CN201815876U - Open-type static pressure rotary worktable controlling floating degree - Google Patents
Open-type static pressure rotary worktable controlling floating degree Download PDFInfo
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- CN201815876U CN201815876U CN2010205550607U CN201020555060U CN201815876U CN 201815876 U CN201815876 U CN 201815876U CN 2010205550607 U CN2010205550607 U CN 2010205550607U CN 201020555060 U CN201020555060 U CN 201020555060U CN 201815876 U CN201815876 U CN 201815876U
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Abstract
An open-type static pressure rotary worktable controlling the floating degree is equipped on a heavy-type numerical control rotary worktable and is characterized in that a coaxial hole-basic system clearance fit is provided between cylinders at the lower part of a rotary worktable body and bores of a large tooth ring, the large tooth ring and the worktable fall on a slide base, a large tooth ring bottom surface with high flatness and roughness and statics pressure oil chambers at the upper surface of the slide base form a liquid static pressure guide rail pair, an additional axial thrust bearing structure on a centring structure is correctly assembled according to the design requirement and provides preloads for static pressure guide rails of the worktable, the lower surface of the large tooth ring is grinded to achieve the plane precision, and meanwhile the upper surfaces of the static pressure oil chambers of the slide base are matched and scraped so that the precision of the cooperation between upper and lower static pressure guide rails is guaranteed. The pre-tightening force and the precision of a rotary centring bearing structure and the additional axial thrust bearing structure of the worktable are adjusted. In the design, the thrust bearing structure is added on the basis of a common centring shaft structure, which, on one hand, allows the effective control of the floating degree of the open-type static pressure rotary worktable and meanwhile the effective control of the original preloads of the liquid static pressure guide rail pair, so that the oil film rigidity is enhanced and the motion stability, the motion precision and the bias load resisting ability of the open-type static pressure rotary worktable are increased.
Description
Technical field
This novel relating in the mechanical production devices, heavy machine tool open type static pressure rotary table and revolution centration axis structure thereof.
Technical background
The development of modern Digit Control Machine Tool more and more trends towards at a high speed, high-precision, heavily loaded, and, face requirement equally to the heavy type development as the crucial annex-rotary table of heavy machine tool.As the structural behaviour of the guideway of realizing the NC rotary table gyration and bearing arrangement part, for guaranteeing that working table movement precision, performance indications play an important role.Based on the hydrostatic slideway version of fluid pressure principle because have the bearing capacity height, plurality of advantages such as coefficient of friction is minimum, rigidity is big, precision stability is good, therefore is applied to during machine tool product designs by more and more.Particularly large and medium-sized Digit Control Machine Tool is because that the user requires the bearing capacity of machine tool rotary working table, rotating speed etc. is more and more higher, so can promote bearing capacity, the static pressure structure that reduces coefficient of friction becomes first-selection.The open type static pressure guide rail auxiliary structure at present, is widely used in large and medium-sized Digit Control Machine Tool and uses in the rotary table structure of static pressure principle because it is made simply, and cost is relatively low.Traditional open type static pressure guide rail turntable structure generally only is designed to folk prescription to the carrying form-promptly with the fluid pressure medium formation guide supporting opposite with the workpiece loading direction, its static pressure mode is based on the constant-pressure type static pressure; It is bigger that shortcoming is that the static pressure floatation volume changes with external applied load, the oil film poor rigidity, and the hydrostatic slideway oil film generates difficulty.Therefore having the open type static pressure guide rail key in application is the control problem that will solve the static pressure floatation volume, and oil film rigidity control problem.
Summary of the invention
The purpose of this utility model provides a kind of open type static pressure rotary table and manufacture method thereof, has solved the centering problem of workbench, has controlled workbench static pressure floatation volume well simultaneously, has improved the oil film rigidity of workbench.
The open type static pressure rotary table of control floatation volume, the multi-head pump that comprises work table rotation axle adjective-centre structure, hydraulic floating binding clasp, device for revolving and driving and hydraulic pressure fuel feeding, it is characterized in that the workbench turntable body lower cylindrical and the endoporus of bull gear adopt coaxial basic hole system matched in clearance, bull gear is fixed on the workbench and drops on the slide jointly, the compartment of terrain is provided with the hydraulic floating binding clasp in the space of bull gear protrusion workbench, and the static pressure oil pocket of slide upper surface is communicated with the flowline of quantitative multi-head pump; Have the bull gear bottom surface of higher level degree and roughness and the static pressure oil pocket of slide upper surface and form the hydrostatic slideway pair; The revolution centration axis is installed in the central part of slide, centration axis adopts basic hole system to cooperate with the workbench centre bore, the centration axis periphery deposits spacer ring, goes up spacer ring, settle the axial thrust cylindrical bearing between disk type spring and the Biserial cylindrical roller bearing, be passed down through end cap, disk type spring and distribute ring to make it and the big footpath of centration axis upper end locking by bolt, realize the location; Gear reduction box is installed in the slide side, and two gears on it and bull gear engagement drive work table rotation; The circle grating is installed on centration axis top, realizes workbench circumgyration closed-loop measuring.
In the design,, used quantitative static pressure principle for solving the problem that traditional open type static pressure rotary table bearing capacity is poor, frictional force is difficult to high speed rotary greatly.Bear unbalance loading ability, the uncontrolled problem of levitation height in order to solve traditional open type static pressure panoramic table, then on the centration axis architecture basics of general conduct revolution centering, increased thrust bearing, thrust bearing has effectively been controlled the floatation volume of open type static pressure turntable on the one hand, also effectively carried simultaneously the initial preload of hydrostatic slideway pair, increase the oil film rigidity, improved robust motion, kinematic accuracy and the opposing unbalance loading ability of open type static pressure turntable.It is same when workbench bears unbalance loading, automatic regulatory function effect according to above-mentioned described oil pressure, the draining pressure of the pairing workbench hydrostatic slideway part of the local unbalance loading part of workbench is different with the draining pressure of normal load part, load with this balance unbalance loading part, make the stressed poised state that is in all the time of workbench, the influence that it is subjected to is very little.
Description of drawings
Fig. 1 is the layout schematic diagram of open type static pressure panoramic table when removing workbench;
Fig. 2 is an open type static pressure panoramic table static pressure structural profile schematic diagram;
Fig. 3 is an open type static pressure panoramic table adjective-centre structure generalized section;
Fig. 4 is the enlarged drawing in end cap and the disc spring structure among Fig. 3.
The specific embodiment
The open type static pressure rotary table of control floatation volume, be equipped on the heavy type numerical control rotary table, comprise work table rotation axle adjective-centre structure, as shown in Figure 3, hydraulic floating B axis clamping device 15, revolution driving gearbox 16, the multi-head pump of stationary. platen 17 and hydraulic pressure fuel feeding, focus on its hydrostatic slideway auxiliary structure and the revolution centration axis structure of its cooperation, it is characterized in that workbench turntable body 1 lower cylindrical and the endoporus of bull gear 2 adopt coaxial basic hole system matched in clearance, see Fig. 2, simultaneously bull gear 2 usefulness soket head cap screws are fastened on the workbench, and position with two straight pins, guarantee that workbench is coaxial with bull gear 2, again workbench and bull gear 2 are dropped on the slide 3 jointly, slide 3 upper surfaces have stationary. platen 17, the static pressure oil pocket is communicated with the flowline of quantitative multi-head pump, has bull gear 2 bottom surfaces of higher level degree and roughness and the static pressure oil pocket of slide 3 upper surfaces and forms the hydrostatic slideway pair; See Fig. 1, the compartment of terrain is provided with hydraulic floating B axis clamping device 15 in the space of bull gear 2 protrusion workbench, and the upper and lower part of hydraulic floating binding clasp is placed in the above and below of bull gear, and each binding clasp has six pistons; The circle grating is installed on centration axis top, realizes workbench circumgyration closed-loop measuring.Gear reduction box 16 is installed in the slide side, and two gears on it and bull gear engagement drive work table rotation.When bull gear 2 is subjected to the rotating band of driving gearbox 16 work table rotation, effectively avoided the generation of radial load like this, prevented that gear ring and workbench from forming relative motion, guaranteed the positioning accuracy of work table rotation.
The setting of work table rotation adjective-centre structure is described in conjunction with Fig. 3: revolution centration axis 4 is installed in the central part of slide 3, and centration axis 4 adopts basic hole system to cooperate with the workbench centre bore.Following spacer ring 5 places centration axis 4 periphery shoulder places, the interior ring 7 of Biserial cylindrical roller bearing 6 is positioned at spacer ring 5 upper axial end faces down, the progressive external wall section of dwindling of centration axis 4 external diameters, spacer ring 9 in isometrical section arrangement of centration axis 4 outer walls, the outer shoulder place of centration axis 4 paths settles the lubricated circumferential distribution ring 10 of bearing oil, the near interior bore portion that disk type spring 12 is arranged on it, settle axial thrust cylindrical bearing 11 between the periphery bottom of disk type spring 12 and the outer shroud 8 of Biserial cylindrical roller bearing 6, put end cap 13 above the disk type spring 12, pass end cap 13 by bolt 14, disk type spring 12 and distribution ring 10 make it and 4 isometrical sections upper end locking of centration axis, realize the location.
The shape and the structure of end cap 13 and disk type spring 12: see Fig. 4, end cap 13 and disk type spring 12 are the annulus sheet, and upper surface is the plane, and by internal side diameter open-work is being arranged, and upper surface is the plane separately, all there is notch at the lower surface middle part; The notch of end cap 13 is dark at the middle part, shallow by 1/3 place to outer rim position disappearance; To internal diameter, and its internal diameter to the notch of open-work wall periphery is less than the middle part to the notch of disk type spring 12 lower surfaces by outer rim 2/7 place; End cap 13 is descending inner hole sleeve on the little external diameter of centration axis 4 top shoulders at last, disk type spring 12, and end cap 13 outer rim positions disappearance forms the gap with disk type spring 12 upper surfaces.The gap that to reserve between disk type spring 12 above the high accuracy axial thrust cylindrical bearing 11 and end cap 13 by adjusting bolt 14 is adjusted to 0.05mm, be workbench turntable body 1 downward preloading is provided, be subjected to the stable static pressure of the common formation of static pressure that floats that makes progress that hydrostatic slideway provides on the slide with workbench and float motion, and be fixed within this scope.
Simultaneously by adjusting the thickness of spacer ring 5 down, the axial location of interior ring 7 that changes Biserial cylindrical roller bearing 6 makes it reach preloading of design parameter scope and running accuracy to adjust the end-play of Biserial cylindrical roller bearing 6.Remove the outer shroud 8 of Biserial cylindrical roller bearing 6 during adjustment, use range to satisfy the bearing clearance measurement mechanism of the GN gauge of this bearing adjustment as Biserial cylindrical roller bearing 6, the thickness of spacer ring 5 reduces end-play, the increase pretightning force of Biserial cylindrical roller bearing 6 gradually under the grinding, be as the criterion to reach the pretightning force value of stipulating on the bearing sample, finish the centering adjustment of Biserial cylindrical roller bearing 6.When the external applied load that workbench turntable body 1 is subjected to changes (increase or reduce), the hydrostatic slideway oil film thickness is corresponding will to change (reduce or increase), and then cause the draining resistance to change (increase or reduce), be draining pressure change (increase or reduce), realize the oil pressure autobalance, with this balance workbench load change part, the external applied load that realization workbench 1 is subjected to is to be in the static balance state all the time when changing; The hydrostatic slideway rigidity can be adjusted the preset clearance between spring 12 and the end cap 13 when assembling.
When static pressure floats, thrust bearing 11 can be along with workbench turntable body 1 moves up simultaneously, disk type spring 12 is subjected to static pressure and lifts power at this moment, the neighboring can produce strain upwards, and end cap 13 adopts the carbon constructional quality steel material, has high rigidity, and the neighboring is lower than inner rim 0.05mm on structural design, this gap has just limited the deflection of disk type spring 12 neighborings, has also limited the static pressure floatation volume simultaneously; When turntable was static, disk type spring 12 returned to initial position again, guaranteed to be always thrust bearing 11 and applied preload.
Claims (3)
1. control the open type static pressure rotary table of floatation volume, the multi-head pump that comprises work table rotation axle adjective-centre structure, hydraulic floating binding clasp, device for revolving and driving and hydraulic pressure fuel feeding, it is characterized in that the workbench turntable body lower cylindrical and the endoporus of bull gear adopt coaxial basic hole system matched in clearance, bull gear is fixed on the workbench turntable body and drops on the slide jointly, the compartment of terrain is provided with the hydraulic floating binding clasp in the space of bull gear protrusion workbench, and the static pressure oil pocket of slide upper surface is communicated with the flowline of quantitative multi-head pump; Have the bull gear bottom surface of higher level degree and roughness and the static pressure oil pocket of slide upper surface and form the hydrostatic slideway pair; The revolution centration axis is installed in the central part of slide, centration axis adopts basic hole system to cooperate with workbench turntable body centre bore, the centration axis periphery deposits spacer ring, goes up spacer ring, settle the axial thrust cylindrical bearing between disk type spring and the Biserial cylindrical roller bearing, be passed down through end cap, disk type spring and distribute ring to make it and the big footpath of centration axis upper end locking by bolt, realize the location; Gear reduction box is installed in the slide side, and two gears on it and bull gear engagement drive work table rotation; The circle grating is installed on centration axis top, realizes workbench circumgyration closed-loop measuring.
2. the open type static pressure rotary table of control floatation volume according to claim 1, it is characterized in that the setting of work table rotation adjective-centre structure: revolution centration axis (4) is installed in the central part of slide (3), and centration axis (4) adopts basic hole system to cooperate with the workbench centre bore; Following spacer ring (5) places centration axis (4) periphery shoulder place, the interior ring (7) of Biserial cylindrical roller bearing (6) is positioned at spacer ring (5) upper axial end face down, the progressive external wall section of dwindling of centration axis (4) external diameter, spacer ring (9) in isometrical section arrangement of centration axis (4) outer wall, the outer shoulder place of centration axis (4) path settles the lubricated circumferential distribution ring (10) of bearing oil, the near interior bore portion that disk type spring (12) is arranged on it, settle axial thrust cylindrical bearing (11) between the outer shroud (8) of the periphery bottom of disk type spring (12) and Biserial cylindrical roller bearing (6), put end cap (13) above the disk type spring (12), pass end cap (13) by bolt (14), disk type spring (12) and distribution ring (10) make it and isometrical section upper end locking of centration axis (4), realize the location.
3. the open type static pressure rotary table of control floatation volume according to claim 1, the shape and the structure that it is characterized in that end cap (13) and disk type spring (12): end cap (13) and disk type spring (12) are the annulus sheet, upper surface is the plane, and open-work arranging by internal side diameter, upper surface is the plane separately, all there is notch at the lower surface middle part; The notch of end cap (13) is dark at the middle part, shallow by 1/3 place to outer rim position disappearance; To internal diameter, and its internal diameter to the notch of open-work wall periphery is less than the middle part to the notch of disk type spring (12) lower surface by outer rim 2/7 place; End cap (13) is descending inner hole sleeve on the little external diameter of centration axis (4) top shoulder at last, disk type spring (12), and end cap (13) outer rim position disappearance forms the gap with disk type spring (12) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205550607U CN201815876U (en) | 2010-09-29 | 2010-09-29 | Open-type static pressure rotary worktable controlling floating degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205550607U CN201815876U (en) | 2010-09-29 | 2010-09-29 | Open-type static pressure rotary worktable controlling floating degree |
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| CN201815876U true CN201815876U (en) | 2011-05-04 |
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| CN2010205550607U Expired - Fee Related CN201815876U (en) | 2010-09-29 | 2010-09-29 | Open-type static pressure rotary worktable controlling floating degree |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039527A (en) * | 2010-09-29 | 2011-05-04 | 中捷机床有限公司 | Open-type static pressure rotating table for controlling floating degree and manufacturing method thereof |
| CN102501078A (en) * | 2011-11-10 | 2012-06-20 | 大连永明数控机床有限公司 | Novel workbench |
| CN103048126A (en) * | 2012-12-12 | 2013-04-17 | 北京工业大学 | Loading device for load-unbalance experiment of static-pressure rotary table |
| CN103551866A (en) * | 2013-11-04 | 2014-02-05 | 大连飞达重型机床制造有限公司 | Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable |
| CN106425469A (en) * | 2016-11-28 | 2017-02-22 | 大连豪森今日自动化有限公司 | Rotary table floating mechanism |
| CN108655915A (en) * | 2018-05-15 | 2018-10-16 | 浙江辛子精工机械股份有限公司 | A kind of super-huge numerical control vertical grinding machine |
| CN110091186A (en) * | 2019-04-11 | 2019-08-06 | 山东普鲁特机床有限公司 | A kind of inserted direct drive turning workbench using hydrostatic slideway |
| CN114347170A (en) * | 2021-11-26 | 2022-04-15 | 陈春兰 | Bushing device for wrapping heat-shrinkable tube by button battery |
| WO2023115746A1 (en) * | 2021-12-20 | 2023-06-29 | 中国机械总院集团海西(福建)分院有限公司 | Flow control method for high-precision and high-rigidity hydrostatic pressure device |
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2010
- 2010-09-29 CN CN2010205550607U patent/CN201815876U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039527A (en) * | 2010-09-29 | 2011-05-04 | 中捷机床有限公司 | Open-type static pressure rotating table for controlling floating degree and manufacturing method thereof |
| CN102039527B (en) * | 2010-09-29 | 2013-03-13 | 中捷机床有限公司 | Open-type static pressure rotating table for controlling floating degree and manufacturing method thereof |
| CN102501078A (en) * | 2011-11-10 | 2012-06-20 | 大连永明数控机床有限公司 | Novel workbench |
| CN103048126A (en) * | 2012-12-12 | 2013-04-17 | 北京工业大学 | Loading device for load-unbalance experiment of static-pressure rotary table |
| CN103048126B (en) * | 2012-12-12 | 2015-07-22 | 北京工业大学 | Loading device for load-unbalance experiment of static-pressure rotary table |
| CN103551866A (en) * | 2013-11-04 | 2014-02-05 | 大连飞达重型机床制造有限公司 | Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable |
| CN106425469A (en) * | 2016-11-28 | 2017-02-22 | 大连豪森今日自动化有限公司 | Rotary table floating mechanism |
| CN108655915A (en) * | 2018-05-15 | 2018-10-16 | 浙江辛子精工机械股份有限公司 | A kind of super-huge numerical control vertical grinding machine |
| CN108655915B (en) * | 2018-05-15 | 2023-05-02 | 浙江辛子精工机械股份有限公司 | Super-huge numerical control vertical mill |
| CN110091186A (en) * | 2019-04-11 | 2019-08-06 | 山东普鲁特机床有限公司 | A kind of inserted direct drive turning workbench using hydrostatic slideway |
| CN114347170A (en) * | 2021-11-26 | 2022-04-15 | 陈春兰 | Bushing device for wrapping heat-shrinkable tube by button battery |
| CN114347170B (en) * | 2021-11-26 | 2024-04-12 | 东莞市东赞锂能源科技有限公司 | Sleeve device for button cell wrapped heat shrinkage pipe |
| WO2023115746A1 (en) * | 2021-12-20 | 2023-06-29 | 中国机械总院集团海西(福建)分院有限公司 | Flow control method for high-precision and high-rigidity hydrostatic pressure device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20130929 |