CN105108498A - Hydrostatic guideway - Google Patents
Hydrostatic guideway Download PDFInfo
- Publication number
- CN105108498A CN105108498A CN201510522434.2A CN201510522434A CN105108498A CN 105108498 A CN105108498 A CN 105108498A CN 201510522434 A CN201510522434 A CN 201510522434A CN 105108498 A CN105108498 A CN 105108498A
- Authority
- CN
- China
- Prior art keywords
- oil
- hydrostatic slideway
- pieces
- free end
- oil pocket
- Prior art date
- 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
-
- 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
-
- 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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to the technical field of precision and ultra-precision machining, and discloses a hydrostatic guideway. The hydrostatic guideway comprises an oil inlet device, a motion guideway, an elastic choked flow structure and a fixed guideway, the motion guideway is upward provided with an oil cavity from the bottom, the oil inlet device is communicated with the top of the oil cavity, one end of the elastic choked flow structure is fixedly connected with the oil cavity, the other end of the elastic choked flow structure is a free end, the fixed guideway is located below the oil cavity of the motion guideway, and oil penetrates through a gap between the free end and the oil cavity and a gap between the free end and the fixed guideway in sequence and forms an oil film layer between the fixed guideway and the motion guideway. According to the hydrostatic guideway, the elastic choked flow structure is directly installed inside the hydrostatic guideway, response can be conducted rapidly and accurately according to load changes, and the thickness of an original oil film layer is restored.
Description
Technical field
The present invention relates to precise and ultraprecise machining technical field, particularly relate to a kind of hydrostatic slideway.
Background technology
Hydrostatic slideway has that rigidity is large, bearing capacity is strong, precision is high, coefficient of friction is little, steady operation and other merits, and therefore hydrostatic slideway is widely used in aeronautical and space technology, civilian manufacturing technology, Precision and Ultra-precision Machining technical field.
In order to make hydrostatic slideway have certain rigidity to adapt to the change of load, the pressure in hydrostatic slideway carrying oil pocket must be adjusted by compensating element, make it to change with load.Existing compensating element, is generally flow controller, hydraulic oil in hydrostatic slideway is by flowing in guide rail oil pocket after the throttling action of flow controller, when acting on the change of the load on guide rail, by regulating liquid resistance or the flow of flow controller, thus the pressure in oil pocket is regulated, the oil film thickness between guide rail is ensured constant.But be communicated with by one section of responsive oil circuit between the outlet of this type of flow controller and the entrance of oil pocket, due to compressibility and the effect of inertia of the hydraulic oil in responsive oil circuit, flow controller regulates for the pressure in oil pocket to be existed certain delayed, have impact on oil film thickness of hydrostatic guide way to the accuracy of load change response and rapidity.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide hydrostatic slideway, solving responsive oil circuit affects the accuracy of oil film thickness of hydrostatic guide way to load response and the problem of rapidity.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of hydrostatic slideway, comprise oil feeding device, motion guide rail, elasticity reducing-flow structure and fixed guide, described motion guide rail upwards offers oil pocket by bottom, described oil feeding device is communicated with described oil pocket top, described elasticity reducing-flow structure one end is fixedly connected with oil pocket, the other end is free end, described fixed guide is positioned at below described motion guide rail, oil is successively through the gap described free end and oil pocket, gap between described free end and fixed guide, and oil lamella is formed between fixed guide and motion guide rail.
Wherein, described elasticity reducing-flow structure comprises two pieces of elastic membranes, two pieces of elastic membranes are horizontally set with in described oil pocket, and two pieces of elastic membranes are positioned at same plane, two pieces of elastic membranes mutually away from two ends be fixedly connected with oil pocket respectively, two ends close to each other are free end, and oil successively through the gap two free ends, gap between each free end and fixed guide, and forms oil lamella between fixed guide and motion guide rail.
Wherein, described hydrostatic slideway also comprises press box, and two pieces of elastic membranes are fitted on described oil pocket bottom face, and described press box is pressed together on the lower surface of two pieces of elastic membranes, and described press box is used for fixing two pieces of elastic membranes.
Wherein, described elastic membrane is spring steel plate.
Wherein, described hydrostatic slideway also comprises fixture, and described fixture successively through press box, elastic membrane, and is fixedly connected with the bottom face of oil pocket.
Wherein, described fixture is fastening bolt.
Wherein, described press box is provided with counter sink, described counter sink is for holding described fastening bolt.
Wherein, described oil pocket top offers oil inlet passage, and described oil feeding device is communicated with described oil inlet passage, and described oil inlet passage is communicated with described oil pocket.
Wherein, described oil feeding device comprises oil pump, fixed restriction device and overflow valve, and described oil pump, fixed restrictive valve are communicated with in turn with oil inlet passage, and described overflow valve is arranged on the branch road of oil pump.
(3) beneficial effect
The hydrostatic slideway that the object of this invention is to provide, when motion guide rail there being load effect, the pressure at oil lamella place is made to become large, while reducing oil lamella thickness, the gap between the free end of elasticity reducing-flow structure and fixed guide is impelled to become large, thus reduction elasticity reducing-flow structure hinders the throttling liquid of oil, and then impel oil to accelerate to flow to oil lamella from oil feeding device, recover original oil lamella thickness rapidly and accurately; Elasticity reducing-flow structure is directly installed on hydrostatic slideway inside, can make a response quickly and accurately according to the change of load and recover original oil lamella thickness.
Accompanying drawing explanation
Fig. 1 is the static-pressure guide rail structure signal of the embodiment of the present invention.
In figure, 1: oil feeding device;
11: oil pump; 12: fixed restriction device; 13: overflow valve;
14: oil inlet passage;
2: motion guide rail;
3: oil pocket;
4: elasticity reducing-flow structure;
5: press box;
6: fixture;
7: fixed guide.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance for illustration of the present invention, but is not used for limiting the scope of the invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of hydrostatic slideway, comprise oil feeding device 1, motion guide rail 2, elasticity reducing-flow structure 4 and fixed guide 7, described motion guide rail 2 upwards offers oil pocket 3 by bottom, described oil feeding device 1 is communicated with described oil pocket 3 top, described elasticity reducing-flow structure 4 one end is fixedly connected with oil pocket 3, the other end is free end, described fixed guide 7 is positioned at below described motion guide rail 2, oil is successively through the gap described free end and oil pocket 3, gap between described free end and fixed guide 7, and oil lamella is formed between fixed guide 7 and motion guide rail 2.
In the embodiment of the present invention, at oil feeding device 1 not in motion guide rail 2 oil pocket 3 during fuel feeding, elasticity reducing-flow structure 4 is in straight state; When oil feeding device 1 is to oil pocket 3 fuel feeding, the pressure that oil feeding device 1 provides to hydraulic oil remains unchanged, under the pressure effect of hydraulic oil, the free end of elasticity reducing-flow structure 4 is bent downwardly distortion, and gradually near fixed guide 7, hydraulic oil is successively through the gap free end and oil pocket 3, gap between free end and fixed guide 7, thus enter between fixed guide 7 and motion guide rail 2 and form oil lamella, due to the lubrication of oil lamella, be convenient to relative sliding between fixed guide 7 and motion guide rail 2; Wherein, hydraulic oil is in the gap between free end and fixed guide 7, can be subject to the resistance that own elasticity reducing-flow structure 4 free end is certain, and unit interval hydraulic oil is also fixing from the amount that the present invention is flowed out, in addition, the pressure that oil feeding device 1 provides to hydraulic oil remains unchanged, therefore, hydraulic oil can flow between fixed guide 7 and motion guide rail 2 with fixing speed, is formed and has certain thickness oil lamella;
When motion guide rail 2 there being load effect, motion guide rail 2 has the trend of moving to fixed guide 7, certainly will form extruding to current oil lamella, the pressure at oil lamella place is made to become large, can strengthen the resistance to hydraulic oil further, therefore, oil lamella thickness can reduce to a certain extent, and simultaneously, oil lamella place becomes large pressure and also can be applied on elasticity reducing-flow structure 4 free end, thus elasticity reducing-flow structure 4 free end deflection is reduced, namely move upward, so, namely the gap between the free end of elasticity reducing-flow structure 4 and fixed guide 7 is impelled to become large, thus reduce the throttling liquid resistance of elasticity reducing-flow structure 4 pairs of hydraulic oil, now, what hydraulic oil was subject to increases with joint efforts on the contrary, namely hydraulic oil can be impelled to accelerate to flow to oil lamella from oil feeding device 1, above process almost completes at the same time, it is inner that this change procedure all occurs in oil pocket 3, therefore this hydrostatic slideway is comparatively responsive to the change of load, can regulate the pressure in oil pocket 3 quickly and accurately, can make a response quickly and accurately according to the change of load and recover original oil lamella thickness, ensure the friction between fixed guide 7 and motion guide rail 2.
As shown in Figure 1, in the embodiment of the present invention, described elasticity reducing-flow structure 4 comprises two pieces of elastic membranes, two pieces of elastic membranes are horizontally set with in described oil pocket 3, and two pieces of elastic membranes are positioned at same plane, two pieces of elastic membranes mutually away from two ends be fixedly connected with oil pocket 3 respectively, two ends close to each other are free end, oil successively through the gap two free ends, gap between each free end and fixed guide 7, and forms oil lamella between fixed guide 7 and motion guide rail 2.
Wherein, the implementation of elasticity reducing-flow structure 4 has multiple, can comprise monolithic elastic membrane, and also can be polylith, the embodiment of the present invention then adopts the structure of two pieces of elastic membranes, is convenient to change flexibly the liquid flowing resistance of hydraulic oil.
As shown in Figure 1, described hydrostatic slideway also comprises press box 5, and two pieces of elastic membranes are fitted on described oil pocket 3 bottom face, and described press box 5 is pressed together on the lower surface of two pieces of elastic membranes, and described press box 5 is for fixing two pieces of elastic membranes.The effect of press box 5 is to be fixed elastic membrane.
As shown in Figure 1, described elastic membrane is spring steel plate.Preferably there is the spring steel of excellent mechanical performances and fatigue behaviour, as 65Mn.
As shown in Figure 1, described hydrostatic slideway also comprises fixture 6, and described fixture 6 successively through press box 5, elastic membrane, and is fixedly connected with the bottom face of oil pocket 3.
As shown in Figure 1, described fixture 6 is fastening bolt.
In the embodiment of the present invention, can be formed fixing to press box 5, elastic membrane by fastening bolt, also can directly adopt adhesive elastic membrane and press box 5 to be bonded on motion guide rail 2.
As shown in Figure 1, described press box 5 is provided with counter sink, described counter sink is for holding described fastening bolt.
As shown in Figure 1, described oil pocket 3 top offers oil inlet passage 14, and described oil feeding device 1 is communicated with described oil inlet passage 14, and described oil inlet passage 14 is communicated with described oil pocket 3.
As shown in Figure 1, described oil feeding device 1 comprises oil pump 11, fixed restriction device 12 and overflow valve 13, and described oil pump 11, fixed restrictive valve are communicated with in turn with oil inlet passage 14, and described overflow valve 13 is arranged on the branch road of oil pump 11.
As shown in Figure 1, the oil pump 11 of hydrostatic slideway is the hydraulic oil of ps to oil supply system output pressure, after fixed restrictive valve throttling, pressure is that the hydraulic oil of p1 inputs to in hydrostatic slideway oil pocket 3, after hydraulic oil flows through the bottom of elastic membrane and the gap hx of fixed guide 7, in gap, throttling action downforce becomes p2, and now the gap of guide rail is h0.When load acts on motion guide rail 2 or when load changes, motion guide rail 2, fastening bolt, elastic membrane, the entirety that press box 5 is formed moves down, the gap h0 of guide rail diminishes, in hydrostatic slideway gap, the pressure p 2 of hydraulic oil becomes large, act in elastic membrane, elastic membrane becomes greatly with the gap hx fixedly leading 7, and now the throttling liquid resistive in gap is little, the pressure p 2 of lower floor's oil pocket 3 fluid continues to increase, act on above-mentioned entirety to make it to move upward, finally make the gap of hydrostatic slideway revert to h0, namely reach the design object that oil film thickness is constant.
Couple together again after all part processing of the embodiment of the present invention, parts can be changed quickly and easily; Hydrostatic slideway in the present invention according to the change of load, can change the gap of elastic membrane bottom and fixed guide 7, carries out feedback regulation, increase the oil film rigidity of hydrostatic slideway to pressure; The oil pocket 3 being directly installed on hydrostatic slideway due to elastic membrane is inner, and therefore can make a response according to the change of load quickly and accurately in the gap of elastic membrane, can recover original oil film thickness as quick as thought.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a hydrostatic slideway, it is characterized in that, comprise oil feeding device, motion guide rail, elasticity reducing-flow structure and fixed guide, described motion guide rail upwards offers oil pocket by bottom, described oil feeding device is communicated with described oil pocket top, described elasticity reducing-flow structure one end is fixedly connected with oil pocket, the other end is free end, described fixed guide is positioned at below described motion guide rail, oil successively through the gap described free end and oil pocket, gap between described free end and fixed guide, and forms oil lamella between fixed guide and motion guide rail.
2. hydrostatic slideway as claimed in claim 1, it is characterized in that, described elasticity reducing-flow structure comprises two pieces of elastic membranes, two pieces of elastic membranes are horizontally set with in described oil pocket, and two pieces of elastic membranes are positioned at same plane, two pieces of elastic membranes mutually away from two ends be fixedly connected with oil pocket respectively, two ends close to each other are free end, oil successively through the gap two free ends, gap between each free end and fixed guide, and forms oil lamella between fixed guide and motion guide rail.
3. hydrostatic slideway as claimed in claim 2, it is characterized in that, described hydrostatic slideway also comprises press box, and two pieces of elastic membranes are fitted on described oil pocket bottom face, and described press box is pressed together on the lower surface of two pieces of elastic membranes, and described press box is used for fixing two pieces of elastic membranes.
4. hydrostatic slideway as claimed in claim 3, it is characterized in that, described elastic membrane is spring steel plate.
5. hydrostatic slideway as claimed in claim 3, it is characterized in that, described hydrostatic slideway also comprises fixture, and described fixture successively through press box, elastic membrane, and is fixedly connected with the bottom face of oil pocket.
6. hydrostatic slideway as claimed in claim 5, it is characterized in that, described fixture is fastening bolt.
7. hydrostatic slideway as claimed in claim 6, it is characterized in that, described press box is provided with counter sink, described counter sink is for holding described fastening bolt.
8. the hydrostatic slideway as described in any one of claim 1-7, is characterized in that, described oil pocket top offers oil inlet passage, and described oil feeding device is communicated with described oil inlet passage, and described oil inlet passage is communicated with described oil pocket.
9. hydrostatic slideway as claimed in claim 8, it is characterized in that, described oil feeding device comprises oil pump, fixed restriction device and overflow valve, and described oil pump, fixed restrictive valve are communicated with in turn with oil inlet passage, and described overflow valve is arranged on the branch road of oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522434.2A CN105108498B (en) | 2015-08-24 | 2015-08-24 | A kind of hydrostatic slideway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522434.2A CN105108498B (en) | 2015-08-24 | 2015-08-24 | A kind of hydrostatic slideway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105108498A true CN105108498A (en) | 2015-12-02 |
| CN105108498B CN105108498B (en) | 2017-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510522434.2A Expired - Fee Related CN105108498B (en) | 2015-08-24 | 2015-08-24 | A kind of hydrostatic slideway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105108498B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745296A (en) * | 2017-11-16 | 2018-03-02 | 福建达宇重型数控机床有限公司 | High-accuracy centreless grinding negative pressure guide rail |
| CN110202392A (en) * | 2019-06-27 | 2019-09-06 | 江苏大卫精工科技有限公司 | A kind of turntable hydrostatic slideway etc. oil masses oil supply mechanism and its method |
| CN112096742A (en) * | 2020-10-09 | 2020-12-18 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585525A (en) * | 1981-06-30 | 1983-01-12 | Matsushita Electric Ind Co Ltd | Static pressure fluid slide apparatus |
| CN101280804A (en) * | 2008-05-09 | 2008-10-08 | 潘旭华 | Static pressure guiding rail with adjustable film thickness and regulating method thereof |
| CN101596976A (en) * | 2009-07-10 | 2009-12-09 | 西安工业大学 | High rigidity air hydrostatic guideway air float cushion |
| CN204470986U (en) * | 2015-02-13 | 2015-07-15 | 湖北工业大学 | A kind of damping hydrostatic slideway |
| CN204921699U (en) * | 2015-08-24 | 2015-12-30 | 湖南长河机械有限公司 | Built -in film formula hydrostatic guideway |
-
2015
- 2015-08-24 CN CN201510522434.2A patent/CN105108498B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585525A (en) * | 1981-06-30 | 1983-01-12 | Matsushita Electric Ind Co Ltd | Static pressure fluid slide apparatus |
| CN101280804A (en) * | 2008-05-09 | 2008-10-08 | 潘旭华 | Static pressure guiding rail with adjustable film thickness and regulating method thereof |
| CN101596976A (en) * | 2009-07-10 | 2009-12-09 | 西安工业大学 | High rigidity air hydrostatic guideway air float cushion |
| CN204470986U (en) * | 2015-02-13 | 2015-07-15 | 湖北工业大学 | A kind of damping hydrostatic slideway |
| CN204921699U (en) * | 2015-08-24 | 2015-12-30 | 湖南长河机械有限公司 | Built -in film formula hydrostatic guideway |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745296A (en) * | 2017-11-16 | 2018-03-02 | 福建达宇重型数控机床有限公司 | High-accuracy centreless grinding negative pressure guide rail |
| CN110202392A (en) * | 2019-06-27 | 2019-09-06 | 江苏大卫精工科技有限公司 | A kind of turntable hydrostatic slideway etc. oil masses oil supply mechanism and its method |
| CN112096742A (en) * | 2020-10-09 | 2020-12-18 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
| CN112096742B (en) * | 2020-10-09 | 2021-11-05 | 华中科技大学 | Hydrostatic bearing and hydrostatic guide rail assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105108498B (en) | 2017-06-20 |
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Granted publication date: 20170620 Termination date: 20210824 |