Four-striker forging press

FIELD: plastic working of metals, possibly forging ingots and billets in hydraulic forging presses and radial-squeezing machines.

SUBSTANCE: press includes two holders of upper and lower strikers with inclined faces; two holders of lateral strikers having kinematics coupling with above mentioned two holders and also having inclined face; mounted on inclined faces anti-friction plates and four strikers. Press is provided with system for cooling strikers and their holders. Cooling system includes valve for supplying water, manifolds for feeding and draining water, pipelines and flexible hoses. In striker holders and strikers ducts are formed. Pipelines going out from water supply manifold are communicated with ducts of striker holders and of strikers. Said ducts at other side are communicated through pipelines with water draining manifold. Ducts of striker holders are arranged under zones of mounting anti-friction plates; ducts of strikers are arranged under their working surfaces.

EFFECT: increased operational time period of anti-friction plates and strikers due to removing excess heat from them.

2 cl, 3 dwg

 

The invention relates to the field of metal forming, namely chetyrehochkovym forging devices, and can be used in the forging of ingots and billets on hydraulic forging presses and radial crimp machines.

The invention can be used in machine-building and metallurgical industry for the production of products with a long axis, for example, rods, columns, intermediate shafts, torsion bars, rolls of rolling mills and similar products, as well as in the production of forged blanks for further processing pressure, for example forging structural, stainless, heat resisting and other hard steels and alloys.

Known chetyrehballnoe forging device consisting of two brackets of the upper and lower forging dies with inclined surfaces, kinematically connected with them two brackets side Boykov with inclined surfaces corresponding to the surfaces of the holders of the upper and lower heads, and four strikers attached to the respective holders Boykov [1].

The disadvantage of this chetyrehvalkovoj forging device is that its design does not provide a long life of the device.

It is also known chetyrehballnoe forging device consisting of two brackets of the upper and neither is it known with inclined planes, kinematically associated two brackets side Boykov with inclined surfaces corresponding to the inclined planes of the upper and lower holders Boykov, installed on inclined planes antifriction plates forming a pair of slip, four strikers with work surfaces attached to the respective holders of Boykov and system for supplying lubricant to the pairs of slip [2].

A disadvantage of the known chetyrehvalkovoj forging device is that its design does not provide long life anti-friction plates and the heads due to overheating in the forging process.

The basis of the invention the task by changing the design chetyrehvalkovoj forging device to ensure a longer life anti-friction plates and Boykov by removal of excess heat from these parts.

This object is achieved in that in chetyrehsetovom forging device consisting of two brackets of the upper and lower forging dies with inclined planes, kinematically connected with them two brackets side Boykov with inclined surfaces corresponding to the inclined planes of the upper and lower holders Boykov, installed on inclined planes sliding plates, and four heads with the working surface is, however, attached to the holders Boykov, what's new is that the forging unit is equipped with a cooling system Boykov and holders Boykov, including water supply, the collector supply and drain water piping, flexible hoses, with holders of strikers and strikers made channels, and pipes coming out of the collector water supply, is connected with the channels in the holders of strikers and strikers, which on the other hand piped to a manifold drain water, with channels in the holders of the heads are located under the seats mounting anti-friction plates and the channels in the strikers under their working surfaces.

The task is achieved by the fact that the pipelines connecting channels in strikers, connected between themselves, forming channels in the strikers closed paths, with each of these pipes has a valve, and each closed loop in one of the pipelines connected to the channel in the striker, relief valve.

Patented chetyrehballnoe forging device illustrated by diagrams (Fig.1-3). Figure 1 presents chetyrehballnoe a forging device in a static state; figure 2 - chetyrehballnoe a forging device with a cooling system that can disable the cooling Boykov; figure 3 - chetyrehballnoe a forging device in% the SSE (shown shaded cross-section of the workpiece).

Chetyrehballnoe forging device consists of a holder top striker 1, the holder bottom striker 2, the brackets of the side of the heads 3, 4, Boykov 5-8, guides 9-12, anti-friction plates 13-16, installed in the upper and lower holders Boykov, anti-friction plates 17-20 installed in the holders side of the heads, manifold water supply 21, the reservoir water drain 22, pipelines 23-32, channels 33 to 37, the holders of strikers and strikers, flexible hoses 38, 39, valves 40-46, safety valves 47, 48 (Fig 1, 2).

With the reservoir in the water supply line 21 is connected by pipeline to feed him in the shop tap water. Immediately before the collector 21 is mounted water supply 40 (figure 2). The collector 21 is connected through pipes 23, 25-31, and a flexible hose 39 with channels 33-36, made in the side holders of the heads 3, 4, the upper and lower holders of the heads 1, 2, and strikers 5-8 (1, 2). The channels 33, 35, 37 are in the immediate vicinity of the mounting position anti-friction plates 13-16. The channels 33, 35, 37 in the holders of the heads are connected by pipelines 25-27 and 28-30, which, together with the channels 34, 36 form a closed loop. Pipelines 25-30 together with gates 41-46 supply of water in the channels 34, 36, made in the strikers, as well as disabling these channels from cooling (figure 2).

Work chetyrehvalkovoj forging device is sudestada as follows.

After installation of the forging device in the workspace, press and fasten it on the table press connect the cooling device to a shop plumbing system, and a flexible hose coming from the manifold drain water, put in the drain funnel.

Just before forging open the valve 40 to supply water to the cooling system of the device. From the collector supply of water 21 water through pipelines 23, 31 and flexible hoses 39 enters the channels 33, 35 are parallel friction plates 13-16 and 17-20 (figure 2). After passing through the channels 33, 35, the water takes some of the heat, which was formed as a result of friction anti-friction plates during operation of the device and the heat from his heated to a high temperature of workpiece (2, 3). Before forging valves 43 and 45 is closed, and the valves 44, 46 and 41, 42 open. The water enters the pipe 25 passes through open valve 42, the channel 34, the pipe 27 to open valve 41, and then through the channel in the holder top striker, a flexible hose 38, the pipe 24 and into the reservoir water drain 22. Passing through the channel 34, the water cools the upper die 6, and then cools the upper holder 1 striker mounting in the area of anti-friction plates 13-16 (1, 2). From the collector drain water 22 water is supplied through a flexible hose into the drain funnel (figures not shown), and C is the - in the Guild system water regeneration (figure 2). Similarly cooled the lower die 8 and the lower holder striker 2 mounting in the area of anti-friction plates 13-16 (1, 2).

When cooled side striker 5 close the valve 45 and opening valves 44 and 46. In this case, the water passing through the channel 35 and the pipe 28, enters the channel 36 located beneath the work surface of the striker, which is heated in the hot forging process of the workpiece (1, 2). From canal water, partially has deprived the heat of the firing pin 5, passes through the conduit 30, the channel 37 in the holder side striker 3, through the pipe 32 enters the reservoir water drain 22, and then into the drain funnel (figure 1, 2). Thus, cooled simultaneously working surface striker holder Boykov and anti-friction plate. Similarly cooled second side die 7, the holder side striker 4 and anti-friction plates 17-20 (figure 1).

There are a number of steels and alloys, such as heat-resistant, titanium and other plastic processing which can be performed only in a narrow temperature interval. In this regard, forced cooling of the working surfaces of the heads is unacceptable as cooled jaunty will quickly reduce the temperature of the workpiece and pracovat it will be impossible.

In the patented design of the forging device provided by the shutoff of ohlord is the fact that water in the channels, made in the strikers. In order to block the channel 36 in the side firing 5, close the valves 44 and 46 and open valve 45 (Fig 1, 2). The cooling water passes through the channels 35, 37, cooling holder side striker 3 places mounting anti-friction plates. Thus, given the heat from the friction plates and eliminates the possibility of failure due to overheating. Remaining in the channel side striker 5 water is heated to a vapor state, and the steam enters the atmosphere through the pressure relief valve 47 (Fig 1, 2). Similarly act and with other strikers, shut off the valves on the pipelines connecting the channels in the strikers, and opening the valves in the pipelines connecting the channels to the holders of strikers. The remaining channels of the heads of the water is converted to steam and through the pressure relief valve vents to atmosphere, which prevents the destruction of pipelines and father.

The proposed construction chetyrehvalkovoj forging device reduces the possibility of failure of the anti-friction plates because of overheating in the forging process, and also provides improved resistance Boykov 3-5 times when forging carbon and low-alloyed constructional and tool steels in chetyrehsetovom forging device for hydraulic forging press.

SOURCES of INFORMATION the

1. The patent of Russian Federation №2242322, IPC B 21 J 13/02, 7/16, publ. in bull. Fig. No. 35, 20.12.2004,

2. Patent of Ukraine # 69879, IPC B 21 J 13/02 dated 15.04.2004,

1. Chetyrehballnoe forging device containing two holders top and bottom heads with inclined planes, kinematically associated with two holder side Boykov with inclined surfaces corresponding to the inclined planes of the upper and lower holders of the heads mounted on the inclined planes of the holders of the antifriction plate and four striker working surfaces attached to the holders Boykov, characterized in that it is provided with a cooling system Boykov and holders Boykov, including water supply, the collector supply and drain water piping, flexible hoses, with holders of strikers and strikers made channels, and pipes coming out manifold water supply, is connected with the channels in the holders of strikers and strikers, which on the other hand piped to a manifold drain water, with channels in the holders of the heads are located under the seats mounting anti-friction plates and the channels in the strikers under their working surfaces.

2. The device according to claim 1, characterized in that the piping connected to channels in the strikers, are connected with the formation of channels in the strikers closed Contura is, each of these pipes has a valve, and each closed loop in one of the pipelines connected to the channel in the striker, relief valve.



 

Same patents:

FIELD: metal working, possibly manufacture of flanged articles and articles without flanges of different alloys.

SUBSTANCE: method comprises steps of heating blank and deforming it in die set; sustaining relation of blank temperature to that of die set in range 0.7 - 7.4. Blank is heated in predetermined temperature range depending upon blank material. Said temperature range may be found from ductility diagram and(or) yield curves and(or) from blank material recrystallization diagrams.

EFFECT: enhanced factor of using metal, improved quality of articles, lowered labor consumption of forging and subsequent working of blank.

6 cl, 2 dwg, 2 ex

FIELD: plastic metal working, possibly by isothermal deforming.

SUBSTANCE: apparatus includes die unit, heating device and heat insulation unit. Heating device includes two sections arranged at both sides of die unit and bridge. Each section includes upper and lower electrically conducting plates electrically connected one to other through lamellae. Said sections are electrically connected in series; bridge is arranged outside heat insulation unit. Apparatus may have members for fixing electrically conducting plates. Several fixing members provide possibility for moving electrically conducting plates.

EFFECT: uniform heating of die set, lowered metal consumption for communications.

2 cl, 4 dwg

FIELD: plastic working of metals, possibly at isothermal deforming.

SUBSTANCE: apparatus includes die set unit, heating device and heat insulation unit. Die set unit includes upper and lower plates for supporting upper and power parts of die set respectively. Heating device includes sections formed by electric current conducting plates mutually connected through resistance members. Heat insulation unit includes stationary and detachable portions. Stationary portion includes sheet casings mounted in such a way that space between them is filled with heat insulation material. Sheet casings turned to resistance members are in the form of set of sheets placed with superimposing in slit grooves of insulators. The last are fixed to lower and (or) upper electric current conducting plates. Sheet casings may be bent to side opposite relative to resistance members.

EFFECT: improved design of apparatus.

2 cl, 2 dwg

The invention relates to the processing of metals by pressure and can be used for plastic deformation of the billet heating

The invention relates to the processing of metals by pressure and can be used to reduce the width of the laminated material, in particular the width of the slabs in the blooming mill for hot-rolled steel

FIELD: plastic working of metals, possibly designing of technological tools for waste-free and slope-free forging of blanks such as bodies of revolution.

SUBSTANCE: die set includes upper and lower portions. Upper portion has body, insert, punch and self-aligning yoke suspended to punch by means of tie rods. Lower portion includes body, insert and knocking out member. Insert of lower portion is built-up one. It has stationary insert with cone cavity, movable insert-yoke joined with stationary insert along outer surface and having inner cylindrical surface; and insert-bottom. Joined surfaces of stationary insert and movable insert-yoke are formed with joining angle exceeding self-braking angle. On inner surface of movable insert-yoke shoulder is formed for supporting insert-bottom. Diameter of lower base of cone cavity of stationary insert is less than diameter of lower base of outer surface of movable insert-yoke by value determined according to given condition.

EFFECT: enhanced efficiency of forging process, improved accuracy of forged blanks, enhanced repairing capability of die set due to possibility for changing worn members.

3 cl, 3 dwg

FIELD: plastic working of metals, namely manufacture of round cross section forged pieces from ingots and preliminarily deformed blanks in forging presses with four-striker forging devices.

SUBSTANCE: method comprises steps of hating ingot or blank and subjecting it to rough or sizing forging in four-striker forging device by the same strikers with concave curvilinear surfaces. When strikers are closed their concave surfaces form cylindrical cavity with relation of radius of concave curvilinear surface to circle radius inscribed into cavity formed by closed strikers in range 1.15 - 2.10. At rough forging process blank is subjected to single squeezing stages at deformation degree 18 - 70% while sustaining relation d1/d2 = 1.4 - 2.7 where d1 - mean diameter of ingot or blank; d2 - diameter of circle inscribed to cavity formed by closed strikers. At sizing forging process relation d3/d4 = 1.02 - 1.15 is sustained where d3 - diameter of blank after rough forging of it; d4 - diameter of sized forged piece.

EFFECT: reduced labor consumption of forging process, enhanced efficiency, less expenses for making tool.

3 cl, 4 dwg, 2 tbl

FIELD: plastic metal working, namely production of forged pieces of ingots in forging complexes.

SUBSTANCE: method comprises steps of billeting ingot and forging it in several passes. Billeting is performed in four-striker forging apparatus for billeting ingots. At each unit reduction ingot is reduced in vertical plane at higher deformation degree than in horizontal plane. Forging complex includes forging press with movable tool table having several positions for changing forging tools. Tool has at least two four-striker forging device. Each device has four strikers secured to holders of upper, lower and lateral strikers. In first position of table four-striker forging device for billeting ingots is arranged. Angle between inclined surfaces in each holder of lateral striker of said device is in range 95 - 160°. Working surfaces of upper and lower strikers are longer than working surfaces of lateral strikers. When all strikers are in closed position, rectangle is formed in their cross section.

EFFECT: possibility for forging ingots with large cross section at improved efficiency.

6 cl, 7 dwg, 2 tbl, 1 ex

FIELD: metal working by ultrasonic forging; manufacture of blades at enhanced technical and service characteristics.

SUBSTANCE: edge of plate is placed between taper surfaces of strikers located opposite each other for forming wedge-shaped blade and is subjected to deformation by ultrasonic forging. Plate is moved relative to longitudinal axes of strikers in transversal direction. Strikers connected with ultrasonic oscillation source are rotated about their longitudinal axes with the aid of drive. Taper working surface of each striker has recess whose generatrix corresponds to shape of surface of wedge-shaped blade.

EFFECT: improved quality of tool cutting edge; increased productivity; enhanced wear resistance of fittings.

19 cl, 9 dwg

FIELD: hot plastic working of metals, namely technological fittings for crank hot forging presses and steam-air hammers mounted in forging-forming shops.

SUBSTANCE: closed die set includes upper and lower halves and lower knocking out member. In lower half of die set there are compensators in the form of vertical slits having holes in their end portions and uniformly arranged around die set configuration. Knocking out member may be in the form of pushing core.

EFFECT: simplified design of die set, possibility for using low-waste forging processes realized in widely used standard equipment.

2 dwg

FIELD: plastic metal working, possibly in forging shops of metallurgical and machine engineering plants for making motor vehicle wheels and similar products.

SUBSTANCE: tool includes die, punch mounted in slide of press and shape part of knocking out member, both movable along die; annular pressure yoke and annular stop. Yoke has stepped cylindrical outer surface and through opening whose diameter corresponds to that of punch. Annular stop has through stepped opening. Upper step of die opening is cylindrical one and it has diameter corresponding to outer diameter of lower step of pressure yoke. Stepped opening of annular stop has lower step with diameter less than diameter of upper step of said opening and less than outer diameter of upper step of pressure yoke. Height of said step is less than depth of upper step of opening of annular stop.

EFFECT: enhanced geometry accuracy of semi-finished products of wheels.

2 dwg

FIELD: plastic working of metals, possibly in forging shops of metallurgical and machine engineering plants for making automobile wheels and similar products.

SUBSTANCE: tool includes die with through round stepped hole having upper large-diameter step; punch mounted on slide of press and shaped part of knocking out member, both mounted with possibility of motion along axis of die. Tool also includes unit for stepwise regulation of bottom thickness and height of cup. Said unit includes clamping round stepped yoke secured to slide and embracing upper part of punch and also upper and lower spacing rings. Upper spacing ring is arranged between upper end of large-diameter step of yoke and press slide, lower spacing ring is arranged under shaped part of knocking out member. Upper step of die hole is cylindrical one, its diameter corresponds to outer diameter of yoke step turned downwards. Shaped part of knocking out member, upper and lower spacing rings are changeable ones.

EFFECT: enlarged manufacturing possibilities of tool due to possibility for making semi-finished products of wheels of different types and dimensions.

2 cl, 1 dwg

FIELD: plastic working of metals, namely production of nano-crystalline materials with improved degree of mechanical properties.

SUBSTANCE: die set includes deforming unit with inlet and outlet ducts of the same rectangular cross section and ram. In first variant of invention deforming unit is in the form of two parts with crossing planes. Crossing planes of first part having grooves are connected with crossing planes of second part. Inlet and outlet ducts are restricted by said grooves and partially by crossing planes of second part. In second variant of invention deforming unit is in the form of two plates and two other parts. Thickness of each plate is equal to dimension of side of rectangular cross section of inlet and outlet ducts; each plate has two crossing planes. Said plates are mutually joined by means of two other parts according to condition of arrangement of two crossing planes of first plate opposite to two crossing planes of second plate. Inlet and outlet ducts are restricted by means of two crossing planes of first plate, two crossing planes of second plate and partially by planes of other parts.

EFFECT: enhanced operational reliability of die set, improved quality of formed product.

5 cl, 9 dwg, 1 ex

FIELD: plastic working of metals, possibly manufacture of parts with shaped contour, for example polyhedral parts.

SUBSTANCE: method comprises steps of forming round cross section semi-finished product; embossing its surface for forming relief in the form of alternating protrusions and recesses and shaping curvilinear contour of said relief. Size of shaped contour corresponds to size of profile of ready part. Diameter of described circle passing through apexes of curvilinear protrusions is selected in range consisting of (1.15 - 1.35) of diameter of inscribed circle passing through apexes of recesses of part. Curvilinear contour of protrusions and recesses is shaped due to acting upon semi-finished product by means of shaping tool having profile of working surface in the form of curvilinear protrusions. The last have curvature radius with curvature centers spaced from part symmetry center by distance exceeding by 1.65-1.8 times distance from said symmetry center till curvature centers of curvilinear protrusions of part. Curvilinear recesses are alternated with curvilinear protrusions on working surface of shaping tool. Diameter of described circle passing through apexes of said recesses consists (1.15 - 1.35) of diameter of inscribed circle passing through apexes of curvilinear protrusions.

EFFECT: enlarged manufacturing possibilities of method and apparatus.

8 cl, 8 dwg

FIELD: plastic metal working with use of plastic deformation, namely manufacture of nano-crystalline materials with improved mechanical properties.

SUBSTANCE: die set includes bandage to which cone insert having four parts is pressed -in; lower support; inlet and outlet ducts of the same rectangular cross section; and ram. Parts of cone insert are made in such a way that they are defined by two mutually crossing planes and by portion of cone surface cut off by said planes. Rib formed by means of two mutually crossing planes in each part of cone insert is cut off by such a way that assembled parts of insert define inlet duct with three portions. Two portions have rectilinear walls; one portion has helical walls. The last portion is arranged between said portions with rectilinear walls. Outlet duct is restricted by lower support and by two adjacent parts of cone insert having grooves in its lower end.

EFFECT: enhanced intensity of plastic deformation of metallic blank, simplified design and increased useful life period of die set.

7 dwg

FIELD: plastic working of metals, namely manufacture of round cross section forged pieces from ingots and preliminarily deformed blanks in forging presses with four-striker forging devices.

SUBSTANCE: method comprises steps of hating ingot or blank and subjecting it to rough or sizing forging in four-striker forging device by the same strikers with concave curvilinear surfaces. When strikers are closed their concave surfaces form cylindrical cavity with relation of radius of concave curvilinear surface to circle radius inscribed into cavity formed by closed strikers in range 1.15 - 2.10. At rough forging process blank is subjected to single squeezing stages at deformation degree 18 - 70% while sustaining relation d1/d2 = 1.4 - 2.7 where d1 - mean diameter of ingot or blank; d2 - diameter of circle inscribed to cavity formed by closed strikers. At sizing forging process relation d3/d4 = 1.02 - 1.15 is sustained where d3 - diameter of blank after rough forging of it; d4 - diameter of sized forged piece.

EFFECT: reduced labor consumption of forging process, enhanced efficiency, less expenses for making tool.

3 cl, 4 dwg, 2 tbl

FIELD: plastic working of metals, namely ingot forging in presses of four-striker forging systems.

SUBSTANCE: method comprises steps of squeezing ingot by means of four strikers for forming four dents on lateral surface of ingot; squeezing said dents, feeding and tilting blank, sizing forged piece. Said dents are squeezed for forming octahedral cross section blank having width values of faces formed at squeezing process no less than width values of non-squeezed faces. Blank is subjected to tilting after each pass alternatively by angle 45° and 135° in the same circumference direction. Before sizing, blank is tilted by angle multiple to angle 22.5°.

EFFECT: less loss of yield for forged pieces after their mechanical working.

4 dwg, 1 ex

FIELD: plastic metal working, namely production of forged pieces of ingots in forging complexes.

SUBSTANCE: method comprises steps of billeting ingot and forging it in several passes. Billeting is performed in four-striker forging apparatus for billeting ingots. At each unit reduction ingot is reduced in vertical plane at higher deformation degree than in horizontal plane. Forging complex includes forging press with movable tool table having several positions for changing forging tools. Tool has at least two four-striker forging device. Each device has four strikers secured to holders of upper, lower and lateral strikers. In first position of table four-striker forging device for billeting ingots is arranged. Angle between inclined surfaces in each holder of lateral striker of said device is in range 95 - 160°. Working surfaces of upper and lower strikers are longer than working surfaces of lateral strikers. When all strikers are in closed position, rectangle is formed in their cross section.

EFFECT: possibility for forging ingots with large cross section at improved efficiency.

6 cl, 7 dwg, 2 tbl, 1 ex

FIELD: plastic working of metals, possibly in forging press shops in machine engineering enterprises for making parts by sheet forming with use of ingots of own production.

SUBSTANCE: method comprises steps of plastically deforming ingot by forging in four-striker device in forging press at forging reduction ratio 1:2 -1:5 till producing forged piece with diameter d =(0.2 - 0.8)d1 where d, d1 -diameters of forged piece and blank for sheet forming at allowance for working respectively. The forged piece is cut normally to its lengthwise axis by blanks multiple to several blanks for sheet forming. Prepared blanks are heated till temperature of plastic deformation, upset till diameter d1, annealed and turned according to diameter of round blank for sheet forming, Then blanks are cut normally to their lengthwise axis by measured blanks for sheet forming.

EFFECT: improved factor of metal using, simplified process.

1 ex, 1 tbl

Ring making method // 2286862

FIELD: plastic metal working.

SUBSTANCE: invention can be used in metallurgy and aircraft industry at manufacture of important parts, mainly, parts of gas-turbine engines. According to proposed method, blank is subjected to cross upsetting to form plate. Then plate is installed in flat dies with provision of vertical direction of plate material fiber and is subjected to spinning to form disk. After spinning, blank is turned over, its end surfaces are leveled, blank is broached and rolled to final sizes.

EFFECT: improved physical and mechanical properties of article in direction of action of maximum loads in operation.

3 cl, 1 ex, 1 tbl

FIELD: plastic working of metals, in particular, production of forged pieces with elongated axes from ingots and preformed blanks.

SUBSTANCE: method involves forging preliminarily heated blank in several stages combined with squeezing in two mutually perpendicular planes in four-striker forging apparatus. Each of upper and lower strikers of four-striker forging apparatus has two working portions divided by cuts. Each of two lateral strikers has one working portion extending into cuts of upper and lower strikers. First stage includes forging process performed in several passes combined with squeezing in vertical plane, with squeezing force of said processes exceeding squeezing force applied in horizontal plane by 20-80%, tilting after each squeezing process and feeding. Feeding value is defined from cited ratio. Second stage includes forging process combined with squeezing processes of equal force in two mutually perpendicular planes until blank surface is leveled.

EFFECT: improved quality of metal of forged pieces.

2 cl, 1 tbl, 1 ex

Up!