A high-speed engraving and milling machine spindle cooling mechanism

Abstract

The application discloses a high-speed engraving and milling machine spindle cooling mechanism and belongs to the spindle cooling field.The high-speed engraving and milling machine spindle cooling mechanism comprises an engraving and milling frame, a first screw rod is symmetrically arranged on the top of the engraving and milling frame and is rotatably arranged, a mounting frame is arranged on the first screw rod in a sleeving mode, a cross frame is transversely arranged between the two mounting frames, a second screw rod is rotatably arranged between the two mounting frames, a sliding frame is arranged on the second screw rod in a sleeving mode, a mounting seat is slidably arranged on the sliding frame, and a refrigeration assembly is arranged on the spindle body.The high-speed engraving and milling machine spindle cooling mechanism has the beneficial effects that the refrigeration assembly is arranged, the refrigeration assembly adopts a closed-loop circulation cooling design, the refrigeration fin and the water pump work cooperatively, the cooling liquid is continuously circulated in the flow guide channel, the heat generated by the spindle body during high-speed engraving and milling is effectively reduced, the processing precision is prevented from being reduced due to thermal deformation, and the service life of the spindle is prolonged.

Description

Technical Field

[0001] This application relates to the field of spindle cooling, and more specifically, to a spindle cooling mechanism for a high-speed engraving and milling machine. Background Technology

[0002] Currently, with the continuous development of my country's heavy industry, machine tools are producing more and more types of products with increasingly wider applications. The application scope and processing requirements of engraving and milling machine tools are also getting higher and higher. Currently, the spindles of the spindle devices on the market suffer from severe torsional losses due to structural design problems, are prone to overheating, and the processed products are prone to deformation, resulting in significant defects.

[0003] Existing high-speed CNC engraving machine spindle cooling technologies mostly rely on natural air cooling, whose efficiency is limited by multiple factors such as ambient temperature, airflow speed, and spindle speed. Natural air cooling achieves temperature reduction through convective heat transfer between the spindle surface and the surrounding air; however, air has a low thermal conductivity, resulting in limited cooling efficiency. Especially in high-speed CNC engraving scenarios, the heat generated by the spindle cannot be dissipated in time, causing the spindle temperature to continuously rise. Therefore, a high-speed CNC engraving machine spindle cooling mechanism is needed to help solve this problem. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] The purpose of this application is to address the shortcomings of existing technologies by providing a high-speed CNC engraving machine spindle cooling mechanism. This addresses the problem that current high-speed CNC engraving machine spindle cooling technologies largely rely on natural air cooling, whose heat dissipation efficiency is limited by multiple factors such as ambient temperature, airflow speed, and spindle speed. Natural air cooling achieves temperature reduction through convective heat transfer between the spindle surface and the surrounding air. However, air has a low thermal conductivity, resulting in limited heat dissipation efficiency. Especially in high-speed CNC engraving scenarios, the heat generated by the spindle cannot be dissipated in time, leading to a continuous rise in spindle temperature.

[0006] To achieve the above objectives, this application provides the following technical solution: A high-speed engraving and milling machine spindle cooling mechanism includes: an engraving and milling frame, an engraving and milling cavity inside the engraving and milling frame, a first lead screw symmetrically and rotatably arranged at the top of the engraving and milling frame, a first rotating motor that drives the first lead screw to rotate is installed on the engraving and milling frame, and an mounting bracket is sleeved on the first lead screw; A crossbeam is horizontally fixed between the two mounting brackets, and a second lead screw is rotatably arranged between the two mounting brackets. A second rotary motor that drives the second lead screw is installed on one of the mounting brackets. A sliding bracket is sleeved on the second lead screw, and a mounting seat is slidably arranged on the sliding bracket. A spindle body is installed on the mounting seat. An electric actuator that drives the position adjustment of the mounting seat is installed on the sliding bracket. A cooling component that drives the cooling of the spindle body is installed on the spindle body.

[0007] Furthermore, the cooling assembly includes a cooling box mounted on the spindle body, the cooling box having an internal cavity, a cooling plate being embedded on the side of the cooling box away from the spindle body, a fan mounted on the spindle body to drive the cooling plate's hot surface to cool, a flow guide channel being provided in a ring shape on the inner edge of the spindle body, the cooling box being connected to the flow guide channel via a flow guide pipe, a water pump being installed inside the cooling box, and the water inlet end of the flow guide pipe being installed at the water outlet end of the water pump.

[0008] Furthermore, a transparent window is embedded on one side of the refrigeration box, and an auxiliary milling cutter is installed at the bottom of the main spindle body.

[0009] Furthermore, the first lead screw passes through the mounting bracket, and the mounting bracket and the first lead screw are threaded together. The milling frame is equipped with a synchronizer that drives the two first rotating motors to open and close synchronously. The second lead screw is threaded together with the sliding frame.

[0010] Furthermore, a guide rail seat is protruding from the bottom of the mounting frame, and a guide rail is installed at the top of the milling frame. The guide rail seat is slidably engaged with the guide rail.

[0011] Furthermore, a corrugated protective sleeve for auxiliary protection is installed on the outer edge of the first lead screw on the milling frame, and a corrugated protective sleeve for auxiliary protection is installed on the outer edge of the second lead screw on the milling frame.

[0012] Furthermore, a base frame is installed at the bottom of the milling frame, and leveling knobs are installed at the four corners of the bottom of the base frame. The base frame and the leveling knobs are threaded together.

[0013] The beneficial effects of this application are as follows: by setting a cooling component, the cooling component adopts a closed-loop circulation cooling design, and the cooling plate and water pump work together to make the coolant continuously circulate in the guide channel, effectively reducing the heat generated by the spindle body during high-speed engraving and milling, avoiding thermal deformation that leads to a decrease in machining accuracy, and extending the service life of the spindle. The threaded connection between the first and second lead screws ensures positioning accuracy. Combined with the fine-tuning function of the electric actuator, it can adapt to the engraving and milling needs of workpieces of different sizes, improving processing flexibility. Through multi-axis linkage, it can realize three-dimensional motion control of the spindle body in the engraving and milling cavity, ensuring the smooth progress of subsequent engraving and milling work. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0015] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the structure when the corrugated protective sleeve is installed in this application; Figure 3 For this application Figure 1 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the spindle body after the cooling component is installed.

[0017] Figure label: 1. Milling frame; 2. Base frame; 3. Leveling knob; 4. Mounting bracket; 41. Guide rail seat; 42. Guide rail strip; 5. Cross frame; 6. First lead screw; 7. First rotary motor; 8. Corrugated protective sleeve; 9. Second rotary motor; 10. Second lead screw; 11. Sliding frame; 12. Mounting base; 13. Electric actuator; 14. Spindle body; 15. Milling cutter; 16. Cooling assembly; 17. Cooling box; 171. Transparent window; 18. Cooling element; 19. Fan; 20. Guide tube. Detailed Implementation

[0018] The following is a detailed description of a high-speed engraving and milling machine spindle cooling mechanism provided in this application, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0019] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0020] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0021] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1-4 As shown, this utility model provides a high-speed engraving and milling machine spindle cooling mechanism, including an engraving and milling frame 1, with an engraving and milling cavity inside the frame 1. A first lead screw 6 is symmetrically rotatably mounted at the top of the frame 1. A first rotary motor 7 that drives the first lead screw 6 to rotate is mounted on the frame 1. A mounting bracket 4 is sleeved on the first lead screw 6, and the first lead screw 6 passes through the mounting bracket 4. The mounting bracket 4 and the first lead screw 6 are threaded together. A synchronizer that drives the two first rotary motors 7 to open and close synchronously is mounted on the frame 1. A crossbeam 5 is horizontally fixed between the two mounting brackets 4. A second lead screw 10 is rotatably mounted between the two mounting brackets 4. A second rotary motor 9 that drives the second lead screw 10 to rotate is mounted on one mounting bracket 4. A sliding bracket 11 is sleeved on the second lead screw 10, and the second lead screw 10 and the sliding bracket 11 are threaded together. A mounting seat 12 is slidably mounted on the sliding bracket 11. A spindle body 14 is mounted on the mounting seat 12. An auxiliary engraving and milling cutter 15 is mounted at the bottom of the spindle body 14.

[0023] The threaded connection between the first lead screw 6 and the second lead screw 10 ensures positioning accuracy. Combined with the fine-tuning function of the electric actuator 13, it can adapt to the engraving and milling requirements of workpieces of different sizes, improving processing flexibility. Through multi-axis linkage, the spindle body 14 can achieve three-dimensional motion control in the engraving and milling cavity, ensuring the smooth progress of subsequent engraving and milling work.

[0024] The mounting bracket 4 has a protruding guide rail seat 41 at the bottom and a guide rail 42 at the top of the milling frame 1. The guide rail seat 41 is slidably snapped onto the guide rail 42.

[0025] The sliding engagement structure between the guide rail base 41 and the guide rail 42 enhances the stability of the movement of the mounting bracket 4 and reduces the impact of vibration on the processing quality.

[0026] The outer edge of the first lead screw 6 on the milling frame 1 is equipped with a corrugated protective sleeve 8 for auxiliary protection, and the outer edge of the second lead screw 10 on the milling frame 1 is also equipped with a corrugated protective sleeve 8 for auxiliary protection.

[0027] The corrugated protective sleeve 8 can effectively protect the first lead screw 6 and the second lead screw 10 during operation, and can prevent dust from accumulating on the device and causing problems such as ineffective transmission and adjustment during subsequent work, thereby improving the overall practicality of the device.

[0028] Furthermore, an electric actuator 13 is installed on the sliding frame 11 to adjust the position of the mounting base 12. A cooling assembly 16 is installed on the spindle body 14 to cool the spindle body 14. The cooling assembly 16 includes a cooling box 17 installed on the spindle body 14. A transparent window 171 is embedded on one side of the cooling box 17. A cavity is opened inside the cooling box 17. A cooling plate 18 is embedded on the side of the cooling box 17 away from the spindle body 14. The cooling plate 18 is of model TECI-12706, and can be used but is not limited to this model. A fan 19 is installed on the spindle body 14 to cool the hot surface of the cooling plate 18. A flow guide channel is arranged in a ring shape on the inner edge of the spindle body 14. The cooling box 17 and the flow guide channel are connected by a flow guide pipe 20. A water pump is installed inside the cooling box 17. The water inlet end of the flow guide pipe 20 is installed at the water outlet end of the water pump.

[0029] The cooling component 16 is designed with a closed-loop circulation cooling system. The cooling element 18 works in conjunction with the water pump to continuously circulate the coolant in the guide channel, effectively reducing the heat generated by the spindle body 14 during high-speed engraving and milling, avoiding thermal deformation that could lead to a decrease in machining accuracy, and extending the spindle's service life.

[0030] Furthermore, a base frame 2 is installed at the bottom of the milling frame 1, and leveling knobs 3 are installed at the four corners of the bottom of the base frame 2. The base frame 2 and the leveling knobs 3 are threaded together.

[0031] By using the leveling knob 3, Fang Baini can effectively adjust the overall level of the milling frame 1 during operation, preventing the device from shaking and ensuring the overall stability of the milling work.

[0032] Working principle: The spindle cooling mechanism of this high-speed engraving and milling machine has an engraving and milling cavity inside the engraving and milling frame 1 as the processing space. The first lead screw 6, which is symmetrically arranged at the top, is driven by the first rotating motor 7. The synchronous opening and closing of the two motors is achieved through a synchronizer, which drives the mounting frame 4 to move horizontally along the guide rail 42. The guide rail seat 41 slides and engages with the guide rail 42 to ensure positioning accuracy. The cross frame 5 fixed between the mounting frames 4 serves as a support structure. The second lead screw 10 is driven by the second rotating motor 9, which causes the sliding frame 11 to move longitudinally. In conjunction with the electric push rod 13, the mounting seat 12 is pushed to slide along the sliding frame 11, so as to achieve precise positioning of the spindle body 14 in three-dimensional space.

[0033] The cooling assembly 16 is connected to the annular flow channel on the inner edge of the spindle body 14 through the cavity inside the cooling box 17. The flow pipe 20 is driven by a water pump to circulate the liquid cooled by the cooling plate 18 in the cooling box 17 to the flow channel, forming a continuous cooling of the spindle body 14. The hot surface of the cooling plate 18 is cooled by forced convection through the fan 19. The transparent window 171 allows real-time observation of the coolant status in the cooling box 17. The engraving and milling cutter 15 is installed at the bottom of the spindle body 14 to complete the engraving and milling operation. The corrugated protective sleeve 8 covers the outer edge of the first lead screw 6 and the second lead screw 10 to prevent cutting chips from entering. The leveling knob 3 at the bottom of the base frame 2 achieves horizontal adjustment of the equipment through threaded engagement to ensure processing stability.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0035] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0036] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A high-speed engraving and milling machine spindle cooling mechanism, comprising: The milling frame (1) is characterized in that: a milling cavity is provided inside the milling frame (1), a first lead screw (6) is symmetrically rotated at the top of the milling frame (1), a first rotating motor (7) that drives the first lead screw (6) to rotate is installed on the milling frame (1), and an installation frame (4) is sleeved on the first lead screw (6). A crossbeam (5) is fixed laterally between the two mounting brackets (4). A second lead screw (10) is rotatably arranged between the two mounting brackets (4). A second rotating motor (9) that drives the second lead screw (10) to rotate is installed on one of the mounting brackets (4). A sliding bracket (11) is sleeved on the second lead screw (10). A mounting seat (12) is slidably arranged on the sliding bracket (11). A spindle body (14) is installed on the mounting seat (12). An electric push rod (13) that drives the position adjustment of the mounting seat (12) is installed on the sliding bracket (11). A cooling component (16) that drives the spindle body (14) to cool is installed on the spindle body (14).

2. The high-speed engraving and milling machine spindle cooling mechanism according to claim 1, characterized in that: The refrigeration assembly (16) includes a refrigeration box (17) installed on the spindle body (14). The refrigeration box (17) has an internal cavity. A refrigeration plate (18) is embedded on the side of the refrigeration box (17) away from the spindle body (14). A fan (19) is installed on the spindle body (14) to drive the cooling surface of the refrigeration plate (18) to cool. A flow channel is provided in a ring shape on the inner edge of the spindle body (14). The refrigeration box (17) is connected to the flow channel through a flow pipe (20). A water pump is installed inside the refrigeration box (17). The water inlet end of the flow pipe (20) is installed at the water outlet end of the water pump.

3. The high-speed engraving and milling machine spindle cooling mechanism according to claim 2, characterized in that: A transparent window (171) is embedded on one side of the refrigeration box (17), and a milling cutter (15) for auxiliary milling is installed at the bottom of the main spindle body (14).

4. The high-speed engraving and milling machine spindle cooling mechanism according to claim 3, characterized in that: The first lead screw (6) is threaded through the mounting bracket (4), and the mounting bracket (4) and the first lead screw (6) are threaded together. The milling frame (1) is equipped with a synchronizer that drives the two first rotating motors (7) to open and close synchronously. The second lead screw (10) is threaded together with the sliding frame (11).

5. The high-speed engraving and milling machine spindle cooling mechanism according to claim 4, characterized in that: The mounting bracket (4) has a protruding guide rail seat (41) at the bottom, and the milling frame (1) has a guide rail (42) at the top. The guide rail seat (41) is slidably attached to the guide rail (42).

6. The high-speed engraving and milling machine spindle cooling mechanism according to claim 5, characterized in that: A corrugated protective sleeve (8) for auxiliary protection is installed on the outer edge of the first lead screw (6) on the milling frame (1), and a corrugated protective sleeve (8) for auxiliary protection is installed on the outer edge of the second lead screw (10) on the milling frame (1).

7. The high-speed engraving and milling machine spindle cooling mechanism according to claim 1, characterized in that: The milling frame (1) is equipped with a base frame (2) at the bottom. The base frame (2) is equipped with leveling knobs (3) at the four corners of the bottom. The base frame (2) and the leveling knobs (3) are threaded together.

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