CN1199746C - Expanding method and equipment for implementing said expanding method - Google Patents
Expanding method and equipment for implementing said expanding method Download PDFInfo
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- CN1199746C CN1199746C CN 02115301 CN02115301A CN1199746C CN 1199746 C CN1199746 C CN 1199746C CN 02115301 CN02115301 CN 02115301 CN 02115301 A CN02115301 A CN 02115301A CN 1199746 C CN1199746 C CN 1199746C
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- bulging
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Abstract
The present invention relates to an expanding method and a device for realizing the expanding method. The method comprises the following processes: a blank body enters a mould; the mould is closed; expanding liquid is charged into the blank body while air is discharged; an expanded finished product is demoulded. The method is characterized in that the expanding liquid can be water or water in oil or the liquid of oil in water, and the pressure of the expanding liquid is provided by an expanding liquid cylinder pushed by a hydraulic cylinder driven by hydraulic oil. Compared with the prior art, the present invention can be used to continuously expand the blank body a product, and simultaneous can ensure the product quality after expansion. No hydraulic oil difficult to be washed is left on the product after being expanded, and the product after being expanded can not be damaged by the mould when taken out.
Description
Technical field:
The present invention relates to a kind of mechanical molding method and device thereof.
Background technology:
Bulging is to utilize pressure cylindrical part that diameter is less or conical part to expand from inside to outside to become a kind of technological method for processing of the bigger protrusion curved surface part of diameter, and the hollow object expanding method mainly contains three kinds:
1, punching block bulging method: when utilizing press ram to act on the distinguish punch downwards, punch expands outwardly along the core conical surface, makes cylindrical element increasing diameter the earth bulging be out of shape.After bulging finished, the distinguish punch was returned to the home position under the effect of forcing press push rod, so that the workpiece behind the bulging is taken out.Utilize this structure of steel die to realize bulging, its distinguish is many more, and then the bulging precision is high more, but mould structure is just complicated more simultaneously, is difficult to guarantee to obtain the higher workpiece of precision with this expanding method.
2, the hydraulic expanding-forming method: this method is that workpiece is put into punch, utilize fluid pressure to act on the workpiece inwall and make workpiece under the effect of pressure, paste mold forming, the general hydraulic fluid that is adopted is a hydraulic oil, though to be applied to the bulging power of base substrate inner chamber even for hydraulic oil during bulging, material at the best of times is out of shape, and technical process is easy, with low cost, product lines behind the bulging are level and smooth, symmetry, the bulging that defective can not occur is irregular, but under high pressure, hydraulic oil can penetrate in the base substrate metal, need specially treated will penetrate into intrametallic hydraulic oil after the shaping and clear out, otherwise can influence normal use, increase manufacturing cost owing to cleaning hydraulic oil.
3, rubber die bulging method: this method is to utilize the rubber die bulging, the deformation ratio of workpiece is more even, also be convenient to the complicated hollow object of machining shape, but because the bulging of base substrate is to finish toward the expansive force that expands all around under the external force extruding by rubber, be subjected to the restriction of rubber essence, expansive force is uneven often, make that to be easy to generate some position bulging behind the base substrate bulging insufficient, defectives such as distortion, and, rubber can heating produce distortion after using a period of time continuously, deliquescing makes rubber lose the effect of bulging, thereby strengthens the scale error after the formed product.
Summary of the invention:
Goal of the invention of the present invention is to provide a kind of and can be continuously the base substrate of product be carried out bulging, while can guarantee the product quality behind the bulging again, product behind the bulging can not leave the hydraulic oil that is difficult to clean, can and not realize the device of this expanding method by expanding method that mould damaged when the product behind the bulging takes out.
Expanding method of the present invention is to realize like this, comprise that base substrate enters mold process, matched moulds process, charges into bulging liquid also while exhaust process, bulging finished product knockout course toward base substrate, its special feature is that bulging liquid can be water, can be Water-In-Oil, can be oil-in-water liquid, the pressure of bulging liquid be to promote the bulging fluid cylinder by the hydraulic cylinder that hydraulic oil drives to provide.During work, the hydraulic oil of hydraulic system drives the hydraulic cylinder action and also is passed to the bulging fluid cylinder, and the bulging liquid in the bulging liquid cylinder is entered in the base substrate base substrate distending is shaped by being sealed in pipeline in the base substrate with the pressure set.Because the employing of bulging liquid is water or water oil mixture, and separates with hydraulic jack initiatively, when therefore having avoided with the hydraulic oil bulging, hydraulic oil penetrates into the appearance of intrametallic problem; Adopt hydraulic jack to drive the action of bulging fluid cylinder, when having avoided directly bulging liquid being exerted pressure with water pump, water in the bulging liquid greatly reduces use cost to the corrosion of water pump and corresponding various by-pass valve controls, has guaranteed the hydraulic stability of bulging liquid and the stability of use.
Here, base substrate is put upside down in mould, and bulging liquid enters below base substrate in the base substrate, simultaneously it again the air in the base substrate is sealed in the base substrate by one and in the base substrate blast pipe of top of chamber drain.Exhaust finishes, and transfers the pressurization bulging automatically to.Base substrate adopts the form of putting upside down, can be effectively, neatly the air in the base substrate inner chamber is drained, guarantee carrying out smoothly of bulging.
In order to make the dimensionally stable behind the base substrate bulging, can make the bulging liquid pressurize a period of time that enters in the base substrate.
When manually from mould, taking out the bulging finished product, mould is to the damage of bulging finished product outer surface, and when taking out the bulging finished product, all moulds break away from from the bulging finished product earlier, utilize bulging liquid that finished product is released core then once more, so just can take the bulging finished product easily away.
Bulging device of the present invention is to realize like this, comprise that expanding die, sealing extend into the sealing column that has bulging liquid conveyance conduit, bulging liquid process units in the base substrate inner chamber, its special feature be bulging liquid process units mainly by the bulging fluid cylinder, drive the action of bulging liquid cylinder piston hydraulic cylinder Power Drive Unit, bulging liquid storage tank, be arranged between bulging liquid storage tank and bulging fluid cylinder and be arranged on bulging liquid conveyance conduit on the sealing column and the check-valves between the bulging fluid cylinder constitutes.During work, put on the expanding die base substrate and matched moulds, sealing column extend in the base substrate inner chamber, the hydraulic jack Power Drive Unit drives the bulging liquid cylinder piston and moves reciprocatingly, act in the bulging liquid inspiration bulging fluid cylinder on the bulging liquid storage tank by oil sucting valve (being check-valves), then with the bulging liquid in the bulging fluid cylinder by with sealing column that bulging fluid cylinder outlet communicates on bulging liquid conveyance conduit pump in the base substrate inner chamber, base substrate is shaped along dies cavity shape distending.
Here, expanding die is mainly by the bulging patrix, the bulging counterdie, guide plate constitutes, the bulging counterdie is positioned on the guide plate, the bulging counterdie is made of membrane module under two or more than two the bulging of symmetry, guide plate is positioned on the base plate, the membrane module outside is connected with following baffle plate side bearing by pull bar and spring under the bulging, compression spring plays the effect of automatic mold splitting, the bulging counterdie outside is the conical surface, the bulging patrix of the corresponding bulging counterdie conical surface is provided with the inclined-plane that expands outwardly, can utilize the inclined-plane to make the counterdie matched moulds when patrix is descending, guide plate middle part is provided with a hole that matches with the sealing column that has bulging liquid conveyance conduit, sealing column be positioned at mould below.During work, the base substrate sealing shroud is connected on the sealing column, put down the bulging patrix then, under the effect on bulging patrix inclined-plane, membrane module under the bulging is lumped together, connect into expanding die with the bulging patrix, and utilize the pressure of machine patrix that the mould pressurize is become expanding die, inject bulging liquid with the base substrate bulging by the bulging liquid conveyance conduit on the sealing column toward the base substrate inner chamber then, after the base substrate distending was shaped, the pressure with bulging liquid shed earlier, mentions the bulging patrix then, at this moment, membrane module toward separately, makes the outer surface of bulging finished product can not touch expanding die all around under the drive of compression spring under the bulging, when having avoided extracting finished product or having extracted the bulging finished product, the outer surface of bulging finished product is damaged by expanding die.
Here, be provided with the discharge duct at straight-through sealing column top on sealing column, discharge duct communicates with bulging liquid storage tank by a check-valves.Blast pipe is set, the gas in the base substrate can be drained, in order to avoid the carrying out smoothly of these compressible gases affect base substrate bulgings.After gas is drained in the base substrate, close check-valves automatically, begin the base substrate bulging that pressurizes.
Be provided with the sealing top cover of movable sealing between guide plate hole wall and sealing column between guide plate hole wall and sealing column.The effect of sealing top cover is in the bulging process anchor ring of base substrate mouth to be applied a jacking force and simultaneously with its sealing, the distortion percentage elongation the when jacking force that applies helps the base substrate bulging makes base substrate more even to bulging.During the demoulding, the jacking effect of sealing top cover helps the demoulding of bulging finished product.
The present invention compared with the prior art, have and can be continuously the base substrate of product be carried out bulging, can guarantee simultaneously the product quality behind the bulging again, can be when the product behind the bulging can not leave the hydraulic oil that is difficult to clean and the product behind the bulging and takes out by the advantage that mould damaged.
Description of drawings:
Fig. 1 is the structural representation of bulging device of the present invention;
Fig. 2 is a bulging machine hydraulic schematic diagram.
The specific embodiment:
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
As shown in the figure, expanding method of the present invention is to realize like this, comprise that base substrate enters mold process, the matched moulds process, charge into bulging liquid and while exhaust process toward base substrate, bulging finished product knockout course, its special feature is that bulging liquid can be water, it can be Water-In-Oil, it can be oil-in-water, the pressure of bulging liquid is to be provided by the bulging fluid cylinder that a hydraulic jack drives, hydraulic jack drives the piston reciprocates on the bulging fluid cylinder, from bulging liquid storage tank, draw bulging liquid earlier, then bulging liquid is pumped in the base substrate inner chamber with the pressure of setting, base substrate is shaped along expanding die cavity shape distending, base substrate is put upside down in mould, bulging liquid enters below base substrate in the base substrate, the air in the base substrate be sealed in the base substrate by one and in the base substrate blast pipe of top of chamber drain, during the demoulding, all moulds break away from the bulging finished product earlier, utilize bulging liquid that finished product is pushed away core again,, just take the bulging finished product then away so that break away from the core rod seal section.
Bulging device of the present invention is to realize like this, comprise expanding die 1, sealing extend into the sealing column 5 that has bulging liquid conveyance conduit 4 in base substrate 2 inner chambers 3, bulging liquid process units 6, its special feature is that bulging liquid process units 6 is mainly by bulging fluid cylinder 7, drive the hydraulic cylinder Power Drive Unit 9 of bulging fluid cylinder 7 pistons 8 actions, bulging liquid storage tank 10, be arranged on 7 of bulging liquid storage tank 10 and hydraulic cylinders and be arranged on bulging liquid conveyance conduit 4 on the sealing column 5 and the check-valves 11 of 7 of hydraulic cylinders, 12 constitute, expanding die 1 is mainly by bulging patrix 13, bulging counterdie 14, guide plate 15 constitutes, bulging counterdie 14 is positioned on the guide plate 15, bulging counterdie 14 is made of membrane module 16 under two or more than two the bulging of symmetry, guide plate 15 is positioned on the base plate 28, membrane module 16 outsides are connected with following baffle plate 28 side bearings 17 by pull bar 18 and spring 19 under the bulging, bulging counterdie 14 outsides 20 are the conical surface, the bulging patrix 13 of corresponding bulging counterdie 14 conical surfaces 20 is provided with the inclined-plane 21 that expands outwardly, the middle part of guide plate 15 is provided with a hole 22 that matches with the sealing column 5 that has a bulging liquid conveyance conduit 4, sealing column 5 be positioned at mould 1 below, on sealing column 5, be provided with the discharge duct 23 at straight-through sealing column 5 tops, discharge duct 23 communicates with bulging liquid storage tank 10 by a check-valves 24, on guide plate 15, be provided with drip tray 25, the effect of drip tray 25 is that the bulging liquid that flows out from the finished product inner chamber during with the demoulding collects, and inwall and 5 of the sealing column in guide plate 15 holes 22 is provided with movable sealing and overlaps 26 in the sealing top of 5 of guide plate 15 holes, 22 inwalls and sealing column.
Claims (9)
1, a kind of expanding method, comprise that base substrate enters mold process, matched moulds process, charges into bulging liquid process, bulging finished product knockout course toward base substrate, it is characterized in that bulging liquid is water or Water-In-Oil liquid or oil-in-water liquid, the pressure of bulging liquid is to be provided by the bulging fluid cylinder that a hydraulic jack drives.
2, expanding method according to claim 1 is characterized in that base substrate puts upside down in mould, bulging liquid enters below base substrate in the base substrate, the air in the base substrate be sealed in the base substrate by one and in the base substrate blast pipe of top of chamber drain.
3,, it is characterized in that to make the bulging liquid pressurize a period of time that enters in the base substrate according to the described expanding method of claim 1.
4, according to the described expanding method of claim 1, it is characterized in that when taking out the bulging finished product, all moulds break away from earlier from the bulging finished product, and utilize bulging liquid upwards finished product to be released core, just take the bulging finished product then away.
5, according to the described expanding method of claim 1, it is characterized in that hydraulic jack drives the piston reciprocates on the bulging fluid cylinder, bulging liquid is drawn in effect by oil sucting valve earlier from bulging liquid storage tank, then bulging liquid is pumped in the base substrate inner chamber with the pressure of setting, base substrate is shaped along expanding die cavity shape distending.
6, a kind of bulging device, comprise that expanding die, sealing extend into the sealing column that has bulging liquid conveyance conduit, bulging liquid process units in the base substrate inner chamber, it is characterized in that bulging liquid process units mainly by the bulging fluid cylinder, drive the action of bulging liquid cylinder piston hydraulic cylinder Power Drive Unit, bulging liquid storage tank, be arranged between bulging liquid storage tank and hydraulic cylinder and be arranged on bulging liquid conveyance conduit on the sealing column and check-valves and the liquid sucting valve between hydraulic cylinder constitutes.
7, according to the described bulging device of claim 6, it is characterized in that expanding die is mainly by the bulging patrix, the bulging counterdie, guide plate constitutes, the bulging counterdie is positioned on the guide plate, the bulging counterdie is made of membrane module under two or more than two the bulging of symmetry, guide plate is positioned on the base plate, the membrane module outside is connected with following baffle plate side bearing by pull bar and spring under the bulging, the bulging counterdie outside is the conical surface, the bulging patrix of the corresponding bulging counterdie conical surface is provided with the inclined-plane that expands outwardly, the middle part of guide plate is provided with a hole that matches with the sealing column that has a bulging liquid conveyance conduit, sealing column be positioned at mould below.
8, according to the described bulging device of claim 6, it is characterized in that on sealing column, being provided with the discharge duct at straight-through sealing column top, discharge duct communicates with bulging liquid storage tank by a check-valves.
9,, it is characterized in that being provided with the sealing top cover of movable sealing between guide plate hole wall and sealing column between guide plate hole wall and sealing column according to the described bulging device of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02115301 CN1199746C (en) | 2002-05-30 | 2002-05-30 | Expanding method and equipment for implementing said expanding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02115301 CN1199746C (en) | 2002-05-30 | 2002-05-30 | Expanding method and equipment for implementing said expanding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1380149A CN1380149A (en) | 2002-11-20 |
| CN1199746C true CN1199746C (en) | 2005-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02115301 Expired - Fee Related CN1199746C (en) | 2002-05-30 | 2002-05-30 | Expanding method and equipment for implementing said expanding method |
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| Country | Link |
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| CN (1) | CN1199746C (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101028637B (en) * | 2006-02-27 | 2010-05-12 | 梁雪华 | Liquid-expanding formation mould and liquid-expanding formation process using the mould |
| CN100431733C (en) * | 2006-10-11 | 2008-11-12 | 梁雪华 | Hydraulic expansion forming process |
| CN100413612C (en) * | 2006-10-13 | 2008-08-27 | 燕山大学 | Rotary shell part hydraulic expansion integrating device |
| JP4374394B1 (en) * | 2008-07-04 | 2009-12-02 | 新日本製鐵株式会社 | Hydroform processing apparatus and hydroform processing method |
| CN101700553B (en) * | 2009-11-23 | 2011-11-02 | 佛山市南海大和钢结构有限公司 | Manufacture technology of ball connection point with coreless necking bulging pressing method |
| CN102029316A (en) * | 2010-10-20 | 2011-04-27 | 吉林省元隆达工装设备有限公司 | Hydraulic control system of internal high-pressure forming machine |
| CN103537876B (en) * | 2013-10-30 | 2016-05-25 | 北京航天新风机械设备有限责任公司 | Titanium alloy Double curve degree rotating cylinder processing method |
| CN104438539B (en) * | 2014-11-04 | 2017-02-22 | 贵州风雷航空军械有限责任公司 | Large thin-wall cup-shaped metal bulging device |
| CN107649586B (en) * | 2017-09-22 | 2019-02-15 | 贵州航天新力铸锻有限责任公司 | It is a kind of for circular cone involucrum shaping dies and its manufacturing process of circular cone involucrum |
| CN108465726B (en) * | 2018-04-16 | 2024-01-30 | 广东永力泵业有限公司 | Hydraulic bulging method and bulging equipment for centrifugal pump shell |
| CN108723160B (en) * | 2018-06-22 | 2020-02-14 | 西安飞机工业（集团）有限责任公司 | Forming method and forming die for thin-wall spherical part |
| CN109781326B (en) * | 2019-03-08 | 2021-04-16 | 广东兴发印铁制罐有限公司 | Metal tank pressure detection equipment |
| CN111250587B (en) * | 2020-03-27 | 2024-05-07 | 安徽富光销售有限公司 | Water expansion forming die |
| CN114011943A (en) * | 2020-10-30 | 2022-02-08 | 哈尔滨哈飞航空工业有限责任公司 | Die for bending and bulging part with negative angle |
| CN112775256A (en) * | 2021-03-16 | 2021-05-11 | 南方泵业股份有限公司 | Forming die and forming method of pump body volute |
| CN114101488B (en) * | 2021-11-10 | 2023-04-11 | 中国航发南方工业有限公司 | Down-pressing convex rib liquid-filling bulging device |
| CN114247802B (en) * | 2021-12-14 | 2024-02-02 | 上海航天精密机械研究所 | Spherical multi-pass piece multi-process joint integral forming method and spherical multi-pass piece |
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2002
- 2002-05-30 CN CN 02115301 patent/CN1199746C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1380149A (en) | 2002-11-20 |
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