CN1042099A - Set for supper-deep thin shell integral forming method and mould - Google Patents
Set for supper-deep thin shell integral forming method and mould Download PDFInfo
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- CN1042099A CN1042099A CN 89108445 CN89108445A CN1042099A CN 1042099 A CN1042099 A CN 1042099A CN 89108445 CN89108445 CN 89108445 CN 89108445 A CN89108445 A CN 89108445A CN 1042099 A CN1042099 A CN 1042099A
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Abstract
Set for supper-deep thin shell integral forming method and mould belong to metal foil part forming technique, to the circumferential discontinuous product of the housing that exceeds the pull and stretch limit, with draw, flange, bulging and be aided with the technology of other forming method; Adopt the mould of concavo-convex mode structure, and flange and draw punch and be consistent, the correlation between each punch shape and its corresponding sports direction, between plane, die hole and the corresponding punch direction of motion at moulding section should make separately product and the relation between the depth direction of finished product be consistent.The present invention is skillfully constructed, implements easily, and improving the quality reduces cost, and starts the precedent of the whole processing of standard machinery method set for supper-deep thin shell.
Description
The invention belongs to metal foil part forming technique, be used for the shell degree of depth and exceed the moulding of drawing processing limit product.
The moulding of known set for supper-deep thin shell is many to be formed by two or more drawn component assembly weldings, as present 250 model motorcycle tank upper casing.Surmount the processing difficulties that the pull and stretch limit is brought though this method has overcome, also produce simultaneously some problems, as welding with weld seam can influence global shape and quality, welding seam leakage, surface irregularity make skin of paint foaming etc., repair rate is reached more than 20%.Shaped by fluid pressure also is the method for the super dark product of processing, and Forming Quality is better, but its equipment cost costliness, and the use maintenance of process conditions, equipment is all had higher requirements.
The present invention seeks to propose to solve the technical scheme and the corresponding mould of set for supper-deep thin shell product global formation,, make every effort to use conventional equipment to realize processing purpose, reduce product cost to improve the quality of products, to simplify process.
Process in the object of the invention partly is to realize like this, continue to use drawing and bloated type technology in the shell moulding, and the required assistant formation method of local shape in the finished product, the main points of this process are to be used for finished product at the first one-step forming that allows pull and stretch limit inner housing with drawing; To exceeding the part of this drawing depth, if it is milder that its shell wall curved surface changes, and when the shell shell wall that circumferentially is coiled product depth direction is discontinuous, can be by flange is partly carried out in the flanging of drawing product, it is turned over to the direction of the finished product degree of depth, tentatively realize the shape of this part; When there is specific (special) requirements the finished product part, keep the desired forming method of this shape, as cut out, local flange etc., in order to realize the moulding of this part; Finally realize whole moulding requirements of finished product by the bulging operation.The whole like this moulding degree of depth is shared by two operations, change mild discontinuous curved surface and provide precondition for the moulding that participates in this part by flange, this shape can be realized by flange processing is preliminary, and with draw part and be connected mutually, overcome the processing difficulties that super dark distortion is caused basically; The part that its distortion is not enough is finally solved by bulging, has finished the global formation of super dark thin-wall case under this specified conditions, thereby has realized the content of method part in the object of the invention.
The inventive method is when the degree of depth of drawing and moulding part is inconsistent, and drawing direction should be perpendicular to the basic trend of shell blind end end face (promptly drawing the product bottom).The variation of this direction can be reduced to minimum degree with the influence of difference on the finished product degree of depth, thereby helps giving full play to the ability of drawing processing, and this method more is tending towards rationally, and the change of direction need be controlled within the scope of moulding permission certainly.
The inventive method adopts the method that realizes this finished form requirement through once drawing to housings close end end or blind end end and near region scope thereof.One-shot forming has reduced manufacturing procedure, helps improving the quality of products.
The flange direction of the inventive method is consistent with the direction of the finished product degree of depth, and circumferentially implements flange processing simultaneously along drawing the product flanging.Will seeking unification of deformation direction and finished product helps the control to process like this; Implement flange simultaneously and make the stroke that mould is stressed evenly, reduce processing, improve working (machining) efficiency.
In required other forming method of the inventive method finished product local shape, deflection is little, less the merged to bulging in-process of processing resistance; Method by bulging replaces them.Reduce the processing content of whole technology like this, helped improving working (machining) efficiency, simplified apparatus.
Mould part in the object of the invention also has the mould of concavo-convex mode structure except that the finished product local shape really belongs to the mould that needs other processing method, promptly concavo-convex mode structure draws and bloated pattern tool; Also comprise simultaneously the flange male and female mold, wherein except that flanging die with draw that punch is consistent in the shape of moulding section, each die makes by its moulding requirement, the correlation between the punch shape and the corresponding punch direction of motion, between die hole and the corresponding punch direction of motion should make the relation between the depth direction that draws product, flange product, bulging product and finished product be consistent.Determining of this relation between the mould, the shaped position of mould all is that the crudy that guarantees each operation meets the requirements, the correct needs that are connected between each operation.Thereby realize method of the present invention, meet the moulding requirement of finished product.
In the mould of the present invention, when drawing direction and finished product depth direction have angle, should change this angle value, be that the formation value is the angle of this corner dimension between the direction of motion of pairing drawing direction of flanging die and flanging die that the plane, flange hole and the flanging die direction of motion should the formation value be the angle at this supplementary angle, angle also with reference to drawing punch between flanging die shape and its direction of motion.Like this, drawing depth direction that product forms this part of finished product just may to form the flange product degree of depth consistent with the flange product, and satisfies the moulding requirement, and flange also just may circumferentially take place in the product flanging simultaneously.
The shape of drawing punch top shape or top and near region thereof of mould of the present invention and the shape of finished product appropriate section are in full accord.The shape of this part can reduce the content of subsequent handling processing, and help improving product quality and production efficiency by drawing one-shot forming like this.Naturally type punch top or the double shape that contains the near region, top of expanding this moment is also in full accord with the shape of finished product appropriate section.
Two slit bamboo or chopped wood dies link through the drive disk assembly of inclined plane slide block transmission and expansion machine bed respectively in the expanding die of the present invention; And flexible resetting-mechanism, two slit bamboo or chopped wood dies are linked with mould bases respectively.Can make the motion of two slit bamboo or chopped wood dies make it to reach closed by drive disk assembly through inclined plane slide block mechanism like this and clamp the normal operating conditions of die when guaranteeing bulging; Flexible restoring organ can realize that when the needs die sinking die separates automatically, thereby realizes the control to die, increases work efficiency.
The present invention utilizes the ingenious combination of known shell processing method, has reduced the machining deformation amount significantly, has reduced technology difficulty, has simplified process, reduces product cost for improving the quality of products and creates conditions.Started with standard machinery, conventional mould and realized the precedent of the big shape of the degree of depth as the set for supper-deep thin shell global formation of 250 motorcycle tank upper casings.
Accompanying drawing has provided the signal of the embodiment of the invention.
Fig. 1 is the drawing die diagrammatic sketch;
Fig. 2 is the flange die diagrammatic sketch;
Fig. 3 is the bulging die structure chart.
The embodiment of the invention is that object is implemented the present invention program with open country 250 II type motorcycle tank upper casings, its upper casing surface can be divided into top 3 and the surperficial discrete both sides 8 that continuous curve surface is arranged, can realize that moulding is preliminary by drawing for the top, both side surface 8 is dug to the direction consistent with the product degree of depth by the part of flanging 4 after cutting out that will draw the product appropriate section, realize the distortion of processing product and finished form differences immediately by bulging, finally finish process.
For further improving technical process, this example has second embodiment will draw the direction and the mould hole of striving choosing by contour drawing process principle active force, promptly in the upper casing plane of symmetry, depart from 10 ° with the upper casing depth direction, that is basic vertical upper casing top 3 basic trends.For making flange processing be easier to meet the finished product requirement, the flanging die travel direction should be consistent with the finished product depth direction.The lower edge shape of upper casing rear and front end with draw that uncompleted crushed element can be solved at last in the lump by the bulging operation behind the flange.
This routine mould is all concavo-convex mode structure, the cross section decision of the plane of parallel upper casing top basic trend to upper casing done by crossing upper casing trailing flank seamed edge lower edge in the hole of drawing die 2, the direction vertical opening that draws, be the basic trend at vertical upper casing top, with the upper casing depth direction 10 ° of its plane of symmetry intrinsic deflections, it is in full accord to draw punch 1 bottom and near region thereof and finished product upper casing top and near region shape thereof.
Flanging die punch 7 top shape are identical with drawing die punch 1, make punch by the situation of carrying out flange processing along the upper casing depth direction, die 5 holes are with to draw die the same, but need fixedly the time by the hole be fixed on the flange mould bases 6 with relation between depth direction, the plane, hole becomes 80 ° of angles with punch 7 directions of motion.
Bulging die 9 conforms to finished form, i.e. the moulding of upper casing front and back end flange is also finished by the bulging operation.Be associated with inclined-plane 12 respectively on the two slit bamboo or chopped wood dies, this inclined-plane matches with inclined-plane 10 on being associated in punch press moving component trim ring 11, forms inclined plane slide block transmission 10-12.Two slit bamboo or chopped wood dies also link through elastomeric element 13 and mould bases 14 respectively simultaneously, and the elastomeric element force direction makes two slit bamboo or chopped wood dies separately.Punch 15 tops are consistent with flanging die 7 top shape.
This routine process is as follows: suitable blank is prepared in the requirement by upper casing shape and this processing technology, the position forms the upper casing top shape by drawing die in accordance with regulations, the side that will draw product by flanging die after cutting is dug, be placed at last within the bulging die, finish final molding by expanding die.
Because deflection obtains an equitable breakdown, the ability of different operations is appropriately brought into play, and this programme not only solves the global formation of open country 250 II type motorcycle tank upper casings, and has reduced production cost, also is expected to improve the yield rate of product.For similar set for supper-deep thin shell provides successful global formation precedent.
Claims (13)
1, the set for supper-deep thin shell integral forming method comprise draw, bulging and other required manufacturing process of finished product partial plastic forming, it is characterized in that tentatively realizing by drawing operation in the shaping that allows pull and stretch limit inner housing 3, to the surplus degree of depth at its shell wall 8 when changing mild discontinuous curved surface, be by partly carrying out flange and process and realize its original shaping to drawing the product flanging, and be aided with other required forming method of finished product local shape, finally finish whole moulding requirements of finished product by the bulging operation.
2, method according to claim 1 is characterized in that drawing direction should be perpendicular to the basic trend of shell blind end end face.
3, method as claimed in claim 1 or 2 is characterized in that housings close end end and near region scope thereof, by once drawing the moulding requirement that realizes this part finished product.
4, method as claimed in claim 1 or 2 is characterized in that the flange direction is the direction of the finished product degree of depth, and circumferentially implements flange processing simultaneously along the product flanging.
5, as method as described in the claim 3, it is characterized in that the flange direction is the direction of the finished product degree of depth, and circumferentially implement flange processing simultaneously along the product flanging.
6, as method as described in the claim 1,2 or 5, it is characterized in that not processing the less moulding of resistance for deflection very much and can merging to the bulging in-process in required other forming method of finished product local shape, finish with the method for bulging.
7, as method as described in the claim 3, it is characterized in that not processing the less moulding of resistance for deflection very much and can merging to the bulging in-process in required other forming method of finished product local shape, finish with the method for bulging.
8, as method as described in the claim 4, it is characterized in that not processing the less moulding of resistance for deflection very much and can merging to the bulging in-process in required other forming method of finished product local shape, finish with the method for bulging.
9, the set for supper-deep thin shell integrally forming mould comprises the drawing die 1 of concavo-convex mode structure, 2, expanding die 9,15 and the finished product local shape really belong to the mould that needs other processing method, it is characterized in that also comprising the mould 5 of flange with concavo-convex mode structure, 7, wherein flanging die 7 with draw punch 1 and be consistent in the shaped portion shape, each die is made by its moulding requirement, between the direction of motion of each punch shape and corresponding punch, the correlation between the plane, die hole and the corresponding punch direction of motion should make draws product, the flange product, relation between the depth direction of bulging product and finished product is consistent.
10, as mould as described in the claim 9, it is characterized in that when between drawing direction and the finished product depth direction angle being arranged, punch 1 is drawn in contrast between flanging die 7 shapes and its direction of motion should the angle that equates with this angle value, should the formation value be the angle at this supplementary angle, angle also between the plane, flange hole and flanging die 7 directions of motion.
11, as mould as described in claim 9 or 10, it is characterized in that the shape and the finished product appropriate section of drawing with bulging punch 1,15 top shape or top and near region thereof are in full accord.
12,, it is characterized in that two slit bamboo or chopped wood dies 9 link through the drive disk assembly 11 of inclined plane slide block transmission 10-12 and bloated pattern bed respectively in the expanding die, and flexible resetting-mechanism 13 links two slit bamboo or chopped wood dies respectively with mould bases 14 as claim 9 or 10 described moulds.
13, mould as claimed in claim 11 is characterized in that two slit bamboo or chopped wood dies 9 link through the drive disk assembly 11 of inclined plane slide block transmission 10-12 and bloated pattern bed respectively in the expanding die, and flexible resetting-mechanism 13 links two slit bamboo or chopped wood dies respectively with mould bases 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108445 CN1020420C (en) | 1989-11-06 | 1989-11-06 | Monolithic shaping method and die set for supper-deep thin shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108445 CN1020420C (en) | 1989-11-06 | 1989-11-06 | Monolithic shaping method and die set for supper-deep thin shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042099A true CN1042099A (en) | 1990-05-16 |
| CN1020420C CN1020420C (en) | 1993-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108445 Expired - Fee Related CN1020420C (en) | 1989-11-06 | 1989-11-06 | Monolithic shaping method and die set for supper-deep thin shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020420C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758148A (en) * | 2008-11-28 | 2010-06-30 | 蒂森克虏伯钢铁欧洲股份公司 | Method and device for producing highly dimensionally accurate flanged half shells |
| CN101920285A (en) * | 2010-06-08 | 2010-12-22 | 东莞市旗丰消声器有限公司 | Process method for once drawing and forming semi-shell workpiece of oil tank |
| CN105195590A (en) * | 2015-09-25 | 2015-12-30 | 浙江方圆机电设备制造有限公司 | Oil pan machining method |
| CN106334755A (en) * | 2016-09-13 | 2017-01-18 | 中国电子科技集团公司第四十八研究所 | Grating plate forming die |
| CN107199283A (en) * | 2016-03-17 | 2017-09-26 | 本田技研工业株式会社 | Manufacturing process and its device |
-
1989
- 1989-11-06 CN CN 89108445 patent/CN1020420C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758148A (en) * | 2008-11-28 | 2010-06-30 | 蒂森克虏伯钢铁欧洲股份公司 | Method and device for producing highly dimensionally accurate flanged half shells |
| US8522593B2 (en) | 2008-11-28 | 2013-09-03 | Thyssenkrupp Steel Europe Ag | Method and device for producing highly dimensionally accurate flanged half shells |
| CN101758148B (en) * | 2008-11-28 | 2015-04-29 | 蒂森克虏伯钢铁欧洲股份公司 | Method and device for producing highly dimensionally accurate flanged half shells |
| CN101920285A (en) * | 2010-06-08 | 2010-12-22 | 东莞市旗丰消声器有限公司 | Process method for once drawing and forming semi-shell workpiece of oil tank |
| CN101920285B (en) * | 2010-06-08 | 2012-05-23 | 东莞市旗丰消声器有限公司 | One-step deep drawing forming process method for oil tank half-shell workpiece |
| CN105195590A (en) * | 2015-09-25 | 2015-12-30 | 浙江方圆机电设备制造有限公司 | Oil pan machining method |
| CN106563721A (en) * | 2015-09-25 | 2017-04-19 | 浙江方圆机电设备制造有限公司 | Oil pan drawing molding technique |
| CN106583528A (en) * | 2015-09-25 | 2017-04-26 | 浙江方圆机电设备制造有限公司 | Internal expanding pressure molding method for oil pan |
| CN107199283A (en) * | 2016-03-17 | 2017-09-26 | 本田技研工业株式会社 | Manufacturing process and its device |
| CN106334755A (en) * | 2016-09-13 | 2017-01-18 | 中国电子科技集团公司第四十八研究所 | Grating plate forming die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020420C (en) | 1993-05-05 |
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