CN103801619A - Drawing die and punching method of covering part - Google Patents
Drawing die and punching method of covering part Download PDFInfo
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- CN103801619A CN103801619A CN201210452224.7A CN201210452224A CN103801619A CN 103801619 A CN103801619 A CN 103801619A CN 201210452224 A CN201210452224 A CN 201210452224A CN 103801619 A CN103801619 A CN 103801619A
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Abstract
The invention discloses a drawing die. The drawing die comprises a drawing male die (10) and a drawing female die (20), wherein one of the drawing male die and the drawing female die is provided with a flanging punch (11), and a flanging hole (21) which is matched with the flanging punch (11) is formed on the other one of the drawing male die and the drawing female die. In addition, the invention also discloses a punching method of a covering part. The punching method comprises a drawing process and a trimming process after the drawing process, wherein a positioning structure can be formed by blank (1) of the covering part in or after the drawing process, the positioning structure is used for positioning the blank (1) in the trimming process, preferably, a flanging part (2) is formed by turning over the blank (1) through the drawing die, and the flanging part (2) is the positioning structure. According to the drawing die and the punching method of the covering part, which are disclosed by the invention, the flanging part (2) can be formed by the blank (1) through the drawing die, the flanging part (2) can be used for accurately positioning in the trimming process, and the product qualified rate is increased.
Description
Technical field
The present invention relates to punching press field, particularly, relate to the process for stamping of a kind of drawing die and a covering.
Background technology
Automobile body covering piece, in the time of deburring, generally adopts location-plate to carry out coarse localization, relies on the shape face of product self accurately to locate simultaneously.
But some form compares are shallow and the body outer panel of fairing (for example, front and back door outside plate, top cover, hood outside plate etc.) in the time of deburring, tend to because drawing after make moulding more shallow, cause body outer panel to can not get good accurate location.Thereby after deburring completes, make the qualification rate of body outer panel not reach expection requirement, the quality of product can not be guaranteed.
Summary of the invention
The object of this invention is to provide a kind of drawing die, this drawing die can make blank form turn-up portion in drawing operation, for the location in the stamping procedure after drawing operation.
To achieve these goals, the invention provides a kind of drawing die, this drawing die comprises drawing punch and drawing die, wherein, in the one of described drawing punch and drawing die, flange drift is installed, in another one, is formed with the flanging bore coordinating with described flange drift.
Preferably, described flange drift is arranged on described drawing punch, described flanging bore is formed on described drawing die, described flange drift comprises installation portion and the flange operate portions of one, described installation portion is arranged on described drawing punch, and a side of described flange operate portions end is formed with notch part.
Preferably, on described drawing die, limited block is installed, the periphery of described flange operate portions is formed with flat face, this flat face is formed on the opposite side relative with described notch part of described flange operate portions, and described limited block matches with described flat face, to limit the motion of described flange drift towards described limited block.
Preferably, the diameter of described flanging bore is the diameter of described flange drift and the sotck thinkness sum of twice.
Preferably, on described drawing die, be formed with steam vent, this steam vent communicates with described flanging bore.
Preferably, at least two described flange drifts are installed on described drawing die, on described drawing die, are formed with at least two flanging bores that coordinate with described flange drift, and described at least two flange drifts lay respectively at the both sides of described blank.
Another object of the present invention is to provide a kind of process for stamping of covering, and the process for stamping of this covering can improve the qualification rate of product.
In order to realize above-mentioned another object, the invention provides a kind of process for stamping of covering, this process for stamping comprises the trimming process step after drawing operation and drawing operation, wherein, in described drawing operation or make the blank of described covering form location structure after described drawing operation, this location structure is for positioning described blank at described trimming process step.
Preferably, in described drawing operation, use above-described drawing die to carry out flange to form turn-up portion to the blank of described covering, this turn-up portion is described location structure.
Preferably, in described drawing operation, in the time that described drawing die drawing campaign approaches drawing stop, by described flange drift, described blank is carried out to flange to form turn-up portion.
Preferably, the described turn-up portion forming in drawing operation is positioned at the edge of described blank.
Preferably, after completing described drawing operation, carry out trimming process step by Trimming Die, described Trimming Die comprises flange positioner, this flange positioner is fixed on the deburring punch of described Trimming Die, in described trimming process step, described flange positioner matches with described turn-up portion, so that described blank is positioned.
Preferably, described flange positioner is positioned at the outside, edge of described blank, and comprises installed part and be fixed on the keeper on this installed part, and described installed part is fixed on described deburring punch, described keeper matches with described turn-up portion, positions with the blank to described covering.
Preferably, described Trimming Die comprises edge auxiliary locator, this edge auxiliary locator is fixed on the deburring punch of described Trimming Die, in described trimming process step, described edge auxiliary locator supports the edge of described blank, so that described blank is located first, described flange positioner is for again locating described blank.
The present invention makes blank form turn-up portion by drawing die, for accurate location in trimming process step, thereby has improved the qualification rate of product.
Other features and advantages of the present invention are described in detail the specific embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with the specific embodiment one below.In the accompanying drawings:
Fig. 1 is the schematic cross-section of the structure of drawing die in the present invention;
Fig. 2 is the plane of the part-structure of drawing punch in the present invention;
Fig. 3 is the plane of the part-structure of drawing die in the present invention;
Fig. 4 a and Fig. 4 b are respectively side view and the top views of flange drift in the present invention;
Fig. 5 is the structural representation that completes blank after drawing operation in the present invention;
Fig. 6 is the structural representation of flange positioner to blank location in trimming process step of the present invention;
Fig. 7 is the structural representation of flange positioner in the present invention.
Description of reference numerals
1 blank 2 turn-up portion
10 drawing punch 11 flange drifts
20 drawing die 21 flanging bores
22 limited block 23 steam vents
31 flange positioner 32 installed parts
33 keeper 34 edge auxiliary locators
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use typically refers to the upper and lower, left and right in accompanying drawing as " upper and lower, left and right ".
The present invention comprises the situation of multiple operations mainly for the punching course of punch forming part, especially, for the covering of vehicle body in vehicle, more specifically for outer covering piece, still, the device and the process for stamping that in the present invention, relate to are not limited to this.As an example of body outer skin example, present invention is described below.
As known to those skilled in the art, the forming process of body outer skin comprises drawing operation (drawing sequence), trimming process step and overturning process conventionally successively.But after drawing operation, the moulding of body outer skin is shallow and edge-light is suitable, causes can not accurately locating in the trimming process step of body outer skin below, thereby the qualification rate of body outer skin is reduced.
For this reason, the present invention relates generally to a kind of drawing die, and this drawing die mainly comprises drawing punch 10 and drawing die 20.Drawing punch 10 and drawing die 20 can be arranged on respectively in upper bolster (not shown) and die shoe (not shown), or on the contrary, drawing punch 10 and drawing die 20 can be arranged on respectively on die shoe and upper bolster.
Be different from prior art, the present invention is also provided with flange drift 11 in the one in drawing punch 10 and drawing die 20, is formed with the flanging bore 21 coordinating with flange drift 11 in another one.Be in a kind of embodiment, can flange drift 11 be installed on drawing punch 10, on drawing die 20, form flanging bore 21, or, in another kind of embodiment, flange drift 11 is installed on drawing die 20, on drawing punch 10, form flanging bore 21.
Referring to the specific embodiment shown in Fig. 1 to Fig. 5.The present invention is specifically arranged on flange drift 11 on drawing punch 10, and flanging bore 21 is formed on drawing die 20 simultaneously.Be appreciated that, by using this drawing die to carry out after drawing and moulding body outer skin blank 1, on blank 1, be formed with the turn-up portion 2 for locating, in trimming process step below, blank 1 can accurately be located by turn-up portion 2, has improved the product percent of pass of body outer skin.
Referring to Fig. 4 a and Fig. 4 b, flange drift 11 comprises installation portion 11a and the flange operate portions 11b of one, and installation portion 11a and flange operate portions 11b are all roughly cylindric, and installation portion 11a has the slightly large diameter than flange operate portions 11b.Wherein, installation portion 11a is arranged on drawing punch 10, and particularly, installation portion 11a is fixed on drawing punch 10 by fixed head (not indicating).Can be the various structures of knowing about fixed head, thereby no longer be described in detail.For flange operate portions 11b, a side of its end is formed with notch part 11c, during with flange in drawing operation, can dodge drawing die 20, can form the turn-up portion 2 of circular arc simultaneously.The concrete size of described notch part 11c can determine according to the size of the required turn-up portion 2 of reality, and the present invention does not specifically limit this.
Can find out according to the structure of above-mentioned flange drift 11, owing to there being notch part 11c, in the time that flange drift 11 is worked, flange drift 11 is easily towards the opposite side motion relative with notch part 11c, produces side force thus and affects the formation of turn-up portion 2.
In order to prevent the generation of above-mentioned side force, the present invention is provided with limited block 22 on drawing die 20, and particularly, this limited block 22 is fixed on drawing die 20 by securing members such as bolts.The periphery of flange operate portions 11b is formed with flat face 11d simultaneously, and this flat face 11d is formed on the opposite side relative with notch part 11c of flange operate portions 11b, like this, match with flat face 11d by limited block 22, thereby can limit the motion of flange drift 11 towards limited block 22.In the turn-up process of drawing operation, flange drift 11 first contacts with limited block 22, and then coordinates and carry out flange with flanging bore 21.
Preferably, the diameter of flanging bore 21 is the diameter of flange drift 11 and the blank of twice 1 thickness sum, to guarantee the size of the turn-up portion 2 forming.
Preferably, be formed with steam vent 23 on drawing die 20, this steam vent 23 communicates with flanging bore 21, so that blank 1 comes off from drawing die 20 after drawing.
In addition, in order more accurately to position, can make at least two flange drifts 11 of installation on drawing die, on drawing die 20, form at least two flanging bores 21 that coordinate with flange drift 11, and at least two flange drifts 11 lay respectively at the both sides of blank 1, to apply power and to position in the both sides of blank 1.Referring to Fig. 5, one preferred embodiment in, can utilize flange drift 11 in the turn-up process of drawing operation, to form two turn-up portion 2 as shown in the figure, these two turn-up portion 2 are roughly positioned at cornerwise two ends of blank 1, this formation position of two turn-up portion 2 during mainly according to drawing blank amount of flow determine compared with the accuracy of little and operation location below.
On the basis of above-described drawing die, the present invention relates to a kind of process for stamping of covering.Described covering refers to the outer covering piece of vehicle body especially, such as front and back door outside plate, top cover, hood outside plate etc.The process for stamping of described covering comprises drawing operation.In drawing operation, use above-described drawing die to carry out flange to form turn-up portion 2 to the blank 1 of covering.
Particularly, in drawing operation, in the time that drawing die drawing campaign approaches drawing stop, by the flange drift 11 of installing on drawing die, blank 1 is carried out to flange.Particularly, flange drift 11 first contacts with limited block 22, and then coordinates and carry out flange with flanging bore 21.Be appreciated that when drawing operation completes, the turn-up process that forms turn-up portion 2 also completes.
Wherein, the turn-up portion 2 forming in drawing operation is positioned at the edge of blank 1.According to the layout of above-mentioned at least two flange drifts 11, the preferred both sides that are positioned at blank 1 of two turn-up portion 2 of formation, so that accurately locate in deburring process below.
And then, process for stamping also comprises trimming process step, and this trimming process step is undertaken by Trimming Die after completing drawing operation.Same as the prior art, Trimming Die comprises deburring punch (not shown) and deburring die (not shown), and Trimming Die also should be provided for the structure of location on deburring punch or deburring die.
Referring to Fig. 6 and Fig. 7, in this embodiment, Trimming Die comprises flange positioner 31, this flange positioner 31 is fixed on the deburring punch of Trimming Die, in trimming process step, flange positioner 31 matches with turn-up portion 2, so that blank 1 is positioned.
Particularly, flange positioner 31 is positioned at the outside, edge of blank 1, and comprises installed part 32 and be fixed on the keeper 33 on this installed part 32.Wherein, installed part 32 can and be fixed on deburring punch for plate as shown in the figure, and keeper 33 matches with turn-up portion 2, positions with the blank 1 to covering.Keeper 33 can comprise the fixed block being fixed on installed part 33, stationary positioned bearing pin on fixed block simultaneously, this alignment pin periphery can with the turn-up portion of circular arc 2, and the both sides that flange positioner 31 is located at blank 1 can reach good locating effect.
In addition, Trimming Die can also comprise with prior art in similar edge auxiliary locator 34, this edge auxiliary locator 34 is fixed on the deburring punch of Trimming Die.In trimming process step, edge auxiliary locator 34 supports the edge of blank, and so that blank 1 is located to (coarse localization) first, described flange positioner 31 is for again locating (accurately location) to described blank 1.
After completing, location can carry out deburring to the blank of covering 1.After deburring completes, the turn-up portion 2 of blank 1 will be pruned away, thereby can not affect the final molding of blank 1.After trimming process step, the whole edge of the blank to covering 1 is carried out to flange, finally to form covering.The technology that overturning process after trimming process step is well known to those skilled in the art, thereby repeat no more.
The process for stamping of covering described above is mainly to adopt the drawing die that is different from prior art to carry out drawing operation, thinks that next step trimming process step provides accurate location, thereby improves the qualification rate of product.
Be understandable that, the present invention needs only and in drawing operation or after drawing operation, makes the blank 1 of described covering form location structure, and makes this location structure for blank 1 being positioned at described trimming process step.
Therefore, in another embodiment, can between drawing operation and trimming process step, increase the overturning process that forms above-mentioned turn-up portion 2.Wherein, on the flanging die using in overturning process, can adopt aforesaid flange drift 11 and form corresponding flanging bore 21, to realize the formation of turn-up portion 2.Certainly, also can adopt other similar flanging dies to carry out flange, the present invention does not limit this.After this overturning process, carry out again trimming process step, with the flanging bore 21 that prunes away, and finally carry out the overall flange at final blank 1 edge.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a drawing die, this drawing die comprises drawing punch (10) and drawing die (20), it is characterized in that, flange drift (11) is installed in the one of described drawing punch (10) and drawing die (20), in another one, is formed with the flanging bore (21) coordinating with described flange drift (11).
2. drawing die according to claim 1, it is characterized in that, described flange drift (11) is arranged on described drawing punch (10), described flanging bore (21) is formed on described drawing die (20), described flange drift (11) comprises installation portion (11a) and the flange operate portions (11b) of one, it is upper that described installation portion (11a) is arranged on described drawing punch (10), and a side of described flange operate portions (11b) end is formed with notch part (11c).
3. drawing die according to claim 2, it is characterized in that, limited block (22) is installed on described drawing die (20), the periphery of described flange operate portions (11b) is formed with flat face (11d), this flat face (11d) is formed on the opposite side relative with described notch part (11c) of described flange operate portions (11b), and described limited block (22) matches with described flat face (11d), to limit the motion of described flange drift (11) towards described limited block (22).
4. drawing die according to claim 1, is characterized in that, the diameter of described flanging bore (21) is the diameter of described flange drift (11) and blank (1) the thickness sum of twice.
5. drawing die according to claim 1, is characterized in that, is formed with steam vent (23) on described drawing die (20), and this steam vent (23) communicates with described flanging bore (21).
6. according to the drawing die described in any one in claim 1 to 5, it is characterized in that, at least two described flange drifts (11) are installed on described drawing die, on described drawing die (20), be formed with at least two flanging bores (21) that coordinate with described flange drift (11), and described at least two flange drifts (11) lay respectively at the both sides of described blank (1).
7. the process for stamping of a covering, this process for stamping comprises the trimming process step after drawing operation and drawing operation, it is characterized in that, in described drawing operation or make the blank (1) of described covering form location structure after described drawing operation, this location structure is for positioning described blank (1) at described trimming process step.
8. the process for stamping of covering according to claim 7, it is characterized in that, in described drawing operation, use according to the drawing die described in any one in claim 1 to 6 described blank (1) is carried out to flange to form turn-up portion (2), this turn-up portion (2) is described location structure.
9. the process for stamping of covering according to claim 8, it is characterized in that, in described drawing operation, in the time that described drawing die drawing campaign approaches drawing stop, by described flange drift (11), described blank (1) is carried out to flange to form turn-up portion (2).
10. the process for stamping of covering according to claim 8, is characterized in that, the described turn-up portion (2) forming in drawing operation is positioned at the edge of described blank (1).
The process for stamping of 11. coverings according to claim 8, it is characterized in that, after completing described drawing operation, carry out trimming process step by Trimming Die, described Trimming Die comprises flange positioner (31), this flange positioner (31) is fixed on the deburring punch of described Trimming Die, in described trimming process step, described flange positioner (31) matches with described turn-up portion (2), so that described blank (1) is positioned.
The process for stamping of 12. coverings according to claim 11, it is characterized in that, described flange positioner (31) is positioned at the outside, edge of described blank (1), and comprise installed part (32) and be fixed on the keeper (33) on this installed part (32), described installed part (32) is fixed on described deburring punch, described keeper (33) matches with described turn-up portion (2), positions with the blank to described covering (1).
The process for stamping of 13. coverings according to claim 12, it is characterized in that, described Trimming Die comprises edge auxiliary locator (34), this edge auxiliary locator (34) is fixed on the deburring punch of described Trimming Die, in described trimming process step, described edge auxiliary locator (34) supports the edge of described blank, and so that described blank (1) is located first, described flange positioner (31) is for again locating described blank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452224.7A CN103801619B (en) | 2012-11-12 | 2012-11-12 | The process for stamping of drawing die and covering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452224.7A CN103801619B (en) | 2012-11-12 | 2012-11-12 | The process for stamping of drawing die and covering |
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| CN103801619A true CN103801619A (en) | 2014-05-21 |
| CN103801619B CN103801619B (en) | 2015-12-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105382126A (en) * | 2015-12-21 | 2016-03-09 | 安徽江淮汽车股份有限公司 | Stamping and molding process of automobile roof covers and stamping die |
| CN105398066A (en) * | 2015-12-09 | 2016-03-16 | 四川集成天元模具制造有限公司 | Novel process for stamping double-layer heat insulation cushion of car |
| CN106001257A (en) * | 2016-06-15 | 2016-10-12 | 东风模具冲压技术有限公司 | Positioning and stamping machining method for high-strength steel plate component |
| CN106270167A (en) * | 2015-06-29 | 2017-01-04 | 福特汽车公司 | For the tool and method by prototype part drawing and flange |
| CN107931479A (en) * | 2017-11-03 | 2018-04-20 | 江苏嘉和热系统股份有限公司 | A kind of manufacture method of main slice of radiator |
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| CN106270167A (en) * | 2015-06-29 | 2017-01-04 | 福特汽车公司 | For the tool and method by prototype part drawing and flange |
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| CN105398066A (en) * | 2015-12-09 | 2016-03-16 | 四川集成天元模具制造有限公司 | Novel process for stamping double-layer heat insulation cushion of car |
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| CN106001257A (en) * | 2016-06-15 | 2016-10-12 | 东风模具冲压技术有限公司 | Positioning and stamping machining method for high-strength steel plate component |
| CN107931479A (en) * | 2017-11-03 | 2018-04-20 | 江苏嘉和热系统股份有限公司 | A kind of manufacture method of main slice of radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103801619B (en) | 2015-12-16 |
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