CN117047500A - Hydrostatic turntable and machine tool - Google Patents
Hydrostatic turntable and machine tool Download PDFInfo
- Publication number
- CN117047500A CN117047500A CN202311029211.3A CN202311029211A CN117047500A CN 117047500 A CN117047500 A CN 117047500A CN 202311029211 A CN202311029211 A CN 202311029211A CN 117047500 A CN117047500 A CN 117047500A
- Authority
- CN
- China
- Prior art keywords
- turntable
- gasket
- oil
- hydrostatic
- oil guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000741 silica gel Substances 0.000 claims description 13
- 229910002027 silica gel Inorganic materials 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The application provides a hydrostatic turntable and a machine tool, wherein the hydrostatic turntable is provided with an oil guide mechanism, a driving mechanism, a grating mechanism and a turntable assembly; the horizontal stability of the turntable is better ensured through surface contact between the turntable and the supporting table, and the turntable is in a micro-floating state through an oil film, so that smooth rotation of the turntable is ensured; the gasket washer greatly reduces vibration in the horizontal direction, so that the rotation precision of the turntable is ensured.
Description
Technical Field
The application relates to the technical field of machine tool equipment, in particular to a hydrostatic turntable and a machine tool.
Background
At present, servo turntable technologies are arranged on lathes, grinding machines, four-axis lathes, five-axis lathes and the like with rotating shafts, the servo turntable technology is widely applied to various fields of the ultra-precise numerical control lathe industry, and the precision degree of turntable rotation determines the precision grade of the lathe to a certain extent; the current ultra-precise servo turntable supported by the hydrostatic guideway is generally supported by a rolling bearing, the rotation precision is limited, the rolling body is rubbed with a bearing raceway for a long time, vibration is easy to generate, the rolling body is easy to wear, and the precision is reduced after a period of use.
Disclosure of Invention
In view of the above, an object of the present application is to provide a hydrostatic turntable and a machine tool, which solve the above problems.
The application adopts the following scheme:
the application provides a hydrostatic turntable, which comprises an oil guide mechanism, a driving mechanism, a grating mechanism and a turntable assembly, wherein the oil guide mechanism is arranged on the turntable assembly; the oil guide mechanism comprises a chassis, an oil tank arranged on the chassis, a hydraulic pump arranged in the oil tank, and a plurality of oil guide assemblies connected to the upper end face of the oil tank, wherein the oil guide assemblies are uniformly distributed along the axle center of the oil tank; the turntable assembly comprises a turntable and a supporting table arranged below the turntable; the upper end surface of the supporting table is provided with a plurality of circles of first placing grooves and a plurality of second placing grooves which correspond to and are communicated with the oil guide assembly; a gasket is arranged on the first placing groove; the second placing groove is provided with a gasket; the axle center of the supporting table is provided with a through hole; at least one circle of limiting wall is arranged on the lower end face of the supporting table; the grating mechanism is arranged on the upper end face of the oil tank; a limiting groove matched with the limiting wall is formed in the upper end face of the oil tank; the driving mechanism is arranged at the axle center of the upper end surface of the oil tank and is connected with the turntable through the through hole; the hydraulic pump is used for transmitting oil, and an oil film is formed between the outer surfaces of the gasket and/or between the contact surface of the turntable and the supporting table through the oil guide assembly.
Further, the oil guide assembly comprises a corrugated pipe, a silica gel hose and a semicircular cavity plate; one end of the corrugated pipe is connected to the upper end face of the oil tank, and the other end of the corrugated pipe is connected with the silica gel hose; the top of silica gel hose with semicircle cavity board is connected, just the bottom of semicircle cavity board with the silica gel hose intercommunication.
Further, the gasket comprises a first gasket and a second gasket; the first gasket is connected with the turntable and is arranged in the second placing groove, and a protruding part is arranged at the bottom of the first gasket; the upper end face of the second gasket is provided with a groove matched with the protruding part, and a plurality of oil guide holes are formed in the second gasket along the axis direction of the second gasket; the oil guide hole is communicated with the oil guide assembly.
Further, the driving mechanism comprises a protective shell, a direct current motor stator and a direct current motor rotor; the mounting shaft is rotatably arranged at the axle center of the upper end surface of the oil tank; the DC motor rotor is fixedly arranged on the mounting shaft; the direct-current motor stator is arranged outside the direct-current motor rotor; the protective housing sets up in the DC motor stator outside.
Further, the rotary table comprises a shaft barrel mechanism, wherein the shaft barrel mechanism comprises a lower shaft barrel, one end of which is connected with the upper end of the installation shaft, and an upper shaft barrel, one end of which is connected with the rotary table; a slot round block is fixedly arranged in the upper shaft cylinder; an inserting sheet annular plate which is embedded with the slot circular block is arranged in the lower shaft cylinder; the lower shaft cylinder and the outer side of the upper shaft cylinder are respectively provided with a connecting part which is connected through a connecting inserted link.
A machine tool comprises the hydrostatic turntable.
By adopting the technical scheme, the application can obtain the following technical effects:
the application provides a hydrostatic turntable, which is provided with an oil guide mechanism, a driving mechanism, a grating mechanism and a turntable assembly, wherein when the hydrostatic turntable works, a hydraulic pump continuously conveys oil to a position between the contact surfaces of the turntable and a supporting table through the oil guide mechanism, so that the contact surfaces, a gasket and a gasket generate an oil film; the horizontal stability of the turntable is better ensured through surface contact between the turntable and the supporting table, and the turntable is in a micro-floating state through an oil film, so that smooth rotation of the turntable is ensured; the gasket washer greatly reduces vibration in the horizontal direction, so that the rotation precision of the turntable is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a section of a hydrostatic turntable according to an embodiment of the present application;
FIG. 2 is a schematic view of a hydrostatic turntable partially assembled according to an embodiment of the present application;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a schematic view of a hydrostatic turntable drive mechanism according to an embodiment of the present application;
fig. 5 is an enlarged structural schematic diagram of B in fig. 1;
FIG. 6 is a schematic diagram of a spindle mechanism of a hydrostatic turntable according to an embodiment of the present application;
icon: chassis 1, oil tank 2, hydraulic pump 3, revolving stage 4, brace table 5, packing 6, first packing 7, second packing 8, spacing wall 9, spacing groove 10, bellows 11, silica gel hose 12, semicircle chamber board 13, resin filter screen 14, protective housing 15, direct current motor stator 16, direct current motor rotor 17, upper shaft section of thick bamboo 18, lower shaft section of thick bamboo 19, slot circle piece 20, inserted sheet annular plate 21, connecting portion 22, connection inserted rod 23, grating mechanism 24, shaft section of thick bamboo mechanism 25, installation axle 26, bulge 27, loop bar 28, gag lever post 29.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
Examples
Referring to fig. 1 to 6, the present embodiment provides a hydrostatic turntable, which includes an oil guiding mechanism, a driving mechanism, a grating mechanism 24 and a turntable assembly; the oil guide mechanism comprises a chassis 1, an oil tank 2 arranged on the chassis 1, a hydraulic pump 3 arranged in the oil tank 2, and a plurality of oil guide components connected to the upper end surface of the oil tank 2, wherein the oil guide components are uniformly distributed along the axis of the oil tank 2; the turntable assembly comprises a turntable 4 and a supporting table 5 arranged below the turntable 4; the upper end face of the supporting table 5 is provided with a plurality of circles of first placing grooves and a plurality of second placing grooves which correspond to and are communicated with the oil guide assembly; a gasket 6 is arranged on the first placing groove; the second placing groove is provided with a gasket; the axle center of the supporting table 5 is provided with a through hole; at least one circle of limiting wall 9 is arranged on the lower end face of the supporting table 5; the grating mechanism 24 is arranged on the upper end face of the oil tank 2; the upper end face of the oil tank 2 is provided with a limit groove 10 matched with the limit wall 9; the driving mechanism is arranged at the axle center of the upper end surface of the oil tank 2 and is connected with the turntable 4 through the through hole; the hydraulic pump 3 is used for transmitting oil, and an oil film is formed between the gasket 6 and the outer surface of the gasket and/or between the contact surface of the turntable 4 and the supporting table 5 through the oil guide assembly.
Specifically, in this embodiment, as shown in fig. 2 and 3, the limiting groove 10 is formed by two upward protruding retaining walls disposed on the upper end surface of the oil tank 2; the limiting wall 9 is arranged in the limiting groove 10; the oil guide assembly comprises a corrugated pipe 11, a silica gel hose 12 and a semicircular cavity plate 13; one end of the corrugated pipe 11 is connected to the upper end surface of the oil tank 2, and the other end of the corrugated pipe is connected to the silica gel hose 12; the top end of the silica gel hose 12 is connected with the semicircular cavity plate 13, and the bottom end of the semicircular cavity plate 13 is communicated with the silica gel hose 12; the upper end of the semicircular cavity plate 13 is provided with a resin filter screen 14, and the resin filter screen 14 is connected with the gasket; the bellows 11 has a certain flexible stretching capability, and is durable and not easy to damage. As shown in fig. 5, the gasket comprises a first gasket 7 and a second gasket 8; the first gasket 7 is connected with the turntable 4 and is placed in the second placing groove, and the bottom of the first gasket is provided with a protruding part 27; the upper end surface of the second gasket 8 is provided with a groove matched with the protruding part 27, and a plurality of oil guide holes are arranged on the second gasket 8 along the axial direction of the second gasket; the oil guide hole is communicated with the oil guide assembly. The resin filter screen 14 can filter impurity particles in the oil liquid and can simultaneously perform slow release function on the oil pressure, so that the oil liquid gradually permeates through the oil guide holes to enable the surface of the first gasket 7 to generate an oil film, and further the surface of the gasket 6 also generates the oil film through a gap between the turntable 4 and the supporting piece; the gasket 6 and the gasket are made of wear-resistant rubber or silica gel, and have a certain buffering effect so as to ensure the stability of the turntable 4.
As shown in fig. 6, the driving mechanism includes a protective housing 15, a dc motor stator 16, a dc motor rotor 17, and a shaft cylinder mechanism 25; a mounting shaft 26 is rotatably arranged at the axle center of the upper end surface of the oil tank 2; the DC motor rotor 17 is fixedly arranged on the mounting shaft 26; the dc motor stator 16 is disposed outside the dc motor rotor 17; the protective case 15 is provided outside the dc motor stator 16. The shaft cylinder mechanism 25 comprises a lower shaft cylinder 19 with one end connected to the upper end of the mounting shaft 26 and an upper shaft cylinder 18 with one end connected to the turntable 4; a slot round block 20 is fixedly arranged in the upper shaft barrel 18; an inserting sheet ring plate 21 which is embedded with the slot round block 20 is arranged in the lower shaft barrel 19; a loop bar 28 is arranged at the bottom of the inserting sheet annular plate 21, and the loop bar 28 is connected into the lower shaft barrel 19 through a limiting bar 29; the outer sides of the lower shaft tube 19 and the upper shaft tube 18 are respectively provided with a connecting part 22 which is connected through a connecting inserted rod 23. The slot circular block 20 and the inserting sheet annular plate 21 are vertically inserted and combined, so that the turntable 4 and the DC motor rotor 17 are ensured to synchronously rotate when an oil film is slightly floated between the turntable 4 and the supporting table 5.
The grating mechanism 24 is a prior art, and is not specifically described herein, and the feedback of the dc motor rotor 17 and the grating ring mechanism realizes full closed-loop control on the servo turntable 4, so as to ensure the control accuracy of the rotation angle.
The application provides a hydrostatic turntable 4, which is provided with an oil guide mechanism, a driving mechanism, a grating mechanism 24 and a turntable 4 assembly, wherein when the hydrostatic turntable 4 works, a hydraulic pump 3 is a reciprocating hydraulic pump and continuously conveys oil to a position between contact surfaces of the turntable 4 and a supporting table 5 through the oil guide mechanism, so that oil films are generated on the contact surfaces, a gasket 6 and a gasket; the horizontal stability of the turntable 4 is better ensured through surface contact between the turntable 4 and the supporting table 5, and the turntable 4 is in a micro-floating state by an oil film, so that the smooth rotation of the turntable 4 is ensured; the gasket 6 greatly reduces vibration in the horizontal direction, thereby ensuring the rotation accuracy of the turntable 4.
The application also provides a machine tool, which comprises the hydrostatic turntable 4, wherein the chassis 1 and the supporting table 5 are fixed on the machine table; the turntable 4 is used for connecting other processing equipment or workpiece positioning equipment and the like.
The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Claims (6)
1. The hydrostatic turntable is characterized by comprising an oil guide mechanism, a driving mechanism, a grating mechanism and a turntable assembly; the oil guide mechanism comprises a chassis, an oil tank arranged on the chassis, a hydraulic pump arranged in the oil tank, and a plurality of oil guide assemblies connected to the upper end face of the oil tank, wherein the oil guide assemblies are uniformly distributed along the axle center of the oil tank; the turntable assembly comprises a turntable and a supporting table arranged below the turntable; the upper end surface of the supporting table is provided with a plurality of circles of first placing grooves and a plurality of second placing grooves which correspond to and are communicated with the oil guide assembly; a gasket is arranged on the first placing groove; the second placing groove is provided with a gasket; the axle center of the supporting table is provided with a through hole; at least one circle of limiting wall is arranged on the lower end face of the supporting table; the grating mechanism is arranged on the upper end face of the oil tank; a limiting groove matched with the limiting wall is formed in the upper end face of the oil tank; the driving mechanism is arranged at the axle center of the upper end surface of the oil tank and is connected with the turntable through the through hole; the hydraulic pump is used for transmitting oil, and an oil film is formed between the outer surfaces of the gasket and/or between the contact surface of the turntable and the supporting table through the oil guide assembly.
2. The hydrostatic turntable of claim 1, wherein the oil guide assembly comprises a bellows, a silicone hose, and a semicircular cavity plate; one end of the corrugated pipe is connected to the upper end face of the oil tank, and the other end of the corrugated pipe is connected with the silica gel hose; the top of silica gel hose with semicircle cavity board is connected, just the bottom of semicircle cavity board with the silica gel hose intercommunication.
3. The hydrostatic turntable of claim 1, wherein the shims include a first shim and a second shim; the first gasket is connected with the turntable and is arranged in the second placing groove, and a protruding part is arranged at the bottom of the first gasket; the upper end face of the second gasket is provided with a groove matched with the protruding part, and a plurality of oil guide holes are formed in the second gasket along the axis direction of the second gasket; the oil guide hole is communicated with the oil guide assembly.
4. The hydrostatic turntable of claim 1, wherein the drive mechanism comprises a protective housing, a dc motor stator, a dc motor rotor; the mounting shaft is rotatably arranged at the axle center of the upper end surface of the oil tank; the DC motor rotor is fixedly arranged on the mounting shaft; the direct-current motor stator is arranged outside the direct-current motor rotor; the protective housing sets up in the DC motor stator outside.
5. The hydrostatic turntable of claim 4, further comprising a spindle barrel mechanism including a lower spindle barrel having one end connected to an upper end of said mounting shaft, an upper spindle barrel having one end connected to said turntable; a slot round block is fixedly arranged in the upper shaft cylinder; an inserting sheet annular plate which is embedded with the slot circular block is arranged in the lower shaft cylinder; the lower shaft cylinder and the outer side of the upper shaft cylinder are respectively provided with a connecting part which is connected through a connecting inserted link.
6. A machine tool comprising a hydrostatic turret according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311029211.3A CN117047500A (en) | 2023-08-16 | 2023-08-16 | Hydrostatic turntable and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311029211.3A CN117047500A (en) | 2023-08-16 | 2023-08-16 | Hydrostatic turntable and machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117047500A true CN117047500A (en) | 2023-11-14 |
Family
ID=88654798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311029211.3A Pending CN117047500A (en) | 2023-08-16 | 2023-08-16 | Hydrostatic turntable and machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117047500A (en) |
-
2023
- 2023-08-16 CN CN202311029211.3A patent/CN117047500A/en active Pending
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