CN112846825A

CN112846825A - Hydrostatic guide rail and temperature maintenance system based on improved precision

Info

Publication number: CN112846825A
Application number: CN202110129109.5A
Authority: CN
Inventors: 陈刚利; 刘有海; 尹承真; 阳红; 姜忠; 魏巍; 杜凯旋
Original assignee: Institute of Mechanical Manufacturing Technology of CAEP
Current assignee: Institute of Mechanical Manufacturing Technology of CAEP
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-05-28
Anticipated expiration: 2041-01-29
Also published as: CN112846825B

Abstract

The invention discloses a hydrostatic guide rail and a temperature maintaining system based on improved precision, wherein the hydrostatic guide rail comprises a supporting assembly, a driving assembly, a position measuring assembly, a cooling assembly and a protection assembly, after hydrostatic lubricating oil is introduced into the hydrostatic guide rail, hydrostatic oil films are formed on the upper and lower surfaces of a main sliding block and an auxiliary sliding block, the vertical up-and-down movement of a sliding part of the guide rail is limited, the hydrostatic oil films are formed on the left and right side surfaces of the main sliding block, the lateral left-and-right movement of the sliding part of the guide rail is limited, two throttles which are installed in series in a workbench and lead to the paths of oil cavities can adaptively adjust the oil film pressure in real time according to the change of external loads, and further the high-. The controller maintains the internal environment temperature of the hydrostatic guide rail by controlling the fluid temperature and supply flow rate in the air cooler, the first oil cooler, the second oil cooler and the lubricating oil supply device, so that the high thermal stability of the hydrostatic guide rail is realized.

Description

Hydrostatic guide rail and temperature maintenance system based on improved precision

Technical Field

The invention relates to the technical field of hydrostatic bearings, in particular to a hydrostatic guideway and a temperature maintenance system based on improved accuracy.

Background

With the progress of scientific technology and the development of national economy, the degree of complication, lightness, high speed and automation of mechanical systems is continuously improved, and industrial technologies and products are developing towards higher level, precision and top. High-end products applied in the fields of aviation, aerospace, weaponry, biology, medical treatment, electronics and the like put forward the requirements of high-performance manufacturing with micro-nano magnitude and even higher precision on parts, and ultra-precision machining is one of key technologies for realizing high-performance manufacturing.

As a material basis of ultra-precision machining, the ultra-precision machine tool drives the cutter and the part to move according to a preset track through various shafts arranged on the ultra-precision machine tool, and drives the cutter to remove redundant materials of the part, so that the part is machined. The hydrostatic guide rail supplies hydrostatic lubricating oil to the moving pair through the hydraulic supply device to carry out load support and motion guide, has the advantages of high motion precision, large bearing capacity, high rigidity, small resistance, low abrasion, long service life and the like, is often used as a linear motion shaft in an ultra-precision machine tool, and is one of core functional components for realizing the feed motion of the ultra-precision machine tool.

The surface topography characterizing the machining accuracy of a part is formed by the interaction between the tool and the part and is closely related to the relative motion of the tool part and the material removal mechanism. Because the machining precision of the ultra-precision machine tool is extremely high, any unstable factors can cause the relative movement of the cutter parts to generate geometric errors, and the thermal errors and the dynamic errors are the most important errors.

Research shows that the proportion of thermal errors in all errors affecting the machining precision of the ultra-precision machine tool can reach more than 50%, and structural deformation caused by external heat sources inside and outside the machine tool is a main cause of the thermal errors. The resistance heating of the motor and the viscous flow of lubricating oil are main heat sources in the hydrostatic guide rail, and local temperature rise in the guide rail is easily caused, so that the structure generates local thermal deformation, and the precision of the guide rail is reduced. Also, the temperature change changes the viscosity of the lubricating oil, resulting in a change in the bearing characteristics of the hydrostatic guideway. Therefore, the control of the temperature rise inside the hydrostatic guideway caused by the two heat sources has important significance for reducing the local thermal deformation of the structure and improving the thermal stability of the structure.

In the process of machining an ultra-precision machine tool, the vibration of a hydrostatic guide rail can be excited by the direct or indirect action of dynamic excitation such as oil source pressure fluctuation, inertia force caused by unbalanced mass, air pressure fluctuation around a hydrostatic support oil film, motor eccentric electromagnetic force, cutting force, environmental disturbance and the like, so that the relative vibration of a tool part is caused, dynamic errors are generated, and the machining precision of the part is reduced.

Disclosure of Invention

The invention aims to provide a hydrostatic guide rail based on improved precision, which has the advantages of strong capability of inhibiting dynamic excitation and good dynamic characteristics, further realizes high-precision linear motion of the hydrostatic guide rail and improves the machining precision of a machine tool.

In addition, the invention also provides a temperature maintaining system based on the hydrostatic guide rail, which can not only realize the high-precision linear motion of the hydrostatic guide rail, but also maintain the internal environment temperature of the hydrostatic guide rail, and simultaneously improve the thermal stability and dynamic characteristics of the hydrostatic guide rail, thereby improving the machining precision of the ultra-precision machine tool.

The invention is realized by the following technical scheme:

the hydrostatic pressure guide rail based on the improved precision comprises a supporting assembly, a driving assembly, a position measuring assembly, a cooling assembly and a protection assembly, wherein the supporting assembly comprises a fixed part and a sliding part;

the fixing part comprises a middle side guide rail bar, a main upper guide rail bar, a guide rail base, an auxiliary upper guide rail bar and an auxiliary side guide rail bar, a base oil collecting groove is formed in the upper end face of the guide rail base, a first base boss, a second base boss and a fourth base boss are arranged in the base oil collecting groove, the main side guide rail bar, the auxiliary side guide rail bar and the middle side guide rail bar are respectively fixed on the upper end faces of the first base boss, the second base boss and the fourth base boss, the main upper guide rail bar is arranged at the top of the main side guide rail bar, and the auxiliary upper guide rail bar is arranged at the top of the auxiliary side guide rail bar;

the sliding part comprises a main sliding block, a workbench, an auxiliary sliding block and a restrictor; the main sliding block is arranged in a rectangular cavity defined by a first boss of the base, a middle side guide rail bar, a main side guide rail bar and a main upper guide rail bar, the auxiliary sliding block is arranged in a U-shaped cavity defined by a second boss of the base, an auxiliary upper guide rail bar and an auxiliary side guide rail bar, two supporting legs are arranged at the bottom of the workbench, and the bottoms of the two supporting legs are respectively connected with the upper end faces of the main sliding block and the auxiliary sliding block;

the upper end surface and the lower end surface of the main sliding block, the side wall adjacent to the middle side guide rail bar and the side wall adjacent to the main side guide rail bar are respectively and symmetrically provided with two main sliding block right oil cavities, two main sliding block upper oil cavities, two main sliding block lower oil cavities and two main sliding block left oil cavities; the upper end surface and the lower end surface of the auxiliary sliding block are respectively and symmetrically provided with two auxiliary sliding block upper oil cavities and two auxiliary sliding block lower oil cavities;

a plurality of oil paths are arranged in the workbench, the main sliding block and the auxiliary sliding block, the plurality of oil paths are respectively communicated with the oil cavities in the main sliding block and the auxiliary sliding block, and two throttlers are arranged on each oil path leading to each oil cavity; the oil path is connected with an external lubricating oil supply device, and the lubricating oil supply device is connected with the oil collecting groove of the base.

The working principle of the invention is as follows:

after hydrostatic pressure lubricating oil is introduced into the hydrostatic pressure guide rail, hydrostatic pressure oil films are formed on the upper surfaces and the lower surfaces of the main sliding block and the auxiliary sliding block, vertical up-and-down movement of the sliding part of the guide rail is limited, hydrostatic pressure oil films are formed on the left side surface and the right side surface of the main sliding block, lateral left-and-right movement of the sliding part of the guide rail is limited, the linear motor drives the sliding part of the hydrostatic pressure guide rail to move in the front-and-back direction according to control input, two throttles which are installed in series in a workbench and lead to paths of oil cavities can adaptively adjust oil film pressure in real time according to changes of.

The hydrostatic guide rail can be provided with two throttlers with high dynamic characteristics in oil passages leading to the oil cavities, the pressure of the oil cavities is independently adjusted through the two throttlers, the throttling effect is strong, the bearing characteristic of the guide rail is good, the dynamic rigidity is high, the capability of inhibiting dynamic excitation is strong, the dynamic characteristics are good, high-precision linear motion of the hydrostatic guide rail is further realized, and the machining precision of a machine tool is improved.

Furthermore, the upper end surface and the lower end surface of the main sliding block, the side wall adjacent to the middle side guide rail bar and the side wall adjacent to the main side guide rail bar have certain gaps with the rectangular cavity; the upper end face and the lower end face of the auxiliary sliding block have certain gaps with the U-shaped cavity.

Furthermore, a first longitudinal workbench oil through hole and a second longitudinal workbench oil through hole are formed in the workbench, and are respectively communicated with oil passages leading to oil chambers of the main sliding block and oil passages leading to oil chambers of the auxiliary sliding block; the guide rail base is characterized in that a workbench oil inlet hole transversely penetrates through the workbench, the first longitudinal oil through hole of the workbench and the second longitudinal oil through hole of the workbench are communicated through the workbench oil inlet hole, the workbench oil inlet hole is communicated with a lubricating oil supply device, a base vertical oil return hole and a base horizontal oil return hole are formed in the bottom of the guide rail base, one end of the base horizontal oil return hole is communicated with the base vertical oil return hole, and the other end of the base horizontal oil return hole is communicated with the lubricating oil supply device.

Further, a first horizontal ladder oil through hole of the workbench and a first vertical ladder oil through hole of the workbench are arranged in the workbench, one end of the first horizontal ladder oil through hole of the workbench is communicated with the first longitudinal oil through hole of the workbench, the other end of the first horizontal ladder oil through hole of the workbench is communicated with the first vertical ladder oil through hole of the workbench, a first oil inlet hole of the main slide block and an oil inlet hole of a right oil cavity of the main slide block are arranged in the main slide block, one end of the first oil inlet hole of the main slide block is communicated with the first vertical ladder oil through hole of the workbench, the other end of the first oil inlet hole of the main slide block is communicated with the oil inlet hole of the right oil cavity of the main slide block, the oil inlet hole of the right oil cavity of the main slide block is communicated with;

a second horizontal step oil through hole of the workbench and a second vertical step oil through hole of the workbench are arranged in the workbench, one end of the second horizontal step oil through hole of the workbench is communicated with the first longitudinal oil through hole of the workbench, the other end of the second horizontal step oil through hole of the workbench is communicated with the second vertical step oil through hole of the workbench, a second oil inlet hole of the main slide block and a horizontal oil through hole of an upper oil cavity of the main slide block are arranged in the main slide block, one end of the second oil inlet hole of the main slide block is communicated with the second vertical step oil through hole of the workbench, the other end of the second oil inlet hole of the main slide block is communicated with the horizontal oil through hole of the upper oil cavity of the main slide block, the horizontal oil through hole of the upper oil cavity of the main slide block is communicated with;

a third horizontal step oil through hole of the workbench and a third vertical step oil through hole of the workbench are arranged in the workbench, one end of the third horizontal step oil through hole of the workbench is communicated with the first longitudinal oil through hole of the workbench, the other end of the third horizontal step oil through hole of the workbench is communicated with the third vertical step oil through hole of the workbench, a third oil inlet hole of the main slide block and a horizontal oil through hole of a lower oil cavity of the main slide block are arranged in the main slide block, one end of the third oil inlet hole of the main slide block is communicated with the third vertical step oil through hole of the workbench, the other end of the third oil inlet hole of the main slide block is communicated with the horizontal oil through hole of the lower oil cavity of the main slide block, the horizontal oil through hole of the lower oil cavity of the main slide block is communicated;

the oil hole structure is characterized in that a workbench fourth horizontal ladder oil hole and a workbench fourth vertical ladder oil hole are arranged in the workbench, one end of the workbench fourth horizontal ladder oil hole is communicated with the first vertical oil hole of the workbench, the other end of the workbench fourth vertical ladder oil hole is communicated with the workbench fourth vertical ladder oil hole, a main slider fourth oil inlet hole and a main slider left oil cavity oil inlet hole are arranged in the main slider, one end of the main slider fourth oil inlet hole is communicated with the workbench fourth vertical ladder oil hole, the other end of the main slider left oil cavity oil inlet hole is communicated with the main slider left oil cavity, a main slider left oil cavity oil inlet hole is communicated with the main slider left oil cavity, and throttlers are arranged in the workbench fourth horizontal ladder oil hole and the workbench fourth vertical ladder oil hole.

Furthermore, a sixth horizontal stepped oil through hole of the workbench and a sixth vertical stepped oil through hole of the workbench are arranged in the workbench, one end of the sixth horizontal stepped oil through hole of the workbench is communicated with the second longitudinal oil through hole of the workbench, the other end of the sixth horizontal stepped oil through hole of the workbench is communicated with the sixth vertical stepped oil through hole of the workbench, a first oil inlet hole of an auxiliary sliding block, a horizontal oil through hole of an auxiliary sliding block oil cavity and an oil inlet hole of an auxiliary sliding block oil cavity are arranged in the auxiliary sliding block and are sequentially communicated, the first oil inlet hole of the auxiliary sliding block is communicated with the sixth vertical stepped oil through hole of the workbench, the oil inlet hole of the auxiliary sliding block oil cavity is communicated with the auxiliary sliding block oil cavity, and throttles are respectively arranged in the sixth horizontal stepped oil through hole of the workbench and;

the oil hole structure is characterized in that a fifth horizontal step oil hole and a fifth vertical step oil hole are formed in the workbench, one end of the fifth horizontal step oil hole is communicated with the longitudinal oil hole of the workbench, the other end of the fifth horizontal step oil hole is communicated with the fifth vertical step oil hole of the workbench, an auxiliary slider second oil inlet hole, an auxiliary slider lower oil cavity horizontal oil hole and an auxiliary slider lower oil cavity oil inlet hole which are sequentially communicated are arranged in the auxiliary slider, the auxiliary slider second oil inlet hole is communicated with the fifth vertical step oil hole of the workbench, the auxiliary slider lower oil cavity oil inlet hole is communicated with the auxiliary slider lower oil cavity, and throttles are respectively arranged in the fifth horizontal step oil hole of the workbench and the fifth vertical step oil hole of the workbench.

Further, the driving assembly comprises a linear motor rotor, a rotor mounting plate, a linear motor stator and two stator mounting bars;

the rotor mounting plate is fixed on a first boss between two supporting legs on the lower end face of the workbench, the linear motor rotor is fixed on the side wall of the rotor mounting plate, the linear motor stator is fixed on a third boss of the base through two stator mounting bars, and the third boss of the base is arranged between a second boss of the base on the upper end face of the guide rail base and a fourth boss of the base.

Furthermore, the position measurement assembly comprises a grating ruler mounting plate, a grating ruler clamp, a reading head supporting seat, a reading head mounting plate and a reading head;

the grating ruler mounting plate is fixed on a second boss on one side of the lower end face of the workbench, the grating ruler is installed on the grating ruler mounting plate through a grating ruler clamp, the reading head supporting seat is fixed on the boss arranged on the outer side of the oil collecting tank of the base, the reading head mounting plate is fixed on the reading head supporting seat, and the reading head is fixed on the reading head mounting plate.

Furthermore, the cooling assembly comprises a rotor mounting plate, a first cooling copper pipe, a second cooling copper pipe and a copper pipe clamp;

the rotor mounting plate is internally provided with a rotor mounting plate longitudinal air hole, a rotor mounting plate vertical air hole and a rotor mounting plate transverse air hole which are communicated with each other, and the rotor mounting plate longitudinal air hole is connected with an external air cooler;

the first cooling copper pipe and the second cooling copper pipe are of U-shaped structures, two end parts of the first cooling copper pipe are respectively matched with the main sliding block and the auxiliary sliding block, and the first cooling copper pipe is fixed in the oil collecting tank of the base through a copper pipe clamp; the second cooling copper pipe is arranged on the stator mounting bar through a copper pipe clamp, and two ends of the second cooling copper pipe are respectively contacted with two outer side walls of the linear motor stator; and the first cooling copper pipe and the second cooling copper pipe are connected with an external first oil cooler.

Further, the protection assembly comprises four support bars, two side protection plates, a first end protection plate, two end wire outgoing clamps, two protection organ covers and a second end protection plate;

the first end protection plate and the second end protection plate are respectively fixed at two ends of the guide rail base, a wire outlet groove for arranging a reading head wire and a temperature sensor wire is formed in the first end protection plate, and the two end wire outlet clamps are arranged in the wire outlet groove of the first end protection plate; one protective organ cover is arranged between the workbench and the first end protection plate, and the other protective organ cover is arranged between the workbench and the second end protection plate; four support bars are respectively installed at four corners of the lower end surface of the workbench, and two side protection plates are respectively installed at the side walls of the workbench and the support bars.

The hydrostatic guide rail temperature maintaining system based on the improved precision comprises the hydrostatic guide rail, a temperature sensor, a data collector, a controller, an air cooler, a first oil cooler, a second oil cooler and a lubricating oil supply device;

the temperature sensors are respectively arranged in the inner area of the hydrostatic guide rail, the air outlet of the air cooler, the oil outlet of the first oil cooler, the oil outlet of the second oil cooler and the oil outlet of the lubricating oil supply device;

the input end of the data acquisition unit is connected with the temperature sensor, and the output end of the data acquisition unit is connected with the input end of the controller; the output end of the controller is connected with the control input ends of the air cooler, the first oil cooler and the second oil cooler;

the air cooler is connected with the liquid static pressure guide rail through an air pipe; the first oil cooler and the second oil cooler are respectively connected with the hydrostatic guide rail and the lubricating oil supply device through hydraulic hoses, and the lubricating oil supply device is connected with the hydrostatic guide rail through the hydraulic hoses.

And the controller controls the fluid temperature and supply flow rate in the air cooler, the first oil cooler, the second oil cooler and the lubricating oil supply device according to the control input and the temperature in the hydrostatic guide rail, and maintains the internal environment temperature of the hydrostatic guide rail.

The temperature maintaining system is provided with the air cooling channel and the oil cooling channel in the guide rail and is provided with the temperature control device, so that heat generated by motor resistance and viscous flow of lubricating oil can be taken away in real time, the internal environment temperature of the hydrostatic guide rail is maintained, local thermal deformation is prevented, and high thermal stability of the hydrostatic guide rail is realized.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the hydrostatic guide rail can be provided with two throttlers with high dynamic characteristics in oil passages leading to the oil cavities, the pressure of the oil cavities is independently adjusted through the two throttlers, the throttling effect is strong, the bearing characteristic of the guide rail is good, the dynamic rigidity is high, the capability of inhibiting dynamic excitation is strong, the dynamic characteristics are good, high-precision linear motion of the hydrostatic guide rail is further realized, and the machining precision of a machine tool is improved.

2. The invention uses two throttlers to carry out serial composite throttling, can reduce the manufacturing requirement of a single throttler, the consistency of the throttler is easier to ensure, and the installation position is open, thereby being beneficial to the assembly, debugging and maintenance of the guide rail.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic diagram of a hydrostatic guideway temperature maintenance system according to the present invention;

FIG. 2 is a schematic diagram of a section structure of a hydrostatic guideway and a right oil cavity oil circuit of a main slider;

FIG. 3 is a three-dimensional view of a hydrostatic guideway and a schematic view of a grating scale installation;

FIG. 4 is a top view of a hydrostatic guideway;

FIG. 5 is a schematic diagram of oil passages of oil cavities on a main slide block and an auxiliary slide block of the hydrostatic guideway;

FIG. 6 is a schematic view of oil passages of lower oil cavities of a main slide block and an auxiliary slide block of the hydrostatic guideway;

FIG. 7 is a schematic diagram of a left oil cavity oil way of a main slider of the hydrostatic guideway;

fig. 8 is a schematic view of an air passage of the mover mounting plate.

Reference numbers and corresponding part names in the drawings:

1. hydrostatic guide rail, 2, temperature sensor, 3, data collector, 4, controller, 5, air cooler, 6, first oil cooler, 7, second oil cooler, 8, lubricant oil supply device, 11, middle side guide rail bar, 12, main side guide rail bar, 13, main upper guide rail bar, 14, guide rail base, 15, main slider, 16, workbench, 17, linear motor mover, 18, mover mounting plate, 19, linear motor stator, 110, stator mounting bar, 111, auxiliary slider, 112, auxiliary upper guide rail bar, 113, auxiliary side guide rail bar, 114, support bar, 115, side shield plate, 116, grating ruler mounting plate, 117, grating ruler, 118, grating ruler clamp, 119, reading head support base, 120, reading head mounting plate, 121, reading head, 122, first end shield plate, 123, end wire clamp, 124, organ cover, 125, second end shield plate, 126, first cooling copper pipe, 127. second cooling copper tubing, 128, copper tubing clip, 141, base oil sump, 142, base first boss, 143, base second boss, 144, base third boss, 145, base fourth boss, 146, base vertical oil gallery, 147, base horizontal oil gallery, 151, main slider first oil inlet hole, 152, main slider right oil pocket oil inlet hole, 153, main slider right oil pocket, 154, main slider second oil inlet hole, 155, main slider upper oil pocket horizontal oil through hole, 156, main slider upper oil pocket oil inlet hole, 157, main slider upper oil pocket, 158, main slider third oil inlet hole, 159, main slider lower oil pocket horizontal oil through hole, 1510, main slider lower oil pocket oil inlet hole, 1511, main slider lower oil pocket, 1512, main slider fourth oil inlet hole, 1513, main slider left oil inlet hole, 1514, main slider left oil pocket, 161, table oil inlet hole, 162, table first longitudinal oil through hole, 163. a first horizontal step oil through hole of the workbench, 164, a second horizontal step oil through hole of the workbench, 165, a third horizontal step oil through hole of the workbench, 166, a fourth horizontal step oil through hole of the workbench, 167, a second longitudinal oil through hole of the workbench, 168, a fifth horizontal step oil through hole of the workbench, 169, a sixth horizontal step oil through hole of the workbench, 1610, a first vertical step oil through hole of the workbench, 1611, a second vertical step oil through hole of the workbench, 1612, a third vertical step oil through hole of the workbench, 1613, a fourth vertical step oil through hole of the workbench, 1614, a fifth vertical step oil through hole of the workbench, 1615, a sixth vertical step oil through hole of the workbench, 1111, an upper oil cavity of the auxiliary slider, 1112, an upper oil cavity of the auxiliary slider, 1113, a horizontal oil through hole of the upper oil cavity of the auxiliary slider, 1114, a first oil inlet hole of the auxiliary slider, an lower oil cavity of the auxiliary slider, 1116, a lower oil inlet hole of the auxiliary slider, 1117. the lower oil cavity of the auxiliary sliding block is provided with a horizontal oil through hole, 1118, a second oil inlet hole of the auxiliary sliding block, 181, a vertical vent hole of the rotor mounting plate, 182, a vertical vent hole of the rotor mounting plate, 183 and a horizontal vent hole of the rotor mounting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1-8, the hydrostatic guideway based on the improved accuracy comprises a supporting assembly, a driving assembly, a position measuring assembly, a cooling assembly and a protection assembly, wherein the supporting assembly comprises a fixed part and a sliding part;

the fixing part comprises a middle side guide rail bar 11, a main side guide rail bar 12, a main upper guide rail bar 13, a guide rail base 14, an auxiliary upper guide rail bar 112 and an auxiliary side guide rail bar 113, the upper end surface of the guide rail base 14 is provided with a base oil collecting groove 141, a base first boss 142, a base second boss 143 and a base fourth boss 145 are arranged in the base oil collecting groove 141, the main side guide rail bar 12, the auxiliary side guide rail bar 113 and the middle side guide rail bar 11 are respectively fixed on the upper end surfaces of the base first boss 142, the base second boss 143 and the base fourth boss 145, the main upper guide rail bar 13 is arranged on the top of the main side guide rail bar 12, and the auxiliary upper guide rail bar 112 is arranged on the top of the auxiliary side guide rail bar 113;

the sliding part comprises a main slider 15, a workbench 16, an auxiliary slider 111 and a throttle; the slider 15 is installed in a rectangular cavity defined by the first boss 142 of the base, the middle side guide rail bar 11, the main side guide rail bar 12 and the main upper guide rail bar 13, the auxiliary slider 111 is installed in a U-shaped cavity defined by the second boss 143 of the base, the auxiliary upper guide rail bar 112 and the auxiliary side guide rail bar 113, the bottom of the worktable 16 is provided with two support legs, the bottoms of the two support legs are respectively connected with the upper end surfaces of the main slider 15 and the auxiliary slider 111, and the upper end surface, the lower end surface, the side wall adjacent to the middle side guide rail bar 11 and the side wall adjacent to the main side guide rail bar 12 of the main slider 15 all have certain gaps with the rectangular cavity; the upper end face and the lower end face both have certain gaps with a U-shaped cavity, namely the height dimension of the main side guide rail bar 12 is slightly larger than the height dimension of the main slider 15, the assembly distance between the right side face of the middle side guide rail bar 11 and the left side face of the main side guide rail bar 12 is slightly larger than the width dimension of the main slider 15, oil film gaps for lubricating oil to flow out are reserved between the upper, lower, left and right surfaces of the main slider 15 and the matching surfaces thereof to form a supporting oil film, two auxiliary slider upper oil cavities 1111 and auxiliary slider lower oil cavities 1115 are respectively and symmetrically arranged on the upper surface and the lower surface of the auxiliary slider 111 in a front-back manner, the height dimension of the auxiliary side guide rail bar 113 is slightly larger than the height dimension of the auxiliary slider 111, and oil film gaps for lubricating oil to flow out are reserved between the upper;

the upper end surface and the lower end surface of the main slider 15, the side wall adjacent to the middle-side guide rail 11 and the side wall adjacent to the main side guide rail 12 are respectively and symmetrically provided with two main slider right oil cavities 153, two main slider upper oil cavities 157, two main slider lower oil cavities 1511 and two main slider left oil cavities 1514; two auxiliary slider upper oil cavities 1111 and two auxiliary slider lower oil cavities 1115 are symmetrically arranged on the upper end surface and the lower end surface of the auxiliary slider 111 respectively;

a plurality of oil paths are arranged in the workbench 16, the main slider 15 and the auxiliary slider 111, the plurality of oil paths are respectively communicated with oil cavities in the main slider 15 and the auxiliary slider 111, two throttles are respectively arranged on each oil path leading to each oil cavity, specifically, each oil path is provided with two conical threaded holes for installing the throttles, and each throttle is one or the combination of two of a small-hole throttler with conical external threads, a capillary throttler, a slit throttler, a porous throttler or other throttles; the oil path is connected with an external lubricating oil supply device 8, and the lubricating oil supply device 8 is connected with a base oil collecting groove 141; the specific structure of each oil path is as follows:

a first longitudinal workbench oil through hole 162 and a second longitudinal workbench oil through hole 167 are formed in the workbench 16, and the first longitudinal workbench oil through hole 162 and the second longitudinal workbench oil through hole 167 are respectively communicated with an oil path leading to each oil chamber of the main slider 15 and an oil path leading to each oil chamber of the auxiliary slider 111; transversely run through on the workstation 16 and be provided with workstation inlet port 161, the first vertical oil through hole 162 of workstation and the vertical oil through hole 167 of workstation second communicate through workstation inlet port 161, workstation inlet port 161 and lubricating oil feeding device 8 intercommunication, the bottom of guide rail base 14 is provided with the vertical oil return hole 146 of base, the horizontal oil return hole 147 of base one end and the vertical oil return hole 146 intercommunication of base, the other end and the lubricating oil feeding device 8 intercommunication, specifically:

the oil supply path of the main slider right oil chamber 153 is as follows: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench first longitudinal oil through hole 162 → the workbench first horizontal step oil through hole 163 → the workbench first vertical step oil through hole 1610 → the main slider first oil inlet hole 151 → the main slider right oil chamber oil inlet hole 152 → the main slider right oil chamber 153, the orifice parts of the workbench first horizontal step oil through hole 163 and the workbench first vertical step oil through hole 1610 are provided with conical threaded holes for mounting sealing plugs, the orifice part of the main slider first oil inlet hole 151 is provided with a groove for mounting an O-shaped sealing ring, and the step parts of the workbench first horizontal step oil through hole 163 and the workbench first vertical step oil through hole 1610 are provided with conical threaded holes for mounting throttlers, and the specific implementation structure is as follows:

a first horizontal step oil through hole 163 of the workbench and a first vertical step oil through hole 1610 of the workbench are arranged in the workbench 16, one end of the first horizontal step oil through hole 163 of the workbench is communicated with the first longitudinal oil through hole 162 of the workbench, the other end of the first horizontal step oil through hole is communicated with the first vertical step oil through hole 1610 of the workbench, a first oil inlet hole 151 of the main slider and a right oil chamber oil inlet hole 152 of the main slider are arranged in the main slider 15, one end of the first oil inlet hole 151 of the main slider is communicated with the first vertical step oil through hole 1610 of the workbench, the other end of the first oil inlet hole of the main slider is communicated with the right oil chamber oil inlet hole 152 of the main slider, the right oil chamber oil inlet hole 152 of the main slider is communicated with the right oil chamber 153 of the main slider, and both the first horizontal step oil through;

the oil supply path of the main slider upper oil chamber 157 is as follows: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench first longitudinal oil through hole 162 → the workbench second horizontal step oil through hole 164 → the workbench second vertical step oil through hole 1611 → the main slider second oil inlet hole 154 → the main slider upper oil chamber horizontal oil through hole 155 → the main slider upper oil chamber oil inlet hole 156 → the main slider upper oil chamber 157, the orifices of the workbench second horizontal step oil through hole 164, the workbench second vertical step oil through hole 1611 and the main slider upper oil chamber horizontal oil through hole 155 are provided with conical threaded holes for mounting seal plugs, the orifice of the main slider second oil inlet hole 154 is provided with a groove for mounting an O-shaped seal ring, and the steps of the workbench second horizontal step oil through hole 164 and the workbench second vertical step oil through hole 1611 are provided with conical threaded holes for mounting conical threaded holes, and the structure is as follows:

a second horizontal step oil through hole 164 and a second vertical step oil through hole 1611 are formed in the workbench 16, one end of the second horizontal step oil through hole 164 is communicated with the first longitudinal oil through hole 162, the other end of the second horizontal step oil through hole 1611 is communicated with the second vertical step oil through hole 1611, a second main slider oil inlet hole 154 and a horizontal main slider upper oil cavity oil through hole 155 are formed in the main slider 15, one end of the second main slider oil inlet hole 154 is communicated with the second vertical step oil through hole 1611, the other end of the second main slider oil inlet hole is communicated with the horizontal main slider upper oil cavity oil through hole 155, the horizontal main slider upper oil cavity oil through hole 155 is communicated with the upper main slider oil cavity 157, and throttlers are mounted in the second horizontal step oil through hole 164 and the second vertical step oil through hole 1611;

the oil supply path of the main slider lower oil chamber 1511 is: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench first longitudinal oil through hole 162 → the workbench third horizontal step oil through hole 165 → the workbench third vertical step oil through hole 1612 → the main slider third oil inlet hole 158 → the main slider lower oil chamber horizontal oil through hole 159 → the main slider lower oil chamber oil inlet hole 1510 → the main slider lower oil chamber 1511, the orifices of the workbench third horizontal step oil through hole 165, the workbench third vertical step oil through hole 1612 and the main slider lower oil chamber horizontal oil through hole 159 are provided with conical threaded holes for mounting seal plugs, the orifice of the main slider third oil inlet hole 158 is provided with a groove for mounting an O-shaped seal ring, and the steps of the workbench third horizontal step oil through hole 165 and the workbench third vertical step oil through hole 1612 are provided with conical threaded holes for mounting an O-shaped seal ring, and the structure is specifically realized as follows:

a third workbench horizontal stepped oil through hole 165 and a third workbench vertical stepped oil through hole 1612 are formed in the workbench 16, one end of the third workbench horizontal stepped oil through hole 165 is communicated with the first workbench longitudinal oil through hole 162, the other end of the third workbench horizontal stepped oil through hole 1612 is communicated with the third workbench vertical stepped oil through hole 1612, a third main slider oil inlet hole 158 and a horizontal main slider lower oil chamber oil through hole 159 are formed in the main slider 15, one end of the third main slider oil inlet hole 158 is communicated with the third workbench vertical stepped oil through hole 1612, the other end of the third main slider oil inlet hole is communicated with the horizontal main slider lower oil chamber oil through hole 159, the horizontal main slider lower oil chamber oil through 159 is communicated with the lower main slider oil chamber 1511, and throttles are respectively installed in the third workbench horizontal stepped oil through hole 165 and the third workbench vertical stepped oil through hole 1612;

the oil supply path for the main slider left oil chamber 1514 is: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench first longitudinal oil through hole 162 → the workbench fourth horizontal step oil through hole 166 → the workbench fourth vertical step oil through hole 1613 → the main slider fourth oil inlet hole 1512 → the main slider left oil chamber oil inlet hole 1513 → the main slider left oil chamber 1514, the orifices of the workbench fourth horizontal step oil through hole 166 and the workbench fourth vertical step oil through hole 1613 are provided with conical threaded holes for mounting sealing plugs, the orifice of the main slider fourth oil inlet hole 1512 is provided with a groove for mounting an O-ring, and the steps of the workbench fourth horizontal step oil through hole 166 and the workbench fourth vertical step oil through hole 1613 are provided with conical threaded holes for mounting throttles, and the specific implementation structure is as follows:

a fourth horizontal ladder oil through hole 166 and a fourth vertical ladder oil through hole 1613 are arranged in the workbench 16, one end of the fourth horizontal ladder oil through hole 166 is communicated with the first longitudinal workbench oil through hole 162, the other end of the fourth horizontal ladder oil through hole 1613 is communicated with the fourth vertical workbench oil through hole 1613, a fourth main slider oil inlet hole 1512 and a left main slider oil chamber oil inlet hole 1513 are arranged in the main slider 15, one end of the fourth main slider oil inlet hole 1512 is communicated with the fourth vertical ladder oil through hole 1613, the other end of the fourth main slider oil inlet hole 1512 is communicated with the left main slider oil chamber oil inlet hole 1513, the left main slider oil chamber oil inlet hole 1513 is communicated with the left main slider oil chamber 1514, and throttlers are respectively arranged in the fourth horizontal ladder oil through hole 166 and the fourth vertical workbench oil through hole 1613;

the oil supply path of the oil cavity 1111 on the auxiliary sliding block is as follows: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench second longitudinal oil through hole 167 → the workbench sixth horizontal step oil through hole 169 → the workbench sixth vertical step oil through hole 1615 → the first oil inlet hole 1114 of the auxiliary slider → the horizontal oil through hole 1113 of the upper oil cavity of the auxiliary slider → the oil inlet hole 1112 of the upper oil cavity of the auxiliary slider → the upper oil cavity 1111 of the auxiliary slider, the orifices of the sixth horizontal step oil through hole 169 of the workbench, the sixth vertical step oil through hole 1615 of the workbench and the horizontal oil through hole 1113 of the upper oil cavity of the auxiliary slider are provided with conical threaded holes for installing sealing plugs, the orifices of the upper oil cavity oil through hole 1112 of the auxiliary slider are provided with grooves for installing O-shaped sealing rings, and the steps of the sixth horizontal step oil through hole 169 of the workbench and the sixth vertical step oil through hole 1615 of the workbench are provided with conical threaded holes for installation, and the concrete realization:

a sixth horizontal stepped oil through hole 169 of the workbench and a sixth vertical stepped oil through hole 1615 of the workbench are arranged in the workbench 16, one end of the sixth horizontal stepped oil through hole 169 of the workbench is communicated with the second longitudinal oil through hole 167 of the workbench, the other end of the sixth horizontal stepped oil through hole is communicated with the sixth vertical stepped oil through hole 1615 of the workbench, a first oil inlet hole 1114 of an auxiliary sliding block, a horizontal oil through hole 1113 of an upper oil cavity of the auxiliary sliding block and an oil inlet hole 1112 of an upper oil cavity of the auxiliary sliding block are sequentially communicated with each other and are arranged in the auxiliary sliding block 111, the first oil inlet hole 1114 of the auxiliary sliding block is communicated with the sixth vertical stepped oil through hole 1615 of the workbench, the oil inlet hole 1112 of a restrictor of the auxiliary sliding block is communicated with the upper oil cavity 1111 of the auxiliary sliding block, and the sixth horizontal stepped oil through hole 169 of;

the oil supply path of the auxiliary slider lower oil cavity 1115 is as follows: the lubricating oil supply device 8 → the workbench oil inlet hole 161 → the workbench second longitudinal oil through hole 167 → the workbench fifth horizontal step oil through hole 168 → the workbench fifth vertical step oil through hole 1614 → the auxiliary slider second oil inlet hole 1118 → the auxiliary slider lower oil chamber horizontal oil through hole 1117 → the auxiliary slider lower oil chamber oil inlet hole 1116 → the auxiliary slider lower oil chamber 1115, the orifices of the workbench fifth horizontal step oil through hole 168, the workbench fifth vertical step oil through hole 1614 and the auxiliary slider lower oil chamber horizontal oil through hole 1117 are provided with conical threaded holes for mounting sealing plugs, the orifice of the auxiliary slider second oil inlet hole 1118 is provided with a groove for mounting an O-shaped sealing ring, and the steps of the workbench fifth horizontal step oil through hole 168 and the workbench fifth vertical step oil through hole 1614 are provided with conical threaded holes for mounting throttlers, and the structure is specifically realized as follows:

the novel oil-saving device is characterized in that a workbench fifth horizontal step oil through hole 168 and a workbench fifth vertical step oil through hole 1614 are arranged in the workbench 16, one end of the workbench fifth horizontal step oil through hole 168 is communicated with the workbench second longitudinal oil through hole 167, the other end of the workbench fifth vertical step oil through hole 1614 is communicated with the workbench, an auxiliary slider second oil inlet hole 1118, an auxiliary slider lower oil cavity horizontal oil through hole 1117 and an auxiliary slider lower oil cavity oil inlet hole 1116 which are sequentially communicated are arranged in the auxiliary slider 111, the auxiliary slider second oil inlet hole 1118 is communicated with the workbench fifth vertical step oil through hole 1614, the auxiliary slider lower oil cavity oil inlet hole 1116 is communicated with an auxiliary slider lower oil cavity 1115, and throttlers are respectively arranged in the workbench fifth horizontal step oil through hole 168 and the workbench fifth vertical step oil through hole 1614.

In the present embodiment, the driving assembly includes a linear motor mover 17, a mover mounting plate 18, a linear motor stator 19, and two stator mounting bars 110;

the active cell mounting plate 18 is fixed on a first boss between two support legs on the lower end face of the workbench 16, the linear motor active cell 17 is fixed on the side wall of the active cell mounting plate 18, the linear motor stator 19 is fixed on a base third boss 144 through two stator mounting bars 110, and the base third boss 144 is arranged between a base second boss 143 and a base fourth boss 145 on the upper end face of the guide rail base 14.

The position measurement assembly comprises a grating ruler mounting plate 116, a grating ruler 117, a grating ruler clamp 118, a reading head support seat 119, a reading head mounting plate 120 and a reading head 121;

grating chi mounting panel 116 is fixed on the second boss of terminal surface one side under the workstation 16, and grating chi 117 passes through grating chi clamp 118 and installs on grating chi mounting panel 116, and reading head supporting seat 119 is fixed on the boss that the base oil trap 141 outside set up, and reading head mounting panel 120 is fixed on reading head supporting seat 119, and reading head 121 is fixed on reading head mounting panel 120, reading head supporting seat 119 and guide rail base 14's mounting hole and the mounting hole between reading head mounting panel 120 and reading head supporting seat 119 are waist type through-hole, are convenient for adjust reading head 121 position reinforcing measuring signal.

The cooling assembly includes a mover mounting plate 18, a first cooling copper tube 126, a second cooling copper tube 127, and a copper tube clamp 128. A rotor mounting plate longitudinal vent hole 181 for introducing cooling gas, a rotor mounting plate vertical vent hole 182 and a rotor mounting plate transverse vent hole 183 are arranged in the rotor mounting plate 18 and close to the mounting surface of the linear motor rotor 17, a conical threaded hole for mounting an air pipe joint or a sealing plug is arranged at the orifice of the rotor mounting plate longitudinal vent hole 181, the rotor mounting plate longitudinal vent hole 181 is communicated with the rotor mounting plate vertical vent hole 182 and the rotor mounting plate transverse vent hole 183, and the rotor mounting plate longitudinal vent hole 181 is connected with the air cooler 5 through a pipe joint and an air pipe. The first cooling copper pipe 126 and the second cooling copper pipe 127 are of a U-shaped structure, the left branch of the first cooling copper pipe 126 is arranged below the auxiliary sliding block 111, the left side surface of the first cooling copper pipe is in contact with the right side surface of the second boss 143 of the base, the right branch of the first cooling copper pipe 126 is arranged below the main sliding block 15, the right side surface of the main sliding block is in contact with the left side surface of the first boss 142 of the base, the first cooling copper pipe is fixed in the oil collecting groove 141 of the base through a copper pipe clamp 128, and the second cooling copper pipe 127 is arranged on the upper surface of the stator mounting bar 110 through the copper pipe clamp 128. The first cooling copper pipe 126 and the second cooling copper pipe 127 are connected with the first oil cooler 6 through pipe joints and hydraulic hoses.

The guard assembly includes four support bars 114, two side guard plates 115, a first end guard plate 122, two end wire outgoing clips 123, two guard organ covers 124, and a second end guard plate 125;

the first end protection plate 122 and the second end protection plate 125 are respectively fixed at two ends of the guide rail base 14, the first end protection plate 122 is provided with wire outgoing grooves for arranging reading head wires and temperature sensor wires, and the two end wire outgoing clamps 123 are installed in the wire outgoing grooves of the first end protection plate 122; one of the organ covers 124 is disposed between the table 16 and the first end guard plate 122, and the other of the organ covers 124 is disposed between the table 16 and the second end guard plate 125; four support bars 114 are respectively installed at four corners of the lower end surface of the work table 16, and two side shield plates 115 are respectively installed at the side walls of the work table 16 and the support bars 114.

In the embodiment, after the hydrostatic guide rail 1 is filled with hydrostatic lubricating oil, hydrostatic oil films are formed on the upper and lower surfaces of the main slider 15 and the auxiliary slider 111, the vertical movement of the sliding part of the guide rail is limited, the hydrostatic oil films are formed on the left and right side surfaces of the main slider 15, the left and right lateral movement of the sliding part of the guide rail is limited, two throttles which are installed in series in a workbench 16 and lead to the paths of oil chambers can adaptively adjust the oil film pressure in real time according to the change of external load, and a linear motor drives the sliding part of the hydrostatic guide rail 1 to move in the front-back direction according to control input, so that the high-precision linear movement of the.

Example 2:

in this embodiment, based on embodiment 1, the heights of the first base boss 142 and the second base boss 143 are the same, the heights of the main slider 15 and the auxiliary slider 111 are the same, and the heights of the main side guide rail 12 and the auxiliary side guide rail 113 are the same; the same throttleer is installed at the step positions of the first horizontal step oil through hole 163 of the workbench, the second horizontal step oil through hole 164 of the workbench, the third horizontal step oil through hole 165 of the workbench, the fourth horizontal step oil through hole 166 of the workbench, the fifth horizontal step oil through hole 168 of the workbench and the sixth horizontal step oil through hole 169 of the workbench, and the same throttleer is installed at the step positions of the first vertical step oil through hole 1610 of the workbench, the second vertical step oil through hole 1611 of the workbench, the third vertical step oil through hole 1612 of the workbench, the fourth vertical step oil through hole 1613 of the workbench, the fifth vertical step oil through hole 1614 of the workbench and the sixth vertical step oil through hole 1615 of the workbench.

Example 3:

the hydrostatic guideway temperature maintenance system based on the improved precision comprises the hydrostatic guideway 1 described in embodiment 1 or embodiment 2, and further comprises a temperature sensor 2, a data collector 3, a controller 4, an air cooler 5, a first oil cooler 6, a second oil cooler 7 and a lubricating oil supply device 8;

the temperature sensors 2 are respectively arranged in the inner area of the hydrostatic guideway 1, the air outlet of the air cooler 5, the oil outlet of the first oil cooler 6, the oil outlet of the second oil cooler 7 and the oil outlet of the lubricating oil supply device 8;

the input end of the data acquisition unit 3 is connected with the temperature sensor 2, and the output end of the data acquisition unit is connected with the input end of the controller 4; the output end of the controller 4 is connected with the control input ends of the air cooler 5, the first oil cooler 6 and the second oil cooler 7;

the air cooler 5 is connected with the liquid static pressure guide rail 1 through an air pipe; the first oil cooler 6 and the second oil cooler 7 are respectively connected with the hydrostatic guide rail 1 and a lubricating oil supply device 8 through hydraulic hoses, and the lubricating oil supply device 8 is connected with the hydrostatic guide rail 1 through a hydraulic hose.

In the embodiment, after the hydrostatic guide rail 1 is filled with hydrostatic lubricating oil, hydrostatic oil films are formed on the upper and lower surfaces of the main slider 15 and the auxiliary slider 111, the vertical motion of the sliding part of the guide rail is limited, the hydrostatic oil films are formed on the left and right side surfaces of the main slider 15, the left and right lateral motion of the sliding part of the guide rail is limited, two throttles which are installed in series in a workbench 16 and lead to paths of oil cavities can adaptively adjust the oil film pressure in real time according to the change of external load, and a linear motor drives the sliding part of the hydrostatic guide rail 1 to move in the front-back direction according to control input, so that the high-precision linear motion of the. The controller 4 controls the fluid temperature and supply flow rate in the cooling fan 5, the first oil cooler 6, the second oil cooler 7, and the lubricating oil supply device 8 according to the control input and the temperature inside the hydrostatic guideway 1, and maintains the temperature inside the hydrostatic guideway 1, thereby achieving high thermal stability of the hydrostatic guideway 1.

The upper, lower, left and right in this embodiment are relative to the drawings.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The hydrostatic guideway based on the improved precision comprises a supporting assembly, a driving assembly, a position measuring assembly, a cooling assembly and a protection assembly, and is characterized in that the supporting assembly comprises a fixed part and a sliding part;

the fixing part comprises a middle side guide rail bar (11), a main side guide rail bar (12), a main upper guide rail bar (13), a guide rail base (14), an auxiliary upper guide rail bar (112) and an auxiliary side guide rail bar (113), the upper end face of the guide rail base (14) is provided with a base oil collecting groove (141), a base first boss (142), a base second boss (143) and a base fourth boss (145) are arranged in the base oil collecting groove (141), the main side guide rail bar (12), the auxiliary side guide rail bar (113) and the middle side guide rail bar (11) are respectively fixed on the upper end faces of the base first boss (142), the base second boss (143) and the base fourth boss (145), the main upper guide rail bar (13) is arranged at the top of the main side guide rail bar (12), and the auxiliary upper guide rail bar (112) is arranged at the top of the auxiliary side guide rail bar (113);

the sliding part comprises a main sliding block (15), a workbench (16), an auxiliary sliding block (111) and a throttler; the slide block (15) is arranged in a rectangular cavity defined by a first boss (142) of the base, a middle guide rail bar (11), a main side guide rail bar (12) and a main upper guide rail bar (13), the auxiliary slide block (111) is arranged in a U-shaped cavity defined by a second boss (143) of the base, an auxiliary upper guide rail bar (112) and an auxiliary side guide rail bar (113), two support legs are arranged at the bottom of the workbench (16), and the bottoms of the two support legs are respectively connected with the upper end faces of the main slide block (15) and the auxiliary slide block (111);

the upper end surface and the lower end surface of the main slider (15), the side wall adjacent to the middle side guide rail (11) and the side wall adjacent to the main side guide rail (12) are respectively and symmetrically provided with two main slider right oil cavities (153), two main slider upper oil cavities (157), two main slider lower oil cavities (1511) and two main slider left oil cavities (1514); two auxiliary slider upper oil cavities (1111) and two auxiliary slider lower oil cavities (1115) are respectively and symmetrically arranged on the upper end surface and the lower end surface of the auxiliary slider (111);

a plurality of oil passages are arranged in the workbench (16), the main sliding block (15) and the auxiliary sliding block (111), the plurality of oil passages are respectively communicated with oil cavities in the main sliding block (15) and the auxiliary sliding block (111), and two throttles are arranged on each oil passage leading to each oil cavity; the oil path is connected with an external lubricating oil supply device (8), and the lubricating oil supply device (8) is connected with a base oil collecting groove (141).

2. The hydrostatic guideway with improved accuracy according to claim 1, characterized in that the upper end surface and the lower end surface of the main slider (15), the side wall adjacent to the central side guide rail (11) and the side wall adjacent to the main side guide rail (12) are all spaced from the rectangular cavity; the upper end face and the lower end face of the auxiliary sliding block (111) have certain gaps with the U-shaped cavity.

3. The hydrostatic guideway based on the enhanced precision of claim 1, characterized in that a first longitudinal table oil through hole (162) and a second longitudinal table oil through hole (167) are provided in the table (16), the first longitudinal table oil through hole (162) and the second longitudinal table oil through hole (167) being respectively communicated with an oil passage to each oil chamber of the main slider (15) and an oil passage to each oil chamber of the auxiliary slider (111); transversely run through on workstation (16) and be provided with workstation inlet port (161), workstation first vertical oil through hole (162) and workstation second vertical oil through hole (167) communicate through workstation inlet port (161), workstation inlet port (161) and lubricating oil feeding device (8) intercommunication, the bottom of guide rail base (14) is provided with the vertical oil gallery of base (146), the horizontal oil gallery of base (147) one end and the vertical oil gallery of base (146) intercommunication, the other end and lubricating oil feeding device (8) intercommunication.

4. The hydrostatic guideway based on the enhanced precision of claim 3, wherein a first horizontal step oil through hole (163) and a first vertical step oil through hole (1610) are provided in the table (16), one end of the first horizontal step oil through hole (163) communicates with the first longitudinal oil through hole (162) and the other end communicates with the first vertical step oil through hole (1610), a first main slider oil inlet hole (151) and a right main slider oil chamber oil inlet hole (152) are provided in the main slider (15), one end of the first main slider oil inlet hole (151) communicates with the first vertical step oil through hole (1610), the other end communicates with the right main slider oil chamber oil inlet hole (152), the right main slider oil inlet hole (152) communicates with the right main slider oil chamber (153), and both the first horizontal step oil through hole (163) and the first vertical step oil through hole (1610) are provided therein A restrictor;

a second horizontal step oil through hole (164) and a second vertical step oil through hole (1611) are arranged in the workbench (16), one end of the second horizontal stepped oil through hole (164) of the workbench is communicated with the first longitudinal oil through hole (162) of the workbench, the other end is communicated with the second vertical stepped oil through hole (1611) of the workbench, a second oil inlet hole (154) of the main sliding block and a horizontal oil through hole (155) of an upper oil cavity of the main sliding block are arranged in the main sliding block (15), one end of the second oil inlet hole (154) of the main sliding block is communicated with the second vertical ladder oil through hole (1611) of the workbench, the other end is communicated with the horizontal oil through hole (155) of the upper oil cavity of the main sliding block, the horizontal oil through hole (155) of the upper oil cavity of the main sliding block is communicated with the upper oil cavity (157) of the main sliding block, throttles are arranged in the second horizontal step oil through hole (164) of the workbench and the second vertical step oil through hole (1611) of the workbench;

a third horizontal step oil through hole (165) and a third vertical step oil through hole (1612) are arranged in the workbench (16), one end of the third horizontal stepped oil through hole (165) of the workbench is communicated with the first longitudinal oil through hole (162) of the workbench, the other end of the third horizontal stepped oil through hole is communicated with the third vertical stepped oil through hole (1612) of the workbench, a third oil inlet hole (158) of the main sliding block and a horizontal oil through hole (159) of a lower oil cavity of the main sliding block are arranged in the main sliding block (15), one end of a third oil inlet hole (158) of the main sliding block is communicated with a third vertical step oil through hole (1612) of the workbench, the other end is communicated with a horizontal oil through hole (159) of a lower oil chamber of the main sliding block, the main slider lower oil chamber horizontal oil through hole (159) is communicated with the main slider lower oil chamber (1511), throttlers are arranged in the third horizontal stepped oil through hole (165) of the workbench and the third vertical stepped oil through hole (1612) of the workbench;

a fourth horizontal step oil through hole (166) and a fourth vertical step oil through hole (1613) are arranged in the workbench (16), one end of the fourth horizontal stepped oil through hole (166) of the workbench is communicated with the first longitudinal oil through hole (162) of the workbench, the other end is communicated with the fourth vertical stepped oil through hole (1613) of the workbench, a fourth oil inlet hole (1512) of the main slide block and an oil inlet hole (1513) of a left oil cavity of the main slide block are arranged in the main slide block (15), one end of a fourth oil inlet hole (1512) of the main sliding block is communicated with a fourth vertical step oil through hole (1613) of the workbench, the other end of the fourth oil inlet hole (1512) of the main sliding block is communicated with an oil inlet hole (1513) of a left oil cavity of the main sliding block, the main slider left oil cavity oil inlet hole (1513) is communicated with the main slider left oil cavity (1514), throttles are arranged in the fourth horizontal step oil through hole (166) of the workbench and the fourth vertical step oil through hole (1613) of the workbench.

5. The hydrostatic guideway based on the improved precision of claim 3, wherein a sixth horizontal stepped oil through hole (169) and a sixth vertical stepped oil through hole (1615) are provided in the worktable (16), one end of the sixth horizontal stepped oil through hole (169) is communicated with the second longitudinal oil through hole (167), the other end is communicated with the sixth vertical stepped oil through hole (1615), a first auxiliary sliding block oil inlet hole (1114), a horizontal auxiliary sliding block oil chamber oil through hole (1113) and an upper auxiliary sliding block oil chamber oil inlet hole (1112) are provided in the auxiliary sliding block (111) and are sequentially communicated, the first auxiliary sliding block oil inlet hole (1114) is communicated with the sixth vertical stepped oil through hole (1615), the upper auxiliary sliding block oil chamber oil inlet hole (1112) is communicated with the upper auxiliary sliding block oil chamber (1111), and the sixth horizontal working table oil through hole (169) and the sixth vertical stepped oil through hole (1615) are provided therein, and the upper working table oil chamber oil inlet hole (1111) is communicated with the auxiliary sliding block oil chamber oil inlet hole (1112) A flow device;

a fifth horizontal ladder oil through hole (168) and a fifth vertical ladder oil through hole (1614) are arranged in the workbench (16), one end of a fifth horizontal step oil through hole (168) of the workbench is communicated with the second longitudinal oil through hole (167) of the workbench, the other end of the fifth horizontal step oil through hole is communicated with a fifth vertical step oil through hole (1614) of the workbench, a second oil inlet hole (1118) of the auxiliary sliding block, a horizontal oil through hole (1117) of the lower oil cavity of the auxiliary sliding block and an oil inlet hole (1116) of the lower oil cavity of the auxiliary sliding block are arranged in the auxiliary sliding block (111) and are communicated with each other in sequence, the second oil inlet hole (1118) of the auxiliary sliding block is communicated with a fifth vertical step oil through hole (1614) of the workbench, the oil inlet hole (1116) of the lower oil cavity of the auxiliary sliding block is communicated with the lower oil cavity (1115) of the auxiliary sliding block, throttles are arranged in the fifth horizontal step oil through hole (168) of the workbench and the fifth vertical step oil through hole (1614) of the workbench.

6. The hydrostatic guideway based on enhanced precision of claim 1, characterized in that the drive assembly includes a linear motor mover (17), a mover mounting plate (18), a linear motor stator (19) and two stator mounting bars (110);

the utility model discloses a guide rail base, including workstation (16), linear electric motor active cell (17), linear electric motor stator (19), base third boss (144) set up between guide rail base (14) up end base second boss (143) and base fourth boss (145), the active cell mounting panel (18) are fixed on the first boss between two landing legs of workstation (16) lower terminal surface, linear electric motor active cell (17) are fixed at active cell mounting panel (18) lateral wall, and linear electric motor stator (110) are fixed on base third boss (144) through two stator mounting bars (110).

7. The hydrostatic guideway based on enhanced precision of claim 1, wherein the position measurement assembly includes a grating ruler mounting plate (116), a grating ruler (117), a grating ruler clamp (118), a reading head support (119), a reading head mounting plate (120), and a reading head (121);

grating chi mounting panel (116) are fixed on second boss (143) of workstation (16) lower extreme surface one side, and grating chi (117) are installed on grating chi mounting panel (116) through grating chi clamp (118), and reading head supporting seat (119) are fixed on the boss that base oil trap (141) outside set up, and reading head mounting panel (120) are fixed on reading head supporting seat (119), and reading head (121) are fixed on reading head mounting panel (120).

8. The hydrostatic guideway based on enhanced precision of claim 1, characterized in that the cooling assembly includes a mover mounting plate (18), a first cooling copper pipe (126), a second cooling copper pipe (127), and a copper pipe clamp (128);

the mover mounting plate (18) is internally provided with a mover mounting plate longitudinal vent hole (181), a mover mounting plate vertical vent hole (182) and a mover mounting plate transverse vent hole (183) which are communicated with each other, and the mover mounting plate longitudinal vent hole (181) is connected with an air cooler (5);

the first cooling copper pipe (126) and the second cooling copper pipe (127) are of U-shaped structures, two end parts of the first cooling copper pipe (126) are respectively matched with the main sliding block (15) and the auxiliary sliding block (111), and the first cooling copper pipe (126) is fixed in the oil collecting groove (141) of the base through a copper pipe clamp (128); the second cooling copper pipe (127) is mounted on the stator mounting bar (110) through a copper pipe clamp (128), and two ends of the second cooling copper pipe (127) are respectively contacted with two outer side walls of the linear motor stator (19); the first cooling copper pipe (126) and the second cooling copper pipe (127) are connected with an external first oil cooler (6).

9. The hydrostatic guideway based on improved accuracy of claim 1, characterized in that the shield assembly includes four support bars (114), two side shields (115), a first end shield (122), two end breakout clips (123), two accordion shields (124), and a second end shield (125);

the first end protection plate (122) and the second end protection plate (125) are respectively fixed at two ends of the guide rail base (14), a wire outlet groove for arranging a reading head wire and a temperature sensor wire is formed in the first end protection plate (122), and the two end wire outlet clamps (123) are arranged in the wire outlet groove of the first end protection plate (122); one of the organ protection covers (124) is arranged between the workbench (16) and the first end protection plate (122), and the other organ protection cover (124) is arranged between the workbench (16) and the second end protection plate (125); four supporting bars (114) are respectively arranged at four corners of the lower end surface of the workbench (16), and two side protection plates (115) are respectively arranged at the side walls of the workbench (16) and the supporting bars (114).

10. The hydrostatic guideway temperature maintenance system based on the improved precision is characterized by comprising the hydrostatic guideway (1) of any one of claims 1 to 9, a temperature sensor (2), a data collector (3), a controller (4), an air cooler (5), a first oil cooler (6), a second oil cooler (7) and a lubricating oil supply device (8);

the temperature sensors (2) are arranged in the inner area of the hydrostatic guide rail (1), the air outlet of the air cooler (5), the oil outlet of the first oil cooler (6), the oil outlet of the second oil cooler (7) and the oil outlet of the lubricating oil supply device (8) respectively;

the input end of the data acquisition unit (3) is connected with the temperature sensor (2), and the output end of the data acquisition unit is connected with the input end of the controller (4); the output end of the controller (4) is connected with the control input ends of the air cooler (5), the first oil cooler (6) and the second oil cooler (7);

the air cooler (5) is connected with the hydrostatic guide rail (1) through an air pipe; the first oil cooler (6) and the second oil cooler (7) are respectively connected with the hydrostatic guide rail (1) and the lubricating oil supply device (8) through hydraulic hoses, and the lubricating oil supply device (8) is connected with the hydrostatic guide rail (1) through the hydraulic hoses.