhesive bonding, and fusion welding, to improve overall structural rigidity and suppress fretting at the joints.

[0020] As a further design feature of this solution, the worktable and other structural components are manufactured using HT300 or HT600 stainless steel. The castings are produced using multi-material composite sand molds, which significantly reduces stress and improves precision and reliability. The composite sand molds are prepared using fast-cooling chromite sand, zircon sand, and inexpensive, permeable silica sand. This allows for control over the solidification process of the HT300 or HT600, ensuring uniform solidification of the castings, significantly reducing stress, and improving casting quality and performance. The castings are securely connected to the marble bed using screws and buffer pads.

[0021] As a further design feature of this solution, the coefficient of thermal expansion of the marble bed frame is approximately 6.8 x 10⁻⁶. -6 / K; The coefficient of thermal expansion for structural components such as columns, beams, and spindle boxes made of carbon fiber composite materials is approximately 1.0 × 10⁻⁶. -6 / K to 2.0×10 -6 Between / K; the coefficient of thermal expansion of structural components such as gray cast iron workbenches is approximately 9.6 × 10⁻⁶ at room temperature. -6 / K, the coefficient of thermal expansion increases with increasing temperature, reaching a maximum of 13.5×10. -6 / K. Gray cast iron worktables have the highest coefficient of thermal expansion, making them highly sensitive to temperature changes and resulting in high internal stress. Carbon fiber composite columns, beams, and spindle boxes have the lowest coefficient of thermal expansion, exhibiting low sensitivity to temperature changes and relatively low internal stress.

[0022] As a further design feature of this solution, the intelligent control system can collect real-time data on load, temperature, and vibration frequency of key components such as the machine tool column, crossbeam, spindle box, worktable, and base. The data acquisition accuracy is: 0.05ppm; linear measurement accuracy: 0.5ppm (0-40)℃; linear measurement distance: (0-80)m (no long-distance linear accessory required); angle measurement accuracy: not less than ±0.04% ±0.5 ±0.1M µm / m; measurement resolution: 1nm; dynamic acquisition frequency: 50KHz. The system then analyzes and processes this data to generate machining parameters and compensation control commands, achieving adaptive optimization and closed-loop control of the machining process.

[0023] This invention also provides a method for manufacturing a high-end CNC machine tool made of all-material composite metal / non-metal materials, comprising the following steps:

[0024] Step 1: Based on the required machining rigidity, thermal stability and dynamic response characteristics of the machine tool, the response of the bed under load, temperature rise and vibration conditions is optimized and analyzed through finite element simulation. Three materials are selected: natural marble, ductile iron and carbon fiber composite material.

[0025] Step 2: The bed structure is made of marble; the columns, beams and spindle boxes are made of carbon fiber composite materials using fused deposition modeling (FDM), 3D weaving technology and automated placement technology (APT); the worktable and other structural components are cast using HT300 or HT600 through multi-material composite sand casting technology.

[0026] Step 3: High-precision cutting and grinding of natural marble to ensure its flatness and dimensional accuracy; 3D weaving technology, fused deposition modeling (FDM), and automated placement technology (APT) are used for structural components such as carbon fiber composite columns, beams, and spindle boxes to achieve the structural characteristics of high rigidity and lightweight; multi-material composite sand casting and machining are used for structural components such as HT casting worktables to ensure low stress, strength, precision, and stability.

[0027] Step 4: Assemble the metal / non-metal all-material machine tool components according to design requirements. The connection methods for structural components such as carbon fiber composite columns, beams, and spindle boxes with metal castings include mechanical connections (riveting), adhesive bonding, and fusion welding, to improve overall structural rigidity and suppress fretting at the joints. Structural components such as the multi-material composite sand mold HT300 or HT600 worktable are fixedly connected to the marble bed using screws and buffer pads. Strict tolerance control is required during assembly to ensure overall geometric accuracy and dynamic rigidity.

[0028] Beneficial effects of the present invention

[0029] (1) By combining various materials such as natural marble, ductile iron and carbon fiber composites, a bed structure with high rigidity, low vibration and good thermal stability is constructed, which greatly improves the structural stability and accuracy retention of the machine tool under high-speed machining conditions.

[0030] (2) The carbon fiber composite material coating design effectively reduces system weight and inertia, improves drive response speed and processing efficiency, and is suitable for high-speed and high-precision processing scenarios.

[0031] (3) By integrating an intelligent control system, the system can achieve real-time simulation, parameter optimization and closed-loop control of the processing process, which greatly improves the system's intelligence level, fault prediction capability and control accuracy. Attached Figure Description

[0032] Figure 1 This is a flowchart of the method of the present invention.

[0033] Figure 2 This is a schematic diagram of the machine tool in this invention.

[0034] Figure 3 This is a schematic diagram of the bed structure in this invention.

[0035] Figure 4 This is a schematic diagram of the column structure in this invention.

[0036] Figure 5 This is a schematic diagram of the transition plate structure under the column in this invention.

[0037] Figure 6 This is a schematic diagram of the workbench structure in this invention.

[0038] Figure 7 This is a schematic diagram of the workbench transition plate structure in this invention.

[0039] Figure 8 This is a schematic diagram of the spindle box mounting plate structure in this invention.

[0040] Attached diagram descriptions: 1-Bed, 2-Column, 3-Column lower transition plate, 4-Worktable, 5-Worktable transition plate, 6-Five-axis head point spindle, 7-Spindle box mounting plate, 8-Laser interferometer device, 9-Intelligent control system. Detailed Implementation

[0041] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0042] Specific implementation details are provided using a five-axis machining center case study. For example... Figures 1-8 As shown in the diagram, this invention provides a structural schematic of a manufacturing method for a high-end CNC machine tool made of all-metal / non-metal composite materials. The main components include: a bed 1, a column 2, a lower column transition plate 3, a worktable 4, a worktable transition plate 5, a five-axis head-point spindle 6, a spindle box mounting plate 7, a laser interferometer device 8, and an intelligent control system 9. The bed 1 of the high-end CNC machine tool is made of marble; the column 2 and the spindle box mounting plate 7 are made of carbon fiber composite material; and the lower column transition plate 3, the worktable 4, and the worktable transition plate 5 are made of composite sand-cast gray iron.

[0043] The marble bed 1 is manufactured through a lightweight structural design, reducing total deformation by no less than 23%, equivalent stress by no less than 15%, and mass by no less than 1%. A nano-ceramic coating is applied to the surface to improve wear resistance and heat reflectivity. It features a precision reference measurement function for leveling the reference surface of the machine tool structure and includes a hidden retractable laser interferometer device 8. This allows for high-precision measurement of geometric parameters such as linear length, angle, straightness, perpendicularity, parallelism, and flatness, exhibiting strong anti-interference capabilities and good long-term stability. The carbon fiber composite column 2 and spindle box mounting plate 7 utilize carbon fiber composite fused deposition modeling technology for internal grid and dot matrix structure printing, while externally employing three-dimensional weaving technology, fused deposition modeling, and automatic layup technology for external structural forming, demonstrating significant advantages in lightweighting, stability, and low stress. Carbon fiber composite materials are categorized into several types, including resin-based carbon fiber composites, carbon / carbon fiber composites, metal-based carbon fiber composites, and ceramic-based carbon fiber composites. Connections to gray cast iron castings are achieved through mechanical connection (riveting), adhesive bonding, and fusion welding to improve overall structural rigidity and suppress fretting at the joints. The column transition plate 3, worktable 4, and worktable transition plate 5 are cast using a composite sand casting technology. The composite sand mold is prepared using fast-cooling chromite sand, zircon sand, and inexpensive, permeable silica sand. This allows for control of the solidification process of HT300 or HT600 castings, ensuring uniform solidification, significantly reducing stress, and improving casting quality and performance. The castings are fixedly connected to the marble bed using screws and buffer pads. The coefficient of thermal expansion of the marble bed 1 is approximately 6.8 x 10⁻⁶. -6 / K; The coefficient of thermal expansion of the carbon fiber composite column 2 and spindle box mounting plate 7 is approximately 1.0 × 10⁻⁶. -6 / K~2.0×10 -6 Between / K; the thermal expansion coefficient of the structural components, including column transition plate 3, workbench 4, and workbench transition plate 5, is approximately 9.6 × 10⁻⁶ at room temperature. -6 / K, the coefficient of thermal expansion increases with increasing temperature, reaching a maximum of 13.5×10. -6 / K. Gray cast iron structural components have the highest coefficient of thermal expansion, making them highly sensitive to temperature changes and resulting in high internal stress. Carbon fiber composite structural components have the lowest coefficient of thermal expansion, exhibiting lower sensitivity to temperature changes and relatively lower internal stress. The intelligent control system 9 is installed inside the column, such as... Figure 4As shown, it can collect data such as load, temperature, and vibration frequency of key components of the machine tool, such as the bed, column, crossbeam, spindle box, and worktable, in real time, and analyze and process the data to generate machining parameters and compensation control commands, realizing adaptive optimization and closed-loop control of the machining process. Acquisition frequency stability accuracy: 0.05ppm; linear measurement accuracy: 0.5ppm (0-40)℃; linear measurement distance: 0-80m; angle measurement accuracy: not less than ±0.04%±0.5±0.1M µm / m; measurement resolution: 1nm; dynamic acquisition frequency: 50KHz.

[0044] First, based on the required machining rigidity, thermal stability, and dynamic response characteristics of the machine tool, the response of the bed under load, temperature rise, and vibration conditions is optimized and analyzed through finite element simulation. Three materials are selected: natural marble, ductile iron, and carbon fiber composite material. The bed is mainly composed of a marble integral bed 1, a carbon fiber composite column 2, a spindle box mounting plate 4, a composite sand mold gray cast iron casting column lower transition plate 3, a worktable 4, and a worktable transition plate 5.

[0045] The bed 1 is constructed from marble and undergoes high-precision cutting and grinding to ensure flatness and dimensional accuracy. The column 2 and spindle box mounting plate 7 are made of carbon fiber composite material, incorporating 3D weaving, fused deposition modeling (FDM), and automated placement technology (APT). Internally, FDM is used to print the grid and dot matrix structure, while externally, 3D weaving and APT are used for the external structure. Figure 4 and Figure 8 As shown, the structural characteristics of high rigidity and lightweight are achieved; structural components such as the column transition plate 3, workbench 4, and workbench transition plate 5 are cast using HT300 or HT600 through multi-material composite sand casting technology to ensure low stress, strength, precision and stability.

[0046] The machine tool components, made of both metal and non-metal materials, are assembled according to specified methods. The carbon fiber composite column 2, spindle box mounting plate 7, and the HT300 or HT600 casting column lower transition plate 3, worktable 4, and worktable transition plate 5 are connected using three methods: mechanical connection (riveting), adhesive bonding, and fusion welding, to improve overall structural rigidity and suppress fretting at the joints. The HT300 or HT600 casting column lower transition plate 3, worktable 4, and worktable transition plate 5 are fixedly connected to the marble bed 1 using screws and buffer pads. Strict tolerance control is required during assembly to ensure overall geometric accuracy and dynamic rigidity.

[0047] The overall structure of the machine tool is optimized through the collaborative design of metal and non-metal structural components. While maintaining high rigidity, it achieves effective weight reduction, resistance to thermal deformation and vibration resistance, making it suitable for high-speed and high-precision five-axis machining scenarios for complex surfaces and irregularly shaped workpieces.

Claims

1. A method for manufacturing a high-end CNC machine tool made of all-metal / non-metal composite materials, characterized in that, Includes the following steps: Step 1, Material Selection: Select materials based on the required machining rigidity, thermal stability, and dynamic response characteristics of the machine tool; marble is selected for the bed structure; carbon fiber composite material is selected for the column, crossbeam, and spindle structure; and HT300 or HT600 gray cast iron is selected for the worktable structure. Step 2, Structural Component Manufacturing: The marble bed is machined using high-precision cutting and grinding processes; carbon fiber composite columns, beams, and spindle box structural components are manufactured using three-dimensional weaving technology, fused deposition modeling (FDM) technology, and automated placement technology (APT); HT300 or HT600 worktable structural components are cast using multi-material composite sand mold additive and subtractive manufacturing technology. The multi-material composite sand mold is prepared using chromite sand with a fast cooling rate, zircon sand, and silica sand with good permeability and low cost. Step 3: Structural component assembly: Assemble each component according to the design requirements. The connection between the carbon fiber composite column, beam and spindle box structural components and the metal castings adopts three methods: mechanical connection, adhesive bonding and fusion welding. The multi-material composite sand mold HT300 or HT600 worktable structural components are fixedly connected to the marble bed by screw locking and buffer pad. Strict tolerance control is required during the assembly process.

2. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, The marble bed frame in step one is manufactured through a lightweight structural design, reducing the total deformation by no less than 23%, the equivalent stress by no less than 15%, and the mass by no less than 1%; and the surface of the marble bed frame is sprayed with a nano-ceramic coating to improve wear resistance and heat reflection capability.

3. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, The marble bed is equipped with a precision reference measurement function, which can perform reference surface leveling of the machine tool structure, and is equipped with a hidden retractable laser interferometer device; the laser interferometer device can realize high-precision measurement of linear length, angle, straightness, perpendicularity, parallelism and flatness.

4. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1 is characterized in that, The manufacturing method of the carbon fiber composite column, beam and spindle box structure in step two is as follows: the internal grid and dot matrix structure are printed and formed by carbon fiber composite melt deposition molding technology, and the external structure is covered and formed by three-dimensional weaving technology, melt deposition molding and automatic laying technology.

5. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, The carbon fiber composite material is one or more of resin-based carbon fiber composite materials, carbon / carbon fiber composite materials, metal-based carbon fiber composite materials, and ceramic-based carbon fiber composite materials.

6. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, In step two, the multi-material composite sand mold HT300 or HT600 workbench structural component is cast and formed using sand mold additive and subtractive composite manufacturing technology. The composite sand mold is prepared using chromite sand with a fast cooling rate, zircon sand, and silica sand with good permeability and low cost. This allows for the control of the solidification process of HT300 or HT600, enabling the casting to solidify evenly, reducing stress, and improving the quality and performance of the casting.

7. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, The coefficient of thermal expansion of a marble bed frame is 6.8 x 10⁻⁶. -6 / K; The coefficient of thermal expansion for the carbon fiber composite columns, beams, and spindle box structures is 1.0×10⁻⁶. -6 / K~2.0×10 -6 Between / K; the coefficient of thermal expansion of the gray cast iron worktable structural components is 9.6×10 at room temperature. -6 / K, the coefficient of thermal expansion increases with increasing temperature, reaching a maximum of 13.5×10. -6 / K.

8. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 1, characterized in that, It also includes the installation and debugging steps of the intelligent control system. The intelligent control system can collect load, temperature and vibration frequency data of key components of the machine tool bed, column, crossbeam, spindle box and worktable in real time, and analyze and process them to generate machining parameters and compensation control commands, so as to realize adaptive optimization and closed-loop control of the machining process.

9. The manufacturing method of the high-end CNC machine tool with metal / non-metal all-material composite as described in claim 8, characterized in that, The technical parameters of the intelligent control system are as follows: Frequency stabilization accuracy: 0.05ppm; Linear measurement accuracy: 0.5ppm (0-40)℃; Linear measurement distance: 0-80m; Angle measurement accuracy: ± not less than ±0.04% ±0.5 ±0.1M µm / m; Measurement resolution: 1nm; Dynamic acquisition frequency: 50KHz.

Images