CN101028643A - Cast workpiece forming machine with gapless roller - Google Patents
Cast workpiece forming machine with gapless roller Download PDFInfo
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- CN101028643A CN101028643A CN 200610057782 CN200610057782A CN101028643A CN 101028643 A CN101028643 A CN 101028643A CN 200610057782 CN200610057782 CN 200610057782 CN 200610057782 A CN200610057782 A CN 200610057782A CN 101028643 A CN101028643 A CN 101028643A
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- tourelle
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Abstract
A forming machine with non-gap rolling units for the forged part is composed of a machine base with a concave cavity, two first non-gap rolling units installed at the front left and front right ends of said concave cavity, two second non-gap rolling units installed at the back left and back right ends of said concave cavity, and a male die in contact with said non-gap rolling units for smooth sliding.
Description
Technical field
The present invention is a kind of forging parts shaping machine, particularly relates in a kind of support that is installed in forging parts shaping machine, is used for the forging parts shaping machine with no gap tourelle that stably slides for this male model device.
Background technology
The manufacturing of forging parts such as general screw, nut, be that wire rod is sent in the forging parts shaping machine haply, after straightening, shearing, utilize clamping device to pinch to the master mold device, and driving male model device slides punching press towards the master mold device, carry out a series of forging operation, then continue subsequent jobs such as system tooth again, to finish manufacturing.Yet, for can tripartite confrontation in cost price market with keen competition, the design that industry is there's no one who doesn't or isn't pursued more at a high speed at present, accurate, low-cost and zero flaw produces, make that respectively to install start rapider, in the hope of the energy small profits and quick turnover, therefore, between device impact forging all linked with one another with pinch flow process also must be accurate compact, do not allow the error carelessness.
And forging parts shaping machine in the past, for a male model device can be moved forward and backward in a support glidingly, just in the gap of support and male model device, inject lubricating oil, form one deck oil film, to reduce skid resistance, yet, because the speed and the frequency of this male model device impact forging are quite big,, cause sliding contact surface to burn and adhere to so can cause the breakage of this layer oil film by frictional heat, lose precision gradually, even the male model device can stuckly can not slide in support.Though the manufacturers design that has strengthens the gap between support and male model device, with prevent the friction, yet since this gap bigger, so the male model device has the unsettled situation of rocking when initial slippage, in impact forging, also can lose accuracy, cause the fraction defective of product to raise.
As shown in Figure 1, it is a kind of forging parts shaping machine 1 that in the past had no gap tourelle, comprise: one has one is installed in the no gap tourelle 12 of the left and right sides front end of room 111 and a corresponding slippingly male model device 13 that is installed in the room 111 up and to the support 11, two of the room 111 of open front relatively.Described no gap tourelle 12 is position and arranged on left and right sides at male model device 13, and respectively do not have gap tourelle 12 and all be provided with the roller 121 that several rollings are contacted with this male model device 13, cunning by described roller 121 is supported, make this male model device 13 to move glidingly, and not having the situation of frictional heat, design can improve defective in the past so roll in this no gap.
Because forging parts shaping machine 1 just must produce the huge finished product of quantity in one minute, so this male model device 13 must move at a terrific speed, yet, described no gap tourelle 12 is mounted in the both sides front end of this support 11, just corresponding position is in the front side of male model device 13, so only can between both front sides, form the effect of rolling in no gap when sliding, then can soar as for the rear side position of male model device 13 and to be suspended in the room 111, be not subjected to any holding effect, and male model device 13 by the position of contact roller 121 backward to the distance of rear side, be about 2: 1 with the distance proportion that to front end several Zhi Chongtou (figure do not show) is installed forward, therefore if during small deflection, male model device 13 will be that the center produces to rock and wags the tail with the position of no gap contact roller 121, this moment, the position of drift will be offset, stability is lower, when male model device 13 impact forging forward, when the front end drift being pressed to be positioned at a master mold device 14 in the place ahead, as easy as rolling off a log meeting causes situation about miscuing, this will cause the accuracy of product poor, thereby produce more faulty materials, cause waste, if taking place, drift miscues situations such as damage or fracture, not only can increase and keep in repair the cost that changes the outfit, and can shorten service life of drift, with regard to the stamped process of present per minute 160 times, can charge and attack 5～100,000 forging parts the service life of general drift approximately, moreover drift is normally made with expensive tungsten carbide (WC) material, therefore spent cost is high especially, in addition, changing the Suspend Job that to shut down when repairing drift, also can cause thus stopping production, cause output to reduce, and above-mentioned many disadvantages all must further be improved.
Summary of the invention
Main purpose of the present invention is to be to provide a kind of to have the male model of making device can stablize slip accurately in the slippage impact forging, and the forging parts shaping machine with no gap tourelle of effect such as can improve the quality of products and increase the service life.
A kind of forging parts shaping machine with no gap tourelle of the present invention comprises a support, 2 first no gap tourelles, 2 second no gap tourelles, and a male model device.This support has a diapire, two respectively from the upwardly extending sidewall in the left and right sides of diapire, reach two and be fixed on the sidewall and front and back length respectively opposite to each other to the rail plate that extends, this diapire, sidewall and rail plate define a room jointly, and each sidewall all has upside position, a corresponding downside position for the installation of rail plate above the rail plate.Each first no gap tourelle all comprises at least one first roller unit that is installed in the front side of this rail plate, and this first roller unit has one and can roll and protruding first roller that exposes the inboard of this rail plate.The described second no gap tourelle is installed in respectively on the sidewall of this support, each second no gap tourelle all comprises the second roller unit at least one rear side that is installed in the upside position, and this second roller unit has one and can roll and protruding second roller that exposes this medial surface.This male model device is installed in the room of this support slippingly, can be driven and impact forging forward, and comprise that two lay respectively at the side plate of and arranged on left and right sides and corresponding contiguous rail plate, and two protrude out and sit the wing plate of putting above this rail plate by the top radial outward of side plate respectively, and the outside of each wing plate all can be for the contact of rolling of second roller.When this male model device is driven and when moving forward and backward, can make this male model device to move swimmingly and slide by second roller that the is positioned at and arranged on left and right sides contact of rolling.
Description of drawings
Fig. 1 is an a kind of schematic top plan view in the past;
Fig. 2 is a part of perspective exploded view of one first preferred embodiment of the forging parts shaping machine with no gap tourelle of the present invention;
Fig. 3 is a schematic top plan view of this first preferred embodiment;
Fig. 4 is a schematic side view of this first preferred embodiment;
Fig. 5 is a part of three-dimensional exploded view of this first preferred embodiment, and the structure of one first roller unit is described;
Fig. 6 is that the some of this first preferred embodiment is analysed and observe schematic top plan view, and the structure of the first roller unit is described;
Fig. 7 is a part of cross sectional side schematic diagram of this first preferred embodiment, and the structure of the first roller unit is described;
Fig. 8 is a part of three-dimensional exploded view of this first preferred embodiment, and the structure of one second roller unit is described;
Fig. 9 is that the some of this first preferred embodiment is analysed and observe schematic top plan view, and the structure of the second roller unit is described;
Figure 10 is a part of cross sectional side schematic diagram of this first preferred embodiment, and the structure of the second roller unit is described;
Figure 11 is a part of three-dimensional exploded view of one second preferred embodiment of the forging parts shaping machine with no gap tourelle of the present invention;
Figure 12 is that the some of this second preferred embodiment is analysed and observe schematic top plan view;
Figure 13 is a part of cross sectional side schematic diagram of this second preferred embodiment;
Figure 14 is a part of three-dimensional exploded view of one the 3rd preferred embodiment of the forging parts shaping machine with no gap tourelle of the present invention;
Figure 15 is that the some of the 3rd preferred embodiment is analysed and observe schematic top plan view;
Figure 16 is a part of cross sectional side schematic diagram of the 3rd preferred embodiment.
The specific embodiment
Below by most preferred embodiment and accompanying drawing the forging parts shaping machine that the present invention has no gap tourelle is elaborated.
For convenience of description, following embodiment, components identical is represented with identical label.
As Fig. 2, Fig. 3 and shown in Figure 4, first preferred embodiment that the present invention has the forging parts shaping machine of no gap tourelle comprises a support 2,2 first no gap tourelles 3,2 second no gap tourelles 4, and a male model device 5.
This support 2 has a diapire 21, the two upwardly extending sidewall 22 from the left and right sides of diapire 21 respectively, and two be fixed on the sidewall 22 respectively opposite to each other and front and back length to the rail plate 23 that extends, this diapire 21, sidewall 22 define a room 24 jointly with rail plate 23.Each sidewall 22 all has installed surface 222, two that an end face 221, is located at end face 221 inboards and is recessed to form on this installed surface 222 and be communicated with the fluting 223 of medial surface, the upside position 224 above rail plate 23, and a corresponding downside position 225 of installing for rail plate 23.Each rail plate 23 have two be located at front side and inside and outside perforation up and down wear groove 231, and a boundary goes out the front face 232 that this wears groove 231 front sides.
As Fig. 5, Fig. 6 and shown in Figure 7, each of each rail plate 23 is worn groove 231 and is had the sulculus portion 233 of an adjacent medial side, the big slot part 234 of an adjacent lateral side, and two shoulders 235 that are respectively formed between the upper and lower side of large and small slot part 234,233.And the described first no gap tourelle 3 is mounted in the rail plate 23 of this support 2 and corresponding position on the left side of this male model device 5, right two sides, each first no gap tourelle 3 comprises that all two are installed in the first roller unit 31 of these rail plate 23 front sides, this first roller unit 31 has one and is installed in first roller mount 311 of wearing in the groove 231, one is installed in first roller mount 311 and protruding this year of side 231 first roller 312 that exposes, one rollably is articulated in first pivot 313 in first roller mount 311 with first roller 312, one can be embedded in first cushion block 314 at 225 at the downside position of the outside of first roller mount 311 and sidewall 22 up or down, two stretched through respectively this front faces 232 and be screwed into first of first cushion block 314 and adjust screw 315, two contacts are at first elastic component 316 of 311 of the shoulder 235 of rail plate 23 and first roller mount, and one be screwed in this front face 232 and contact at the set screw 317 of the front side of first cushion block 314.
This first roller mount 311 has a seat inclined-plane 318 that is formed on the outside and tilts from inside to outside, and first cushion block 314 has one and is formed at inboard and cooperation and abuts pad inclined-plane 319 on the present inclined-plane 318.First elastic component 316 has the elastic force that perseverance makes first roller mount 311 move towards first cushion block 314.When rotating the first adjustment screw 315, just can be relative to driving first cushion block, 314 forward and backward moving, and cooperate first elastic component 316 to spur first roller mount 311, with outside drive first roller mount 311, the interior adjustment position of moving, adjusting this set screw 317 more just can be in order to support the position of fixed first cushion block 314.
As Fig. 8, Fig. 9 and shown in Figure 10, the described second no gap tourelle 4 is installed in respectively on the sidewall 22 of this support 2, each second no gap tourelle 4 comprises that all one is installed in the second roller unit 41 in the rear side of sidewall 22, this second roller unit 41 has second roller mount 411 that is installed in the fluting 223, one is housed in second roller mount 411 and rollably protruding second roller 412 that exposes this medial surface 226, one rollably is articulated in second pivot 413 in second roller mount 411 with second roller 412, two be spirally connected second roller mount 411 and sidewalls 22, and in order to second roller mount 411 being positioned at the interlocking screw 414 in this fluting 223, and second cushion block 415 that is embedded in 22 of the outside of second roller mount 411 and sidewalls.Each second no gap tourelle 4 more comprises a gland on second roller mount 411 and installed surface 222 and the cover plate 42 of gap digit above rail plate 23 that extend internally, and several respectively with the fixed screws 43 of cover plate 42 lockings on installed surface 222.
As Fig. 2, Fig. 7 and shown in Figure 10, this male model device 5 is installed in the room 24 of this support 2 slippingly, can be driven and impact forging forward, and comprise that two lay respectively at the side plate 51 of and arranged on left and right sides and corresponding contiguous rail plate 23, and two protruded out and sit to put at the wing plate above this rail plate 23 52, four by the top radial outward of side plate 51 respectively and be installed in first steel plate 53 on the outer front side of side plate 51 respectively, and two second steel plates 54 that are installed in respectively on the outside back of wing plate 52.Wing plate 52 can move at rail plate 23 and 42 of cover plates.
When this male model device is driven and is moved forward and backward, described first steel plate 53 can correspondingly respectively be slided and be butted on described first roller 312, described second steel plate 54 can correspondingly respectively be slided and be butted on described second roller 412, can be by the rolling contact of the described roller 312,412 that is positioned at and arranged on left and right sides, making this male model device 5 can stablize to move swimmingly slides, forward and backward whereby side does not have gap rolling contact, can avoid the thermal expansion that produces because of friction, reach under high stability, can accurate slide the purpose of impact forging apace.
As Figure 11, Figure 12 and shown in Figure 13, the present invention has second preferred embodiment of the forging parts shaping machine of no gap tourelle, present embodiment is roughly identical with first embodiment, different positions are: each of present embodiment second roller unit 41 has more second cushion block 481 that can be embedded in 22 of the outside of second roller mount 411 and sidewalls up or down, one is fixed on the built plate 482 at this second roller mount 411 and second cushion block, 481 tops, second of the built plate 482 and second cushion block 481 that is spirally connected adjusted screw 483 but an original place stretches through downwards rotatably, two ecto-entads pass across this sidewall 22 and the outer screw 484 that draws of second roller mount 411 that is spirally connected, and several pieces have perseverance and make outer second elastic component 485 that draws the elastic force that screw 484 outwards moves together with second roller mount 411.
This second roller mount 411 has a seat inclined-plane 486 that is formed on the outside and tilts from top to bottom, and second cushion block 481 has one and is formed at inboard and cooperation and abuts pad inclined-plane 487 on the present inclined-plane 486.Rotate second during adjustment and adjust screw 483, just can be relative to driving second cushion block, 481 upper and lower moving, and pushing tow second roller mount 411 moves towards wing plate 52, or cooperates second elastic component 485 pullings, second roller mount 411 to reset toward in, so as to adjusting the position of second roller 412.
As Figure 14, Figure 15 and shown in Figure 16, the present invention has the 3rd preferred embodiment of the forging parts shaping machine of no gap tourelle, present embodiment is roughly identical with second embodiment, different positions are: each of present embodiment second roller unit 41 has more 22 of the outside that is embedded in second roller mount 411 up and down and sidewalls, and can relatively move one on a cushion block 491 and a lower cushion block 492, one stretched through downwards goes up second of the cushion block 491 and the lower cushion block 492 that is spirally connected and adjusts screw 493, two ecto-entads pass across this sidewall 22 and the outer screw 494 that draws of second roller mount 411 that is spirally connected, and several pieces have perseverance and make outer second elastic component 495 that draws the elastic force that screw 494 outwards moves together with second roller mount 411.
This second roller mount 411 has one and is formed on the first half in the outside and gradually outwards and towards the inclined-plane, the seat of honour 496 that has a down dip, and one is formed on the Lower Half in the outside and gradually inwardly and towards a following inclined-plane 497 that has a down dip.Last cushion block 491 has one and is formed at inboard and cooperation and abuts against and go up pad inclined-plane 498 on the inclined-plane, the seat of honour 496, and lower cushion block 492 then has one and is formed at inboard and cooperation and abuts against down underlay inclined-plane 499 on the inclined-plane 497.Rotate second during adjustment and adjust screw 493, relative to driving lower cushion block 492 upper and lower moving, and cooperate second elastic component 495 pulling, second roller mount 411 up, the active force of lower cushion block 491,492 contacts, can allow cushion block 491 adjust screw 493 together with second simultaneously relatively moves with it, so just energy pushing tow second roller mount 411 moves outward or resets toward in, so as to adjusting the position of second roller 412.
As shown in the above description, the forging parts shaping machine that the present invention has a no gap tourelle in design, it is a left side in this support 2, before the right both sides, the rear is separately installed with first, two no gap tourelles 3,4, by described no gap tourelle 3,4 roller 312,412, make this male model device 5 before, the rear all is stabilized the ground holding, so in the impact forging of rolling slippage, can comparatively slide along accurate, be difficult for producing skew, can improve the quality of products, and this male model device 5 can be faster on sliding, so per minute can carry out 410 times charging and attacking fast, so can reduce the thermal expansion that friction is produced, can prolong the service life of drift, a drift can charge and attack 3,600,000 forging parts approximately, can increase the service life, so the present invention has effects such as can improving the quality of products and increase the service life, can reach purpose of the present invention really.
Claims (10)
1. forging parts shaping machine with no gap tourelle, comprise a support, reaching one is installed in slippingly in this support and can be driven and the male model device of impact forging forward, this support has a slice diapire, reach two respectively from the upwardly extending sidewall in the left and right sides of diapire, it is characterized in that:
This support also has two and is fixed on the sidewall and front and back length respectively opposite to each other to the rail plate that extends, this diapire, sidewall and rail plate define the room of a ccontaining male model device jointly, each sidewall all has the upside position of a position above the rail plate, and a corresponding downside position for the installation of rail plate;
This male model device comprises two side plates that lay respectively at and arranged on left and right sides and corresponding contiguous rail plate, and two protrude out and sit the wing plate of putting above this rail plate by the top radial outward of side plate respectively;
This forging parts shaping machine also comprises two first no gap tourelles that are installed in respectively on this rail plate, and two second no gap tourelles that are installed in respectively on this sidewall; Each first no gap tourelle all comprises the first roller unit of the front side that at least one is installed in this rail plate, and this first roller unit has protruding first roller that exposes the inboard of this rail plate and roll and contact with side plate; Each second no gap tourelle all comprises the second roller unit of the rear side that at least one is installed in the upside position, and this second roller unit has protruding second roller that exposes the inboard of this upside position and roll and contact with wing plate.
2. the forging parts shaping machine with no gap tourelle as claimed in claim 1, it is characterized in that: this male model device comprises that more a slice at least is installed in the outside and corresponding sliding first steel plate that is butted on first roller of side plate, and a slice is installed in the outside and corresponding sliding second steel plate that is butted on second roller of wing plate at least.
3. the forging parts shaping machine with no gap tourelle as claimed in claim 1, it is characterized in that: each sheet sidewall has more an end face, an installed surface that is located at inside top surface, reach the fluting that at least one is recessed to form on this installed surface and is communicated with medial surface, each second roller unit has more one and is installed in the fluting and for the second ccontaining roller mount of second roller, and one rollably is articulated in second pivot in second roller mount with second roller.
4. the forging parts shaping machine with no gap tourelle as claimed in claim 3 is characterized in that: each second roller unit has more be spirally connected second roller mount and a sidewall second roller mount is positioned at the interlocking screw in the fluting.
5. the forging parts shaping machine with no gap tourelle as claimed in claim 4 is characterized in that: each second roller unit has more one and is embedded in the outside of second roller mount and second cushion block between sidewall.
6. the forging parts shaping machine with no gap tourelle as claimed in claim 3, it is characterized in that: each second roller unit has more one can be embedded in the outside of second roller mount and second cushion block between sidewall up or down, a slice is fixed on the built plate at the top of this second roller mount and second cushion block, the second adjustment screw of the built plate and second cushion block that is spirally connected but at least one original place stretched through downwards rotatably, at least one ecto-entad passes across this sidewall and the outer screw that draws of second roller mount that is spirally connected, and at least one has perseverance and makes the outer elastic component that draws the elastic force that screw outwards moves together with second roller mount, this second roller mount has a seat inclined-plane that is formed on the outside and tilts from top to bottom, and second cushion block has one and is formed at inboard and cooperation and abuts pad inclined-plane on the present inclined-plane.
7. the forging parts shaping machine with no gap tourelle as claimed in claim 3, it is characterized in that: each second roller unit has more between the outside that is embedded in second roller mount up and down and sidewall and of can relatively move goes up cushion block and a lower cushion block, at least one second of the last cushion block and the lower cushion block that is spirally connected that stretched through downwards adjusted screw, at least one ecto-entad passes across this sidewall and the outer screw that draws of second roller mount that is spirally connected, and at least one has perseverance and makes the outer elastic component that draws the elastic force that screw outwards moves together with second roller mount, this second roller mount has one and is formed on the first half in the outside and inclined-plane, the seat of honour outside gradually and that court has a down dip, reach one and be formed on the Lower Half in the outside and a following inclined-plane inside gradually and that court has a down dip, last cushion block has one and is formed at inboard and cooperation and abuts against and go up the pad inclined-plane on the inclined-plane, the seat of honour, and lower cushion block then has one and is formed at inboard and cooperation and abuts against down underlay inclined-plane on the inclined-plane.
8. the forging parts shaping machine with no gap tourelle as claimed in claim 3, it is characterized in that: each second no gap tourelle comprises that more a slice gland is on second roller mount and the installed surface and the cover plate of gap digit above the rail plate that extend internally, and several the fixed screws that respectively cover plate locked on installed surface, wing plate is that the position is between rail plate and cover plate.
9. the forging parts shaping machine with no gap tourelle as claimed in claim 1, it is characterized in that: the rail plate of each no gap tourelle has more at least one inside and outside groove of wearing that connects and supply the installation of the first roller unit, and a boundary goes out the front face that this wears a front side of groove, and each first roller unit has more one and is installed in and wears in the groove and for the first ccontaining roller mount of first roller, one rollably is articulated in first pivot in first roller mount with first roller, first cushion block of the following side interdigit of one outside that can be embedded in first roller mount up or down and sidewall, at least one this front face and be screwed into first of first cushion block and adjust screw of stretching through respectively, and at least one has the elastic component that perseverance makes the elastic force that second roller mount moves towards first cushion block, this first roller mount has a seat inclined-plane that is formed on the outside and tilts from inside to outside, and first cushion block has one and is formed at one inboard and cooperate the pad inclined-plane that abuts on the present inclined-plane.
10. the forging parts shaping machine with no gap tourelle as claimed in claim 9 is characterized in that: each first roller unit have more one be screwed in this front face and contact at the set screw of the front side of first cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610057782A CN101028643B (en) | 2006-02-27 | 2006-02-27 | Cast workpiece forming machine with gapless roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610057782A CN101028643B (en) | 2006-02-27 | 2006-02-27 | Cast workpiece forming machine with gapless roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101028643A true CN101028643A (en) | 2007-09-05 |
| CN101028643B CN101028643B (en) | 2010-05-12 |
Family
ID=38714298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610057782A Expired - Fee Related CN101028643B (en) | 2006-02-27 | 2006-02-27 | Cast workpiece forming machine with gapless roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101028643B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753851A (en) * | 2012-11-07 | 2014-04-30 | 上海标准件机械厂 | Zero-clearance mechanism for main sliding block of multi-station metal cold forming machine |
| CN108555213A (en) * | 2018-05-14 | 2018-09-21 | 大冶特殊钢股份有限公司 | A kind of sealed planker girder steel of quick forging machine and installation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2918333A (en) * | 1957-07-01 | 1959-12-22 | Nat Machinery Co | Roller bearing header slide |
| DE4035002A1 (en) * | 1990-11-03 | 1992-05-07 | Schloemann Siemag Ag | Slab press for hot broadband mills |
| CN2530750Y (en) * | 2002-01-18 | 2003-01-15 | 福光企业股份有限公司 | Forging component shaping machine heving gapless tumbler |
| CN100371103C (en) * | 2004-02-16 | 2008-02-27 | 福光企业股份有限公司 | Gapless operating device for forging article shaping machine |
-
2006
- 2006-02-27 CN CN200610057782A patent/CN101028643B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753851A (en) * | 2012-11-07 | 2014-04-30 | 上海标准件机械厂 | Zero-clearance mechanism for main sliding block of multi-station metal cold forming machine |
| CN108555213A (en) * | 2018-05-14 | 2018-09-21 | 大冶特殊钢股份有限公司 | A kind of sealed planker girder steel of quick forging machine and installation method |
| CN108555213B (en) * | 2018-05-14 | 2023-09-05 | 大冶特殊钢有限公司 | Sealed carriage steel beam of quick forging machine and installation method |
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| Publication number | Publication date |
|---|---|
| CN101028643B (en) | 2010-05-12 |
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