CN105424361B - A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller - Google Patents
A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller Download PDFInfo
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- CN105424361B CN105424361B CN201510921374.1A CN201510921374A CN105424361B CN 105424361 B CN105424361 B CN 105424361B CN 201510921374 A CN201510921374 A CN 201510921374A CN 105424361 B CN105424361 B CN 105424361B
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- 230000003068 static effect Effects 0.000 title claims abstract description 90
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 230000001050 lubricating effect Effects 0.000 claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 81
- 239000000523 sample Substances 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 4
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- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 3
- 239000002828 fuel tank Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000005457 optimization Methods 0.000 abstract 1
- 125000003003 spiro group Chemical group 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 7
- 230000002706 hydrostatic effect Effects 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- -1 rotary table 1 Chemical compound 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller, according to lubricating pad position, flow controller is arranged on the outside of the turntable of correspondence position, and each flow controller is fixed by seal ring seal with four long spiro nails, every kind of flow controller totally eight.The present invention changes different flow controllers, dynamic and static measurement is carried out respectively to it, oil pocket pressure is measured by eddy current displacement sensor, pressure sensor and temperature sensor respectively, oil film thickness and oil pocket temperature, pass through the vibration shape of acceleration transducer test table workbench, by being arranged on the flow measurement gauging liquid inlet flow rate of turntable oil inlet, pass through the charge oil pressure of the gauge measurement static pressure turntable on fuel tank.The experimental provision is to study influence of the different flow controllers to static pressure turntable load-carrying properties to provide convenience, and saves material cost, and then the problem to solve to run into engineering, the structural parameters of optimization turntable and raising Workpiece Machining Accuracy provide safeguard.
Description
Technical field
The present invention is a kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller, belongs to machine design and manufacture
Field.
Background technology
The construction of innovation ability is《High-grade, digitally controlled machine tools and basic manufacturing equipment》National major scientific and technological project it is important in
Hold.Since 2010, numerical control special project has been laid out including high speed compound Digit Control Machine Tool, precision and ultra-precision machining, grinding, gear
The construction of more than the ten individual innovation ability platforms such as processing, cutter and digital control system, static pressure turntable is accurate ultra Digit Control Machine Tool
Key feature, it play supporting role to workpiece and drives its to carry out high-precision rotary motion, high due to low friction
Bearing capacity, it is widely used in fields such as precision machine tool, Aero-Space, ship, heavy-duty machineries, its load-carrying properties,
Dynamic property and stability have important influence for the working ability and machining accuracy of precision machine tool.It is in particular in：It is quiet
Being vibrated caused by pressing the factors such as foozle of the turntable in operation process due to its guide pass, offset placed load can also strengthen, partially
The probability increase serious, guide pass and lubricating pad can be caused to contact is carried, and then causes oil film to fail, influences turntable normal operation, this
Outside, the fluctuation of charge oil pressure, the deformation of turntable work top etc. can all run on turntable and have an impact and then influence adding for workpiece
Working medium amount, so needing the factor such as rotary speed, foozle, unbalance loading, guide rail facial disfigurement for analysing in depth turntable to turn static pressure
The affecting laws of platform sound state, the restraining factors for influenceing turntable continuous service are dissected, form a set of accurate ultra static pressure turntable
The quiet dynamic analysis theories of system.
Accurate ultra static pressure turntable is generally adopted by constant-pressure type fuel feeding, and flow controller is as constant-pressure type static pressure turntable
Important component, the sound performance of static pressure turntable is directly affected, present invention is generally directed to a fluid pressure rotation table device, devised
A kind of device of modifiable flow controller, different flow controller types can be studied under the operating modes such as different operating pressure, rotating speed, unbalance loading
To the affecting laws of static pressure turntable load-carrying properties, the processing for establishing static pressure turntable test experiments platform and use cost are reduced,
To develop high-mechanic, high-precision accurate ultra static pressure turntable provides foundation.
The content of the invention
Present invention is generally directed to static pressure turntable basic research invention to devise a kind of liquid enclosed of modifiable flow controller
Static pressure turntable experimental provision, it is possible to achieve the replacing and progress of capillary restrictor, orifice restriction device and the membrane feedbacks the flow controller
Dynamic is tested.
The technical problems to be solved by the invention are adopted the following technical scheme that to realize.
A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller, the device include liquid closed type static pressure turntable
System and dynamic signal acquisition processing system, the fluid pressure turntable of liquid closed type static pressure turntable system by circle supporting lubricating pad,
The preloading lubricating pad of annular, journal bearing three parts are formed, wherein circular thrust lubricating pad provides supporting, annular thrust lubricating pad provides pre-
Tightly, enclosed supporting structure is formed, adds the rigidity of static pressure turntable, the radial direction of two four chamber journal bearings control turntable of installation
Displacement and tilting moment, supporting lubricating pad can provide supporting by different flow controllers, and journal bearing is throttled using circular bosses gap
Device, it is evenly distributed on the madial wall of turntable body；Oil supply system be equipped with two motors, a motor control gear pump fluid from
Coarse filter, through check valve, fine filter is flowed into static pressure turntable system, and another motor control gear pump realizes that fluid is strong
Oil return processed.Oil supply system is furnished with temperature-controlling cabinet, makes the control of fluid cryogenic temperature at 23 degree；Transmission system passes through motor driven polywedge bet
It is delivered to after reduction of speed on main shaft；Flow controller is installed to by structure design by the external side of turntable, is convenient for changing, can adopt respectively
With capillary restrictor, orifice restriction device and the membrane feedbacks the flow controller, each flow controller is made up of two parts, and a part is bottom
Seat, another part are throttling part, are connected by four Screws, the another appearance that turntable body is fixed in four big screw
On face；Flowmeter and pressure gauge are separately positioned on turntable oil inlet and fuel tank, are turned for measuring fluid inlet flow rate and static pressure
The charge oil pressure of platform；Rotary table base, which provides, lays turntable and test device.
A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller includes dynamic signal acquisition processing system, should
System includes vibrator, force snesor, eddy current displacement sensor, temperature sensor, pressure sensor and LMS signal acquisitions system
System and PC.By fixing device tightrope free suspension, the other end is placed in static pressure by magnetic support and rotates work for vibrator one end
Make on platform, Position of Vibrating is, by LMS signal acquiring system output drive signals through power amplifier control vibrator frequency；
Force snesor is arranged in the connecting rod of vibrator, and signal feeds back to signal preamplifier and is then input to LMS signal acquisitions
System, then with being sent to PC；Inside the probe embedment turntable body lubricating pad oil pocket of pressure sensor, eight terminations are stretched out in outer end,
In order to facilitate connecting and arranging, encapsulation method, one end connection pressure sensor output end, the other end are taken external connection part
LMS data collecting systems are directly connected to by Data In-Line；In the probe embedment turntable body lubricating pad oil pocket of temperature sensor
Portion, output end can connect digital display, and LMS data collecting systems can also be connected to by conversion equipment；Current vortex displacement senses
Screw thread is carved with device probe, probe is goed deep into magnetic support hole and points to workbench bottom surface, magnetic support, which is connected by screw to be fixed on, to be turned
On stage body；Acceleration transducer eight by magnetic support uniform adsorption on static pressure turntable rotary table, and with each lubricating pad position
Put it is corresponding, for workbench carry out mould measurement.
A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller, the device include liquid closed type static pressure turntable
System and dynamic signal acquisition processing system, the liquid closed type static pressure turntable system are arranged on static pressure turntable pedestal (12),
Including rotary table (1), turntable body (2), circular bosses gap flow controller (3), replaceable flow controller (4), axis system (8) and
Circular static pressure oil pad (37).
The turntable body (2) of liquid closed type static pressure turntable system is by circle supporting lubricating pad, the preloading lubricating pad of annular, journal bearing three
Part is formed, wherein circular thrust lubricating pad provides supporting, annular thrust lubricating pad provides pretension, forms enclosed supporting structure, increase
The rigidity of turntable body (2), the radial displacement of two four chamber journal bearings control turntable of installation and tilting moment, support lubricating pad
Supporting can be provided by different flow controllers, journal bearing uses circular bosses gap flow controller, is evenly distributed on the interior of turntable body
In side wall.
The circular static pressure oil pad (37) is evenly distributed on turntable body (2) for eight totally, and by level pressure fuel feeding system
System (26) fuel feeding；Rotary table (1) is placed above in static pressure oil pad (37), and workbench connects with main shaft (8) bolt, main shaft (8)
Positioning and resistance tipping load are realized by two four chamber journal bearings (38) on turntable body, hydraulic oil passes through circular bosses gap
Flow controller (3) enters journal bearing；Annular hydrostatic bearing (39) is installed in static pressure turntable main shaft bottom, formed with supporting lubricating pad
Closed type structure；Rotary table (1) is placed in rotary table base (12).
The main shaft (8) is the motion that polywedge bet reduction of speed transmission is used by transmission system.
The level pressure oil supply system (26) is that hydraulic oil drives gear pump through oil suction coarse filter (32) by motor (30)
(29) replaceable flow controller (4) is flowed into by check valve (31), fine filter (27) again, finally flowed into lubricating pad oil pocket (14)
Portion；Pressure fixing system is equipped with overflow valve, oil return and forces oil return system, forces oil return to be realized by motor driven gear pump；Fuel feeding system
Under unified central planning to have temperature-controlling cabinet, cryogenic temperature is controlled at 23 degree.
Replaceable flow controller (4) is installed to by the external side of turntable by the structure design to static pressure turntable, is convenient for changing, can
It is capillary restrictor (35), orifice restriction device (34), the membrane feedbacks the flow controller (36) to change flow controller (4)；Capillary-compensated
Device (35), orifice restriction device (34), the membrane feedbacks the flow controller (36) are all made up of two parts, and a part is base, another part
For the part that throttles, connected by four Screws, be separately fixed in four big screw on the outer surface of turntable body (33).
Dynamic signal acquisition processing system include vibrator (19), force snesor (20), eddy current displacement sensor (5),
Temperature sensor (6), pressure sensor (7), LMS signal acquiring systems and PC.
By fixing device tightrope free suspension, the other end is placed in static pressure by magnetic support and rotated for vibrator (19) one end
On workbench (1), Position of Vibrating is (16), is swashed by LMS signal acquiring system output drive signals through power amplifier control
Shake device frequency.Force snesor (20) is arranged in the connecting rod of vibrator (19), then signal feeds back to signal preamplifier
LMS signal acquiring systems are input to, then with being sent to PC.
The probe embedment turntable body lubricating pad oil pocket (14) of pressure sensor (7) is internal, and eight terminations are stretched out in outer end, for convenience
Connection and arrangement, take external connection part encapsulation method, one end connection pressure sensor output end, and the other end passes through data
Input line is directly connected to LMS data collecting systems.
The probe embedment turntable body lubricating pad oil pocket (14) of temperature sensor (6) is internal, output end connection digital display, also by turning
Changing device is connected to LMS data collecting systems.
Screw thread is carved with eddy current displacement sensor (5) probe, probe is goed deep into magnetic support hole and points to workbench bottom surface,
Magnetic support, which is connected by screw, to be fixed on turntable body.
Acceleration transducer (17) eight by magnetic support uniform adsorption on static pressure turntable rotary table (1), and with it is every
Individual static pressure oil pad (37) position is corresponding, for the vibration shape of test table.
The experimental provision of relatively existing static pressure turntable, the present invention have the following advantages：
1st, the present apparatus can change different flow controllers.
2nd, the present apparatus can by apply dynamic load (step load, sinusoidal loading etc.) test static pressure turntable in unbalance loading or
Dynamic response under different excited frequencies；Gantry rotation velocity test temperature and speed can be changed to turntable static and dynamic performance
Influence；Mould measurement can be carried out to static pressure turntable by acceleration transducer.
3rd, the present apparatus is compact-sized, and cost is low, and a good experiment test is provided for static pressure turntable basic research
Platform.
Brief description of the drawings
Fig. 1 is the synthesis experiment platform signal of the liquid closed type static pressure turntable experimental provision of the modifiable flow controller of the present invention
Figure.
Fig. 2 a) be eight circular lubricating pads on static pressure turntable turntable body of the present invention distribution map.
Fig. 2 b) be eddy current displacement sensor of the present invention installation site figure.
Fig. 2 c) be pressure sensor of the present invention installation site figure.
Fig. 2 d) be temperature sensor of the present invention installation site figure.
Fig. 3 is the riding position figure of acceleration transducer and impacting point of the present invention.
Fig. 4 is dynamic signal acquisition processing system in the liquid closed type static pressure turntable experimental provision of the invention for changing flow controller
System schematic diagram.
Fig. 5 is the oil supply system structural representation of the liquid closed type static pressure turntable experimental provision of the modifiable flow controller of the present invention
Fig. 6 is each flow controller structure chart and its installation site figure in the present invention.
Fig. 7 is the location drawing of circular static pressure oil pad, journal bearing and annular static pressure oil pad in the present invention.
In figure：1. rotary table；2. turntable body；3. circular bosses gap flow controller；4. flow controller；5. current vortex displacement passes
Sensor；6. temperature sensor；7. pressure sensor；8. axis system；9. data connecting line；10.LMS data collecting systems；
11.PC machines；12. static pressure turntable pedestal；13. circular static pressure oil pad sealing oil edge；14. circular static pressure oil pad oil pocket；15. oil-recovery tank；
16. impacting point position；17. acceleration transducer；18. tightrope；19. vibrator；20. force snesor；21. data connecting line；22.
To static pressure turntable in-line；23. adjustable pressure table；24. return line；25. force return line；26. level pressure oil supply system；
27. fine filter；28. overflow valve；29. gear pump；30. motor；31. check valve；32. coarse filter；33. flow controller installation position
Put；34. orifice restriction device；35. capillary restrictor；36. the membrane feedbacks the flow controller；37. circular static pressure oil pad；38. radial axle
Hold；39. annular static pressure oil pad
Embodiment
It is real to the liquid closed type static pressure turntable of the modifiable flow controller of the present invention with reference to operation principle and Structure Figure
Experiment device elaborates.
Such as Fig. 1, a kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller, it is characterised in that：The static pressure
Rotation table device is arranged on static pressure turntable pedestal, including rotary table 1, turntable body 2, circular bosses gap flow controller 3, replaceable
Flow controller 4, axis system 8 and circular static pressure oil pad 37；Such as Fig. 2 and Fig. 7, circular static pressure oil pad 37 totally eight peaces that are evenly distributed
On turntable body 2, and by the fuel feeding of level pressure oil supply system 26, rotary table 1 is placed thereon, workbench connects with the bolt of main shaft 8
Connect, main shaft 8 realizes positioning and resistance tipping load by two four chamber journal bearings 38 on turntable body, passes through polywedge bet reduction of speed
Transmit motion；Hydraulic oil enters journal bearing by circular bosses gap flow controller 3, and annular is provided with static pressure turntable main shaft bottom
Hydrostatic bearing 39, closed type structure is formed with supporting lubricating pad；Turntable body is placed in rotary table base 12；Such as Fig. 5, level pressure oil supply system
26 be that hydraulic oil drives gear pump 29 to flow into section by check valve 31, fine filter 27 again through oil suction coarse filter 32 by motor 30
Device 4 is flowed, is finally flowed into inside lubricating pad oil pocket 14；Pressure fixing system equipped with overflow valve, oil return and force oil return system, force oil return by
Motor driven gear pump realizes that oil supply system is furnished with temperature-controlling cabinet, 23 degree of control fluid cryogenic temperature；Such as Fig. 6, by turning to static pressure
Flow controller 4 is installed to the external side of turntable by the structure design of platform, is convenient for changing, and replaceable flow controller is respectively capillary-compensated
Device 35, orifice restriction device 34 and the membrane feedbacks the flow controller 36, each flow controller are made up of two parts, and a part is base, separately
A part is throttling part, is connected by four Screws, is separately fixed in four big screw on the outer surface of turntable body
33；Such as Fig. 4, dynamic signal acquisition processing system includes vibrator 19, force snesor 20, eddy current displacement sensor 5, temperature and passed
Sensor 6, pressure sensor 7, LMS signal acquiring systems and PC.The one end of vibrator 19 is freely hanged by fixing device with tightrope
Hang, the other end is placed on static pressure rotary worktable 1 by magnetic support, Position of Vibrating 16, exported by LMS signal acquiring systems
Pumping signal is through power amplifier control vibrator frequency.Force snesor 20 is arranged in the connecting rod of vibrator 19, and signal is anti-
It is fed to signal preamplifier and is then input to LMS signal acquiring systems, then with is sent to PC.Such as Fig. 2 c), pressure sensor
Inside 7 probe embedment turntable body lubricating pad oil pocket 14, eight terminations are stretched out in outer end, connect and arrange for convenience, outside is connected
Socket part point takes encapsulation method, one end connection pressure sensor output end, and the other end is directly connected to LMS by Data In-Line
Data collecting system；Such as Fig. 2 d) inside the probe of temperature sensor 6 embedment turntable body lubricating pad oil pocket 14, output end can connect
Digital display, LMS data collecting systems can also be connected to by conversion equipment；Such as Fig. 2 b), eddy current displacement sensor 5 probe on
Screw thread is carved with, probe is goed deep into magnetic support hole and points to workbench bottom surface, magnetic support, which is connected by screw, to be fixed on turntable body；Such as
Fig. 3, acceleration transducer 17 8 by magnetic support uniform adsorption on static pressure turntable rotary table 1, it is and quiet with each circle
37 positions of force feed pad are corresponding, for the vibration shape of test table.
In dynamic testing process, first have to fix current vortex displacement on the correspondence position of each hydrostatic support lubricating pad 37
Sensor 5, magnetic support, which is connected by screw, to be fixed on turntable body 2, is carved with screw thread on the probe of sensor 5, probe is goed deep into magnetic support
In hole, both ends attaching nut finger or pliers are clamped with fixation, until sensor probe end face is close under rotary table 1
Surface.By applying dynamic load, the dynamic response of different loads power and load position to turntable load-carrying properties is tested；By setting
Determine turntable rotating speed and time, influence of the test oil temperature to turntable bearer properties.
Dynamic characteristic test experiment can be done using the present apparatus, detailed process is as follows：
(1) eddy current displacement sensor is installed on the magnetic support of turntable body side surface first, for measuring floating for workbench
Amount.
(2) give static pressure turntable system fuel feeding, after turntable workbench floats, obtain the oil film floatation volume of each lubricating pad of turntable with
The curve of time change.
(3) after the workbench of turntable, which floats, reaches steady, give turntable one dynamic load, at dynamic signal acquisition
Reason system will receive the oil film thickness of each lubricating pad under the operating mode, oil pocket pressure versus time curve, set different positions
Put, different size of dynamic load, each lubricating pad will be obtained under different operating modes on oil film thickness and oil pocket pressure etc. with the time
The curve of change.
(4) by vibrator exciting, the excited frequency of vibrator is changed, signal is fed back to signal by accelerated degree sensor
Acquisition system, the characteristics of mode of static pressure turntable can be obtained.
(5) turntable is made to be rotated with certain rate over time, oil temperature will raise, and pass through eddy current displacement sensor, pressure
Force snesor and temperature sensor respectively obtain oil pocket pressure change in turntable lubricating pad, oil film thickness change and temperature rise, Jin Erke
To obtain the change curve of the turntable bearer properties caused by speed.
Claims (3)
- A kind of 1. liquid closed type static pressure turntable experimental provision of modifiable flow controller, it is characterised in that：The device closes including liquid Formula static pressure turntable system and dynamic signal acquisition processing system, the liquid closed type static pressure turntable system are arranged on static pressure turntable base On seat (12), including rotary table (1), turntable body (2), circular bosses gap flow controller (3), replaceable flow controller (4), main shaft System (8) and circular static pressure oil pad (37)；The turntable body (2) of liquid closed type static pressure turntable system is by circle supporting lubricating pad, the preloading lubricating pad of annular, journal bearing three parts Form, provide supporting using circular thrust lubricating pad, annular thrust lubricating pad provides pretension, forms enclosed supporting structure, adds and turns The rigidity of stage body (2), the radial displacement of two four chamber journal bearings control turntable of installation and tilting moment, circle supporting lubricating pad Supporting can be provided by different flow controllers, journal bearing uses circular bosses gap flow controller, is evenly distributed on the interior of turntable body In side wall；The circular static pressure oil pad (37) is evenly distributed on turntable body (2) for eight totally, and by level pressure oil supply system (26) fuel feeding；Rotary table (1) is placed above in circular static pressure oil pad (37), and rotary table connects with axis system (8) bolt Connect, axis system (8) realizes positioning and resistance tipping load, hydraulic oil by two four chamber journal bearings (38) on turntable body Journal bearing is entered by circular bosses gap flow controller (3)；Annular static pressure oil pad (39) is installed in static pressure turntable main shaft bottom, Closed type structure is formed with circle supporting lubricating pad；Rotary table (1) is placed in rotary table base (12)；The axis system (8) is the motion that polywedge bet reduction of speed transmission is used by transmission system；The level pressure oil supply system (26) is that hydraulic oil drives gear pump (29) again through oil suction coarse filter (32) by motor (30) Replaceable flow controller (4) is flowed into by check valve (31), fine filter (27), is finally flowed into circular static pressure oil pad oil pocket (14) Portion；Level pressure oil supply system is equipped with overflow valve, oil return and forces oil return system, forces oil return to be realized by motor driven gear pump；It is fixed Pressure oil supply system is furnished with temperature-controlling cabinet, and cryogenic temperature is controlled at 23 degree；Replaceable flow controller (4) is installed to by the external side of turntable by the structure design to static pressure turntable, is convenient for changing, it is replaceable Flow controller (4) is capillary restrictor (35), orifice restriction device (34), the membrane feedbacks the flow controller (36)；Capillary restrictor (35), orifice restriction device (34), the membrane feedbacks the flow controller (36) are all made up of two parts, and a part is base, and another part is Throttle part, is connected by four Screws, is separately fixed in four big screw on the outer surface of turntable body；Dynamic signal acquisition processing system includes vibrator (19), force snesor (20), eddy current displacement sensor (5), temperature Sensor (6), pressure sensor (7), LMS data collecting systems and PC；Vibrator (19) one end is placed in rotary table by fixing device tightrope free suspension, the other end by magnetic support (1) on, Position of Vibrating is impacting point position (16), by LMS data collecting system output drive signals through power amplifier control Vibrator frequency processed；Force snesor (20) is arranged in the connecting rod of vibrator (19), and signal feeds back to signal preamplifier LMS data collecting systems are then input to, are then delivered to PC；The circular static pressure oil pad oil pocket (14) of the probe embedment turntable body of pressure sensor (7) is internal, and eight terminations are stretched out in outer end, For convenience of connecting and arranging, encapsulation method, one end connection pressure sensor output end are taken external connection part, and the other end leads to Cross Data In-Line and be directly connected to LMS data collecting systems；The circular static pressure oil pad oil pocket (14) of the probe embedment turntable body of temperature sensor (6) is internal, output end connection digital display, LMS data collecting systems are connected to by conversion equipment；Screw thread is carved with eddy current displacement sensor (5) probe, probe is goed deep into magnetic support hole and points to rotary table bottom surface, Magnetic support, which is connected by screw, to be fixed on turntable body；Eight acceleration transducers (17) by magnetic support uniform adsorption on static pressure turntable rotary table (1), and with each circle Shape static pressure oil pad (37) position is corresponding, for the vibration shape of test table.
- 2. a kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller according to claim 1, its feature exist In：In dynamic testing process, first have to fix current vortex displacement biography on the correspondence position of each circular static pressure oil pad (37) Sensor (5), magnetic support, which is connected by screw, to be fixed on turntable body (2), and screw thread is carved with eddy current displacement sensor (5) probe, Probe is goed deep into magnetic support hole, both ends attaching nut finger or pliers are clamped with fixation, until eddy current displacement sensor is visited Lower surface of the end surface close to rotary table (1)；By applying dynamic load, different loads power and load position are tested to turning The dynamic response of platform load-carrying properties；By setting turntable rotating speed and time, influence of the test oil temperature to turntable bearer properties.
- 3. a kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller according to claim 1, its feature exist In：Dynamic characteristic test experiment can be done using the present apparatus, detailed process is as follows：1) eddy current displacement sensor is installed on the magnetic support of turntable body side surface first, for measuring the floatation volume of workbench；2) give static pressure turntable system fuel feeding, after turntable workbench floats, obtain the oil film floatation volume of each lubricating pad of turntable with the time The curve of change；3) after the workbench of turntable, which floats, reaches steady, give turntable one dynamic load, pass through dynamic signal acquisition processing system System will receive the oil film thickness of each lubricating pad under the operating mode, oil pocket pressure versus time curve, set diverse location, no With the dynamic load of size, the song that each lubricating pad changes over time on oil film thickness and oil pocket pressure under different operating modes will be obtained Line；4) by vibrator exciting, the excited frequency of vibrator is changed, signal is fed back to LMS data and adopted by accelerated degree sensor Collecting system, obtain the characteristics of mode of static pressure turntable；5) turntable is made to be rotated with certain rate over time, oil temperature will raise, and pass through eddy current displacement sensor, pressure sensing Device and temperature sensor respectively obtain oil pocket pressure change in turntable lubricating pad, oil film thickness change and temperature rise, and then can obtain The change curve of turntable bearer properties caused by speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921374.1A CN105424361B (en) | 2015-12-13 | 2015-12-13 | A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921374.1A CN105424361B (en) | 2015-12-13 | 2015-12-13 | A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller |
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| CN106767482A (en) * | 2017-01-08 | 2017-05-31 | 北京工业大学 | A kind of miniature precision static pressure laboratory bench top device for detecting deformation |
| CN107132018B (en) * | 2017-07-12 | 2023-08-29 | 北京强度环境研究所 | Static pressure bearing guide device for vibration test system |
| CN107421714B (en) * | 2017-08-07 | 2019-09-03 | 北京工业大学 | A kind of oil pocket observation device that loading end is movable |
| CN108918135A (en) * | 2018-09-26 | 2018-11-30 | 烟台环球机床装备股份有限公司 | A kind of numerical control rotating platform reliability test verifying bench and test verification method |
| CN110887631B (en) * | 2019-12-04 | 2021-10-15 | 中国直升机设计研究所 | Hydraulic acceleration test bed |
| CN111577764B (en) * | 2020-05-18 | 2021-12-17 | 哈尔滨工业大学 | Hydrostatic bearing, hydrostatic rotary table and hydrostatic spindle |
| CN111536150B (en) * | 2020-05-18 | 2021-12-24 | 哈尔滨工业大学 | Surface throttling hydrostatic bearing, hydrostatic rotary table and hydrostatic spindle |
| CN112123199B (en) * | 2020-08-27 | 2022-07-26 | 森合(天津)科技有限公司 | Internal feedback precise closed static pressure rotary table |
| CN114427572B (en) * | 2021-12-20 | 2023-02-28 | 机械科学研究总院海西（福建）分院有限公司 | Flow control method of high-precision high-rigidity hydrostatic pressure device |
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