CN101786123B - Temperature-differential forming terrace die of metal sheet material - Google Patents
Temperature-differential forming terrace die of metal sheet material Download PDFInfo
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- CN101786123B CN101786123B CN2010101061199A CN201010106119A CN101786123B CN 101786123 B CN101786123 B CN 101786123B CN 2010101061199 A CN2010101061199 A CN 2010101061199A CN 201010106119 A CN201010106119 A CN 201010106119A CN 101786123 B CN101786123 B CN 101786123B
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- thermocouple
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Abstract
The invention relates to a temperature-differential forming terrace die of a metal sheet material, belonging to the technical field of moulds in the mechanical engineering. The thermal-differential forming terrace die comprises a terrace die shell, a cooling core, a thermocouple, a sensor jacking device, a water resistant core, a sealed rubber and a gland. The terrace die can measure the temperature at the center of the sheet in the forming process, thereby facilitating the quantitative analysis of the relationship between the sheet temperature gradient value and the sheet forming property in the temperature-differential forming process.
Description
Technical field
The present invention relates to a kind of punch, specifically is a kind of temperature-differential forming terrace die of metal sheet material, belongs to the technical field of mold in the mechanical engineering.
Background technology
Magnadure, high-strength steel sheet have specific strength height, anti-electromagnetic interference and rate of recovery advantages of higher as the light metal material in the practical applications, have a wide range of applications at automobile, Aeronautics and Astronautics and electronic applications.Therefore but magnadure, high-strength steel sheet forming property at normal temperatures is relatively poor, magnadure and high-strength steel sheet is carried out warm working and becomes one of main path of its forming property of raising.
Present warm working device is divided into " ausforming " and " temperature-differential forming " two kinds, and " ausforming " is meant sheet material temperature is basic identical everywhere in forming process; " temperature-differential forming " normally uses cooling medium (for example water) to let punch remain on lower temperature so that sheet material when being shaped the temperature of deformed area be lower than the not temperature of deformed area.Lot of test and theoretical proof and " ausforming " compare, " temperature-differential forming " can effectively improve the one-tenth sexuality of sheet material.The field distribution in gradient of temperature during temperature-differential forming on the sheet material exists maximum temperature (being generally sheet material flange place temperature) and minimum temperature (being generally sheet material center temperature) on the sheet material.So when temperature-differential forming, the maximum temperature (sheet material flange place temperature) that not only will control on the sheet material also is necessary control panel material minimum temperature (sheet material center temperature).
Through the prior art literature search is found; Chinese patent number is 200610117578 patent; Denomination of invention is: differential temperature drawing mould of magnesium alloy plate, and the technical scheme utilization cooling air that this patent of invention provides cools off punch, can realize that the difference temperature drawing of magnesium alloy plate is shaped; And on punch, be provided with thermometer hole, can detect the temperature of punch.But also have following not enough: at first thermocouple does not directly contact with plate, can not directly obtain the temperature value of sheet material center, can only be similar to by the temperature of punch to replace, and has reduced the degree of accuracy of measuring.Secondly, there is not concrete explanation how to realize the temperature of punch is controlled yet.
One Chinese patent application number is 200610155912.1 patent; Denomination of invention is: a kind of sheet material non-isothermal punching forming device; The cooling punch that adopts in the technical scheme that this patent of invention provides can make cooling medium in the punch inner loop, can realize that the difference temperature drawing of sheet metal is shaped.But occasionally other temperature-measuring part of thermoelectricity is not set on the punch of this device, and the temperature of center in the time of can not knowing sheet material forming more can't be controlled the minimum temperature of cooling.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; A kind of temperature-differential forming terrace die of metal sheet material is provided; Can record the forming temperature of sheet material center through the thermocouple on the punch, and control the chilling temperature of sheet material center through the flow of regulating cooling medium in view of the above.
The present invention realizes that through following technical scheme the present invention mainly comprises: punch shell, cooling core and thermocouple.
The punch shell is divided into cooling chamber and installation cavity two parts, and inwardly there is round boss punch upper surface of outer cover center, has shoulder hole on the boss, and thermocouple is inserted in the shoulder hole at boss center, and the thermocouple below is provided with the sensor jacking system.When the punch shell did not contact with sheet material, the sensor jacking system made the upper surface of thermocouple measurement end exceed the punch upper surface of outer cover thermocouple jack-up.When the punch shell contacted with sheet material, thermocouple was pressed onto in the punch shell by sheet material, and the sensor jacking system is pressed on the sheet material upper surface of thermocouple measurement end to the jack-up power of thermocouple.
The cooling core is divided into construction section and cooling section two parts, and the cooling core is fixed on cooling chamber and the installation cavity interface, and cooling section stretches in the cooling chamber, also is provided with inlet opening and apopore on the construction section.Cooling core bottom is provided with sealing device, is provided with water-resistant core in the cooling core through hole of center, water-resistant core hollow, and fix with the top of punch shell.
Sealing device is made up of caulking gum and gland, and caulking gum is installed in the circular trough of construction section lower end, and is sleeved on the water-resistant core.Gland is pressed on the caulking gum and with the cooling core and fixes.
The sensor jacking system is made up of spring and stop nut, and spring is installed in thermocouple measurement end bottom.Stop nut is spun on the terminal screw thread of thermocouple mounting rod, regulates the height of thermocouple through the precession length of adjustment stop nut.
The sensor jacking system can also be made up of position-limited needle, spring and spring base.Spring base is coaxial with the punch shell, is fixed on the lower bolster.The spring base center is designed with counter sink, and the thermocouple mounting rod is inserted in the counter sink at shoulder hole and spring base center of punch shell center boss.Along its diametric(al) through hole is arranged in appropriate position, thermocouple mounting rod lower part, position-limited needle is sleeved in this through hole.Spring is installed between spring base counter sink and the position-limited needle.
The invention has the advantages that, can record the forming temperature of sheet material center, and can control the chilling temperature of sheet material center in view of the above through the flow of regulating cooling medium through the thermocouple on the punch.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 cools off the structural representation of core for the present invention;
Fig. 3 is the structural representation of the specific embodiment of the invention 2;
Fig. 4 is the specific embodiment of the invention 1 and other parts assembly relation sketch map of mould;
Fig. 5 is the specific embodiment of the invention 2 and other parts assembly relation sketch map of mould.
Among the figure, 1-punch shell, 2-cooling core, 3-water-resistant core, 4-caulking gum, 5-gland, 6-thermocouple, 7-spring, 8-stop nut, 9-position-limited needle, 10-spring base; A-thermocouple measurement end, b-thermocouple measurement end lower surface, c-shoulder hole, d-cooling section, e-construction section, f-installation cavity, g-cooling chamber, i-inlet opening, j-apopore, m-cooling core through hole, n-circular trough, p-boss, q-thermocouple mounting rod, r-lead go out line three-way hole, s-wire hole; A-sheet material, B-die, C-blank holder, D-push rod, E-lower bolster.
The specific embodiment
With cylindrical member difference temperature drawing punch is example.As shown in Figure 1, be a kind of specific embodiments of the present invention, mainly comprise: punch shell 1, cooling core 2, thermocouple 6, sensor jacking system, water-resistant core 3, caulking gum 4, gland 5.
Thermocouple 6 is divided into thermocouple measurement end a and thermocouple mounting rod q two parts, and thermocouple measurement end a upper surface can obtain the temperature value of contact surface when contacting with sheet material to be measured.Thermocouple mounting rod q tip designs has screw thread, and thermocouple mounting rod q is inserted among the shoulder hole c of punch shell 1 center boss p.
The sensor jacking system is made up of spring 7 and stop nut 8, and spring 7 is installed between the interface in thermocouple measurement end a lower surface b and boss p central stepped c epimere and stage casing.Stop nut 8 is spun on the terminal screw thread of thermocouple mounting rod q.The precession distance of adjustment stop nut 8 makes spring 7 be in impaction state, and makes thermocouple measurement end a upper surface exceed 2～3 millimeters of the upper surfaces of punch shell 1.
Like Fig. 2, cooling core 2 centre bits are equipped with cooling core through hole m, and its lower end centre bit is equipped with circular trough n.Cooling core 2 is divided into construction section e and cooling section d two parts.Cooling section d upper end is designed with flange, the resistance when flowing to increase cooling medium, and this kind design is used in the upside-down mounting mould, can let cooling medium more fully contact with punch shell 1 inner upper surface, to strengthen the cooling effect of cooling medium to punch shell 1.Construction section e also is designed with flange, and the flange of construction section e is fixed on the interface of cooling chamber g and installation cavity f, and cooling section d inserts among the cooling chamber g.Have an apopore j and an inlet opening i on the flange of construction section e outer wall and construction section e.
Water-resistant core 3 hollows are inserted among the cooling core through hole m of cooling core 2 centers.Screw thread is connected on the screw thread of water-resistant core 3 through its epimere and the shoulder hole 6 hypomere inwalls.The lead of thermocouple 6 passes from the cooling core through hole m of cooling core 2 centers, and the wire hole s from the installation cavity f outer wall is drawn out to the outside of punch shell 1.
Like Fig. 3, be another kind of specific embodiments of the present invention.It is compared difference and is the different of sensor jacking system with scheme one.The sensor jacking system of this embodiment is made up of position-limited needle 9, spring 7 and spring base 10.Spring base 10 is coaxial with punch shell 1, is fixed on the lower bolster E.Spring base 10 centers are designed with counter sink.Thermocouple mounting rod q is inserted in the counter sink at shoulder hole c and spring base 10 centers of punch shell 1 center boss p.Be drilled with through hole in appropriate position, thermocouple mounting rod q lower part along its diametric(al), position-limited needle 9 is sleeved in this through hole.Spring 7 is installed between the counter sink and position-limited needle 9 of spring base 10, and is in compressive state all the time, makes position-limited needle 9 be close on water-resistant core 3 lower surfaces, has so just limited the distance that thermocouple 6 moves upward.And thermocouple measurement end a upper surface will exceed 2～3 millimeters of punch shell 1 upper surfaces.Near position, gland 5 lower surface, have lead on the water-resistant core 3 outer diameter directions and go out line three-way hole r, be used to draw the lead of thermocouple 6.
The characteristics of this embodiment are: the spring 7 of sensor jacking system is further from heated sheet material A.Because spring 7 overheated may inefficacies lose flexible performance, so under using with a kind of spring and situation, scheme two is more suitable for the higher operating mode of heating-up temperature.But it is simple that scheme one is installed, and number of parts is few, and can adjust the jack-up height of thermocouple 6 at any time, so the selection of embodiment should be decided according to actual conditions.
Fig. 4 and Fig. 5 are respectively the present invention's and other parts of mould in two kinds of specific embodiments scheme of installation.Terminals with thermocouple 6 during use are connected with the signal input part of temperature controller, also will distinguish inlet opening i and apopore j that water pipe connects temperature-differential forming terrace die, and feed cooling water.Cooling water is the cooling chamber g of i inflow punch shell 1 from the inlet opening earlier, flows into the space between cooling core 2 and the water-resistant core 3 again, flows out from delivery port j then.
In to 1 cooling of punch shell, to set the heating-up temperature of blank holder C and die B, and sheet material A is put into mould, mold closing is heated.When treating that temperature reaches preset value plate A is carried out drawing.During punching press, sheet material A center is pressed on punch shell 1 upper surface, and thermocouple 6 is pushed back punch shell 1 inside, and the sensor jacking system is pressed on the sheet material A thermocouple measurement end a upper surface to the jack-up power of thermocouple 6.This moment, thermocouple 6 just can be measured the temperature of sheet material A center, and the temperature signal that records writes down through temperature control box and shows, and controlled the chilling temperature of sheet material center through the flow of regulating cooling medium in view of the above.
Claims (2)
1. temperature-differential forming terrace die of metal sheet material; Comprise: punch shell (1), cooling core (2) and thermocouple (6) is characterized in that: punch shell (1) is divided into cooling chamber (g) and installation cavity (f) two parts; Inwardly there is round boss (p) punch shell (1) upper surface center; Have shoulder hole (c) on the boss (p), thermocouple (6) is inserted into shoulder hole (c) lining at boss (p) center, and thermocouple (6) below is provided with the sensor jacking system; Punch shell (1) not with sheet material (A) when contacting, the sensor jacking system makes the upper surface of thermocouple measurement end (a) exceed punch shell (1) upper surface thermocouple (6) jack-up; When contacting, thermocouple (6) is pressed onto in the punch shell (1) by sheet material (A) at punch shell (1) and sheet material (A), and the sensor jacking system is pressed on the sheet material (A) upper surface of thermocouple measurement end (a) to the jack-up power of thermocouple (6); Cooling core (2) is divided into construction section (e) and cooling section (d) two parts, and cooling core (2) is fixed on cooling chamber (g) and installation cavity (f) interface, and cooling section (d) stretches into cooling chamber (g) lining, also is provided with inlet opening (i) and apopore (j) on the construction section (e); Cooling core (2) bottom is provided with sealing device, and cooling core through hole (m) lining of center is provided with water-resistant core (3), water-resistant core (3) hollow, and fix with the top of punch shell (1); The sensor jacking system is made up of spring (7) and stop nut (8), and spring (7) is installed in thermocouple measurement end (a) bottom; Stop nut (8) is spun on the terminal screw thread of thermocouple mounting rod (q), regulates the height of thermocouple (6) through the precession length of adjustment stop nut (8); Sensor jacking system or form by position-limited needle (9), spring (7) and spring base (10); Spring base (10) is coaxial with punch shell (1), is fixed on the lower bolster (E); Spring base (10) center is designed with counter sink, and thermocouple mounting rod (q) is inserted in the counter sink at shoulder hole (c) and spring base (10) center of punch shell (1) center boss (p); Along its diametric(al) through hole is arranged in thermocouple mounting rod (q) appropriate position, lower part, position-limited needle (9) is sleeved in this through hole; Spring (7) is installed between spring base (10) counter sink and the position-limited needle (9).
2. the described a kind of temperature-differential forming terrace die of metal sheet material of claim 1, it is characterized in that: sealing device is made up of caulking gum (4) and gland (5), and caulking gum (4) is installed in the circular trough (n) of construction section (e) lower end, and is sleeved on the water-resistant core (3); Gland (5) is pressed on caulking gum (4) and upward and with cooling core (2) fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101061199A CN101786123B (en) | 2010-02-05 | 2010-02-05 | Temperature-differential forming terrace die of metal sheet material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101061199A CN101786123B (en) | 2010-02-05 | 2010-02-05 | Temperature-differential forming terrace die of metal sheet material |
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| CN101786123A CN101786123A (en) | 2010-07-28 |
| CN101786123B true CN101786123B (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101061199A Expired - Fee Related CN101786123B (en) | 2010-02-05 | 2010-02-05 | Temperature-differential forming terrace die of metal sheet material |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102609032A (en) * | 2011-01-20 | 2012-07-25 | 群达塑胶电子（深圳）有限公司 | Aluminum alloy laptop shell, forming mold, milling fixture and forming method |
| CN105328003B (en) * | 2015-12-08 | 2017-06-30 | 吉林大学 | A kind of Micro-parts punch-pin deep cooling punching building mortion and its manufacturing process |
| CN105382091B (en) * | 2015-12-08 | 2017-06-30 | 吉林大学 | A kind of Micro-parts blank holder deep cooling punching building mortion and its manufacturing process |
Citations (10)
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|---|---|---|---|---|
| US6550302B1 (en) * | 1999-07-27 | 2003-04-22 | The Regents Of The University Of Michigan | Sheet metal stamping die design for warm forming |
| CN1744958A (en) * | 2003-01-31 | 2006-03-08 | 新日本制铁株式会社 | Press die apparatus for thin plate and press forming method |
| JP2006205244A (en) * | 2005-01-31 | 2006-08-10 | Sumitomo Light Metal Ind Ltd | Warm-formed article and its production method |
| CN1943906A (en) * | 2006-10-26 | 2007-04-11 | 上海交通大学 | Differential temperature drawing mould of magnesium alloy plate |
| CN1943899A (en) * | 2006-10-26 | 2007-04-11 | 上海交通大学 | Pressure variable edge force difference temperature drawing method for magnesium alloy plate |
| CN101018626A (en) * | 2005-02-25 | 2007-08-15 | 杰富意钢铁株式会社 | Pressing forming device and pressing forming method for metal plate |
| CN200948483Y (en) * | 2006-09-20 | 2007-09-19 | 中国科学院金属研究所 | Sheet material non-isothermal stamping device |
| CN101347810A (en) * | 2008-08-22 | 2009-01-21 | 江苏大学 | Nc incremental magnesium alloy sheet thermoforming method and heating mechanism thereof |
| CN101518804A (en) * | 2008-02-27 | 2009-09-02 | 胡平 | Design method for warm forming die structure of automotive sheet and cooling device |
| CN101767152A (en) * | 2010-02-05 | 2010-07-07 | 江苏大学 | Isothermal and differential dual temperature forming die of metal plate |
-
2010
- 2010-02-05 CN CN2010101061199A patent/CN101786123B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6550302B1 (en) * | 1999-07-27 | 2003-04-22 | The Regents Of The University Of Michigan | Sheet metal stamping die design for warm forming |
| CN1744958A (en) * | 2003-01-31 | 2006-03-08 | 新日本制铁株式会社 | Press die apparatus for thin plate and press forming method |
| JP2006205244A (en) * | 2005-01-31 | 2006-08-10 | Sumitomo Light Metal Ind Ltd | Warm-formed article and its production method |
| CN101018626A (en) * | 2005-02-25 | 2007-08-15 | 杰富意钢铁株式会社 | Pressing forming device and pressing forming method for metal plate |
| CN200948483Y (en) * | 2006-09-20 | 2007-09-19 | 中国科学院金属研究所 | Sheet material non-isothermal stamping device |
| CN1943906A (en) * | 2006-10-26 | 2007-04-11 | 上海交通大学 | Differential temperature drawing mould of magnesium alloy plate |
| CN1943899A (en) * | 2006-10-26 | 2007-04-11 | 上海交通大学 | Pressure variable edge force difference temperature drawing method for magnesium alloy plate |
| CN101518804A (en) * | 2008-02-27 | 2009-09-02 | 胡平 | Design method for warm forming die structure of automotive sheet and cooling device |
| CN101347810A (en) * | 2008-08-22 | 2009-01-21 | 江苏大学 | Nc incremental magnesium alloy sheet thermoforming method and heating mechanism thereof |
| CN101767152A (en) * | 2010-02-05 | 2010-07-07 | 江苏大学 | Isothermal and differential dual temperature forming die of metal plate |
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| CN101786123A (en) | 2010-07-28 |
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Application publication date: 20100728 Assignee: Jiangsu Huaqiang Mould Technology Co., Ltd. Assignor: Jiangsu University Contract record no.: 2013320000343 Denomination of invention: Temperature-differential forming terrace die of metal sheet material Granted publication date: 20120620 License type: Exclusive License Record date: 20130418 |
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