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CN-122014750-A - Hydrostatic guideway mechanism, equipment and control method of hydrostatic guideway mechanism

CN122014750ACN 122014750 ACN122014750 ACN 122014750ACN-122014750-A

Abstract

The application discloses a hydrostatic guideway mechanism, equipment and a control method of the hydrostatic guideway mechanism. The hydrostatic guideway mechanism comprises a sliding block, a restrictor and an adjusting assembly. The oil pressure regulating device comprises a sliding block, a throttle, an oil pressure regulating device and an adjusting component, wherein the sliding block is provided with a static pressure cavity on at least one side surface, an oil hole communicated with the static pressure cavity is formed in the sliding block, the throttle is arranged on the sliding block and used for conveying oil to the static pressure cavity and regulating the pressure of the oil, and the adjusting component is arranged on the sliding block and used for regulating the viscosity of the oil. The hydrostatic guideway mechanism, the equipment and the control method of the hydrostatic guideway mechanism at least can solve the problems of unstable oil film rigidity, fluctuation of bearing capacity and reduction of movement precision caused by the adaptive deviation of the throttle and the oil cavity pressure flow characteristic of the hydrostatic guideway system in the prior art.

Inventors

  • LU XIANLONG
  • PAN LONG
  • DENG XIAOJIE
  • CHENG WENWEI
  • LV HE
  • CHEN HONGWEI
  • Xia Haijin

Assignees

  • 中国机械总院集团海西(福建)分院有限公司

Dates

Publication Date
20260512
Application Date
20251225

Claims (11)

  1. 1. A hydrostatic guideway mechanism, comprising: The sliding block (10), at least one side surface (101) of the sliding block (10) is provided with a static pressure cavity (11), and the sliding block (10) is provided with an oil hole (12) communicated with the static pressure cavity (11); A throttle (20), wherein the throttle (20) is arranged on the sliding block (10), and the throttle (20) is used for conveying oil to the static pressure cavity (11) and adjusting the pressure of the oil; The adjusting assembly (30) is arranged on the sliding block (10) and used for adjusting the viscosity of the oil.
  2. 2. The hydrostatic rail mechanism of claim 1, wherein said oil comprises magnetorheological fluid; The adjusting assembly (30) comprises a magnetic control adjusting assembly, the magnetic control adjusting assembly comprises an electromagnetic coil (31) and an excitation power supply, the excitation power supply is electrically connected with the electromagnetic coil (31), and the electromagnetic coil (31) is arranged on the outer surface of the static pressure cavity (11) to adjust the viscosity of magnetorheological fluid.
  3. 3. The hydrostatic guideway mechanism according to claim 2, characterized in that the magnetically controlled adjustment assembly further comprises a controller and a pressure detection element (32), the pressure detection element (32) is disposed on the slider (10) for detecting the pressure of the magnetorheological fluid in the hydrostatic cavity (11), the pressure detection element (32), the controller and the excitation power supply are electrically connected to form a control loop, and the controller controls the magnitude of the output current of the excitation power supply according to the pressure signal transmitted by the pressure detection element (32).
  4. 4. The hydrostatic rail mechanism of claim 3, wherein said hydrostatic pockets (11) include a plurality, said restrictors (20) include a plurality, said hydrostatic pockets (11) are disposed in one-to-one correspondence with said restrictors (20), and/or, The throttle (20) comprises a fixed throttle or a variable throttle, which is electrically connected to the controller when the throttle (20) comprises a variable throttle, the controller being at least for adjusting a throttle parameter of the variable throttle.
  5. 5. Hydrostatic rail mechanism according to claim 2, characterized in that the hydrostatic chamber (11) comprises a first side wall (111), the first side wall (111) being parallel to the side surface (101) of the slider (10) on which the hydrostatic chamber (11) is arranged, the electromagnetic coil (31) being arranged on the first side wall (111) and being flush with the first side wall (111).
  6. 6. The hydrostatic rail mechanism of claim 5, wherein the electromagnetic coil (31) is disposed in a spiral configuration on the first side wall (111), and wherein the spacing between adjacent turns of the electromagnetic coil (31) is equal.
  7. 7. The hydrostatic rail mechanism of claim 5, wherein the electromagnetic coil (31) is disposed on the first side wall (111) and is flush with the first side wall (111) by a sealant.
  8. 8. Hydrostatic rail mechanism according to claim 2, characterized in that an insulating coating is provided on the inner wall surface of the hydrostatic chamber (11), which insulating coating covers the electromagnetic coil (31).
  9. 9. An apparatus comprising the hydrostatic rail mechanism of any one of claims 1 to 8.
  10. 10. A control method of a hydrostatic guideway mechanism, characterized in that the control method of a hydrostatic guideway mechanism is used for controlling the hydrostatic guideway mechanism according to any one of claims 1 to 8, the control method of a hydrostatic guideway mechanism comprising: And detecting the pressure in the hydrostatic cavity (11) in real time, when the pressure in the hydrostatic cavity (11) is compared with a preset pressure value to obtain a pressure deviation, and when the pressure deviation is larger or smaller than a preset deviation range, adjusting the viscosity of oil by using the adjusting component (30) until the pressure deviation is within the preset deviation range.
  11. 11. The method of claim 10, wherein the viscosity of the oil is adjusted to reduce the viscosity of the oil using the adjustment assembly (30) when the pressure deviation is greater than the predetermined deviation range, and/or, When the pressure deviation is less than the predetermined deviation range, the viscosity of the oil is adjusted by the adjusting assembly (30) to increase the viscosity of the oil.

Description

Hydrostatic guideway mechanism, equipment and control method of hydrostatic guideway mechanism Technical Field The application relates to the technical field of static pressure, in particular to a static pressure guide rail mechanism, equipment and a control method of the static pressure guide rail mechanism. Background In the related art, due to the influence of factors such as additional machining errors in the manufacturing process and installation deviation in the assembling process, the actual pressure flow characteristics of the restrictor and the oil cavity are difficult to achieve an ideal matching state, and only the design value can be as close as possible. The deviation between the actual pressure flow characteristics of the restrictor and the oil cavity can cause the problems of unstable oil film rigidity, fluctuation of bearing capacity, decline of movement precision and the like. The above problems are particularly acute in high speed, heavy duty or precision motion scenarios, severely limiting the application of hydrostatic rail systems. Disclosure of Invention The application mainly aims to provide a hydrostatic guideway mechanism, equipment and a control method of the hydrostatic guideway mechanism, which are used for solving the problems of unstable oil film rigidity, fluctuation of bearing capacity and reduction of movement precision caused by adaptive deviation of the throttle and oil cavity pressure flow characteristics of a hydrostatic guideway system in the prior art. According to one aspect of the present application, there is provided a hydrostatic rail mechanism comprising: The sliding block is provided with a static pressure cavity on at least one side surface, and an oil hole communicated with the static pressure cavity is formed in the sliding block; The restrictor is arranged on the sliding block and is used for conveying oil to the hydrostatic cavity and adjusting the pressure of the oil; the adjusting component is arranged on the sliding block and used for adjusting the viscosity of the oil. Further, the oil liquid comprises magnetorheological fluid; the adjusting component comprises a magnetic control adjusting component, the magnetic control adjusting component comprises an electromagnetic coil and an excitation power supply, the excitation power supply is electrically connected with the electromagnetic coil, and the electromagnetic coil is arranged on the outer surface of the static pressure cavity so as to adjust the viscosity of the magnetorheological fluid. Further, the magnetic control adjusting component further comprises a controller and a pressure detecting element, the pressure detecting element is arranged on the sliding block and used for detecting the pressure of magnetorheological fluid in the static pressure cavity, the pressure detecting element, the controller and the excitation power supply are electrically connected to form a control loop, and the controller controls the output current of the excitation power supply according to a pressure signal transmitted by the pressure detecting element. Further, the hydrostatic chambers include a plurality of the throttles, the hydrostatic chambers are disposed in one-to-one correspondence with the throttles, and/or, The throttle comprises a fixed throttle or a variable throttle, and when the throttle comprises a variable throttle, the variable throttle is electrically connected with the controller, and the controller is at least used for adjusting the throttle parameter of the variable throttle. Further, the hydrostatic cavity comprises a first side wall, the first side wall is parallel to the side surface of the slider, on which the hydrostatic cavity is arranged, and the electromagnetic coil is arranged on the first side wall and is flush with the first side wall. Further, the electromagnetic coil is spirally arranged on the first side wall, and the distance between two adjacent circles of the electromagnetic coil is equal. Further, the electromagnetic coil is arranged on the first side wall through sealant and is flush with the first side wall. Further, an insulating coating is arranged on the inner wall surface of the hydrostatic cavity, and the insulating coating covers the electromagnetic coil. In a second aspect, the present application provides an apparatus comprising a hydrostatic rail mechanism as described above. In a third aspect, the present application provides a control method of a hydrostatic guideway mechanism, the control method of the hydrostatic guideway mechanism being used for controlling the hydrostatic guideway mechanism, the control method of the hydrostatic guideway mechanism comprising: And detecting the pressure in the static pressure cavity in real time, and when the pressure in the static pressure cavity is compared with a preset pressure value to obtain pressure deviation, and when the pressure deviation is larger than or smaller than a preset deviation range, adjusting the viscosity o