WO2017216089A1 - Dispositif de fermeture - Google Patents

Dispositif de fermeture Download PDF

Info

Publication number
WO2017216089A1
WO2017216089A1 PCT/EP2017/064253 EP2017064253W WO2017216089A1 WO 2017216089 A1 WO2017216089 A1 WO 2017216089A1 EP 2017064253 W EP2017064253 W EP 2017064253W WO 2017216089 A1 WO2017216089 A1 WO 2017216089A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
die part
locking device
piston
pressure medium
Prior art date
Application number
PCT/EP2017/064253
Other languages
German (de)
English (en)
Inventor
Mihai Vulcan
Original Assignee
Hatebur Umformmaschinen Ag
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 Hatebur Umformmaschinen Ag filed Critical Hatebur Umformmaschinen Ag
Publication of WO2017216089A1 publication Critical patent/WO2017216089A1/fr

Links

Classifications

    • 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
    • B21J5/025—Closed die forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J11/00—Forging hammers combined with forging presses; Forging machines with provision for hammering and pressing

Definitions

  • the invention relates to a closing device, preferably for transverse extrusion of a workpiece, according to the preamble of patent claim 1.
  • a closing device of the generic type is e.g. described in DE 199 22 660 B4.
  • This known closing device comprises a first movable press die and a second press die, wherein both press dies are movable relative to each other, and at least one movable relative to the press dies die consisting of two die halves.
  • the first die half is supported on a first support plate, and the second die half is resiliently supported on a movable second support plate which receives the second press die. Between the first die half and the first support plate is a for
  • Press ram axis coaxial first annular piston nitrogen gas pressure spring and between the second die half and the second support plate is arranged a coaxial to the ram axis second annular piston nitrogen gas pressure spring.
  • the two die halves are tensioned due to the effect of an external pressing force. After reduction or elimination of the external pressing force, the gas springs relax again.
  • Closing devices have the resilient support of the die halves
  • a closing device preferably for cross-extrusion of a workpiece, comprises a die having a first die part and a second die part, the first die part and the second die part closing the die along a movement axis relative to each other and opening the die along the axis of movement are relatively movable away from each other.
  • the second female part is in the direction of the movement axis against the supporting force of a resilient
  • Supporting arrangement arranged displaceably from an initial position to an end position.
  • the support arrangement for the second female part has a closed and completely with an elastically compressible liquid
  • the pressure medium supports the second female part.
  • the pressure medium is compressible by displacement of the second female part from its initial position to its end position, and on the other hand, the second female part is displaced back from its end position to its initial position by expansion of the pressure medium. That the first die part and the second die part for closing the die along a movement axis relative to each other and for opening the die along the movement axis are relatively movable away from each other, means that either the first die part or the second die part or both are movable along the movement axis ,
  • Locking device constructively relatively simple and requires a low
  • liquid pressure medium compared to gas is a generally much higher compression modulus, which allows the travel to be kept relatively small even at high pressures.
  • Another advantage over gas springs is that the liquid does not heat up significantly during compression and does not cool significantly during expansion.
  • the second female part is supported indirectly via at least one support member on the support piston.
  • the resilient support means of the support piston is structurally relatively simple.
  • the piston chamber is formed as an outer boundary wall and an inner boundary wall having annular chamber and is the
  • Support piston designed as an annular piston. This design allows the space enclosed by the inner boundary wall to be used for housing other device components.
  • the support piston against the outer and the inner boundary wall of the piston chamber is sealed by means of sealing elements.
  • the pressure medium is sealed in the liquid chamber.
  • Support piston are sealed by means of annular gap seals against the outer and the inner boundary wall of the piston chamber. As a result, the design effort is reduced.
  • the piston chamber has a communicating in
  • Connecting lines are completely filled with the pressure medium.
  • the resilient support effect can be optimally adjusted.
  • the pressure vessel has means for adjusting the volume of the pressure vessel.
  • the pressure vessel can be easily adapted to the respective requirements.
  • the closing device has a first along the
  • Motion axis movable plunger and the first female part is formed or attached to the first ram. This is structurally relatively easy to implement.
  • the closing device has a holding member which is adjustable relative to the first pressing ram along the movement axis for holding a holding member
  • the closing device has a second along the
  • Motion axis movable plunger and the second ram is slidably mounted in a space enclosed by the inner boundary wall of the piston chamber space relative to the second female part.
  • the second press die supports the forming process.
  • the second die part surrounds a portion of the second ram ring. This allows penetration of the section into the second die part and reshaping of the die located in the die
  • the closing device comprises a discharge member for
  • the pressure medium is water or hydraulic oil. water and
  • FIG. 10 an axial section analogous to FIG. 1 by a second
  • Fig. 11 - an axial section of a detail variant.
  • the closing device shown in Figures 1-9 comprises a stationary
  • Piston chamber block 30 includes an end plate 31 and two with respect to a
  • Movement axis A coaxial tubes 32 and 33, which define an annular piston chamber 34 between them and form an outer and an inner boundary wall of the piston chamber 34.
  • piston chamber 34 designed as an annular piston support piston 35 is slidably mounted in the direction of the movement axis A.
  • the support piston 35 is sealed by means of e.g. sealed in the form of sealing rings 36 and 37 with respect to the outer boundary wall 32 and the inner boundary wall 33 of the piston chamber 34.
  • annular piston chamber 34 is closed by an annular end wall 38, wherein the outer tube or the outer boundary wall 32 of the piston chamber 34 axially over the
  • End wall 38 also extends.
  • two bolt-shaped support members 41 and 42 are connected, which extend parallel to the movement axis A through unspecified openings in the end wall 38 into the space enclosed by the projecting portion of the outer boundary wall 32 of the piston chamber 34 space.
  • Motion axis A can be arranged distributed, and the two bolt-shaped support members could also be replaced by an annular support member.
  • a second female part 20 of a two-part die in the direction of the movement axis A is arranged axially displaceable.
  • Die part 20 comprises an annular die base 21 and a likewise annular die insert 22.
  • a second ram 51 is arranged axially displaceable.
  • a tapered portion 52 of the second ram 51 projects into the second female part 20.
  • the second female part 20 encloses the tapered portion 52 annularly and is slidably disposed relative to the tapered portion 52.
  • the front end 53 of the tapered portion 52 of the second ram 51 is minimally (in the figure right) of the front end face 23 of the die base 21.
  • the closing device further comprises a first female part 10 and a first Plunger 11, which is arranged on a mounting plate 13.
  • the first female part 10 is formed here in the embodiment by the provided with a hollow embossment 12 front end of the first ram 11.
  • the first female part 10 could also be formed as an independent part and arranged at the front end of the first ram 11.
  • the first die part 10, the first punch 11 and the mounting plate 13 have unspecified coaxial passages in which a rod-shaped holding member 14 in the direction of
  • Movement axis A is reciprocally slidably mounted.
  • the closing device also has a substantially rod-shaped
  • Discharge member 60 which is slidably mounted in an unspecified guide s opening in the end plate 31 of the piston chamber block 30 in the direction of the movement axis A and is kinematically connected to shock with the rear end face of the second ram 51.
  • the closing device has, for example, a cylindrical (high) pressure container 70, which communicates with the piston chamber 34 via a
  • the pressure vessel 70, the connecting line 71, the connection opening 39 and the part of the piston chamber 34 communicating therewith form a closed fluid chamber which is completely filled with an elastically compressible liquid pressure medium M.
  • the liquid pressure medium may e.g. Water or one
  • Hydraulic fluid (hydraulic oil) be.
  • the pressure vessel 70 ' is equipped with a piston 72 which is adjustably arranged in it, the piston of which
  • Piston rod 73 is guided through a wall of the pressure vessel 70 'through outward.
  • the effective volume of the pressure vessel 70 ' can be adjusted according to the respective requirements.
  • the effective volume of the pressure vessel 70 ' can be adjusted according to the respective requirements.
  • Pressure vessel 70 normally no longer adjusted.
  • the adjustability of the piston 72 is symbolized by the double arrow 74.
  • the first ram 11 is formed together with the first formed on it
  • Matrizenteil 10 by means of the mounting plate 13 in the direction of the movement axis A on the second female part 20 to and driven away from it.
  • the corresponding drive means are symbolized by a double arrow 15.
  • the rod-shaped holding member 14 is independent of the first ram 11 in the direction of the movement axis A on the second female part 20 to and driven away from it.
  • the corresponding drive means are by a Double arrow 16 symbolizes.
  • the ejection member 60 is in the direction of
  • the corresponding drive means are by a
  • Double arrow 61 symbolizes.
  • the functioning of the closing device is as follows:
  • a (preformed) workpiece W is positioned in front of the second female part 20 and is held there by the advanced holding member 14.
  • the first ram 11 with the first female part 10 is moved towards the second female part 20 by applying a corresponding external pressing force, wherein the first female part 10 does not completely close the second female part 20.
  • the workpiece W is pressed into the second female part 20, whereby the second ram 51 inwardly, i. partially displaced out of the second female part 20 out.
  • the ejection member 60 (in the figure) is shifted to the left.
  • the first press die 11 with the first die part 10 is advanced so far until the die is completely closed. In this case, there is already a first transformation (transverse extrusion) of the workpiece.
  • the second ram 51 and the ejector 60 are thereby moved further to the left.
  • the first ram 11 with the first female part 10 is advanced further, the second female part 20 also being moved inwards and the second ram 51 finally coming into abutment with the end plate 31 of the piston chamber block 30.
  • the second female part 20 is supported via the support members 41 and 42 and the annular support piston 35 at the in the piston chamber 34 located liquid pressure medium M springy. This cushioning takes place by compression of the pressure medium M im through the
  • the entire die with its two die parts 10 and 20 is pressed further against the resilient support by the pressure medium inwards (in the direction of the end plate 31).
  • the second female part 20 is now in its already mentioned end position.
  • the second ram 51 protruding on the face plate 31 can not move further inwardly, so that its front portion 52 penetrates into the second female part 20 and urges the workpiece W in the female mold, thereby forming it into its final shape.
  • the external pressing force acting on the first pressing die 11 and thus also on the second die part 20 is reduced (or completely canceled out).
  • the compressed pressure medium M can relax and drives via the support piston 35 and the support members 41 and 42, the two die parts 10 and 20 (in the figures) to the right until the second female part 20 has reached its initial position shown in FIG.
  • the second ram 51 initially remains in its position.
  • the first pressing die 11 is moved to the right together with the first die part 10, thereby opening the die.
  • the ejection element 60 is moved in the direction of the second die part 20.
  • the second ram 51 is advanced accordingly and pushes the finished formed workpiece W out of the second female part 20.
  • the holding member 14 temporarily engages in the finished formed workpiece W and holds it in position until it is transported away. Thereafter, the closing device is back in their
  • Fig. 10 is a second embodiment of the inventive
  • the support piston 35 is in this embodiment by means of annular gap seals 81 and 82 relative to the outer boundary wall 32 and the inner boundary wall 33 sealed. This type of seal is advantageous because of its constructive simplicity, especially with smaller dimensions of the closing device.
  • All other components of the closing device are identical to those of the exemplary embodiment of FIGS. 1-9 and are therefore also designated by the same reference numerals.
  • the operation of the closing device of FIG. 10 is identical to the functioning of the
  • connection opening 39, in the connecting line 71 and enclosed in the pressure vessel 70 elastically compressible liquid pressure medium M is in
  • the compression modulus of the pressure medium Essentially determined by the compression modulus of the pressure medium.
  • the compression modulus is about 2000 MPa, for hydraulic oil about 1600 MPa.
  • the compression modulus depends on pressure and temperature.
  • a certain volume reduction (compression) of the printing medium M is required.
  • the required compression pressure can be calculated from the compression modulus of the pressure medium using a replacement compression modulus (e.g., 2000 MPa for water or 1600 MPa for
  • Hydraulic oil is based and the relatively inaccurate value of the replacement compression module is compensated by over-dimensioning of the pressure vessel. It is advantageous if the active, that is filled with pressure medium volume of the pressure vessel as shown in Fig. 11 is adjustable. After the optimal volume setting of the pressure vessel is found, the filling volume of the pressure vessel is not adjusted during operation of the closing device. For the above-described closing device further constructive variations can be realized. It should be expressly mentioned here that the closing device, instead of the external pressure container 70 or 70 'connected via the connection line 71, also has an internal, for example, integrated in the piston chamber block 30
  • Pressure vessel could, which is in communication with the piston chamber 34 in communication. Even with such an integrated pressure vessel, the active filling volume can be made adjustable.
  • Liquid chamber nor a pressure medium supply are provided in the liquid chamber.
  • the pressure medium supply should be advantageously carried out via a check valve to the low pressure circuit, which is used to fill the system, to be able to separate from the high pressure circuit, which forms during forming.
  • the components 34, 35, 39, 41, 42, 70, 70 ', 71, M of the closing device forming a support arrangement for the second female part 20 can also be arranged to be movable, as in the exemplary embodiments illustrated in the figures, so that the whole complex is movable toward the first female part 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

L'invention concerne un dispositif de fermeture, de préférence destiné à l'extrusion latérale d'une pièce (W), comprenant une matrice (10, 20) constituée d'un premier élément de matrice (10) et d'un deuxième élément de matrice (20). Le premier élément de matrice (10) et le deuxième élément de matrice (20) peuvent être rapprochés l'un de l'autre le long d'un axe de déplacement (A) pour fermer la matrice et peuvent être écartés l'un de l'autre le long de l'axe de déplacement (A) pour ouvrir la matrice. Le deuxième élément de matrice (20) est disposé de façon à pouvoir coulisser dans la direction de l'axe de déplacement (A) en s'opposant à la force de support d'un dispositif de support élastique (34, 35, 39, 41, 42, 70, 71, M) d'une position initiale dans une position finale. Le dispositif de support comporte une chambre de liquide (34, 39, 71, 70) fermée et entièrement remplie d'un milieu liquide sous pression (M) compressible élastiquement, le milieu sous pression (M) supportant le deuxième élément de matrice (20). D'une part, le milieu sous pression (M) peut être comprimé par coulissement du deuxième élément de matrice (20) de sa position initiale dans sa position finale, et d'autre part le deuxième élément de matrice (20) peut être ramené de sa position finale dans sa position initiale par détente du milieu sous pression (M).
PCT/EP2017/064253 2016-06-14 2017-06-12 Dispositif de fermeture WO2017216089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00759/16A CH712553B1 (de) 2016-06-14 2016-06-14 Schliessvorrichtung, vorzugsweise zum Querfliesspressen eines Werkstücks.
CH00759/16 2016-06-14

Publications (1)

Publication Number Publication Date
WO2017216089A1 true WO2017216089A1 (fr) 2017-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/064253 WO2017216089A1 (fr) 2016-06-14 2017-06-12 Dispositif de fermeture

Country Status (2)

Country Link
CH (1) CH712553B1 (fr)
WO (1) WO2017216089A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110508738A (zh) * 2019-09-25 2019-11-29 浙江海洋大学 一种热模锻装置及热模锻方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030545A (ja) * 1983-07-28 1985-02-16 Sumitomo Heavy Ind Ltd 閉塞鍛造装置
US20010037669A1 (en) * 1998-05-06 2001-11-08 Kunihiko Tanaka Die system for full enclosed die forging
DE10047467A1 (de) * 2000-09-21 2002-04-18 Schuler Pressen Gmbh & Co Vorrichtung und Verfahren zum Umformen, insbesondere mit hydraulischer Schließvorrichtung
CN103331399A (zh) * 2013-02-25 2013-10-02 袁正敏 双作用环缸式对压机
US20150283599A1 (en) * 2014-04-07 2015-10-08 Musashi Seimitsu Industry Co., Ltd. Sizing method and sizing apparatus
DE102014208776B3 (de) * 2014-05-09 2015-11-05 Sms Meer Gmbh Vorrichtung zum Umformen von Schmiedeteilen und zugehörige Presse zum Schmieden
DE102014224724A1 (de) * 2014-12-03 2016-06-09 Robert Bosch Gmbh Hochdruckpumpe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030545A (ja) * 1983-07-28 1985-02-16 Sumitomo Heavy Ind Ltd 閉塞鍛造装置
US20010037669A1 (en) * 1998-05-06 2001-11-08 Kunihiko Tanaka Die system for full enclosed die forging
DE10047467A1 (de) * 2000-09-21 2002-04-18 Schuler Pressen Gmbh & Co Vorrichtung und Verfahren zum Umformen, insbesondere mit hydraulischer Schließvorrichtung
CN103331399A (zh) * 2013-02-25 2013-10-02 袁正敏 双作用环缸式对压机
US20150283599A1 (en) * 2014-04-07 2015-10-08 Musashi Seimitsu Industry Co., Ltd. Sizing method and sizing apparatus
DE102014208776B3 (de) * 2014-05-09 2015-11-05 Sms Meer Gmbh Vorrichtung zum Umformen von Schmiedeteilen und zugehörige Presse zum Schmieden
DE102014224724A1 (de) * 2014-12-03 2016-06-09 Robert Bosch Gmbh Hochdruckpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110508738A (zh) * 2019-09-25 2019-11-29 浙江海洋大学 一种热模锻装置及热模锻方法

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CH712553B1 (de) 2020-02-28
CH712553A1 (de) 2017-12-15

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