CN106424282A - Steel plate punching process utilizing gradient temperature difference based punch forming - Google Patents
Steel plate punching process utilizing gradient temperature difference based punch forming Download PDFInfo
- Publication number
- CN106424282A CN106424282A CN201611150367.7A CN201611150367A CN106424282A CN 106424282 A CN106424282 A CN 106424282A CN 201611150367 A CN201611150367 A CN 201611150367A CN 106424282 A CN106424282 A CN 106424282A
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- CN
- China
- Prior art keywords
- punch
- die
- punching press
- sheet material
- temperature difference
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a steel plate punching process utilizing the gradient temperature difference based punch forming. Punching performance of magnesium alloy is improved by separately controlling temperature of a male die while cooling workpieces by a uniform cooling method. The steel plate punching process has the advantages that since the punching performance of the magnesium alloy is improved by separately controlling temperature of the male die, dimension stability of punch workpieces is guaranteed, the limited drawing ratio of the steel punch workpieces is increased, and thickness of the punch workpieces is more uniform; besides, after press forming, the male die and a female die are cooled by a uniform cooing method when the male die and the female die are kept in a pressing state, so that deformation of the workpieces easily caused by ununiform cooling rate during forming is avoided, and dimension stability of the punch workpieces is improved.
Description
Technical field
The invention belongs to stamping technology field, utilize the stamping forming steel panel punching press of the gradient temperature difference particularly to a kind of
Technique.
Background technology
In machining Sheet Metal Forming Technology field, the punch forming for alloy in lightweight such as steel plates is generally struck out using isothermal
Type and differential temperature punch forming, wherein adopt isothermal punch forming, can significantly improve the plastic deformation ability of the alloy in lightweight such as steel plate
Power, improves punch forming performance, but easily occurs compressing because speed when cooling is uneven in forming process
Workpiece deform upon, thus the stability of the size of serious shadow stamping parts.
Content of the invention
Instant invention overcomes the deficiencies in the prior art, one kind is provided to utilize the stamping forming steel panel punching press of the gradient temperature difference
Technique, present invention can ensure that the limited drawing ratio of the stability of stamping parts size, raising steel stamping part, and punching can be made
The thickness distribution of casting die is more uniform, and easily sends out because speed when cooling is uneven during avoiding Workpiece shaping
The compressing workpiece of life deforms upon.
For solving above-mentioned technical problem, the present invention employs the following technical solutions：
One kind utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and step is as follows：
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch is contacted with plate surface, heat die
With edge mould makes its temperature all control between 250-300 DEG C, heating punch makes its temperature control between 50-80 DEG C, to recessed
Mould, edge mould and punch carry out preservation and controlling, set up stable thermograde on sheet material；
2) first time punching press, mobile punch carries out punching press to sheet material, and punch displacement is more than or equal to punch-nose angle
Radius, solid punch stop punching press, punch is heated, so that the temperature of punch is heated between 250-300 DEG C, to recessed
Mould, edge mould and punch carry out preservation and controlling, and on sheet material, thermograde is eliminated；
3) carry out second punching press, the mobile punch that continues carries out further punching press to sheet material, until molding；
4) then keep punching press state, reduce simultaneously and with 0.5-3 DEG C/sec of speed, punch, edge mould and die carried out
Cooling, until punch, edge mould and die are 25-30 DEG C；Then move punch, take off the steel plate sheet material of molding.
Further, the temperature control of die described in described step (1), edge mould is at 270 DEG C；Described punch
Temperature control is at 65 DEG C.
Further, the temperature control of punch described in described step (2) is at 270 DEG C.
Further, the cooling rate of die, edge mould and punch described in described step (4) is 1 DEG C/sec.
Compared with prior art, the invention has the beneficial effects as follows：The steel plate punched technique of the present invention is logical in punching course
Cross the punching performance to improve magnesium alloy for the temperature controlling punch step by step, the stability of stamping parts size not only can be ensured, carry
The limited drawing ratio of high steel stamping part, and can make stamping parts thickness distribution more uniform；After the present invention is compressing,
Keep punch and die under compacting state, by the way of uniform decrease in temperature, punch, die are being lowered the temperature, so can keep away
Easily deform upon because speed when cooling is uneven during exempting from Workpiece shaping, thus improve the size of stamping parts
Stability.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.Embodiments of the present invention are including but not limited to following
Embodiment.
[embodiment 1]
One kind utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and step is as follows：
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch is contacted with plate surface, heat die
Its temperature is made all to control at 2500 DEG C with edge mould, heating punch makes its temperature control at 50 DEG C, to die, edge mould and punch
Carry out preservation and controlling, stable thermograde is set up on sheet material；
2) first time punching press, mobile punch carries out punching press to sheet material, and punch displacement is more than or equal to punch-nose angle
Radius, solid punch stop punching press, punch is heated, makes the temperature of punch be heated to 250 DEG C, to die, edge mould
Carry out preservation and controlling with punch, thermograde is eliminated on sheet material；
3) carry out second punching press, the mobile punch that continues carries out further punching press to sheet material, until molding；
4) then keep punching press state, reduce simultaneously and with 0.5 DEG C/sec of speed, punch, edge mould and die dropped
Temperature, until punch, edge mould and die are 25 DEG C；Then move punch, take off the steel plate sheet material of molding.
[embodiment 2]
One kind utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and step is as follows：
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch is contacted with plate surface, heat die
Its temperature is made all to control at 300 DEG C with edge mould, heating punch makes its temperature control at 80 DEG C, to die, edge mould and punch
Carry out preservation and controlling, stable thermograde is set up on sheet material；
2) first time punching press, mobile punch carries out punching press to sheet material, and punch displacement is more than or equal to punch-nose angle
Radius, solid punch stop punching press, punch is heated, makes the temperature of punch be heated to 300 DEG C, to die, edge mould
Carry out preservation and controlling with punch, thermograde is eliminated on sheet material；
3) carry out second punching press, the mobile punch that continues carries out further punching press to sheet material, until molding；
4) then keep punching press state, reduce simultaneously and with 3 DEG C/sec of speed, punch, edge mould and die lowered the temperature,
Until punch, edge mould and die are 30 DEG C；Then move punch, take off the steel plate sheet material of molding.
[embodiment 3]
One kind utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and step is as follows：
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch is contacted with plate surface, heat die
So that its temperature is all controlled at 270 DEG C with edge mould, heating punch make its temperature control between 65 DEG C, to die, edge mould and
Punch carries out preservation and controlling, sets up stable thermograde on sheet material；
2) first time punching press, mobile punch carries out punching press to sheet material, and punch displacement is more than or equal to punch-nose angle
Radius, solid punch stop punching press, punch is heated, so that the temperature of punch is heated between 270 DEG C, to die, pressure
Side mould and punch carry out preservation and controlling, and on sheet material, thermograde is eliminated；
3) carry out second punching press, the mobile punch that continues carries out further punching press to sheet material, until molding；
4) then keep punching press state, reduce simultaneously and with 1 DEG C/sec of speed, punch, edge mould and die lowered the temperature,
Until punch, edge mould and die are 25-30 DEG C；Then move punch, take off the steel plate sheet material of molding.
It is embodiments of the invention as mentioned above.The present invention is not limited to above-mentioned embodiment, and anyone should learn
The structure change made under the enlightenment of the present invention, every have same or like technical scheme with the present invention, each falls within this
Within the protection domain of invention.
Claims (4)
1. one kind utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology it is characterised in that step is as follows：
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch is contacted with plate surface, heat die and pressure
Side mould makes its temperature all control between 250-300 DEG C, and heating punch makes its temperature control between 50-80 DEG C, to die, pressure
Side mould and punch carry out preservation and controlling, set up stable thermograde on sheet material；
2) first time punching press, mobile punch carries out punching press to sheet material, and punch displacement is more than or equal to the half of punch-nose angle
Footpath, solid punch stops punching press, punch is heated, so that the temperature of punch is heated between 250-300 DEG C, to die, pressure
Side mould and punch carry out preservation and controlling, and on sheet material, thermograde is eliminated；
3) carry out second punching press, the mobile punch that continues carries out further punching press to sheet material, until molding；
4) then keep punching press state, reduce simultaneously and with 0.5-3 DEG C/sec of speed, punch, edge mould and die lowered the temperature,
Until punch, edge mould and die are 25-30 DEG C；Then move punch, take off the steel plate sheet material of molding.
2. one kind according to claim 1 utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and its feature exists
In described in described step (1), the temperature control of die, edge mould is at 270 DEG C；The temperature control of described punch is at 65 DEG C.
3. one kind according to claim 1 utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and its feature exists
In described in described step (2), the temperature control of punch is at 270 DEG C.
4. one kind according to claim 1 utilizes the gradient temperature difference stamping forming steel panel Sheet Metal Forming Technology, and its feature exists
In the cooling rate of die, edge mould and punch described in described step (4) is 1 DEG C/sec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150367.7A CN106424282A (en) | 2016-12-14 | 2016-12-14 | Steel plate punching process utilizing gradient temperature difference based punch forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150367.7A CN106424282A (en) | 2016-12-14 | 2016-12-14 | Steel plate punching process utilizing gradient temperature difference based punch forming |
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| Publication Number | Publication Date |
|---|---|
| CN106424282A true CN106424282A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611150367.7A Pending CN106424282A (en) | 2016-12-14 | 2016-12-14 | Steel plate punching process utilizing gradient temperature difference based punch forming |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252841A (en) * | 2017-06-30 | 2017-10-17 | 太仓市华天冲压五金制品厂 | A kind of heating process for stamping of machining high-precision convex portion |
| CN108043971A (en) * | 2017-12-08 | 2018-05-18 | 吉林大学 | A kind of hot press-formed method for rapidly and efficiently realizing high-strength steel part capability gradient distribution |
| CN109420700A (en) * | 2017-08-30 | 2019-03-05 | 比亚迪股份有限公司 | A kind of magnesium alloy punched technique and car seat basin |
| CN111571136A (en) * | 2020-05-21 | 2020-08-25 | 昆山久茂电子科技有限公司 | Workpiece stamping process for electronic product processing |
| CN111687278A (en) * | 2019-03-11 | 2020-09-22 | 广东菲力绿色板业有限公司 | Plate stamping process |
-
2016
- 2016-12-14 CN CN201611150367.7A patent/CN106424282A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252841A (en) * | 2017-06-30 | 2017-10-17 | 太仓市华天冲压五金制品厂 | A kind of heating process for stamping of machining high-precision convex portion |
| CN107252841B (en) * | 2017-06-30 | 2019-04-26 | 太仓市华天冲压五金制品厂 | A kind of heating process for stamping of machining high-precision protrusion |
| CN109420700A (en) * | 2017-08-30 | 2019-03-05 | 比亚迪股份有限公司 | A kind of magnesium alloy punched technique and car seat basin |
| CN109420700B (en) * | 2017-08-30 | 2020-08-25 | 比亚迪股份有限公司 | Magnesium alloy stamping process and automobile seat basin |
| CN108043971A (en) * | 2017-12-08 | 2018-05-18 | 吉林大学 | A kind of hot press-formed method for rapidly and efficiently realizing high-strength steel part capability gradient distribution |
| CN108043971B (en) * | 2017-12-08 | 2019-05-17 | 吉林大学 | A kind of hot press-formed method for rapidly and efficiently realizing high-strength steel part capability gradient distribution |
| CN111687278A (en) * | 2019-03-11 | 2020-09-22 | 广东菲力绿色板业有限公司 | Plate stamping process |
| CN111571136A (en) * | 2020-05-21 | 2020-08-25 | 昆山久茂电子科技有限公司 | Workpiece stamping process for electronic product processing |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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| WD01 | Invention patent application deemed withdrawn after publication |