Intelligent static pressure rotary table with self-adaptive anti-inclination capability

Abstract

An inner ring oil pad, a middle ring oil pad and an outer ring oil pad are arranged on a base from outside to inside, the volume of the inner ring oil pad, the volume of the middle ring oil pad and the volume of the outer ring oil pad are sequentially increased, the height and the width of the oil sealing edge of each oil pad are gradually decreased from outside to inside, and the adjacent inner ring oil pad, the adjacent middle ring oil pad and the adjacent outer ring oil pad form an oil pad set. A first-level oil supply chamber, a second-level oil supply chamber and a third-level oil supply chamber are arranged on the base, the first-level oil supply chamber is connected with the second-level oil supply chambers respectively, the output of each second-level oil supply chamber is divided into six branches, the first branch, the second branch and the third branch are connected with the three third-level oil supply chambers respectively, and the third branch is connected with the third-level oil supply chambers. The fourth branch, the fifth branch and the sixth branch are respectively connected with three oil pads in one oil pad group, and each three-stage oil supply chamber is connected with a second oil supply hole of one oil pad; the three oil pads form a bearing capacity gradient which is gradually increased from inside to outside, the rigidity of an oil film gradually changes in the radial direction, self-adaptive pressure distribution is formed under the action of inclined loads, and the overturning moment is automatically compensated.

Description

Technical Field

[0001] This invention belongs to the field of precision mechanics and hydrostatic technology, and specifically relates to an intelligent hydrostatic turntable with adaptive anti-tilt capability, which is suitable for applications requiring high-precision rotary supports such as precision machining equipment, measuring instruments, and aerospace equipment. Background Technology

[0002] Hydrostatic turntables are precision rotating devices that utilize the principle of hydrostatic pressure to achieve contactless support, and are widely used in precision machining, metrology, inertial navigation, and other fields. Traditional hydrostatic turntables mainly suffer from insufficient anti-overturning capacity due to the following reasons: 1. The oil pads in traditional hydrostatic turntables are often uniformly distributed in a circular or rectangular shape, which easily tilts under eccentric loads, leading to uneven oil film thickness, reduced load-bearing capacity, and even contact friction between the turntable surface and the base. 2. Traditional hydrostatic support turntables typically use fixed oil supply chambers, resulting in overall pressure variation and difficulty in precisely controlling the support effect. 3. Traditional hydrostatic turntables have large oil supply chamber volumes, leading to slow and coarse responses to changes in pressure. This makes them unable to quickly adapt to load changes and results in poor dynamic performance. 4. Traditional hydrostatic turntables have simple oil supply chamber structures. Existing turntable support systems often use fixed, single-layer oil supply chambers, which can only passively adjust pressure under dynamic loads, unable to finely adjust the support pressure, thus limiting the stability and reliability of the hydrostatic support system. 5. Traditional hydrostatic turntables have a low level of intelligence. The hydrostatic support turntable system lacks the ability to monitor in real time under different support conditions and to adapt to different loads. Its support structure cannot change the support effect according to different load conditions, making it difficult to meet the multi-load working conditions and intelligent requirements of today's high-end equipment.

[0003] Currently, hydrostatic lubrication is widely used in industrial production and daily life, offering good lubrication and stable support. However, existing hydrostatic lubrication support technologies still suffer from several problems, such as the inability to effectively resist tilting and the inability to promptly adjust and intelligently modify the support effect for stable lubrication. For example, a hydrostatic turntable device disclosed in patent application CN202411888404.9 aims to use hydrostatic lubrication to lubricate and support the turntable structure, but it cannot effectively guarantee the support effect under overturning torque, promptly adjust the support effect, control the oil temperature, or achieve stable lubrication. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of traditional hydrostatic turntables and hydrostatic lubrication technology, and to provide an intelligent hydrostatic turntable with adaptive anti-tilt capability. Through innovative oil pad structure, distributed oil chamber system, fast response mechanism and intelligent control strategy, it achieves comprehensive performance improvement in high load-bearing capacity, strong anti-tilt capability, fast response and intelligence.

[0005] To achieve the above objectives, the present invention provides an intelligent hydrostatic rotary table with adaptive anti-tilt capability, employing the following technical solution: Its top is a platform, and its bottom is a base. The top surface of the base has multiple oil pad cavities for installing oil pads, with one oil pad installed in each cavity. The base has three types of oil pads from the outside in: an inner ring oil pad, a middle ring oil pad, and an outer ring oil pad. The number of these three types of oil pads is the same, and their volumes increase sequentially. Each type of oil pad consists of a bottom surface and a sealing edge. The height and width of the sealing edge gradually decrease from the outside in. The inner ring oil pad is elliptical, with its minor axis coinciding with its radius and its major axis pointing tangentially. The middle and outer ring oil pads are waist-shaped, with their major axes pointing tangentially and their central minor axis coinciding with their radius. The inner and outer rings of the waist-shaped pads are concentric arcs. The inner ring, middle ring, and outer ring oil pads are arranged in a series of circular arcs. The pads form a set of oil pads. The base is equipped with primary, secondary, and tertiary oil supply chambers with volumes decreasing from large to small. There is one primary oil supply chamber, the number of secondary oil supply chambers is the same as the number of oil pad sets, and the number of tertiary oil supply chambers is the same as the number of oil pads. The primary oil supply chambers are connected to each secondary oil supply chamber through pipelines. The output of each secondary oil supply chamber is divided into six branches. The first, second, and third branches are connected to three tertiary oil supply chambers through corresponding pipelines. The fourth, fifth, and sixth branches are connected to three oil pads in a set of oil pads through corresponding pipelines. Each oil pad has two oil supply holes on its bottom surface. The first oil supply hole is supplied by the secondary oil supply chamber. Each tertiary oil supply chamber is connected to the second oil supply hole of an oil pad, and the second oil supply hole is supplied by the tertiary oil supply chamber.

[0006] The primary oil supply chamber acts as a buffer pool for the total hydraulic power source, performing macroscopic pressure regulation. The secondary oil supply chamber integrates a piezoelectric adjustment mechanism to perform regional flow distribution and dynamic adjustment for load changes within the zone. The tertiary oil supply chamber performs millisecond-level fine-tuning of the support state of individual oil pads.

[0007] The significant technical effect of this invention after adopting the above technical solution is as follows:

[0008] 1. The intelligent hydrostatic turntable of this invention adopts a circular geometry that differs from traditional oil pads. The innovative design of the oil pad geometry and its more reasonable distribution features, with the short axis pointing radially towards the turntable and the long axis arranged circumferentially, and the oil pad sealing edge adopting a variable size design, with the wider sealing edge on the radial outer side of the turntable after fixing being located on the radial inner side, forming an asymmetrical stiffness distribution. This design makes the oil pad have higher anti-tilting stiffness in the radial direction, effectively resisting the overturning moment caused by eccentric loads, and can optimize the support effect against the overturning moment that causes tilting.

[0009] 2. The intelligent hydrostatic turntable of this invention has three types of oil pads between the table surface and the base. The outer ring oil pad has the largest area, followed by the middle ring, and the inner ring has the smallest area, forming a load-bearing capacity gradient that increases from the inside to the outside.

[0010] 3. In the intelligent hydrostatic turntable of the present invention, the sealing edge depth of each oil pad decreases in a stepped manner from the outside to the inside radial direction, and the depth of the intermediate transition zone changes linearly. This design makes the oil film stiffness gradually change in the radial direction, and can form an adaptive pressure distribution under the action of tilting load, automatically compensating for the overturning moment.

[0011] 4. The oil chamber structure in the intelligent hydrostatic turntable of this invention adopts a side cross-section design, which enables the oil film stiffness to be evenly distributed. Its variable cross-section oil chamber can achieve higher oil film stiffness in the shallow oil chamber area when the bearing is tilted, which can generate greater support force to restore stable support. At the same time, an oil supply route is set at the bottom of the oil chamber, so that the pressure oil can be quickly and evenly distributed, avoiding local pressure fluctuations. This structural design greatly improves the anti-tilting stiffness of the bearing, while maintaining good damping characteristics and effectively suppressing vibration.

[0012] 5. The intelligent hydrostatic rotary table of this invention has a more optimized structure, faster response, and is a new type of hydrostatic rotary table with intelligent control, which can meet the increasingly higher performance requirements in the field of precision equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure assembly of an intelligent hydrostatic turntable with adaptive anti-tilt capability according to the present invention.

[0014] Figure 2 for Figure 1 Top view of the base;

[0015] Figure 3 for Figure 2 Sectional view of the middle base along AA;

[0016] Figure 4 for Figure 1 A schematic diagram of the connection structure of a three-stage oil supply chamber for supplying oil to a set of oil supply holes;

[0017] Figure 5 for Figure 1A magnified top view of one of the inner ring oil pads;

[0018] Figure 6 for Figure 5 BB section view;

[0019] Figure 7 for Figure 1 A magnified top view of the center oil pad;

[0020] Figure 8 for Figure 7 CC section view;

[0021] Figure 9 for Figure 1 A magnified top view of one of the outer ring oil pads;

[0022] Figure 10 for Figure 8 Enlarged view of part E in the image:

[0023] Figure 11 This is a schematic diagram of the oil circuit connection structure of the present invention. Only one secondary oil supply chamber, three oil supply chambers and corresponding oil supply holes are shown, and other oil supply chambers and oil supply holes are omitted.

[0024] In the diagram: 1. Tabletop; 2. Inner ring oil pad; 3. Middle ring oil pad; 4. Outer ring oil pad; 5. Base;

[0025] D1. Inner ring oil pad cavity; D2. Middle ring oil pad cavity; D3. Outer ring oil pad cavity;

[0026] Y1. Primary fuel supply chamber; Y2. Secondary fuel supply chamber; Y3. Tertiary fuel supply chamber; Y3-1. Tertiary fuel supply chamber; Y3-2. Tertiary fuel supply chamber; Y3-3. Tertiary fuel supply chamber;

[0027] G1-1. First inner ring oil gasket oil supply hole; G2-1. Second inner ring oil gasket oil supply hole; G1-2. First middle ring oil gasket oil supply hole; G2-2. Second middle ring oil gasket oil supply hole; G1-3. First outer ring oil gasket oil supply hole; G2-3. Second outer ring oil gasket oil supply hole;

[0028] F. Throttle valve and sensor; F1-1. Inner ring wide oil sealing edge; F2-1. Inner ring narrow oil sealing edge; F1-2. Middle ring wide oil sealing edge; F2-2. Middle ring narrow oil sealing edge; F1-3. Outer ring wide oil sealing edge; F2-3. Outer ring narrow oil sealing edge;

[0029] XC. Solenoid valve; XG. Pressure relief oil cover;

[0030] S1. Oil tank; S2. Oil pump; S3. Relief valve; S4. First pressure sensor; S4-1. Second pressure sensor; S4-2. Third pressure sensor; S4-3. Fourth pressure sensor; S5. Check valve; S6. First throttle valve; S6-1. Second throttle valve; S6-2. Third throttle valve; S6-3. Fourth throttle valve. Detailed Implementation

[0031] like Figure 1 and Figure 2 This invention discloses an intelligent hydrostatic turntable with adaptive anti-tilt capability, comprising a table surface 1, a base 5, and oil pads. The top of the hydrostatic turntable is the table surface 1, the bottom is the base 5, and multiple oil pads are located between the table surface 1 and the base 5. The central axes of the table surface 1 and the base 5 are collinear, which is also the central axis of the turntable.

[0032] The top surface of the base 5 is provided with multiple oil pad cavities, which are used to install oil pads, with one oil pad installed in each cavity. Depending on the distance from the turntable's central axis to the outer edge of the base 5, the oil pad cavities consist of three types: an inner ring oil pad cavity D1, a middle ring oil pad cavity D2, and an outer ring oil pad cavity D3. The oil pads consist of three types: an inner ring oil pad 2, a middle ring oil pad 3, and an outer ring oil pad 4. The inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 are installed one-to-one in their respective inner ring oil pad cavities D1, middle ring oil pad cavities D2, and outer ring oil pad cavities D3. From the outer edge of the base 5 to the turntable's central axis, from the outside in, there are multiple inner ring oil pads 2, multiple middle ring oil pads 3, and multiple outer ring oil pads 4. The distance from the center of the inner ring oil pad 2 to the central axis of the turntable is less than the distance from the center of the middle ring oil pad 3 to the axis of the turntable. The distance from the center of the middle ring oil pad 3 to the axis of the turntable is less than the distance from the center of the outer ring oil pad 4 to the axis of the turntable. The volumes of the inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 increase sequentially. The transverse cross-sectional area of ​​the inner ring oil pad 2 is smaller than that of the middle ring oil pad 3, and its volume is smaller. Similarly, the transverse cross-sectional area of ​​the middle ring oil pad 4 is smaller than that of the outer ring oil pad 3, and its volume is smaller. In other words, as the radial distance of the turntable increases, the transverse cross-sectional area and volume of the oil pads also increase, forming a gradually changing support system.

[0033] The number of inner ring oil pads 2, middle ring oil pads 3, and outer ring oil pads 4 is the same. The closest adjacent inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 form a group of oil pads. The total number of oil pad groups in this invention is n, typically 4-8 groups. The line connecting the center of the inner ring oil pad 2 to the axis of the base 5 in each group coincides with the line connecting the center of the outer ring oil pad 4 to the axis of the base 5. Within each oil pad group, there is a certain angle between the line connecting the center of the inner ring oil pad 2 to the center of the turntable and the line connecting the center of the middle ring oil pad 3 to the axis of the base 5; they are not collinear. Similarly, there is a certain angle between the line connecting the center of the middle ring oil pad 3 to the axis of the base 5 and the line connecting the center of the outer ring oil pad 4 to the axis of the base 5; they are not collinear. The angles between the oil pads are determined by the actual number of oil pad groups n, meaning all oil pad groups are evenly distributed along the circumference on the top surface of the base 5. The distribution angle of each oil pad group is X, where X = 360 / n.

[0034] The inner ring oil pad 2 is elliptical in shape, with its minor axis coinciding with the radius and its major axis pointing tangentially. The middle ring oil pad 3 and the outer ring oil pad 4 are oblong in shape, consistent with the distribution pattern of the inner ring oil pad 2. Their major axes point tangentially, and their central minor axis coincides with the radius. The inner and outer rings of the oblong shape are concentric arcs. The maximum outer diameter of the inner ring oil pad 2 is smaller than the minimum inner diameter of the middle ring oil pad 3; that is, the distance from the outermost point of the inner ring oil pad 2 to the axis of the base 5 is smaller than the distance from the innermost point of the middle ring oil pad 3 to the axis of the base 5. The maximum outer diameter of the middle ring oil pad 3 is larger than the minimum inner diameter of the outer ring oil pad 4 but smaller than the distance from the center of the outer ring oil pad 4 to the axis of the base 5; that is, the distance from the outermost point of the middle ring oil pad 3 to the axis of the base 5 is larger than the distance from the innermost point of the outer ring oil pad 4 to the axis of the base 5.

[0035] like Figure 2 and Figure 3The base 5 has three levels of oil supply chambers of different sizes. The largest oil supply chamber is the primary oil supply chamber Y1, followed by the secondary oil supply chamber Y2, and the smallest oil supply chamber is the tertiary oil supply chamber Y3, with the volume decreasing from largest to smallest. There is one primary oil supply chamber Y1. The number of secondary oil supply chambers Y2 is the same as the total number of oil pad groups n. The number of tertiary oil supply chambers Y3 is the same as the number of oil pad chambers and oil pads. The primary oil supply chamber Y1 is located in the center of the base 5. The primary oil supply chamber Y1 is connected to each secondary oil supply chamber Y2 through pipelines, and each secondary oil supply chamber Y2 is directly supplied with oil by the primary oil supply chamber Y1. The output of each secondary oil supply chamber Y2 is divided into six branches. The first, second, and third branches are connected to three tertiary oil supply chambers Y3 through corresponding pipelines. The fourth, fifth, and sixth branches are connected to the three oil pad cavities corresponding to a set of oil pads, namely the inner ring oil pad cavity D1, the middle ring oil pad cavity D2, and the outer ring oil pad cavity D3, respectively, through corresponding pipelines. In other words, the secondary oil supply chamber Y2 is directly connected to each oil pad cavity. Each tertiary oil supply chamber Y3 is directly connected to each oil pad cavity through a pipeline. In this way, the primary oil supply chamber Y1, the secondary oil supply chamber Y2, and the tertiary oil supply chamber Y3 supply oil to the lower level in sequence. Each oil pad cavity is supplied with oil by both the tertiary oil supply chamber Y3 and the secondary oil supply chamber Y2. That is, for the oil supply of an oil pad cavity, the first method is supply from the secondary oil supply chamber Y2, and the second method is supply from the tertiary oil supply chamber Y3.

[0036] like Figure 4 The oil supply structure of one set of oil pads shown has a primary oil supply chamber Y1 connected to a secondary oil supply chamber Y2 via a pipeline. A throttle valve and a sensor F are installed on the pipeline. The secondary oil supply chamber Y2 is connected to three tertiary oil supply chambers Y3 via pipelines. These three tertiary oil supply chambers Y3 are: Y3-1 connected to the inner ring oil pad chamber D1, Y3-3 connected to the middle ring oil pad chamber D2, and Y3-2 connected to the outer ring oil pad chamber D3.

[0037] like Figure 5 and Figure 6The inner ring oil pad 2 shown consists of a bottom surface and an oil-sealing edge. The bottom surface is elliptical, and the oil-sealing edge is the vertical wall surrounding the bottom edge. The inner ring oil pad 2 is radially divided into an inner half and an outer half, with the major axis as the boundary. The height and width of the inner and outer halves are different. The height of the oil-sealing edge is its vertical dimension, while the width is its horizontal dimension. During installation, the wider oil-sealing edge, i.e., the inner ring wide oil-sealing edge F1-1, is installed on the radially outer side, and the narrower oil-sealing edge, i.e., the inner ring narrow oil-sealing edge F2-1, is installed on the radially inner side. The oil-sealing edge with the higher height is the inner ring wide oil-sealing edge F1-1, and the one with the lower height is the inner ring narrow oil-sealing edge F2-1. That is, the inner ring wide oil-sealing edge F1-1 in the outer half is both wider and taller than the inner ring narrow oil-sealing edge F2-1.

[0038] The inner ring oil pad 2 has two oil supply holes on its bottom surface and a pressure relief structure X-1, which is located on the short axis of the inner ring oil pad 2. The two oil supply holes are the first inner ring oil pad oil supply hole G1-1 and the second inner ring oil pad oil supply hole G2-1. The first inner ring oil pad oil supply hole G1-1 is located on the short axis of the inner ring oil pad 2, that is, in the diametrical direction, and is supplied with hydraulic oil by the secondary oil supply chamber Y2. The second inner ring oil pad oil supply hole G2-1 is located on the long axis of the inner ring oil pad 2 and is directly supplied with oil by the tertiary oil supply chamber Y3.

[0039] like Figure 7 and Figure 8 The shown middle ring oil pad 3 also consists of a bottom surface and an oil-sealing edge. Its bottom surface is waist-shaped. The radially outer side of the middle ring oil pad 3 is the wide oil-sealing edge F1-2, and the inner side is the narrow oil-sealing edge F2-2. The height of the wide oil-sealing edge F1-2 is greater than the height of the narrow oil-sealing edge F2-2, and its width is greater than the width of the narrow oil-sealing edge F2-2. The bottom surface of the middle ring oil pad 3 has two oil supply holes and a pressure relief structure X-2. The two oil supply holes are the first middle ring oil pad oil supply hole G1-2 and the second middle ring oil pad oil supply hole G2-2. The first middle ring oil pad oil supply hole G1-2 is located on the radial center line of the middle ring oil pad 3 and is supplied with hydraulic oil by the secondary oil supply chamber Y2. The second middle ring oil pad oil supply hole G2-2 is located on the tangential central axis of the middle ring oil pad 3 and is directly supplied with oil by the tertiary oil supply chamber Y3. The pressure relief structure X-2 is located on the radial center line of the middle ring oil pad 3.

[0040] like Figure 9The outer ring oil pad 4 shown is similar to the middle ring oil pad 3. The outer radial side of the outer ring oil pad 4 is the outer ring wide sealing edge F1-3, and the inner side is the outer ring narrow sealing edge F2-3. The height of the outer ring wide sealing edge F1-3 is greater than the height of the outer ring narrow sealing edge F2-3, and its width is greater than the width of the outer ring narrow sealing edge F2-3. Two oil supply holes and a pressure relief structure X-3 are provided on the bottom surface of the outer ring oil pad 4. The two oil supply holes are the first outer ring oil pad oil supply hole G1-3 and the second outer ring oil pad oil supply hole G2-3. The first outer ring oil pad oil supply hole G1-3 is located on the radial center line of the outer ring oil pad 4 and is supplied with hydraulic oil by the secondary oil supply chamber Y2. The second outer ring oil pad oil supply hole G2-3 is located on the tangential center axis of the outer ring oil pad 4 and is directly supplied with oil by the tertiary oil supply chamber Y3. The pressure relief structure X-3 is located on the radial center line of the middle ring oil pad 3.

[0041] Therefore, the height and width of the wide and narrow sealing edges of the inner ring oil pad 2, the middle ring oil pad 3, and the outer ring oil pad 4 gradually decrease from the outside to the inside, with a width ratio of 1.5:1 to 3:1. Each has two oil supply holes on its bottom surface and a pressure relief structure. One oil supply hole is located on the radial center line of the oil pad and is connected to the secondary oil supply chamber Y2. It is supplied with oil by the secondary oil supply chamber Y2. In the diametrical direction, it is supplied with hydraulic oil by the secondary oil supply chamber Y2 to control the pressure of the inner ring oil pad 2 and maintain its oil supply under normal working conditions. The other oil supply hole is located on the tangential center axis of the oil pad and is connected to the tertiary oil supply chamber Y3. It is supplied with oil by the tertiary oil supply chamber Y3 and is responsible for fine-tuning the support effect when the turntable support condition changes or is subjected to sudden load, thereby responding to and changing the load. Each inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 has a narrower radial inner edge and a lower height compared to its outer edge. The pressure relief structure on each inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 is located on the radial center line of the oil pad. When the pressure relief structure is open, oil leaks from the oil pad, achieving rapid pressure relief.

[0042] like Figure 10 The pressure relief structure shown consists of a pressure relief oil cap XG and a solenoid valve XC. A through hole is formed on the bottom surface of the oil pad, and the solenoid valve XC is installed inside the through hole. The top of the solenoid valve XC is connected to the pressure relief oil cap XG. The solenoid valve XC is a valve capable of millisecond-level response and can generate displacement in the vertical direction. When it moves upward, causing the pressure relief oil cap XG to move upward as well, a gap is exposed on the bottom surface of the oil pad, and oil flows out from the gap (e.g., ...). Figure 10(The direction of oil flow indicated by the middle arrow) completes the pressure relief. During pressure relief, the old oil in the oil pad flows out of the oil pad, and the new oil flows into the oil pad, realizing the replacement of the oil. Under normal support conditions, because the hydraulic oil fills the oil pad and the gap between the oil pad and the turntable surface 1, the solenoid valve XC controls the pressure relief cover XG to be tightly attached to the bottom surface of the oil pad, that is, the pressure relief structure is in the closed state. Figure 10 The pressure relief structure shown is in the open state. When the solenoid valve XC receives a load change, it uses its millisecond-level reaction effect to push the pressure relief oil cover XG upward away from the bottom surface of the oil pad, thereby realizing the oil leakage from the oil pad in the direction of the arrow, achieving rapid unloading of pressure.

[0043] like Figure 11 The diagram shows the oil supply circuit for an oil pad assembly. Oil is drawn from oil tank S1 using oil pump S2. Oil tank S1 is connected to primary oil supply chamber Y1 via a pipeline. A first pressure sensor S4, a first check valve S5, and a first throttle valve S6 are installed on the connecting pipeline between oil tank S1 and primary oil supply chamber Y1. The oil pressure entering primary oil supply chamber Y1 is detected by the first pressure sensor S4. After passing through the first check valve S5, the oil then flows into primary oil supply chamber Y1 via the first throttle valve S6. Oil that does not flow into the first check valve S5 flows back to oil tank S1 via overflow valve S3. The pressure entering primary oil supply chamber Y1 detected by the first pressure sensor S4 is the overall support pressure of the turntable. The output end of primary oil supply chamber Y1 is connected to multiple secondary oil supply chambers Y2. Figure 11 Only one secondary oil supply chamber Y2 is shown in the diagram; the other multiple secondary oil supply chambers Y2 and their connection structures are consistent with the diagram. A second pressure sensor S4-1 is installed at the output end of the primary oil supply chamber Y1 to monitor the output pressure of the primary oil supply chamber Y1; a third pressure sensor S4-2 and a second throttle valve S6-1 are installed at the input end of each secondary oil supply chamber Y2 to monitor and supply oil pressure in each secondary oil supply chamber Y2.

[0044] Each secondary oil supply chamber Y2 is directly connected to three oil pads in the same oil pad group. Specifically, it connects to the corresponding oil supply holes of the inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4 in the same group, namely, the first middle ring oil pad supply hole G1-1 of the inner ring oil pad 2, the first middle ring oil pad supply hole G1-2 of the middle ring oil pad 3, and the first outer ring oil pad supply hole G1-3 of the outer ring oil pad 4. A fourth pressure sensor S4-3 and a third throttle valve S6-2 are installed on the connecting pipe between each secondary oil supply chamber Y2 and each oil pad supply hole. Each third throttle valve S6-2 controls the secondary oil supply chamber Y2 to supply oil to one oil supply hole.

[0045] In addition, the secondary oil supply chamber Y2 is also connected to a set of three tertiary oil supply chambers Y3. These are: the inner ring tertiary oil supply chamber Y3-1, which is connected to the second inner ring oil gasket supply hole G2-1 on the inner ring oil gasket 2; the middle ring tertiary oil supply chamber Y3-2, which is connected to the second middle ring oil gasket supply hole G2-2 on the middle ring oil gasket 3; and the outer ring tertiary oil supply chamber Y3-3, which is connected to the second outer ring oil gasket supply hole G2-3 on the outer ring oil gasket 4. A fourth throttle valve S6-3 is installed on the pipeline connecting the tertiary oil supply chamber Y3 to the oil supply hole. The fourth throttle valve S6-3 controls the oil supply from one tertiary oil supply chamber Y3 to one oil supply hole. Therefore, each of the three-stage oil supply chambers Y3 in the group corresponds one-to-one with the oil pads in the oil pad group. Each three-stage oil supply chamber Y3 is connected to one oil supply hole of an oil pad. It can be seen that the number of three-stage oil supply chambers Y3 is consistent with the total number of oil pads. The number of two-stage oil supply chambers Y2 is consistent with the number of oil pad groups, and the number of one-stage oil supply chamber Y1 is 1. Therefore, after passing through the two-stage oil supply chamber Y2, the oil flows into the connected three-stage oil supply chamber Y3 and the corresponding oil supply hole on the oil pad. After passing through the two-stage oil supply chamber Y2, it first flows into the three-stage oil supply chamber Y3, and then from the three-stage oil supply chamber Y3 flows into the corresponding oil supply hole.

[0046] In operation, this invention utilizes an oil pad structure to enhance anti-tilting performance. Different oil-sealing edge heights are used to support positions at varying radial distances. The higher oil-sealing edge height at farther radial locations results in varying oil film thicknesses at different sealing edge heights under normal, stable support conditions. Higher sealing edge heights produce thinner oil films, while lower sealing edge heights produce thicker oil films. Therefore, it can withstand tilting torques. The oil film thickness between the turntable surface 1 and the oil pad changes, and due to the different radial positions of the oil film, different locations experience different compression amounts. The outer radial sides experience greater compression, and since the oil film is already thinner than the inner radial sides, it is more sensitive to compression, generating a faster and greater supporting force during compression. Because of the higher sealing edge height on the outer radial sides, there is more movement on the outer radial sides during tilting. The oil film thickness on the outer radial sides varies more significantly than on the inner radial sides, resulting in a greater supporting force on the outer radial sides, thus balancing the supporting effect. A higher sealing edge height on the radially outer side results in a faster and more sensitive adjustment of the hydrostatic support under inclined conditions. This means that changes in the higher sealing edge height and smaller oil film thickness are more pronounced and rapid than those on the radially inner side. Different oil pad shapes provide varying support capabilities at different radial locations; the radially inner side uses a smaller elliptical oil pad, while the radially outer side uses a larger, waist-shaped oil pad. The larger sealing edge top surface area provides a larger oil film area, resulting in better support and ensuring stability. Since a larger oil film area provides more support redundancy, the larger waist-shaped oil pad offers more stable support.

[0047] Secondly, it utilizes a three-stage oil supply chamber system with varying volumes to achieve composite control combining macroscopic pressure stabilization and microscopic fine-tuning. The first-stage oil supply chamber Y1, with the largest volume, serves as a buffer for the total hydraulic power source, primarily used for macroscopic pressure regulation. The second-stage oil supply chamber Y2, with the second largest volume, connects to a set of (inner, middle, and outer ring) oil pads (group control level), integrating a piezoelectric adjustment mechanism capable of regional flow distribution and dynamic adjustment based on load changes within the sector. The third-stage oil supply chamber Y3, with the smallest volume (fine-tuning level), is located directly below the oil pads. Its extremely small volume results in a very high pressure response frequency, enabling millisecond-level fine-tuning of the support state of individual oil pads, eliminating local pressure fluctuations, and ensuring uniform support stiffness. Therefore, different levels of fuel supply chambers achieve a synergistic working effect. Large-volume chambers provide greater damping to ensure system stability, while small-volume chambers provide faster response to cope with high-frequency vibrations. This hierarchical arrangement of fuel supply chambers not only solves the problem of slow response in traditional single-chamber systems but also avoids the oscillation risk caused by direct control.

[0048] Because pressure sensors and throttle valves are installed between the primary oil supply chamber Y1, the secondary oil supply chamber Y2, and the tertiary oil supply chamber Y3, the pressure can be constantly monitored and dynamically adjusted to ensure support for different operating conditions. The three oil supply chambers of different volumes allow for varying levels of control over flow rate and supply pressure. Larger volumes provide macroscopic control over the overall support effect, while smaller volumes allow for finer adjustments, ensuring stable and consistent support performance to cope with different operating conditions.

[0049] Thirdly, rapid pressure relief and thermal balance based on piezoelectric structure: Employing solenoid valve micro-displacement drive technology solves the problems of high-pressure oil film temperature rise control and sudden load unloading. A pressure relief valve mechanism consisting of a solenoid valve XC and a pressure relief cap XG is integrated into the oil pad. Utilizing the microsecond-level response speed of the solenoid valve, when the sensor detects an abnormal increase in oil chamber pressure (such as an impact load), the control system drives the solenoid valve to quickly change the oil flow path or open the pressure relief micro-orifice, achieving instantaneous pressure release and preventing rigid contact of the oil pad due to overload. When the shear heat generated by high-speed rotation causes a decrease in oil viscosity, this pressure relief structure can be used as a fluid replacement structure. When a local oil temperature rise is detected, the system forcibly accelerates the outflow of high-temperature oil in that area and introduces low-temperature fresh oil through high-frequency opening and closing of the pressure relief channel. This rapid fluid replacement mechanism effectively suppresses the temperature rise effect, ensuring constant hydraulic oil viscosity and oil film carrying capacity, thereby guaranteeing the stability of the turntable's long-term high-precision operation. The pressure relief structure in this invention can relieve pressure according to different working pressures and support requirements, ensuring rapid changes in hydraulic oil under special working conditions. Timely pressure relief ensures that the patented design structure always possesses the ability to quickly prepare for support, and can rapidly restore hydraulic oil flow in the hydraulic support system designed in this invention when the hydraulic oil becomes unstable due to temperature rise, ensuring stable support and rapid replacement. This invention, through a specially designed pressure relief structure, utilizes the microsecond-level rapid response of the solenoid valve XC to change the height of the corresponding position of its pressure relief cap XG, thereby altering the flow path of the hydraulic fluid. Figure 8 The altered flow path allows hydraulic oil to flow out rapidly, thus achieving rapid pressure relief.

[0050] Example

[0051] The following is an embodiment of the intelligent hydrostatic rotary table of the present invention:

[0052] like Figure 1 and Figure 2 The hydrostatic rotary table has a diameter of 900mm and uses a 900mm table surface 1, which is made of 40Cr alloy steel, heat-treated to a hardness of HRC45-50, with an outer diameter of 900mm and a thickness of 100mm. Its radial outer edge is gear-shaped and directly meshes with the drive motor for transmission. The upper surface of the base 5, which holds the oil pads, has 18 oil pad cavities machined for installing the oil pads, with 6 sets of oil pads available.

[0053] The oil pad cavities on base 5 are divided into three types, corresponding to the installation of inner ring oil pad 2, middle ring oil pad 3, and outer ring oil pad 4. The size of the oil pad cavity corresponds to the installed oil pad, and the shape of the cavity is consistent with the outer edge of the oil pad. However, for ease of installation and replacement, the size is designed to be slightly larger than the outer edge of the oil pad. To maintain stable support, the oil pad cavities are evenly distributed on base 5. Since six sets of oil pads are used to support and lubricate the turntable, the angle between the line connecting the center of the inner ring oil pad 2 to the axis of base 5 and the line connecting the center of the middle ring oil pad 3 to the axis of turntable base 5 in each set is 180 ÷ 6 = 30 degrees. The line connecting the center of the inner ring oil pad 2 to the axis of turntable base 5 in this set coincides with the line connecting the center of the outer ring oil pad 4 to the axis of turntable base 5 in the previous set. It can be seen that the angle between the line connecting the center of the inner ring oil pad cavity D1 to the axis of base 5 and the line connecting the center of the middle ring oil pad cavity D2 to the axis of base 5 is 30°, and the angle between the line connecting the center of the middle ring oil pad cavity D2 to the axis of turntable base 5 and the line connecting the center of the outer ring oil pad cavity D3 to the axis of turntable base 5 is 30°. The line connecting the center of the inner ring oil pad cavity D1 to the axis of base 5 coincides with the line connecting the center of the outer ring oil pad cavity D3 to the axis of base 5 of the other set.

[0054] like Figure 5-6 The inner ring oil gasket 2 is elliptical, with a major axis of 80mm and a minor axis of 50mm. The major axis points tangentially, and the minor axis points radially. The inner ring oil gasket 2 consists of a bottom surface and an oil-sealing edge. The bottom surface is elliptical, and the oil-sealing edge is the vertical wall surrounding the bottom edge. The oil-sealing edges of the inner ring oil gasket 2, distributed radially on both sides, have inconsistent heights and widths. During installation, it is important to note that the wider oil-sealing edge (inner ring wide oil-sealing edge F1-1) should be installed on the outer radial side, and the narrower oil-sealing edge (inner ring narrow oil-sealing edge F2-1) should be installed on the inner radial side. The side with the higher oil-sealing edge height is the inner ring wide oil-sealing edge F1-1, and the side with the lower oil-sealing edge height is the inner ring narrow oil-sealing edge F2-1.

[0055] like Figure 7-9The middle oil pad 3 and the outer oil pad 4 are waist-shaped, with two concentric arcs forming the inner and outer sides. These arcs are connected by circular transitions at their ends. The major axis of the waist-shaped pad points tangentially, while the minor axis points radially. The sealing edges are not of equal height; they differ in height along the major axis. The bottom surface of the middle oil pad 3 is composed of two non-concentric arcs, with a major axis of 110mm and a minor axis of 70mm. The middle oil pad 3 consists of a bottom surface and sealing edges. The bottom surface is formed by two concentric arcs of different radii and two semicircles at the ends of the major axis. The sealing edges are vertical walls that do not form a complete circle around the bottom surface, and the widths of the two arc sealing edges are inconsistent. Therefore, special attention is required during installation. The wider sealing edge, i.e., the wide sealing edge F1-2 of the middle ring, needs to be installed on the radially outer side, while the narrower sealing edge, i.e., the narrow sealing edge F2-2 of the middle ring, needs to be installed on the radially inner side. Due to the need for stable support, the wide sealing edge F1-2 of the middle ring needs to be designed with a higher sealing edge height, while the narrow sealing edge F2-2 of the middle ring needs to be designed with a lower sealing edge height.

[0056] The outer ring oil pad 4 is similar in shape to the middle ring oil pad 3, with a major axis of 140mm and a minor axis of 90mm. It also consists of a bottom surface and an oil-sealing edge. The widths of the two arc-shaped oil-sealing edges are inconsistent. During installation, the wider oil-sealing edge (outer ring wide oil-sealing edge F1-3) needs to be installed on the radially outer side, while the narrower oil-sealing edge (outer ring narrow oil-sealing edge F2-3) needs to be installed on its radially inner side. Due to the need for a more stable anti-tilting effect, the height of the outer ring wide oil-sealing edge F1-3 is designed to be higher, and the height of the outer ring narrow oil-sealing edge F2-3 is designed to be lower. The height of the three oil pads is 60-100 micrometers on the radially outer side and 40-60 micrometers on the radially inner side. The height of the intermediate transition zone between the radially outer and inner sides changes linearly, decreasing in a step-like manner from the outside to the inside along the radial direction. This design allows the oil film stiffness to gradually change along the radial direction, forming an adaptive pressure distribution under tilting loads and automatically compensating for overturning moments.

[0057] To provide effective anti-tilting support, the oil pad cavities are evenly distributed and offer stepped support. The oil pad cavities are grouped into inner, middle, and outer rings; this embodiment has six groups, each arranged in a circular array. Each array occupies a distribution angle of Y = 360 ÷ 6 = 60°. The centers of each oil pad within each group are not aligned on the same axis, and their center-to-center distances are not equal.

[0058] Overall, the inner ring oil pad 2, the middle ring oil pad 3, and the outer ring oil pad 4 are distributed clockwise. Specifically, the center of the inner ring oil pad 2 is located on a concentric circle with a radius of 280 mm, the center of the middle ring oil pad 3 is located on a concentric circle with a radius of 350 mm, and the center of the outer ring oil pad 4 is located on a concentric circle with a radius of 400 mm. In a clockwise direction, the middle ring oil pad 3 is 30° away from the inner ring oil pad 2, and the outer ring oil pad 4 is 30° away from the inner ring oil pad 2.

[0059] Figure 2-4 and Figure 11 As shown, a special oil pad structure is designed for the multi-stage oil supply chambers, with two oil supply routes on the bottom surface of each oil pad. Taking the inner ring oil pad 2 as an example, it has a first inner ring oil pad supply hole G1-1 and a second inner ring oil pad supply hole G2-1. To achieve a special pressure relief function, a pressure relief structure is designed on the bottom surface of the oil pad. The solenoid valve XC in the pressure relief structure can achieve a millisecond-level response, generating displacement in the vertical direction, which drives the pressure relief oil cover XG to move together, thus creating a gap on the bottom plate of the oil pad, allowing oil to flow out from the gap, thereby completing the pressure relief operation. During pressure relief, the old oil in the oil pad flows out, and the new oil flows into the oil pad, realizing the replacement of the oil.

[0060] The first part of the working process involves the input of hydraulic oil, the formation of an oil film to create support. Hydraulic oil is continuously drawn from the oil tank S1 into the oil circuit by the oil pump S2, passing through a check valve, a throttle valve, and a pressure sensor before flowing into the primary oil supply chamber Y1. The pressure sensor S4 monitors the pressure of the incoming oil (i.e., the oil pressure in the primary oil supply chamber Y1) and transmits the data to a computer outside the lubrication device for recording and analysis. The oil in the primary oil supply chamber Y1 is divided into six portions, which flow into six secondary oil supply chambers Y2. Before flowing into the secondary oil supply chambers Y2, the oil passes through a second throttle valve S6-1 and a third pressure sensor S4-2. The third pressure sensor S4-2 monitors the oil pressure in the secondary oil supply chambers Y2 and transmits the data to the computer for recording and analysis. The oil in the secondary oil supply chamber Y2 is divided into two categories. One category flows directly into the inner ring oil pad supply holes G1-1, the middle ring oil pad supply holes G1-2, and the outer ring oil pad supply holes G1-3 in the oil pad. The other category flows into the tertiary oil supply chamber Y3, namely, the tertiary oil supply chambers Y3-1, Y3-2, and Y3-3. The oil flowing into the tertiary oil supply chamber Y3 then flows into the oil supply holes on the oil pad, namely, the inner ring oil pad supply hole G1-2, the middle ring oil pad supply hole G2-2, and the outer ring oil pad supply hole G2-3, supplying oil to the oil pad. The oil pressure in the oil pad is monitored by a pressure sensor (e.g., the fourth pressure sensor S4-3) in the oil pad, and the output is recorded and analyzed by the computer. After being distributed and rectified in the three-stage chambers, the oil finally forms an oil film in the gap between the oil pad and the turntable surface 1, thus providing lubrication and support for the turntable surface 1. The primary oil supply chamber Y1 is responsible for the overall input; high-pressure hydraulic oil first enters the primary oil supply chamber Y1, which has the largest volume in the base cross-section. This chamber acts as a buffer to stabilize the input pressure. The secondary oil supply chamber Y2 is responsible for group control; oil is delivered from the primary oil supply chamber Y1 to the six secondary oil supply chambers Y2 via six pipelines. Each secondary oil supply chamber Y2 controls a set of oil pads (inner, middle, and outer rings), meaning the number of oil pad sets equals the number of secondary oil supply chambers Y2. At this stage, the system monitors the pressure status for the first time using a built-in detection structure. The tertiary oil supply chamber Y3 is responsible for precise supply; the supporting terminal, i.e., the secondary chamber, further diverts the oil, delivering it to the three tertiary oil supply chambers Y3 below it. The tertiary oil supply chambers Y3 have the smallest volume, and their number matches the number of oil pads. They are located directly below each oil pad for precise oil supply to each individual oil pad. When the lubrication system tilts—that is, during normal operation, when the turntable rotates and is subjected to eccentric loads causing tilting—the system activates a dual adjustment mechanism, combining passive and active adjustments. The specific workflow of the passive adjustment mechanism is as follows:

[0061] Due to the overturning moment, the turntable 1 tilts slightly (e.g., sinks outwards). This tilting naturally compresses the oil film thickness. Specifically, the outermost oil film is rapidly compressed, and the innermost oil film is also compressed simultaneously, but to a lesser degree. The greater compression of the outer oil film provides stronger support, which balances the tilting moment. This change in oil film thickness triggers a rapid passive adaptive response. This passive response occurs because the outer sealing edge is higher and the oil film is thinner; when the turntable 1 tilts to that side, the oil film at that location is compressed the most. The thinner oil film is extremely sensitive to compression, causing a sudden surge in flow resistance and a rapid increase in pressure within the oil chamber in that area. Because a significant reverse hydraulic support force is generated in time under these conditions, automatically resisting tilting, this structural design significantly improves anti-tilting stiffness.

[0062] The active adjustment mechanism of the working process works as follows: Due to the torque acting on the turntable 1, after a passive adjustment process, the pressure sensor transmits accurate pressure data. On the tilted side, the oil pressure in the oil pad will increase. When the computer detects the increase in oil pad pressure, it controls the throttle valve flowing through the oil circuit to increase the amount of oil flowing into the oil pad, thereby achieving a dynamic and precise response to the torque. In this embodiment, the oil flow adjustment of a specific oil pad is explained: when the oil pressure in the inner ring oil pad increases, the computer judges the magnitude of the change compared to the pressure change range of other oil pads. For smaller pressure changes, the throttle valve outside the inner ring oil pad supply port 2G2-1 is adjusted to increase the flow rate. Starting from the oil pump S2, the amount of oil flowing into the lubrication system will increase. After rectification in the oil supply chambers along the path, it is finally input into the inner ring oil pad supply port G2-1 in the third-stage oil supply chamber Y-1. For larger pressure changes, the flow rate is typically increased by adjusting the throttle valve outside the inner ring oil gasket supply port G1-1. Starting from oil pump S2, the amount of oil flowing into the lubrication system increases, and after rectification through the supply chambers along the path, it is finally input into the inner ring oil gasket supply port G1-1 in the secondary supply chamber Y2. Usually, the internal pressure in the oil gasket does not change independently, so the adjustment process is usually not targeted at a single oil gasket, but rather multiple oil gaskets are adjusted simultaneously, with different throttle valves controlling the flow rate for different oil gaskets.

[0063] Furthermore, when the present invention detects that the temperature and pressure of the overall lubrication device are higher than the standard, it considers using the device's rapid pressure relief device to relieve pressure and exchange flow to ensure thermal balance. For example, when the sensor detects excessively high local oil temperature or the pressure sensor detects a pressure surge peak, a pressure relief structure with a microsecond-level response is used to relieve pressure. The solenoid valve generates a vertical displacement in milliseconds, causing the pressure relief cap XG to move upwards, thus creating a gap on the oil pad base plate for rapid pressure relief. This instantly opens the pressure relief channel located at the bottom of the oil pad and the bottom of the oil supply chamber. The efficient pressure relief adjustment method enables rapid replacement of hydraulic oil. When high-temperature or high-pressure oil is rapidly discharged, the oil pump S2 increases the flow rate to replenish it with fresh, cold oil. This not only achieves rapid unloading but also uses the rapid flow of oil to remove heat, ensuring the stability of the oil film viscosity and enhancing the stability and durability of the present invention's support.

Claims

1. An intelligent hydrostatic rotary table with adaptive anti-tilt capability, comprising a tabletop (1) at the top and a base (5) at the bottom, wherein the top surface of the base (5) is provided with multiple oil pad cavities for mounting oil pads, each oil pad cavity containing one oil pad, characterized in that: The base (5) is provided with three types of oil pads from the outside to the inside: inner ring oil pad (2), middle ring oil pad (3) and outer ring oil pad (4). The number of the three types of oil pads is the same, and the volume increases in sequence. Each type of oil pad is composed of a bottom surface and an oil sealing edge. The height and width of the oil sealing edge gradually decrease from the outside to the inside. The inner ring oil pad (2) is elliptical. The minor axis of the ellipse coincides with the radius, and the major axis points to the tangent. The middle ring oil pad (3) and the outer ring oil pad (4) are waist-shaped. The major axis of the waist points to the tangent, and the central minor axis coincides with the radius. The inner and outer rings of the waist shape are concentric arcs. An adjacent inner ring oil pad (2), a middle ring oil pad (3) and an outer ring oil pad (4) are combined to form an oil pad group. The base (5) is provided with first-level, second-level, and third-level oil supply chambers (Y1, Y2, Y3) with volumes ranging from large to small. There is one first-level oil supply chamber (Y1), the number of second-level oil supply chambers (Y2) is the same as the number of oil pad groups, and the number of third-level oil supply chambers (Y3) is the same as the number of oil pads. The primary oil supply chamber (Y1) is connected to each secondary oil supply chamber (Y2) via pipelines. The output of each secondary oil supply chamber (Y2) is divided into six branches. The first, second, and third branches are connected to three tertiary oil supply chambers (Y3) via corresponding pipelines. The fourth, fifth, and sixth branches are connected to three oil pads in a set of oil pads via corresponding pipelines. Each oil pad has two oil supply holes on its bottom surface. The first oil supply hole is supplied with oil by the secondary oil supply chamber (Y2). Each tertiary oil supply chamber (Y3) is connected to the second oil supply hole of an oil pad, and the second oil supply hole is supplied with oil by the tertiary oil supply chamber (Y3).

2. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: The first oil supply hole on the inner ring oil pad (2) is arranged on the short axis of the inner ring oil pad (2), and the second oil supply hole is arranged on the long axis of the inner ring oil pad (2); the first oil supply hole on the middle ring oil pad (3) and the outer ring oil pad (4) is arranged on their radial center line, and the second oil supply hole is arranged on their tangential center axis.

3. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: Each oil pad has a pressure relief structure (X-1) on its bottom surface. The pressure relief structure (X-1) is located on the short axis of the inner ring oil pad (2) and on the radial center line of the middle ring oil pad (3) and the outer ring oil pad (4).

4. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 3, characterized in that: The pressure relief structure (X-1) consists of a pressure relief oil cap (XG) and a solenoid valve (XC). A through hole is opened on the bottom surface of the oil pad, and a solenoid valve (XC) is installed in the through hole. The top of the solenoid valve (XC) is connected to the pressure relief oil cap (XG). The solenoid valve (XC) is a valve with a millisecond-level response and can generate displacement in the vertical direction. When it drives the pressure relief oil cap (XG) to move upward, a gap is exposed on the bottom surface of the oil pad, and the oil flows out from the gap.

5. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: Oil is drawn from the oil tank using an oil pump. The oil tank is connected to the primary oil supply chamber (Y1) via a pipeline. The pipeline connecting the oil tank and the primary oil supply chamber (Y1) is equipped with a first pressure sensor (S4), a first check valve (S5), and a first throttle valve (S6). A second pressure sensor (S4-1) is installed at the output end of the primary oil supply chamber (Y1). A third pressure sensor (S4-2) and a second throttle valve (S6-1) are installed at the input end of each secondary oil supply chamber (Y2). A fourth pressure sensor (S4-3) and a third throttle valve (S6-2) are installed on the pipeline connecting each secondary oil supply chamber (Y2) and each oil pad supply hole. A fourth throttle valve (S6-3) is installed on the pipeline connecting each tertiary oil supply chamber (Y3) and the supply hole.

6. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: The line connecting the center of the inner ring oil pad (2) to the axis of the base (5) in each oil pad group is not collinear with the line connecting the center of the middle ring oil pad (3) to the axis of the base (5). The line connecting the center of the middle ring oil pad (3) to the axis of the base (5) in each oil pad group is not collinear with the line connecting the center of the outer ring oil pad (4) to the axis of the base (5).

7. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 6, characterized in that: The line connecting the center of the inner ring oil pad (2) to the axis of the base (5) in each oil pad group coincides with the line connecting the center of the outer ring oil pad (4) to the axis of the base (5).

8. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: The distance between the outermost point of the inner ring oil pad (2) and the axis of the base (5) is less than the distance between the innermost point of the middle ring oil pad (3) and the axis of the base (5). The distance between the outermost point of the middle ring oil pad (3) and the axis of the base (5) is greater than the distance between the innermost point of the outer ring oil pad (4) and the axis of the base (5).

9. The intelligent hydrostatic rotary table with adaptive anti-tilt capability according to claim 1, characterized in that: The width ratio of each type of oil pad is 1.5:1 to 3:

1.

10. A smart hydrostatic rotary table with adaptive anti-tilt capability according to any one of claims 1-9, characterized in that: The primary oil supply chamber (Y1) serves as a buffer pool for the total hydraulic power source, performing macroscopic pressure regulation. The secondary oil supply chamber (Y2) integrates a piezoelectric adjustment mechanism to perform regional flow distribution and dynamic adjustment for load changes within this area. The tertiary oil supply chamber (Y3) performs millisecond-level fine-tuning of the support state of individual oil pads.

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