CN216575550U - Hydraulic control mechanical feedback type one-way film throttling high-rigidity static pressure main shaft - Google Patents
Hydraulic control mechanical feedback type one-way film throttling high-rigidity static pressure main shaft Download PDFInfo
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- CN216575550U CN216575550U CN202123423380.4U CN202123423380U CN216575550U CN 216575550 U CN216575550 U CN 216575550U CN 202123423380 U CN202123423380 U CN 202123423380U CN 216575550 U CN216575550 U CN 216575550U
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Abstract
The utility model provides a high rigidity hydrostatic spindle of one-way film of hydraulic control machinery feedback formula throttle, including rotating main shaft, first cylinder body and second cylinder body, rotating main shaft's middle part is formed with the shaft shoulder, and first cylinder body and second cylinder body suit are respectively in the both sides that lie in the shaft shoulder on rotating main shaft, establish respectively between first cylinder body and rotating main shaft and between second cylinder body and the rotating main shaft and be used for realizing the hydrostatic bearing that the static pressure supported sealedly, still be fixed with respectively on first cylinder body and the second cylinder body and be used for providing the one-way film feedback flow controller of hydrostatic fluid for hydrostatic bearing. Compared with the prior art, the utility model discloses a static pressure support technology can make rotatory main shaft mechanical friction not during rotatory, and adopts film feedback flow controller, can provide variable rigidity, and along with the increase of load, rigidity increases thereupon, further strengthens the pressure differential of static pressure oil pocket, and the load of balanced rotatory main shaft makes rotatory main shaft resume primary position, improves the gyration precision of static pressure main shaft.
Description
Technical Field
The utility model relates to a static pressure main shaft technical field, in particular to hydraulic control machinery feedback type one-way film throttle high rigidity static pressure main shaft.
Background
The machine tool spindle with high rotating speed and high rigidity is the main development direction of the machine tool industry at present, but the traditional machine tool spindle is limited by materials, design theory and process treatment, only the machine tool spindle mainly adopting a ceramic bearing can be adopted, mechanical friction can be generated between the machine tool spindle and the bearing, the machine tool spindle is limited by the service life and the clearance of the bearing, and the rotating speed and the rotating precision of the machine tool spindle are limited, so that the traditional machine tool spindle cannot achieve both high rotating speed and high rigidity.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high rigidity static pressure main shaft of one-way film throttle of hydraulic control machinery feedback formula to solve traditional lathe main shaft problem that can not hold concurrently on high rotational speed and high rigidity.
In order to achieve the above purpose, the utility model adopts the following specific technical scheme:
the utility model provides a hydraulically controlled machine reaction type one-way film throttle high rigidity static pressure main shaft, include: the static pressure supporting and sealing device comprises a rotating main shaft, a first cylinder body and a second cylinder body, wherein a shaft shoulder is formed in the middle of the rotating main shaft, the first cylinder body and the second cylinder body are respectively sleeved on the two sides of the shaft shoulder on the rotating main shaft, static pressure bearings used for realizing static pressure supporting and sealing are respectively arranged between the first cylinder body and the rotating main shaft and between the second cylinder body and the rotating main shaft, and one-way film feedback throttlers used for providing static pressure oil for the static pressure bearings are respectively fixed on the first cylinder body and the second cylinder body.
Preferably, the hydrostatic bearing comprises a main shaft hydrostatic oil cavity and a shaft shoulder hydrostatic oil cavity which are arranged on the first cylinder body and the second cylinder body and are radially and symmetrically distributed, and hydrostatic oil is respectively filled in the main shaft hydrostatic oil cavity and the shaft shoulder hydrostatic oil cavity, so that hydrostatic oil films are respectively formed between the rotating main shaft and the first cylinder body and between the rotating main shaft and the second cylinder body.
Preferably, the spindle static pressure oil chambers are respectively arranged on the spindle matching surfaces of the first cylinder body and the second cylinder body with the rotary spindle, and the shaft shoulder static pressure oil chambers are respectively arranged on the shaft shoulder matching surfaces of the first cylinder body and the second cylinder body with the rotary spindle.
Preferably, the one-way film feedback restrictor comprises a restrictor shell, a restrictor disc and an elastic diaphragm, wherein a sunken platform is formed on the top surface of the restrictor disc, an oil groove is formed in the sunken platform, an external oil inlet hole, a static pressure oil cavity oil inlet hole and a slit restrictor ring are respectively formed in the restrictor disc, the elastic diaphragm is mounted at the sunken platform of the restrictor disc and mounted on the restrictor shell together with the restrictor disc, the oil groove and the elastic diaphragm enclose an elastic diaphragm lower cavity, the restrictor shell and the elastic diaphragm enclose an elastic diaphragm upper cavity, the elastic diaphragm upper cavity is communicated with the external oil inlet hole, and the elastic diaphragm lower cavity is respectively communicated with the static pressure oil cavity oil inlet hole, the slit restrictor ring, the main shaft static pressure oil cavity and the shaft shoulder static pressure oil cavity.
Preferably, an oil inlet is formed in the first cylinder body, an oil drainage port is formed in the second cylinder body, an oil inlet loop and an oil drainage loop are respectively formed in the first cylinder body and the second cylinder body, the oil inlet is communicated with an oil supply port of the one-way film feedback restrictor, an oil outlet of the one-way film feedback restrictor is respectively communicated with the spindle static pressure oil cavity and the shaft shoulder static pressure oil cavity through the oil inlet loop, and the spindle static pressure oil cavity and the shaft shoulder static pressure oil cavity are also respectively communicated with the oil drainage port through the oil drainage loop.
Preferably, a cooling water tank and a circulating water path are further respectively processed on the first cylinder body and the second cylinder body, a water tank sealing end cover is installed in the cooling water tank, a cooling water inlet is processed on the first cylinder body, a cooling water return port is processed on the second cylinder body, and the cooling water inlet is communicated with the cooling water return port through the circulating water path.
Preferably, a sealing ring groove is processed on the cooling water tank, and a sealing ring is installed in the sealing ring groove to realize sealing between the cooling water tank and the water tank sealing end cover.
Preferably, the rotating main shaft is of a hollow structure.
Preferably, positioning spigots are machined at both ends of the rotating main shaft.
Compared with the existing machine tool spindle, the utility model discloses a static pressure support technique, establish hydrostatic bearing between rotating main shaft and cylinder body, make and form the static pressure oil film between rotating main shaft and the cylinder body, guarantee no mechanical friction between rotating main shaft and the cylinder body, and adopt one-way film feedback flow controller to provide static pressure fluid for hydrostatic bearing's static pressure chamber, one-way film feedback flow controller is variable hydraulic resistance flow controller, the elastic diaphragm of one-way film feedback flow controller is along with load pressure's increase and warp, thereby change the hydraulic resistance of one-way film feedback flow controller, improve the rigidity of static pressure oil film, and make the eccentricity at rotating main shaft center keep unchangeable, thereby obtain higher gyration precision.
Drawings
Fig. 1 is a schematic view of the overall structure of a hydraulically-controlled mechanical feedback type one-way thin-film throttling high-rigidity hydrostatic spindle according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of a hydraulically controlled mechanical feedback type one-way membrane throttling high-rigidity hydrostatic spindle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an unidirectional thin film feedback restrictor according to an embodiment of the present invention.
Wherein the reference numerals include: the rotary main shaft type oil cylinder comprises a rotary main shaft 1, a first cylinder body 2, a second cylinder body 3, a one-way film feedback restrictor 4, a water tank sealing end cover 5, a main shaft static pressure oil chamber 6, a shaft shoulder static pressure oil chamber 7, an oil inlet 8, an oil drain port 9, a sealing ring 10, a restrictor shell 11, a restrictor disc 12, an elastic diaphragm 13, an external oil inlet hole 14, a static pressure oil chamber oil inlet hole 15, a slit restrictor ring 16, an elastic diaphragm lower cavity 17, an elastic diaphragm upper cavity 18 and an O-shaped ring 19.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute limitations on the invention.
Fig. 1 and fig. 2 show the overall structure and the sectional structure of the hydraulic control mechanical feedback type one-way membrane throttling high-rigidity hydrostatic spindle according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a hydraulically controlled mechanical feedback type one-way film throttle high rigidity static pressure main shaft, include: the device comprises a rotary main shaft 1, a first cylinder body 2, a second cylinder body 3, a one-way film feedback restrictor 4 and a water tank sealing end cover 5; the middle part of the rotating main shaft 1 is provided with a shaft shoulder, the first cylinder body 2 and the second cylinder body 3 are respectively sleeved on the rotating main shaft 1 and positioned on two sides of the shaft shoulder, hydrostatic bearings used for realizing hydrostatic support sealing are respectively established between the first cylinder body 2 and the rotating main shaft 1 and between the second cylinder body 3 and the rotating main shaft 1, and the one-way film feedback throttler 4 is fixed on the first cylinder body 2 and the second cylinder body 3 and used for providing hydrostatic oil for the hydrostatic bearings. Seal grooves are respectively formed in the first cylinder body 2 and the second cylinder body 3, and oil sealing is performed between the first cylinder body 2 and the second cylinder body 3 through an O-shaped ring 19.
The utility model provides a high rigidity hydrostatic pressure main shaft adopts the hydrostatic pressure support technology, makes between rotating main shaft 1 and the first cylinder body 2, establishes hydrostatic bearing between rotating main shaft 1 and the second cylinder body 3, forms the static pressure oil film, guarantees between rotating main shaft 1 and the first cylinder body 2, does not have any mechanical friction between rotating main shaft 1 and the second cylinder body 3, realizes rotating main shaft 1's high rotational speed and long-life. The one-way film feedback throttler 4 is adopted to provide static pressure supporting force for an oil cavity of the hydrostatic bearing, the oil film rigidity of the hydrostatic bearing is improved in a one-way film feedback throttling mode, the oil film rigidity of the hydrostatic bearing is enabled to be reduced along with the increase of the lateral load on the rotating main shaft 1 under specific oil pressure, the balanced load of the oil cavity pressure is further increased, the rotating main shaft 1 is enabled to be restored to the original position, the oil film rigidity of the rotating main shaft 1 is improved, the eccentricity of the center of the rotating main shaft 1 is enabled to be kept unchanged, and therefore higher rotation precision is obtained.
Because the hydrostatic bearing is used for rotating guide and sealing of the rotating main shaft 1, in the range allowed by the oil film rigidity of the hydrostatic bearing, the load is increased, the rotating speed of the rotating main shaft 1 is not influenced, and the friction torque borne by the rotating main shaft 1 depends on the viscosity of oil.
The rotary main shaft 1 is of a hollow structure, the front end and the rear end of the rotary main shaft are respectively provided with a positioning spigot, the movement quality is reduced while the strength is ensured, the outer surface of the rotary main shaft 1 is subjected to thermal spraying process and polishing treatment, and the rotary main shaft has the advantages of high processing precision and long service life.
At least four main shaft static pressure oil chambers 6 which are radially and symmetrically distributed are formed in the main shaft matching surface of the first cylinder body 2 and the rotating main shaft 1, static pressure oil is filled in each main shaft static pressure oil chamber 6, a static pressure oil film is formed between the first cylinder body 2 and the rotating main shaft 1, and therefore a static pressure bearing is established in the axial direction of the rotating main shaft 1.
At least two shaft shoulder static pressure oil chambers 7 which are radially and symmetrically distributed are formed in the shaft shoulder matching surface of the first cylinder body 2 and the rotating main shaft 1, static pressure oil is filled in each shaft shoulder static pressure oil chamber 7, a static pressure oil film is formed between the first cylinder body 2 and the shaft shoulder, and therefore a static pressure bearing is built in the radial direction of the rotating main shaft 1.
An oil inlet 8 is formed in the outer portion of the first cylinder body 2, an oil inlet loop and an oil drainage loop are respectively formed in the first cylinder body 2, the oil inlet 8 is communicated with an oil supply port of a one-way film feedback throttler 4 fixed on the first cylinder body 2, an oil outlet of the one-way film feedback throttler 4 is respectively communicated with a spindle static pressure oil cavity 6 and a shaft shoulder static pressure oil cavity 7 of the first cylinder body 2 through the oil inlet loop, and the oil drainage loop in the first cylinder body 2 is also communicated with the spindle static pressure oil cavity 6 and the shaft shoulder static pressure oil cavity 7 of the first cylinder body 2.
The positions of the main shaft static pressure oil cavity and the shaft shoulder static pressure oil cavity formed in the second cylinder body 3 are the same as the positions of the main shaft static pressure oil cavity and the shaft shoulder static pressure oil cavity formed in the first cylinder body 2, and therefore, the description is omitted.
An oil drainage port 9 is formed in the outer portion of the second cylinder body 3, an oil inlet loop and an oil drainage loop are respectively formed in the second cylinder body 3, an oil supply port of the one-way film feedback restrictor 4 fixed on the second cylinder body 3 is communicated with an oil inlet 8 of the first cylinder body 2, an oil outlet of the one-way film feedback restrictor 4 is respectively communicated with a spindle static pressure oil cavity 6 and a shaft shoulder static pressure oil cavity 7 of the second cylinder body 3 through the oil inlet loop in the second cylinder body 3, and the oil drainage port 9 in the second cylinder body 3 is also communicated with the spindle static pressure oil cavity 6 and the shaft shoulder static pressure oil cavity 7 of the second cylinder body 3.
High-pressure oil flows in from an oil inlet 8, respectively enters the one-way film feedback throttlers 4 fixed on the first cylinder body 2 and the second cylinder body 3, is reduced in pressure by the two one-way film feedback throttlers 4 and then becomes static pressure oil, and respectively flows into each main shaft static pressure oil cavity 6 and the shaft shoulder static pressure oil cavity 7 of the first cylinder body 2 through an oil inlet loop in the first cylinder body 2 and flows into each main shaft static pressure oil cavity and the shaft shoulder static pressure oil cavity of the second cylinder body 3 through an oil inlet loop in the second cylinder body 32 to respectively provide static pressure supporting force so as to form a static pressure oil film. Static pressure oil in the main shaft static pressure oil chamber 6 and the shaft shoulder static pressure oil chamber 7 of the first cylinder body 2 reaches the oil drainage port 9 through an oil drainage loop in the first cylinder body 2 and is discharged through the oil drainage port 9, and static pressure oil in the main shaft static pressure oil chamber and the shaft shoulder static pressure oil chamber of the second cylinder body 3 reaches the oil drainage port 9 through an oil drainage loop in the second cylinder body 3 and is discharged through the oil drainage port 9.
Because the rising of fluid temperature can influence the viscosity of hydraulic pressure fluid, and then influence the liquid resistance of one-way film feedback flow controller 4, consequently processing has cooling water inlet and cooling trough on first cylinder body 2, processing has cooling water return water mouth and cooling trough on second cylinder body 3, still processed respectively at the inside of first cylinder body 2 and second cylinder body 3 and have circulated the water route, circulated the water route respectively with the cooling water inlet, the cooling water return water mouth is linked together, basin seal end cover 5 is installed on cooling trough, be used for realizing the sealed to cooling trough. A sealing ring groove is processed on the cooling water tank, and a sealing ring 10 is installed in the sealing ring groove to realize the sealing between the cooling water tank and the water tank sealing end cover 5.
The cooling water enters the first cylinder body 2 from the water inlet, flows through the circulating water paths of the first cylinder body 2 and the second cylinder body 3, and then flows out from the cooling water return port. The cooling water is used for cooling and circulating the oil temperature of the whole static pressure main shaft, so that the oil temperature is kept at a constant temperature, and the rotation precision of the static pressure main shaft is not influenced by the temperature change of the oil liquid.
Fig. 3 shows the structure of the unidirectional thin film feedback restrictor according to an embodiment of the present invention.
As shown in fig. 3, the one-way film feedback restrictor comprises a restrictor housing 11, a restrictor disc 12 and an elastic membrane 13, wherein the elastic membrane 13 is a one-way film and can only deform along one direction, a sinking platform is formed on the top surface of the restrictor disc 12, an oil groove is formed on the sinking platform, an external oil inlet 14, a static pressure oil chamber oil inlet 15 and a slit restrictor ring 16 are respectively formed in the restrictor disc 13, the elastic membrane 13 is mounted at the sinking platform of the restrictor disc 12 and mounted on the restrictor housing 11 together with the restrictor disc 12, the oil groove and the elastic membrane 13 enclose an elastic membrane lower cavity 17, the restrictor housing 11 and the elastic membrane 13 enclose an elastic membrane 18, an elastic membrane upper cavity 18 is communicated with the external upper cavity oil inlet 14, the elastic membrane lower cavity 17 is communicated with the static pressure oil chamber oil inlet 15, the static pressure oil chamber oil inlet 15 is also respectively communicated with the slit restrictor ring 16 and the spindle static pressure oil chamber 6, The shaft shoulder static pressure oil chambers 7 are communicated.
The working process of the utility model is as follows:
high-pressure oil with constant pressure is input into the oil inlet 8, the high-pressure oil respectively enters the one-way film feedback throttler 4 fixed on the first cylinder body 2 and the second cylinder body 3, and static-pressure oil is output into each main shaft static-pressure oil cavity 6 and each shaft shoulder static-pressure oil cavity 7 through each one-way film feedback throttler 4, a static-pressure bearing is established, and static-pressure supporting force is provided, so that the rotating main shaft 1 is suspended above the static-pressure oil film under the action of the static-pressure supporting force. Redundant oil in the main shaft static pressure oil chamber 6 and the shaft shoulder static pressure oil chamber 7 reaches an oil drainage port 9 through oil drainage loops of the first cylinder body 2 and the second cylinder body 3 and is discharged through the oil drainage port 9.
When an external load is applied to the rotating main shaft 1 in the radial direction or the axial direction, the one-way film feedback restrictor 4 plays a role in adjusting the rigidity of an oil film, high-pressure oil with constant pressure enters the elastic diaphragm upper cavity 18 through the external oil inlet hole 14 of the one-way film feedback restrictor 4, the high-pressure oil in the elastic diaphragm upper cavity 18 extrudes the elastic diaphragm 13 to deform the elastic diaphragm 13, a certain gap h0 is formed between the elastic diaphragm 13 and a sinking platform of the throttling disc 12 to form a certain liquid resistance, the high-pressure oil enters the elastic diaphragm lower cavity 17 after being reduced in pressure, and the high-pressure oil enters the main shaft static pressure oil cavity 6 and the shaft shoulder static pressure oil cavity 7 through the slit throttling ring 16 and the static pressure oil cavity oil inlet hole 15 to form static pressure supporting force and establish certain oil film rigidity.
When the external load of the rotating main shaft 1 is increased, along with the increase of the oil pressure of the loaded static pressure oil cavity, the lower cavity 17 of the elastic diaphragm is extruded by the oil pressure, so that the deformation of the elastic diaphragm 13 is reduced, the gap h0 is increased, the hydraulic resistance of high-pressure oil flowing through the gap h0 is reduced, the flow is increased, the pressure of the oil inlet hole 15 of the static pressure oil cavity is increased, the pressure of the static pressure oil cavity is increased, the rigidity of an oil film is increased, the external load is balanced, the rotating main shaft 1 is restored to the original position, the radial or axial displacement of the rotating main shaft 1 is kept unchanged, and the rotation precision of the static pressure main shaft is improved, namely the high-speed rotation of the rotating main shaft 1 is realized, and the static pressure main shaft can obtain higher rotation precision.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a high rigidity hydrostatic spindle of one-way film throttle of hydraulic control machinery feedback formula which characterized in that includes: the static pressure supporting and sealing device comprises a rotating main shaft, a first cylinder body and a second cylinder body, wherein a shaft shoulder is formed in the middle of the rotating main shaft, the first cylinder body and the second cylinder body are respectively sleeved on the rotating main shaft and located on two sides of the shaft shoulder, static pressure bearings used for achieving static pressure supporting and sealing are respectively established between the first cylinder body and the rotating main shaft and between the second cylinder body and the rotating main shaft, and one-way film feedback throttlers used for providing static pressure oil for the static pressure bearings are respectively fixed on the first cylinder body and the second cylinder body.
2. The hydraulically controlled mechanical feedback type one-way thin-film throttling high-rigidity hydrostatic spindle as claimed in claim 1, wherein the hydrostatic bearing comprises a spindle hydrostatic oil chamber and a shoulder hydrostatic oil chamber which are radially and symmetrically arranged on the first cylinder body and the second cylinder body, and hydrostatic oil is respectively filled in the spindle hydrostatic oil chamber and the shoulder hydrostatic oil chamber, so that hydrostatic oil films are respectively formed between the rotary spindle and the first cylinder body and between the rotary spindle and the second cylinder body.
3. The hydraulically controlled mechanical feedback type one-way thin film throttling high-rigidity hydrostatic spindle of claim 2, wherein the spindle hydrostatic oil chambers are respectively formed on the spindle matching surfaces of the first cylinder block and the second cylinder block with the rotary spindle, and the shoulder hydrostatic oil chambers are respectively formed on the shoulder matching surfaces of the first cylinder block and the second cylinder block with the rotary spindle.
4. The hydraulically controlled mechanical feedback type one-way thin film throttling high-rigidity hydrostatic spindle according to claim 2 or 3, wherein the one-way thin film feedback throttling device comprises a throttling device shell, a throttling disc and an elastic diaphragm, a sinking platform is formed on the top surface of the throttling disc, an oil groove is formed in the sinking platform, an external oil inlet, a hydrostatic oil cavity oil inlet and a slit throttling ring are respectively formed in the throttling disc, the elastic diaphragm is mounted at the sinking platform of the throttling disc and mounted on the throttling device shell together with the throttling disc, the oil groove and the elastic diaphragm enclose an elastic diaphragm lower cavity, the throttling device shell and the elastic diaphragm enclose an elastic diaphragm, the elastic diaphragm upper cavity is communicated with the external oil inlet, the elastic diaphragm lower cavity is respectively communicated with the hydrostatic oil inlet, the slit throttling ring, The spindle static pressure oil chamber is communicated with the shaft shoulder static pressure oil chamber.
5. The hydraulically controlled mechanical feedback type one-way film throttling high-rigidity hydrostatic spindle of claim 4, wherein the first cylinder body is provided with an oil inlet, the second cylinder body is provided with an oil drainage port, the first cylinder body and the second cylinder body are respectively provided with an oil inlet loop and an oil drainage loop, the oil inlet is communicated with an oil supply port of the one-way film feedback throttle, an oil outlet of the one-way film feedback throttle is respectively communicated with the spindle hydrostatic oil cavity and the shoulder hydrostatic oil cavity through the oil inlet loop, and the spindle hydrostatic oil cavity and the shoulder hydrostatic oil cavity are respectively communicated with the oil drainage port through the oil drainage loop.
6. The hydraulically controlled mechanical feedback type one-way membrane throttling high-rigidity static pressure spindle according to claim 5, wherein a cooling water tank and a circulating water path are respectively formed on the first cylinder and the second cylinder, a water tank sealing end cover is installed in the cooling water tank, a cooling water inlet is formed on the first cylinder, a cooling water return port is formed on the second cylinder, and the cooling water inlet is communicated with the cooling water return port through the circulating water path.
7. The hydraulically controlled mechanical feedback type unidirectional membrane throttling high-rigidity static pressure spindle as claimed in claim 6, wherein a sealing ring groove is processed on the cooling water tank, and a sealing ring is installed in the sealing ring groove to realize sealing between the cooling water tank and the water tank sealing end cover.
8. The hydraulically controlled mechanical feedback type unidirectional membrane throttling high-rigidity hydrostatic spindle of claim 1, wherein the rotating spindle is of a hollow structure.
9. The hydraulically controlled mechanical feedback type unidirectional membrane throttling high-rigidity hydrostatic spindle of claim 8, wherein positioning spigots are machined at two ends of the rotary spindle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123423380.4U CN216575550U (en) | 2021-12-31 | 2021-12-31 | Hydraulic control mechanical feedback type one-way film throttling high-rigidity static pressure main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123423380.4U CN216575550U (en) | 2021-12-31 | 2021-12-31 | Hydraulic control mechanical feedback type one-way film throttling high-rigidity static pressure main shaft |
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| Publication Number | Publication Date |
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| CN216575550U true CN216575550U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123423380.4U Active CN216575550U (en) | 2021-12-31 | 2021-12-31 | Hydraulic control mechanical feedback type one-way film throttling high-rigidity static pressure main shaft |
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| CN (1) | CN216575550U (en) |
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2021
- 2021-12-31 CN CN202123423380.4U patent/CN216575550U/en active Active
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