CN101365553A - Forging/coining method - Google Patents

Forging/coining method Download PDF

Info

Publication number
CN101365553A
CN101365553A CNA2007800021010A CN200780002101A CN101365553A CN 101365553 A CN101365553 A CN 101365553A CN A2007800021010 A CNA2007800021010 A CN A2007800021010A CN 200780002101 A CN200780002101 A CN 200780002101A CN 101365553 A CN101365553 A CN 101365553A
Authority
CN
China
Prior art keywords
plug
pressure head
press
described part
mold cavity
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.)
Pending
Application number
CNA2007800021010A
Other languages
Chinese (zh)
Inventor
A·J·切萨
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.)
GKN Sinter Metals LLC
Original Assignee
GKN Sinter Metals LLC
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 GKN Sinter Metals LLC filed Critical GKN Sinter Metals LLC
Publication of CN101365553A publication Critical patent/CN101365553A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • B21K1/305—Making machine elements wheels; discs with gear-teeth helical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • B22F5/085—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs with helical contours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Abstract

Methods for coining or forging powdered metal parts are disclosed. One example method uses a press including a first rod, a first ram surrounding the first rod, a die plate having a die cavity, a second rod opposite the first rod, and a second ram surrounding the second rod wherein the first rod and the second rod are dimensioned to fit within the inside diameter of the part. In the method, the part is positioned within the die cavity, one of the first rod and the second rod is located as a core rod within the inside diameter of the part, and at least one of the first ram and the second ram is moved toward the other of the first ram and the second ram such that both the first ram and the second ram contact and coin or forge the wall of the part.

Description

Forging/coining method
Technical field
The present invention relates to be used for the method for punching press or forging and pressing metal powder parts, especially cylindrical component.
Background technology
Metal dust is processed to relate to and is changed the powdered-metal in the compacting process into given density sintered products.Compacting process utilizes press, and the various motions of press can be with powder distribution in the various piece of mould, and this moment, metal was compacted to such an extent that have a distribution of suitable uniform density in whole parts.The key of these motions is to distribute the material of appropriate amount in part.At present this punching course carries out in uncomplicated press, and the punching course sintered dimensions of need assaying is once more also wanted the compacting part in some cases.In order to change material flowing in these punching courses, need complicated instrument, in most of the cases this instrument is special-purpose parts.
In recent years, owing to introduced CNC (computer numerical control) hydraulic press, metal forming has had significant improvement.These press have very big adjustable range to improve the precision of formation of parts and make the scope of complex geometry shape bigger.Manufacturer no longer is limited to the limitation of most of mechanical press.U.S. Patent No. 5,435,216,4,721,028 and 4,116,122 have introduced the example of CNC press.Yet, be used for punching press (coining) and forging and pressing two generation press paces fail to catch up with the older generation's press that has been applicable to powdered metal process.Just become very important so need the press of CNC forging/coining.
Therefore, also need the method for improved punching press and forging and pressing metal powder parts.
Summary of the invention
The invention provides a kind of method, wherein, use CNC forging/coining press to come integrated all procedure of processings.Part can carry out cold working and improve global density, the interior or outline of polishing simultaneously.In press so, can obtain pressurization simultaneously from push-down head and seaming chuck.Another feature is to change compression rate.On the same part, little detail section is compared with big detail section and need slower speed be reached desired density.These two kinds of detail sections can make two-part final density reach uniform density simultaneously by programming now.Also have in forging and pressing, if become closely knit fully in a certain zone, the center of part section, then owing to the direction from up to down of forging and pressing process, this center dense region bottom following and part will not have material to move.The speed of balanced press can reduce this limitation.
One of feature of new method is the requirement to the balanced press motion of powdered metal process.Almost in all scenario of pressurized operation, material all needs to redistribute.Later operation, i.e. forging/coining, need with required identical motion in the compacting operation.Difference is, needs tool using partly to come to assist other parts such as ejecting the such instrument of core.For guaranteeing that instrument does not damage, the timing of closed-circuit system is very important.
As mentioned above, be used to forge and press method with punching press at present and comprise that quite simple, uncomplicated machine produces metal powder parts.The present invention is the press with programmable features, and it allows press to implement that various motions are forged and pressed and/or the metal powder parts of coin complex.There has been the press of advanced function to make manufacturer possess the ability that makes up the various technical processes of in individual machine, carrying out at present, for example, polishing process.Press also allows the user to programme to change the compression rate of bead part, to keep uniform material to flow when cold or this part of hot-working.Have the product of spiral characteristic for processing, advanced function also can reduce the complexity of the required instrument of the rotational motion of adding programming.
In forge hot pressure process, the present invention allows user's various motions of programming to shorten time that tool component contacts with hot part to prolong the life-span of core rod tool.The also combinable use of tool component is with the ejection of the drip molding that helps to have big ejection power, for example, and big plug.The stress that this can reduce on the bolt that is used for fixing tool component like this at present further prolongs life tools.
One of advantage of the present invention is the complexity that sheds in the tool construction, and as feature they is added in the machine.The instrument complexity added to have three significant advantages in the press: (1) just can change tool operation by the adjustment program, and do not need expensive instrument to revise, (2) for given set of tools, can revise material in many ways flows, and (3) are not owing to need the high private adapter of cost, so the instrument totle drilling cost is lower.When developing new product, these factors reduce development time and relevant cost.
Therefore, the invention provides and a kind ofly be used for punching press or forging and pressing have the method for the part of the wall that has interior diameter.In one form, this part is a metal powder parts.This method is used a kind of press, it comprises the first leg, surrounds first pressure head of the first leg, has the Die and mould plate of mold cavity, the second leg relative with the first leg, and second pressure head that surrounds the second leg, wherein, the size of the first leg and the second leg is suitable for being fitted in the interior diameter of part.In the method, part is positioned in the mold cavity, make one of the first leg and second leg be positioned at the interior diameter of part as plug, at least one pressure head in first pressure head and second pressure head is shifted in first pressure head and second pressure head another, punching press or forging and pressing part wall so that first pressure head all contacts with second pressure head.Promote as one of the first leg of plug and second leg with in the first leg and the second leg another, then, just in the interior diameter of part, eject as one of the first leg of plug and second leg.
In a certain pattern of this method, the first leg is excellent down, and the second leg is to go up rod; First pressure head is a push-down head, and second pressure head is a seaming chuck.The size of first pressure head and second pressure head is suitable for being fitted in the mold cavity, and first pressure head and second pressure head move towards each other, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.
In the another kind of pattern of this method, the first leg is excellent down, and the second leg is to go up rod; First pressure head is static push-down head, and second pressure head is a seaming chuck.The size of first pressure head and second pressure head is suitable for being fitted in the mold cavity, and second pressure head moves towards first pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.
In the another kind of pattern of also having of this method, part has outward extending bead on part one end.In the method for this pattern, the first leg is excellent down, and the second leg is to go up rod; First pressure head is static push-down head, and second pressure head is a seaming chuck, and this seaming chuck has the overall diameter that is substantially equal to the bead overall diameter.The size of first pressure head and second pressure head is suitable for being fitted in the mold cavity, and second pressure head moves towards first pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.
In the another kind of pattern of also having of this method, part is the gear with inside surface with helical teeth.In the method for this pattern, the first leg is a plug, and the first leg is rotating, and the first leg has the outer surface of band helical rib, the size of rib slidably with the helical teeth complementation of gear.In the method for this pattern, the first leg is swung in gear, from gear, eject the first leg then, so that the helical teeth of burnishing gear rotationally.
In the another kind of pattern of also having of this method, part is the gear with inside surface with helical teeth.In the method for this pattern, the first leg is a plug, and the first leg is rotating, and the first leg has the outer surface of band helical rib, the size of rib slidably with the helical teeth complementation of gear.The second leg is the rotating rod of going up, and the second leg has the outer surface of band helical rib, the size of rib slidably with the helical teeth complementation of gear.In the method for this pattern, the first leg is swung in gear, from gear, eject the first leg with the second leg then, so that the helical teeth of burnishing gear rotationally.
In the another kind of pattern of also having of this method, the size of first pressure head and second pressure head is suitable for being fitted in the mold cavity, and this method also is included in first pressure head and the second pressure head punching press or forging and pressing part wall and swings first pressure head and second pressure head when helping material movement and the polishing of part outer surface is provided.Preferably, this swing is a high frequency.
In the another kind of pattern of also having of this method, part is the gear with inside surface with helical teeth, and the first leg is a plug, and the first leg is the rotating rod of going up, and the first leg has the outer surface of band helical rib, the size of rib slidably with the helical teeth complementation of gear.In the method for this pattern, move the first leg, first pressure head and Die and mould plate towards second pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.Gear can comprise second inner surface, the diameter that this second inner surface has is less than the diameter of the inner surface that has the gear helical teeth, therefore, the size of the second leg is suitable for being fitted in slidably in second inner surface of gear, so that second inner surface of burnishing gear rotationally.
In the another kind of pattern of also having of this method, part is the gear with inside surface with helical teeth, and the second leg is a plug, and the second leg is rotating down rod, and the second leg has the outer surface of band helical rib, the size of rib slidably with the helical teeth complementation of gear.The method of this pattern comprises the steps: to move the first leg, first pressure head and Die and mould plate towards second pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.
In the another kind of pattern of also having of this method, this method provides the location of part in mold cavity.In the method for this pattern, the first leg is to go up rod, and the second leg is excellent down, and first pressure head is a seaming chuck, and second pressure head is a push-down head.The method of this pattern comprises the steps: to make the lower end of the first leg to extend beyond the lower end of first pressure head, the lower end of the first leg is positioned in the part interior diameter, by means of the first leg part is positioned in the mold cavity, to be positioned in the part interior diameter as the second leg of plug, and move first pressure head and Die and mould plate towards second pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.Part can be the gear with inside surface with helical teeth, and the second leg can be rotating rod down, and the second leg has the outer surface of band helical rib, and the size of rib is complementary so that polish helical teeth rotationally with the helical teeth of gear slidably.Also have, the first leg can have an overall diameter, its less than the overall diameter of the second leg to avoid contacting of the first leg and helical teeth.
In the another kind of pattern of also having of this method, the first leg is to go up rod, and the second leg is excellent down; The overall diameter that the second leg has is greater than the overall diameter of the first leg, and first pressure head is a seaming chuck, and second pressure head is a push-down head.The method of this pattern comprises the steps: the second leg as plug is positioned in the part interior diameter, moves the first leg, first pressure head and Die and mould plate towards second pressure head, so that first pressure head all contacts with second pressure head and punching press or forging and pressing part wall.Part can be the gear with inside surface with helical teeth, and therefore, the second leg can be the rotating rod with outer surface of band helical rib, and the size of described rib is complementary so that polish helical teeth rotationally with the helical teeth of gear slidably.This pattern method also can comprise and moves down Die and mould plate and eject the step that is stamped or forges and presses part.
In the another kind of pattern of also having of this method, this method comprises the steps: to be provided for changing the device of compression rate to press, and the compression rate that this device changes first pressure head and second pressure head is to keep uniform material to flow when cold or the hot-working part.The device that is used to change compression rate can comprise the processor of communicating by letter with hydraulic system, to control moving up and down of first pressure head and second pressure head.
In the another kind of pattern of also having of this method, this method comprises the steps: to provide a kind of device to press, and this device is used to change the speed that the first leg and the second leg move up and down, to keep uniform material to flow when cold or the hot-working part.Be used to change the move up and down device of speed and can comprise the processor of communicating by letter, with moving up and down of the control first leg and the second leg with hydraulic system.
On the other hand, the invention provides a kind of method that is used for punching press or forging and pressing part.In one embodiment, this part is a metal powder parts.This method is used press, and this press comprises plug, the pressure head that surrounds plug and the Die and mould plate with mold cavity, and wherein, the size of plug is suitable for being fitted in the part interior diameter.This part is positioned in the mold cavity, makes plug be positioned at the part interior diameter.Mobile pressure head so that pressure head contact and punching press or forging and pressing part make plug axially swing in part, then, is removed plug and the polish parts interior diameter from part.
In a certain pattern of this method, part is the gear with inside surface with helical teeth, and plug is rotatable, and plug has the outer surface of band helical rib, the size of described rib slidably with the helical teeth complementation of gear so that polish parts.In another pattern of this method, press comprises second plug, rotatable and the outer surface of this second plug with band helical rib, the size of described rib slidably with the helical teeth complementation of gear.Second plug is positioned at the part interior diameter, and axially swing in part, then, removes second plug and the polish parts interior diameter from part.The overall diameter that the second leg has can be less than the overall diameter of plug.This press can comprise second pressure head, punching press or forging and pressing part so that the pressure head and second pressure head can move towards each other.
In the another kind of pattern of also having of this method, the lower end of plug extends beyond the lower end of pressure head, and is positioned at the part interior diameter.Part is any to be positioned in the mold cavity by means of the first leg.In the another kind of pattern of also having of this method, press comprises second plug, and part comprises second inner surface, and the diameter that this inner surface has is less than the diameter of part inner surface, and the size of this second plug is suitable for being fitted in slidably in part second inner surface.
Also having on the other hand, the invention provides a kind of method that is used for punching press or forging and pressing part.In one embodiment, this part is a metal powder parts.This method is used press, and this press comprises pressure head and has the Die and mould plate of mold cavity.In the method, this part is positioned in the mold cavity, pressure head is moved so that pressure head contact part makes the pressure head swing and punching press or forging and pressing part when pressure head contact part.
In a certain pattern of this method, press has second pressure head.This second pressure head is moved so that second pressure head contact part makes the second pressure head swing and punching press or forging and pressing part when second pressure head contact part.In a kind of pattern, the size of the pressure head and second pressure head is suitable for being fitted in the mold cavity.In another kind of pattern, part has outward extending bead on part one end, and the overall diameter that second pressure head has is substantially equal to the overall diameter of bead, and second pressure head is moved towards pressure head, so that pressure head all contacts with second pressure head and punching press or forging and pressing part.In the another kind of pattern of this method, press has plug, and its size is suitable for being fitted in the part interior diameter, and this plug was positioned at the part interior diameter before punching press.
Also having on the other hand, the invention provides a kind of method that is used for punching press or forging and pressing part.In one embodiment, this part is a metal powder parts.This method is used press, and this press comprises pressure head, has the Die and mould plate of mold cavity, and the device that is used to change the pressure head compression rate.This part is positioned in the mold cavity, pressure head is moved, so that pressure head contact part.After pressure head contact part, the pressure head compression rate is changed and punching press or forging and pressing part.The device that is used to change compression rate can be the processor of communicating by letter with hydraulic system, is used for controlling moving up and down of pressure head.
Press can comprise that size is suitable for being fitted in the plug in the part interior diameter, and is used to change the move up and down device of speed of plug.Before or after in part is positioned at mold cavity, make plug be positioned at the part interior diameter, the speed that moves up and down of plug changes in the part interior diameter.Being used to change the move up and down device of speed can be the processor of communicating by letter with hydraulic system, is used for controlling moving up and down of plug.
In a certain pattern of this method, press has second plug relative with plug, and has second pressure head that surrounds second plug, and wherein, plug surrounds pressure head, and the size of the plug and the second leg is suitable for being fitted in the part interior diameter.Make the plug and second plug be positioned at the part interior diameter, the pressure head and second pressure head are moved towards each other, so that pressure head all contacts with second pressure head and punching press or forging and pressing part wall.The size of the pressure head and second pressure head can be suitable for being fitted in the mold cavity.The plug and second plug also can be rotating.
Consider the following detailed description, accompanying drawing and attached claims, will be better understood above-mentioned and other feature, aspect and the advantage of the present invention.
Description of drawings
Fig. 1 a to 1j be carry out be used for according to the present invention punching press or forging and pressing part method first example embodiment the elevational cross-section figure of press of series of steps, on the vertical plane of the axis that this sectional view is positioned at the following rod, the push-down head that contain press, go up rod and seaming chuck.
Fig. 2 a to 2i be carry out be used for according to the present invention punching press or forging and pressing part method second example embodiment the elevational cross-section figure of press of series of steps, on the vertical plane of the axis that this sectional view is positioned at the following rod, the push-down head that contain press, go up rod and seaming chuck.
Fig. 3 a to 3f be carry out be used for according to the present invention punching press or forging and pressing part method the 3rd example embodiment the elevational cross-section figure of press of series of steps, on the vertical plane of the axis that this sectional view is positioned at the following rod, the push-down head that contain press, go up rod and seaming chuck.
Fig. 4 a to 4f be carry out be used for according to the present invention punching press or forging and pressing part method the 4th example embodiment the elevational cross-section figure of press of series of steps, on the vertical plane of the axis that this sectional view is positioned at the following rod, the push-down head that contain press, go up rod and seaming chuck.
Fig. 5 illustrates the helical gear that uses the forging and pressing of method shown in Fig. 3 a to 3f.
Fig. 6 illustrates the helical gear that uses the forging and pressing of method shown in Fig. 4 a to 4f.
Fig. 7 a to 7f be carry out be used for according to the present invention punching press or forging and pressing part method the 5th example embodiment the elevational cross-section figure of press of series of steps, on the vertical plane of the axis that this sectional view is positioned at the following rod, the push-down head that contain press, go up rod and seaming chuck.
In following description to accompanying drawing, identical Reference numeral will be used for representing the identical parts among the different figure.
The specific embodiment
At first with reference to Fig. 1 a to 1j, contain rod under the press, push-down head shown in the figure, go up the front cross-sectional view on the vertical plane of rod and seaming chuck axis, described press is carried out the series of steps according to first example embodiment of the method that is used for punching press or forging and pressing part of the present invention.Press 10 comprises plug 20, seaming chuck 30, Die and mould plate 40, following plug 50 and push-down head 60, and they have common axis A.
Last plug 20 can be installed on the piston (not shown) of cylinder (not shown) with rotating.Piston and cylinder are the parts that is used to control the last core rod hydraulic system that plug 20 moves up and down.Last core rod hydraulic system is by the processor control of communicating by letter with last core rod hydraulic system.This processor is that microprocessor, computer, microcomputer maybe can be handled input and output to control other circuit of core rod hydraulic system according to the program of programming.Be used for the visible U.S. Patent No. 4,721,028 of control system of the demonstration of hydraulic cylinder, this paper quotes this patent and draws patent for your guidance together with other.
Seaming chuck 30 is installed on the piston (not shown) of cylinder (not shown).Piston and cylinder are the parts that is used to control the upper ram hydraulic system that seaming chuck 30 moves up and down.Upper ram hydraulic system is also controlled by processor.
Die and mould plate 40 is installed on the piston (not shown) of cylinder (not shown).Piston and cylinder are the parts that is used to control the die plate hydraulic system that Die and mould plate 40 moves up and down.Die plate hydraulic system is also controlled by processor.Die and mould plate 40 has columniform mold cavity 42.
Following plug 50 is installed on the bolster 52 and turns.Bolster 52 is installed in down in the rod supporting 54, and rod supporting 54 is installed on the piston (not shown) of cylinder (not shown) down.Piston and cylinder are the parts that is used to control down the following core rod hydraulic system that plug 50 moves up and down.Following core rod hydraulic system is controlled by processor.
Push-down head 60 is installed in the supporting 62, is installed on the piston (art illustrates) of cylinder (not shown) and support 62.Piston and cylinder are the parts that is used to control the lower ram hydraulic system that push-down head 60 moves up and down.Lower ram hydraulic system is also controlled by processor.
Therefore, the seaming chuck 30 of press 10, Die and mould plate 40, following plug 50 and moving up and down of push-down head 60 can be operated according to the program of programming in the processor.In this, but the CNC hydraulic press the method according to this invention of selling on the market is revised laggard line operate suitably.The control input that the user initiates can offer processor to set the operating parameter of hydraulic press.For example, processor can allow the user to select each hydraulic cylinder travel speed, the reverse position of stroke up and down, or stroke is with reverse tonnage.According to the needed specific feature of press, the input of other control of user also can offer processor.For example, processor can be controlled the rotational motion of plug 20 and following plug 50.
Still with reference to Fig. 1 a to 1j, the series of steps that first example embodiment that is used for the method for punching press or forging and pressing part according to the present invention is carried out shown in the figure.In Fig. 1 a, hollow cylindrical part 70 is loaded in the mold cavity 42, and plug 50 inserts in the hollow inside of part 70 down.Then, seaming chuck 30 moves in the mold cavity 42, closed mould plate 40 shown in Fig. 1 b.Last plug 20 contacts then with following plug 50, shown in Fig. 1 b and 1c.In Fig. 1 d to 1h, seaming chuck 30 and push-down head 60 mobile phase equivalent in opposite direction and go up that plug 20 and following plug 50 move down with fast speed and the inner surface 74 that begins the wall 72 of polish parts 70 with compacting part 70.Seaming chuck 30 and push-down head 60 keep mobile phase equivalent to come compacting part 70.
When compacting process took place, last plug 20 and following plug 50 were done motion up and down in this process, reached the size of its processing up to part 70.This kind of last plug 20 and following plug 50 moves up and down and is used for the inner surface of compacting and polish parts 70.When part 70 is that the outer surface of last plug 20 can have spiral rib when having the gear of helical teeth on the gear inner surface, the size of rib is suitable for slidably the helical teeth complementation with gear.Also have, the outer surface of following plug 50 can have spiral rib, and the size of rib is suitable for slidably the helical teeth complementation with gear.Because it is rotatable that last plug 20 and following plug 50 are mounted to, so last plug 20 turns with following plug 50 and be used for the helical teeth of burnishing gear in the process of moving up and down.Seaming chuck 30 and push-down head 60 also have the up and down ability of high frequency motion compacting simultaneously part 70, to help material movement and the polishing of part 70 outer surfaces is provided in the forging and pressing process.
In Fig. 1 i, move on to its home position on last plug 20 and the seaming chuck 30, and Die and mould plate 40 moves down and expose the part 70 that processes.After the part 70 that processes took out, press 10 was positioned at the loading position shown in Fig. 1 j, so another part 70 can be loaded in the mold cavity 42 and handle to do processing.
Now forward Fig. 2 a to 2i to, the front cross-sectional view of press shown in the figure 10, described press is carried out the series of steps of second example embodiment of the method that is used for punching press or forging and pressing part according to the present invention.In Fig. 2 a, cylindrical component 70 is placed near the mold cavity 42.Watch Fig. 2 b, last plug 20a moves down and makes cylindrical component 70 be aligned in mold cavity 42.As seen from the figure, the diameter that has of last plug 20a is less than the diameter of plug 50 and the interior diameter of part 70 down.Next, shown in Fig. 2 c, move on the last plug 20a and seaming chuck 30 moves down and catch part 70.Then, shown in Fig. 2 d, last plug 20a and seaming chuck 30 move down and part 70 are placed in the mold cavity 42.
Forward Fig. 2 e to, following plug 50 inserts in the part 70, moves down and go up plug 20a, seaming chuck 30, Die and mould plate 40 and push-down head 60.Do not have material to move and occur in the part 70.Then, shown in Fig. 2 f, last plug 20a, seaming chuck 30, Die and mould plate 40 and following plug 50 move down and forge and press part.In Fig. 2 g, last plug 20a and following plug 50 move down and eject down plug 50.Because the diameter that last plug 20a has is less than descending plug 50, so when ejecting plug 50, last plug 20a does not contact part 70.This helps the ejection of plug 50 down.Then, shown in Fig. 2 h, move on to top dead-centre on last plug 20a and the seaming chuck 30, Die and mould plate 40 moves down and ejects part 70.In Fig. 2 i, Die and mould plate 40, following plug 50 and push-down head 60 move on to its home position, like this, can begin the location and the loading of another part 70.Therefore, the method for Fig. 2 a to 2i provides the location of part in mold cavity.This method is particularly useful for finding out the position of circular pieces in mold cavity.
In Fig. 3 a to 3f, the front cross-sectional view of press shown in the figure, described press is carried out the series of steps according to the 3rd example embodiment of the method that is used for punching press or forging and pressing part of the present invention.Especially, the press sequence of Fig. 3 a to 3f can be used to forge and press helical gear 70a as shown in Figure 5.Watch Fig. 5, gear 70a comprises cylindrical wall 72a, and it has the inner surface 74a of band helical teeth 75a and the outer surface 76a of band helical teeth 77a.
Referring now to Fig. 3 a to 3f, in Fig. 3 a, press 10 is in loading position, and gear 70a is in mold cavity 42.In Fig. 3 b, following plug 50 inserts in the gear 70a, and last plug 20a, seaming chuck 30, Die and mould plate 40 and push-down head 60 move down, and gear 70a does not have generating material to move.In Fig. 3 c, last plug 20a, seaming chuck 30, Die and mould plate 40 and following plug 50 move down and forge and press gear 70a.Following plug 50 can have the outer surface of band helical rib, and the size of rib is suitable for slidably helical teeth 75a complementation with gear 70a so that the helical teeth 75a of burnishing gear 70a.Following plug 50 is mounted to rotatable so that following plug 50 turns in the process of moving up and down and the helical teeth 75a of burnishing gear 70a.In Fig. 3 d, last plug 20a and following plug 50 move down and eject down plug 50.Because the diameter of last plug 20a is less than following plug 50, thus under ejecting during plug 50 on plug 20a do not contact gear 70a.In Fig. 3 e, move on to top dead-centre on last plug 20a and the seaming chuck 30, Die and mould plate 40 moves down and ejects gear 70a.Then, shown in Fig. 3 f, Die and mould plate 40, following plug 50 and push-down head 60 move on to its home position so that begin the loading of other gear 70a.
In Fig. 4 a to 4f, the front cross-sectional view of press shown in the figure, described press is carried out the series of steps according to the 4th example embodiment of the method that is used for punching press or forging and pressing part of the present invention.Especially, the press sequence of Fig. 4 a to 4f can be used to forge and press helical gear 70b as shown in Figure 6.Watch Fig. 6, gear 70b comprises cylindrical wall 72b, and it has the inner surface 74b of band helical teeth 75b and the outer surface 76b of band helical teeth 77b.The lower end of gear 70b has towards interior bead 79 on inner surface 74b.Bead 79 forms the smooth inner surface that diameter reduces on the end of gear 70b.
Referring now to Fig. 4 a to 4f, in Fig. 4 a, press 10 is in loading position, and gear 70b is in mold cavity 42.In Fig. 4 b, last plug 20, seaming chuck 30 and following plug 50a move down and gear 70b are inserted in the mold cavity 42.Last plug 20 can have the outer surface of band helical rib, and the size of described rib is suitable for slidably helical teeth 75b complementation with gear 70b so that the helical teeth 75b of burnishing gear 70b.Last plug 20 is mounted to rotatable so that last plug 20 turns in the process of moving up and down and the helical teeth 75b of burnishing gear 70b.The diameter of following plug 50a is less than last plug 20, therefore, but the inner surface of the bead 79 on following plug 50a burnishing gear 70b one end.In Fig. 4 c, last plug 20, seaming chuck 30, Die and mould plate 40 and following plug 50a move down and forge and press gear 70b.In Fig. 4 d, move on the last plug 20 and eject down plug 50a.Perhaps, following plug 50a can eject plug 20.In Fig. 4 e, move on to top dead-centre on last plug 20 and the seaming chuck 30, Die and mould plate 40 and following plug 50a move down and eject gear 70b.In Fig. 4 f, Die and mould plate 40 and following plug 50a move on to its home position so that begin the loading of other gear 70b.
Fig. 7 a to 7d is the front cross-sectional view of press, and described press is carried out the series of steps according to the 5th example embodiment of the method that is used for punching press or forging and pressing part of the present invention.Especially, the press sequence of Fig. 7 a to 7f can be used to forge and press the part 70c that comprises cylindrical wall 72c, and this cylindrical wall has the outer surface 76c of band bead 81 outward.
Referring now to Fig. 7 a to 7d, in Fig. 7 a, press 10 is in loading position, and part 70c is in the mold cavity 42c of Die and mould plate 40c.Die and mould plate 40c has the ridge 44c that is positioned at Die and mould plate 40c top surface 46c below.In the time of in part 70c is carried in Die and mould plate 40c, part 70c bead 81 outward is shelved on this ridge 44c.In Fig. 7 b, following plug 50 is inserted in the part 70c, and last plug 20a, seaming chuck 30, Die and mould plate 40c and push-down head 60 move down, and part 70c does not have material to move.As seen from the figure, the diameter of last plug 20a is less than following plug 50.In Fig. 7 c, last plug 20a, seaming chuck 30, Die and mould plate 40c and following plug 50 move down and forge and press part 70c.The size of following plug 50 is suitable for slidably the inner surface complementation with part 70c, so that the inner surface of burnishing gear 70c.In Fig. 7 d, last plug 20a and following plug 50 move down and eject down plug 50.Last plug 20a and seaming chuck 30 then can on move on to top dead-centre, Die and mould plate 40c can move down and eject part 70c.Because the diameter of last plug 20a is less than descending plug 50, so when ejecting plug 50, last plug 20a does not contact part 70c.Then, Die and mould plate 40c, following plug 50 and push-down head 60 move on to its home position, shown in Fig. 7 a, can begin to load other part 70c.
Although the present invention is described with reference to some embodiment, those skilled in the art will recognize that the present invention can be realized that also they provide because of diagram and the reason that does not add restriction by other embodiment.For example, although the present invention in that punching press/or forging and pressing are effective especially during metal powder parts, the present invention is also applicable to the part of metal forging.Therefore, the scope of attached claims should not be limited to the description of the included embodiment of this paper.
Commercial Application
The present invention relates to the method for punching press or forging and pressing metal powder parts

Claims (23)

  1. One kind be used for punching press or forging and pressing part method, described method comprises:
    Press is provided, and described press comprises plug, the pressure head that surrounds described plug and the Die and mould plate with mold cavity, and wherein, the size of described plug is suitable for being fitted in the interior diameter of described part;
    Described part is positioned in the described mold cavity;
    Make described plug be positioned at the described interior diameter of described part;
    Move described pressure head, so that described pressure head contact and punching press or forge and press described part; And
    Before from described part, removing described plug, described plug is swung in described part.
  2. 2. the method for claim 1 is characterized in that,
    Described part is the gear with inside surface with helical teeth,
    Described plug is rotating, and
    Described plug has the outer surface of band helical rib, and the size of described rib is suitable for the described helical teeth of described gear complementary slidably.
  3. 3. method as claimed in claim 2 is characterized in that, also comprises:
    Second plug is provided for described press, described second plug is rotatable and have the outer surface of being with helical rib, and the size of described rib is suitable for the described helical teeth of described gear complementary slidably;
    Make described second plug be positioned at the described interior diameter of described part; And
    Before from described part, removing described second plug, described second plug is swung in described part.
  4. 4. the method for claim 1 is characterized in that, also comprises:
    Second pressure head is provided for described press; And
    Described pressure head and described second pressure head are moved towards each other, so that described pressure head all contacts with described second pressure head and punching press or forge and press described part.
  5. 5. the method for claim 1 is characterized in that, also comprises:
    Make the lower end of described plug extend beyond the lower end of described pressure head;
    Make the described lower end of described plug be positioned at the described interior diameter of described part; And
    By means of first plug described part is positioned in the described mold cavity.
  6. 6. the method for claim 1 is characterized in that, also comprises:
    Second plug is provided for described press;
    Make described second plug be positioned at the described interior diameter of described part;
    Before from described part, removing described second plug, described second plug is swung in described part.
  7. 7. the method for claim 1 is characterized in that, also comprises:
    Second plug is provided for described press, the overall diameter that this second plug has is less than the overall diameter of plug.
  8. 8. the method for claim 1 is characterized in that, also comprises:
    Second plug is provided for described press,
    Wherein, described part comprises second inner surface, and the diameter that described second inner surface has is less than the diameter of the inner surface of described part, and the size of described second plug is suitable for being fitted in slidably in described second inner surface of described part.
  9. 9. the method for claim 1 is characterized in that, described part is a metal powder parts.
  10. One kind be used for punching press or forging and pressing part method, described method comprises:
    Press is provided, and described press comprises pressure head and has the Die and mould plate of mold cavity;
    Described part is positioned in the described mold cavity;
    Move described pressure head, so that described pressure head contacts described part; And
    When contacting described part, swings described pressure head described pressure head, with punching press or forge and press described part.
  11. 11. method as claimed in claim 10 is characterized in that, also comprises:
    Second pressure head is provided for described press;
    Move described second pressure head, so that described second pressure head contacts described part; And
    When contacting described part, swings described second pressure head described second pressure head, with punching press or forge and press described part.
  12. 12. method as claimed in claim 11 is characterized in that, the size of described pressure head and described second pressure head is suitable for being fitted in the described mold cavity.
  13. 13. method as claimed in claim 10 is characterized in that, also comprises:
    Plug is provided for described press, the size of described plug is suitable for being fitted in the interior diameter of described part; And
    Make described plug be positioned at the described interior diameter of described part.
  14. 14. method as claimed in claim 10 is characterized in that, also comprises:
    Second pressure head is provided for described press,
    Wherein, described part has outward extending bead on described part one end, the overall diameter that described second pressure head has is substantially equal to the overall diameter of described bead, described second pressure head is moved, so that described pressure head all contacts with described second pressure head and punching press or forge and press described part towards described pressure head.
  15. 15. method as claimed in claim 10 is characterized in that, described part is a metal powder parts.
  16. 16. a method that is used for punching press or forging and pressing part, described method comprises:
    Press is provided, and described press comprises pressure head, has the Die and mould plate of mold cavity, and the device that is used to change described pressure head compression rate;
    Described part is positioned in the described mold cavity;
    Move described pressure head, so that described pressure head contacts described part; And
    After described pressure head contacts described part, change the compression rate of described pressure head, with punching press or forge and press described part.
  17. 17. method as claimed in claim 16 is characterized in that, the described device that is used to change compression rate comprises the processor of communicating by letter with hydraulic system, is used for controlling moving up and down of described pressure head.
  18. 18. method as claimed in claim 17 is characterized in that, also comprises:
    Plug is provided for described press, the size of described plug is suitable for being fitted in the described interior diameter of described part;
    Be provided for changing the move up and down device of speed of described plug for described press;
    Before or after being positioned at described part in the described mold cavity, make described plug be positioned at the described interior diameter of described part; And
    Change the speed that the described plug in the described interior diameter of described part moves up and down.
  19. 19. method as claimed in claim 18 is characterized in that, is used to change the move up and down described device of speed and comprises the described processor of communicating by letter with hydraulic system, is used for controlling moving up and down of described plug.
  20. 20. method as claimed in claim 19 is characterized in that, also comprises:
    Second plug and second pressure head are provided for described press, described second plug is relative with described plug, and described second pressure head surrounds described second plug, wherein, described plug surrounds described pressure head, and the size of described plug and described second plug is suitable for being fitted in the described interior diameter of described part;
    Make described plug and described second plug be positioned at the described interior diameter of described part;
    Described pressure head and described second pressure head are moved towards each other, so that described pressure head all contacts with described second pressure head and punching press or forge and press the wall of described part.
  21. 21. method as claimed in claim 20 is characterized in that, the size of described pressure head and described second pressure head is suitable for being fitted in the described mold cavity.
  22. 22. method as claimed in claim 20 is characterized in that, described plug and described second plug are rotating.
  23. 23. method as claimed in claim 16 is characterized in that, described part is a metal powder parts.
CNA2007800021010A 2006-01-10 2007-01-10 Forging/coining method Pending CN101365553A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/328,653 US20070157693A1 (en) 2006-01-10 2006-01-10 Forging/coining method
US11/328,653 2006-01-10

Publications (1)

Publication Number Publication Date
CN101365553A true CN101365553A (en) 2009-02-11

Family

ID=38123833

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007800021010A Pending CN101365553A (en) 2006-01-10 2007-01-10 Forging/coining method

Country Status (8)

Country Link
US (1) US20070157693A1 (en)
EP (1) EP1979116A2 (en)
JP (1) JP2009523070A (en)
KR (1) KR20080083121A (en)
CN (1) CN101365553A (en)
BR (1) BRPI0706301A2 (en)
CA (1) CA2635372A1 (en)
WO (1) WO2007081993A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885068A (en) * 2009-05-15 2010-11-17 通用汽车环球科技运作公司 Manufacturing has the system and method for the forging powder metal component of transverse features

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009052358A2 (en) * 2007-10-17 2009-04-23 Gkn Sinter Metals, Llc. Core rod forging for precise internal geometry
US10040121B2 (en) * 2009-12-09 2018-08-07 Porite Taiwan Co., Ltd. Method for forming an interconnect of a solid oxide fuel cell
DE102011111423B4 (en) 2011-08-23 2020-02-06 Volkswagen Aktiengesellschaft Method and device for producing a recess in a cast component
CN102527758B (en) * 2012-01-20 2014-12-03 东莞汉旭五金塑胶科技有限公司 Extrusion moulding die for aluminum base of radiator and manufacture method thereof
MX355139B (en) 2012-07-06 2018-04-06 Lapmaster Int Llc Stamping press.
AT514778B1 (en) * 2013-09-05 2016-02-15 Miba Sinter Austria Gmbh calibration
CN107052221B (en) * 2017-04-19 2018-07-27 嘉兴学院 A kind of hot upsetting device for automatically molding
FR3116743B1 (en) * 2020-11-30 2023-12-22 Forges De Courcelles Equipment and process for forging gear teeth on a semi-finished product.

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382045A (en) * 1942-06-19 1945-08-14 Hydraulic Dev Corp Inc Method of forging
US3292405A (en) * 1963-09-16 1966-12-20 Kent Owens Machine Co Apparatus for producing gear teeth or the like
US3585832A (en) * 1968-06-14 1971-06-22 Battelle Development Corp Metal working
BE759661A (en) * 1969-12-01 1971-04-30 Hitachi Powdered Metals Cy Ltd POWDER COMPRESSION DEVICE TO FORM A COMPRESSED HELICOIDAL GEAR
SE343220B (en) * 1971-03-08 1972-03-06 Polytype Ag
US3883278A (en) * 1971-07-19 1975-05-13 Southwire Co Anode press with vibration and compaction rate sensing means
US3842646A (en) * 1973-04-20 1974-10-22 Gleason Works Process and apparatus for densifying powder metal compact to form a gear having a hub portion,and preferred powder metal compact shape for use therewith
DE2645849A1 (en) * 1976-10-11 1978-04-13 Osterwalder Ag HYDRAULICALLY DRIVEN PRESS
BG28890A1 (en) * 1979-05-14 1980-12-12 Paunov Method for plastic material processing
JPS56204A (en) * 1979-06-18 1981-01-06 Yoshitsuka Seiki:Kk Molding of powder
JPS56152906A (en) * 1980-04-25 1981-11-26 Riken Corp Treatment of circular sintered body to reduce porosity
US4721028A (en) * 1983-03-31 1988-01-26 Cincinnati Incorporated Control system for hydraulic presses
US4510788A (en) * 1983-06-21 1985-04-16 Trw Inc. Method of forging a workpiece
JPS61242738A (en) * 1985-04-18 1986-10-29 Toyota Motor Corp Manufacture of bevel gear by oscillation forging
US4666665A (en) * 1986-01-30 1987-05-19 Federal-Mogul Corporation Hot-forging small inner diameter powdered metal parts
GB8603686D0 (en) * 1986-02-14 1986-03-19 Standring P M Rotary forging
JPH01150427A (en) * 1987-12-08 1989-06-13 Toyota Motor Corp Apparatus for producing helical ring gear
US5218853A (en) * 1992-04-16 1993-06-15 General Motors Corporation Single-cycle closed die metal forging method
JP3309344B2 (en) * 1993-05-26 2002-07-29 日鍛バルブ株式会社 Manufacturing method of gear with center hole
US5435216A (en) * 1993-07-28 1995-07-25 Strippit, Inc. Method and apparatus for operating a hydraulic ram
US5778749A (en) * 1995-06-05 1998-07-14 Dunn; David C. Flexible manufacturing press assembly
JPH0910883A (en) * 1995-06-30 1997-01-14 Hitachi Ltd Formation of gear
JP3263755B2 (en) * 1998-03-16 2002-03-11 株式会社クリアテック Helical gear forging device and forging method
US6044555A (en) * 1998-05-04 2000-04-04 Keystone Powered Metal Company Method for producing fully dense powdered metal helical gear
SE513170C2 (en) * 1998-11-19 2000-07-17 Hydropulsor Ab Material and device for defromation of a material body
US6151948A (en) * 1999-02-26 2000-11-28 Msp Industries Corporation Methods and apparatuses for producing complex-shaped metal parts by forging
JP4147704B2 (en) * 1999-10-21 2008-09-10 株式会社デンソー Manufacturing method of metal shell for spark plug
JP3408233B2 (en) * 2000-08-30 2003-05-19 Ｔｏｗａ株式会社 Press method, press mechanism, and resin molding device
US6592809B1 (en) * 2000-10-03 2003-07-15 Keystone Investment Corporation Method for forming powder metal gears
US6742253B2 (en) * 2001-06-29 2004-06-01 Gkn Sinter Metals Process for eliminating vertical flash on an as-forged connecting rod
US6630101B2 (en) * 2001-08-16 2003-10-07 Keystone Investment Corporation Method for producing powder metal gears
JP3931729B2 (en) * 2002-01-24 2007-06-20 日産自動車株式会社 Method of manufacturing cam piece for assembling camshaft
JP2003314554A (en) * 2002-04-23 2003-11-06 Hitachi Powdered Metals Co Ltd Composite sintered bearing and method for manufacturing the same
JP3950940B2 (en) * 2002-07-25 2007-08-01 株式会社椿本チエイン Bush manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885068A (en) * 2009-05-15 2010-11-17 通用汽车环球科技运作公司 Manufacturing has the system and method for the forging powder metal component of transverse features
CN101885068B (en) * 2009-05-15 2014-03-26 通用汽车环球科技运作公司 Systems and methods to produce forged powder metal parts with transverse features

Also Published As

Publication number Publication date
WO2007081993A3 (en) 2007-12-21
JP2009523070A (en) 2009-06-18
WO2007081993A2 (en) 2007-07-19
US20070157693A1 (en) 2007-07-12
EP1979116A2 (en) 2008-10-15
KR20080083121A (en) 2008-09-16
CA2635372A1 (en) 2007-07-19
BRPI0706301A2 (en) 2011-03-22

Similar Documents

Publication Publication Date Title
CN101365553A (en) Forging/coining method
EP2131995B1 (en) Powder metal forging and method of manufacture
Skoglund High density PM parts by high velocity compaction
JPH05195011A (en) Modular device for press-molding workpiece having profile of spiral shape
JP5548587B2 (en) Molding device for micro parts
JPH0119441B2 (en)
CN105268967B (en) Method and apparatus for pressing green bodies
JP2014500396A (en) Axial and radial holders for powder metal for molding applications
US20030041748A1 (en) Process and apparatus for compressing metallic powder into a compact
KR101264418B1 (en) Hotformed hubs and method
EP0238186B1 (en) Rotary forging of metal powder
EP0394388B1 (en) Method for the manufacture of rivet for a fixed spike or for a sleeve-mounted spike, respectively, and equipment for carrying out the method
US20070269334A1 (en) Multiple part compaction
JP5222614B2 (en) Powder press machine
JP2009062614A (en) Method of manufacturing crankshaft bushing
US3455138A (en) Methods and apparatus for removing burrs from sintered work pieces
KR101476887B1 (en) A method for powder injection molding and powder injection molded part
KR102000187B1 (en) Frictional mechanical sintering apparatus and mathod
KR100319470B1 (en) Manufacturing method of rod ring
KR100454882B1 (en) Manufacturing method of ball seat
WO1990014185A1 (en) Connecting rod
WO2009124380A1 (en) Device and method for pressing a metal powder compact
JPH09262697A (en) Powder compacting device
JP2002045998A (en) Press forming machine
CN105828986A (en) A method for manufacturing a cladded component

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Open date: 20090211