CN208427974U - A kind of static pressure rotary worktable precision centering device preventing tilting - Google Patents
A kind of static pressure rotary worktable precision centering device preventing tilting Download PDFInfo
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- CN208427974U CN208427974U CN201820470913.3U CN201820470913U CN208427974U CN 208427974 U CN208427974 U CN 208427974U CN 201820470913 U CN201820470913 U CN 201820470913U CN 208427974 U CN208427974 U CN 208427974U
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- static pressure
- rotary worktable
- pressure rotary
- gland
- bearing
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Abstract
The utility model discloses a kind of static pressure rotary worktable precision centering device preventing tiltings, including static pressure rotary worktable mounting seat, static pressure rotary worktable, Biserial cylindrical roller bearing, thrust ball bearing, ring-like backing plate, bearing gland, preload ring, connecting plate, gland, angular encoder, central axis, central axis is fixedly installed in static pressure rotary worktable mounting seat, center outer shaft sleeve is equipped with Biserial cylindrical roller bearing, and the inner hole of Biserial cylindrical roller bearing and matched central axis are with tapered；Preload ring is installed on center shaft, and the outlet of preload ring is set with annular backing plate；On annular backing plate, bearing gland is mounted on preload ring and thrust ball bearing thrust ball bearing；Angular encoder is mounted on bearing gland, and gland is mounted on the upper surface of workbench, and connecting plate connects the output shaft and gland of angular encoder；It is compact-sized, advantages of simple is designed, Anti-inclining significant effect reduces position error, improves positioning accuracy and running accuracy.
Description
Technical field
The utility model relates to be used in the rotating table device technical field of lathe more particularly to a kind of revolution of static pressure
Workbench precision centering device preventing tilting.
Background technique
Domestic and international machine industry numerical control static pressure rotary worktable generally uses bearing support structure or static pressure oil float structure,
Many advantages, such as static pressure oil float structure revolving platform has load-carrying big, at low cost, and rigidity is good, no abrasion, but there is also some simultaneously
Disadvantage, since workbench is in suspended state by static pressure oil, when workpiece is placed on static pressure rotary worktable table top side, partially
The load of weight can cause the inclination of table top.In addition, the foundation and pressure release due to static pressure oil pressure can cause workbench dipping and heaving
Movement, table core is it is difficult to ensure that a fixed position.To which the positioning to static pressure rotary worktable generates an error,
Finally affect the positioning accuracy of static pressure rotary worktable.
Today's numerical control lathe needs to meet more accurate, more efficient operating mode, it is inevitable towards high speed, high precision int,
High reliability direction development trend.In rotating table device as described above, there is the table top due to caused by load and incline
Tiltedly and work top dipping and heaving caused by the foundation and pressure release of itself static pressure oil pressure and the defect of positional shift that generates,
The precision and reliability for directly influencing processing, make the quality of product be unable to reach requirement.
Utility model content
In view of the problems of the above-mentioned prior art, the purpose of this utility model is to disclose a kind of static pressure rotary worktable essence
Close centering device preventing tilting, it is compact-sized, advantages of simple is designed, solves workbench in the case where unbalance loading, workbench can incline
Oblique problem avoids the position error of rotary table, substantially increases its positioning accuracy, improves revolving platform rotation center
Running accuracy.
The purpose of this utility model will be realized through the following technical scheme:
A kind of static pressure rotary worktable precision centering device preventing tilting, including static pressure rotary worktable mounting seat, static pressure
Rotary table, Biserial cylindrical roller bearing, thrust ball bearing, ring-like backing plate, bearing gland, preload ring, connecting plate, gland,
Central axis, the center outer shaft sleeve dress are fixedly installed in the static pressure rotary worktable mounting seat for angular encoder, central axis
There are Biserial cylindrical roller bearing, the centre bore cooperation of the outer ring of the Biserial cylindrical roller bearing and the static pressure rotary worktable
Installation, the inner hole of the Biserial cylindrical roller bearing and matched central axis are with tapered, inner hole and center conical surface of shaft
Cooperation；On center shaft, the outer of preload ring is pressed on the inner ring of the Biserial cylindrical roller bearing, institute for the preload ring installation
The outlet for stating preload ring is set with annular backing plate；The thrust ball bearing is mounted on annular backing plate, and bearing gland is mounted on
On preload ring and thrust ball bearing；The angular encoder is mounted on bearing gland, and the gland is mounted on the upper of workbench
End face, the output shaft and the gland of the connecting plate connection angular encoder.
Further, the outer of the bearing gland is pressed in the upper surface of the thrust ball bearing, and the bearing gland is logical
Overpressure cap screw is installed on center shaft.
Further, the central axis connects integral with the static pressure rotary worktable mounting seat.
Further, the inner hole of the Biserial cylindrical roller bearing and matched central axis have the cone of 1:12
Degree.
Further, the angular encoder is mounted on bearing gland by screw.
Further, the static pressure rotary worktable precision centering device preventing tilting further includes protective cover, the protective cover
It is installed on the upper surface of connecting plate, protective cover is mounted in the centre bore of gland by fixing piece.
The lower end surface of the static pressure rotary worktable and the upper surface of static pressure rotary worktable mounting seat are outstanding by static pressure
Suspension effect occurs for the oil film between surface, and when static pressure rotary worktable does not rotate, static pressure rotary worktable directly bears against static pressure
In rotary table mounting seat, oil film is not filled in the static pressure suspension face between them；When static pressure rotary worktable rotation,
Static pressure suspension face between static pressure rotary worktable and static pressure rotary worktable mounting seat has pressure film filling, so that
Static pressure rotary worktable suspends.
The beneficial effects of the utility model have:
1. worktable rotary division center uses the Biserial cylindrical roller bearing with taper, central axis and bearing inner race are utilized
Cone match eliminate radial clearance, improve the running accuracy of revolving platform rotation center.
2. the present apparatus applies a lower pressure to table core using thrust ball bearing, solves static pressure rotary worktable
In the case where unbalance loading, the problem of workbench can tilt；Meanwhile it solving due to the static pressure oil pressure of its workbench itself
Foundation and pressure release can cause during workbench dipping and heaving operates, table core it is difficult to ensure that the fixed position the problem of,
The position error for largely avoiding rotary table substantially increases its positioning accuracy.
3. the present apparatus can be used for any static pressure rotary worktable, compact-sized, advantages of simple is designed, uses stabilization, assembly
Simply it is easy to dismount, stationarity and high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
1, static pressure rotary worktable mounting seat；2, static pressure rotary worktable；3, Biserial cylindrical roller bearing；4, spiral shell is pre-tightened
Nail；5, ring-like backing plate；6, thrust ball bearing；7, gland screw；8, bearing gland；9, preload ring；10, screw；11, connecting plate；
12, screw；13, screw；14, gland；15, screw；16, protective cover 17, angular encoder；18, central axis；19 biserial cylinders
Roller bearing inner ring；20 static pressure oil suspension faces.
Just drawings and examples in conjunction with the embodiments below, make specific embodiment of the present utility model further detailed
It states, so that technical solutions of the utility model are more readily understood, grasp.
Specific embodiment
Embodiment
The device preventing tilting as shown in Figure 1, a kind of static pressure rotary worktable precision is felt relieved, including static pressure rotary worktable installation
Pedestal 1, Biserial cylindrical roller bearing 3, thrust ball bearing 6, ring-like backing plate 5, bearing gland 8, pre-tightens static pressure rotary worktable 2
Ring 9, connecting plate 11, gland 14, angular encoder 17, central axis 18 and fixing piece.Fixing piece is used as to be connected and fixed, including pre-tightens
Screw 4, gland screw 7, screw 10, screw 12, screw 13, screw 15.
Static pressure rotary worktable mounting seat 1 is typically mounted on a certain component of lathe, workpiece will not be followed to revolve together
Turn, static pressure revolution static pressure rotary worktable then drives the workpiece being fixed thereon to rotate together.Static pressure rotary worktable does not rotate
When, static pressure rotary worktable is directly born against in static pressure rotary worktable mounting seat 1, and the static pressure suspension face between them is not filled out
Oil-filled film turns round static pressure rotary worktable in static pressure and static pressure rotary worktable installs bottom when static pressure rotary worktable is rotated
Static pressure suspension face between seat 1 has pressure film filling, so that static pressure revolution static pressure rotary worktable suspends slightly, no
It is directly contacted with static pressure rotary worktable mounting seat 1, friction resistance force when such static pressure revolution static pressure rotary worktable turns round
It is minimum, and hydraulic principle is utilized, there is very big bearing capacity.
Static pressure rotary worktable 2 is provided with the centre bore for installation, static pressure rotary worktable center double-row cylindrical roller
3 outer ring of bearing is coupled with table core hole, and inner ring is mounted on central axis 18, the bearing inner race and it is matched in
Mandrel has the taper of 1:12, and preload ring 9 is mounted on central axis 18 by pre-loading screw 4, and the outer of preload ring 9 is pressed in double
On line column roller bearing inner ring 19, by tightening pre-loading screw 4 to 19 1 downward axis of Biserial cylindrical roller bearing inner ring
To thrust, since inner ring and axis are cone match, therefore there is swell effect to Biserial cylindrical roller bearing inner ring 19, bearing can be eliminated
Internal clearance, to ensure that the running accuracy at worktable rotary center.
Thrust ball bearing 6 is mounted on 3 outer ring upper end of Biserial cylindrical roller bearing by ring-like backing plate 5, and bearing gland 8 passes through
Gland screw 7 is mounted on central axis 2, and the outer of bearing gland 8 is pressed in the upper surface of thrust ball bearing 6, by tightening gland
Screw 7 is in the center of static pressure rotary worktable to 6 one downward pressure of thrust ball bearing, this pressure, and can play prevents
The effect of table inclination.
Angular encoder 17 is mounted on bearing gland 8 by screw 10, and connecting plate 11 is by screw 12 angular coding
The output shaft of device 17 links together with gland 14, and when worktable rotary, angular encoder 17 can real-time detection rotation angle
Data, gland 14 are mounted in the centre bore of static pressure rotary worktable by screw 13, and 11 periphery of connecting plate passes through four screws
Connecting plate 11 and gland 14 are connected and fixed；Pass through four screws among connecting plate 11 for connecting plate 11 and angular encoder center
Rotating output shaft is fixed.Protective cover 16 is installed on the upper surface of connecting plate 11, is provided with centre bore on the upper surface of gland 14, prevents
Protecting cover 16 is mounted in the centre bore of gland 14 by screw 15.
Groove is also provided on 14 lower end surface of gland, effect is to mitigate weight, reduces working (finishing) area.
Annular backing plate is ring structure, and effect is passing movement, and the upper surface of annular backing plate is provided with annular inner race and passes through
Inner ring positions the bearing being set in inner ring.
Angular encoder uses the encoder of HEIDENHAIN production, model RCN223F；Angular encoder output shaft is logical
Screw is crossed to be connected with connecting plate 11.
When static pressure rotary worktable 2 rotates, the static pressure oil suspension face 20 on 1 periphery of static pressure rotary worktable mounting seat is right
Static pressure rotary worktable 2 generates a upward thrust, and the bearing gland 8 being placed in 2 centre bore of static pressure rotary worktable passes through
One thrust of transmitting, this down thrust pass through bearing gland 8, thrust ball bearing 6, ring-like backing plate 5, biserial to gland screw 7 downwards
3 outer ring of cylinder roller bearing is finally pressed on static pressure rotary worktable 2, this down thrust is in static pressure oil and suspends upward thrust
Center, can play the role of preventing workbench due to unbalance loading cause it is inclined.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (7)
- The device preventing tilting 1. a kind of static pressure rotary worktable precision is felt relieved, which is characterized in that installed including static pressure rotary worktable Pedestal, static pressure rotary worktable, Biserial cylindrical roller bearing, thrust ball bearing, ring-like backing plate, bearing gland, preload ring, connection Central axis, the center is fixedly installed in the static pressure rotary worktable mounting seat in plate, gland, angular encoder, central axis Outer shaft sleeve is equipped with Biserial cylindrical roller bearing, in the outer ring of the Biserial cylindrical roller bearing and the static pressure rotary worktable Heart hole is coupled, and the inner hole of the Biserial cylindrical roller bearing and matched central axis are with tapered, and inner hole is in Mandrel cone match；On center shaft, the outer of preload ring is pressed in the Biserial cylindrical roller bearing for the preload ring installation On inner ring, the outlet of the preload ring is set with annular backing plate；The thrust ball bearing is mounted on annular backing plate, bearing pressure Lid is mounted on preload ring and thrust ball bearing；The angular encoder is mounted on bearing gland, and the gland is mounted on work Make the upper surface of platform, the output shaft and the gland of the connecting plate connection angular encoder.
- The device preventing tilting 2. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that the bearing The outer of gland is pressed in the upper surface of the thrust ball bearing, and the bearing gland is installed on center shaft by gland screw.
- The device preventing tilting 3. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that the center Axis connects integral with the static pressure rotary worktable mounting seat.
- The device preventing tilting 4. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that the biserial The inner hole of cylinder roller bearing and matched central axis have the taper of 1:12.
- The device preventing tilting 5. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that the angle Encoder is mounted on bearing gland by screw.
- The device preventing tilting 6. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that further include preventing Protecting cover, the protective cover are installed on the upper surface of connecting plate, and protective cover is mounted in the centre bore of gland by fixing piece.
- The device preventing tilting 7. static pressure rotary worktable precision according to claim 1 is felt relieved, which is characterized in that static pressure revolution The lower end surface of workbench and the upper surface of static pressure rotary worktable mounting seat are occurred outstanding by the oil film between static pressure suspension face Floating effect, when static pressure rotary worktable does not rotate, static pressure rotary worktable is directly born against in static pressure rotary worktable mounting seat, Do not fill oil film in static pressure suspension face between them；When static pressure rotary worktable rotation, in static pressure rotary worktable and quiet It pushes back the static pressure suspension face between revolving worktable mounting seat and has pressure film filling, so that static pressure rotary worktable suspends Come.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820470913.3U CN208427974U (en) | 2018-04-03 | 2018-04-03 | A kind of static pressure rotary worktable precision centering device preventing tilting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820470913.3U CN208427974U (en) | 2018-04-03 | 2018-04-03 | A kind of static pressure rotary worktable precision centering device preventing tilting |
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| CN208427974U true CN208427974U (en) | 2019-01-25 |
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| CN201820470913.3U Active CN208427974U (en) | 2018-04-03 | 2018-04-03 | A kind of static pressure rotary worktable precision centering device preventing tilting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453519A (en) * | 2018-04-03 | 2018-08-28 | 环球工业机械（东莞）有限公司 | A kind of static pressure rotary worktable precision centering device preventing tilting |
| CN111774888A (en) * | 2020-07-14 | 2020-10-16 | 李春城 | Static pressure support rotary worktable |
| CN112621386A (en) * | 2020-12-23 | 2021-04-09 | 芜湖恒升重型机床股份有限公司 | Rotary angle feedback mechanism of machine tool rotary worktable |
-
2018
- 2018-04-03 CN CN201820470913.3U patent/CN208427974U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453519A (en) * | 2018-04-03 | 2018-08-28 | 环球工业机械（东莞）有限公司 | A kind of static pressure rotary worktable precision centering device preventing tilting |
| CN111774888A (en) * | 2020-07-14 | 2020-10-16 | 李春城 | Static pressure support rotary worktable |
| CN111774888B (en) * | 2020-07-14 | 2022-01-14 | 杭州丹骏机械有限公司 | Static pressure support rotary worktable |
| CN112621386A (en) * | 2020-12-23 | 2021-04-09 | 芜湖恒升重型机床股份有限公司 | Rotary angle feedback mechanism of machine tool rotary worktable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A precise centering and anti tilting device for hydrostatic rotary table Effective date of registration: 20201224 Granted publication date: 20190125 Pledgee: China Co. truction Bank Corp Dongguan branch Pledgor: Global industrial machinery (Dongguan) Co.,Ltd. Registration number: Y2020980009933 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |