CN101462235A - Composite closed type static pressure guiding rail workstation - Google Patents
Composite closed type static pressure guiding rail workstation Download PDFInfo
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- CN101462235A CN101462235A CNA2008101546722A CN200810154672A CN101462235A CN 101462235 A CN101462235 A CN 101462235A CN A2008101546722 A CNA2008101546722 A CN A2008101546722A CN 200810154672 A CN200810154672 A CN 200810154672A CN 101462235 A CN101462235 A CN 101462235A
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- static pressure
- turntable
- thrust button
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Abstract
The invention discloses a working platform for a composite closed type hydrostatic guide rail. An axial supporting device comprises an axial upper thrust plate fixedly connected with a turntable; the lower part of the axial upper thrust plate is provided with an axial hydrostatic support fixedly connected with a lathe bed; the lower part of the axial hydrostatic support is provided with an axial lower thrust plate fixedly connected with the axial upper thrust plate; the lower part of the axial upper thrust plate is provided with a guide rail soft belt layer which is connected with the axial hydrostatic support; and oil cavities are arranged between the soft belt layer and the axial hydrostatic support, and between the axial hydrostatic support and the axial lower thrust plate respectively. A radial supporting device comprises a radial bearing liner fixedly connected with the turntable; the outside of the radial bearing liner is connected with a radial hydrostatic support; and an oil cavity is arranged between the radial bearing liner and the radial hydrostatic support. A driving device is a motor, and the oil cavity is communicated with an oil supply system through a restrictor. The working platform is suitable to serve as a rotary working platform for a digital control machine tool with complex functions.
Description
Technical field
The present invention relates to a kind of static pressure guiding rail workstation, particularly a kind of composite closed type static pressure guiding rail workstation.
Background technology
Along with the fast development of numerical control machine tool technique, the needed workbench of Digit Control Machine Tool requires more and more higher, and also increasing to the demand of large-scale workbench, and required precision is more and more higher, also reliability preferably will be arranged, and requires environmental protection, low energy consumption.See that totally being supported with of workbench is following several: traditional rail plate workbench is owing to be to support as rotation by the metal slide guide rail, and the coefficient of friction of metal slide guide rail is higher, so require driving power very big, can generate heat, can not high rotating speed, and the energy consumption height; The conventional rolling bearing workbench, precision can not reach very high state, and bearing has wearing and tearing can lose running accuracy, and large size bearing price comparison costliness; Tradition static pressure workbench has than higher requirement environment, and oil leakage phenomenon is arranged, and pollutes the environment, and using has particular requirement, does not have complex function, and Digit Control Machine Tool, particularly large-size numerical control machine develops to compoundization machine direction, and this requirement has the workbench of complex function guide rail.
Summary of the invention
The present invention provides a kind of composite closed type static pressure guiding rail workstation with complex function for solving the technical problem that exists in the known technology.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of composite closed type static pressure guiding rail workstation, comprise lathe bed, turntable, described turntable is provided with axial supporting device, radial support apparatus, drive unit, described axial supporting device comprises axial the go up thrust button affixed with turntable, be provided with the axial static pressure support affixed below the described axial upward thrust button with lathe bed, described axial static pressure support below be provided with the axially down thrust button affixed with axially going up thrust button, be provided with the guide-soft-band layer below the described axial upward thrust button, described guide-soft-band layer supports with axial static pressure and joins, between described soft belt and axial static pressure support, axially static pressure supports and axially is provided with oil pocket between the thrust button down; Described radial support apparatus comprises the radially bearing shell affixed with turntable, and the periphery of described radially bearing shell is connected to the inner headed face that supports with the affixed radially static pressure of lathe bed mutually, is provided with oil pocket between the inner headed face of the periphery of described radially bearing shell and radially static pressure support; Described drive unit is a motor, and the stator of described motor is fixed in lathe bed, and rotor is fixed in coupling spindle, and described coupling spindle is fixed in radially bearing shell; Described oil pocket is communicated with oil supply system by flow controller.
Above-mentioned composite closed type static pressure guiding rail workstation is characterized in: described guide-soft-band layer is made by the polytetrafluoroethylene (PTFE) sill.
Above-mentioned composite closed type static pressure guiding rail workstation is characterized in: the thickness of described guide-soft-band layer is 1mm～2mm.
Above-mentioned composite closed type static pressure guiding rail workstation is characterized in: described motor is provided with encoder or grating feedback element.
Advantage and good effect that the present invention has are: not only be suitable as the rotary table of different size NC vertical lathe, digital control vertical grinding machine and cnc boring and milling machine, digital control vertical moulding mill teeth machine, moulding gear grinding machines, the more important thing is the rotary table that is suitable as the Digit Control Machine Tool with above-mentioned various lathe complex functions; And it is little to have driving power, the precision height, and the range of speeds is big, reliability height, low energy consumption, environmental protection, characteristics such as multi-functional.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a hydraulic schematic diagram of the present invention.
Among the figure: 1, lathe bed, 2, turntable, 3, flow controller, 4, axially static pressure supports, 4-1,4-2,8-1, oil pocket, 5, axially go up thrust button, 6, axially descend thrust button, 7, the guide rail cushion course, 8, radially static pressure supports, 9, bearing shell radially, 10, motor, 11, coupling spindle, 12, motor supports, and 13, oil supply system, 14, pipeline, 15,16 oil circuit switches, P, oil-in, T, oil return opening.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 and Fig. 2, a kind of composite closed type static pressure guiding rail workstation of the present invention mainly comprises lathe bed 1, turntable 2, and turntable 2 is provided with axial supporting device, radial support apparatus, drive unit.Be characterized in: axially static pressure supports 4 and is installed on the lathe bed 1, axially go up thrust button 5 and axially down thrust button 6 interconnect be positioned at axial static pressure support 4 above and below, the formation closed type structure.Radially static pressure support 8 is installed on the lathe bed 1, and coupling spindle 11 links to each other with turntable 2.Turntable 2 is fixed at last axially to be gone up thrust button 5 and radially forms a whole rotatable part on the bearing shell 9.The stator of drive motors 10 is fixed on the lathe bed 1 by stator support, and rotor is fixed on the coupling spindle 11 by adapter sleeve, and motor 10 drives turntable 2 and rotates.Flow controller 3 is fixed in axial static pressure to be supported on 4, by pipeline oil supply system 13 is linked to each other with flow controller 3.Oil supply system 13 between axially going up thrust button 5 and axially static pressure supporting 4, axially descend thrust button 6 and axially static pressure support 4 between, bearing shell 9 and radially feed pressure oil between the static pressure support 8 radially, guide-soft-band layer 7 is adhered on the axial upward thrust button 5.
Wherein, axial supporting device comprises that the axial static pressure that is installed on the lathe bed 1 supports 4, and axially static pressure supports 4 inside a plurality of pressure oilholes.The axial thrust button 5 of going up interconnects with axial thrust button 6 down, and is positioned at the top and bottom of static pressure support 4, axially goes up thrust button 5 and is solidly installed with turntable 2.Guide-soft-band layer 7 is adhered to by special glue and axially goes up on the thrust button 5, and guide-soft-band layer 7 is provided with oil pocket 4-1 with axial static pressure between supporting 4, axially static pressure support 4 with axial under be provided with oil pocket 4-2 between the thrust button 6; By feed pressure oil make axially go up thrust button 5 and axially static pressure support 4 between the formation hydrodynamic journal liquid polymers be responsible for turntable 2 axial support; Axially form hydrodynamic journal liquid polymers between thrust button 6 and the axial static pressure support 4 down and play the effect that anti-in the axial direction turntable 2 topples.Guide rail cushion course 7 on being adhered to axially below the thrust button 5, play the effect of axial end rail plate when turntable 2 is in the fluid pressure unloading condition when axially upward thrust button 5 is not floated by oil pressure, support turntable 2, have the rigidity height is arranged, the advantage of precision height, absorbing.Turntable 2 is in neat liquid static pressure state when axially going up thrust button 5 and floated by oil pressure simultaneously, oil supply system 13 not during fuel feeding suddenly, and it can also play protection and axially go up thrust button 5 and support 4 with axial static pressure the effects that damage do not take place to grind mutually.
Radial support apparatus comprises the radially bearing shell 9 affixed with turntable, and radially the periphery of bearing shell 9 is connected to mutually with the affixed radially static pressure of lathe bed 1 and supports 8 inner headed face, radially is provided with oil pocket 8-1 between the inner headed face of the periphery of bearing shell 9 and radially static pressure support 8.So that form the radial support that hydrodynamic journal liquid polymers are responsible for turntable 2 between the two.
Be installed on motor as the stator of the motor 10 of drive unit and support on 12, rotor connects coupling spindle 11, drives turntable 2 rotations.
The present invention has complex function, and is main by adjusting oil supply system 13 fuel system and cooperating realization with drive motors 10.When oil supply system 13 to axial static pressure support 4 with axially go up oil pocket 4-1 between the thrust button 5, radially static pressure support 8 and radially during the oil pocket 8-1 fuel feeding between the bearing shell 9, the oil feeding line switch 16 that will lead to oil pocket 4-2 this moment is turned off, the abutment pressure that supports the axial hydrostatic bearing above 4 when axial static pressure is during less than the load on the turntable, be adhered to the guide-soft-band layer of axially going up on the thrust button 57 and be fit-state with axial static pressure support 4, the bearing of this moment only plays static pressure off-load effect, mainly is applicable to as vertical grinding workbench.Because guide-soft-band layer 7 does not break away from axially static pressure support 4 is mutual, belonging to rail plate supports, rigidity is better, and coefficient of friction is low, guide-soft-band layer 7 is hand scrapings, can reach very high precision, and the guide-soft-band layer can play the effect of absorbing, these advantages have satisfied the requirement of high-precision grinding processing; When oil supply system 13 to axial static pressure support 4 with axially go up oil pocket 4-1 between the thrust button 5, axially static pressure support 4 with axially under oil pocket 4-2, radially static pressure support 8 and radially during the oil pocket 8-1 fuel feeding between the bearing shell 9 between the thrust button 6, when the pressure differential up and down of axial hydrostatic bearing during greater than the load on the turntable 2, axially going up thrust button 5 can break away from mutually with axial static pressure support 4, can form oil film between it, it is the neat liquid hydrostatic bearing, at this moment, turntable 2 rotation required driving torques are very little.Because bearing friction is fluid friction, coefficient of friction is very little, can have very high rotating speed, and the hydrodynamic journal liquid polymers support stiffness is very high, at this moment is specially adapted to vertical turning processing; When passing through control oil supply system 13 respectively to axial static pressure support 4 and the axial oil pocket 4-1 that goes up between the thrust button 5, axial static pressure support 4 and axial oil pocket 4-2 between the thrust button 6 down, radially static pressure supports 8 and radially during the oil pocket 8-1 fuel feeding between the bearing shell 9, if desired during calibration, then earlier to oil pocket 4-1,4-2 is fuel feeding simultaneously, make drive motors drive turntable 2 and realize calibration to the relevant position, drive motors 10 reaches required indexing position accurately by encoder or grating feedback element feedback, the oil circuit switch 15 that will lead to oil pocket 4-1 is again turned off, only keep to oil pocket 4-2 fuel feeding, then can support 4 frictional force and realize locking function by sticking at the guide-soft-band layer 7 axially gone up on the thrust button 5 and axial static pressure, the workbench of this calibration and locking function be specially adapted to vertical milling and boring machine.
The guide-soft-band layer can be made by polytetrafluoroethylene (PTFE) (F4J) sill, and thickness is got over Bao Yuehao, is advisable with 1mm～2mm.
Operation principle of the present invention:
The guide-soft-band layer is adhered to axially upward thrust button, and make workbench have complex function by adjusting the oil sources fuel system, at first, when the oil pocket of supporting only for axial static pressure and axially to go up between the thrust button passes to suitable hydraulic oil, but its buoyancy be controlled at rotating part quality about 80%, turntable is not floated, just reduced the working table movement part has reduced drive motors to the normal pressure of last thrust button guide-soft-band load, because guide-soft-band bonding on the last thrust button is through careful scraping, precision is very high, can make workbench obtain very high precision, and its end is jumped can reach 0.003mm, simultaneously owing to do not float, the rigidity of guide rail is big, the resistance to capsizing height, and this state is applicable to accurate grinding, grinding workbench damping in this state is big, can effectively reduce the generation of grinding vibration waviness.Give static pressure supporting disk and last when simultaneously, during down axial thrust button oil pocket fuel feeding, when charge oil pressure has reached suitable numerical value, turntable is floated, make the static pressure supporting disk and the oil film of 0.03～0.06mm thickness is arranged between the axial support dish up and down, at this moment eliminated the dry friction between the surface of solids fully, friction is the neat liquid friction, only there is the interior friction of hydraulic oil, this moment coefficient of friction 0.0005, thereby starting torque and rotating torque all reduce greatly, use same drive motors, under the situation that driving force does not improve, realize that turntable rotates at a high speed, make it to be fit to the turning campaign of needs higher rotation speed.When lathe need carry out calibration location brill, mill, when boring processing has the hole slot of circumference uniform distribution and circumferential registration, adopt encoder or grating feedback, driven by servomotor is carried out the precision round subsection location, simultaneously after finishing the location, remove static pressure dish and the axial oil pressure of going up between thrust button, and only to the static pressure dish with axially descend oil pocket fuel feeding between the thrust button, working table movement is partly pressed to axially go up bonding guide-soft-band on the thrust button, thereby realize locking, need to guarantee the machining accuracy of accurate calibration, as calibration mill teeth, roll flute, bore hole.Above-mentioned situation, radially static pressure support and radially the oil pocket between the bearing shell keep the fuel feeding state always.This composite closed type static pressure guiding rail workstation can be applicable to vertical car, boring simultaneously, mill, bores, grinds composite processing machine tool in sum, also can need be used to vertical lathe, Vertical Mill, boring machine, vertical drill, vertical milling of workbench etc. respectively separately.
Claims (4)
1. composite closed type static pressure guiding rail workstation, comprise lathe bed, turntable, described turntable is provided with axial supporting device, radial support apparatus, drive unit, it is characterized in that, described axial supporting device comprises axial the go up thrust button affixed with turntable, be provided with the axial static pressure support affixed below the described axial upward thrust button with lathe bed, described axial static pressure support below be provided with the axially down thrust button affixed with axially going up thrust button, be provided with the guide-soft-band layer below the described axial upward thrust button, described guide-soft-band layer supports with axial static pressure and joins, between described soft belt and axial static pressure support, axially static pressure supports and axially is provided with oil pocket between the thrust button down; Described radial support apparatus comprises the radially bearing shell affixed with turntable, and the periphery of described radially bearing shell is connected to the inner headed face that supports with the affixed radially static pressure of lathe bed mutually, is provided with oil pocket between the inner headed face of the periphery of described radially bearing shell and radially static pressure support; Described drive unit is a motor, and the stator of described motor is fixed in lathe bed, and rotor is fixed in coupling spindle, and described coupling spindle is fixed in radially bearing shell; Described oil pocket is communicated with oil supply system by flow controller.
2. composite closed type static pressure guiding rail workstation according to claim 1 is characterized in that: described guide-soft-band layer is made by the polytetrafluoroethylene (PTFE) sill.
3. composite closed type static pressure guiding rail workstation according to claim 2 is characterized in that: the thickness of described guide-soft-band layer is 1mm～2mm.
4. composite closed type static pressure guiding rail workstation according to claim 3 is characterized in that: described motor is provided with encoder or grating feedback element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101546722A CN101462235B (en) | 2008-12-30 | 2008-12-30 | Composite closed type static pressure guiding rail workstation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101546722A CN101462235B (en) | 2008-12-30 | 2008-12-30 | Composite closed type static pressure guiding rail workstation |
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| CN101462235A true CN101462235A (en) | 2009-06-24 |
| CN101462235B CN101462235B (en) | 2010-08-11 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029532A (en) * | 2010-11-25 | 2011-04-27 | 天通吉成机器技术有限公司 | Composite sliding seat matched with guide rail of machine tool |
| CN101596679B (en) * | 2009-07-08 | 2011-05-25 | 路文忠 | Hydrostatic guideway of liquid discontinuous flow precise circular turntable |
| CN102145458A (en) * | 2011-03-23 | 2011-08-10 | 西安交通大学 | Rotary table structure for precision finishing machine |
| CN102554637A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Vertical closed-type hydrostatic guide rail with adjustable verticality error |
| CN103419028A (en) * | 2013-08-26 | 2013-12-04 | 苏州江源精密机械有限公司 | Large vertical lathe workbench with C axis function |
| CN105690111A (en) * | 2016-04-08 | 2016-06-22 | 宜昌长机科技有限责任公司 | Self-adaptive static-pressure adjustment supporting device for large rotary workbench and oil film thickness control system and method |
| CN106112569A (en) * | 2016-08-23 | 2016-11-16 | 湖南海捷精密工业有限公司 | A kind of closed hydrostatic slideway |
| CN108213993A (en) * | 2018-03-30 | 2018-06-29 | 科德数控股份有限公司 | A kind of horizontal Five-axis NC Machining Center milling vehicle working bench |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201338195Y (en) * | 2008-12-30 | 2009-11-04 | 天津市第二机床有限公司 | Composite hydrostatic guideway workbench |
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2008
- 2008-12-30 CN CN2008101546722A patent/CN101462235B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101596679B (en) * | 2009-07-08 | 2011-05-25 | 路文忠 | Hydrostatic guideway of liquid discontinuous flow precise circular turntable |
| CN102029532A (en) * | 2010-11-25 | 2011-04-27 | 天通吉成机器技术有限公司 | Composite sliding seat matched with guide rail of machine tool |
| CN102145458A (en) * | 2011-03-23 | 2011-08-10 | 西安交通大学 | Rotary table structure for precision finishing machine |
| CN102145458B (en) * | 2011-03-23 | 2013-12-11 | 西安交通大学 | Rotary table structure for precision finishing machine |
| CN102554637A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Vertical closed-type hydrostatic guide rail with adjustable verticality error |
| CN102554637B (en) * | 2012-02-16 | 2014-02-26 | 厦门大学 | Vertical closed-type hydrostatic guide rail with adjustable verticality error |
| CN103419028A (en) * | 2013-08-26 | 2013-12-04 | 苏州江源精密机械有限公司 | Large vertical lathe workbench with C axis function |
| CN103419028B (en) * | 2013-08-26 | 2015-08-19 | 苏州江源精密机械有限公司 | There is the large-scale vertical lathe workbench of C s function |
| CN105690111A (en) * | 2016-04-08 | 2016-06-22 | 宜昌长机科技有限责任公司 | Self-adaptive static-pressure adjustment supporting device for large rotary workbench and oil film thickness control system and method |
| CN106112569A (en) * | 2016-08-23 | 2016-11-16 | 湖南海捷精密工业有限公司 | A kind of closed hydrostatic slideway |
| CN108213993A (en) * | 2018-03-30 | 2018-06-29 | 科德数控股份有限公司 | A kind of horizontal Five-axis NC Machining Center milling vehicle working bench |
| 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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| CN101462235B (en) | 2010-08-11 |
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