CN203409520U - Hydrostatic seal structure on lower surface of high-precision vertical worktable - Google Patents
Hydrostatic seal structure on lower surface of high-precision vertical worktable Download PDFInfo
- Publication number
- CN203409520U CN203409520U CN201320437334.6U CN201320437334U CN203409520U CN 203409520 U CN203409520 U CN 203409520U CN 201320437334 U CN201320437334 U CN 201320437334U CN 203409520 U CN203409520 U CN 203409520U
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- Prior art keywords
- driven pulley
- static
- workbench
- pressure
- fan
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- Withdrawn - After Issue
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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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
- B23Q1/522—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair which is perpendicular to the working surface
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a hydrostatic seal structure on a lower surface of a high-precision vertical worktable. The lower surface of a worktable (1) and an upper surface of a driven wheel (3) are in a seam allowance fit structure; the seam allowance is circular and is coaxial with the worktable, and the diameter of the seam allowance is larger than an outer diameter of a pressure ring (9). By adoption of the technical scheme, the worktable forms high-rigidity high-tilting moment resistance closed hydrostatic bearing under the actions of the upper, lower and radial hydrostatic bearing force. Moreover, because the driven wheel moves under bearing of a high-pressure oil film in the axial and radial directions, the hydrostatic seal structure has the advantages of high rotation precision, high rigidity, high vibration resistance, high tilting moment resistance, simple structure and small starting torque.
Description
Technical field
The utility model belongs to the technical field of mechanical production devices, relates to the workbench structure of big machinery machining tool.More particularly, the utility model relates to high-precision vertical workbench lower surface hydrostatic seal structure.
Background technology
High-precision vertical workbench of the prior art, mostly adopt plane thrust bearing and radial roller bearing to support, its rotating accuracy is subject to the restriction of rolling bearing, be difficult to breakthrough raising, its precision order of magnitude is mostly at a few percent grade, and its absorbing poor performance, can not adapt to the processing of modern high-precision part, particularly the large-scale high-precision parts to industries such as Aeronautics and Astronautics, wind-powered electricity generations, more cannot meet its required precision.
Utility model content
The utility model provides high-precision vertical workbench lower surface hydrostatic seal structure, its objective is the supporting precision that improves workbench.
To achieve these goals, the technical scheme that the utility model is taked is:
The high-precision vertical workbench that the utility model provides, comprise base, be arranged on the workbench on base, driving wheel and the driven pulley of external toothing mutually, described driven pulley is located at the below of described workbench, and described driven pulley is coaxially fixedly connected with described workbench;
Described base is provided with the circular bosses raising up, and described driven pulley is set with on described circular bosses by circular hole, and forms matched in clearance; Between the surface that described circular bosses coordinates with described driven pulley, be provided with circumference static-pressure oil chamber.
Shallow annular groove is set on the outer round surface of described circular bosses, and the bore area of described shallow annular groove and driven pulley forms described circumference static-pressure oil chamber; Described base is provided with oil duct, and described circumference static-pressure oil chamber is communicated with workbench hydraulic system.
Dome external diameter and driven pulley endoporus leave certain interval, by design, get gap width.
On the shoulder horizontal plane of the base at described circular bosses place, establish fan-shaped static pressure back-up block; The lower surface of described driven pulley contacts with described fan-shaped static pressure back-up block; Between the lower surface of described driven pulley and fan-shaped static pressure back-up block one side upward, be provided with static thrust pumping cavity.
Described fan-shaped static pressure back-up block one side is upward provided with fan-shaped shallow grooves, and the lower surface of described fan-shaped shallow grooves and described driven pulley forms described static thrust pumping cavity; Described base and described fan-shaped static pressure back-up block are provided with oil duct, and described circumference static-pressure oil chamber is communicated with workbench hydraulic system.
Fan-shaped static pressure back-up block matched in clearance on shoulder face on the lower surface of described driven pulley and described base, gets gap width by design.
The upper surface of described circular bosses is provided with pressure rings, and described pressure rings and circular bosses are fastenedly connected; The external diameter of described pressure rings is greater than described circular bosses;
The upper and lower end face of described driven pulley, with lower surface and the fan-shaped static pressure back-up block one side upward of described pressure rings, forms matched in clearance;
Between described pressure rings and described driven pulley matching surface, be provided with and press down static-pressure oil chamber.
Driven pulley upper surface forms matched in clearance with the pressure rings lower surface being screwed in base upper surface, by design, gets gap width,
Described pressure rings one side down, is provided with circular-arc shallow grooves; Described circular-arc shallow grooves and the upper surface of driven pulley form the described static-pressure oil chamber that presses down; Described base and described pressure rings are provided with oil duct, press down static-pressure oil chamber and be communicated with workbench hydraulic system described in inciting somebody to action.
The end face of described base is provided with raising up of annular, and the raising up of described annular is radially greater than the external diameter of fan-shaped hydrostatic support piece coaxial; The lower surface of described driven pulley is provided with the groove that matches with this convex shape; Described projection and groove form hermetically-sealed construction.
The upper surface of the lower surface of described workbench and described driven pulley adopts seam fit structure; Described seam is annular, and coaxial and diameter is greater than the external diameter of described pressure rings to this seam with workbench.
Described workbench hydraulic system provides the pressure oil of constant flow.
The utility model adopts technique scheme, and workbench has formed the closed type static pressure supporting of high rigidity, high resistance heeling moment under effect upper and lower and radially hydrostatic support power; Because driven pulley is axially, radially all move under the supporting in high pressure oil film, there is high, the high rigidity of rotating accuracy, high vibration resistance, anti-heeling moment is strong, simple in structure and staring torque is little; Fan-shaped hydrostatic support piece adopts sector structure, on an anchor ring, a plurality of secter pats can be installed, and forms heavy wool chamber and supports, and has greatly improved the ability of the anti-disturbing moment of hydrostatic support, has reduced difficulty of processing simultaneously; Pressure rings is opened static-pressure oil chamber on annulus, has facilitated installation and the gap adjustment of closed hydrostatic slideway; The utility model is specially adapted to vertical working main shaft and the rotary table of high-precision vertical lathe, vertical grinder and gear hobbing gear grinding machines, and its precision order of magnitude, within some thousandths of millimeter, can meet the needs of the industry developments such as Aeronautics and Astronautics, wind-powered electricity generation.
Accompanying drawing explanation
The utility model comprises the following drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the fan-shaped hydrostatic support block structure schematic diagram in the utility model;
Fig. 3 is the pressure rings structural representation in the utility model;
Fig. 4 is circumference static-pressure oil chamber in the utility model and the oil circuit schematic diagram of static thrust pumping cavity;
Fig. 5 is the oil circuit schematic diagram that presses down static-pressure oil chamber in the utility model.
In figure, be labeled as:
1, workbench, 2, high-strength screw, 3, driven pulley, 4, driving wheel, 5, base, 6, circumference static-pressure oil chamber, 7, fan-shaped hydrostatic support piece, 8, static thrust pumping cavity, 9, pressure rings, 10, press down static-pressure oil chamber, 11, circular bosses.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present utility model is described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present utility model, technical scheme.
Structure of the present utility model as expressed in Fig. 1 is a kind of high precision constant current enclosed pitot-static pressure vertical working platform lower surface hydrostatic seal structure.Described vertical working platform comprises base 5, is arranged on the workbench 1 on base 5, driving wheel 4 and the driven pulley 3 of external toothing mutually, and described driven pulley 3 is located at the below of described workbench 1, and described driven pulley 3 is coaxially fixedly connected with described workbench 1.
Workbench 1 adopts high-strength screw 2 and driven pulley 3 to be fastenedly connected at its lower surface, by intermeshing driving wheel 4, drives its rotation, the main motion of the platform 1 of finishing the work, and clamping workpiece on workbench, realizes the machining to workpiece.
In order to solve the problem of prior art existence and to overcome its defect, realize the goal of the invention of the supporting precision that improves workbench, the technical scheme that the utility model is taked is:
As shown in Figure 1:
High-precision vertical workbench of the present utility model, its base 5 is provided with the circular bosses 11 raising up, and described driven pulley 3 is set with on described circular bosses 11 by circular hole, and forms matched in clearance; Between the surface that described circular bosses 11 coordinates with described driven pulley 3, be provided with circumference static-pressure oil chamber 6.
As shown in Figure 4, shallow annular groove is set on the outer round surface of described circular bosses 11, the bore area of described shallow annular groove and driven pulley 3 forms described circumference static-pressure oil chamber 6; Described base 5 is provided with oil duct, and described circumference static-pressure oil chamber 6 is communicated with workbench hydraulic system.
The pressure oil of the constant flow providing when workbench hydraulic system is by the fuel feed hole of base 5 bottom surfaces, while entering circumference static-pressure oil chamber 6, just formed one deck high pressure oil film, by the effect of pressure oil, driven pulley 3 is suspended diametrically, formed high-intensity radially hydrostatic support.
As shown in Figure 2:
On the shoulder horizontal plane of the base 5 at described circular bosses 11 places, establish fan-shaped static pressure back-up block 7; The lower surface of described driven pulley 3 contacts with described fan-shaped static pressure back-up block 7; Between the lower surface of described driven pulley 3 and fan-shaped static pressure back-up block 7 one side upward, be provided with static thrust pumping cavity 8.
As shown in Figure 4, described fan-shaped static pressure back-up block 7 one side is upward provided with fan-shaped shallow grooves, and the lower surface of described fan-shaped shallow grooves and described driven pulley 3 forms described static thrust pumping cavity 8; Described base 5 and described fan-shaped static pressure back-up block 7 are provided with oil duct, and described circumference static-pressure oil chamber 6 is communicated with workbench hydraulic system.
Fan-shaped static pressure back-up block 7 matched in clearance on shoulder face on the lower surface of described driven pulley 3 and described base 5, get gap width by design.
When the pressure oil of the constant flow that workbench hydraulic system the provides fuel feed hole by base 5 enters the static thrust pumping cavity 8 on fan-shaped static pressure back-up block 7, under the effect of pressure oil, driven pulley 3 upwards suspends, and forms high strength axial thrust hydrostatic support.
Fan-shaped static pressure back-up block 7 adopts sector structure, on an anchor ring, a plurality of secter pats can be installed, and forms heavy wool chamber and supports, and has greatly improved the ability of the anti-disturbing moment of hydrostatic support, simplifies simultaneously and facilitate its processing technology, reduces difficulty of processing.
As shown in Figure 3:
The upper surface of described circular bosses 11 is provided with pressure rings 9, and described pressure rings 9 is fastenedly connected with circular bosses 11; The external diameter of described pressure rings 9 is greater than described circular bosses 11;
The upper and lower end face of described driven pulley 3, with lower surface and fan-shaped static pressure back-up block 7 one side upward of described pressure rings 9, forms matched in clearance;
Between described pressure rings 9 and described driven pulley 3 matching surfaces, be provided with and press down static-pressure oil chamber 10.
As shown in Figure 5, described pressure rings 9 one side down, is provided with circular-arc shallow grooves; Described circular-arc shallow grooves and the upper surface of driven pulley 3 form the described static-pressure oil chamber 10 that presses down; Described base 5 and described pressure rings 9 are provided with oil duct, press down static-pressure oil chamber 10 and be communicated with workbench hydraulic system described in inciting somebody to action.
The upper surface of driven pulley 3 forms matched in clearance with the lower surface that is screwed the pressure rings 9 on base 5 upper surfaces, and gets gap width by design.
By pressing down static-pressure oil chamber 10, be arranged in the pressure rings 9 of annular, facilitated installation and the gap adjustment of closed hydrostatic slideway.
The pressure oil of the constant flow providing when workbench hydraulic system is by fuel feed hole, enter in pressure rings 9 press down static-pressure oil chamber 10 time, due to the effect of pressure oil, driven pulley 3 has been subject to the static pressure support force pressing down, and forms the hydrostatic support that high strength axially presses down.
In sum, work spindle and the workbench of the vertical machine that the above-mentioned constant current enclosed pitot-static pressure that the utility model provides supports, be specially adapted to high rotating accuracy, high vibration resistance, anti-heeling moment is strong, staring torque is little, and simple in structure high-precision vertical lathe, vertical grinder and gear hobbing, working-spindle and the rotary table of grinding machine bed.Its precision order of magnitude, within some thousandths of millimeter, can meet the needs of the industry developments such as Aeronautics and Astronautics, wind-powered electricity generation.
The inner hole sleeve of driven pulley 3, on the oil pocket dome of base 5, forms the radially matched in clearance of hydrostatic bearing; The lower surface of driven pulley 3 and base 5 dome circular bead surface oil pocket fan pieces form the matched in clearance of axial thrust hydrostatic support; The upper surface of driven pulley 3 and the matched in clearance that is fixed in the oil pocket pressure rings formation axial thrust hydrostatic support of base 5 dome upper surfaces.
Now, the upper and lower end face of driven pulley 3 and endoporus are all in hydrostatic support, and it has formed high rigidity under effect upper and lower and radially hydrostatic support power, the enclosed pitot-static pressure supporting of high resistance heeling moment.Because driven pulley 3 is all to turn round under the bearing state in high pressure oil film at axial-radial, had advantages of that the high vibration resistance of high rigidity and the little rotating accuracy of staring torque are high, be specially adapted to high accuracy, to resistance to shock and anti-heeling moment, require high grinding machine, lathe, gear-hobbing machine to use.
As shown in Figure 1:
The end face of described base 5 is provided with raising up of annular, and the raising up of described annular is radially greater than the external diameter of fan-shaped hydrostatic support piece 7 coaxial; The lower surface of described driven pulley 3 is provided with the groove that matches with this convex shape; Described projection and groove form hermetically-sealed construction.
Said structure, guarantees, from the pressure oil of fan-shaped hydrostatic support piece 7 and 6 leakages of circumference static-pressure oil chamber, can not leak into job site from workbench.
As shown in Figure 1:
The upper surface of the lower surface of described workbench 1 and described driven pulley 3 adopts seam fit structure; Described seam is annular, and coaxial and diameter is greater than the external diameter of described pressure rings 9 to this seam with workbench.
Said structure, guarantees, from pressing down the pressure oil of static-pressure oil chamber 10 and 6 leakages of circumference static-pressure oil chamber, can not leak into job site from workbench.
Because the utility model has only formed a set of rotary table by five large parts, take full advantage of the advanced feature of static pressure technology, greatly simplify the structure and assembly technology.Its concrete matching requirements are as follows:
1, on the shoulder face of base 5, load onto fan-shaped static pressure back-up block 7, and with after screw fastening, repair the upper surface of scraping fan-shaped static pressure back-up block 7, guarantee that its flatness error is less than 0.01mm;
2, driven pulley 3 is enclosed within on the circular bosses 11 of base 5, and makes its lower surface and the 7 upper surface laminatings of fan-shaped static pressure back-up block, measures the upper surface of driven pulley 3 and the distance of base 5 end faces, makes it equal the static pressure oil clearance of twice; If undesirable, end face that can scraping base 5, until qualified;
3, workbench 1 is installed in the seam of driven pulley 3, and be fastenedly connected with high-strength screw 2 and driven pulley 3, completed the assembling of static pressure rotary worktable;
4, a whole set of rotary table assembling is put on the lathe bed of lathe, itself and driving wheel 4 is meshed, and by bolted, load onto static pressure oil circuit, can come into operation.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (3)
1. high-precision vertical workbench lower surface hydrostatic seal structure, described vertical working platform comprises base (5), is arranged on the workbench (1) on base (5), driving wheel (4) and the driven pulley (3) of external toothing mutually, described driven pulley (3) is located at the below of described workbench (1), and described driven pulley (3) is coaxially fixedly connected with described workbench (1);
It is characterized in that:
Described base (5) is provided with the circular bosses (11) raising up, and it is upper that described driven pulley (3) is set with described circular bosses (11) by circular hole, and form matched in clearance;
Between the surface that described circular bosses (11) coordinates with described driven pulley (3), be provided with circumference static-pressure oil chamber (6);
On the outer round surface of described circular bosses (11), shallow annular groove is set, the bore area of described shallow annular groove and driven pulley (3) forms described circumference static-pressure oil chamber (6);
Described base (5) is provided with oil duct, and described circumference static-pressure oil chamber (6) is communicated with workbench hydraulic system;
On the shoulder horizontal plane of the base (5) at described circular bosses (11) place, establish fan-shaped static pressure back-up block (7);
The lower surface of described driven pulley (3) contacts with described fan-shaped static pressure back-up block (7);
Between the lower surface of described driven pulley (3) and fan-shaped static pressure back-up block (7) one side upward, be provided with static thrust pumping cavity (8);
Described fan-shaped static pressure back-up block (7) one side is upward provided with fan-shaped shallow grooves, and the lower surface of described fan-shaped shallow grooves and described driven pulley (3) forms described static thrust pumping cavity (8);
Described base (5) and described fan-shaped static pressure back-up block (7) are provided with oil duct, and described circumference static-pressure oil chamber (6) is communicated with workbench hydraulic system;
The upper surface of described circular bosses (11) is provided with pressure rings (9), and described pressure rings (9) is fastenedly connected with circular bosses (11);
The external diameter of described pressure rings (9) is greater than described circular bosses (11);
The upper and lower end face of described driven pulley (3), with lower surface and fan-shaped static pressure back-up block (7) one side upward of described pressure rings (9), forms matched in clearance;
Between described pressure rings (9) and described driven pulley (3) matching surface, be provided with and press down static-pressure oil chamber (10);
The upper surface of the lower surface of described workbench (1) and described driven pulley (3) adopts seam fit structure;
Described seam is annular, and coaxial and diameter is greater than the external diameter of described pressure rings (9) to this seam with workbench.
2. according to high-precision vertical workbench lower surface hydrostatic seal structure claimed in claim 1, it is characterized in that:
Described pressure rings (9) one side down, is provided with circular-arc shallow grooves;
The upper surface of described circular-arc shallow grooves and driven pulley (3) forms the described static-pressure oil chamber (10) that presses down;
Described base (5) and described pressure rings (9) are provided with oil duct, press down static-pressure oil chamber (10) and be communicated with workbench hydraulic system described in inciting somebody to action.
3. according to high-precision vertical workbench lower surface hydrostatic seal structure claimed in claim 2, it is characterized in that:
The end face of described base (5) is provided with raising up of annular, and the raising up of described annular is radially greater than the external diameter of fan-shaped hydrostatic support piece (7) coaxial;
The lower surface of described driven pulley (3) is provided with the groove that matches with this convex shape; Described projection and groove form hermetically-sealed construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437334.6U CN203409520U (en) | 2013-07-22 | 2013-07-22 | Hydrostatic seal structure on lower surface of high-precision vertical worktable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437334.6U CN203409520U (en) | 2013-07-22 | 2013-07-22 | Hydrostatic seal structure on lower surface of high-precision vertical worktable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203409520U true CN203409520U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320437334.6U Withdrawn - After Issue CN203409520U (en) | 2013-07-22 | 2013-07-22 | Hydrostatic seal structure on lower surface of high-precision vertical worktable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203409520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406771A (en) * | 2013-07-22 | 2013-11-27 | 芜湖陀曼精机科技有限公司 | Static-pressure sealing structure of lower surface of vertical high-precision working table |
| ITUB20151827A1 (en) * | 2015-07-02 | 2017-01-02 | Mario Carnaghi Spa | HYDROSTATIC ROTARY TABLE, PARTICULARLY FOR VERTICAL LATHES |
-
2013
- 2013-07-22 CN CN201320437334.6U patent/CN203409520U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406771A (en) * | 2013-07-22 | 2013-11-27 | 芜湖陀曼精机科技有限公司 | Static-pressure sealing structure of lower surface of vertical high-precision working table |
| CN103406771B (en) * | 2013-07-22 | 2015-05-27 | 芜湖陀曼精机科技有限公司 | Static-pressure sealing structure of lower surface of vertical high-precision working table |
| ITUB20151827A1 (en) * | 2015-07-02 | 2017-01-02 | Mario Carnaghi Spa | HYDROSTATIC ROTARY TABLE, PARTICULARLY FOR VERTICAL LATHES |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150527 |
|
| RGAV | Abandon patent right to avoid regrant |