CN204018405U - For plastic deformation, squeeze the crowded forging assembly of forging molding - Google Patents
For plastic deformation, squeeze the crowded forging assembly of forging molding Download PDFInfo
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- CN204018405U CN204018405U CN201420404995.3U CN201420404995U CN204018405U CN 204018405 U CN204018405 U CN 204018405U CN 201420404995 U CN201420404995 U CN 201420404995U CN 204018405 U CN204018405 U CN 204018405U
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Abstract
The utility model discloses a kind of crowded forging assembly that squeezes forging molding for plastic deformation, comprise and squeeze swaging and squeeze for driving the crowded forging driving mechanism that swaging squeezes forging stock material, squeezing forging assembly is provided with for squeeze the crowded hole head in hole on blank, squeeze hole head and forge direction and be slidedly arranged on and squeeze in swaging along squeezing, squeeze and forge assembly and be also provided with to drive and squeeze hole head and stretch out and squeeze swaging and on blank, squeeze hole and after extrusion cavities, make to squeeze a hole retraction and squeeze swaging and jointly squeeze the crowded hole driving mechanism of forging stock material with crowded swaging.The utlity model has simple and compact for structure, with low cost, energy consumption is low, required crowded forging power is little, can reduce and squeeze forging molding difficulty, improve the advantages such as shaping workpiece internal performance and quality.
Description
Technical field
The utility model relates to metal and squeezes forging molding technical field, is specifically related to a kind of crowded forging assembly that squeezes forging molding for plastic deformation.
Background technology
It is to utilize Principles of Metal Forming to carry out a kind of method of pressure processing that metal squeezes forging molding technology, to put into mould through pretreated metal stock, then on metal stock, exert pressure and make metal stock generation be out of shape and be full of mold cavity, thereby obtain needed part.It is a kind of few cutting or without the advanced technologies technology of machining that metal squeezes forging molding technology, be conducive to improve the quality of goods, can improve goods interior microscopic tissue and performance, also have save that material, energy consumption are low, applied range, production flexibility is large, technological process is simple and equipment investment is few feature.
At present, also there are a lot of technical problems in hot extrude forging molding technology and hot extrude forging molding equipment both at home and abroad, restricted the development of this technology.
The general employing of connection of existing crowded swaging and main cylinder piston-rod is threaded, and within the scope of screw strength, squeezes swaging hydraulic energy is acted directly on to workpiece blank surface, thereby make workpiece blank distortion.Squeeze swaging and contact once crowded forging molding with workpiece blank, because lifting surface area is larger, must there is very large pressure just can make workpiece blank produce plastic deformation, squeeze forging difficulty crowded forging power large, that need also larger, this performance to hydraulic system and mould is had higher requirement, and equipment cost and energy consumption also improve greatly; And if adopt repeatedly deformation moulding, what need multiple devices repeatedly squeezes the requirements such as precision that forging could meet parts, causes existing former and energy supply system complicated, equipment bulky, investment is large, cost is high; In addition, because workpiece blank reaches needed shape through disposable continuous plastic deformation, in squeezing forging process, metal inside crystalline phase organizes mobility large, and this also can affect the internal structure performance of shaping workpiece, reduces the quality of shaping workpiece.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiency that prior art exists, provide a kind of simple and compact for structure, with low cost, energy consumption is low, required crowded forging power is little, can reduce squeeze forging molding difficulty, improve shaping workpiece internal performance and quality for plastic deformation, squeeze the crowded forging assembly of forging molding.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of crowded forging assembly that squeezes forging molding for plastic deformation, comprise and squeeze swaging and for driving described crowded swaging to squeeze the crowded forging driving mechanism of forging stock material, described crowded forging assembly is provided with for squeeze the crowded hole head in hole on blank, described crowded hole head is forged direction and is slidedly arranged in described crowded swaging along squeezing, and described crowded forging assembly is also provided with to drive and squeezes hole head and stretch out and squeeze swaging and on blank, squeeze hole and after extrusion cavities, make to squeeze a hole retraction and squeeze swaging and jointly squeeze the crowded hole driving mechanism of forging stock material with crowded swaging.
As further improvement of the utility model:
Described crowded hole driving mechanism is connected and relies on the driving force of squeezing forging driving mechanism to make to squeeze Tou Ji hole, hole with the crowded driving mechanism of forging.
Described crowded hole driving mechanism comprises the unidirectional oil cylinder being connected with the drive end of described crowded forging driving mechanism, and the oil-in of described unidirectional oil cylinder is provided with the control valve group of carrying out off-load when oil pressure reaches setting value in unidirectional oil cylinder.
Described control valve group comprises the on-off valve of being controlled break-make by electro connecting pressure gauge.
Described crowded forging driving mechanism comprises telescopic oil cylinder, and the cylinder body of described unidirectional oil cylinder is integrally formed on the expansion link of described telescopic oil cylinder.
The oil-in of described unidirectional oil cylinder is also connected with passive type overpressure unloading valve, described passive type overpressure unloading valve comprises valve body and is slidedly arranged on the spool in described valve body, described spool is provided with the first hydraulic-driven portion vertically successively, the second hydraulic-driven portion and the 3rd hydraulic-driven portion, described valve body is provided with the first pressure oil cavity that is communicated with and drives the first hydraulic-driven portion with the low pressure oil way of hydraulic system, the 3rd pressure oil cavity that is communicated with the oil-in of unidirectional oil cylinder and drives the second pressure oil cavity of the second hydraulic-driven portion and be communicated with and drive the 3rd hydraulic-driven portion with the low pressure oil way of hydraulic system, the driving direction of described the second hydraulic-driven portion and the 3rd hydraulic-driven portion is in the same way and contrary with the driving direction of the first hydraulic-driven portion, the oil pressure active area that the oil pressure active area of described the first hydraulic-driven portion is greater than described the second hydraulic-driven portion adds the oil pressure active area sum of the above the 3rd hydraulic-driven portion, described spool makes the oil-in of described unidirectional oil cylinder and the low pressure oil way of hydraulic system be communicated with or disconnect by slip.
Described spool comprises the slide bar portion being slidedly arranged in described valve body, one end of described slide bar portion forms described the 3rd hydraulic-driven portion, the middle part of described slide bar portion arranges boss and forms described the second hydraulic-driven portion, and described the first hydraulic-driven portion is removably connected to the other end of described slide bar portion; Described the first pressure oil cavity and the 3rd pressure oil cavity lay respectively at the two ends of described spool, and described the second pressure oil cavity is positioned at the middle part of described spool.
The middle part of described crowded swaging is provided with along squeezing and forges the through hole that direction runs through, and described crowded hole head is slidedly arranged in described through hole.
One end of described through hole is provided with pilot hole, and the end of described crowded hole head is provided with the slide block being slidably matched with described pilot hole.
The drive end of described crowded forging driving mechanism is connected with die holder, and described die holder is provided with stepped hole, and described crowded swaging is fixed in described stepped hole.
Compared with prior art, the utility model has the advantage of: the utility model squeezes the crowded forging assembly of forging molding for plastic deformation, be provided with and squeeze swaging and crowded hole head, while squeezing the moulding of forging stock material, under the driving of Tou Ji hole, crowded hole driving mechanism, first on blank, squeeze hole, make blank complete a plastic deformation, when certain depth is arrived in crowded hole, make to squeeze a hole retraction to concordant with the crowded forging end face of crowded swaging, then make crowded swaging and a crowded hole synchronization action blank can be squeezed to forging molding.This crowded assembly of forging is according to squeezing hole, dodging, squeeze the crowded forging stock material of the process of forging, first on blank, squeezing hole makes blank complete a certain amount of distortion, squeeze forging whole blank makes blank deformation be full of whole die cavity and backfill is also full of the hole of extruding again, make blank at twice plastic deformation obtain shaping workpiece, on the one hand, extended the crowded forging time, it is less that blank is out of shape required crowded forging power at every turn, reduced crowded forging difficulty, the performance requirement of equipment has also been reduced; On the other hand, the effect that shunting material is played in the hole of extruding, can improve the flow regime of metal and the filling of blank, has improved the internal structure performance of shaping workpiece; Moreover, squeezing Tou Youji hole, hole driving mechanism and drive sliding extension, it also can be used for the workpiece after moulding to eject, and has realized the integrated of crowded hole and discharging.This squeeze to forge assembly simple and compact for structure, cost is low, having stable behavior is reliable, energy consumption is low, operating efficiency is high, also low to the requirement of the requirement of equipment component and dynamical system, greatly reduce the difficulty of squeezing forging molding.
Accompanying drawing explanation
The sectional structure schematic diagram of Fig. 1 crowded forging assembly that to be the utility model squeeze forging molding for plastic deformation when squeezing hole head and stretch out.
The sectional structure schematic diagram of Fig. 2 crowded forging assembly that to be the utility model squeeze forging molding for plastic deformation when squeezing hole retraction.
Fig. 3 is that the utility model squeezes the sectional structure schematic diagram of the crowded forging assembly passive type overpressure unloading valve of forging molding for plastic deformation.
Fig. 4 is that the utility model is for the sectional structure schematic diagram of the spool of the crowded forging assembly passive type overpressure unloading valve of the crowded forging molding of plastic deformation.
Marginal data:
1, squeeze swaging; 11, through hole; 111, pilot hole; 2, squeeze and forge driving mechanism; 3, squeeze hole head; 31, slide block; 4, squeeze hole driving mechanism; 41, unidirectional oil cylinder; 42, control valve group; 5, die holder; 51, stepped hole; 6, passive type overpressure unloading valve; 61, valve body; 611, the first pressure oil cavity; 612, the second pressure oil cavity; 613, the 3rd pressure oil cavity; 614, break-make mouth; 62, spool; 621, the first hydraulic-driven portion; 622, the second hydraulic-driven portion; 623, the 3rd hydraulic-driven portion; 63, flexible member; 64, oil drain passage.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, the utility model squeezes the crowded forging assembly of forging molding for plastic deformation, comprise and squeeze swaging 1 and squeeze for driving the crowded forging driving mechanism 2 that swaging 1 squeezes forging stock material, also be provided with on blank, squeeze hole crowded hole 3 and with a crowded hole 3 crowded hole driving mechanism 4 that are connected, squeeze hole 3 and forge directions and be slidedly arranged on and squeeze in swaging 1 along squeezing, squeeze hole driving mechanism 4 can drive squeeze hole 3 stretch out squeeze swaging 1 on blank, squeeze hole and after extrusion cavities, make to squeeze hole 3 retraction squeeze swaging 1 and with the common forging stock material that squeezes of crowded swaging 1.While squeezing the moulding of forging stock material, squeeze hole 3 and under the driving of squeezing hole driving mechanism 4, first on blank, squeeze hole, make blank complete a plastic deformation, when certain depth is arrived in crowded hole, make to squeeze hole 3 retraction to concordant with the crowded forging end face of crowded swaging 1, then make crowded swaging 1 and crowded hole 3 synchronization action blank can be squeezed to forging molding.
This crowded assembly of forging is according to squeezing hole, dodging, squeeze the crowded forging stock material of the process of forging, first on blank, squeezing hole makes blank complete a certain amount of distortion, squeeze forging whole blank makes blank deformation be full of whole die cavity and backfill is also full of the hole of extruding again, make blank at twice plastic deformation obtain shaping workpiece, on the one hand, extended the crowded forging time, it is less that blank is out of shape required crowded forging power at every turn, reduced crowded forging difficulty, the performance requirement of equipment has also been reduced; On the other hand, the effect that shunting material is played in the hole of extruding, can improve the flow regime of metal and the filling of blank, has improved the internal structure performance of shaping workpiece; Moreover, squeezing hole 3 by crowded hole driving mechanism 4 driving sliding extensions, it also can be used for the workpiece after moulding to eject, and has realized the integrated of crowded hole and discharging.Crowded forging assembly of the present utility model is particularly useful for the hot extrude forging molding of metal, can squeeze the part of forging shape face complexity, as dish type spur gear, biconvex through hole spur gear, gear shaft, multidiameter, through hole annulus, various flange, large specification securing member and various revolutions etc.
In the present embodiment, squeezing forging driving mechanism 2 is connected with crowded hole driving mechanism 4, squeezing while forging driving mechanism 2 work drives crowded swaging 1 and crowded hole driving mechanism 4 to be synchronized with the movement, squeezing hole driving mechanism 4 is to rely on crowded driving force of forging driving mechanism 2 to make to squeeze the passive type driving mechanism in a 3 crowded hole, hole, squeezing hole driving mechanism 4 can drive and squeeze hole 3 and stretch out to squeeze crowded forging end faces for swaging 1 and keep squeezing hole 3 and be in the state of stretching out, also can make to squeeze hole 3 retraction squeezes in swaging 1, but when squeezing hole, squeeze hole driving mechanism 4 active drive power is not provided, it moves to the direction of squeezing forging stock material by squeezing 2 drivings of forging driving mechanism, and then with crowded hole 3, on blank, squeeze hole.
Above-mentioned passive type driving mechanism specifically comprises the unidirectional oil cylinder 41 being connected with the drive end that squeezes forging driving mechanism 2, and the oil-in of unidirectional oil cylinder 41 is provided with the control valve group 42 of carrying out off-load when the interior oil pressure of unidirectional oil cylinder 41 reaches setting value.Control valve group 42 is by electro connecting pressure gauge, to be controlled the on-off valve of break-make, for example, adopts the combination of electro connecting pressure gauge, magnetic valve and inserted valve, by electro connecting pressure gauge detected pressures, then by solenoid control inserted valve break-make.Opening on-off valve can inject pressure oil in unidirectional oil cylinder 41, the expansion link of unidirectional oil cylinder 41 stretches out and makes to squeeze hole 3 and stretch out the crowded forging end face that squeezes swaging 1, closing on-off valve can make the expansion link of unidirectional oil cylinder 41 keep stretching out state again, and then crowded hole 3 also keeps stretching out the state of the crowded forging end face that squeezes swaging 1, electro connecting pressure gauge can detect the oil pressure in the pressure oil cavity of unidirectional oil cylinder 41, then according to the force value whether this oil pressure reaches its setting, carrys out the break-make of corresponding control on-off valve.Oil pressure while squeezing hole in the pressure oil cavity of unidirectional oil cylinder 41 can raise because of the rising of blank reaction force, after reaching the force value of electro connecting pressure gauge setting, electro connecting pressure gauge is controlled on-off valve and is opened unidirectional oil cylinder 41 is carried out to off-load, thereby make to squeeze hole 3, can forge retraction under reaction force and squeeze in swaging 1 squeezing.Because Kong Yueshen is squeezed in crowded hole 3 on blank, blank is larger to squeezing the reaction force in hole 3, oil pressure in the pressure oil cavity of unidirectional oil cylinder 41 is also higher, therefore the oil pressure value in the pressure oil cavity of unidirectional oil cylinder 41 has also reacted 3 position of clamp-oning blank, crowded hole, squeeze as required the degree of depth in hole, relative set electro connecting pressure gauge is controlled the force value that on-off valve is opened.This kind of drives structure only need adopt a set of driving mechanism, by one-off, can complete crowded hole, dodge and crowded forging molding, do not need to increase force piece and auxiliary control device, also can not increase the burden of dynamical system, further reduced energy consumption, improve operating efficiency high, saved equipment cost.
In the present embodiment, squeezing and forging driving mechanism 2 is telescopic oil cylinder, and the cylinder body of unidirectional oil cylinder 41 is integrally formed on the expansion link of telescopic oil cylinder.On the expansion link of telescopic oil cylinder, offer cavity and oil-in, after the piston that then setting matches in this cavity, form unidirectional oil cylinder 41, arrange like this and can reduce costs, improve the compact of equipment.
In the present embodiment, the oil-in of unidirectional oil cylinder 41 is also connected with passive type overpressure unloading valve 6, the pressure unloading of passive type overpressure unloading valve 6 is greater than the force value that electro connecting pressure gauge is set, when control valve group 42 breaks down, passive type overpressure unloading valve 6 carries out release after can the oil pressure in unidirectional oil cylinder 41 reaching its setting value, avoid damaging unidirectional oil cylinder 41 and other hydraulic pressure components and parts because of hypertonia, also ensured staff's safety, especially at plastic deformation, squeeze in forging equipment, because of the oil pressure of its hydraulic system, to have reached tens MPas even higher, if as easy as rolling off a log the causing casualties of hydraulic oil ejection.
As shown in Figure 3 and Figure 4, passive type overpressure unloading valve 6 comprises spool 62 and valve body 61, and spool 62 is slidedly arranged in valve body 61, and spool 62 is revolving body, and the inner chamber coordinating with spool 62 on valve body 61 is cylindrical cavity.Spool 62 is provided with the first hydraulic-driven portion 621 vertically successively, the second hydraulic-driven portion 622 and the 3rd hydraulic-driven portion 623, valve body 61 is provided with the first pressure oil cavity 611, the second pressure oil cavity 612 and the 3rd pressure oil cavity 613, wherein, the low pressure oil way of the first pressure oil cavity 611 and hydraulic system (for example, main working oil path from oil pump or Hydraulic Station output) be communicated with, the first pressure oil cavity 611 coordinates driving spool 62 to slide with the first hydraulic-driven portion 621, the second pressure oil cavity 612 is communicated with the oil-in of unidirectional oil cylinder 41, the second pressure oil cavity 612 coordinates driving spool 62 to slide with the second hydraulic-driven portion 622, the 3rd pressure oil cavity 613 is communicated with the low pressure oil way of hydraulic system, the 3rd pressure oil cavity 613 coordinates driving the 3rd hydraulic-driven portion 623 to drive spools 62 to slide with the 3rd hydraulic-driven portion 623.The driving direction of the second pressure oil cavity 612 and the 3rd pressure oil cavity 613 is in the same way, and contrary with the driving direction of the first pressure oil cavity 611, and the hydraulic-driven area of the first hydraulic-driven portion 621 hydraulic-driven area that is greater than the second hydraulic-driven portion 622 adds the hydraulic-driven area sum of the 3rd hydraulic-driven portion 623.Spool 62 is according to the first hydraulic-driven portion 621, the suffered corresponding slip of driving force situation of the second hydraulic-driven portion 622 and the 3rd hydraulic-driven portion 623, and spool 62 makes the oil-in of unidirectional oil cylinder 41 and the low pressure oil way of hydraulic system be communicated with or disconnect by slip.Above-mentioned oil pressure active area refers to that each pressure oil cavity drives the actual driving area of corresponding hydraulic-driven portion.
In the present embodiment, the 3rd pressure oil cavity 613 is provided with and can makes the end of break-make mouth 614, the three hydraulic-driven portions 623 that the oil-in of unidirectional oil cylinder 41 and the low pressure oil way of hydraulic system be communicated with slide and make break-make mouth 614 open or close with spool 62.Specifically, break-make mouth 614 is between the 3rd pressure oil cavity 613 and the second pressure oil cavity 612, the end of the 3rd hydraulic-driven portion 623 and break-make mouth 614 are equipped with taper seat, when spool 62 slides, can make the taper seat of end and the laminating of the taper seat of break-make mouth 614 of the 3rd hydraulic-driven portion 623 form a ring seal face, break-make mouth 614 is closed, or make the end of the 3rd hydraulic-driven portion 623 away from break-make mouth 614, break-make mouth 614 is opened.When the first suffered driving force of hydraulic-driven portion 621 is greater than the suffered driving force of the second hydraulic-driven portion 622 and the suffered driving force sum of the 3rd hydraulic-driven portion 623, spool 62 slides to the direction of closing break-make mouth 614, break-make mouth 614 is closed in end face and 614 laminatings of break-make mouth of the 3rd hydraulic-driven portion 623, and the second pressure oil cavity 612 and the 3rd pressure oil cavity 613 are not communicated with, when the first suffered driving force of hydraulic-driven portion 621 is less than the suffered driving force of the second hydraulic-driven portion 622 and the suffered driving force sum of the 3rd hydraulic-driven portion 623, spool 62 slides to the direction of opening break-make mouth 614, the end face of the 3rd hydraulic-driven portion 623 and break-make mouth 614 depart from, break-make mouth 614 is communicated with the second pressure oil cavity 612 and the 3rd pressure oil cavity 613, now, passive type overpressure unloading valve 6 carries out off-load, the hydraulic oil of unidirectional oil cylinder 41 is discharged in the 3rd pressure oil cavity 613 by the second pressure oil cavity 612, also be discharged in the low pressure oil way of hydraulic system.
In the present embodiment, between valve body 61 and spool 62, be provided with flexible member 63, flexible member 63 is coil tension spring, this coil tension spring is pressed between the inwall and spool 62 of the first pressure oil cavity 611, in the situation that the first pressure oil cavity 611, the second pressure oil cavity 612 and the 3rd pressure oil cavity 613 do not pass into pressure oil, coil tension spring elastic compression spool 62, makes spool 62 be in the position of closing break-make mouth 614.
In the present embodiment, spool 62 comprises the slide bar portion being slidedly arranged in valve body 61, one end of slide bar portion forms the 3rd hydraulic-driven portion 623, the middle part of slide bar portion arranges annular boss and forms the second hydraulic-driven portion 622, the first hydraulic-driven portion 621 and slide bar portion are Split type structure, the first hydraulic-driven portion 621 is installed in the first pressure oil cavity 611, and first hydraulic-driven portion 621 other end direct and slide bar portion offsets.The first pressure oil cavity 611 and the 3rd pressure oil cavity 613 lay respectively at the two ends of spool 62, and the second pressure oil cavity 612 is positioned at the middle part of spool 62.
In the present embodiment, be also provided with oil drain passage 64 on valve body 61, oil drain passage 64 is communicated with the inner chamber that valve body 61 coordinates with slide bar portion, and oil drain passage 64 is located at the position near the first pressure oil cavity 611.This oil drain passage 64 can be discharged the hydraulic oil oozing from the second pressure oil cavity 612 to the first pressure oil cavity 611, carries out release, avoids affecting the pressure in the first pressure oil cavity 611, has guaranteed reliability and the accuracy of work.
The operation principle of passive type overpressure unloading valve 6:
The first pressure oil cavity 611 is connected with the pressure oil circuit of hydraulic system with the 3rd pressure oil cavity 613, and the second pressure oil cavity 612 is connected with the oil-in of unidirectional oil cylinder 41.As shown in Figure 2, the oil pressure active area of the first hydraulic-driven portion 621 is S
1, the oil pressure active area of the second hydraulic-driven portion 622 is (S
2-S
3), the oil pressure active area of the 3rd hydraulic-driven portion 623 is S
3.The oil pressure of supposing the system pressure oil circuit is P
1, the operating oil pressure of unidirectional oil cylinder 41 is P
2, do not consider the 3rd hydraulic-driven portion 623 and the fitting area of boss and the elastic compression power of flexible member 63.
The pass valve power of passive type overpressure unloading valve 6 is P
1s
1, valve opening force is P
2(S
2-S
3)+P
1s
3, make spool 62 open, just must make P
1s
1< P
2(S
2-S
3)+P
1s
3, the oil pressure active area that is greater than the second hydraulic-driven portion 622 due to the oil pressure active area of the first hydraulic-driven portion 621 adds the oil pressure active area sum of the 3rd hydraulic-driven portion 623, is also S
1> (S
2-S
3)+S
3, therefore, only at P
2> P
1situation under just can make P
1s
1< P
2(S
2-S
3)+P
1s
3.Like this, passive type overpressure unloading valve 6 can make unidirectional oil cylinder 41 have the operating oil pressure higher than the oil pressure of system pressure oil circuit, as the operating oil pressure P of unidirectional oil cylinder 41
2reach enough height, make P
1s
1< P
2(S
2-S
3)+P
1s
3time, just can drive spool 62 to open and carry out off-load.The size of unidirectional oil cylinder 41 back pressures is by S
1, S
2, S
3size determine, but when designing and producing, can only change S
1size, this is also the first hydraulic-driven portion 621 of spool 62 to be made to the object of separated sliding part, is convenient to make the passive type overpressure unloading valve 6 with different back pressures.
Above-mentioned passive type overpressure unloading valve 6 adopts three pressure oil cavities to coordinate driving spool 62 to slide with three hydraulic-driven portions and controls off-load, by being rationally set, the hydraulic-driven area of each hydraulic-driven portion can control the pressure of off-load, also control the maximum working pressure of unidirectional oil cylinder 41, both can to oil cylinder 41, there is the operating pressure higher than the low pressure oil way of hydraulic system by bonding, can, when the high-pressure oil passage superpressure of unidirectional oil cylinder 41, by driving spool 62 to slide, carry out off-load again; Meanwhile, its off-load is that the hydraulic oil of high-pressure oil passage is discharged in low pressure oil way, and hydraulic energy is reused, and has reduced the requirement of system energy supply, has reached the object of energy-conserving and environment-protective, has also reduced production cost; It is realized opening and closing by hydraulically powered mechanical structure and moves, and there will not be the situation of being failure to actuate or botching routines, and has guaranteed the reliability of work.This passive type overpressure unloading valve 6 can directly install that be applied to need to be by the hydraulic oil off-load of high-pressure oil passage in the hydraulic system of low pressure oil way, only each pressure oil cavity directly need be connected with the pressure oil in hydraulic system, do not need to arrange other auxiliary Hydraulic Elements and electrical equipments, have simple in structure, be easy to make, be active in one's movements, safe and reliable, control the advantages such as convenient.The above-mentioned on-off valve of being controlled by electro connecting pressure gauge and valve body 61 are located on same valve piece, make structure compacter, and have saved cost of manufacture.
Certainly, in other embodiments, squeezing hole driving mechanism 4 can be also other forms of passive type driving mechanism.For example, the combination of unidirectional oil cylinder 41 and locking pin, first by unidirectional oil cylinder 41, drive and squeeze holes 3 and stretch out and squeeze swaging 3, by locking pin locking, squeezing hole 3 makes its maintenance stretch out the state of the crowded forging end face that squeezes swaging 1, squeeze Kong Houzai and remove the locking effect of locking pin, making to squeeze hole 3 can forge retraction under reaction force and squeeze in swaging 1 squeezing.Or the combination of weight member and locking pin, by weight member, pull and squeeze hole 3 and stretch out and squeeze swaging 3, by locking pin locking, squeezing hole 3 makes its maintenance stretch out the state of the crowded forging end face that squeezes swaging 1, squeeze Kong Houzai and remove the locking effect of locking pin, making to squeeze hole 3 can forge retraction under reaction force and squeeze in swaging 1 squeezing.
In the present embodiment, drive end that squeeze to forge driving mechanism 2 is connected with die holder 5, and die holder 5 is provided with stepped hole 51, squeezes swaging 1 and is fixed in stepped hole 51.The middle part of squeezing swaging 1 is provided with along squeezing forges the through hole 11 that direction runs through, one end of through hole 11 is provided with pilot hole 111, squeezing hole 3 is slidedly arranged in through hole 11, simultaneously in the end of squeezing hole 3, be provided with the slide block 31 being slidably matched with pilot hole 111, by coordinating of slide block 31 and pilot hole 111, the job stability that makes to squeeze hole 3 is better.The expansion link of unidirectional oil cylinder 41 is fixedly connected with slide block 31 through the hole that connects die holder 5, and when the expansion link of unidirectional oil cylinder 41 moves to the limes superiors position offseting with inner chamber of cylinder block upper wall, the crowded forging end face in crowded hole 3 is also just in time concordant with the crowded forging end face of crowded swaging 1.
The crowded forging assembly that the utility model squeezes forging molding for plastic deformation coordinates the course of work of crowded forging stock material as follows with mould:
While squeezing forging stock material, first by electro connecting pressure gauge, controlling on-off valve opens, to injection pressure oil in the rodless cavity of unidirectional oil cylinder 41, the expansion link of unidirectional oil cylinder 41 makes to squeeze hole 3 and stretches out the crowded forging end face that squeezes swaging 1, then controls on-off valve and disconnects and make to squeeze hole 3 and remain on the state that stretches out the crowded forging end face that squeezes swaging 1.
Squeeze to forge driving mechanism 2 and drive and squeeze swaging 1 and unidirectional oil cylinder 41 is synchronized with the movement to the direction of squeezing forging stock material, squeeze hole 3 and also with unidirectional oil cylinder 41, to the direction of squeezing forging stock material, be synchronized with the movement.In this process, squeeze hole 3 and contact and squeeze hole with blank prior to squeezing swaging 1, because the pressure oil in unidirectional oil cylinder 41 is closed, be equivalent to incompressible rigid body, make the crowded hole 3 can be because of the crowded swaging 1 of blank reaction force retraction when crowded hole.But along with squeezing hole 3 increase of squeezing hole depth, squeeze hole 3 reaction force that are subject to blank and increase gradually, the oil pressure in unidirectional oil cylinder 41 also increases thereupon gradually.Squeeze a 3 crowded hole, hole after certain depth, the oil pressure in unidirectional oil cylinder 41 reaches the setup pressure value of electro connecting pressure gauge, and now electro connecting pressure gauge control on-off valve is opened unidirectional oil cylinder 41 is carried out to release.Squeezing forging driving mechanism 2 continues to drive crowded swaging 1 and unidirectional oil cylinder 41 to be synchronized with the movement to the direction of squeezing forging stock material, because crowded swaging 1 and the crowded driving mechanism 2 of forging are rigidly connected, it continues motion and squeezes forging stock material, and squeeze the expansion link active force that hole 3 has lost unidirectional oil cylinder 41, its under the active force of blank deformation to the interior retraction of crowded swaging 1, until make the expansion link of unidirectional oil cylinder 41 move to limes superiors position, the crowded forging end face that squeezes hole 3 also just in time keeps concordant with the crowded forging end face of crowded swaging 1.Finally, squeezing under the 2 continuation drivings of forging driving mechanism, squeezing a swaging 1 and crowded hole 3 common crowded forging stock material to moulding.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment.For those skilled in the art, do not departing under the utility model technical conceive prerequisite resulting improvement and conversion also should be considered as protection domain of the present utility model.
Claims (10)
1. a crowded forging assembly that squeezes forging molding for plastic deformation, comprise crowded swaging (1) and for driving described crowded swaging (1) to squeeze the crowded forging driving mechanism (2) of forging stock material, it is characterized in that: described crowded forging assembly is provided with for squeeze the crowded hole head (3) in hole on blank, described crowded hole head (3) is slidedly arranged in described crowded swaging (1) along squeezing forging direction, described crowded forging assembly is also provided with and can drives crowded hole head (3) to stretch out crowded swaging (1) crowded hole on blank, and after extrusion cavities, making to squeeze hole head (3) retraction squeezes swaging (1) and jointly squeezes the crowded hole driving mechanism (4) of forging stock material with crowded swaging (1).
2. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 1, is characterized in that: described crowded hole driving mechanism (4) is connected and relies on the driving force of squeezing forging driving mechanism (2) to make to squeeze the crowded hole of hole head (3) with the crowded driving mechanism (2) of forging.
3. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 2, it is characterized in that: described crowded hole driving mechanism (4) comprises the unidirectional oil cylinder (41) being connected with the drive end of described crowded forging driving mechanism (2), the oil-in of described unidirectional oil cylinder (41) is provided with the control valve group (42) of carrying out off-load when oil pressure reaches setting value in unidirectional oil cylinder (41).
4. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 3, is characterized in that: described control valve group (42) comprises the on-off valve of being controlled break-make by electro connecting pressure gauge.
5. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 3, is characterized in that: described crowded forging driving mechanism (2) comprises telescopic oil cylinder, and the cylinder body of described unidirectional oil cylinder (41) is integrally formed on the expansion link of described telescopic oil cylinder.
6. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 3, it is characterized in that: the oil-in of described unidirectional oil cylinder (41) is also connected with passive type overpressure unloading valve (6), described passive type overpressure unloading valve (6) comprises valve body (61) and is slidedly arranged on the spool (62) in described valve body (61), described spool (62) is provided with the first hydraulic-driven portion (621) vertically successively, the second hydraulic-driven portion (622) and the 3rd hydraulic-driven portion (623), described valve body (61) is provided with the first pressure oil cavity (611) that is communicated with the low pressure oil way of hydraulic system and drives the first hydraulic-driven portion (621), the 3rd pressure oil cavity (613) that is communicated with and drives second pressure oil cavity (612) of the second hydraulic-driven portion (622) and be communicated with and drive the 3rd hydraulic-driven portion (623) with the low pressure oil way of hydraulic system with the oil-in of unidirectional oil cylinder (41), the driving direction of described the second hydraulic-driven portion (622) and the 3rd hydraulic-driven portion (623) is in the same way and contrary with the driving direction of the first hydraulic-driven portion (621), the oil pressure active area that the oil pressure active area of described the first hydraulic-driven portion (621) is greater than described the second hydraulic-driven portion (622) adds the oil pressure active area sum of the above the 3rd hydraulic-driven portion (623), described spool (62) makes the oil-in of described unidirectional oil cylinder (41) be communicated with or disconnect with the low pressure oil way of hydraulic system by slip.
7. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 6, it is characterized in that: described spool (62) comprises the slide bar portion being slidedly arranged in described valve body (61), one end of described slide bar portion forms described the 3rd hydraulic-driven portion (623), the middle part of described slide bar portion arranges boss and forms described the second hydraulic-driven portion (622), and described the first hydraulic-driven portion (621) is removably connected to the other end of described slide bar portion; Described the first pressure oil cavity (611) and the 3rd pressure oil cavity (613) lay respectively at the two ends of described spool (62), and described the second pressure oil cavity (612) is positioned at the middle part of described spool (62).
8. according to the crowded forging assembly for the crowded forging molding of plastic deformation described in any one in claim 1 ~ 7, it is characterized in that: the middle part of described crowded swaging (1) is provided with along squeezing and forges the through hole (11) that direction runs through, and described crowded hole head (3) is slidedly arranged in described through hole (11).
9. the crowded forging assembly that squeezes forging molding for plastic deformation according to claim 8, it is characterized in that: one end of described through hole (11) is provided with pilot hole (111), the end of described crowded hole head (3) is provided with the slide block (31) being slidably matched with described pilot hole (111).
10. according to the crowded forging assembly for the crowded forging molding of plastic deformation described in any one in claim 1 ~ 7, it is characterized in that: the drive end of described crowded forging driving mechanism (2) is connected with die holder (5), described die holder (5) is provided with stepped hole (51), and described crowded swaging (1) is fixed at (51) in described stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404995.3U CN204018405U (en) | 2014-07-22 | 2014-07-22 | For plastic deformation, squeeze the crowded forging assembly of forging molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404995.3U CN204018405U (en) | 2014-07-22 | 2014-07-22 | For plastic deformation, squeeze the crowded forging assembly of forging molding |
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| Publication Number | Publication Date |
|---|---|
| CN204018405U true CN204018405U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404995.3U Withdrawn - After Issue CN204018405U (en) | 2014-07-22 | 2014-07-22 | For plastic deformation, squeeze the crowded forging assembly of forging molding |
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| Country | Link |
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| CN (1) | CN204018405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138917B (en) * | 2014-07-22 | 2016-03-23 | 株洲市文佳实业有限公司 | The crowded forging assembly of forging molding is squeezed for plastic deformation |
-
2014
- 2014-07-22 CN CN201420404995.3U patent/CN204018405U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138917B (en) * | 2014-07-22 | 2016-03-23 | 株洲市文佳实业有限公司 | The crowded forging assembly of forging molding is squeezed for plastic deformation |
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| AV01 | Patent right actively abandoned |
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