CN202192194U - Die forging device for titanium alloy forging piece - Google Patents

Die forging device for titanium alloy forging piece Download PDF

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Publication number
CN202192194U
CN202192194U CN2011202614508U CN201120261450U CN202192194U CN 202192194 U CN202192194 U CN 202192194U CN 2011202614508 U CN2011202614508 U CN 2011202614508U CN 201120261450 U CN201120261450 U CN 201120261450U CN 202192194 U CN202192194 U CN 202192194U
Authority
CN
China
Prior art keywords
forging
patrix
die
hole
titanium alloy
Prior art date
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.)
Expired - Fee Related
Application number
CN2011202614508U
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Chinese (zh)
Inventor
赵林华
沈炎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd
Original Assignee
JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd filed Critical JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd
Priority to CN2011202614508U priority Critical patent/CN202192194U/en
Application granted granted Critical
Publication of CN202192194U publication Critical patent/CN202192194U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a die forging device for titanium alloy forging pieces. The die forging device comprises a through hole arranged on an upper base and being perpendicular to the upper base, an upper connecting rod having a sleeve structure and passing through the through hole, and an upper push rod penetrating through the upper connecting rod. The upper push rod has a threaded section and is cooperatively connected with a nut for spacing. An upper die is arranged on the lower end of the upper base, and provided with a central guide hole and a groove hole which is communicated with the central guide hole and is through in radial direction. The upper push rod penetrates through the central guide hole and the groove hole and has an upper die pin connected to the end thereof. The upper die pin is arranged in the groove hole and can be moved vertically along with the upper push rod. Both ends of the upper die pin are extended out of the upper die and connected with a collar, of which one end is sleeved outside the upper die. A lower die is arranged on the lower end of the upper die, and a through hole is arranged on the lower die. The lower die is arranged on a lower base, where a through hole for placing forging piece is situated. Even if being pressed by the collar, a forging piece may not be adhered to the upper die, thereby realizing the purpose of facilitating demoulding of the die forging piece.

Description

A kind of die forging device of titanium alloy forging
Technical field
The utility model relates to forging equipment, is specifically related to a kind of die forging device of titanium alloy forging.
Background technology
Be used for the ferroalloy isothermal forging of specific use, the typical process flow of its forging is:
1, carries out forging design, makes the mould of a, form fit very little with the ferroalloy forging;
2, adopt isothermal forging production technology system cake, shaped waste base;
3, adopt isothermal forging process, utilize mould that the waste base of ferroalloy is pressed into the alloy forging part;
4, the demoulding is deviate from the molded alloy forging part in mould;
5, heat treatment, machined.
Molded alloy isothermal forging is processed into parts the most at last.In the titanium alloy isothermal forging production process, the demoulding is indispensable operation.
Shown in 1, be existing titanium alloy forging die forging device, comprise entablature 10, top base 20, be fixed on patrix 40, counterdie 50, bottom base 70 and the forging 60 of top base 20 through nut 30.The hollow thin-wall forging shaft belongs to the key component of transmission system.When producing ferroalloy hollow thin-wall forging shaft, most of metal is done forward extrusion and is flowed along with patrix, flows but also there is the fraction metal to make rightabout.When accomplishing compacting and metal and be full of whole die cavity, can produce the overlap that some encase upper mould.Adopt conventional stripping means; On. mould 40 and pedestal 20 are with the entablature 10 backhauls one step demoulding; Can meet with the difficult problem of " demoulding difficulty is that forging is stained with mould ": its one side, forging wraps in patrix and can take off, and the type of cooling of forging has become slow cooling by original quick water-cooled; The forging strength character has very big decline, influences the qualification rate of forging products; On the other hand,, adopt forging descending, forging is compressed into die cavity once more with upper die mold for forging is taken out.To encase the resistance of patrix bigger because the frictional force of inner surface adds overlap; Must mould all be cooled to below 600 ℃; Through the temperature difference of interior external mold and the difference of the high temperature alloy and the titanium alloy coefficient of expansion; Increase the resistance between forging outer wall and the inside casing mould, forging is stayed in the inside casing mould, let patrix deviate from smoothly.Also obviously shorten die life.(because when cooling the outer surface mold temperature descend soon than the temperature of forging; In addition, the linear expansion coefficient of high temperature alloy is greater than the titanium alloy linear expansion coefficient), and this process generally need be no less than 40 minutes time, sometimes even surpass 1 hour, causes the production efficiency of die forging low.
Tubing, axle journal class and the dish class forging part of certain altitude is arranged, the problem of patrix difficulty is taken off by regular meeting.On the one hand reduce high temperature alloy patrix and forging ejection resistance, guarantee that patrix deviates from smoothly, often adopt the method for increasing demoulding angle to solve, the demoulding angle of design is up to more than 10 °; On the other hand, increase the resistance between housing mould and the forging, guarantee that patrix deviates from smoothly, often adopt the method that reduces housing moulding/demoulding angle to solve.Usually the demoulding angle of design is 0 ° or negative.In actual production process, the demoulding is still very difficult, and product rejection is serious, and production efficiency is low, and demoulding angle is big more, and fabricated part forging part surplus is big more relatively, and the machined part lumber recovery is low more.Increase the resistance between housing mould and the forging in addition, adopt the method that reduces housing moulding/demoulding angle, resistance increased when 0 ° of demoulding angle of design or negative were prone to cause down knock-pin that forging is ejected, thereby caused the forging distortion, caused forging to scrap.
Forging sticking to mould problem becomes the bottleneck on the hollow thin-wall forging shaft process procedure during forging, has hindered the ordinary production of this forging.
The utility model content
The purpose of the utility model is to overcome the defective that exists in the prior art; Design a kind of die forging device of titanium alloy forging; Forging is in the state of being pushed down by the collar and can stick at patrix when the processing thin-walled isothermal forging demoulding, reaches forging part to be convenient in demoulding, and shortens the required time of knockout course; Improve the production efficiency of forging part, prolong die life; In addition, can also solve cooling speed slowly, influence the problem of thin wall shaft forging products qualification rate.
For realizing above-mentioned purpose; The technical scheme of the utility model provides a kind of die forging device of titanium alloy forging, it is characterized in that, said forging die device comprises: top base; Be provided with through hole in the centre of said top base perpendicular to top base; In said through hole, pass a tube-in-tube structure on connecting rod, on said, pass a upper ejector pin in the connecting rod, on said upper ejector pin, be provided with thread segment; Said thread segment be used for spacing nut and be connected, said nut is arranged in the groove that is provided with on the top base; Lower end at said top base is provided with patrix; On said patrix, be provided with the center guide hole that is used to pass said upper ejector pin; On said patrix, also be provided with the slotted eye that radially connects that is communicated with the center guide hole; Said upper ejector pin passes said center guide hole and slotted eye is connected with the patrix bearing pin in its end; Said patrix bearing pin is positioned at said slotted eye and can moves up and down with upper ejector pin, and the two ends of said patrix bearing pin are stretched out said patrix and are connected with a collar, and an end of the said collar is socketed in the outside of said patrix; Lower end at said patrix is provided with counterdie, on said counterdie, is provided with the through hole that is used to hold patrix, the collar and forging, and said counterdie is arranged on the bottom base, on said bottom base, is provided with the through hole that is used to place forging.
Wherein, said top base includes holder and Connection Block, and said holder and Connection Block link together through flange arrangement.
Wherein, said groove runs through said top base, saidly is set on the said holder or on the said Connection Block, and is positioned at the binding site of holder and Connection Block.
The die forging device of this titanium alloy forging is after each die forging finishes; Eject hydraulic means on starting earlier, push down the patrix bearing pin and the collar is pushed down forging, forging is stayed in the lower mode cavity by upper ejector pin; Hydraulic press entablature backhaul then; Drive pedestal, patrix move, and patrix moves (H is the range of patrix bearing pin) between H/2~Hmm, lays down the oil pressure that ejects; Drive pedestal, patrix, the collar, last connecting rod, upper ejector pin and patrix bearing pin by the entablature backhaul again and move simultaneously, can accomplish the patrix demoulding work of thin wall shaft forging.Eject oil cylinder piston under the last press and rise, drive the forging demoulding, and take out forging fast and put into bosh, carry out water-cooled with opening the mould machine by lower push rod.
The utility model forging when the demoulding is in the state of being pushed down by the collar and can stick at patrix; It is too slow and influence the problem of the product quality of hollow thin-wall forging shaft to have solved cooling velocity; Use stripper apparatus that forging part is convenient in demoulding; Shorten the required time of knockout course, improve the production efficiency of forging part, improved die life.
The advantage and the beneficial effect of the utility model are:
1, the utility model seems easily the demoulding of thin wall shaft titanium alloy forging, and a tubing forging demoulding bottleneck difficult problem that always exists is able to thorough solution, lays the foundation for producing like product in batches.
2, because titanium alloy forging adopts this stripper apparatus, demould time reduces significantly.Adopt conventional stripper apparatus, encase the frictional force of the resistance of patrix, make this forging run into " demoulding difficulty is that forging is stained with mould " problem aborning greater than the forging surface when the frictional force of inner surface adds overlap; For forging is taken out, forging and upper die mold are descending, and forging is compressed into die cavity once more; To encase the resistance of patrix quite big because the frictional force of inner surface adds the enclave; Must patrix and forging mould again all be cooled to below 600 ℃,, increase the resistance between forging outer wall and inside casing mould and the pedestal through the temperature difference of interior external mold and the difference of the high temperature alloy and the ferroalloy coefficient of expansion; Forging is stayed in the inside casing mould, let patrix deviate from smoothly.Also obviously shorten die life in addition (because the outer surface mold temperature descends soon than the temperature of forging during cooling; In addition, the linear expansion coefficient of high temperature alloy is greater than the titanium alloy linear expansion coefficient), and this process generally need be no less than 30 minutes time, sometimes even surpass 1 hour, causes the production efficiency of die forging low.Each forging demould time significantly reduces after the utility model die forging, has improved production efficiency greatly.
3, the thin ancient piece of jade, round, flat and with a hole in its centre forging shaft structure property that adopts the utility model to produce also has clear improvement.
Description of drawings
Fig. 1 is existing titanium alloy die forging device die forging thin wall shaft sketch map;
Fig. 2 is the sketch map before the embodiment demoulding in the die forging device of the utility model titanium alloy forging;
Fig. 3 is the sketch map after the embodiment demoulding in the die forging device of the utility model titanium alloy forging;
Fig. 4 a, Fig. 4 b are the die forging device substep demoulding sketch mapes of the utility model titanium alloy forging.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model with this.
Shown in Fig. 2~Fig. 4 b, the utility model is a kind of die forging device of titanium alloy forging, and the forging die device comprises: top base 1; Be provided with through hole 101 perpendicular to top base in the centre of said top base 1; In said through hole 1, pass a tube-in-tube structure on connecting rod 3, on said, pass a upper ejector pin 2 in the connecting rod 3, on said upper ejector pin 2, be provided with thread segment; Said thread segment be used for spacing nut 4 and be connected, said nut 4 is arranged in the groove that is provided with on the top base 1; Be provided with patrix 5 in the lower end of said top base 1; On said patrix 5, be provided with the center guide hole 501 that is used to pass said upper ejector pin 2; On said patrix 5, also be provided with the slotted eye 502 that radially connects that is communicated with center guide hole 5; Said upper ejector pin 2 passes said center guide hole 501 and is connected with patrix bearing pin 6 with slotted eye 502 in its end; Said patrix bearing pin 6 is positioned at said slotted eye 502 and can moves up and down with upper ejector pin 2, and the two ends of said patrix bearing pin 6 are stretched out said patrix 5 and are connected with a collar 7, and an end of the said collar 7 is socketed in the outside of said patrix 5; Be provided with counterdie 8 in the lower end of said patrix 5, on said counterdie 8, be provided with the through hole that is used to hold patrix 5, the collar 7 and forging 10, said counterdie 8 is arranged on the bottom base 9, on said bottom base 9, is provided with the through hole 901 that is used to place forging 10.
Before the die forging, on eject the complete backhaul of hydraulic means.When blank put into patrix 5, counterdie 8, mold cavity after, patrix 5 slowly presses down, and ejects the collar 7 and resets so that make.
During die forging, initial earlier to a less forging pressure, make the mating surface applying of various pieces such as patrix 5 tight; Be forced into final pressure then rapidly, make forging stock extrusion molding within a short period of time.
After forging is full of, eject hydraulic means in the startup, push down patrix bearing pin 6 and the collar 7 is pushed down forging 10 by upper ejector pin 2, forging 10 is stayed in counterdie 8 chambeies, entablature resistance Cheng Fangke drives patrix 5 and moves.
Among Fig. 4 a, Fig. 4 b, P1 is a pressure, and P2 is a knockout press.
The range of patrix bearing pin 6 in patrix is Hmm, so when upper ejector pin 2 was pushed down patrix bearing pin 6, the control patrix moved fortune≤Hmm, when patrix 5 move>=during H/2mm, with the oil pressure that ejects on laying down; The entablature backhaul drives top base 1, patrix 5, the collar 7, upward connecting rod 3, upper ejector pin 2 and patrix bearing pin 6 move simultaneously, can accomplish the patrix demoulding work of thin wall shaft forging.
After the utility model was implemented, the demould time of forging was stained with mould from original forging, and forging can not got or will be consumed the each till now demould time of 1 hour/part and only needs 3~5 minutes, and it is very convenient that the demoulding becomes.Improved production efficiency on the one hand, improved die life on the other hand, moreover improved the performance of forging.In addition, produce any surface finish, TC4 ferroalloy thin wall shaft isothermal forging that structure property is stable through the utility model.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims (3)

1. the die forging device of a titanium alloy forging is characterized in that, said forging die device comprises: top base; Be provided with through hole in the centre of said top base perpendicular to top base; In said through hole, pass a tube-in-tube structure on connecting rod, on said, pass a upper ejector pin in the connecting rod, on said upper ejector pin, be provided with thread segment; Said thread segment be used for spacing nut and be connected, said nut is arranged in the groove that is provided with on the top base; Lower end at said top base is provided with patrix; On said patrix, be provided with the center guide hole that is used to pass said upper ejector pin; On said patrix, also be provided with the slotted eye that radially connects that is communicated with the center guide hole; Said upper ejector pin passes said center guide hole and slotted eye is connected with the patrix bearing pin in its end; Said patrix bearing pin is positioned at said slotted eye and can moves up and down with upper ejector pin, and the two ends of said patrix bearing pin are stretched out said patrix and are connected with a collar, and an end of the said collar is socketed in the outside of said patrix; Lower end at said patrix is provided with counterdie, on said counterdie, is provided with the through hole that is used to hold patrix, the collar and forging, and said counterdie is arranged on the bottom base, on said bottom base, is provided with the through hole that is used to place forging.
2. the die forging device of titanium alloy forging as claimed in claim 1 is characterized in that, said top base includes holder and Connection Block, and said holder and Connection Block link together through flange arrangement.
3. the die forging device of titanium alloy forging as claimed in claim 2 is characterized in that, said groove runs through said top base, saidly is set on the said holder or on the said Connection Block, and is positioned at the binding site of holder and Connection Block.
CN2011202614508U 2011-07-22 2011-07-22 Die forging device for titanium alloy forging piece Expired - Fee Related CN202192194U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202614508U CN202192194U (en) 2011-07-22 2011-07-22 Die forging device for titanium alloy forging piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202614508U CN202192194U (en) 2011-07-22 2011-07-22 Die forging device for titanium alloy forging piece

Publications (1)

Publication Number Publication Date
CN202192194U true CN202192194U (en) 2012-04-18

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Country Status (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105880308A (en) * 2016-05-13 2016-08-24 河南平高电力设备有限公司 Two-time extruding die of moving contact and secondary-extruding die thereof
CN106583631A (en) * 2016-12-01 2017-04-26 贵州安大航空锻造有限责任公司 Near-isothermal forging formation method for TC4 titanium alloy hollow shaft neck forged piece
CN106670374A (en) * 2016-12-01 2017-05-17 贵州安大航空锻造有限责任公司 Near-isothermal forging forming method for Ti6242 titanium alloy hollow shaft journal forged piece
CN106694788A (en) * 2016-12-01 2017-05-24 贵州安大航空锻造有限责任公司 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105880308A (en) * 2016-05-13 2016-08-24 河南平高电力设备有限公司 Two-time extruding die of moving contact and secondary-extruding die thereof
CN106583631A (en) * 2016-12-01 2017-04-26 贵州安大航空锻造有限责任公司 Near-isothermal forging formation method for TC4 titanium alloy hollow shaft neck forged piece
CN106670374A (en) * 2016-12-01 2017-05-17 贵州安大航空锻造有限责任公司 Near-isothermal forging forming method for Ti6242 titanium alloy hollow shaft journal forged piece
CN106694788A (en) * 2016-12-01 2017-05-24 贵州安大航空锻造有限责任公司 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120418

Termination date: 20140722

EXPY Termination of patent right or utility model