CN105116924B - A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means - Google Patents
A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means Download PDFInfo
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- CN105116924B CN105116924B CN201510432227.8A CN201510432227A CN105116924B CN 105116924 B CN105116924 B CN 105116924B CN 201510432227 A CN201510432227 A CN 201510432227A CN 105116924 B CN105116924 B CN 105116924B
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- Prior art keywords
- electric pushrod
- aluminium sheet
- micropore aluminium
- leading screw
- push rod
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Abstract
A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means, the device include lower support structure, upper support structure；Target micropore aluminium sheet is spherical structure, and target micropore aluminium sheet is placed between lower support structure, top electric pushrod；The output shaft of stepper motor is connected with planetary reduction gear, and planetary reduction gear is connected with leading screw, and the junction of leading screw and planetary reduction gear is provided with angular contact bearing, to support leading screw；Feed screw nut is coordinated by screw thread to be connected with leading screw；The outside of leading screw and feed screw nut is provided with push rod shell；By two groups of fixed blocks and optical axis guide rail axially engage and two groups of linear displacement transducers ensure the kinematic accuracies of push rods and sphere auxiliary structure；Sphere auxiliary structure is fixedly connected with customization Rubber end by Rubber end fixed structure；The size of curvature can be changed using control system, substantially reduce the cost for molding and bringing in the past, and it is efficiency high, easy to operate；Improve the indisposed sense problem of picture and reduce difficulty of construction.
Description
Technical field
The present invention relates to a kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means, belong to thin plate mechanics field.
Background technology
Space theatre is for showing the astronomical education and entertainment program relevant with the night sky, or the field for celestial navigation training
Shop.Huge dome projection screen is mainly characterized by, fixed star, planet and other celestial bodies can be presented above, can also
Perform and simulate the phenomenon of their motions complicated on celestial sphere and movement.By the exploration of many decades, it has been found that with equal
What the aluminium sheet of even aperture (install sound arrester thereafter, reduce the reflected sound from ball curtain, reach more preferable sound effect) was spliced
Ball curtain best results.Micropore aluminium sheet splicing ball curtain has possessed the technology of maturation and extensive market.Large-scale ball curtain electricity both at home and abroad
Movie theatre, space theatre etc. all use micropore aluminium sheet splicing ball curtain.Such as Beijing China Science and Technology Hall vault curtain movie theater, Beijing Planetarium ball curtain
Three-dimensional universe arenas.
Every block of micropore aluminium sheet in ball curtain should be the consistent sphere of curvature in theory, so could ideally be spliced into
The ball curtain of wanted intended diameter.The ball curtain that foreign well-known enterprise Spize companies are provided is formed by the rolling of wooden spherical mould.
This is also the technique of domestic and international large-scale ball curtain manufacturer's main flow.The overall integrality of ball curtain and good vision can so be ensured
Effect.But such production technology cost is high.Client is typically all special according to oneself building to the size of ball curtain diameter
Customization, caused problem is the reusability of mould.The ball curtain of diameter needed for customization customer, just means once
Die sinking, price is naturally expensive, and just there are such purchasing power in the only large-scale planetarium in the country, science and technology center.In order to cater to low cost
Ball curtain market, the way of domestic most enterprise is that the direct micropore aluminium sheet for making plane is spliced.Although so doing reduces
Cost, but what is brought is that this problem is medium and small straight due to the indisposed sense of picture caused by plain splice during program broadcasts
It is especially prominent in the ball curtain of footpath.
The content of the invention
For existing micropore aluminium sheet processing cost and caused visual effect problem, it is an object of the invention to provide
A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means, the effect that the device passes through stepper motor arrangement and control system are realized
A certain degree of sphere precorrection is carried out to micropore aluminium sheet.
To achieve the above object, the technical solution adopted by the present invention fills for a kind of multi-curvature ball curtain micropore aluminium sheet precorrection
Put, the device includes lower support structure 1, upper support structure 4, lower section electric pushrod 2, top electric pushrod 5；Target micropore aluminium is thin
Plate 3 is planar structure, between 3 electric pushrod 2 placed below of target micropore aluminium sheet, top electric pushrod 5.
In lower section electric pushrod 2, the loading procedure of top electric pushrod 5, target micropore aluminium sheet 3 is set to be entered from plane to sphere
Row plastic deformation.
Lower section electric pushrod 2 is arranged on lower support structure 1, and top electric pushrod 5 is arranged on upper support structure 4；Under
Square electric pushrod 2, top electric pushrod 5 form by each electric pushrod；Before being loaded to target micropore aluminium sheet 3, lower section electricity
Each electric pushrod of dynamic push rod 2 forms the concave ball surfaces structure of correction curvature needed for target micropore aluminium sheet 3, top electric pushrod
5 each electric pushrod forms the convex spherical structure of correction curvature needed for target micropore aluminium sheet 3.
The electric pushrod include customization Rubber end 6, Rubber end fixed structure 7, sphere auxiliary structure 8, push rod 9, outside push rod
Shell 10, optical axis guide rail 11, linear displacement transducer 12, planetary reduction gear 13, stepper motor 14, graphite lubrication copper bush 15, silk
Thick stick 16, feed screw nut 17, angular contact bearing 18.
The output shaft of stepper motor 14 is connected with planetary reduction gear 13, and planetary reduction gear 13 is connected with leading screw 16, leading screw 16
Angular contact bearing 18 is provided with the junction of planetary reduction gear 13, to support leading screw 16；Feed screw nut 17 is coordinated by screw thread
It is connected with leading screw 16；The outside of leading screw 16 and feed screw nut 17 is provided with push rod shell 10.
Feed screw nut 17 is connected with push rod 9, and the end of push rod 9 is connected with sphere auxiliary structure 8；The outside week of push rod shell 10
It is connected to provided with two groups of symmetrical fixed blocks, each fixed block by optical axis guide rail 11 with sphere auxiliary structure 8；The fixed block and light
Graphite lubrication copper bush 15 is provided between axis rail 11；The exterior circumferential of push rod shell 10 is provided with a linear displacement transducer 12.
By two groups of fixed blocks and optical axis guide rail 11 axially engage and linear displacement transducer 12 ensures push rod 9 and ball
The kinematic accuracy of face auxiliary structure 8；Sphere auxiliary structure 8 is fixedly connected with customization Rubber end 6 by Rubber end fixed structure 7；It is described
The surface of customization Rubber end 6 of lower section electric pushrod 2 is planar structure；The surface of customization Rubber end 6 of the top electric pushrod 5 is
Spherical structure；By customizing the planar structure on the surface of Rubber end 6, spherical structure is arranged, can be effectively reduced micro- in loading procedure
The small local inhomogeneous deformation on the surface of hole aluminium sheet 3, to improve correction accuracy.
Compared with prior art, the present invention has the advantages that.
1st, the present invention uses control system to change the size of curvature and realizes that multi-curvature is freely adjusted, and substantially reduces existing skill
The cost that the die sinking used in art is brought, and it is efficiency high, easy to operate.
2nd, the present invention improves the indisposed sense of picture to a certain extent compared with the conventional microporous aluminium sheet plain splice of low cost
Problem and reduce difficulty of construction.
Brief description of the drawings
Fig. 1 is the system structure diagram of the present invention.
Fig. 2 is the key component structure chart of the present invention.
Fig. 3 is the key component sectional structure chart of the present invention.
In figure：1st, lower support structure, 2, lower section electric pushrod, 3, target micropore aluminium sheet 4, upper support structure, 5, top
Electric pushrod, 6, customization Rubber end, 7, Rubber end fixed structure, 8, sphere auxiliary structure, 9, push rod, 10, push rod shell, 11, light
Axis rail, 12, linear displacement transducer, 13, planetary reduction gear, 14, stepper motor, 15, graphite lubrication copper bush, 16, leading screw,
17th, feed screw nut, 18, angular contact bearing.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As Figure 1-3, the present invention is divided into two parts up and down, and its composition is roughly the same, lower support structure 4, upper support machine
Respectively 100 electric pushrods of installation, and relative up and down in structure 1.In a particular embodiment, input needs the diameter of the ball curtain corrected,
The vertical height that control system can move according to needed for input calculates up and down totally 200 electric pushrods respectively (is being relatively large in diameter
When, select directly to form spherical arc by electric pushrod；When diameter is smaller, selection forms taper cambered surface, avoids obvious office
Portion deforms).Feedback is carried out to the height walked by the linear displacement transducer 12 on each electric pushrod and forms closed-loop control,
Strict tolerances.After each electric pushrod execution, trickle convex, concavity are respectively formed up and down.Precorrection will be carried out
Micropore thin aluminum sheet 3 is disposed below on device.Then certain altitude pair is slowly dropped to by device above control system
Thin plate corrects, and after certain time, rises top device, takes out thin plate, complete.Control system gives tacit consent to a precorrection, can be set
To be multiple, progressive deformation is carried out to thin plate, step is identical.
Fig. 2 is the electric pushrod device of the present invention, and part includes customization Rubber end 6, Rubber end fixed structure 7, ball
Face auxiliary structure 8, push rod 9, push rod shell 10, optical axis guide rail 11, linear displacement transducer 12, planetary reduction gear 13, stepper motor
14, graphite lubrication copper bush 15, leading screw 16, feed screw nut 17, angular contact bearing 18.Wherein, leading screw 16 and feed screw nut 17 adopt
With threaded connection；Customization Rubber end 6 is connected with sphere auxiliary structure 8 using spherical pair；Optical axis guide rail 11 and graphite lubrication copper bush
15 are slidably connected using guide rail；Planetary reduction gear 13 and leading screw 16 adopt key connection.According to system-computed result , Walk during specific implementation
Stepper motor 14 drives leading screw 16 to rotate via planetary reduction gear 13, and the vertical high 17 drive push rod 9 of feed screw nut, which is moved to, specifies directly
Displacement of the lines, so that customization Rubber end 6 reaches specified altitude assignment, the process is by the feedback control of linear displacement transducer 12.
Claims (2)
- A kind of 1. multi-curvature ball curtain micropore aluminium sheet pre-correction means, it is characterised in that：The device include lower support structure (1), on Supporting construction (4), lower section electric pushrod (2), top electric pushrod (5)；Target micropore aluminium sheet (3) is planar structure, target Between micropore aluminium sheet (3) electric pushrod placed below (2), top electric pushrod (5)；In lower section electric pushrod (2), top electric pushrod (5) loading procedure, make target micropore aluminium sheet (3) from plane to sphere Carry out plastic deformation；Lower section electric pushrod (2) is arranged on lower support structure (1), and top electric pushrod (5) is arranged on upper support structure (4) On；Lower section electric pushrod (2), top electric pushrod (5) form by each electric pushrod；Target micropore aluminium sheet (3) is loaded Before, each electric pushrod of lower section electric pushrod (2) forms the concave ball surfaces knot of correction curvature needed for target micropore aluminium sheet (3) Structure, each electric pushrod of top electric pushrod (5) form the convex spherical knot of correction curvature needed for target micropore aluminium sheet (3) Structure；The electric pushrod includes customization Rubber end (6), Rubber end fixed structure (7), sphere auxiliary structure (8), push rod (9), pushed away Bar shell (10), optical axis guide rail (11), linear displacement transducer (12), planetary reduction gear (13), stepper motor (14), graphite profit Sliding copper bush (15), leading screw (16), feed screw nut (17), angular contact bearing (18)；The output shaft of stepper motor (14) is connected with planetary reduction gear (13), and planetary reduction gear (13) is connected with leading screw (16), silk The junction of thick stick (16) and planetary reduction gear (13) is provided with angular contact bearing (18), to support leading screw (16)；Feed screw nut (17) coordinated by screw thread and be connected with leading screw (16)；The outside of leading screw (16) and feed screw nut (17) is provided with push rod shell (10)；Feed screw nut (17) is connected with push rod (9), and the end of push rod (9) is connected with sphere auxiliary structure (8)；Push rod shell (10) Exterior circumferential is provided with two groups of symmetrical fixed blocks, and each fixed block is connected by optical axis guide rail (11) with sphere auxiliary structure (8)；It is described Graphite lubrication copper bush (15) is provided between fixed block and optical axis guide rail (11)；The exterior circumferential of push rod shell (10) is provided with always Linear movement pick-up (12).
- A kind of 2. multi-curvature ball curtain micropore aluminium sheet pre-correction means according to claim 1, it is characterised in that：Pass through two groups Fixed block and optical axis guide rail (11) axially engage and linear displacement transducer (12) ensures push rod (9) and sphere auxiliary structure (8) kinematic accuracy；Sphere auxiliary structure (8) is fixedly connected with customization Rubber end (6) by Rubber end fixed structure (7)；It is described Customization Rubber end (6) surface of lower section electric pushrod (2) is planar structure；The customization Rubber end of the top electric pushrod (5) (6) surface is spherical structure；By customizing the planar structure on Rubber end (6) surface, spherical structure is arranged, can be effectively reduced and added The small local inhomogeneous deformation on target micropore aluminium sheet (3) surface during load, to improve correction accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510432227.8A CN105116924B (en) | 2015-07-21 | 2015-07-21 | A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510432227.8A CN105116924B (en) | 2015-07-21 | 2015-07-21 | A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means |
Publications (2)
| Publication Number | Publication Date |
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| CN105116924A CN105116924A (en) | 2015-12-02 |
| CN105116924B true CN105116924B (en) | 2018-02-02 |
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| CN201510432227.8A Expired - Fee Related CN105116924B (en) | 2015-07-21 | 2015-07-21 | A kind of multi-curvature ball curtain micropore aluminium sheet pre-correction means |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613739B1 (en) * | 1993-01-29 | 1996-12-04 | Kinugawa Rubber Ind. Co., Ltd. | Bending processing method and apparatus therefor |
| US6520038B1 (en) * | 1998-10-26 | 2003-02-18 | Mannesmann Vdo Ag | Drive device, for a movable part, in particular a hinged side window of a vehicle |
| CN101560802A (en) * | 2009-05-22 | 2009-10-21 | 上海江河幕墙系统工程有限公司 | Elastic forming method for panel of curtain wall and curved-surface building curtain wall |
| CN102284589A (en) * | 2011-07-26 | 2011-12-21 | 中南大学 | Metal creep forming die |
| CN102535844A (en) * | 2012-02-10 | 2012-07-04 | 中国建筑第八工程局有限公司 | Construction method for spherical curved surface stainless steel curtain wall |
-
2015
- 2015-07-21 CN CN201510432227.8A patent/CN105116924B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613739B1 (en) * | 1993-01-29 | 1996-12-04 | Kinugawa Rubber Ind. Co., Ltd. | Bending processing method and apparatus therefor |
| US6520038B1 (en) * | 1998-10-26 | 2003-02-18 | Mannesmann Vdo Ag | Drive device, for a movable part, in particular a hinged side window of a vehicle |
| CN101560802A (en) * | 2009-05-22 | 2009-10-21 | 上海江河幕墙系统工程有限公司 | Elastic forming method for panel of curtain wall and curved-surface building curtain wall |
| CN102284589A (en) * | 2011-07-26 | 2011-12-21 | 中南大学 | Metal creep forming die |
| CN102535844A (en) * | 2012-02-10 | 2012-07-04 | 中国建筑第八工程局有限公司 | Construction method for spherical curved surface stainless steel curtain wall |
Non-Patent Citations (1)
| Title |
|---|
| 多点成形中的快速调形与成形过程自动化研究;隋振;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20041215(第4期);参见论文第2章第15-17、24-27页，第3章第29-43、61页，第4章第65-66页 * |
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| Publication number | Publication date |
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| CN105116924A (en) | 2015-12-02 |
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