CN202779356U - Multipoint die-less hydraulic bulging equipment - Google Patents

Multipoint die-less hydraulic bulging equipment Download PDF

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Publication number
CN202779356U
CN202779356U CN 201220340132 CN201220340132U CN202779356U CN 202779356 U CN202779356 U CN 202779356U CN 201220340132 CN201220340132 CN 201220340132 CN 201220340132 U CN201220340132 U CN 201220340132U CN 202779356 U CN202779356 U CN 202779356U
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CN
China
Prior art keywords
spot
mould
die
universal
multipoint
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Expired - Fee Related
Application number
CN 201220340132
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Chinese (zh)
Inventor
陈月明
许佳乐
黄技元
刘培江
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HIT SPACE STEEL STRUCTURE AND CURTAIN WALL CO Ltd
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HIT SPACE STEEL STRUCTURE AND CURTAIN WALL CO Ltd
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Priority to CN 201220340132 priority Critical patent/CN202779356U/en
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Publication of CN202779356U publication Critical patent/CN202779356U/en
Expired - Fee Related legal-status Critical Current
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Abstract

Provided is multipoint die-less hydraulic bulging equipment. Traditional sheet forming equipment is low in production efficiency, low in machining accuracy and not suitable for mass production. The multipoint die-less hydraulic bulging equipment comprises a multipoint die (21) which is arranged inside a shell body (22). The multipoint die (21) is connected with a multipoint die-less die adjustment system (2). The shell body is connected with a pressure machine (3). The multipoint die is connected with a universal head (18). A metal sheet (24) is placed between an upper blank holder (25) and a lower blank holder (26). A flexible base sheet (23) is placed between the universal head and the metal sheet. An air pump (7) is connected with a hydraulic cavity (20) through an air inlet pipe (14). Hydraulic equipment (5) is connected with the hydraulic cavity through a liquid inlet pipe (4) and a liquid outlet pipe (6). The multipoint die-less hydraulic bulging equipment is used for multipoint hydraulic bulging.

Description

Multiple spot dieless hydro-bulging equipment
Technical field:
The utility model relates to the metal forming technical field, is specifically related to a kind of multiple spot dieless hydro-bulging equipment.
Background technology:
Along with the development of society, complicated hyperbolic sheet metal is more and more used in all conglomeraties such as aircraft, boats and ships, express locomotive, automobile and even building.People not only require the hyperboloid that is shaped different, require again that its forming accuracy is high, production efficiency is high, surface quality good, material thickness is even.This has just proposed great challenge to metal sheet forming technique.
In traditional plate manufacturing process, the hand finishing method does not occupy leading position because production efficiency is low, machining accuracy is low, be not suitable for production in enormous quantities in sheet forming.Die forming method production efficiency is high, the precision of workpiece is high, be fit to production in enormous quantities, for many years always in occupation of leading position.But shortcoming is that the mould design and manufacture cycle is long, and maintenance cost is high, and the part that often is shaped needs a plurality of moulds, causes new product development cycle long, and cost is high, and lacks flexibility, and product slightly makes to change rear mould need to redesign replacing.
Therefore, the sheet forming technology of some new shapes is arisen at the historic moment, as: contour peening, laser forming, water jet freeform fabrication, digitlization progressive molding, non-mould multi-point forming etc.Yet the sheet forming technology of these several new shapes also exists some shortcomings and limitations, and the limitation of contour peening is spherical deformation trend, distortion is limited, restrictive condition is harsh, influence factor is various etc.; The shortcoming of laser forming is that cost is high, is not easy control; The water jet freeform fabrication also needs constantly perfect, also has a lot of problems in the practical application; The shortcomings such as the progressive moulding of digitlization need to be made mould, and processing cost is high, the cycle is long, and surface quality is poor; Compare with front several forming techniques, the non-mould multi-point forming technology has lot of advantages: realize mouldless shaping, optimize deformation path, skinny device is shaped large shape part, easily be automated.
The multiple spot freeform fabrication is divided into according to forming mode: multiple spot is to pressing formation technology and multiple spot stretch forming technology.Multiple spot when running into local curvature and change greatly, gauffer occurs easily, and springback capacity is larger to the pressing formation technology.Multiple spot stretch forming technology is compared multiple spot to the pressing formation technology, and its springback capacity is little, formed precision is high, wrinkle resistant pleat.Multiple spot now all is to adopt the mechanical stretching form without the closing mould stretching forming technique, for example clamps plate with clamp and carries out mechanical stretching.And also there are following three kinds of major defects in the mechanical stretching forming mode: (1) forms the stress concentration phenomenon in slab interior easily, the metal material low for a lot of intensity, that percentage elongation is little and some are the larger curved surface of curvature comparatively, in drawing process, produce easily and tear; (2) waste very much material, in today of resource shortage like this, this waste seems and particularly should not; (3) no matter be multiple spot to pressing formation technology or multiple spot stretch forming technology, its forming accuracy is not high, can only reach grade.
The utility model content:
The purpose of this utility model provides a kind of multiple spot dieless hydro-bulging equipment, the hydraulic expanding-forming technology of multiple spot without closing mould stretching forming technique and sheet material combined, by improving, formed the multi-dot hydraulic pressure bulging process, with the hydraulic expanding-forming technology uniform force application of sheet material, distortion is smooth, forming limit is high, forming quality good, forming accuracy is high, the characteristics of mold damage not, the characteristics that do not need to make mould with the multiple spot freeform fabrication, realize automation easily are combined togather.
Above-mentioned purpose realizes by following technical scheme:
A kind of multiple spot dieless hydro-bulging equipment, its composition comprises: the multiple spot mould, described multiple spot mould is installed in the housing, described multiple spot mould transfers the shape system to be connected with multiple spot without the mould mould, described housing is connected with forcing press, described multiple spot mould connects Universal-head, sheet metal is between upper blank holder and lower blank holder, flexible backing plate is between described Universal-head and described sheet metal, air pump is connected with hydraulic cavities by air inlet pipe, and hydraulic test is connected with described hydraulic cavities with drain pipe by feed tube.
Described multiple spot dieless hydro-bulging equipment, described multiple spot transfers the shape system to comprise without the mould mould: computer control system, electric rotating machine, motor, described computer control system is connected with electromagnetic clutch with described electric rotating machine respectively, described motor is installed on the electric machine support, Timing Belt or chain are installed on described electric rotating machine and the described electromagnetic clutch, Timing Belt or chain rotary body are installed on described Timing Belt or the chain, and described electromagnetic clutch is connected with element body.
Described multiple spot dieless hydro-bulging equipment, datum plane is connected with described element body, and described element body is connected with the bulb bearing, and described bulb bearing is connected with Universal-head, between described element body and the described Universal-head extension spring is installed, on the described element body ranging rod is installed.
Beneficial effect:
1. realization mouldless shaping.Construct various profile surface by the control to each element body motion, can replace traditional unitary mould and save required human and material resources and the financial resources such as mould design and manufacture, debugging and preservation, shorten significantly life cycle of the product, reduce production costs, improve the competitiveness of product.Compare with the die forming method, not only save the expense of processing and manufacturing mould, and save a large amount of repairing a die and the mode transfer time; Compare with the hand finishing method, the Product Precision of shaping is high, quality is good, and has significantly improved production efficiency.
Realize automation.Area of computer aided is adopted in curved surface appearance, realizes the integrated production of CAD/CAM/CAE, high efficiency, and labour intensity is little, has greatly improved labourer's operating environment.
Forming limit is high.Because the effect of hydraulic pressure is tightly fitted blank and die in the hydraulic expanding-forming, produce " friction keeps effect ", improved the bearing capacity of force transmission region.What is more important, complex curved surface parts for automobile manufacturing field, oppositely the effect of hydraulic pressure forms " soft drawn is stretched muscle ", eliminate suspension area, set up useful friction between blank and the mould so that the radially tension of fillet place, die bottom blank reduces, strain track is skew left on forming limit figure, can significantly improve forming limit, and the two tensile stress states of the grade that tradition stretches then cause drawing crack easily.
Forming accuracy is high.The multiple spot mould transfers shape to adopt closed-loop control, will transfer the shape precision to be controlled at micron order.The Universal-head of multiple spot mould element body end take on the summit as centre of sphere rotation, has eliminated the camber line error of common round end element body.Use hydraulic expanding-forming significantly to improve Forming Quality and the performance of workpiece, the applying degree of workpiece and mould is good, and springback capacity is minimum.
. to the space curved surface strong adaptability of complexity.The Universal-head rotational angle of multiple spot mould element body end can reach 39 °, can seamlessly transit along with whole curved surface.The Universal-head of multiple spot mould element body end is replaceable, is replaced with the Universal-head of special surface shape, has greatly increased the multiple spot mould to complex-curved adaptability.
Sheet metal thickness attenuate amount is even, and residual stress is little.Hydroforming so that workpiece in the process that is shaped, stressed evenly each point of workpiece enters plastic deformation uniformly, be out of shape well-balancedly, so the workpiece after the shaping all enters plastic period, even thickness does not almost have residual stress.
Transfer shape speed fast.A plurality of element bodies because an electric rotating machine can be connected transfer the shape time significantly to be reduced, and can transfer complete model in 3 minutes, have greatly improved the operating efficiency of multi-dot hydraulic pressure bulging process.
Description of drawings:
Accompanying drawing 1 is the structural representation of this product.
Accompanying drawing 2 is structural representations that the multiple spot mould is transferred the shape system in the accompanying drawing 1.
Accompanying drawing 3 is left views of accompanying drawing 2.
Accompanying drawing 4 is element body in the accompanying drawing 2 and the connection diagram of Universal-head.
The specific embodiment:
Embodiment 1:
A kind of multiple spot dieless hydro-bulging equipment, its composition comprises: multiple spot mould 21, described multiple spot mould is installed in the housing 22, described multiple spot mould transfers shape system 2 to be connected with multiple spot without the mould mould, described housing is connected with forcing press 3, described multiple spot mould connects Universal-head 18, sheet metal 24 is between upper blank holder 25 and lower blank holder 26, flexible backing plate 23 is between described Universal-head and described sheet metal, air pump 7 is connected with hydraulic cavities 20 by air inlet pipe 14, and hydraulic test 5 passes through feed tube 4 is connected with drain pipe and is connected with described hydraulic cavities.
Embodiment 2:
According to embodiment 1 described multiple spot dieless hydro-bulging equipment, described flexible backing plate adopts polyurethane sheet, described flexible backing plate can be in polyurethane sheet the composition metal intermediate plate, the thickness of described flexible backing plate is determined according to Forming Workpiece profile characteristics and Forming Workpiece metal material.
Embodiment 3:
According to embodiment 1 described multiple spot dieless hydro-bulging equipment, described multiple spot mould transfers the shape system to comprise: computer control system 8, electric rotating machine 9, motor, described computer control system is connected with electromagnetic clutch with described electric rotating machine respectively and is connected, described motor is installed on the electric machine support 11, Timing Belt or chain 12 are installed on described electric rotating machine and the described electromagnetic clutch, Timing Belt or chain rotary body 13 are installed on described Timing Belt or the chain, and described electromagnetic clutch is connected with element body 15.
Embodiment 4:
According to embodiment 1 described multiple spot dieless hydro-bulging equipment, described multiple spot mould is transferred the shape system, adopts described electric rotating machine by described Timing Belt or chain, drives described element body and rotates accent shape.By electromagnetic clutch, the clutch of control element body and Timing Belt rotary body.Described Timing Belt or chain a plurality of described element bodies of can connecting.Described electric rotating machine, described electromagnetic clutch all link to each other with computer control system.Described computer control system is transferred the shape elevation information according to the element body of described ranging rod feedback, controls described electric rotating machine rotation, described electromagnetic clutch clutch.Transfer the shape precision to reach micron order.
Embodiment 5:
According to embodiment 1 described multiple spot dieless hydro-bulging equipment, described multi-dot hydraulic pressure stretch forming technique, described element body is the screw lift structure, by the rotation of screw mandrel, realizes feed screw nut's lifting.
Embodiment 6:
According to embodiment 1 described multiple spot dieless hydro-bulging equipment, datum plane 1 is connected with described element body, described element body is connected with bulb bearing 17, described bulb bearing is connected with Universal-head 18, between described element body and the described Universal-head extension spring 19 is installed, ranging rod 16 is installed on the described element body.It is terminal that described Universal-head is installed in described element body, rotates take the Universal-head top center point as the centre of sphere, and the maximum space corner is 39 °, and in the rotation process, the vertical coordinate of top center point does not change.Described Universal-head is detachable, changes according to the profile surface form.

Claims (3)

1. A kind of multiple spot dieless hydro-bulging equipment, its composition comprises: the multiple spot mould, it is characterized in that: described multiple spot mould is installed in the housing, described multiple spot mould transfers the shape system to be connected with multiple spot without the mould mould, described housing is connected with forcing press, described multiple spot mould connects Universal-head, sheet metal is between upper blank holder and lower blank holder, flexible backing plate is between described Universal-head and described sheet metal, air pump is connected with hydraulic cavities by air inlet pipe, and hydraulic test is connected with described hydraulic cavities with drain pipe by feed tube.
2. Multiple spot dieless hydro-bulging equipment according to claim 1, it is characterized in that: described multiple spot transfers the shape system to comprise without the mould mould: computer control system, electric rotating machine, motor, described computer control system is connected with electromagnetic clutch with described electric rotating machine respectively, described motor is installed on the electric machine support, Timing Belt or chain are installed on described electric rotating machine and the described electromagnetic clutch, Timing Belt or chain rotary body are installed on described Timing Belt or the chain, and described electromagnetic clutch is connected with element body.
3. Multiple spot dieless hydro-bulging equipment according to claim 2, it is characterized in that: datum plane is connected with described element body, described element body is connected with the bulb bearing, described bulb bearing is connected with Universal-head, between described element body and the described Universal-head extension spring is installed, on the described element body ranging rod is installed.
CN 201220340132 2012-07-15 2012-07-15 Multipoint die-less hydraulic bulging equipment Expired - Fee Related CN202779356U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220340132 CN202779356U (en) 2012-07-15 2012-07-15 Multipoint die-less hydraulic bulging equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220340132 CN202779356U (en) 2012-07-15 2012-07-15 Multipoint die-less hydraulic bulging equipment

Publications (1)

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CN202779356U true CN202779356U (en) 2013-03-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658292A (en) * 2013-08-13 2014-03-26 哈尔滨工业大学空间钢结构幕墙有限公司 Normal temperature or thermal state fluid reconfigurable die bulging system and bulging method
CN106391813A (en) * 2016-12-09 2017-02-15 吉林大学 Three-dimensional curve stretch forming method based on multi-point force loading mode
EP3222369A1 (en) * 2016-03-23 2017-09-27 Jose Ortiz Cicuendez Hydroforming press with open die and integrated deep-drawing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658292A (en) * 2013-08-13 2014-03-26 哈尔滨工业大学空间钢结构幕墙有限公司 Normal temperature or thermal state fluid reconfigurable die bulging system and bulging method
EP3222369A1 (en) * 2016-03-23 2017-09-27 Jose Ortiz Cicuendez Hydroforming press with open die and integrated deep-drawing
CN106391813A (en) * 2016-12-09 2017-02-15 吉林大学 Three-dimensional curve stretch forming method based on multi-point force loading mode

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20130313

Termination date: 20160715