A machine tool

Abstract

The application provides a machine tool, comprising a machine tool body, a workbench body, a cooling oil circuit and a circulating cooling system, the workbench body is arranged on the machine tool body, the workbench body has a first mounting surface and a second mounting surface, the first mounting surface is used for carrying a workpiece to be machined, and the second mounting surface is used for being connected with a base; the cooling oil circuit is arranged on the workbench body, the cooling oil circuit comprises a pipeline body, a pipeline inlet and a pipeline outlet, the pipeline body is arranged in the workbench body and is used for containing cooling liquid, the pipeline inlet and the pipeline outlet are arranged on the surface of the workbench body, one end of the pipeline body is communicated with the pipeline inlet, and the other end of the pipeline body is communicated with the pipeline outlet; and the circulating cooling system is communicated with the pipeline outlet. Through the physical support of the base on the workbench body and the heat exchange between the cooling oil circuit and the circulating cooling system, the problem that the machining precision is affected due to the deformation of components caused by the heating of the motor of the workbench in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and more specifically, to a machine tool. Background Technology

[0002] Currently, the machine tool industry plays a core role in manufacturing, and the performance of its worktable directly affects machining accuracy and efficiency. Traditional machine tools are typically composed of a single block, directly contacting the workpiece and providing necessary support and positioning. These worktables are mostly made of steel or cast iron, due to their good hardness and wear resistance, enabling them to withstand the impacts and pressures during machining. The worktable surface has several holes and T-slots to facilitate workpiece fixation and fixture installation. Simultaneously, the holes also help remove metal shavings generated during machining, keeping the worktable clean and stable. However, in modern high-precision machine tools, the application of linear motors is becoming increasingly widespread, providing more precise and faster movement to meet the demands of precision machining.

[0003] However, the linear motor's mover, as a high-heat-generating component, is directly in contact with the worktable, lacking effective heat dissipation and isolation measures, thus becoming a major bottleneck restricting machine tool performance. During prolonged operation, the motor generates a significant amount of heat, which is directly transferred to the worktable, causing its temperature to rise and leading to thermal expansion of the material. This is particularly problematic for machining tasks requiring extremely high dimensional accuracy, where even minor deformation can significantly impact machining precision. Therefore, existing machine tools face severe challenges in terms of stability, accuracy, and tool life when dealing with the heat generated by linear motors. Summary of the Invention

[0004] The main objective of this invention is to provide a machine tool that solves the problem in the prior art where the deformation of components caused by motor heating affects the machining accuracy.

[0005] To achieve the above objectives, the present invention provides a machine tool for carrying a workpiece to be processed, comprising: a machine tool body, on which a base is disposed; a worktable body disposed on the base, having a first mounting surface and a second mounting surface, the first mounting surface for carrying the workpiece to be processed, and the second mounting surface for connecting to the base; a cooling oil circuit disposed on the worktable body, including a pipe body, a pipe inlet, and a pipe outlet, the pipe body being disposed within the worktable body for containing coolant, the pipe inlet and the pipe outlet being disposed on the surface of the worktable body, one end of the pipe body communicating with the pipe inlet, and the other end of the pipe body communicating with the pipe outlet; and a circulating cooling system having an input end and an output end, the output end communicating with the pipe inlet liquid circuit, and the input end communicating with the pipe outlet liquid circuit, so as to circulate the coolant within the pipe body.

[0006] Furthermore, the machine tool also includes multiple cooling oil circuits, with the inlet and outlet of each cooling oil circuit connected to the liquid circuit at the output end, and the outlet of each cooling oil circuit connected to the liquid circuit at the input end; the pipe body includes multiple serpentine pipes, which are connected in series so that the pipe body extends along a preset direction, and the horizontal plane of the preset direction is set parallel to the second mounting surface.

[0007] Furthermore, the machine tool also includes a temperature sensor disposed on the first mounting surface for monitoring the temperature on the first mounting surface; a first temperature detection element and a first flow control valve are both disposed at the inlet of the pipeline, the opening of the first flow control valve is adjustable, and the first temperature detection element is used to detect the temperature at the inlet of the pipeline; a second temperature detection element and a second flow control valve are both disposed at the outlet of the pipeline, the opening of the second flow control valve is adjustable, and the second temperature detection element is used to detect the temperature at the outlet of the pipeline; a control element is connected to the temperature sensor, the first temperature detection element, the second temperature detection element, the first flow control valve, and the second flow control valve, and the control element adjusts the first flow control valve and the second flow control valve according to the temperature detected by the temperature sensor.

[0008] Furthermore, when the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to a preset difference value, and the temperature detected by the temperature sensor is within a preset temperature range, the opening degree of the first flow control valve and the second flow control valve is reduced; when the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to a preset difference value, and the temperature detected by the temperature sensor is greater than a preset temperature range, the opening degree of the first flow control valve is maintained at the current opening degree, and the opening degree of the second flow control valve is reduced; when the temperature difference between the first temperature sensor and the second temperature sensor is greater than a preset difference value, and the temperature detected by the temperature sensor is greater than a preset temperature range, the opening degree of both the first flow control valve and the second flow control valve is increased, and the increased opening degree of the first flow control valve is greater than the increased opening degree of the second flow control valve.

[0009] Furthermore, the workbench body includes a first workbench with a first mounting surface disposed on the first workbench; and a second workbench with a second mounting surface disposed at the end of the second workbench away from the first workbench, and the second workbench and the first workbench are detachably connected.

[0010] Furthermore, there are multiple cooling oil circuits. At least one of the multiple cooling oil circuits is provided on the first worktable, the pipe body is located inside the first worktable, and the pipe inlet and pipe outlet are located on the surface of the second worktable; at least one of the multiple cooling oil circuits is provided on the second worktable, the pipe body is located inside the second worktable, and the pipe inlet and pipe outlet are located on the surface of the second worktable.

[0011] Furthermore, the machine tool also includes a third worktable, which is detachably disposed between the first and second worktables, and has multiple cooling oil passages; at least one of the multiple cooling oil passages is disposed on the first worktable, with the pipe body disposed inside the first worktable and the pipe inlet and pipe outlet disposed on the surface of the second worktable; at least one of the multiple cooling oil passages is disposed on the second worktable, with the pipe body disposed inside the second worktable and the pipe inlet and pipe outlet disposed on the surface of the second worktable; at least one of the multiple cooling oil passages is disposed on the third worktable, with the pipe body disposed inside the third worktable and the pipe inlet and pipe outlet disposed on the surface of the third worktable.

[0012] Furthermore, the worktable also includes a motor, which includes a stator and a mover, which are slidably connected. The stator is mounted on the base, and the mover is mounted on the second mounting surface, so that the worktable body is slidably connected to the machine tool body; wherein, the second worktable is made of non-magnetic material.

[0013] Furthermore, the machine tool also includes multiple fasteners. The first worktable is provided with multiple connection holes at one end near the second worktable. The second worktable is provided with multiple through holes corresponding to the multiple connection holes. Each fastener is inserted into the through hole and connected to the connection hole.

[0014] Furthermore, the machine tool body also includes a guide rail, which is fixedly mounted on the base; and a slider, one end of which is slidably connected to the guide rail, and the other end of which is fixedly connected to the second mounting surface, so that the worktable body is slidably connected to the base.

[0015] Applying the technical solution of this invention, the machine tool body is the foundation of the entire machine tool, supporting and integrating all its components. The base, as part of the machine tool body, primarily supports and fixes the worktable, ensuring its stability during machining. The first mounting surface directly supports and fixes the workpiece, a key surface for the worktable body to achieve its function; the second mounting surface connects to the base, maintaining the stability of the worktable body. Simultaneously, in conjunction with the circulating cooling system, it ensures the worktable body maintains good thermal stability even when the motor generates heat, preventing component deformation from affecting machining accuracy. Cooling oil circuits are located within the worktable body, working closely with the circulating cooling system. Through liquid circulation at the pipe inlet and outlet, it effectively removes heat accumulated in the worktable body due to motor heating. The circulating cooling system, as the external power source for the cooling oil circuits, regulates the coolant flow and temperature to ensure internal thermal management of the worktable body, maintaining its operation within a suitable temperature range. This indirectly guarantees the normal operation of the motor and improves the overall accuracy and reliability of the machine tool. This application solves the technical problem of affecting machining accuracy due to motor heat generation during long-term machining in traditional machine tools by using the physical support of the base for the worktable body and the heat exchange between the cooling oil circuit and the circulating cooling system. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A front view diagram of an embodiment of a machine tool according to the present invention is shown;

[0018] Figure 2 A perspective schematic diagram of an embodiment of a machine tool according to the present invention is shown;

[0019] Figure 3 A perspective view of the worktable body and the mover according to an embodiment of a machine tool according to the present invention is shown.

[0020] Figure 4 A perspective view of a first worktable according to an embodiment of a machine tool of the present invention is shown;

[0021] Figure 5 A top view of a first worktable according to an embodiment of a machine tool according to the present invention is shown;

[0022] Figure 6 A top view of a second worktable according to an embodiment of a machine tool according to the present invention is shown;

[0023] Figure 7 A side view of a second worktable according to an embodiment of a machine tool according to the present invention is shown;

[0024] Figure 8 A second worktable edge is shown according to an embodiment of a machine tool according to the present invention. Figure 7 A cross-sectional view along the AA direction.

[0025] The above figures include the following reference numerals:

[0026] 100. Worktable body; 101. First mounting surface; 102. Second mounting surface; 110. First worktable; 111. Connecting hole; 120. Second worktable; 121. Through hole; 200. Cooling oil passage; 210. Pipe body; 211. Serpentine pipe; 220. Pipe inlet; 230. Pipe outlet; 300. Machine tool body; 310. Base; 320. Motor; 321. Mover; 322. Stator; 330. Guide rail; 340. Slider. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 8 As shown, an embodiment of the present invention provides a machine tool for carrying a workpiece to be processed, including a machine tool body 300, on which a base 310 is disposed; a worktable body 100, which is disposed on the base 310 and has a first mounting surface 101 and a second mounting surface 102, wherein the first mounting surface 101 is used to carry the workpiece to be processed and the second mounting surface 102 is used to connect with the base 310; and a cooling oil passage 200, which is disposed on the worktable body 100 and includes a pipe body 210. The system includes a pipe inlet 220 and a pipe outlet 230. A pipe body 210 is disposed within the workbench body 100 to contain coolant. The pipe inlet 220 and the pipe outlet 230 are disposed on the surface of the workbench body 100. One end of the pipe body 210 is connected to the pipe inlet 220, and the other end of the pipe body 210 is connected to the pipe outlet 230. A circulating cooling system is also included, having an input end and an output end. The output end is connected to the liquid passage of the pipe inlet 220, and the input end is connected to the liquid passage of the pipe outlet 230, so that the coolant in the pipe body 210 circulates.

[0029] The machine tool provided in this embodiment of the invention solves the technical problem of the traditional machine tool affecting the machining accuracy due to the heat generated by the motor 320 during long-term machining by using the physical support of the worktable body 100 by the base 310 and the heat exchange between the cooling oil circuit 200 and the circulating cooling system.

[0030] In the above embodiment, the machine tool body 300 is the foundation of the entire machine tool, supporting and integrating all its components. The base 310, as part of the machine tool body 300, primarily supports and fixes the worktable body 100, ensuring its stability during machining. The first mounting surface 101 directly supports and fixes the workpiece, a key surface for the worktable body 100 to achieve its function; the second mounting surface 102 connects to the base 310, maintaining the stability of the worktable body 100. Simultaneously, in conjunction with the circulating cooling system, it ensures good thermal stability of the worktable body 100 even when the motor 320 generates heat, preventing component deformation from affecting machining accuracy. The cooling oil circuit 200 is located within the worktable body 100, working closely with the circulating cooling system. Through liquid circulation via the pipe inlet 220 and pipe outlet 230, it effectively removes the heat accumulated in the worktable body 100 due to the motor 320. A circulating cooling system is a system designed to continuously remove heat from the worktable or other heat-generating components by repeatedly using a cooling medium (such as water, oil, or a special coolant). As an external power source for the cooling oil circuit 200, the circulating cooling system regulates the flow rate and temperature of the coolant to ensure thermal management within the worktable body 100, maintaining its operation within a suitable temperature range. This indirectly guarantees the normal operation of the motor 320 and also improves the overall accuracy and reliability of the machine tool.

[0031] The principle of this application is to utilize the coolant supplied by the circulating cooling system to exchange heat through the pipeline body 210, carrying away the heat generated by the worktable body 100 during processing. The implementation effect is significant, effectively reducing the worktable temperature, minimizing processing errors caused by thermal deformation, and improving processing accuracy and workpiece surface quality. Application scenarios are mainly concentrated in high-precision machine tools, such as CNC machine tools and laser cutting machines, especially machine tools operating in long-term continuous processing or high-temperature environments. The application process involves starting and adjusting the cooling system to ensure that the coolant flow rate and temperature meet the heat dissipation requirements of the worktable.

[0032] In some embodiments, depending on the characteristics of different application scenarios, the circulating cooling system can be designed in various forms, including but not limited to built-in, independent, or intelligent temperature-controlled structures, to meet diverse cooling needs. Although this application mainly discusses liquid cooling systems, in some cases, combining air cooling (i.e., forced air cooling) can further improve cooling efficiency, especially in situations where the worktable body is large or requires rapid cooling. The main components of the cooling system, such as pumps, filters, and heat exchangers, can be designed to be built into the machine tool body or worktable body. This not only saves space but also helps reduce the impact of external environmental factors on the cooling system, improving system stability and reliability. The circulating pump is installed inside the machine tool body. The coolant is pumped through the heat exchanger (such as water-cooled coils, air-cooled radiators, etc.) and then transported through pipelines to the cooling oil passage 200 inlet of the worktable body 100. The cooled liquid flows within the pipeline body 210 inside the worktable body 100, absorbing heat from the heat-generating components, and finally returns to the heat exchanger of the circulating cooling system through the pipeline outlet for recooling and reuse. This design not only reduces the need for external cooling equipment but also optimizes the coolant flow path, contributing to improved cooling efficiency and the overall system compactness. For highly customized cooling requirements, independent cooling units can be designed and connected to the cooling oil circuit 200 of the worktable body 100 via hoses. This approach allows for flexible adaptation to different machine tool models and sizes, while also facilitating the maintenance and upgrades of the cooling unit.

[0033] Specifically, the machine tool in this embodiment of the invention further includes multiple cooling oil passages 200. The inlet 220 of each cooling oil passage 200 is connected to an output liquid passage, and the outlet 230 of each cooling oil passage 200 is connected to an input liquid passage. The pipe body 210 includes multiple serpentine tubes 211, which are connected in series to extend the pipe body 210 along a preset direction. The horizontal plane containing the preset direction is parallel to the second mounting surface 102. By introducing multiple cooling oil passages 200 and serpentine tubes 211, the heat dissipation area and path are increased, improving heat dissipation efficiency. The principle is to utilize the meandering paths of multiple independent oil passages and serpentine tubes 211 to increase the flow path length of the coolant and the contact area with the pipe body 210, thereby improving heat exchange efficiency. The implementation effect is reflected in faster and more uniform temperature control, further improving machining accuracy and workpiece quality.

[0034] Specifically, the machine tool in this embodiment of the invention further includes a temperature sensor disposed on a first mounting surface 101, which monitors the temperature on the first mounting surface 101; a first temperature detection element and a first flow control valve are both disposed at the pipe inlet 220, the opening of the first flow control valve is adjustable, and the first temperature detection element is used to detect the temperature at the pipe inlet 220; a second temperature detection element and a second flow control valve are both disposed at the pipe outlet 230, the opening of the second flow control valve is adjustable, and the second temperature detection element is used to detect the temperature at the pipe outlet 230; a control element is connected to the temperature sensor, the first temperature detection element, the second temperature detection element, the first flow control valve, and the second flow control valve, and the control element adjusts the first flow control valve and the second flow control valve according to the temperature detected by the temperature sensor. The arrangement of the flow control valve and the temperature detection element together constitutes a dynamic response temperature control system. Temperature sensor 222 monitors the coolant temperature in real time. Once the temperature is detected to be higher than the preset value, the signal will be transmitted to the flow control valve, causing the valve to open wider and allowing more coolant to flow into the cooling oil circuit. Conversely, the coolant flow rate will be reduced to maintain the worktable body 100 within a constant temperature range, thereby effectively protecting the motor from overheating damage and ensuring that the machining accuracy is not affected by temperature changes.

[0035] Specifically, when the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to a preset difference value, and the temperature detected by the temperature sensor is within a preset temperature range, the opening of the first flow control valve and the second flow control valve is reduced; when the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to a preset difference value, and the temperature detected by the temperature sensor is greater than a preset temperature range, the first flow control valve is maintained at its current opening, and the opening of the second flow control valve is reduced; when the temperature difference between the first temperature sensor and the second temperature sensor is greater than a preset difference value, and the temperature detected by the temperature sensor is greater than a preset temperature range, the opening of both the first flow control valve and the second flow control valve is increased, and the increased opening of the first flow control valve is greater than the increased opening of the second flow control valve.

[0036] In the above embodiments, when the temperature difference measured by the first temperature sensor and the second temperature sensor does not exceed a set threshold, and the temperature detected by the temperature sensor is stable within a preset ideal temperature range, it means that the temperature distribution of the worktable is uniform and in optimal condition. At this time, the control strategy will command the first flow control valve and the second flow control valve to reduce their openings, reducing the flow of coolant to prevent overcooling and save energy consumption. If the temperature difference between the two temperature sensors is still within the preset range, but the temperature of the worktable exceeds the preset upper limit, this indicates that the overall temperature of the worktable is too high, but the temperature distribution is still relatively uniform. In this case, the control system will maintain the current opening of the first flow control valve and only reduce the opening of the second flow control valve. The logic behind this differentiated control strategy may be that, considering the first worktable 110 directly carries the workpiece to be processed, its coolant flow rate is maintained to keep the processing surface cooled, while the coolant flow rate of the second worktable 120 (which may be located closer to the heat source) is reduced to avoid unnecessary energy consumption of the cooling system. When the temperature difference shown by the temperature sensors exceeds the preset threshold, and the temperature of the worktable is higher than the preset upper limit, this means that there is a local overheating problem. To quickly restore the temperature balance of the worktable, the control system will increase the opening of the first and second flow control valves, allowing more coolant to flow. It is worth noting that the increase in the opening of the first flow control valve will be greater than that of the second flow control valve, intended to prioritize cooling of the first worktable 110, as it is in direct contact with the workpiece and has a more direct impact on machining accuracy. This application's temperature control strategy, through intelligent flow control, achieves effective cooling and temperature balance of the worktable body 100, significantly improving machine tool machining accuracy and efficiency while also saving energy and reducing equipment maintenance costs, demonstrating the advanced nature and practicality of this patented technical solution.

[0037] Specifically, such as Figure 3 As shown, the worktable body 100 of this embodiment includes a first worktable 110, with a first mounting surface 101 disposed on the first worktable 110; and a second worktable 120, with a second mounting surface 102 disposed at the end of the second worktable 120 away from the first worktable 110. The second worktable 120 is detachably connected to the first worktable 110. The worktable body 100 is divided into a first worktable 110 and a second worktable 120, each equipped with a cooling oil circuit 200. This layered design allows each worktable to be independently temperature-controlled. The first worktable 110 directly undertakes the task of fixing and processing the workpiece, while the second worktable 120 ensures a stable connection between the entire worktable body and the machine tool body. The cooling oil circuits of the two worktables work together to more comprehensively and precisely control the overall temperature of the worktable, effectively addressing the temperature gradient caused by motor heating, ensuring temperature consistency during processing, and thus improving processing accuracy.

[0038] Specifically, there are multiple cooling oil passages 200. At least one of the multiple cooling oil passages 200 is provided on the first worktable 110. The pipe body 210 is disposed within the first worktable 110, and the pipe inlet 220 and pipe outlet 230 are disposed on the surface of the second worktable 120. At least one of the multiple cooling oil passages 200 is disposed within the second worktable 110, with the pipe body 210 directly embedded in the structure of the first worktable 110. This means that the cooling oil passages and the worktable form an integrated structure, which can more directly and effectively absorb and remove the heat generated by the first worktable 110 when carrying and processing the workpiece, especially the heat of the first mounting surface 101 (i.e., the bearing surface). The combination of the material selection (FC300 casting) of the first worktable 110 and the cooling oil circuit 200 forms a composite system that can withstand mechanical loads and has good heat exchange performance, which helps to ensure the temperature stability of the first mounting surface 101.

[0039] Specifically, the machine tool also includes a third worktable, which is detachably disposed between the first worktable 110 and the second worktable 120. Multiple cooling oil passages 200 are provided. At least one of the multiple cooling oil passages 200 is provided on the first worktable 110, with the pipe body 210 disposed within the first worktable 110, and the pipe inlet 220 and pipe outlet 230 disposed on the surface of the second worktable 120. At least one of the multiple cooling oil passages 200 is provided on the second worktable 120, with the pipe body 210 disposed within the second worktable 120, and the pipe inlet 220 and pipe outlet 230 disposed on the surface of the second worktable 120. At least one of the multiple cooling oil passages 200 is provided on the third worktable, with the pipe body 210 disposed within the third worktable, and the pipe inlet 220 and pipe outlet 230 disposed on the surface of the third worktable. The design principle of introducing the third worktable is to further enhance the thermal and magnetic isolation effects, while providing more space for the cooling oil passage layout to meet more complex machining requirements. The implementation results in more precise control of the worktable temperature, reducing the impact of external environmental factors on machining accuracy, and making it suitable for precision machining under extreme conditions. Application scenarios include high-precision, high-load industrial machining environments, such as semiconductor manufacturing and optical glass processing. The process involves selecting appropriate cooling oil path distribution and worktable material based on the characteristics of the workpiece, and quickly replacing a third worktable when machining tasks change to adapt to different machining conditions.

[0040] Specifically, the worktable also includes a motor 320, which comprises a stator 322 and a mover 321. The stator 322 and mover 321 are slidably connected. The stator 322 is mounted on the base 310, and the mover 321 is mounted on the second mounting surface 102, so that the worktable body 100 is slidably connected to the machine tool body 300. The second worktable 120 is made of a non-magnetic material. The design principle of using a non-magnetic material for the second worktable is to reduce the magnetic attraction effect of the linear motor and avoid mechanical deformation and machining errors caused by it. The implementation effect is to improve the stability of the machine tool when using a linear motor and ensure that the machining accuracy is not affected by the motor's magnetic force. Granite or any non-magnetic material can be selected. When the motor 320 attracts magnets, it effectively suppresses an instantaneous attraction force of approximately 1.5T, ensuring that the air gap between the stator 322 and mover 321 during operation is within 0.03mm of deformation.

[0041] Specifically, the machine tool also includes multiple fasteners. The first worktable 110 has multiple connecting holes 111 at its end near the second worktable 120. The second worktable 120 has multiple through holes 121 corresponding to the connecting holes 111. Each fastener passes through a corresponding through hole 121 and connects to the connecting hole 111. The design principle of the fastener connection is to ensure a secure connection between the two worktables while allowing necessary disassembly and maintenance. The implementation effect is improved structural stability and maintenance convenience of the worktables, making it suitable for machine tools requiring regular inspection and cleaning. By providing multiple connecting holes 111 and through holes 121 on the first mounting surface 101 and the second mounting surface 102, the first worktable 110 and the second worktable 120 are tightly connected together, allowing the coolant in the cooling oil circuit 200 to form a uniform cooling effect on the surface of the worktable body 100. This design not only improves the heat exchange efficiency between the coolant and the worktable surface but also ensures that heat can be removed quickly and evenly, avoiding deformation caused by localized overheating. Fasteners can be threaded bolts, and the threads can be set in the connection hole 111 according to the size of the bolt.

[0042] Specifically, the machine tool body also includes a guide rail 330, which is fixedly mounted on the base 310; and a slider 340, one end of which is slidably connected to the guide rail 330, and the other end of which is fixedly connected to the second mounting surface 102, so that the worktable body 100 is slidably connected to the base 310. The sliding connection allows the worktable body 100 to move smoothly on the base 310. This design typically involves mechanical components such as guide rails and sliders, ensuring precise positioning and accurate movement trajectory of the worktable body. Especially for machining tasks requiring high-precision positioning, the smoothness and positioning accuracy of the sliding connection directly affect machining quality and efficiency. By optimizing the design and materials of the sliding connection, the overall machining performance of the machine tool can be further improved, for example, by using low-friction materials or precision-manufactured ball screw assemblies to reduce resistance and errors during movement.

[0043] The existing worktable components are extremely thin, with three horizontal and two vertical ribs and a wall thickness of 15mm. They also have too many through holes and grooves, causing sagging when the linear motor engages, resulting in extremely poor overall rigidity. Furthermore, the worktable is directly mounted above the motor 320, which generates significant heat. The linear motor mover 321, fixed to the bottom of the worktable body 100, is a high-heat component, and its mounting position hinders natural heat dissipation. The lack of spacing or transition in the design allows heat to be directly conducted to the worktable body 100. During long machining operations, the stability and accuracy of the machine tool cannot be guaranteed. The worktable body 100 of the machine tool in this application has dimensions of 650*500*60mm and a weight of 60+140=200KG. The first mounting surface 101 adopts a common T-slot design, such as... Figure 5 As shown, the multi-point fixing and flexible adjustment pads allow for quick installation and easy maintenance. The second worktable 120 has an internal cooling oil circuit 200, as shown... Figure 8 As shown, this is used to achieve internal cooling of the workbench and realize heat dissipation. The workbench body 300 adopts a two-layer design, which effectively suppresses the instantaneous suction force of about 1.5T when the motor 320 is attracted to the magnet, ensuring that the air gap is within 0.03MM deformation throughout the entire stroke.

[0044] In some embodiments, the first worktable 110 is made of FC300 casting. This material can withstand large mechanical loads and has good wear resistance, making it suitable for working conditions requiring long-term friction. Its good damping properties effectively absorb and disperse vibration energy, making it suitable for applications requiring vibration damping. Furthermore, it has good corrosion resistance, preventing the cutting fluid from the machine tool from corroding the casting. The second worktable 120 is made of granite casting. This material not only has high strength and good corrosion resistance but also excellent thermal stability. Granite has a low coefficient of thermal expansion, resulting in minimal deformation after heating, making it suitable for high-temperature environments.

[0045] After the worktable in the above embodiment is processed, the worktable is pre-assembled. The first worktable 110 and the second worktable 120 are installed together. Then, the mover 321 and the reading head are installed on the second worktable 120. Next, the guide rail 330 and the slider 340 are installed on the base 310. Then, the grating ruler is installed on the base 310. Finally, the pre-assembled worktable body 100 is connected to the slider 340. Then, connectors are connected to the pipe inlet 220 and pipe outlet 230 of the second worktable 120, as shown in the figure. Figure 7 It connects to an oil cooler with one inlet and one outlet to achieve circulating cooling. The installation effect is as follows: Figure 3 As shown.

[0046] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0047] This application achieves effective temperature control of the worktable by incorporating a cooling oil circuit 200 within the worktable body 100. This is particularly effective under prolonged machining or high-load conditions, preventing worktable deformation caused by motor overheating. Through the integration of a built-in cooling system and temperature sensor, the coolant flow rate is dynamically adjusted to ensure the worktable body 100 remains within the optimal temperature range, thereby improving machining accuracy and surface finish, and reducing tool wear.

[0048] The layered design of the worktable, especially the use of granite for the second worktable 120, effectively suppresses the magnetic attraction effect, particularly near the linear motor mover 321. This ensures the stability of the air gap between the mover 321 and stator 322 throughout the entire process, controlling the deformation within 0.03mm. This not only improves the stability of the machine tool operation but also reduces the magnetization phenomenon that may occur during machining, further extending the service life of the cutting tools.

[0049] Featuring a double-layer design, the upper worktable (FC300 casting) provides sufficient strength and wear resistance while offering excellent shock absorption, making it suitable for supporting and securing workpieces, as well as for quickly installing various fixtures and machined parts. The lower worktable (granite), combined with the cooling oil circuit 200, enhances structural rigidity and provides an efficient heat dissipation channel. Furthermore, the sliding connection between the worktable and the base ensures smoother worktable movement and more accurate positioning.

[0050] Equipped with at least one flow control valve and temperature sensor, the system automatically adjusts the coolant flow rate based on real-time feedback from the temperature sensor. This ensures maximum efficiency of the cooling system while reducing energy consumption and avoiding resource waste caused by overcooling. The intelligent temperature control strategy responds quickly to temperature changes, maintaining a stable table body temperature of 100°C, thus improving the continuity and stability of machine tool processing.

[0051] By combining precise temperature control strategies with an efficient cooling system, this application achieves effective utilization of cooling resources, avoids unnecessary circulation of excessive coolant, thereby reducing energy consumption and embodying the concepts of green manufacturing and sustainable development.

[0052] The core of the entire technical solution lies in improving processing quality and efficiency. By optimizing the structure of the worktable body 100 and the design of the cooling system, this application can significantly reduce processing errors caused by temperature and magnetic attraction effects, ensuring high precision in workpiece processing, while improving the operating efficiency of the machine tool and shortening the processing cycle.

[0053] The dual-layer design of the worktable and the integration of the cooling system reduce the need for external components, while also optimizing the connections and layout between components, making the entire cooling system more compact and easier to install and maintain. The excellent sealing and connection between the first worktable 110 and the second worktable 120, as well as between the worktable and the base, ensures the integrity and reliability of the system.

[0054] By effectively controlling temperature and magnetic attraction effects, this application reduces the risk of damage to key components such as the worktable body 100 and the linear motor mover 321, thereby extending the overall service life of the machine tool. Simultaneously, by reducing tool wear and maintenance costs, the operating costs of the entire production process are lowered.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A machine tool for carrying a workpiece to be processed, characterized in that, include: A machine tool body (300) is provided with a base (310); The workbench body (100) is disposed on the base (310). The workbench body (100) has a first mounting surface (101) and a second mounting surface (102). The first mounting surface (101) is used to support the workpiece to be processed, and the second mounting surface (102) is used to connect with the base (310). A cooling oil passage (200) is provided on the workbench body (100). The cooling oil passage (200) includes a pipe body (210), a pipe inlet (220), and a pipe outlet (230). The pipe body (210) is provided inside the workbench body (100) to contain coolant. The pipe inlet (220) and the pipe outlet (230) are provided on the surface of the workbench body (100). One end of the pipe body (210) is connected to the pipe inlet (220), and the other end of the pipe body (210) is connected to the pipe outlet (230). A circulating cooling system having an input end and an output end, the output end being connected to the liquid passage of the pipe inlet (220), and the input end being connected to the liquid passage of the pipe outlet (230), so that the coolant in the pipe body (210) circulates. A temperature sensor is disposed on the first mounting surface (101), and the temperature sensor is used to monitor the temperature on the first mounting surface (101); The first temperature sensor and the first flow control valve are both located at the inlet (220) of the pipeline. The opening of the first flow control valve is adjustable. The first temperature sensor is used to detect the temperature at the inlet (220) of the pipeline. The second temperature sensor and the second flow control valve are both located at the outlet (230) of the pipeline. The opening of the second flow control valve is adjustable. The second temperature sensor is used to detect the temperature at the outlet (230) of the pipeline. The control unit is connected to the temperature sensor, the first temperature detection element, the second temperature detection element, the first flow control valve, and the second flow control valve. The control unit adjusts the first flow control valve and the second flow control valve according to the temperature detected by the temperature sensor. When the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to a preset difference, and the temperature detected by the temperature sensor is within a preset temperature range, the opening degree of the first flow control valve and the second flow control valve is reduced. And / or, When the temperature difference between the first temperature sensor and the second temperature sensor is less than or equal to the preset difference value, and the temperature detected by the temperature sensor is greater than the preset temperature range, the first flow control valve is controlled to maintain its current opening, and the opening of the second flow control valve is reduced; and / or, When the temperature difference between the first temperature sensor and the second temperature sensor is greater than the preset difference value, and the temperature detected by the temperature sensor is greater than the preset temperature range, the opening degree of both the first flow control valve and the second flow control valve is increased, and the increased opening degree of the first flow control valve is greater than the increased opening degree of the second flow control valve.

2. The machine tool according to claim 1, characterized in that, The machine tool also includes: Multiple cooling oil passages (200), each of which has its inlet (220) connected to an outlet liquid passage and its outlet (230) connected to an input liquid passage, and / or, The pipeline body (210) includes a plurality of serpentine tubes (211), which are connected in series so that the pipeline body (210) extends along a preset direction, wherein the horizontal plane of the preset direction is parallel to the second mounting surface (102).

3. The machine tool according to claim 1, characterized in that, The workbench body (100) includes: The first workbench (110) has the first mounting surface (101) disposed on the first workbench (110); The second workbench (120) has a second mounting surface (102) located at one end of the second workbench (120) away from the first workbench (110), and the second workbench (120) is detachably connected to the first workbench (110).

4. The machine tool according to claim 3, characterized in that, The cooling oil passages (200) are multiple, and at least one of the multiple cooling oil passages (200) is provided on the first worktable (110). The pipe body (210) is disposed inside the first worktable (110), and the pipe inlet (220) and the pipe outlet (230) are disposed on the surface of the second worktable (120), and / or, The second workbench (120) is provided with at least one of the plurality of cooling oil passages (200), the pipeline body (210) is provided inside the second workbench (120), and the pipeline inlet (220) and the pipeline outlet (230) are provided on the surface of the second workbench (120).

5. The machine tool according to claim 3, characterized in that, The machine tool also includes: A third workbench is detachably disposed between the first workbench (110) and the second workbench (120), and the cooling oil passages (200) are multiple. The first workbench (110) is provided with at least one of the plurality of cooling oil passages (200), the pipe body (210) is disposed within the first workbench (110), the pipe inlet (220) and the pipe outlet (230) are disposed on the surface of the second workbench (120), and / or, The second workbench (120) is provided with at least one of the plurality of cooling oil passages (200), the pipe body (210) is provided inside the second workbench (120), and the pipe inlet (220) and the pipe outlet (230) are provided on the surface of the second workbench (120); The third workbench is provided with at least one of the multiple cooling oil passages (200), the pipeline body (210) is disposed inside the third workbench, and the pipeline inlet (220) and the pipeline outlet (230) are disposed on the surface of the third workbench.

6. The machine tool according to claim 3, characterized in that, The worktable also includes a motor (320), which includes a stator (322) and a mover (321). The stator (322) and the mover (321) are slidably connected. The stator (322) is disposed on the base (310), and the mover (321) is disposed on the second mounting surface (102), so that the worktable body (100) is slidably connected to the machine tool body (300). The second worktable (120) is made of a non-magnetic material.

7. The machine tool according to claim 3, characterized in that, The machine tool also includes a plurality of fasteners. The first worktable (110) is provided with a plurality of connecting holes (111) at one end near the second worktable (120). The second worktable (120) is provided with a plurality of through holes (121) corresponding to the plurality of connecting holes (111). Each fastener is inserted into the through hole (121) and connected to the connecting hole (111).

8. The machine tool according to claim 1, characterized in that, The machine tool body also includes: Guide rail (330), the guide rail (330) is fixedly mounted on the base (310); A slider (340) is slidably connected at one end to the guide rail (330) and fixedly connected at the other end to the second mounting surface (102) so that the workbench body (100) is slidably connected to the base (310).

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