CN107939834A - A kind of ultra-precision machine tool hydraulic system of surge suppressing - Google Patents
A kind of ultra-precision machine tool hydraulic system of surge suppressing Download PDFInfo
- Publication number
- CN107939834A CN107939834A CN201711141907.XA CN201711141907A CN107939834A CN 107939834 A CN107939834 A CN 107939834A CN 201711141907 A CN201711141907 A CN 201711141907A CN 107939834 A CN107939834 A CN 107939834A
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- China
- Prior art keywords
- oil
- machine tool
- pressure
- outlet
- oil inlet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0644—Details of devices to control the supply of liquids to the bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Turning (AREA)
Abstract
The invention belongs to pressure oscillation control device, it is related to a kind of ultra-precision machine tool hydraulic system of surge suppressing.It is characterized in that：There are the 2nd accumulator (12) and separator tube (9), the oil outlet of check valve (6) is also connected with the oil inlet and outlet of the 2nd accumulator (12) and the oil inlet of separator tube (9) respectively, the oil outlet of separator tube (9) is connected with the oil inlet of machine tool static-pressure bearing (10), and the oil outlet of machine tool static-pressure bearing (10) is connected by pipeline with fuel tank (11).The present invention proposes a kind of ultra-precision machine tool hydraulic system of surge suppressing, pressure oscillation is avoided to be delivered on ultra-precision machine tool main shaft and guide rail, prevent the Oil Film Supporting unstability of machine tool static-pressure bearing spindle and hydrostatic slideway, the reduction of the kinematic accuracy of main shaft and guide rail is avoided, ensure that the machining accuracy of ultra-precision machine tool.
Description
Technical field
The invention belongs to pressure oscillation control device, it is related to a kind of ultra-precision machine tool hydraulic system of surge suppressing.
Background technology
Since hydrodynamic journal liquid polymers and hydrostatic slideway have the characteristics that bearing capacity is big, precision is high, working stability etc., because
This is passed through frequently with liquid static-pressure support mode when ultra-precision machine tool designs.During Ultra-precision Turning, except by lathe
Itself excitation vibrations that the exterior basis vibrations and lathe motion itself that base imports produce are outer, the oil sources pressure of hydraulic system
On power pulsation also can be by relying on the work of hydrostatic support principle hydrostatic spindle and hydrostatic slideway in hydraulic system transfers to lathe,
Cause the moving component of hydrostatic spindle and hydrostatic slideway to produce micro breadth oscillation, influence the movement essence of hydrostatic spindle and hydrostatic slideway
Degree, the final performance and machining accuracy for influencing lathe.Therefore, for Ultra-precision Turning, except outside lathe basis vibrations with
And excitation vibrations itself is outer, it is also necessary to which the hydraulic system pressure fluctuation to lathe is strictly controlled.A kind of current ultraprecise
For machine tool hydraulic system referring to Fig. 1, it includes crude oil filter 1, accurate constant pressure variable displacement pump 2, overflow valve 3, essential oil filter 4, differential pressure transmitter device
5th, check valve 6, pressure gauge 7, the 1st accumulator 8, machine tool static-pressure bearing 10 and fuel tank 11；The oil inlet of crude oil filter 1 is immersed in fuel tank
Below 12 liquid level, the oil outlet of crude oil filter 1 is connected with the oil inlet of accurate constant pressure variable displacement pump 2, and accurate constant pressure variable displacement pump 2 goes out
Hydraulic fluid port is connected with the oil inlet of essential oil filter 4 and the oil inlet of overflow valve 3 respectively, and the oil outlet of overflow valve 3 is connected with fuel tank, essential oil
The oil outlet of filter 4 is connected with the oil inlet of check valve 6, and two pressure-sensitive mouths of differential pressure transmitter device 5 filter 4 oil inlet with essential oil respectively
Connected with oil outlet, the oil inlet and outlet and lathe of the oil outlet of check valve 6 the pressure-sensitive mouth with pressure gauge 7, the 1st accumulator 8 respectively
The oil inlet connection of hydrostatic bearing 10.Its operation principle is：Oil sources is pumped into liquid by precision constant pressure variable displacement pump 2 from fuel tank 11 during work
Pressure system, overflow valve 3 are used to limit hydraulic system inlet pressure, and for hydraulic oil by essential oil filter 4, it is quiet that the grade of check valve 6 enters lathe
Bearing arrangement is pressed, accumulator 8 is used for surge suppressing, and hydraulic oil is by the reflux oil-feed tank of machine tool static-pressure bearing 10.Its shortcoming
It is：The pressure fluctuation of pumping source will cause the pressure oscillation of hydraulic system, and pressure oscillation can be delivered to ultra-precision machine tool main shaft and lead
On rail, cause the Oil Film Supporting unstability of machine tool static-pressure main shaft and hydrostatic slideway, cause the reduction of the kinematic accuracy of main shaft and guide rail, into
And the machining accuracy of ultra-precision machine tool is caused to reduce.
The content of the invention
The purpose of the present invention is：A kind of ultra-precision machine tool hydraulic system of surge suppressing is proposed, to avoid pressure
Wave transmission is lost on ultra-precision machine tool main shaft and guide rail, preventing the Oil Film Supporting of machine tool static-pressure bearing spindle and hydrostatic slideway
Surely, the reduction of the kinematic accuracy of main shaft and guide rail is avoided, ensures the machining accuracy of ultra-precision machine tool.
The technical scheme is that：A kind of ultra-precision machine tool hydraulic system of surge suppressing, including crude oil filter 1,
Accurate constant pressure variable displacement pump 2, overflow valve 3, essential oil filter 4, differential pressure transmitter device 5, check valve 6, pressure gauge 7, the 1st accumulator 8, lathe are quiet
Last item holds 10 and fuel tank 11；The oil inlet of crude oil filter 1 is immersed in below the liquid level of fuel tank 12, oil outlet and the precision of crude oil filter 1
The oil inlet connection of constant pressure variable displacement pump 2, the oil outlet of accurate constant pressure variable displacement pump 2 filter 4 oil inlet and overflow valve 3 with essential oil respectively
Oil inlet connection, the oil outlet of overflow valve 3 connects with fuel tank, and the oil outlet that essential oil filters 4 is connected with the oil inlet of check valve 6,
Two pressure-sensitive mouths of differential pressure transmitter device 5 are connected with the oil inlet and oil outlet of essential oil filter 4 respectively, the oil outlet difference of check valve 6
Connected with the pressure-sensitive mouth of pressure gauge 7 and the oil inlet and outlet of the 1st accumulator 8；It is characterized in that：There is the 2nd accumulator 12 to ease up
Washing pipe 9, the oil outlet of check valve 6 are also connected with the oil inlet and outlet of the 2nd accumulator 12 and the oil inlet of separator tube 9 respectively, buffering
The oil outlet of pipe 9 is connected with the oil inlet of machine tool static-pressure bearing 10, and the oil outlet of machine tool static-pressure bearing 10 passes through pipeline and fuel tank
11 connections.
It is an advantage of the invention that：A kind of ultra-precision machine tool hydraulic system of surge suppressing is proposed, avoids pressure
Wave transmission is on ultra-precision machine tool main shaft and guide rail, it is therefore prevented that the Oil Film Supporting of machine tool static-pressure bearing spindle and hydrostatic slideway loses
Surely, the reduction of the kinematic accuracy of main shaft and guide rail is avoided, ensure that the machining accuracy of ultra-precision machine tool.Specifically, this hair
It is bright by using accurate constant pressure variable displacement pump, accumulator in parallel multistage, one or more levels separator tube of connecting combining form, take master
Dynamic (pumping source selection) and passive (accumulator, separator tube) double combinations measure, maintains hydraulic oil source in ultra-precision machine tool system
Pressure it is steady, reduce hydraulic system oil sources pressure fluctuation, improve machine tool fluid pressure main shaft and hydrostatic slideway work is steady
It is qualitative, and then improve the overall machining accuracy of ultra-precision machine tool.
Brief description of the drawings
Fig. 1 is a kind of structural principle block diagram of current ultra-precision machine tool hydraulic system.
Fig. 2 is the structural principle block diagram of the present invention.
Embodiment
The present invention is described in further details below.Referring to Fig. 2, a kind of ultra-precision machine tool hydraulic pressure of surge suppressing
System, including crude oil filter 1, accurate constant pressure variable displacement pump 2, overflow valve 3, essential oil filter 4, differential pressure transmitter device 5, check valve 6, pressure gauge 7,
1st accumulator 8, machine tool static-pressure bearing 10 and fuel tank 11；The oil inlet of crude oil filter 1 is immersed in below the liquid level of fuel tank 12, crude oil
The oil outlet of filter 1 is connected with the oil inlet of accurate constant pressure variable displacement pump 2, and the oil outlet of accurate constant pressure variable displacement pump 2 filters 4 with essential oil respectively
Oil inlet connected with the oil inlet of overflow valve 3, the oil outlet of overflow valve 3 is connected with fuel tank, the oil outlet of essential oil filter 4 with it is unidirectional
The oil inlet connection of valve 6, two pressure-sensitive mouths of differential pressure transmitter device 5 are connected with the oil inlet and oil outlet of essential oil filter 4 respectively, unidirectionally
The oil outlet of valve 6 is connected with the pressure-sensitive mouth of pressure gauge 7 and the oil inlet and outlet of the 1st accumulator 8 respectively；It is characterized in that：There is one
2nd accumulator 12 and separator tube 9, the oil outlet of check valve 6 also respectively with the oil inlet and outlet of the 2nd accumulator 12 and separator tube 9
Oil inlet connects, and the oil outlet of separator tube 9 is connected with the oil inlet of machine tool static-pressure bearing 10, the oil outlet of machine tool static-pressure bearing 10
Connected by pipeline with fuel tank 11.
The present invention operation principle be：Fluid enters the 1st accumulator by accurate constant pressure variable displacement pump 2 and related Hydraulic Elements
8 and the 2nd accumulator 12, carries out two-stage pressure buffer and fluctuation suppresses, then the separator tube 9 by connecting in the loop is to residual pressure
Power pulsation is further suppressed and is eliminated, oil supply pressure fluctuation precision required for final acquisition meets machine tool static-pressure bearing 10.
Accurate constant pressure variable displacement pump 2, the 1st accumulator 8, the 2nd accumulator 12 and separator tube 9 in invention need to exist with machine tool static-pressure bearing 10
Need to carry out Proper Match during design.
One embodiment of the present of invention, used crude oil filter, accurate constant pressure variable displacement pump, overflow valve, essential oil filter, pressure difference hair
It is finished parts to interrogate device, check valve, pressure gauge, the 1st accumulator.The pressure controling precision of technical solution shown in Fig. 1 is 14kgf/
cm2±0.5kgf/cm2, 14kgf/cm is realized by technology shown in the present invention2±0.2kgf/cm2Pressure controling precision, it is full
Precision controlling requirement of the foot machine tool static-pressure bearing 10 to hydraulic oil source.
Claims (1)
1. a kind of ultra-precision machine tool hydraulic system of surge suppressing, including crude oil filter (1), accurate constant pressure variable displacement pump (2), overflow
Flow valve (3), essential oil filter (4), differential pressure transmitter device (5), check valve (6), pressure gauge (7), the 1st accumulator (8), machine tool static-pressure bearing
(10) and fuel tank (11)；Crude oil filter (1) oil inlet be immersed in below the liquid level of fuel tank (12), crude oil filter (1) oil outlet with
The oil inlet connection of accurate constant pressure variable displacement pump (2), the oil outlet oil inlet with essential oil filter (4) respectively of accurate constant pressure variable displacement pump (2)
Mouthful connect with the oil inlet of overflow valve (3), the oil outlet of overflow valve (3) is connected with fuel tank, and essential oil filters the oil outlet and unidirectionally of (4)
The oil inlet connection of valve (6), the oil inlet of (4) is filtered with essential oil respectively for two pressure-sensitive mouths of differential pressure transmitter device (5) and oil outlet connects
Logical, the oil outlet of check valve (6) is connected with the pressure-sensitive mouth of pressure gauge (7) and the oil inlet and outlet of the 1st accumulator (8) respectively；It is special
Sign is：Have the 2nd accumulator (12) and a separator tube (9), the oil outlet of check valve (6) also respectively with the 2nd accumulator (12)
Oil inlet and outlet connected with the oil inlet of separator tube (9), the oil outlet of separator tube (9) and the oil inlet of machine tool static-pressure bearing (10)
Connection, the oil outlet of machine tool static-pressure bearing (10) are connected by pipeline with fuel tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141907.XA CN107939834A (en) | 2017-11-16 | 2017-11-16 | A kind of ultra-precision machine tool hydraulic system of surge suppressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141907.XA CN107939834A (en) | 2017-11-16 | 2017-11-16 | A kind of ultra-precision machine tool hydraulic system of surge suppressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939834A true CN107939834A (en) | 2018-04-20 |
Family
ID=61931610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711141907.XA Pending CN107939834A (en) | 2017-11-16 | 2017-11-16 | A kind of ultra-precision machine tool hydraulic system of surge suppressing |
Country Status (1)
| Country | Link |
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| CN (1) | CN107939834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810461A (en) * | 2020-07-24 | 2020-10-23 | 中国人民解放军陆军装甲兵学院 | Hydraulic two-stage oil source for supplying energy by using two-stage energy accumulator |
| CN112762034A (en) * | 2021-02-10 | 2021-05-07 | 山西高行液压股份有限公司 | Ultra-precise hydraulic control method |
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| CN105782136A (en) * | 2014-12-18 | 2016-07-20 | 重庆富鑫玻璃有限公司 | Oil supply system with energy accumulator |
| CN106593975A (en) * | 2016-12-13 | 2017-04-26 | 蚌埠市富瑞达机床机械制造有限公司 | Complete machine hydrostatic guideway oil pump station |
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| CN101384824A (en) * | 2006-02-22 | 2009-03-11 | 贺德克技术有限公司 | Pressure accumulator, in particular pulsation damper |
| CN101952150A (en) * | 2008-02-18 | 2011-01-19 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Pulsation damping capsule |
| JP2011106530A (en) * | 2009-11-16 | 2011-06-02 | Toshiba Mach Co Ltd | Hydraulic feeding device |
| CN101852220A (en) * | 2010-05-04 | 2010-10-06 | 中煤北京煤矿机械有限责任公司 | Controllable high-pressure high-flow generating device and control method thereof |
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| CN203695833U (en) * | 2013-10-30 | 2014-07-09 | 安阳锻压机械工业有限公司 | Vibration-freefull-hydraulicelectro-hydraulic hammer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810461A (en) * | 2020-07-24 | 2020-10-23 | 中国人民解放军陆军装甲兵学院 | Hydraulic two-stage oil source for supplying energy by using two-stage energy accumulator |
| CN112762034A (en) * | 2021-02-10 | 2021-05-07 | 山西高行液压股份有限公司 | Ultra-precise hydraulic control method |
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Application publication date: 20180420 |
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