CN205008859U - Hydrostatic guideway system - Google Patents
Hydrostatic guideway system Download PDFInfo
- Publication number
- CN205008859U CN205008859U CN201520641476.3U CN201520641476U CN205008859U CN 205008859 U CN205008859 U CN 205008859U CN 201520641476 U CN201520641476 U CN 201520641476U CN 205008859 U CN205008859 U CN 205008859U
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- Prior art keywords
- positive electrode
- oil pocket
- guide rail
- slide carriage
- fluid
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Abstract
The utility model discloses a hydrostatic guideway system relates to accurate machine tool's hydraulic pressure supporting member's fuel feeding technical field, and this system includes: guide rail, carriage apron, at least one first control ware and at least one the second controllor, guide rail are " T " font, and including supporting part and guide part, the carriage apron cladding is full of electrorheological fluids in the periphery of guide part between carriage apron and the guide part, and the one end of first control ware is fixed on the guide rail, and the other end is fixed on the carriage apron, and the second controllor's one end is fixed on the guide rail, and the other end is fixed on the carriage apron, the first control ware includes first oil pocket, and the second controllor includes the second oil pocket, through controlling electric field strength and the electric field strength in the second oil pocket in the first oil pocket, keep the electrorheological fluids's between carriage apron and the guide part thickness unchangeable. Above -mentioned system is applied to hydrostatic guideway with electrorheological fluids, adjusts with the mechanical type and compares, can adjust electrorheological fluids's thickness in the time of millisecond level, and it is fast to have a response speed, the advantage of control range guangZhou.
Description
Technical field
The utility model relates to machine tool fluid pressure guide rail field, particularly a kind of hydrostatic guide rail system.
Background technology
Hydrostatic slideway, referred to as hydraulic pressure guide rail, is the oil pocket fluid with certain pressure being transported to guide pass through flow controller, forms carrying oil film, is separated the metal surface contacted with each other, realize fluid friction.
Because hydrostatic slideway without the work of wearing and tearing in very wide velocity interval (comprising static) and load range, and can be widely used in ultra-precision machine tool.In real work, do not consider the impact of temperature, hydraulic pressure oil viscosity is constant substantially.Load-carrying properties corresponding to each oil pocket are also fixing, and therefore, each oil pocket must be connected a flow controller, are used for the flow of regulator solution force feed, after the change adapting to load, and the thickness of the hydraulic oil between guide rail and slide carriage.
But these mechanical types regulate and are difficult to adjust oil film thickness in very short time, and then can affect crudy.
Utility model content
For defect of the prior art, the utility model provides a kind of hydrostatic guide rail system, and this system can make the thickness of ER fluid remain unchanged when load changes within the extremely short time, and then improves crudy.
The utility model provides a kind of hydrostatic guide rail system, it is characterized in that, comprise: guide rail, slide carriage, at least one first controller and at least one second controller, described guide rail is in " T " font, comprise support portion and guide part, described slide carriage is coated on the periphery of described guide part, ER fluid is full of between described slide carriage and described guide part, one end of described first controller is fixed on described guide rail, the other end is fixed on described slide carriage, one end of described second controller is fixed on described guide rail, the other end is fixed on described slide carriage, and described first controller and described second controller are oppositely arranged,
Described first controller comprises the first oil pocket, and described second controller comprises the second oil pocket;
By controlling the electric-field intensity in described first oil pocket and the electric-field intensity in the second oil pocket, keep the thickness of the ER fluid between described slide carriage and described guide part constant.
Optionally, described first controller comprises: the first positive electrode and the first negative electrode, described first positive electrode is fixed on the first side of described slide carriage, described first side is towards described ER fluid, described first negative electrode is fixed on described guide part, and relative with described first positive electrode, form the first oil pocket;
Described second controller comprises: the second positive electrode and the second negative electrode, described second positive electrode is fixed on the second side of described slide carriage, and described second side is towards described ER fluid, and described second negative electrode is fixed on described guide part, and relative with described second positive electrode, form the second oil pocket;
By controlling the input voltage of described first positive electrode and described first negative electrode, control the electric-field intensity in described first oil pocket, the input voltage of described second positive electrode of described control and described second negative electrode, controls the electric-field intensity in described second oil pocket.
Optionally, described system also comprises: hydraulic pump and fuel tank;
Described hydraulic pump, for by being arranged on the first oil-in on described first positive electrode and the ER fluid in described fuel tank is delivered to described first oil pocket and described second oil pocket by the second oil-in on described second positive electrode;
Described fuel tank, for storing the ER fluid that described guide rail flows out.
Optionally, described system also comprises: first throttle device and second choke;
Described first throttle device is used for carrying out reducing pressure by regulating flow process to the ER fluid being entered described first oil pocket by described first oil-in, and described second choke is used for carrying out reducing pressure by regulating flow process to the ER fluid being entered described second oil pocket by described second oil-in.
Optionally, described system also comprises: overflow valve;
One end of described overflow valve is connected with described fuel tank, and the other end is connected between the flow controller of described hydraulic pump and close described hydraulic pump.
Optionally, described first positive electrode and described second positive electrode are fixed on described slide carriage by the mode of hold-down screw or gluing, and identical with the length of described slide carriage;
Described first negative electrode and described second negative electrode are fixed on described guide rail by hold-down screw or gluing mode, and identical with the length of described guide rail.
Optionally, described first positive electrode and described second positive electrode all cave in along the direction away from described guide rail.
Optionally, described slide carriage is also provided with the first through hole and the second through hole, described first positive electrode is connected with the first power supply by described first through hole, described second positive electrode is connected with second source by described second through hole, and described first negative electrode and the second negative electrode are connected with described second source with described first power supply respectively;
Described first negative electrode and described second negative electrode are platy structure and ground connection.
Optionally, the material of described guide rail and described slide carriage is insulating materials; The material of described first positive electrode, described second positive electrode, described first negative electrode and described second negative electrode is conductive material.
Optionally, described first controller and described second controller symmetrical about the center line of described track cross-section.
As shown from the above technical solution, the hydrostatic guide rail system that the utility model proposes is when load changes, by changing the electric-field intensity in the first oil pocket and the second oil pocket, change the viscosity of ER fluid in the first oil pocket and the second oil pocket, realize the control to the thickness of the ER fluid between guide rail and slide carriage, compared with mechanical adjustment, there is the advantage of fast response time, and significantly can reduce processing vibration amplitude to avoid resonance.
Accompanying drawing explanation
Can understanding feature and advantage of the present utility model clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:
Fig. 1 shows the structural representation of the hydrostatic guide rail system that the utility model one embodiment provides;
Fig. 2 shows the structural representation of the hydrostatic guide rail system that another embodiment of the utility model provides;
Fig. 3 shows the structural representation of the hydrostatic guide rail system that another embodiment of the utility model provides;
Fig. 4 shows the structural representation of the hydrostatic guide rail system that another embodiment of the utility model provides.
Wherein description of reference numerals:
1, overflow valve; 2, fuel tank; 3, hydraulic pump; 4, first throttle device; 5, guide rail; 6, slide carriage; 7, hold-down screw; 8, negative electrode; 9, positive electrode; 10, ER fluid; 11, second choke; 12, workpiece.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
Fig. 1 shows the structural representation of a kind of hydrostatic guide rail system that the utility model one embodiment provides, and as shown in Figure 1, this system comprises guide rail 5, slide carriage 6, at least one first controller and at least one second controller,
Guide rail 5 is in " T " font, comprise support portion and guide part, slide carriage 6 is coated on guide part and also can slides on guide part, and support portion is used for providing support to slide carriage 6, ER fluid 10 is full of, to make neat liquid friction between slide carriage 6 and guide part between slide carriage 6 and guide part; One end of first controller is fixed on guide rail 5, and the other end is fixed on slide carriage 6, and one end of second controller is fixed on guide rail 5, and the other end is fixed on slide carriage 6, and the first controller and second controller are oppositely arranged; First controller comprises the first oil pocket, and second controller comprises the second oil pocket;
When the load on slide carriage 6 changes, said system is by the electric-field intensity in control first oil pocket and the second oil pocket, make the change required for viscosity generation of the ER fluid 10 in the first oil pocket and the second oil pocket, thus change the Static stiffness of the first oil pocket and the second oil pocket.Based under same bearer power, the thickness of Static stiffness size and ER fluid 10 is inversely proportional to, system regulates the thickness of the ER fluid 10 of the first oil pocket and the second oil pocket with this characteristic, until the thickness of ER fluid 10 in the first oil pocket and the second oil pocket remains unchanged.
Because ER fluid 10 is under the control of electric-field intensity, within the response speed of its viscosity B coefficent can reach Millisecond, therefore, this system has fast response time and improves the advantage of crudy; And this system, by increasing electric-field intensity, improves ER fluid 10 viscosity, and then increases the damping of system, particularly when resonance occurs system, processing vibration amplitude can be significantly reduced.
Below system is described in detail:
First controller comprises: the first positive electrode 9 and the first negative electrode 8, first positive electrode 9 are fixed on the first side of slide carriage 6, and the first side is towards ER fluid 10, and the first negative electrode 8 is fixed on guide part, and relative with the first positive electrode 9, forms the first oil pocket; Second controller comprises: the second positive electrode 9 and the second negative electrode 8, second positive electrode 9 are fixed on the second side of slide carriage 6, and the second side is towards ER fluid 10, and the second negative electrode 8 is fixed on guide part, and relative with the second positive electrode 9, forms the second oil pocket;
By controlling the input voltage of the first positive electrode 9 and the first negative electrode 8, controlling the electric-field intensity in the first oil pocket, controlling the input voltage of the second positive electrode 9 and the second negative electrode 8, controlling the electric-field intensity in the second oil pocket.
Wherein, the material of guide rail 5 and slide carriage 6 is insulating materials; The material of the first positive electrode 9, second positive electrode 9, first negative electrode 8 and the second negative electrode 8 is conductive material.
Further, system also comprises: hydraulic pump 3 and fuel tank 2;
Hydraulic pump 3, be arranged between flow controller and fuel tank 2, the ER fluid 10 in fuel tank 2 to be converted into the ER fluid 10 of pressure, and by being arranged on the first oil-in on the first positive electrode 9 and the ER fluid 10 in fuel tank 2 is delivered to the first oil pocket and the second oil pocket by the second oil-in on the second positive electrode 9, to support slide carriage 6; And, guide rail 5 is also provided with oil guide groove, to make the ER fluid 10 that guide rail 5 flows out flow back to fuel tank 2 by oil guide groove, becomes liquid 10 by fuel tank 2 stored current, realize recycling of ER fluid 10.
In order to ensure the validity of hydrostatic slideway, system also comprises: first throttle device 4 and second choke 11; First throttle device 4 is for carrying out reducing pressure by regulating flow process to the ER fluid 10 being entered the first oil pocket by the first oil-in, and second choke 11 is for carrying out reducing pressure by regulating flow process to the ER fluid 10 being entered the second oil pocket by the second oil-in.
Fig. 2 shows the structural representation of the hydrostatic guide rail system that an embodiment provides, referring to Fig. 2, the course of work of flow controller is described in detail, when operating force load f (t) becomes large, slide carriage 6 has the trend moved downward relative to guide rail 5, the thickness h 2 of the ER fluid namely between slide carriage 6 and guide rail 5 upper surface reduces, and the thickness h 1 of the ER fluid between slide carriage 6 and guide rail 5 lower surface becomes large, meanwhile, fluid resistance R is gone out
h2increase, R
h1reduce.If do not have flow controller, ER fluid 10 is inevitable all flow to out the less passage of fluid resistance, and now hydrostatic slideway will lose efficacy.And having flow controller, flow controller can play the effect of reducing pressure by regulating flow.When load becomes large, the first oil pocket pressure P
r2increase, the second oil pocket pressure P
r1reduce, then under the effect of flow controller, through first throttle device 4, i.e. R
g2the pressure drop of ER fluid 10 will reduce, through second choke 11, i.e. R
g1the pressure drop of ER fluid 10 will increase, then flow through first throttle device 4, i.e. R
g2flow will reduce, flow through second choke 11, i.e. R
g1flow will increase, although now slide carriage 6 still has a declining tendency, there will not be the situation that hydrostatic slideway lost efficacy.
In order to carry out overload protection to system, this system also comprises: overflow valve 1, and one end of overflow valve 1 is connected with fuel tank 2, and the other end is connected between the flow controller of hydraulic pump 3 and close hydraulic pump 3, when system worked well, and valve closing; When system load exceedes the limit (system pressure exceedes set pressure) of regulation, valve open, overflow valve 1 pair of system carries out overload protection, is that system pressure no longer increases.
In the present embodiment one preferred embodiment in, the first positive electrode 9, second positive electrode 9 is formed objects with the length of slide carriage 6, and is paved with on the length direction of slide carriage 6 by the first positive electrode 9 and the second positive electrode 9; First negative electrode 8, second negative electrode 8 is formed objects with the length of guide rail 5, to ensure in the whole motion process of slide carriage 6, ER fluid 10 can under the effect of input power, be subject to the control of electric-field intensity, avoid because in the end of guide rail 5 or the non-existent place of other electric-field intensity, system is difficult to regulate the thickness of the ER fluid 10 between guide rail 5 and slide carriage 6, causes the problem reducing crudy.
Will be understood that, groove can be offered respectively on slide carriage 6 and guide rail 5, and by hold-down screw 7 or gluing mode, the first positive electrode 9 and the second positive electrode 9 are fixed in the groove of slide carriage 6, the first negative electrode 8 and the second negative electrode 8 are fixed in the groove of guide rail 5;
In order to fully improve the viscosity of ER fluid 10, first positive electrode 9 and the second positive electrode 9 all cave in along the direction away from guide rail 5, to increase the inner space of the first oil pocket and the second oil pocket, when ER fluid 10 flows through the first oil pocket and the second oil pocket, increase the flow time of ER fluid 10, and then under the effect of input power, the electric-field intensity of the first controller and second controller fully can adjust the viscosity of ER fluid 10;
Further, in the process that ER fluid 10 flows in systemic circulation, electric-field intensity in first oil pocket and the second oil pocket, control by independently input power, namely the first positive electrode 9 is connected with the first power supply by the first through hole, second positive electrode 9 is connected with second source by the second through hole, and the first negative electrode 8 is connected with second source with the first power supply respectively with the second negative electrode 8; And the first negative electrode 8 and the second negative electrode 8 all ground connection, for different oil pocket, regulate electric-field intensity that the thickness of ER fluid can be made to remain unchanged when load changes, improve system Static stiffness.
Fig. 3 and Fig. 4 respectively illustrates the structural representation of the hydrostatic guide rail system that the utility model one embodiment provides; With reference to Fig. 3 and Fig. 4, the first controller and second controller symmetrical about the center line of guide rail 5 cross section; Pair of control device in horizontal direction, in slide carriage 6 sliding process, controls the balance on slide carriage 6 left and right directions, to solve the oil film thickness change of the ER fluid 10 caused because of partial load; Two pairs of controllers on vertical direction, in slide carriage 6 sliding process, control the balance on slide carriage 6 above-below direction, to solve because of load change, and the change of the oil film thickness of ER fluid 10 between the slide carriage 6 caused and guide rail 5.
See figures.1.and.2, below the operation principle of system when load increases be described in detail:
Be applied in ultra-precision machine tool by the hydrostatic guide rail system of design, the ER fluid 10 in fuel tank 2, under hydraulic pump 3 drives, flows through oil-in by oil pipe, enters in the first oil pocket and the second oil pocket, to support slide carriage 6, slide carriage 6 is placed with workpiece 12.Then, ER fluid 10 flows out guide rail 5 by the gap between support portion and slide carriage 6, and flows back to fuel tank 2 by the oil guide groove on guide rail 5.
During processing work 12, when operating force load f (t) becomes large, then slide carriage 6 has the trend moved downward relative to guide rail 5, the thickness h of the ER fluid namely between slide carriage 6 and guide rail 5 upper surface
2reduce, the thickness degree h of the ER fluid between slide carriage 6 and guide rail 5 lower surface
1become large.Meanwhile, the first oil pocket pressure P
r2increase, the second oil pocket pressure P
r1reduce, the fluid that goes out between slide carriage 6 and guide rail 5 upper surface hinders R
h2increase, between slide carriage 6 and guide rail 5 lower surface, go out the R that fluid hinders
h1reduce.Now, under the effect of flow controller reducing pressure by regulating flow, then through first throttle device 4, i.e. R
g2pressure drop will reduce, through second choke 11, i.e. R
g1pressure drop will increase, then flow through first throttle device 4, i.e. R
g2flow will reduce, flow through second choke 11, i.e. R
g1flow will increase, weaken slide carriage 6 downward trend, ensure that hydrostatic slideway can normally work.
Now, increase the control electric field of the first oil pocket by input power or reduce the control electric field of the second oil pocket, ER fluid 10 is under the control of electric field, viscosity increases instantaneously, within response speed reaches Millisecond, damping characteristic increases rapidly, thus within the very short time, improves the Static stiffness of upper oil cavitie or reduce the Static stiffness of lower oil cavitie.Due under same bearer power, the thickness of Static stiffness size and ER fluid is inversely proportional to, and therefore, can make the thickness h of the ER fluid between slide carriage 6 and guide rail 5 upper surface
2increase, the thickness h of the ER fluid between slide carriage 6 and guide rail 5 lower surface
1reduce, until the electric-field intensity regulated makes h
2=h
1, then this state is kept to process.
Describe in detail based on the course of work of said system when load becomes large, when load diminishes, the course of work of this system is that those skilled in the art can understand.Therefore, repeat no more herein.
To sum up, the hydrostatic guide rail system that the utility model provides can realize the control to ER fluid 10 in Millisecond, and become the thickness of liquid 10 with restoring current, response speed quickly; And native system, by the electric-field intensity in change first oil pocket and the second oil pocket, changes the viscosity of ER fluid 10, and then changes the damping of system, particularly when resonance occurs system, significantly reduce processing vibration amplitude; Further, ER fluid 10 circulates in guide rail 5, in each oil pocket, independently input power is had to control ER fluid 10, and by regulating the electric-field intensity of different oil pocket, the thickness of ER fluid being remained unchanged when load changes, improves system Static stiffness.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a hydrostatic guide rail system, it is characterized in that, comprise: guide rail, slide carriage, at least one first controller and at least one second controller, described guide rail is in " T " font, comprise support portion and guide part, described slide carriage is coated on the periphery of described guide part, ER fluid is full of between described slide carriage and described guide part, one end of described first controller is fixed on described guide rail, the other end is fixed on described slide carriage, one end of described second controller is fixed on described guide rail, the other end is fixed on described slide carriage, and described first controller and described second controller are oppositely arranged,
Described first controller comprises the first oil pocket, and described second controller comprises the second oil pocket;
By controlling the electric-field intensity in described first oil pocket and the electric-field intensity in the second oil pocket, keep the thickness of the ER fluid between described slide carriage and described guide part constant.
2. system according to claim 1, it is characterized in that, described first controller comprises: the first positive electrode and the first negative electrode, described first positive electrode is fixed on the first side of described slide carriage, described first side is towards described ER fluid, described first negative electrode is fixed on described guide part, and relative with described first positive electrode, forms the first oil pocket;
Described second controller comprises: the second positive electrode and the second negative electrode, described second positive electrode is fixed on the second side of described slide carriage, and described second side is towards described ER fluid, and described second negative electrode is fixed on described guide part, and relative with described second positive electrode, form the second oil pocket;
By controlling the input voltage of described first positive electrode and described first negative electrode, control the electric-field intensity in described first oil pocket, the input voltage of described second positive electrode of described control and described second negative electrode, controls the electric-field intensity in described second oil pocket.
3. system according to claim 2, is characterized in that, described system also comprises: hydraulic pump and fuel tank;
Described hydraulic pump, for by being arranged on the first oil-in on described first positive electrode and the ER fluid in described fuel tank is delivered to described first oil pocket and described second oil pocket by the second oil-in on described second positive electrode;
Described fuel tank, for storing the ER fluid that described guide rail flows out.
4. system according to claim 3, is characterized in that, described system also comprises: first throttle device and second choke;
Described first throttle device is used for carrying out reducing pressure by regulating flow process to the ER fluid being entered described first oil pocket by described first oil-in, and described second choke is used for carrying out reducing pressure by regulating flow process to the ER fluid being entered described second oil pocket by described second oil-in.
5. system according to claim 3, is characterized in that, described system also comprises: overflow valve;
One end of described overflow valve is connected with described fuel tank, and the other end is connected between the flow controller of described hydraulic pump and close described hydraulic pump.
6. system according to claim 2, is characterized in that, described first positive electrode and described second positive electrode are fixed on described slide carriage by the mode of hold-down screw or gluing, and identical with the length of described slide carriage;
Described first negative electrode and described second negative electrode are fixed on described guide rail by hold-down screw or gluing mode, and identical with the length of described guide rail.
7. system according to claim 2, is characterized in that, described first positive electrode and described second positive electrode all cave in along the direction away from described guide rail.
8. system according to claim 2, it is characterized in that, described slide carriage is also provided with the first through hole and the second through hole, described first positive electrode is connected with the first power supply by described first through hole, described second positive electrode is connected with second source by described second through hole, and described first negative electrode and the second negative electrode are connected with described second source with described first power supply respectively;
Described first negative electrode and described second negative electrode are platy structure and ground connection.
9. system according to claim 2, is characterized in that, the material of described guide rail and described slide carriage is insulating materials; The material of described first positive electrode, described second positive electrode, described first negative electrode and described second negative electrode is conductive material.
10. system according to claim 4, is characterized in that, described first controller and described second controller symmetrical about the center line of described track cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641476.3U CN205008859U (en) | 2015-08-24 | 2015-08-24 | Hydrostatic guideway system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641476.3U CN205008859U (en) | 2015-08-24 | 2015-08-24 | Hydrostatic guideway system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205008859U true CN205008859U (en) | 2016-02-03 |
Family
ID=55207487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520641476.3U Withdrawn - After Issue CN205008859U (en) | 2015-08-24 | 2015-08-24 | Hydrostatic guideway system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205008859U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108499A (en) * | 2015-08-24 | 2015-12-02 | 中南大学 | Electrorheological fluid hydrostatic guideway system |
| CN112096742A (en) * | 2020-10-09 | 2020-12-18 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
| CN113787395A (en) * | 2021-10-19 | 2021-12-14 | 惠州市德瑞科机械有限公司 | Hydrostatic guideway platform, hydrostatic guideway transport mechanism, hydrostatic guideway grinding machine |
-
2015
- 2015-08-24 CN CN201520641476.3U patent/CN205008859U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108499A (en) * | 2015-08-24 | 2015-12-02 | 中南大学 | Electrorheological fluid hydrostatic guideway system |
| CN105108499B (en) * | 2015-08-24 | 2017-06-16 | 中南大学 | A kind of ER fluid hydrostatic guide rail system |
| CN112096742A (en) * | 2020-10-09 | 2020-12-18 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
| CN112096742B (en) * | 2020-10-09 | 2021-11-05 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
| CN113787395A (en) * | 2021-10-19 | 2021-12-14 | 惠州市德瑞科机械有限公司 | Hydrostatic guideway platform, hydrostatic guideway transport mechanism, hydrostatic guideway grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20170616 |