High-precision numerical control machine tool hydrostatic guide rail and measuring device thereof

Abstract

This invention relates to the technical field of hydrostatic guide rail testing devices, and particularly to a high-precision measuring device for hydrostatic guide rails of CNC machine tools. The device includes a testing platform, comprising a base box and an experimental platform. A collection groove is formed on the upper surface of the base box, and the experimental platform is fixedly installed in the collection groove. A test rail is fixedly installed on the upper surface of the experimental platform. A movable frame is slidably mounted on the base box, and a driving component for moving the movable frame left and right is installed in the base box. An adjustable functional seat is installed at the head of the movable frame. The layout of each component is clear, operation is convenient, and installation, maintenance, and use are easy. During testing, the device can realize the left and right movement of the movable frame, the position adjustment of the oil supply pipe assembly, and pressure testing and vibration simulation testing of the hydrostatic guide rail. It can simulate various actual working conditions and comprehensively measure the steady-state performance of the hydrostatic guide rail. Temperature and pressure sensors monitor the temperature and pressure of the oil in real time.

Description

Technical Field

[0001] This invention relates to the field of hydrostatic guide rail technology, and in particular to a high-precision CNC machine tool hydrostatic guide rail and its measuring device. Background Technology

[0002] Open-type hydrostatic guideways are precision guideway systems that utilize high-pressure lubricating oil to create hydrostatic support, commonly used in high-precision machinery such as machine tools and CNC equipment. Their moving guideways (i.e., the tracks that support sliding components) typically have multiple interfaces for oil supply, control, monitoring, and maintenance. The steady-state performance of hydrostatic guideways is mainly reflected in oil film pressure distribution, flow stability, temperature variation patterns, and response characteristics under different loads and vibration conditions. In actual operation, the oil chamber pressure of the guideway fluctuates with load changes, and the oil temperature increases due to frictional losses and ambient temperature. These factors all lead to changes in oil film thickness, thus affecting the guideway's load-bearing stiffness and motion accuracy. Therefore, comprehensive and accurate measurement of the steady-state performance of hydrostatic guideways is crucial for ensuring their reliable application in equipment. Obtaining the variation patterns of parameters such as oil pressure, temperature, and flow rate under different operating conditions through measuring devices can provide data support for guideway structural optimization and oil film control strategy improvement, ultimately enhancing the overall performance of the equipment.

[0003] Currently, the industry mostly uses dedicated testing platforms to measure the performance of hydrostatic guideways, but these devices have the following significant shortcomings in practical applications: Traditional measuring devices often only allow for single-point measurements of static pressure or temperature, failing to simulate the complex conditions encountered in actual operation. For example, some devices can only test the oil film pressure of the guide rail under a fixed load, but cannot simulate the dynamic load changes of the worktable during high-speed movement, or the vibration and impact generated by cutting forces during machining. This limitation leads to discrepancies between the measured data and the actual operating conditions, making it difficult to fully reflect the steady-state performance of the guide rail.

[0004] The hydrostatic guide rails in different equipment vary significantly in structural dimensions, oil chamber layout, and installation methods. Existing measuring devices often have fixed oil supply pipe interfaces and test positions. When testing guide rails of different specifications, it is necessary to readjust the pipe connections or change the tooling fixtures, which is not only cumbersome but may also affect measurement accuracy due to assembly errors. For example, when testing small precision guide rails and large heavy-duty guide rails, the oil supply position of traditional devices cannot be flexibly adapted, leading to distortion of oil flow and pressure measurement data.

[0005] Oil leakage is a common problem during the testing of hydrostatic guide rails. Existing devices often use open tanks for oil collection, which not only easily leads to oil splashing and contaminating the workbench but also fails to achieve efficient oil recovery. This not only increases testing costs (oil waste) but may also cause environmental hazards due to improper waste oil disposal. For example, some testing platforms have poorly designed oil drainage channels, causing oil stagnation during collection, and long-term use may even lead to sludge buildup that affects the normal operation of the device.

[0006] Furthermore, existing measuring devices have low component integration, with drive systems, oil supply systems, and testing mechanisms often scattered, which not only occupies a lot of space but also leads to messy pipeline connections. When the device malfunctions (such as a stuck drive motor or blocked oil pipes), maintenance personnel need to disassemble multiple components to perform repairs, greatly reducing maintenance efficiency. Summary of the Invention

[0007] This invention solves the problems in related technologies by proposing a high-precision CNC machine tool hydrostatic guide rail and its measuring device, which addresses the issues of poor testing flexibility, cumbersome operation, and poor adaptability of existing measuring devices.

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: A high-precision CNC machine tool hydrostatic guide rail includes a motion guide rail, which comprises a track body and an oil supply main pipe. The lower end of the track body has several sets of oil chambers evenly distributed along the length of the guide rail. The oil chambers are rectangular or circular. The oil supply main pipe is installed on both sides of the track body and is sealed and fixedly connected to the track body. The track body has a main oil passage and branch oil passages corresponding to the oil chambers. One end of the main oil passage is connected to the oil supply main pipe, and the other end of the main oil passage is connected to all the branch oil passages.

[0009] By adopting the above technical solution, the motion guide rail is designed as a structure in which the rail body and two sets of oil supply main pipes cooperate. In actual use, it is convenient for both ends to be supplied with oil simultaneously. Furthermore, by opening the main oil passage and branch oil passage in the rail body, it is convenient for the oil to enter the main oil passage from the oil supply main pipe and then be distributed into the branch oil passage, and then enter the oil chamber from the branch oil passage. This facilitates the rapid formation of a uniform bearing oil film between the motion guide rail and the fixed guide rail, ensuring the stable use of the hydrostatic guide rail.

[0010] A measuring device for a high-precision CNC machine tool hydrostatic guide rail includes a test platform and a test track for placing the hydrostatic guide rail. The test platform includes a base box and an experimental platform. A collection groove is formed on the upper surface of the base box, and the experimental platform is fixedly installed in the collection groove. The test track is fixedly installed on the upper surface of the experimental platform. A movable frame is also slidably installed on the base box, and a driving component for moving the movable frame left and right is installed in the base box. An adjustable functional seat is installed at the head of the movable frame. An oil supply pump is also installed in the base box, and an oil supply pipe assembly is installed at the oil outlet of the oil supply pump. The oil supply pipe assembly is connected to the main oil supply pipe to supply oil to the oil chamber of the hydrostatic guide rail. A pressure testing component is also installed on one side of the base box, and a drive motor for rotating the pressure testing component is provided in the base box.

[0011] By adopting the above technical solution, the structural design provides a clear layout for the entire measuring device, with the test bench providing a stable support foundation for each component. By designing the test bench as a structure that combines a base box and an experimental platform, and fixing the experimental platform in the collection tank, it is possible to stably collect the test oil through the collection tank during testing on the test bench, avoiding contamination of the platform surface and oil waste. A test rail is fixedly installed on the upper surface of the experimental platform, allowing the main oil supply pipe to slide stably for testing. A movable frame is slidably installed on the base box, which can move left and right under the action of a drive component, facilitating adjustment of the measurement position. An adjustable functional seat allows for flexible adjustment of the oil supply pipe assembly position, ensuring accurate oil supply to the hydrostatic guide rail's oil chamber. The pressure testing component can be flipped under the drive of a motor, facilitating pressure testing of the hydrostatic guide rail under different operating conditions, thereby achieving real-time measurement of the steady-state performance of the hydrostatic guide rail.

[0012] As a preferred embodiment, the front end of the base box is provided with a maintenance box for mounting the drive components and drive motor. The front end of the maintenance box is provided with a flip cover. The upper end of the flip cover is rotatably connected to the maintenance box. A transparent plate that can slide up and down is installed in the flip cover. A magnetic block that attracts the flip cover is provided on the upper surface of the transparent plate. An operating wrench is also fixedly installed on the outer surface of the transparent plate.

[0013] By adopting the above technical solution, the maintenance box facilitates the installation and maintenance of drive components and drive motors. The flip-up cover can be rotated open for easy inspection of internal components. The transparent panel can slide up and down and is fixed by magnetic blocks, which protects the internal components when closed and allows observation of the internal situation through the transparent panel. The operating wrench facilitates the sliding operation of the transparent panel.

[0014] As a preferred embodiment, the upper surface of the experimental platform is provided with oil drainage slopes on all four sides, and an oil collection tank shell is inserted and installed on the front end of the platform box. The oil collection tank shell is detachably and fixedly connected to the platform box, and an oil guide pipe connected to the oil collection tank shell is provided at the lower end of the collection tank.

[0015] By adopting the above technical solution, the inclined surface of the experimental platform facilitates the drainage of excess oil into the collection tank, which then flows into the oil collection tank shell through the oil guide pipe. The oil collection tank shell is detachably and fixedly connected to the platform box, making it convenient to clean and recycle the collected oil and avoid environmental pollution caused by oil leakage.

[0016] As a preferred embodiment, the movable frame includes a sliding seat plate, a vertical plate, and a horizontal screw tube that cooperates with the driving component. The sliding seat plate is slidably installed in the maintenance box, the vertical plate is fixedly installed on the upper end face of the sliding seat plate, and the upper end face of the base box is provided with a strip groove for the sliding seat plate to be slidably installed. The horizontal screw tube is fixedly installed on the front end face of the sliding seat plate.

[0017] By adopting the above technical solution, the sliding seat plate of the movable frame slides within the maintenance box and the strip groove, ensuring the stability of the movable frame's movement. The horizontal solenoid, in conjunction with the drive component, accurately converts the power of the drive component into the linear motion of the movable frame, enabling the movable frame to move left and right on the base box.

[0018] As a preferred embodiment, the driving component includes a horizontal motor and a driving screw that cooperates with a horizontal solenoid. The horizontal motor is fixedly installed in the maintenance box, and the driving screw is horizontally installed in the maintenance box. One end of the driving screw is connected to the horizontal motor, and the other end of the driving screw is rotatably connected to the maintenance box.

[0019] By adopting the above technical solution, the driving component uses a horizontal motor to drive the drive screw to rotate. The drive screw cooperates with a horizontal solenoid tube to convert rotational motion into linear motion, thereby driving the movable frame to move left and right. This driving method has the characteristics of high transmission efficiency and high motion accuracy, and can accurately control the moving position of the movable frame.

[0020] As a preferred embodiment, the adjustable functional seat includes a telescopic frame, a vertical pipe section, and a bending hanger for mounting the oil supply pipe assembly. The telescopic frame is slidably mounted on the vertical plate section, and an electric cylinder one for driving the telescopic frame to move back and forth is mounted on the vertical plate section. The vertical pipe section is vertically fixed to the upper end face of the telescopic frame. The bending hanger is slidably mounted in the vertical pipe section, and an electric cylinder two for driving the bending hanger to rise and fall is fixedly mounted on the outer side of the vertical pipe section.

[0021] By adopting the above technical solution, the telescopic frame of the adjustable functional seat can move back and forth under the drive of electric cylinder one, and the bending hanger can be raised and lowered under the drive of electric cylinder two, realizing the position adjustment of the oil supply pipe group in the front-back and up-down directions, which can adapt to hydrostatic guide rails of different specifications and installation positions, and improve the versatility of the device.

[0022] As a preferred embodiment, the telescopic frame includes a main frame plate, side baffles, and a sliding rod slidably connected to the vertical plate. The side baffles are fixedly installed at both ends of the main frame plate, the sliding rods are fixedly installed in the middle of the main frame plate, and a connecting frame is fixedly installed at the outer end of the sliding rods. A reflective strip is affixed to the connecting frame.

[0023] By adopting the above technical solution, the main frame plate and side baffles of the telescopic frame form a stable frame structure, and the sliding rod is slidably connected to the vertical plate, ensuring the smooth movement of the telescopic frame. The reflective strips on the connecting frame facilitate observation of the telescopic frame's position in low-light environments, improving operational accuracy.

[0024] As a preferred embodiment, the oil supply pipe assembly includes an arc-shaped seat, a detection pipe head, a spiral pipe assembly, and a connecting pipe connected to the main oil supply pipe. The arc-shaped seat is fixedly installed on the head of the adjustable functional seat, the detection pipe head is fixedly installed on both ends of the arc-shaped seat, the spiral pipe assembly is connected between the oil supply pump and the detection pipe head, the connecting pipe is connected to the lower end face of the detection pipe head, and a temperature sensor and a pressure sensor are fixedly installed on the detection pipe head.

[0025] By adopting the above technical solution, the arc-shaped seat of the oil supply pipe assembly provides a stable mounting base for the detection pipe head. The detection pipe head is connected to the oil supply pump through a spiral pipe assembly to supply oil to the oil chamber of the hydrostatic guide rail. Temperature and pressure sensors can monitor the temperature and pressure of the oil in real time, providing important data for measuring the steady-state performance of the hydrostatic guide rail.

[0026] As a preferred embodiment, the pressure testing assembly includes a tilting frame, a guide frame, and a pressure seat. One end of the tilting frame is rotatably mounted in a platform box, the guide frame is fixedly mounted on the other end of the tilting frame, and the pressure seat is slidably mounted in the guide frame. A hydraulic cylinder for driving the pressure seat to move downward is fixedly mounted on the guide frame. A vibration motor is fixedly mounted in the pressure seat. The side of the platform box has a side groove for storing the tilting frame, and a protective shell for storing the guide frame and the pressure seat is installed on the outer side of the platform box. The protective shell is fixedly connected to the platform box, and a sliding baffle for shielding the protective shell is slidably mounted on the platform box.

[0027] By adopting the above technical solution, the tilting frame of the pressure testing assembly can rotate, facilitating storage when pressure testing is not required. The guide frame provides guidance for the movement of the pressure seat, and the hydraulic cylinder can drive the pressure seat to move downward, applying pressure to the hydrostatic guide rail. The vibration motor can simulate the vibration conditions in actual operation, making the test closer to actual use and improving the accuracy of the test results. The side grooves and protective shells on the side of the base box are used to store the tilting frame, guide frame, and pressure seat, respectively. The sliding cover can shield the protective shell, protecting the internal components from dust and debris, extending the service life of the components, and making the overall device neater and more aesthetically pleasing.

[0028] Compared with existing technologies, the advantages of this invention are: clear layout of components, convenient operation, and ease of installation, maintenance, and use. During testing, it enables left-right movement of the movable frame, adjustment of the oil supply pipe assembly, and pressure testing and vibration simulation testing of the hydrostatic guide rail, simulating various actual working conditions and comprehensively measuring the steady-state performance of the hydrostatic guide rail. Temperature and pressure sensors monitor the oil temperature and pressure in real time, providing accurate data support for measuring the steady-state performance of the hydrostatic guide rail. The adjustable functional seat can adapt to hydrostatic guide rails of different specifications and installation positions, improving the applicability of the device. The oil collection tank can recover excess oil, preventing oil leakage and environmental pollution, while also achieving oil recycling and reducing operating costs. Attached Figure Description

[0029] Figure 1 This is a perspective view of the overall structure in an embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows a three-dimensional view of the device when the pressure test assembly is flipped and stored. Figure 3 yes Figure 1 Side view of the device shown; Figure 4 yes Figure 1 A front view of the device shown; Figure 5 This is a perspective view of the adjustable functional seat and oil supply pipe assembly in an embodiment of the present invention. Figure 6 yes Figure 1 The diagram shows a perspective view of the device without the pressure test assembly and the flip-up cover installed. Figure 7 yes Figure 6 A front view of the device shown; Figure 8 This is a perspective view of the pressure testing component in an embodiment of the present invention; Figure 9 yes Figure 8 A front view of the device shown; Figure 10 yes Figure 8 Side view of the device shown.

[0030] In the diagram: 1. Test bench; 10. Drive unit; 100. Motion guide rail; 101. Horizontal motor; 102. Drive screw; 11. Base box; 110. Collection tank; 111. Oil collection tank shell; 112. Strip groove; 113. Side groove; 114. Protective shell; 115. Sliding baffle; 12. Experimental table; 121. Oil discharge slope; 13. Maintenance box; 14. Flip cover; 141. Transparent plate; 142. Magnetic block; 143. Operating wrench; 2. Test track; 3. Movable frame; 31. Sliding seat plate; 32. Vertical plate section; 32 0. Electric Cylinder 1; 33. Horizontal Helical Tube; 4. Adjustable Functional Seat; 41. Telescopic Frame; 411. Main Frame Plate; 412. Side Baffle; 413. Slide Rod; 414. Connecting Frame; 42. Vertical Pipe Section; 420. Electric Cylinder 2; 43. Bending Hanger; 5. Oil Supply Pipe Assembly; 51. Arc-shaped Seat; 52. Detection Pipe Head; 521. Temperature Sensor; 522. Pressure Sensor; 53. Helical Tube Assembly; 54. Connecting Pipe; 6. Pressure Testing Assembly; 60. Drive Motor; 61. Tilting Frame; 62. Guide Frame; 63. Pressure Seat; 631. Vibration Motor. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] 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.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. 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 figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] In the description of this invention, 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 generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "over," "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 "above" 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.

[0036] 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 should not be construed as limiting the scope of protection of this invention. Example

[0037] Reference Figure 1 As shown, a high-precision CNC machine tool hydrostatic guide rail includes a motion guide rail 100. The motion guide rail 100 includes a track body and an oil supply main pipe. Several sets of oil chambers are evenly distributed along the length of the guide rail at the lower end of the track body. The oil chambers are rectangular or circular. The oil supply main pipe is installed on both sides of the track body and is sealed and fixedly connected to the track body. A main oil passage and corresponding branch oil passages are provided in the track body. One end of the main oil passage is connected to the oil supply main pipe, and the other end of the main oil passage is connected to all branch oil passages. By designing the motion guide rail 100 with a structure in which the track body and two sets of oil supply main pipes cooperate, it is convenient for both ends to be supplied with oil simultaneously during actual use. Furthermore, by providing a main oil passage and branch oil passages in the track body, the oil can easily enter the main oil passage from the oil supply main pipe, then distribute to the branch oil passages, and then enter the oil chambers from the branch oil passages. This facilitates the rapid formation of a uniform bearing oil film between the motion guide rail 100 and the fixed guide rail, ensuring the stable use of the hydrostatic guide rail.

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a measuring device for a high-precision CNC machine tool hydrostatic guide rail includes a test platform 1 and a test track 2 for placing the hydrostatic guide rail. The test platform 1 includes a base box 11 and an experimental platform 12. A collection groove 110 is provided on the upper surface of the base box 11. The experimental platform 12 is fixedly installed in the collection groove 110. The test track 2 is fixedly installed on the upper surface of the experimental platform 12. A movable frame 3 is also slidably installed on the base box 11. A drive component 10 for driving the movable frame 3 to move left and right is installed in the base box 11. An adjustable functional seat 4 is installed at the head of the movable frame 3. An oil supply pump is also installed in the base box 11. An oil supply pipe assembly 5 is installed at the oil outlet of the oil supply pump. The oil supply pipe assembly 5 is connected to the main oil supply pipe to supply oil to the oil chamber of the hydrostatic guide rail. A pressure testing component 6 is also installed on one side of the base box 11. A drive motor 60 for driving the pressure testing component 6 to rotate is provided in the base box 11. This structural design provides a clear layout for the entire measuring device, with the test bench 1 offering a stable support foundation for all components. By designing the test bench 1 as a structure that integrates the base box 11 and the experimental platform 12, and fixing the experimental platform 12 in the collection tank 110, it is ensured that the test oil can be stably collected through the collection tank 110 during testing on the test bench 1, avoiding contamination of the platform surface and waste of oil. The test rail 2 is fixedly installed on the upper surface of the experimental platform 12, allowing the main oil supply pipe to slide stably for testing. The movable frame 3 is slidably installed on the base box 11, and can move left and right under the action of the drive component 10, facilitating adjustment of the measurement position. The adjustable functional seat 4 allows for flexible adjustment of the position of the oil supply pipe assembly 5, ensuring accurate oil supply to the oil chamber of the hydrostatic guide rail. The pressurization test assembly 6 can be flipped under the drive of the drive motor 60, facilitating pressurization testing of the hydrostatic guide rail under different working conditions, thereby achieving real-time measurement of the steady-state performance of the hydrostatic guide rail.

[0039] Reference Figure 2 , Figure 6 and Figure 7As shown, a maintenance box 13 for mounting the drive component 10 and drive motor 60 is provided on the front face of the base box 11. A flip cover 14 is installed on the front face of the maintenance box 13. The upper end of the flip cover 14 is rotatably connected to the maintenance box 13, and a transparent plate 141 that can slide up and down is installed in the flip cover 14. A magnetic block 142 that attracts the flip cover 14 is provided on the upper surface of the transparent plate 141, and an operating wrench 143 is fixedly installed on the outer surface of the transparent plate 141. The maintenance box 13 facilitates the installation and maintenance of the drive component 10 and drive motor 60. The flip cover 14 can be rotated open, which facilitates the inspection and maintenance of the internal components. The transparent plate 141 can slide up and down and is fixed by the magnetic block 142. It can protect the internal components when closed and can also be used to observe the internal situation through the transparent plate 141. The operating wrench 143 facilitates the sliding operation of the transparent plate 141. The experimental platform 12 has four inclined surfaces 121 for draining oil on its upper surface. An oil collection tank 111 is inserted into the front end of the platform housing 11 and is detachably and fixedly connected to the platform housing 11. An oil guide pipe connected to the oil collection tank 111 is provided at the lower end of the collection tank 110. The inclined surfaces 121 on the upper surface of the experimental platform 12 facilitate draining excess oil into the collection tank 110, which then flows into the oil collection tank 111 through the oil guide pipe. The detachable and fixed connection between the oil collection tank 111 and the platform housing 11 facilitates the cleaning and recycling of the collected oil, preventing oil leakage and environmental pollution.

[0040] Reference Figure 7 As shown, the movable frame 3 includes a sliding base plate 31, a vertical plate 32, and a horizontal screw tube 33 that cooperates with the drive component 10. The sliding base plate 31 is slidably installed in the maintenance box 13, and the vertical plate 32 is fixedly installed on the upper end face of the sliding base plate 31. The upper end face of the base box 11 has a strip groove 112 for sliding installation of the sliding base plate 31, and the horizontal screw tube 33 is fixedly installed on the front end face of the sliding base plate 31. The sliding base plate 31 of the movable frame 3 slides in the maintenance box 13 and the strip groove 112, ensuring the stability of the movement of the movable frame 3. The horizontal screw tube 33 cooperates with the drive component 10 to accurately convert the power of the drive component 10 into the linear motion of the movable frame 3, realizing the left and right movement of the movable frame 3 on the base box 11. The drive unit 10 includes a horizontal motor 101 and a drive screw 102 that cooperates with a horizontal solenoid 33. The horizontal motor 101 is fixedly installed in the maintenance box 13, and the drive screw 102 is horizontally installed in the maintenance box 13. One end of the drive screw 102 is connected to the horizontal motor 101, and the other end of the drive screw 102 is rotatably connected to the maintenance box 13. The drive unit 10 uses the horizontal motor 101 to drive the drive screw 102 to rotate. The drive screw 102 cooperates with the horizontal solenoid 33 to convert rotational motion into linear motion, thereby driving the movable frame 3 to move left and right. This drive method has the characteristics of high transmission efficiency and high motion accuracy, and can accurately control the moving position of the movable frame 3.

[0041] Reference Figure 2 , Figure 4 and Figure 5 As shown, the adjustable functional seat 4 includes a telescopic frame 41, a vertical pipe section 42, and a bending hanger 43 for mounting the oil supply pipe assembly 5. The telescopic frame 41 is slidably mounted on the vertical plate section 32, and an electric cylinder 320 for driving the telescopic frame 41 to move back and forth is mounted on the vertical plate section 32. The vertical pipe section 42 is vertically fixed to the upper end face of the telescopic frame 41. The bending hanger 43 is slidably mounted in the vertical pipe section 42, and an electric cylinder 420 for driving the bending hanger 43 to rise and fall is fixedly mounted on the outer side of the vertical pipe section 42. The telescopic frame 41 of the adjustable functional seat 4 can move back and forth under the drive of the electric cylinder 320, and the bending hanger 43 can rise and fall under the drive of the electric cylinder 420, realizing the position adjustment of the oil supply pipe assembly 5 in the front-back and vertical directions. It can adapt to hydrostatic guide rails of different specifications and installation positions, improving the versatility of the device. The telescopic frame 41 includes a main frame plate 411, side baffles 412, and a sliding rod 413 slidably connected to the vertical plate 32. The side baffles 412 are fixedly installed at both ends of the main frame plate 411, and the sliding rod 413 is fixedly installed in the middle of the main frame plate 411. A connecting frame 414 is also fixedly installed at the outer end of the sliding rod 413, and reflective strips are affixed to the connecting frame 414. The main frame plate 411 and the side baffles 412 of the telescopic frame 41 form a stable frame structure. The sliding rod 413 is slidably connected to the vertical plate 32, ensuring the smooth movement of the telescopic frame 41. The reflective strips on the connecting frame 414 facilitate observation of the position of the telescopic frame 41 in low-light environments, improving operational accuracy.

[0042] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the oil supply pipe assembly 5 includes an arc-shaped seat 51, a detection tube head 52, a spiral tube assembly 53, and a connecting pipe 54 connected to the main oil supply pipe. The arc-shaped seat 51 is fixedly installed on the head of the adjustable functional seat 4, and the detection tube head 52 is fixedly installed on both ends of the arc-shaped seat 51. The spiral tube assembly 53 connects the oil supply pump and the detection tube head 52, and the connecting pipe 54 connects to the lower end face of the detection tube head 52. A temperature sensor 521 and a pressure sensor 522 are fixedly installed on the detection tube head 52. The arc-shaped seat 51 of the oil supply pipe assembly 5 provides a stable mounting base for the detection tube head 52. The detection tube head 52 is connected to the oil supply pump through the spiral tube assembly 53 to supply oil to the oil chamber of the hydrostatic guide rail. The temperature sensor 521 and the pressure sensor 522 can monitor the temperature and pressure of the oil in real time, providing important data for measuring the steady-state performance of the hydrostatic guide rail. Example

[0043] Reference Figure 1 and Figure 2As shown, a high-precision CNC machine tool hydrostatic guide rail and its measuring device include a test bench 1, which includes a base box 11 and an experimental table 12. A collection groove 110 is provided on the upper surface of the base box 11, and the experimental table 12 is fixedly installed in the collection groove 110. A test rail 2 is fixedly installed on the upper surface of the experimental table 12. A movable frame 3 is also slidably installed on the base box 11, and a driving component 10 for driving the movable frame 3 to move left and right is installed in the base box 11. An adjustable functional seat 4 is installed at the head of the movable frame 3. An oil supply pump is also installed in the base box 11, and an oil supply pipe assembly 5 is installed at the oil outlet of the oil supply pump. The oil supply pipe assembly 5 is connected to the main oil supply pipe to supply oil to the oil chamber of the hydrostatic guide rail. A pressure testing component 6 is also installed on one side of the base box 11, and a drive motor 60 for driving the pressure testing component 6 to rotate is provided in the base box 11.

[0044] Reference Figure 8 , Figure 9 and Figure 10 As shown, the pressure testing assembly 6 includes a tilting frame 61, a guide frame 62, and a pressure seat 63. One end of the tilting frame 61 is rotatably mounted in the base box 11, and the guide frame 62 is fixedly mounted on the other end of the tilting frame 61. The pressure seat 63 is slidably mounted in the guide frame 62, and a hydraulic cylinder for driving the pressure seat 63 to move downwards is fixedly mounted on the guide frame 62. A vibration motor 631 is fixedly mounted in the pressure seat 63. The tilting frame 61 of the pressure testing assembly 6 is rotatable, making it easy to store when pressure testing is not required. The guide frame 62 provides guidance for the movement of the pressure seat 63, and the hydraulic cylinder can drive the pressure seat 63 to move downwards, applying pressure to the hydrostatic guide rail. The vibration motor 631 can simulate the vibration conditions in actual operation, making the test closer to actual use and improving the accuracy of the test results.

[0045] Reference Figure 6 and Figure 7 As shown, the side of the pedestal box 11 has a side groove 113 for housing the flipping frame 61, and a protective shell 114 for housing the guide frame 62 and the pressure seat 63 is installed on the outer surface of the pedestal box 11. The protective shell 114 is fixedly connected to the pedestal box 11, and a sliding baffle 115 is slidably installed on the pedestal box 11 to cover the protective shell 114. The side groove 113 and the protective shell 114 on the side of the pedestal box 11 are used to house the flipping frame 61, the guide frame 62 and the pressure seat 63, respectively. The sliding baffle 115 can cover the protective shell 114, protecting the internal components from dust and debris, extending the service life of the components, and making the overall device neater and more aesthetically pleasing.

[0046] Working principle: During installation, first place the pedestal box 11 in a suitable position to ensure its stability. A collection groove 110 is made on the upper surface of the pedestal box 11, and the experimental platform 12 is fixedly installed in the collection groove 110. The experimental platform 12 can be made of high-strength aluminum alloy to ensure its structural strength and stability. A test track 2 is fixedly installed on the upper surface of the experimental platform 12. The test track 2 can be made of high-precision alloy steel to ensure the accuracy of the test. An oil supply pump is installed in the pedestal box 11. The oil supply pump can be a YB-25 vane pump, which features stable flow and small pressure fluctuations. The spiral tube assembly 53 of the oil supply pipe assembly 5 is connected between the oil outlet of the oil supply pump and the test tube head 52.

[0047] The sliding seat plate 31 of the movable frame 3 is installed in the maintenance box 13 and the strip slide 112, and the horizontal solenoid 33 is fixedly installed on the front end face of the sliding seat plate 31. The horizontal motor 101 of the drive component 10 is fixedly installed in the maintenance box 13, and the drive screw 102 is horizontally installed in the maintenance box 13 and cooperates with the horizontal solenoid 33. The horizontal motor 101 can be a three-phase asynchronous motor of model Y100L-2, which has the characteristics of large starting torque and stable operation. The telescopic frame 41 is installed on the vertical plate part 32 of the movable frame 3, and an electric cylinder 320 is installed to drive the telescopic frame 41 to move back and forth. The electric cylinder 320 can be an electric push rod of model DYTZ-500, which has the characteristics of large thrust and accurate stroke control. The vertical tube part 42 is fixedly installed on the upper end face of the telescopic frame 41, and the bending hanger 43 is installed in the vertical tube part 42, and an electric cylinder 420 is installed to drive the bending hanger 43 to rise and fall. The electric cylinder 2420 can be equipped with an electric actuator of model DYTZ-300.

[0048] The arc-shaped seat 51 of the oil supply pipe assembly 5 is fixedly installed at the head of the bent hanger 43, and the detection pipe head 52 is fixedly installed at both ends of the arc-shaped seat 51. The temperature sensor 521 can be a PT100 platinum resistance temperature sensor, and the pressure sensor 522 can be a CYB-201 pressure sensor; both can accurately measure the temperature and pressure of the oil. One end of the tilting frame 61 of the pressure testing assembly 6 is rotatably installed in the base box 11, and the guide frame 62 is fixedly installed at the other end of the tilting frame 61. A hydraulic cylinder 621 is installed on the guide frame 62 to drive the pressure seat 63 downwards. The hydraulic cylinder 621 can be an HSG-80 hydraulic cylinder, which features high output force and stable operation. A vibration motor 631 is installed in the pressure seat 63. The vibration motor 631 can be a YZS-10-6 vibration motor, capable of simulating vibrations of different frequencies and amplitudes.

[0049] A maintenance box 13 is installed on the front face of the test bench 11. A flip cover 14 is installed on the front face of the maintenance box 13, and a transparent plate 141 is installed in the flip cover 14. An oil collection tank shell 111 is inserted and installed on the front face of the test bench 11, and the oil guide pipe of the collection tank 110 is connected to the oil collection tank shell 111. A side groove 113 is opened on the side of the test bench 11, and a protective shell 114 and a sliding cover 115 are installed thereto to store and protect the pressure test assembly 6.

[0050] When using the device, the main oil supply pipe is installed on the test rail 2. By adjusting the position of the movable frame 3 and the positions of the telescopic frame 41 and bending hanger 43 of the adjustable functional seat 4, the connecting pipe 54 of the oil supply pipe assembly 5 is connected to the main oil supply pipe of the static pressure guide rail. The oil supply pump is started to supply oil to the oil chamber of the static pressure guide rail. The temperature sensor 521 and pressure sensor 522 monitor the temperature and pressure of the oil in real time and transmit the data to the controller, which can be a Siemens S7-200 programmable controller for processing and display. According to the test requirements, the horizontal motor 101 is started to drive the movable frame 3 to move left and right to adjust the measurement position. When a pressure test is required, the drive motor 60 is started to flip the pressure test assembly 6 to the test position. The hydraulic cylinder 621 is started to drive the pressure seat 63 to move down and apply pressure to the static pressure guide rail. At the same time, the vibration motor 631 can be started to simulate vibration conditions. After the test is completed, the oil supply pump, horizontal motor 101, drive motor 60, hydraulic cylinder 621 and vibration motor 631 are turned off. Flip the pressure test assembly 6 and store it in the side slot 113 and protective shell 114, then close the sliding baffle 115. Regularly clean the oil in the oil collection tank shell 111 to keep the device clean.

[0051] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A high-precision CNC machine tool hydrostatic guide rail, comprising a motion guide rail (100), characterized in that: The motion guide rail (100) includes a rail body and an oil supply main pipe. Several sets of oil chambers are evenly distributed along the length of the guide rail at the lower end of the rail body. The oil chambers are rectangular or circular. The oil supply main pipe is installed on both sides of the rail body and is sealed and fixedly connected to the rail body. The rail body has a main oil passage and branch oil passages corresponding to the oil chambers. One end of the main oil passage is connected to the oil supply main pipe, and the other end of the main oil passage is connected to all the branch oil passages.

2. A measuring device for a high-precision CNC machine tool hydrostatic guide rail, comprising a test table (1) and a test track (2) for placing the hydrostatic guide rail as described in claim 1, characterized in that: The test bench (1) includes a base box (11) and an experimental table (12). A collection groove (110) is provided on the upper surface of the base box (11). The experimental table (12) is fixedly installed in the collection groove (110). The test track (2) is fixedly installed on the upper surface of the experimental table (12). A movable frame (3) is also slidably installed on the base box (11), and a device for driving the movable frame (3) to move left and right is installed in the base box (11). The drive unit (10) has an adjustable functional seat (4) installed at the head of the movable frame (3). The platform box (11) is also equipped with an oil supply pump. The oil outlet of the oil supply pump is equipped with an oil supply pipe assembly (5). The oil supply pipe assembly (5) is connected to the main oil supply pipe to supply oil to the oil chamber of the hydrostatic guide rail. The platform box (11) is also equipped with a pressure test assembly (6) on one side. The platform box (11) is also equipped with a drive motor (60) that drives the pressure test assembly (6) to rotate.

3. A measuring device for high-precision CNC machine tool hydrostatic guideways, characterized in that: The front end of the base box (11) is provided with a maintenance box (13) for mounting the drive component (10) and the drive motor (60). The front end of the maintenance box (13) is provided with a flip cover (14). The upper end of the flip cover (14) is rotatably connected to the maintenance box (13). A transparent plate (141) that can slide up and down is installed in the flip cover (14). A magnetic block (142) that attracts the flip cover (14) is provided on the upper end of the transparent plate (141). An operating wrench (143) is also fixedly installed on the outer side of the transparent plate (141).

4. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 1, characterized in that: The experimental platform (12) has four sides of the upper end face with oil drainage slopes (121). The front end face of the platform box (11) is connected to an oil collection tank shell (111). The oil collection tank shell (111) is detachably and fixedly connected to the platform box (11). The lower end of the collection tank (110) is provided with an oil guide pipe that communicates with the oil collection tank shell (111).

5. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 2, characterized in that: The movable frame (3) includes a sliding seat plate (31), a vertical plate (32), and a horizontal screw tube (33) that cooperates with the drive component (10). The sliding seat plate (31) is slidably installed in the maintenance box (13). The vertical plate (32) is fixedly installed on the upper end face of the sliding seat plate (31). The upper end face of the pedestal box (11) is provided with a strip groove (112) for the sliding seat plate (31) to be slidably installed. The horizontal screw tube (33) is fixedly installed on the front end face of the sliding seat plate (31).

6. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 4, characterized in that: The drive unit (10) includes a horizontal motor (101) and a drive screw (102) that cooperates with a horizontal solenoid (33). The horizontal motor (101) is fixedly installed in the maintenance box (13), and the drive screw (102) is horizontally installed in the maintenance box (13). One end of the drive screw (102) is connected to the horizontal motor (101), and the other end of the drive screw (102) is rotatably connected to the maintenance box (13).

7. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 4, characterized in that: The adjustable functional seat (4) includes a telescopic frame (41), a vertical pipe section (42), and a bending hanger (43) installed on the oil supply pipe assembly (5). The telescopic frame (41) is slidably installed on the vertical plate section (32), and an electric cylinder (320) is installed on the vertical plate section (32) to drive the telescopic frame (41) to move back and forth. The vertical pipe section (42) is vertically fixed on the upper end face of the telescopic frame (41). The bending hanger (43) is slidably installed in the vertical pipe section (42), and an electric cylinder (420) is fixedly installed on the outer side of the vertical pipe section (42) to drive the bending hanger (43) to rise and fall.

8. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 6, characterized in that: The telescopic frame (41) includes a main frame plate (411), side baffles (412), and a sliding rod (413) that is slidably connected to the vertical plate (32). The side baffles (412) are fixedly installed at both ends of the main frame plate (411), and the sliding rod (413) is fixedly installed in the middle of the main frame plate (411). A connecting frame (414) is also fixedly installed at the outer end of the sliding rod (413), and a reflective strip is pasted on the connecting frame (414).

9. The measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 1, characterized in that: The oil supply pipe assembly (5) includes an arc-shaped seat (51), a detection pipe head (52), a spiral pipe assembly (53), and a connecting pipe (54) connected to the main oil supply pipe. The arc-shaped seat (51) is fixedly installed at the head of the adjustable functional seat (4). The detection pipe head (52) is fixedly installed at both ends of the arc-shaped seat (51). The spiral pipe assembly (53) is connected between the oil supply pump and the detection pipe head (52). The connecting pipe (54) is connected to the lower end face of the detection pipe head (52). A temperature sensor (521) and a pressure sensor (522) are fixedly installed on the detection pipe head (52).

10. A measuring device for a high-precision CNC machine tool hydrostatic guideway according to claim 2, characterized in that: The pressure testing assembly (6) includes a tilting frame (61), a guide frame (62), and a pressure seat (63). One end of the tilting frame (61) is rotatably mounted in the base box (11), and the guide frame (62) is fixedly mounted on the other end of the tilting frame (61). The pressure seat (63) is slidably mounted in the guide frame (62), and a hydraulic cylinder (621) for driving the pressure seat (63) to move downward is fixedly mounted on the guide frame (62). 3) A vibration motor (631) is fixedly installed in the middle. The side of the platform box (11) is provided with a side groove (113) for storing the flipping frame (61). A protective shell (114) for storing the guide frame (62) and the pressure seat (63) is installed on the outer side of the platform box (11). The protective shell (114) is fixedly connected to the platform box (11), and a sliding baffle (115) for shielding the protective shell (114) is slidably installed on the platform box (11).

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