CN108817200A - Improve the processing method and application of hole expansibility - Google Patents
Improve the processing method and application of hole expansibility Download PDFInfo
- Publication number
- CN108817200A CN108817200A CN201810643076.4A CN201810643076A CN108817200A CN 108817200 A CN108817200 A CN 108817200A CN 201810643076 A CN201810643076 A CN 201810643076A CN 108817200 A CN108817200 A CN 108817200A
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- Prior art keywords
- diameter
- punch
- pin
- cavity plate
- processing method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Abstract
The processing method and application provided by the invention for improving hole expansibility, is related to reaming processing technique field.A kind of processing method improving hole expansibility, including：The diameter in hole to be processed is A, and diameter is selected to carry out first time punching processing for the first punch-pin of (A- Ф 0.60)~(A- Ф 0.56) mm, the first cavity plate that diameter is (A- Ф 0.36)~(A- Ф 0.32) mm.It selects diameter to carry out second of reaming punch press process for the second punch-pin of A, the second cavity plate that diameter is (A+0.03)~(A+0.07) mm, the notch that first time punching is formed is processed as smooth kerf.The processing method simple process, controllability is strong, processes available smooth notch section to high strength steel.
Description
Technical field
The present invention relates to reaming processing technique fields, and in particular to improve the processing method and application of hole expansibility.
Background technique
It has been an inevitable project to solve the lightweight of the continuation of the journey problem, car body of new-energy automobile.Cold
Calendering high strength steel (generally refers to tensile strength to be able to maintain very the steel of 580MPa or more is in the case where very thin
High intensity.) light-weighted simultaneously in realization, moreover it is possible to guarantee its safety.
During processing vehicle body, in order to install screw, and further realizing lightweight can be to plate porous processing.
And the processing of this some holes is generally mechanical punching.In general the cut sides of punch press process are preferably smooth section.It is high-intensitive
The low property of steel ductility, processing difficulties, in addition high strength steel compare with general mild steel, and mouldability is very low, especially as reaming
Processing is processed for the second time like that will lead to section rupture, reduce material mouldability.
Summary of the invention
The purpose of the present invention is to provide it is a kind of improve hole expansibility processing method, the processing method simple process, controllably
Property is strong, processes available smooth notch section to high strength steel.
Another object of the present invention is to provide the processing method of above-mentioned improvement hole expansibility answering in automobile production processing
With.
The present invention solves its technical problem and adopts the following technical solutions to realize：
A kind of processing method improving hole expansibility, including：
The diameter in hole to be processed is A, selects the diameter to be for the first punch-pin, the diameter of (A- Ф 0.60)~(A- Ф 0.56) mm
The first cavity plate of (A- Ф 0.36)~(A- Ф 0.32) mm carries out first time punching processing.
Diameter is selected to carry out second for the second punch-pin of A, the second cavity plate that diameter is (A+0.03)~(A+0.07) mm
The notch that first time punching is formed is processed as smooth kerf by reaming punch press process.
Application of the processing method of above-mentioned improvement hole expansibility in automobile production processing.
The processing method of improvement hole expansibility and the beneficial effect of application of the embodiment of the present invention be：
The present invention is using reaming method twice, in first time punching processing, selects suitable first cavity plate in aperture
Reaming punching is carried out with the first punch-pin, the cut sides after processing under certain technique are uneven.Then it is suitable in selection aperture
The second cavity plate and second smear and second of reaming punching is carried out to the cut sides so that cut sides are smoothly neat obtain technique
Up-to-standard hole.In the processing method, the cavity plate of the punching of reaming each time and the size of punch-pin are particularly important.Due to processing
Steel strength it is high, ductility is low, has important association between the technological parameter of the punching of reaming twice.The processing method improves
Damage of the high-intensitive steel when reaming is processed, improves reaming working modulus, improves the mouldability of high strength steel.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range.It for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is processing structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 is hole expansibility figure provided by the invention；
Fig. 3 is micro-structure diagram provided by the invention.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
The processing method to the improvement hole expansibility of the embodiment of the present invention and application are specifically described below.
A kind of processing method improving hole expansibility provided in an embodiment of the present invention, including：
Fig. 1 is please referred to, plate to be processed is chosen, is positioned between the first cavity plate and pressing plate.Pressing plate is arranged under
Side, the first cavity plate are disposed over.Plate is punched out from bottom to up using the first punch-pin.It, will be above-mentioned after first time punching
Plate is placed between the second cavity plate and pressing plate.Pressing plate is arranged below, and the second cavity plate is disposed over.Using the second punch-pin from
Under supreme reaming processing and punching are carried out to plate.
In embodiments of the present invention, plate to be processed is mainly high-intensitive steel.Since high-intensitive steel extend
Property low, processing difficulties at novel very low, therefore be easy to cause section to rupture in processing and compared with mild steel.The present invention mentions
The method of confession selects aperture to close to improve damage of the high-intensitive steel in reaming processing in first time punching processing
The first suitable cavity plate and the first punch-pin carry out reaming punching, and the cut sides after processing under certain technique are uneven.Then exist
The second cavity plate for selecting aperture suitable and second is smeared to the cut sides second of reaming punching of progress, so that cut sides are smoothly whole
Together, the hole of processing quality qualification is obtained.The processing method improves reaming working modulus, improves the mouldability of high strength steel.
In the processing method, the cavity plate of the punching of reaming each time and the size of punch-pin are particularly important.Due to the steel of processing
Material intensity is high, and ductility is low, has important association between the technological parameter of the punching of reaming twice.Specifically, hole to be processed
Diameter is A, and selecting diameter is the first punch-pin of (A- Ф 0.60)~(A- Ф 0.56) mm into being (A- Ф 0.36)~(A- with diameter
Ф 0.32) mm the first cavity plate, using press machine, moulding pressure be 440~460KN, process velocity be 70~80spm plus
Work range is 195~255mm, pressurization overall length carries out first time punching processing under conditions of being 100mm.
After first time punching processing, hole is machined on plate.But the cut sides in the hole are uneven, need to continue to add
Work.But when second of processing, the section of high-intensitive steel easily ruptures, therefore the technological parameter setting of second of processing is outstanding
It is important.The second cavity plate that diameter is (A+0.03)~(A+0.07) mm for the second punch-pin and diameter of A is selected, using pressure
Power machine, moulding pressure is 440~460KN, process velocity is 70~80spm, the range of work be 195~255mm, pressurization overall length
To carry out second of reaming punch press process under conditions of 100mm.
Further, in the present invention preferably embodiment, the diameter of the first punch-pin is (A- Ф 0.59)~(A- Ф
0.57) mm, the diameter of the first cavity plate are (A- Ф 0.35)~(A- Ф 0.33) mm；The diameter of second cavity plate is (A+0.04)~(A
+0.06)mm.Moulding pressure is 445~455KN, process velocity is 72~78spm, the range of work is 210~240mm, pressurization is complete
A length of 100mm.
Further, in the present invention preferably embodiment, the diameter of the first punch-pin is (A- Ф 0.58) mm, the first cavity plate
Diameter be (A- Ф 0.34) mm；The diameter of second cavity plate is (A+0.05) mm.In the present invention, the diameter of the first punch-pin is the
The outer diameter of one punch-pin, the diameter of the second punch-pin are the outer diameter of the second punch-pin；The diameter of first cavity plate is the internal diameter of the first cavity plate, the
The diameter of two cavity plates is the internal diameter of the second cavity plate.
The processing method provided by the invention for improving hole expansibility has the reaming processing of high-intensitive steel preferable
Processing effect improves reaming working modulus, improves the mouldability of high strength steel, can be applied in automobile production processing.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of processing method for improving hole expansibility is present embodiments provided, including：
The diameter in hole to be processed is 10mm, select diameter for 10mm the first punch-pin into diameter is 10.24mm first
Cavity plate.1200MPa grade high-strength steel plate to be processed is chosen, is positioned between the first cavity plate and pressing plate.Pressing plate setting exists
Lower section, the first cavity plate are disposed over.Plate is punched out from bottom to up using the first punch-pin.Wherein, moulding pressure is
450KN, process velocity 75spm, the range of work are 195~255mm, pressurization overall length is 100mm.
Embodiment 2
A kind of processing method for improving hole expansibility is present embodiments provided, including：
The diameter in hole to be processed is 10mm, select diameter for 9.81mm the first punch-pin into diameter is 10.05mm the
One cavity plate.1200MPa grade high-strength steel plate to be processed is chosen, is positioned between the first cavity plate and pressing plate.Pressing plate setting
In lower section, the first cavity plate is disposed over.Plate is punched out from bottom to up using the first punch-pin.Wherein, moulding pressure is
450KN, process velocity 75spm, the range of work are 195~255mm, pressurization overall length is 100mm.
The second cavity plate for selecting diameter to be 10.05mm for the second punch-pin and diameter of 10mm, above-mentioned plate is placed
Between the second cavity plate and pressing plate.Pressing plate is arranged below, and the second cavity plate is disposed over.It is right from bottom to up using the second punch-pin
Plate carries out reaming processing and punching.Wherein, moulding pressure 450KN, process velocity 75spm, the range of work be 195~
255mm, pressurization overall length are 100mm.
Embodiment 3
A kind of processing method for improving hole expansibility is present embodiments provided, including：
The diameter in hole to be processed is 10mm, select diameter for 9.76mm the first punch-pin into that diameter is 10mm is first recessed
Mould.1200MPa grade high-strength steel plate to be processed is chosen, is positioned between the first cavity plate and pressing plate.Pressing plate is arranged under
Side, the first cavity plate are disposed over.Plate is punched out from bottom to up using the first punch-pin.Wherein, moulding pressure is
450KN, process velocity 75spm, the range of work are 195~255mm, pressurization overall length is 100mm.
The second cavity plate for selecting diameter to be 10.05mm for the second punch-pin and diameter of 10mm, above-mentioned plate is placed
Between the second cavity plate and pressing plate.Pressing plate is arranged below, and the second cavity plate is disposed over.It is right from bottom to up using the second punch-pin
Plate carries out reaming processing and punching.Wherein, moulding pressure 450KN, process velocity 75spm, the range of work be 195~
255mm, pressurization overall length are 100mm.
Embodiment 4
A kind of processing method for improving hole expansibility is present embodiments provided, including：
The diameter in hole to be processed is 10mm, select diameter for 9.66mm the first punch-pin into diameter is 9.9mm first
Cavity plate.1200MPa grade high-strength steel plate to be processed is chosen, is positioned between the first cavity plate and pressing plate.Pressing plate setting exists
Lower section, the first cavity plate are disposed over.Plate is punched out from bottom to up using the first punch-pin.Wherein, moulding pressure is
450KN, process velocity 75spm, the range of work are 195~255mm, pressurization overall length is 100mm.
The second cavity plate for selecting diameter to be 10.05mm for the second punch-pin and diameter of 10mm, above-mentioned plate is placed
Between the second cavity plate and pressing plate.Pressing plate is arranged below, and the second cavity plate is disposed over.It is right from bottom to up using the second punch-pin
Plate carries out reaming processing and punching.Wherein, moulding pressure 450KN, process velocity 75spm, the range of work be 195~
255mm, pressurization overall length are 100mm.
Comparative example 1
This comparative example carries out hole machined to 1200MPa grade high-strength steel plate using existing cutting working method.
1200MPa grade high-strength steel plate in 1~embodiment of embodiment 4 and comparative example 1 is same production batch
Steel carry out process machinery Characteristics Detection to the steel, as a result such as following table：
1 mechanical property testing result of table
Hole expansibility, hole expansibility are measured to hole made from Examples 1 to 4, comparative example 1Its
In, d is critical aperture, d1For the initial diameter in hole.Test specimen is pressed into cavity plate using punch-pin, expands the pre-manufactured hole of test specimen constantly
Greatly, when material starts to occur constriction or breach near the edge in hole or hole, stop test, using aperture at this time as critical hole
Diameter.As a result such as Fig. 2, wherein punching processing corresponding embodiment 1, obtained value 0.095mm corresponding embodiment 2,0.12mm pairs of obtained value
Embodiment 3 is answered, obtained value 0.17mm corresponding embodiment 4, machining corresponds to comparative example 1.As shown in Figure 2, embodiment 2~4
Hole expansibility is close with the hole expansibility of machining, compares embodiment 1, illustrates the processing for the improvement hole expansibility that embodiment 2~4 uses
Hole expansibility can be improved in method.
The aperture for choosing embodiment 2~4, comparative example 1, carries out microscopic appearance detection to it, as a result such as Fig. 3.It can by Fig. 3
Know, compared to the machining of comparative example 1, the surface of embodiment 2~4 is more smooth, illustrates adding for the improvement hole expansibility that it is used
The hole quality that work method obtains is higher.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of processing method for improving hole expansibility, which is characterized in that including：
The diameter in hole to be processed is A, and selecting diameter for the first punch-pin, the diameter of (A- Ф 0.60)~(A- Ф 0.56) mm is (A-
Ф 0.36)~(A- Ф 0.32) mm the first cavity plate carry out first time punching processing；
Diameter is selected to carry out second of reaming for the second punch-pin of A, the second cavity plate that diameter is (A+0.03)~(A+0.07) mm
The notch that first time punching is formed is processed as smooth kerf by punch press process.
2. the processing method according to claim 1 for improving hole expansibility, which is characterized in that the diameter of first punch-pin is
(A- Ф 0.59)~(A- Ф 0.57) mm, the diameter of first cavity plate are (A- Ф 0.35)~(A- Ф 0.33) mm；Described
The diameter of two cavity plates is (A+0.04)~(A+0.06) mm.
3. it is according to claim 1 or 2 improve hole expansibility processing method, which is characterized in that first punch-pin it is straight
Diameter is (A- Ф 0.58) mm, and the diameter of first cavity plate is (A- Ф 0.34) mm；The diameter of second cavity plate is (A+
0.05)mm。
4. the processing method according to claim 1 for improving hole expansibility, which is characterized in that the diameter of first punch-pin is
The outer diameter of first punch-pin, the diameter of second punch-pin are the outer diameter of second punch-pin.
5. the processing method according to claim 1 for improving hole expansibility, which is characterized in that the diameter of first cavity plate is
The internal diameter of first cavity plate, the diameter of second cavity plate are the internal diameter of second cavity plate.
6. the processing method according to claim 1 for improving hole expansibility, which is characterized in that the moulding pressure of first time punching
For 440~460KN.
7. the processing method of improvement hole expansibility according to claim 1 or 6, which is characterized in that the processing of first time punching
Speed is 70~80spm.
8. the processing method according to claim 1 for improving hole expansibility, which is characterized in that the range of work of first time punching
For 195~255mm.
9. the processing method according to claim 1 for improving hole expansibility, which is characterized in that further include：By plate to be processed
Material is set between cavity plate and pressing plate, carries out reaming punching to the plate along the pressing plate to the direction of the cavity plate using punch-pin
It cuts out.
10. application of the processing method of the improvement hole expansibility as described in claim 1 to 9 in automobile production processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643076.4A CN108817200B (en) | 2018-06-21 | 2018-06-21 | Processing method for improving hole expansion rate and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643076.4A CN108817200B (en) | 2018-06-21 | 2018-06-21 | Processing method for improving hole expansion rate and application |
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| Publication Number | Publication Date |
|---|---|
| CN108817200A true CN108817200A (en) | 2018-11-16 |
| CN108817200B CN108817200B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810643076.4A Active CN108817200B (en) | 2018-06-21 | 2018-06-21 | Processing method for improving hole expansion rate and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020145063A1 (en) * | 2019-01-09 | 2020-07-16 | Ｊｆｅスチール株式会社 | Metal plate shear processing method and pressed component production method |
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| CN101347804A (en) * | 2008-09-02 | 2009-01-21 | 铁道部运输局 | Hole-punching method of M6 nut press mounting hole of multiple unit at 300 kilometer per hour |
| CN202316751U (en) * | 2011-11-23 | 2012-07-11 | 中国重汽集团济南动力有限公司 | Fine blanking mould for thick plate |
| CN102950190A (en) * | 2011-08-25 | 2013-03-06 | 江苏银河电子股份有限公司 | Production method of sheet metal parts |
| US20180043412A1 (en) * | 2015-03-11 | 2018-02-15 | Nippon Steel & Sumitomo Metal Corporation | Burring processing method |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347804A (en) * | 2008-09-02 | 2009-01-21 | 铁道部运输局 | Hole-punching method of M6 nut press mounting hole of multiple unit at 300 kilometer per hour |
| CN102950190A (en) * | 2011-08-25 | 2013-03-06 | 江苏银河电子股份有限公司 | Production method of sheet metal parts |
| CN202316751U (en) * | 2011-11-23 | 2012-07-11 | 中国重汽集团济南动力有限公司 | Fine blanking mould for thick plate |
| US20180043412A1 (en) * | 2015-03-11 | 2018-02-15 | Nippon Steel & Sumitomo Metal Corporation | Burring processing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020145063A1 (en) * | 2019-01-09 | 2020-07-16 | Ｊｆｅスチール株式会社 | Metal plate shear processing method and pressed component production method |
| JPWO2020145063A1 (en) * | 2019-01-09 | 2021-11-04 | Ｊｆｅスチール株式会社 | Shearing method of metal plate and manufacturing method of pressed parts |
| JP7188457B2 (en) | 2019-01-09 | 2022-12-13 | Ｊｆｅスチール株式会社 | METHOD FOR SHEARING METAL PLATE AND METHOD FOR MANUFACTURING PRESS PARTS |
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| CN108817200B (en) | 2020-10-02 |
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Effective date of registration: 20200727 Address after: 215024 local plant area on the first floor of workshop 17, gangtian industrial square, 99 gangtian Road, Suzhou Industrial Park, Suzhou, Jiangsu Province Applicant after: Suzhou Zhenzhi Jinggong Technology Co., Ltd Address before: 214000 Wuxi City, Jiangsu Province, West Road 30-1 Applicant before: WUXI ZHEN ZHI JING GONG TECHNOLOGY Co.,Ltd. |
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