WO2004033123A1 - Device for transverse extrusion of workpieces and operating method for said device - Google Patents
Device for transverse extrusion of workpieces and operating method for said device Download PDFInfo
- Publication number
- WO2004033123A1 WO2004033123A1 PCT/EP2003/008865 EP0308865W WO2004033123A1 WO 2004033123 A1 WO2004033123 A1 WO 2004033123A1 EP 0308865 W EP0308865 W EP 0308865W WO 2004033123 A1 WO2004033123 A1 WO 2004033123A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- die
- plunger
- pressure
- halves
- blank
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
-
- 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
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
Definitions
- the invention relates to a device for the transverse extrusion of workpieces according to the preamble of claim 1.
- the forming of the workpieces takes place in two superimposed die halves, the workpiece being pressed between two punches in such a way that part of the material is formed transversely to the pressing direction in the die halves Cavities evades.
- the die halves are held together by force-loaded devices, preferably by hydraulic or pneumatic pistons, which have to exert such a high force that the forming forces are unable to open the die halves.
- Such a device is shown in DE 199 22 666.
- a disadvantage of such complicatedly constructed tools is that the blank to be formed can be inserted into the tool only with difficulty and often inaccurately. Furthermore, it is disadvantageously not ensured that the blank is in the correct position in the forming tool during the forming, preferably in the center thereof and in the center of the parting plane.
- the invention has for its object to design a device for cross extrusion of workpieces such that the blank can be easily inserted into this device and provide means that hold the blank in the intended position in the tool.
- Claim 11 describes a preferred method for operating a device according to claims 1 to 10.
- the means according to the invention can be used to achieve a targeted control of the flow behavior during the forming process. This is achieved in that the pressure chambers acting on the rams can be regulated separately for each die half with regard to their force-time behavior.
- FIG. 1 shows the device in the open state
- FIG. 2 shows the device according to FIG. 1 after fixing the blank
- FIG. 3 shows the device in the closed state
- FIG. 4 shows the device after the forming process.
- the device shown is particularly suitable for cross extrusion of workpieces on horizontally working forming machines, preferably multi-stage forming machines.
- the shaping process can also be carried out in several tools in several shaping steps.
- the halves of the forming device are constructed approximately identically.
- Each device half has a holding device 1, 2.
- These holding devices 1, 2 are connected to the press table and press ram (not shown in more detail) or the die and ram-side receiving device of a horizontal press.
- the holding devices 1, 2 each carry a cylinder pot 3, 4.
- These cylinder pots 3, 4 in turn carry annular pistons 5, 6, which in the jackets of the cylinder pots 3, 4 and each with a sleeve-shaped extension 7, 8, in holes in the bottoms of Cylinder pots 3, 4 are guided.
- the die halves 9, 10 are fastened to the end faces of the annular pistons 5, 6, these die halves 9, 10 being prestressed with reinforcements 11, 12 against radial expansion.
- the die halves 9, 10 are penetrated axially centrally by plungers 13, 14. These plungers 13, 14 are guided in the die halves 9, 10 and in a central bore through the annular pistons 5, 6. The plungers 13, 14 rest on the tool side via intermediate pieces 15, 16 on pressure pistons 17, 18.
- pressure chambers 19, 20 are formed between the cylinder pots 3, 4 and the annular pistons 5, 6, which can be pressurized with pressurized liquid or pressurized gas or air.
- Corresponding pressure chambers 21, 22 are arranged above the pressure pistons 17, 18 in order to be able to pressurize them.
- Figure 1 shows the extended tool.
- the blank 23 can be brought between the extended plungers 13, 14 and held here by grippers (represented by arrows).
- the plungers 13, 14 then move towards one another, as shown in FIG.
- this can be done by moving the press ram forward onto the press table.
- this can also be done, for example, by advancing the upper and / or lower annular piston 6, 7 in the cylinder cup 3, 4.
- this can also be done, for example, by advancing the plungers 13, 14, which must then be in the retracted position in the starting position.
- the die halves 9, 10 are then moved together, as shown in FIG. 3.
- Devices for threading and positioning the tool halves can be used.
- a high hydraulic or pneumatic pressure must then be built up in the pressure chambers 19, 20 that the subsequent forming of the blank 23 into the finished workpiece 24 (shown in FIG. 4) does not lead to a gaping of the die halves 9, 10.
- the plungers 13, 14 are designed such that they bear against the holding devices 1, 2 via the intermediate pieces 15, 16 and the pressure pistons 17, 18 before the actual shaping process begins. This means that the full force of the press ram can be used for forming.
- FIG. 4 shows the device after the blank 23 has been formed into the finished workpiece 24.
- the annular pistons 5, 6 are moved into the cylinder pots 3, 4.
- the hydraulic fluid or the pneumatic medium are appropriately controlled or regulated discharged or compressed.
- the force-time behavior of all parts of the device can be controlled in a targeted manner by controlled discharge or compression of the hydraulic fluid or the pneumatic medium, for example via control valves. This can be ensured, on the one hand, by the targeted, controlled discharge of the hydraulic fluid or the pneumatic medium from the pressure chambers 21, 22, so that the blank 23 in every phase of its forming into the workpiece 24 has the correct position with respect to the movement of the plungers 13, 14 is guaranteed in the die halves 9, 10. Appropriate flow behavior can even be achieved by appropriate changes. This measure can be supported through the controlled discharge of the hydraulic fluid or the pneumatic medium from the pressure chambers 19, 20.
- one or both of the plungers 13, 14 can serve as ejectors. It is even possible that the finished workpiece can be held between the plungers 13, 14 and then picked up by a gripping device and fed to a further processing in a targeted manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Extrusion Of Metal (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Press Drives And Press Lines (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50307782T DE50307782D1 (en) | 2002-10-08 | 2003-08-09 | DEVICE FOR FLUID PRESSING OF WORKPIECES AND METHOD FOR OPERATING SUCH A DEVICE |
AU2003263206A AU2003263206A1 (en) | 2002-10-08 | 2003-08-09 | Device for transverse extrusion of workpieces and operating method for said device |
EP03807787A EP1551574B2 (en) | 2002-10-08 | 2003-08-09 | Device for transverse extrusion of workpieces and operating method for said device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10246940.7 | 2002-10-08 | ||
DE10246940A DE10246940C5 (en) | 2002-10-08 | 2002-10-08 | Device for cross-extrusion of workpieces and method for operating such a device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004033123A1 true WO2004033123A1 (en) | 2004-04-22 |
Family
ID=32038341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/008865 WO2004033123A1 (en) | 2002-10-08 | 2003-08-09 | Device for transverse extrusion of workpieces and operating method for said device |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1551574B2 (en) |
AT (1) | ATE367872T1 (en) |
AU (1) | AU2003263206A1 (en) |
DE (2) | DE10246940C5 (en) |
ES (1) | ES2287571T5 (en) |
WO (1) | WO2004033123A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103331399A (en) * | 2013-02-25 | 2013-10-02 | 袁正敏 | Double-acting annular cylinder counter-extrusion machine |
CN113290067A (en) * | 2021-04-23 | 2021-08-24 | 靖江市海源有色金属材料有限公司 | Extrusion device of terminal section bar |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4977773A (en) * | 1988-09-13 | 1990-12-18 | Mitsubishi Jukogyo Kabushiki Kaisha | Double action die set for closed forging |
DE19922659A1 (en) * | 1999-05-18 | 2000-12-07 | Forschungsges Umformtechnik | Hydraulic locking device for cross extrusion of workpieces |
DE19922660A1 (en) * | 1999-05-18 | 2000-12-07 | Forschungsges Umformtechnik | Closure device for transverse impact extrusion of components has ring piston nitrogen gas pressure springs between mold parts and support plates |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2027692B2 (en) † | 1970-06-05 | 1974-01-03 | F.B. Hatebur Ag, Basel (Schweiz) | Cross transport hot drop forging press |
JPH11314134A (en) * | 1998-05-06 | 1999-11-16 | Komatsu Ltd | Die device for closed forging |
JP3499777B2 (en) † | 1999-09-10 | 2004-02-23 | 株式会社阪村機械製作所 | Closed forging device |
DE10030792C2 (en) † | 2000-06-29 | 2003-07-24 | Hatebur Umformmaschinen Ag Rei | Multi-stage press, in particular cross transport press, with hydraulic closing device |
DE10047467C5 (en) * | 2000-09-21 | 2009-08-06 | Schuler Pressen Gmbh & Co. Kg | Apparatus and method for forming, in particular with hydraulic closing device |
-
2002
- 2002-10-08 DE DE10246940A patent/DE10246940C5/en not_active Expired - Lifetime
-
2003
- 2003-08-09 DE DE50307782T patent/DE50307782D1/en not_active Expired - Lifetime
- 2003-08-09 EP EP03807787A patent/EP1551574B2/en not_active Expired - Lifetime
- 2003-08-09 AU AU2003263206A patent/AU2003263206A1/en not_active Abandoned
- 2003-08-09 ES ES03807787T patent/ES2287571T5/en not_active Expired - Lifetime
- 2003-08-09 WO PCT/EP2003/008865 patent/WO2004033123A1/en active IP Right Grant
- 2003-08-09 AT AT03807787T patent/ATE367872T1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4977773A (en) * | 1988-09-13 | 1990-12-18 | Mitsubishi Jukogyo Kabushiki Kaisha | Double action die set for closed forging |
DE19922659A1 (en) * | 1999-05-18 | 2000-12-07 | Forschungsges Umformtechnik | Hydraulic locking device for cross extrusion of workpieces |
DE19922660A1 (en) * | 1999-05-18 | 2000-12-07 | Forschungsges Umformtechnik | Closure device for transverse impact extrusion of components has ring piston nitrogen gas pressure springs between mold parts and support plates |
Also Published As
Publication number | Publication date |
---|---|
DE50307782D1 (en) | 2007-09-06 |
EP1551574A1 (en) | 2005-07-13 |
EP1551574B1 (en) | 2007-07-25 |
DE10246940A1 (en) | 2004-04-22 |
DE10246940B4 (en) | 2006-11-02 |
DE10246940C5 (en) | 2008-07-03 |
ES2287571T5 (en) | 2011-05-20 |
ATE367872T1 (en) | 2007-08-15 |
EP1551574B2 (en) | 2011-01-12 |
ES2287571T3 (en) | 2007-12-16 |
AU2003263206A1 (en) | 2004-05-04 |
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