CN205271427U - Slim high accuracy static pressure rotary worktable structure - Google Patents
Slim high accuracy static pressure rotary worktable structure Download PDFInfo
- Publication number
- CN205271427U CN205271427U CN201521003400.4U CN201521003400U CN205271427U CN 205271427 U CN205271427 U CN 205271427U CN 201521003400 U CN201521003400 U CN 201521003400U CN 205271427 U CN205271427 U CN 205271427U
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- bearing shell
- stator
- oil
- static pressure
- pedestal
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Abstract
The utility model discloses a slim high accuracy static pressure rotary worktable structure, unite the bearing bore through arranging the motor in the radial thrust of static pressure, make rotary worktable obtain inflexible while of high thrust, by a wide margin the attenuate rotary worktable's thickness, through setting up public fuel feeding track and public oil return track to radial and footstep bearing while fuel feeding and oil return, the oil circuit structure has been simplified, through on concentrating thrust oil pocket structure and radial oil pocket structure the axle bush that distributes, overall structure's centrality has been strengthened. This static pressure rotary worktable, it is thin to have thickness, and the thrust rigidity is good, compact structure's characteristics.
Description
Technical field
The utility model relates to a kind of rotary table structure for precision and ultra-precision machining lathe, is specifically related to a kind of slim high precision static pressure rotating table structure.
Background technology
The rotary table that static pressure bearing supports, with its high rigidity high-precision low cost, is used widely in precision and ultra-precision machining lathe.
Traditional static pressure rotary worktable, adopts the mode of static pressure bearing and motor axial series, therefore the axial size of rotary table be at least static pressure bearing and motor shaft to the superposition of size, and generally requirement for rotary table is axially thin; The separately design of traditional static pressure rotary worktable transverse bearing and thrust bearing, each oil chamber fuel feeding respectively, the oil return groove of transverse bearing and thrust bearing does not also share, and this causes the complicacy of oil circuit design undoubtedly.
Summary of the invention
The utility model object is to provide a kind of slim high precision static pressure rotating table structure, while ensureing thrust bearing high rigidity, it is desirable to subtract the axial size of thin rotary table, and simplify oil circuit layout, make structure more compact and reasonable.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
By motor being placed in hole in static pressure radial thrust bearing, while making rotary table obtain high thrust rigidity, significantly subtract the thickness of thin rotary table, by arranging public fuel feeding track and public oil return track to radial and thrust bearing fuel feeding and oil return simultaneously, simplify oil channel structures, by by thrust oil recess structure and radial oil recess structure integrated distribution bearing shell, strengthening integrally-built centrality.
For technique scheme, practical novel people also has further embodiment, specific as follows:
Described rotor is fixed on rotor mounting block by flange, and rotor mounting block is directly connected by screw with table top.
Described pedestal half cross section is U-shaped, the only mouth that the outside round platform of pedestal is formed with bearing shell and feed cover plate is connected by screw, the inner side round platform of pedestal is connected by screw with stator rib, stator rib is connected by screw with stator water jacket, it is inner that stator water jacket is positioned at round platform inside pedestal, and it is inner that stator heat is loaded on stator water jacket.
Described motor stator and the axial location of stator water jacket can regulate by changing the axial size of stator rib, and when motor runs, the axial stretching of the stator that stator winding heating brings and stator water jacket does not affect by axial arrangement, freely stretches.
Described bearing shell is provided with annular public fuel feeding track and inside and outside sealed groove, sealing-ring is had in inside and outside sealed groove, exterior seal ring in being compressed by feed cover plate, it is achieved closing of public fuel feeding track, public fuel feeding track communicates with transverse bearing oil chamber and upper and lower thrust bearing oil chamber respectively.
Radial oil chamber oil return ditch and the thrust oil chamber oil return ditch of described bearing shell communicate, bearing shell is provided with annular public oil return track communicate with thrust oil chamber oil return ditch, the public oil return track of annular is by some axial oil return holes, direct oil return is to, in the U-shaped bottom groove of pedestal, therefore transverse bearing and thrust bearing share public oil return track.
Also the static-pressure oil chamber being all provided with 3 or more than 3 on the static-pressure oil chamber being provided with 3 or more than 3 in the inner hole surface of described bearing shell, the upper annulus face of bearing shell and lower annulus face, number is identical with the oily chamber number arranged in the inner hole surface of bearing shell.
Between adjacent oil chamber in the inner hole surface of described bearing shell, between the adjacent oil chamber in the upper annulus face of bearing shell, between the adjacent oil chamber in the lower annulus face of bearing shell, all it is provided with oil return ditch to separate, and oil return ditch communicates with public oil return track or the U-shaped bottom groove of pedestal.
In the interior hole of described rotor mounting block, it is provided with band-type brake and band-type brake mounting block, band-type brake can have the structure formation taking radial band-type brake, after the thin cover of band-type brake leads to pressure medium, distortion is opened in support, support hole in tight rotor mounting block, make table top directly pass on pedestal by rotor mounting block and band-type brake by power, alleviate load burden that is radial and thrust bearing.
Relative to scheme of the prior art, the utility model has the advantages that:
1. motor is placed in brearing bore by the utility model, and rotor is directly connected with table top by rotor mounting block, and the axial dimensional space of motor when saving arranged in series, is significantly thinned the axial size of rotary table.
2. the utility model is provided with public fuel feeding track and public oil return track, it is achieved that transverse bearing and thrust bearing same rail fuel feeding and oil return, simplify oil channel structures.
3. the utility model is by by thrust oil recess structure and radial oil recess structure integrated distribution bearing shell, enhancing integrally-built centrality, convenient actual process and assemble.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is one-piece construction sectional view of the present utility model;
Fig. 2 is bearing shell sectional view of the present utility model;
Fig. 3 is bearing shell vertical view of the present utility model.
In figure: 1, table top, 1-1, outside round platform, 1-2, inboard groove, 2, bearing shell, 2-1, public oil return track, 2-2, axial oil return hole, 2-3, public fuel feeding track, 2-4, inside and outside sealed groove, 2-5, upper annulus face, 2-6, lower annulus face, 2-7, interior hole, 2-8, only mouth, 2-9, radial oil chamber oil return ditch, 2-10, thrust oil chamber oil return ditch, 3, rotor spindle, 4, thrust button, 5, pedestal, 5-1, oil return oil mouth, 5-2, fuel feeding oil mouth, 5-3, outside round platform, 5-4, inner side round platform, 6, rotor mounting block, 6-1, tail end, 6-2, inner hole surface, 6-3, flange, 7, motor rotor, 8, motor stator, 9, disk light beam encoder, 10, magnetism-isolating loop, 11, stator water jacket, 12, stator rib, 13, feed cover plate, 14 band-type brake mounting blocks, 15 band-type brakes.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.
As shown in Figure 1, a kind of slim high precision static pressure rotating table structure. Comprise and comprise table top 1, bearing shell 2, rotor spindle 3, thrust button 4, pedestal 5, rotor mounting block 6, motor rotor 7, motor stator 8, disk light beam encoder 9, magnetism-isolating loop 10, stator water jacket 11, stator rib 12, feed cover plate 13, band-type brake mounting block 14, band-type brake 15.
Motor rotor 7 is fixed on rotor mounting block 6 by flange 6-3, and rotor mounting block 6 is directly connected with inboard groove 1-2 on table top 1.
The U-shaped structure in pedestal 5 half cross section, outside round platform 5-3 with on bearing shell 2 only mouth 2-8 be connected, inner side round platform 5-4 is connected by screw with stator rib 12, stator rib 12 is connected by screw with stator water jacket 11, motor stator 8 heat is loaded in stator water jacket 11, the bottom of U-shape structure is as oil return oil groove, pedestal 5 is provided with oil return oil mouth 5-1 be connected with bottom U-shape structure, pedestal 5 is provided with fuel feeding oil mouth 5-2 and is directly communicated with the public fuel feeding track 2-3 on bearing shell 2 by the hole of crossing on stator gland 13.
Annular public fuel feeding track 2-3 on bearing shell 2, directly to the oil chamber of transverse bearing on bearing shell 2 and upper and lower thrust bearing oil chamber fuel feeding, there is ring seal groove 2-4 public fuel feeding track 2-3 both sides, and feed cover plate 13 is by press seal groove 2-4 inner seal ring, it is achieved closing of annular oil-feed tank.
Feed cover plate 13 thickness is less than on bearing shell 2 the only axial width of mouth 2-8, still leaves only mouth after making compression, after being connected with pedestal 5, and guarantee pedestal 5 and bearing shell 2 concentric.
Axial oil return hole 2-2 is connected with public oil return track 2-1, makes public oil return track inner fluid flow into the U-shaped oil return oil groove of pedestal 5.
The static-pressure oil chamber being provided with 3 or more than 3 on the inner hole surface 2-7 of bearing shell 2, the upper annulus face 2-5 and lower annulus face 2-6 of bearing shell 2 is also provided with the static-pressure oil chamber of 3 or more than 3, and number is identical with the oily chamber number arranged in the inner hole surface of bearing shell.
As shown in Figures 2 and 3, be provided with between adjacent oil chamber on the inner hole surface 2-7 of bearing shell 2 radial oil chamber oil return ditch 2-9, bearing shell upper annulus face 2-5 adjacent oil chamber between, be provided with thrust oil chamber oil return ditch 2-10 between the adjacent oil chamber of lower annulus face 2-6, all oil return ditches communicate with the U-shaped bottom groove of public oil return track 2-1 or pedestal 5.
Hydraulic efficiency oil oils after mouthful 5-2 annular public fuel feeding track 2-3 of inflow from pedestal 5, respectively after respective current regulator throttles, flow into transverse bearing and upper and lower thrust bearing again, bearing rotor floats along with entering of hydraulic efficiency oil, hydraulic efficiency oil is after the oil sealing surface in the oily chamber in radial oil chamber and upper and lower thrust, flow in the respective adjacent oil oil return ditch in chamber or public oil return track 2-3, in the final U-shaped bottom groove flowing into pedestal 5, through oil return mouth 5-1 oil return.
After band-type brake 15 leads to pressure medium, the radial direction distortion of thin-walled place, supports the interior hole 6-2 of tight rotor mounting block 6, can be directly delivered on pedestal 5 by the weighted load of the table top 1 being connected with rotor mounting block 6, alleviates load that is radial and thrust bearing.
In order to realize the accurate control of this rotary table, being also provided with disk light beam encoder 9, disk light beam encoder 9 is arranged on rotor mounting block 6 tail end 6-1.
Above-mentioned example, only for technical conceive of the present utility model and feature are described, its object is to allow person skilled in the art can understand content of the present utility model and specifically implement, can not limit protection domain of the present utility model with this. All equivalent transformations of doing according to the utility model spirit or modification, all should be encompassed within protection domain of the present utility model.
Claims (11)
1. a slim high precision static pressure rotating table structure, comprise table top (1), bearing shell (2), rotor spindle (3), thrust button (4), pedestal (5), rotor mounting block (6), motor rotor (7), motor stator (8), disk light beam encoder (9), magnetism-isolating loop (10), stator water jacket (11), stator rib (12), feed cover plate (13), band-type brake mounting block (14), band-type brake (15), it is characterized in that: bearing shell (2) is connected by screw with feed cover plate (13), rotor spindle (3) is placed in bearing shell (2) interior hole (2-7), table top (1) upper outside round platform (1-1) lays respectively at rotor spindle (3) both sides with thrust button (4) and is connected with rotor spindle (3) with screw,
Rotor mounting block (6) is directly connected by the upper inboard groove (1-2) of screw and table top (1), motor rotor (7) is fixed on the flange (6-3) of rotor mounting block (6) by screw, and disk light beam encoder (9) is fixed on the tail end (6-1) of rotor mounting block (6) by screw;
Pedestal (5) upper outside round platform (5-3) is connected with feed cover plate (13) with screw, pedestal (5) upper inner side round platform (5-4) is connected by screw with stator rib (12), stator water jacket (11) is connected by screw with stator rib (12), motor stator (8) heat is loaded in stator water jacket (11), magnetism-isolating loop (10) is fixed on stator water jacket (11) by screw, is between motor stator (8) and disk light beam encoder (9) axial location;
Band-type brake mounting block (14) and band-type brake (15) are arranged in rotor mounting block (6) hole (6-2).
2. the slim high precision static pressure rotating table structure of one according to claim 1, it is characterized in that, slight clearance is left between the interior hole (2-7) of bearing shell (2) and the cylindrical of rotor spindle (3), form transverse bearing, the upper annulus face (2-5) of bearing shell (2) and lower annulus face (2-6) respectively with, leave slight clearance between the lower annulus face of table top (1) and the upper annulus face of thrust button (4), form the thrust bearing putting distribution.
3. the slim high precision static pressure rotating table structure of one according to claim 2, it is characterized in that, the interior hole (2-7) of bearing shell (2) is provided with the static-pressure oil chamber of 3 or more than 3, also the static-pressure oil chamber being provided with 3 or more than 3 on the upper annulus face (2-5) of bearing shell (2) and lower annulus face (2-6), number is identical with the upper oily chamber number arranged in the interior hole (2-7) of bearing shell (2).
4. the slim high precision static pressure rotating table structure of one according to claim 1, it is characterized in that, rotor mounting block (6), motor rotor (7), motor stator (8), stator water jacket (11), magnetism-isolating loop (10), stator shelves limit (12) are arranged in rotor spindle (3) hole.
5. the slim high precision static pressure rotating table structure of one according to claim 4, it is characterized in that, pedestal (5) is provided with outside round platform (5-3) and inner side round platform (5-4), half cross section is U-shaped, outside round platform (5-3) side of pedestal (5) is provided with fuel feeding oil mouth (5-2) and oil return oil mouth (5-1), fuel feeding oil mouth (5-2) is by the hole excessively on feed cover plate (13), public fuel feeding track (2-3) directly and on bearing shell (2) communicates, by the circular hole on pedestal (5), direct and U-shaped bottom groove communicates in oil return oil mouth (5-1).
6. the slim high precision static pressure rotating table structure of one according to claim 5, it is characterized in that, stator rib (12) was both connected with the inner side round platform (5-4) of pedestal (5) by screw, it is connected with stator water jacket (11) again, the axial location of motor stator (8) and stator water jacket (11) can regulate by changing the axial size of stator rib (12), and motor stator (8) can also freely stretch after generating heat.
7. the slim high precision static pressure rotating table structure of one according to claim 6, it is characterized in that, the axial size of the only mouth (2-8) that the thickness of feed cover plate (13) is less than on bearing shell (2), thus after having assembled feed cover plate (13), still leaving only mouth on bearing shell (2), convenience ensures after being connected with pedestal (5) that the concentric of radial bearing surface gone up by pedestal (5) and bearing shell (2).
8. the slim high precision static pressure rotating table structure of one according to claim 7, it is characterized in that, bearing shell (2) is provided with annular public fuel feeding track (2-3) and inside and outside sealed groove (2-4), sealing-ring is had in inside and outside sealed groove (2-4), exterior seal ring in being compressed by feed cover plate (13), realizing closing of public fuel feeding track (2-3), public fuel feeding track (2-3) communicates with transverse bearing oil chamber and upper and lower thrust bearing oil chamber respectively.
9. the slim high precision static pressure rotating table structure of one according to claim 3, it is characterized in that, it is provided with between adjacent oil chamber on bearing shell (2) interior hole (2-7) that radial oil return ditch (2-9) separates, between upper annulus face (2-5) the adjacent oil chamber of bearing shell (2), between lower annulus face (2-6) the adjacent oil chamber of bearing shell (2), also it is provided with thrust oil chamber oil return ditch (2-10) and separates.
10. the slim high precision static pressure rotating table structure of one according to claim 9, it is characterized in that, radial oil chamber oil return ditch (2-9) of bearing shell (2) and thrust oil chamber oil return ditch (2-10) communicate, bearing shell (2) is provided with public oil return track (2-1) and thrust oil chamber oil return ditch (2-10) communicate, public oil return track (2-1) by some axial oil return holes (2-2) directly oil return to, in the bottom chamber of pedestal (5), therefore transverse bearing and thrust bearing share public oil return track.
The 11. slim high precision static pressure rotating table structures of one according to claim 1, it is characterized in that, in the interior hole (6-2) of rotor mounting block (6), it is provided with band-type brake (15) and band-type brake mounting block (14), appropriate gap is had between the interior hole (6-2) of band-type brake (15) cylindrical and rotor mounting block (6), band-type brake mounting block (14) flange is connected with pedestal (5) by screw, the form of radial band-type brake taked by band-type brake (15), after band-type brake (15) support is tight, table top (1) is made directly to pass on pedestal (5) by power, alleviate load burden that is radial and thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003400.4U CN205271427U (en) | 2015-12-07 | 2015-12-07 | Slim high accuracy static pressure rotary worktable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003400.4U CN205271427U (en) | 2015-12-07 | 2015-12-07 | Slim high accuracy static pressure rotary worktable structure |
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| Publication Number | Publication Date |
|---|---|
| CN205271427U true CN205271427U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521003400.4U Withdrawn - After Issue CN205271427U (en) | 2015-12-07 | 2015-12-07 | Slim high accuracy static pressure rotary worktable structure |
Country Status (1)
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| CN (1) | CN205271427U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414992A (en) * | 2015-12-07 | 2016-03-23 | 西安交通大学 | Thin-wall high-precision static-pressure rotation workbench structure |
| CN105855919A (en) * | 2016-06-19 | 2016-08-17 | 晋江市池店镇泉捷鞋机设计服务部 | Turntable for high-speed dry cutting hobbing machine |
| CN110116370A (en) * | 2019-05-31 | 2019-08-13 | 上海机床厂有限公司 | Hydrostatic profile high-precision rotary indexing means |
| CN110281032A (en) * | 2019-05-24 | 2019-09-27 | 上海拓璞数控科技股份有限公司 | Turnning and milling composite turntable structure |
| CN114131356A (en) * | 2021-12-31 | 2022-03-04 | 姜堰经济开发区科创中心 | High-precision liquid static pressure bearing B-axis turntable device |
-
2015
- 2015-12-07 CN CN201521003400.4U patent/CN205271427U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414992A (en) * | 2015-12-07 | 2016-03-23 | 西安交通大学 | Thin-wall high-precision static-pressure rotation workbench structure |
| CN105414992B (en) * | 2015-12-07 | 2018-01-23 | 西安交通大学 | A kind of slim high precision static pressure rotating table structure |
| CN105855919A (en) * | 2016-06-19 | 2016-08-17 | 晋江市池店镇泉捷鞋机设计服务部 | Turntable for high-speed dry cutting hobbing machine |
| CN105855919B (en) * | 2016-06-19 | 2017-12-15 | 晋江市池店镇泉捷鞋机设计服务部 | A kind of high speed dry cutting gear-hobbing machine turntable |
| CN110281032A (en) * | 2019-05-24 | 2019-09-27 | 上海拓璞数控科技股份有限公司 | Turnning and milling composite turntable structure |
| CN110116370A (en) * | 2019-05-31 | 2019-08-13 | 上海机床厂有限公司 | Hydrostatic profile high-precision rotary indexing means |
| CN114131356A (en) * | 2021-12-31 | 2022-03-04 | 姜堰经济开发区科创中心 | High-precision liquid static pressure bearing B-axis turntable device |
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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: 20160601 Effective date of abandoning: 20180123 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20180123 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |