High-precision anti-rust numerical control machine tool and screw rod assembly method

Abstract

The application relates to the field of numerical control machine tools, in particular to a high-precision anti-rust numerical control machine tool and a screw rod assembling method, which comprises a base, a workbench, two moving assemblies, a driving assembly and a protective cover assembly. The base is provided with convex parts on two sides, the middle of the base is provided with a recessed part, the two moving assemblies are respectively arranged on the top surfaces of the convex parts on the two sides of the base, and the driving assembly is arranged in the recessed part of the base. The workbench is arranged on the moving assemblies and the driving assembly and moves on the base through the moving assemblies and the driving assembly. The top of the protective cover assembly is fixed to the bottom of the workbench, the bottom of the protective cover assembly is in contact with the base and moves on the base along with the workbench. The bottom of the workbench is further provided with at least two waterproof scrapers, the bottom of the waterproof scraper is in contact with the convex parts on the two sides of the base and moves on the base along with the workbench. The application has the effects of improving the operation precision of the numerical control machine tool, enhancing the anti-rust performance and prolonging the service life.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of numerical control machine tools, in particular to a high-precision anti-rust numerical control machine tool and a screw rod assembly method. BACKGROUND

[0002] As an advanced machining equipment, numerical control machine tools play an important role in modern manufacturing industry. With the improvement of industrial automation level, numerical control machine tools not only improve production efficiency, but also significantly improve the precision and quality of products. In the manufacturing process of various precision parts, the application of high-precision numerical control machine tools greatly promotes the development of fields such as aerospace, automobile manufacturing and electronics industry. However, in the actual use environment, due to the influence of factors such as cutting fluid splashing and dust pollution, the key components of the machine tool are easily corroded or worn, thereby reducing the overall performance and service life of the machine tool.

[0003] In order to solve these problems, various measures are generally taken in the industry to improve the protection ability of numerical control machine tools. For example, by adding sealing devices to reduce the entry of external pollutants, using coating technology to enhance the corrosion resistance of key components, or designing special shielding structures to prevent liquid from penetrating into the sliding rail area. In addition, some manufacturers also introduce automatic drainage systems to remove residual cutting fluid, and cooperate with multi-stage filtration units to ensure a clean working environment. Although these methods have their own advantages, the common goal is to maximize the extension of equipment operation cycle and maintain stable operation state.

[0004] However, most of the current traditional protection methods still have obvious shortcomings - they cannot effectively avoid the accumulation of a large amount of moisture and impurities under the workbench due to long-term operation. This not only accelerates the aging and damage speed of the bottom components, but also may cause safety hazards and even cause the entire system to malfunction. Therefore, it is urgent to develop a new type of efficient and reliable solution to overcome the above problems, so as to realize a more durable, safe and stable numerical control machine tool operation mode. SUMMARY

[0005] The purpose of the present application is to provide a high-precision anti-rust three-axis numerical control machine tool and a screw rod assembly method, which improves the durability and stability of the numerical control machine tool.

[0006] In a first aspect, the high-precision anti-rust three-axis numerical control machine tool provided by the present application adopts the following technical solution:

[0007] A high-precision anti-rust numerical control machine tool, comprising a base, a workbench, two moving assemblies, a driving assembly and a protective cover assembly, the base is provided with a protruding portion on both sides, a recessed portion is provided in the middle of the base, the two moving assemblies are respectively installed on the top surface of the protruding portion on both sides of the base, and the driving assembly is installed in the recessed portion of the base.

[0008] The workbench is installed on the moving assembly and the driving assembly, and moves on the base through the moving assembly and the driving assembly;

[0009] The top of the protective cover assembly is fixed with the bottom of the workbench, the bottom of the protective cover assembly is in contact with the base, and moves with the workbench on the base;

[0010] The bottom of the workbench is further provided with at least two waterproof scrapers, the bottom of the waterproof scraper is in contact with the protruding portions on both sides of the base, and moves with the workbench on the base.

[0011] By adopting the above technical scheme, the numerical control machine tool with high precision and anti-rust function is realized. The specific effects include that the combination of the protruding portions on both sides and the recessed portion in the middle of the base can effectively improve the structural stability, and at the same time, provide reasonable installation space for the moving assembly and the driving assembly. The moving assembly and the driving assembly work together to ensure that the workbench can move smoothly and accurately on the base, meeting the high-precision machining requirements. The protective cover assembly is fixedly connected with the workbench and moves with it, which plays a good protection role, prevents cutting fluid or other impurities from entering the mechanical component area, and prolongs the service life of the equipment. At least two waterproof scrapers are arranged at the bottom of the workbench and in contact with the protruding portions of the base, which can remove liquid or impurities on the protruding surface during the movement of the workbench, further enhance the anti-rust performance and keep the movement smooth, thereby improving the durability and stability of the numerical control machine tool.

[0012] Preferably, the moving assembly comprises a slide rail installed on the top surface of the protruding portion and at least two sliding blocks slidingly installed on the slide rail;

[0013] The driving assembly comprises a driving motor installed at one end of the base and a lead screw connected with the output shaft of the motor, the lead screw is installed in the recessed portion of the base, and a moving block is sleeved on the lead screw;

[0014] The bottom of the workbench is installed on the moving block and the sliding block.

[0015] By adopting the above technical scheme, the accurate movement and stable support of the workbench on the base are realized. The specific effects include that the arrangement of the slide rail and the sliding block enables the workbench to slide smoothly on the protruding portions on both sides of the base, improving the smoothness of movement and positioning accuracy. The cooperation of the motor and the lead screw can accurately control the movement distance and speed of the workbench, meeting the high-precision machining requirements. The design of the moving block sleeved on the lead screw further ensures the accurate displacement of the workbench in the longitudinal direction, enhancing the stability of the overall structure.

[0016] Preferably, one end of the lead screw is connected with the output shaft of the driving motor through a headstock, the middle part of the lead screw is connected with the moving block through a nut seat, and the other end of the lead screw is connected with the base through a tailstock.

[0017] By adopting the technical scheme, the lead screw is accurately connected with the driving motor, the moving block and the base. Specifically, one end of the lead screw is connected with the output shaft of the driving motor through a headstock, ensuring the stability and accuracy of power transmission and improving the overall operation efficiency of the machine tool; the middle part of the lead screw is connected with the moving block through a nut seat, so that the moving block can move along the lead screw accurately, thereby realizing accurate positioning of the workbench; and the other end of the lead screw is connected with the base through a tailstock, enhancing the structural stability of the entire driving system, effectively reducing errors caused by vibration or impact, and further improving the working accuracy of the numerical control machine tool.

[0018] Preferably, the protective cover assembly comprises at least a first protective cover, a second protective cover and a third protective cover which are sleeved with each other, the first protective cover is fixedly connected with the bottom of the workbench, and the third protective cover is fixedly connected with one end of the base.

[0019] By adopting the technical scheme, the protective cover assembly is composed of the first protective cover, the second protective cover and the third protective cover which are sleeved with each other, the first protective cover is fixedly connected with the bottom of the workbench, and the third protective cover is fixedly connected with one end of the base. The design makes the protective cover assembly able to stretch and shrink with the movement of the workbench, effectively covers the area below the workbench, prevents cutting fluid or other impurities from entering the interior of the machine tool, and thus improves the anti-rust performance and service life of the machine tool.

[0020] Preferably, the second protective cover is internally extended downward to form at least two moving members, the moving members are in contact with the protruding portions on both sides of the base at the bottom, and the moving members move along the protruding portions of the base following the movement of the workbench.

[0021] By adopting the technical scheme, the second protective cover in the protective cover assembly is additionally provided with the moving members which can slide along the protruding portions of the base, thereby ensuring that the protective cover assembly stably moves following the workbench. The design effectively reduces the friction between the protective cover assembly and the base, improves the motion stability, and avoids the displacement deviation of the workbench caused by the jamming of the protective cover assembly.

[0022] Preferably, the outer side of the protruding portion of the base is provided with a guide member, the bottom of the protective cover assembly is internally extended to form a guide portion, and the guide portion moves along the guide member following the movement of the workbench.

[0023] By adopting the above technical solution, the cooperation between the guide component and the guide part in this application can effectively improve the stability of the protective cover assembly during the movement of the worktable, avoiding deviation from the track due to external interference or component wear. Furthermore, compared with the commonly used method of moving the protective cover along a slide rail in the prior art, this design also helps to reduce frictional resistance, extend the service life of related components, and reduce frictional heat generation of the slide rail during the movement of the protective cover. Specifically, in this claim, the inclusion of the guide component and guide part further optimizes the overall structural layout, ensuring that the protective cover assembly always runs smoothly along the predetermined path, thereby improving the overall reliability and accuracy of the CNC machine tool.

[0024] Preferably, the contact surface between the movable component and the base is provided with a pulley.

[0025] By adopting the above technical solution, this application significantly reduces the friction between the moving parts and the base through the installation of pulleys, allowing the protective cover assembly to move more smoothly along with the worktable on the base. Simultaneously, the pulley design also helps improve stability and accuracy during movement, reducing positional deviations caused by friction. Furthermore, the pulleys effectively reduce noise generated during movement, improving the overall quietness of the equipment during operation.

[0026] Preferably, the surface of the protrusion is provided with a plurality of waterproof grooves at certain intervals.

[0027] By adopting the above technical solution, the several waterproof grooves provided on the surface of the protrusion in this application can effectively guide water flow to disperse and drain laterally, preventing water from accumulating on the surface of the protrusion. This design significantly improves the rust prevention performance of CNC machine tools and reduces equipment corrosion problems caused by water stains, thereby extending the service life of the equipment.

[0028] Preferably, the contact surface between the waterproof scraper and the base is provided with a rubber part.

[0029] By adopting the above technical solution, this application effectively enhances the sealing between the waterproof scraper and the base by setting a rubber part on the contact surface between the waterproof scraper and the base. Combined with the overall solution, this design, when used in conjunction with the waterproof groove on the surface of the base protrusion, further improves the effect of preventing moisture from entering the machine tool, thereby reducing the problem of parts rusting due to moisture corrosion and extending the service life of the equipment.

[0030] Secondly, the lead screw assembly method for a high-precision rust-proof CNC machine tool provided in this application adopts the following technical solution:

[0031] A method for assembling a lead screw in a high-precision, rust-resistant CNC machine tool, applied to the high-precision, rust-resistant CNC machine tool described in the first aspect, comprising:

[0032] Use the alignment rod to adjust the head and tail seats so that they are concentrically mounted on the base;

[0033] Install the two ends of the lead screw into the headstock and tailstock respectively, and rotate the lead screw nut to the middle of the lead screw;

[0034] By pressing the screw against the nut seat, the centers of the head seat, nut seat and tail seat are aligned in a straight line;

[0035] Install the worktable on the slider and the moving block on the nut seat;

[0036] Move the worktable above the nut seat and connect the bottom of the worktable to the moving block;

[0037] Remove the screws holding the lead screw in place to complete the lead screw assembly process.

[0038] By adopting the above technical solution, this application achieves precise assembly of the lead screw in a high-precision rust-proof CNC machine tool. Specific effects include: adjusting the headstock and tailstock with a calibrating bar to ensure concentric mounting on the base guarantees the basic accuracy of the lead screw installation, effectively avoiding instability in the worktable movement caused by positional deviations. Installing both ends of the lead screw in the headstock and tailstock respectively, and rotating the lead screw nut to the middle of the lead screw, ensures a reasonable layout of the transmission structure, improves transmission efficiency, and reduces energy loss. Using screws to hold the lead screw nut in place ensures the centers of the headstock, lead screw nut, and tailstock are aligned, further improving the straightness and stability of the lead screw system, thereby enhancing the overall machining accuracy of the machine tool. The worktable is mounted on the slider, and the moving block is mounted on the lead screw nut, constructing a complete motion transmission link, enabling the worktable to execute predetermined trajectory movements accurately and smoothly. Finally, removing the screws holding the lead screw nut completes the assembly process, restoring the system to normal operation while ensuring the accuracy of the initial positioning, simplifying the operation process while ensuring assembly quality.

[0039] In summary, this application includes at least one of the following beneficial technical effects:

[0040] 1. By setting a waterproof scraper and a protrusion with a waterproof groove, this application can effectively scrape off the moisture and impurities on the surface of the base, prevent them from accumulating under the worktable, thereby reducing the aging and damage of the bottom components and improving the service life of the machine tool.

[0041] 2. The design of the drive component combined with the moving component in this application realizes the precise and stable movement of the worktable. With the multiple protective functions of the protective cover component, it can effectively isolate cutting fluid splash and dust pollution, and protect key components from corrosion or wear.

[0042] 3. The multi-segment structure of the protective cover assembly and its guiding design with the base ensure flexibility when moving synchronously with the worktable, while also enhancing overall sealing and stability, further optimizing the working environment of the machine tool and improving the safety and reliability of the equipment.

[0043] 4. This application utilizes screws to hold the lead screw seat in place, ensuring that the centers of the headstock, lead screw seat, and tailstock are aligned in a straight line, thereby further improving the straightness and stability of the lead screw system and enhancing the overall machining accuracy of the machine tool. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the structure of the mobile component and the driving component according to an embodiment of this application;

[0046] Figure 3 This is a schematic diagram of the base structure according to an embodiment of this application;

[0047] Figure 4 This is a side view of the protective cover assembly and base structure according to an embodiment of this application;

[0048] Figure 5 This is a flowchart of the lead screw assembly method according to an embodiment of this application;

[0049] In the diagram, 1. Base; 11. Protrusion; 12. Recess; 13. Waterproof groove; 14. Guide component; 2. Worktable; 3. Moving assembly; 31. Slide rail; 32. Slider; 4. Drive assembly; 41. Drive motor; 42. Lead screw; 43. Headstock; 44. Nutstock; 45. Tailstock; 5. Protective cover assembly; 51. First protective cover; 52. Second protective cover; 53. Third protective cover; 54. Moving component; 55. Guide component; 6. Waterproof scraper; 61. Rubber component. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 The technical solutions in the embodiments of this application are clearly and completely described. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0051] The inventors of this application have discovered that although existing CNC machine tools employ various protective measures to address issues such as cutting fluid splashing and dust contamination, they still struggle to effectively prevent water and impurities from accumulating under the worktable 2 due to prolonged operation. Therefore, this application primarily adopts a high-precision, rust-proof CNC machine tool design scheme. Through a special waterproof scraper 6 and protective cover assembly 5, this problem is completely solved, achieving a more durable, safe, and stable equipment operation mode. The following is a further detailed description of this application.

[0052] This application provides a high-precision, rust-resistant CNC machine tool, see reference. Figure 1 , Figure 2 and Figure 3 The system includes a base 1, a worktable 2, two moving components 3, a drive component 4, and a protective cover assembly 5. The base 1 has protrusions 11 on both sides and a recess 12 in the middle. The two moving components 3 are respectively mounted on the top surface of the protrusions 11 on both sides of the base 1, used to support and guide the movement of the worktable 2. The drive component 4 is installed in the recess 12 of the base 1, responsible for driving the worktable 2 to move along the base 1. The top of the protective cover assembly 5 is fixedly connected to the bottom of the worktable 2, the bottom is in contact with the base 1, and it can move together with the worktable 2.

[0053] like Figure 2 As shown, the moving component 3 in this embodiment consists of a slide rail 31 and at least two sliders 32. The slide rail 31 is fixed to the top surface of the protrusion 11, and its material is usually made of wear-resistant steel or aluminum alloy to ensure high strength and durability. In some special scenarios, ceramic matrix composite materials can also be used as an alternative to further reduce the coefficient of friction. The sliders 32 need to have sufficient rigidity and stability, and common types include ball bearing type and planar contact type. The former relies on rolling friction to reduce resistance, while the latter is based on the principle of planar close contact. Both can be flexibly selected according to actual needs. The connection between the sliders 32 and the slide rail 31 is usually embedded, allowing the sliders 32 to slide smoothly on the slide rail 31.

[0054] like Figure 2As shown, the drive assembly 4 in this embodiment mainly includes a drive motor 41 mounted on one end of the base 1 and a lead screw 42 connected to its output shaft. The drive motor 41 can be either a servo motor or a stepper motor, both of which feature precise control. The lead screw 42 is a typical helical transmission mechanism that can achieve linear reciprocating motion conversion through rotation. To improve transmission efficiency, it is generally recommended to use a ball nut pair instead of a common trapezoidal thread structure. At the same time, the lead screw 42 also needs to be equipped with a corresponding moving block to bear the pressure load from above. One end of the lead screw 42 is connected to the output shaft of the drive motor 41 through a headstock 43, the middle part is connected to the moving block through a lead screw nut 44, and the other end is connected to the base 1 through a tailstock 45, forming a stable transmission system.

[0055] like Figure 1 As shown, the protective cover assembly 5 in this embodiment includes at least a first protective cover 51, a second protective cover 52, and a third protective cover 53 that are nested together. The first protective cover 51 is fixedly connected to the bottom of the worktable 2, and the third protective cover 53 is fixedly connected to one end of the base 1. The protective cover assembly 5 is mainly used to protect the guide rail. When the worktable 2 moves, it moves with the worktable 2 to ensure that the guide rail is always located inside the protective cover assembly 5. When the guide rail is long, multiple second protective covers 52 can also be nested together.

[0056] like Figure 2 As shown, the bottom of the workbench 2 in this embodiment is also provided with a plurality of waterproof scrapers 6. The bottom of the waterproof scrapers 6 contacts the protrusions 11 on both sides of the base 1 and moves with the workbench 2 on the base 1. During the movement of the workbench 2, the waterproof scrapers 6 can clean the moisture and impurities on the surface of the base 1, achieving a good anti-fouling effect. In a preferred embodiment, the contact surface between the waterproof scraper 6 and the base 1 is provided with a rubber part 61, which can improve the contact effect between the waterproof scraper 6 and the base 1, thereby improving the anti-rust effect.

[0057] like Figure 3 As shown, in this embodiment of the application, the surface of the protrusion 11 of the base 1 is provided with a plurality of waterproof grooves 13 at certain intervals. This allows water or other impurities scraped by the waterproof scraper 6 to enter the waterproof grooves 13 and be effectively guided to disperse and drain laterally, preventing water accumulation on the surface of the protrusion 11. This design significantly improves the rust prevention performance of the CNC machine tool and reduces equipment corrosion caused by water residue, thereby extending the service life of the equipment. In practical implementation, the waterproof scraper 6 is used in conjunction with the waterproof grooves 13 on the surface of the protrusion 11 of the base 1 to further improve the effect of preventing moisture from entering the machine tool, thereby reducing rusting of parts caused by moisture erosion and extending the service life of the equipment.

[0058] like Figure 4 As shown, in this embodiment, two moving parts 54 extend downward from the interior of the second protective cover 52 in the middle layer. These two moving parts 54 maintain direct contact with the protrusions 11 on both sides of the base 1 and move synchronously with the worktable 2 as its direction of travel changes. This design cleverly utilizes leverage to distribute the load pressure while also acting as a barrier to prevent external particles from invading sensitive parts of the machine body. In a preferred embodiment, the contact surface between the moving parts 54 and the base 1 is provided with pulleys, allowing the protective cover assembly 5 to move more smoothly along with the worktable 2 on the base 1.

[0059] like Figure 4 As shown, in this embodiment, a guide member 14 is provided on the outer side of the protrusion 11 of the base 1, and a guide portion 55 extends inward from the bottom of the protective cover assembly 5. The guide portion 55 moves along the guide member 14 following the worktable 2. This avoids deviation from the track due to external interference or component wear. Furthermore, compared to the commonly used method of moving the protective cover along the slide rail 31 in the prior art, this design also helps reduce frictional resistance, extend the service life of related components, and reduce frictional heat generation of the slide rail 31 during the movement of the protective cover. The guide member 14 and guide portion 55 further optimize the overall structural layout, ensuring that the protective cover assembly 5 always runs smoothly along the predetermined path, thereby improving the overall reliability and accuracy of the CNC machine tool.

[0060] The implementation principle of this embodiment is as follows: The base 1 is designed with protrusions 11 on both sides and a recessed part 12 in the middle, which can effectively improve the structural stability and provide reasonable installation space for the moving component 3 and the drive component 4. The moving component 3 and the drive component 4 work together to ensure that the worktable 2 can move smoothly and accurately on the base 1, meeting the requirements of high-precision machining. The protective cover component 5 is fixedly connected to the worktable 2 and moves with it, providing good protection and preventing cutting fluid or other impurities from entering the mechanical parts area, thus extending the service life of the equipment. At least two waterproof scrapers 6 are set at the bottom of the worktable 2 and contact the protrusions 11 of the base 1. During the movement of the worktable 2, they can remove liquids or debris from the protruding surface, further enhancing the anti-rust performance and maintaining smooth movement, thereby improving the durability and stability of the CNC machine tool.

[0061] Since the lead screw 42 assembly typically involves a three-point connection between the headstock 43, the nut 44, and the tailstock 45, ensuring these three points are aligned in a straight line is a common problem. Most current assembly methods involve using a guide bar to align the headstock 43 and tailstock 45 at both ends, making them coaxial (two points in a line), and then screwing the nut 44 in place. However, this presents a problem: because the lead screw 42 has spans at both ends and carries weight, it tends to sag. Typically, a 1-meter-long lead screw 42 will sag by about 1.5 millimeters in the middle, affecting the machine tool's accuracy and tool marks. Therefore, this application also provides a method for assembling the lead screw 42 in a high-precision, rust-resistant CNC machine tool, referring to... Figure 5 The specific steps are as follows:

[0062] S1. Use a calibration rod to adjust the head seat 43 and tail seat 45 so that the head seat 43 and tail seat 45 are concentrically installed on the base 1.

[0063] Specifically, using the existing lead screw 42 assembly method, a calibrating bar is used to calibrate the head seat 43 and the tail seat 45 to make the two points concentric.

[0064] S2. Install both ends of the lead screw 42 into the headstock 43 and tailstock 45 respectively, and rotate the lead screw nut 44 to the middle of the lead screw 42.

[0065] Specifically, install the lead screw 42 and rotate the lead screw nut 44 to the middle position on the lead screw 42.

[0066] S3. Secure the nut seat 44 with a screw so that the centers of the head seat 43, the nut seat 44, and the tail seat 45 are aligned in a straight line.

[0067] Specifically, use a screw to hold the nut seat 44 in place, and use a dial indicator to ensure that the head seat 43, nut seat 44, and tail seat 45 of the lead screw 42 are aligned in a straight line.

[0068] S4. Install the worktable 2 on the slider 32 and the moving block on the nut seat 44.

[0069] Specifically, connect the slider 32 with screws, install the worktable 2, and adjust the angle of the worktable 2 to a right angle.

[0070] S5. Move the worktable 2 above the nut seat 44 and connect the bottom of the worktable 2 to the moving block.

[0071] Specifically, move the worktable 2 to the nut position and connect the nut seat 44 with screws.

[0072] S6. Remove the screws that hold the lead screw seat 44 in place to complete the assembly process of the lead screw 42.

[0073] Specifically, after installation, simply remove the screws that hold the nut seat 44 in place. This will ensure that the head seat 43, nut seat 44, and tail seat 45 are in a straight line.

[0074] The implementation principle of this embodiment is as follows: It achieves precise assembly of the lead screw 42 in a high-precision, rust-proof CNC machine tool. Specific effects include: adjusting the headstock 43 and tailstock 45 with a calibration bar to ensure concentric mounting on the base 1, guaranteeing the basic accuracy of the lead screw 42 installation and effectively avoiding instability in the worktable 2 caused by positional deviations. Installing both ends of the lead screw 42 into the headstock 43 and tailstock 45 respectively, and rotating the lead screw nut 44 to the middle of the lead screw 42, ensures a reasonable layout of the transmission structure, improves transmission efficiency, and reduces energy loss. Using screws to hold the lead screw nut 44 in place ensures that the centers of the headstock 43, lead screw nut 44, and tailstock 45 are aligned, further improving the straightness and stability of the lead screw 42 system, thereby enhancing the overall machining accuracy of the machine tool. The worktable 2 is mounted on the slider 32, and the moving block is mounted on the lead screw nut 44, constructing a complete motion transmission link, enabling the worktable 2 to execute predetermined trajectory movements accurately and smoothly. Finally, the screws holding the nut 44 in place are removed to complete the assembly process. This restores the system to normal operation while ensuring the accuracy of the initial positioning. This simplifies the operation process and ensures the quality of the assembly.

[0075] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision rust-preventive numerical control machine tool, characterized by comprising: The utility model provides a kind of movable workbench, including base (1), workbench (2), two moving assemblies (3), drive assembly (4) and protective cover assembly (5), the base (1) both sides is equipped with protruding part (11), the base (1) middle is equipped with recess (12), the two moving assemblies (3) are respectively installed in the protruding part (11) top surface of the base (1) both sides, the drive assembly (4) is installed in the recess (12) of the base (1); The workbench (2) is installed on the moving assembly (3) and drive assembly (4), and moves on the base (1) by moving assembly (3) and drive assembly (4); The protective cover assembly (5) top is fixed with the workbench (2) bottom, the protective cover assembly (5) bottom is in contact with the base (1), and it follows the workbench (2) and moves on the base (1); The workbench (2) bottom is also equipped with at least two waterproof scrapers (6), and the waterproof scraper (6) bottom is in contact with the protruding part (11) of the base (1) both sides, and it follows the workbench (2) and moves on the base (1); The protruding part (11) surface is transversely provided with a plurality of waterproof grooves (13); The waterproof scraper (6) is used for scraping liquid or sundries into the waterproof groove (13); The moving assembly (3) includes slide rail (31) installed on the top surface of the protruding part (11) and at least two sliding blocks (32) slidably installed on the slide rail (31); The drive assembly (4) includes drive motor (41) installed on one end of the base (1) and screw rod (42) connected with motor output shaft, the screw rod (42) is installed in the recess (12) of the base (1), and the moving block is sleeved on the screw rod (42); The bottom of the workbench (2) is installed on the moving block and sliding block (32); One end of the screw rod (42) is connected with the output shaft of the drive motor (41) through the headstock (43), the middle part of the screw rod (42) is connected with the moving block through the nut seat (44), and the other end of the screw rod (42) is connected with the base (1) through the tailstock (45); The assembly method of the screw rod (42) is as follows: Adjust the headstock (43) and the tailstock (45) with a gauge bar, so that the headstock (43) and the tailstock (45) are concentrically installed on the base (1); Install both ends of the screw rod (42) in the headstock (43) and the tailstock (45) respectively, and turn the nut seat (44) to the middle part of the screw rod (42); Make the centers of the headstock (43), the nut seat (44) and the tailstock (45) lie on a straight line by screwing the nut seat (44); Install the workbench (2) on the sliding block (32), and install the moving block on the nut seat (44); Move the workbench (2) above the nut seat (44), and connect the bottom of the workbench (2) with the moving block; Remove the screw that presses the nut seat (44), and complete the assembly process of the screw rod (42).

2. The high-precision rust-proof CNC machine tool according to claim 1, characterized in that, The protective cover assembly (5) comprises a first protective cover (51), a second protective cover (52) and a third protective cover (53) which are sleeved with each other, the first protective cover (51) is fixedly connected with the bottom of the workbench (2), and the third protective cover (53) is fixedly connected with one end of the base (1).

3. The high-precision rust-proof CNC machine tool according to claim 2, characterized in that, The second protective cover (52) is internally extended downward to form at least two moving parts (54), the moving parts (54) are in contact with the protruding parts (11) on both sides of the base (1) at the bottom, and the moving parts (54) move along the protruding parts (11) of the base (1) following the workbench (2).

4. The high-precision rust-proof CNC machine tool according to claim 3, characterized in that, The outer side of the protruding part (11) of the base (1) is provided with a guide part (14), the bottom of the protective cover assembly (5) is extended inward to form a guide part (55), and the guide part (55) moves along the guide part (14) following the workbench (2).

5. The high-precision rust-proof CNC machine tool according to claim 3, characterized in that, The contact surface of the moving part (54) and the base (1) is provided with a pulley.

6. A high-precision rust-proof CNC machine tool according to any one of claims 1-5, characterized in that, The contact surface of the waterproof scraper (6) and the base (1) is provided with a rubber part (61).

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