CN116787174A - Ultra-precise hydrostatic bearing turntable - Google Patents
Ultra-precise hydrostatic bearing turntable Download PDFInfo
- Publication number
- CN116787174A CN116787174A CN202310704982.1A CN202310704982A CN116787174A CN 116787174 A CN116787174 A CN 116787174A CN 202310704982 A CN202310704982 A CN 202310704982A CN 116787174 A CN116787174 A CN 116787174A
- Authority
- CN
- China
- Prior art keywords
- copper
- turntable
- ultra
- precise
- hydrostatic bearing
- 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 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 claims abstract description 38
- 239000010949 copper Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 abstract description 23
- 238000003754 machining Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses an ultraprecise hydrostatic bearing turntable, and relates to a turntable structure for machine tool machining. The ultra-precise hydrostatic bearing turntable is high in rotation precision, high in rigidity, simple in structure, stable in operation and large in applicable rotating speed range. The invention relates to an ultra-precise hydrostatic bearing turntable, which comprises a turntable substrate, wherein copper sleeves are arranged on the inner circle of the turntable substrate, copper rings are respectively arranged on the upper surface and the lower surface of the turntable substrate, the copper sleeves and the copper rings are fixedly connected with the turntable substrate, the copper sleeves and the copper rings form a copper sleeve assembly, a shaft core is arranged on the inner side of the substrate and fixedly connected with an end cover, the shaft core is in clearance fit with the copper sleeves, and the surfaces of the end cover, adjacent to the copper rings, are filled with ultra-precise water.
Description
Technical Field
The invention relates to the technical field of processing machine tools, in particular to an ultra-precise hydrostatic bearing turntable.
Background
In application scenes such as scientific research, precision measurement of high-end manufacturing industry and the like, a plurality of high-precision rotary tables are often used, and the processing control of workpieces is realized by rotating and matching with corresponding processing equipment. The bearing turntable can be used for realizing circular feeding motion during machining, and the workpiece is used in combination with an automatic tool changing device, so that a plurality of procedures of a plurality of surfaces can be finished through one-time installation of the workpiece, the working efficiency is greatly improved, and the bearing turntable is an essential basic functional component of a plurality of precise numerical control machine tools.
Bearing turntables are commonly applied to the industries of precise and ultra-precise numerical control machine tools, such as lathes with rotating shafts, grinding machines, four-axis lathes and five-axis lathes, and the precision degree of the bearing turntables determines the precision grade of the lathes. For a precise ultra-precise numerical control machine tool with a rotating shaft, the configured bearing turntable is required to have high rotating precision, high rigidity, large bearing capacity, stable operation, large applicable rotating speed range and long service life. The bearing turntable is an important component of the ultra-precise machining technology, and can improve the overall precision of a precise ultra-precise numerical control machine tool.
The existing bearing turntable commonly adopts a rolling bearing support, the rotation precision is limited, when the bearing turntable runs, the rolling body and a bearing raceway are rubbed, vibration is easy to generate, the bearing turntable is easy to wear, and the precision is reduced after a period of use. The existing hydrostatic turntable has the defects that the rotation precision is high, structural parts are complex to process, the precision of the parts is not easy to guarantee, most of the structures are not provided with brake devices, and the positioning precision is not guaranteed to be stable after angle indexing.
Disclosure of Invention
The invention aims to solve the technical problem of providing the ultra-precise hydrostatic bearing turntable which has high rotation precision, high rigidity, stable operation and wide applicable rotating speed range.
The invention relates to an ultra-precise hydrostatic bearing turntable, which comprises a turntable substrate, wherein copper sleeves are arranged on the inner circle of the turntable substrate, copper rings are respectively arranged on the upper surface and the lower surface of the turntable substrate, the copper sleeves and the copper rings are fixedly connected with the turntable substrate, the copper sleeves and the copper rings form a copper sleeve assembly, a shaft core is arranged on the inner side of the substrate and fixedly connected with an end cover, the shaft core is in clearance fit with the copper sleeves, and the surfaces of the end cover, adjacent to the copper rings, are filled with ultra-precise water.
The invention relates to an ultra-precise hydrostatic bearing turntable, wherein a copper sleeve assembly formed by two copper rings and a copper sleeve forms a structure with an outward opening and a C-shaped section around the inner circular edge of a turntable base body.
The invention relates to an ultra-precise hydrostatic bearing turntable, wherein the upper side and the lower side of a shaft core are respectively fixedly connected with an end cover to form an I-shaped structure.
The invention relates to an ultraprecise hydrostatic bearing turntable, wherein one side of a turntable substrate is provided with a water inlet pipe joint, the water inlet pipe joint is communicated with a water inlet channel formed in the turntable substrate, and the other end of the water inlet channel is connected to a gap between a shaft core and a copper sleeve as well as between an end cover and a copper ring.
The invention relates to an ultraprecise hydrostatic bearing turntable, wherein one side of a turntable substrate is provided with a water return pipe joint, the water return pipe joint is communicated with a water return channel arranged in the turntable substrate, and the other end of the water return channel is connected to a gap between a shaft core and a copper sleeve as well as between an end cover and a copper ring.
The invention relates to an ultraprecise hydrostatic bearing turntable, wherein one side of a turntable substrate is provided with an air inlet pipe joint, the air inlet pipe joint is communicated with an air inlet channel formed in the turntable substrate, and the other end of the air inlet channel is connected between an end cover and a copper ring.
The invention relates to an ultra-precise hydrostatic bearing turntable, wherein a sealing ring is arranged between a copper ring and a lower end cover.
The ultra-precise hydrostatic bearing turntable is different from the prior art in that the copper ring and the copper sleeve are arranged on the turntable, and the compressed water subjected to precise filtration is throttled by the copper ring and the copper sleeve, so that the spindle part is supported to rotate.
The ultra-precise hydrostatic bearing turntable adopts a hydraulic bearing supporting structure, the turntable shaft core component is matched with the copper sleeve component, the shaft core is wrapped in the copper sleeve, the high precision of turntable table surface rotation is ensured, the bearing capacity is high, and the operation is stable.
The ultra-precise hydrostatic bearing turntable adopts pneumatic sealing, the gap between the end cover and the copper ring is blocked by using compressed air, and the sealing ring is embedded in the lower end cover, so that hydraulic medium is difficult to flow out, and the sealing of the turntable is ensured.
The ultra-precise hydrostatic bearing turntable of the present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 2 is a top view of the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 3 is a schematic view of a water inlet structure of the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 4 is a schematic diagram of a return water structure of the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 5 is a schematic view of the pneumatic seal structure of the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 6 is a schematic view of the structure of the spindle in the turntable of the ultra-precise hydrostatic bearing of the present invention;
FIG. 7 is a schematic diagram of an exploded structure of the turntable of the ultra-precise hydrostatic bearing of the present invention;
the labels in the figures are: 1-a turntable substrate; 2-copper ring; 3-copper sleeve; 4-a shaft core; 5-end caps; 6-sealing ring; 7-a water inlet pipe joint; 8-a backwater pipe joint; 9-air inlet pipe joint.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the ultra-precise hydrostatic bearing turntable of the invention comprises a turntable substrate 1, a shaft core 4 and end covers 5, wherein the end covers 5 are positioned on the upper side and the lower side of the turntable substrate 1, and the shaft core 4 is positioned inside the turntable substrate 1.
The copper bush 3 is installed in the interior circle of revolving stage base member 1, and copper bush 3 and base member fixed assembly. The upper surface and the lower surface of the turntable substrate 1 are respectively provided with a copper ring 2, the copper rings 2 are fixedly connected with the turntable substrate 1, and a copper sleeve assembly formed by two copper rings 2 and a copper sleeve 3 forms a structure with an outward opening and a C-shaped section around the inner circular edge of the turntable substrate 1.
The spindle 4 is located inside the turntable base 1. The upper side and the lower side of the shaft core 4 are fixedly connected with one end cover 5 through bolts respectively to form an I-shaped structure, and the shaft core 4 can synchronously rotate along with the end cover 5. The surfaces of the shaft core 4, the copper sleeve 3 and the end cover 5 adjacent to the copper ring 2 are in clearance fit.
As shown in fig. 3, one side of the turntable base body 1 is provided with a water inlet pipe joint 7, the water inlet pipe joint 7 is communicated with a water inlet channel formed in the turntable base body 1, and the other end of the water inlet channel is connected to gaps between the shaft core 4 and the copper sleeve 3 and between the end cover 5 and the copper ring 2. The water inlet pipe joint 7 is connected with a water source, and ultra-precise water is introduced into the turntable base body 1.
As shown in fig. 4, a water return pipe joint 8 is arranged on one side of the turntable base body 1, the water return pipe joint 8 is communicated with a water return channel formed in the turntable base body 1, and the other end of the water return channel is connected to gaps between the shaft core 4 and the copper sleeve 3 and between the end cover 5 and the copper ring 2. The ultra-precise water enters the gap in the turntable through the water inlet channel and is discharged from the water return channel, so that the ultra-precise water is filled between the copper sleeve assembly and the shaft core 4 and the end cover 5, and the support for the rotation of the main shaft component is formed.
As shown in fig. 5, an air inlet pipe joint 9 is arranged on one side of the turntable base body 1, the air inlet pipe joint 9 is communicated with an air inlet channel formed in the turntable base body 1, the other end of the air inlet channel is connected between the end cover 5 and a groove on the surface of the copper ring 2, and a gap between the end cover 5 and the copper ring 2 is sealed by compressed air. The grooves on the surface of the copper ring 2 are not communicated with the waterway.
The upper surface of the lower end cover 5 is provided with a sealing ring 6, and the sealing ring 6 is positioned between the copper ring 2 and the lower end cover 5, so that hydraulic medium is difficult to flow out, and the sealing of the turntable is ensured.
The rotor mounting shaft is arranged in the shaft core 4, and is driven by a torque motor, so that a higher torque can be provided for the turntable. The rotor mounting shaft is provided with the circular grating, and the circular grating reading head is matched with the rotor mounting shaft to realize accurate closed-loop control of the rotating angle of the turntable, so that the rotary table is convenient to use and can be widely applied to various precise ultra-precise numerical control machine tools with rotating shafts, such as lathes, grinding machines, four-axis lathes, five-axis lathes and other devices.
According to the ultra-precise hydrostatic bearing turntable, the copper ring 2 and the copper sleeve 3 are arranged on the turntable, and the compressed water subjected to precise filtration is throttled through the copper ring and the copper sleeve, so that the spindle part is supported to rotate.
The ultra-precise hydrostatic bearing turntable adopts a hydraulic bearing supporting structure, the turntable shaft core 4 component is matched with the copper sleeve 3 component, the shaft core 4 is wrapped in the copper sleeve 3, the high precision of turntable table surface rotation is ensured, the bearing capacity is high, and the operation is stable.
The ultra-precise hydrostatic bearing turntable adopts pneumatic sealing, the gap between the end cover 5 and the copper ring 2 is sealed by compressed air, and the sealing ring 6 is embedded in the lower end cover 5, so that hydraulic medium is difficult to flow out, and the sealing of the turntable is ensured.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (7)
1. An ultraprecise hydrostatic bearing rotary table is characterized in that: including the revolving stage base member, the copper sheathing is installed to the interior circle of revolving stage base member, and a copper ring is installed respectively to the upper and lower surface of revolving stage base member, and copper sheathing and copper ring all constitute copper sheathing subassembly with revolving stage base member fixed connection, and the base member inboard is provided with the axle core, axle core and end cover fixed connection, and the face that axle core and copper sheathing, end cover and copper ring are adjacent is clearance fit, and it has ultra-precise water to fill between copper sheathing subassembly and axle core and the end cover.
2. The ultra-precise hydrostatic bearing turret of claim 1, wherein: the copper sleeve assembly formed by the two copper rings and the copper sleeve forms a structure with an outward opening and a C-shaped section around the inner circular edge of the turntable base body.
3. The ultra-precise hydrostatic bearing turret of claim 1, wherein: the upper side and the lower side of the shaft core are respectively fixedly connected with one end cover to form an I-shaped structure.
4. The ultra-precise hydrostatic bearing turret of claim 1, wherein: one side of the turntable base body is provided with a water inlet pipe joint, the water inlet pipe joint is communicated with a water inlet channel formed in the turntable base body, and the other end of the water inlet channel is connected to a gap between the shaft core and the copper sleeve as well as between the end cover and the copper ring.
5. The ultra-precise hydrostatic bearing turret according to claim 1 or 4, wherein: one side of the turntable base body is provided with a water return pipe joint, the water return pipe joint is communicated with a water return channel formed in the turntable base body, and the other end of the water return channel is connected to a gap between the shaft core and the copper sleeve and between the end cover and the copper ring.
6. The ultra-precise hydrostatic bearing turret of claim 1, wherein: one side of the turntable base body is provided with an air inlet pipe joint, the air inlet pipe joint is communicated with an air inlet channel formed in the turntable base body, and the other end of the air inlet channel is connected between the end cover and the copper ring.
7. The ultra-precise hydrostatic bearing turret of claim 1, wherein: and a sealing ring is arranged between the copper ring and the lower end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704982.1A CN116787174A (en) | 2023-06-14 | 2023-06-14 | Ultra-precise hydrostatic bearing turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704982.1A CN116787174A (en) | 2023-06-14 | 2023-06-14 | Ultra-precise hydrostatic bearing turntable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116787174A true CN116787174A (en) | 2023-09-22 |
Family
ID=88043051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310704982.1A Pending CN116787174A (en) | 2023-06-14 | 2023-06-14 | Ultra-precise hydrostatic bearing turntable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116787174A (en) |
-
2023
- 2023-06-14 CN CN202310704982.1A patent/CN116787174A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109551259B (en) | Direct-drive rotary table system based on hydrostatic composite bearing | |
| CN101829930B (en) | Engine cylinder head numerical control machine for floating ship | |
| CN207026496U (en) | A kind of power spindle head device processed with milling or mill for boring | |
| CN102029530A (en) | Large precise numerical control rotating table | |
| CN112025335A (en) | Ultra-precise hydraulic servo turntable | |
| CN109794636B (en) | Numerical control swinging and rotating milling head structure | |
| CN102699691A (en) | Precision numerical control rotary workbench | |
| CN107131234A (en) | Brake built-in rotary table and its brake control method | |
| CN110594379A (en) | Nut driving type hydrostatic lead screw transmission pair and machine tool | |
| CN116787174A (en) | Ultra-precise hydrostatic bearing turntable | |
| CN109352527B (en) | High-precision grinding wheel frame turret with locking device | |
| CN207840863U (en) | A kind of lathe high-precision dividing apparatus | |
| CN110116370B (en) | Static pressure type high-precision rotary indexing device | |
| CN202388319U (en) | Speed feedback mechanism of worktable of vertical type lathe | |
| CN204234749U (en) | A kind of ultra-thin main spindle box of both-end machining tool | |
| CN104741938A (en) | High-accuracy vertical work table base static seal structure pressing static oil cavity | |
| CN203409520U (en) | Hydrostatic seal structure on lower surface of high-precision vertical worktable | |
| CN202763660U (en) | Right-angle grinding head of numerical-control boring and milling machine | |
| CN110355630B (en) | Pneumatic boring machine grinding device | |
| CN203357015U (en) | Base static pressure seal structure of high-precision vertical type workbench | |
| CN213034061U (en) | Vacuum rotary worktable | |
| CN216656358U (en) | Built-in single-clamp driving spindle | |
| CN203471351U (en) | Thrust support structure of high-precision vertical workbench | |
| CN217647638U (en) | Spiral bevel gear processing machine tool | |
| CN220240666U (en) | Direct-drive horizontal four-axis turntable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |