WO2005068100A1 - Verfahren zur regelung der lage eines lochdorns einer strangpresse zum herstellen von hohlprofilen - Google Patents
Verfahren zur regelung der lage eines lochdorns einer strangpresse zum herstellen von hohlprofilen Download PDFInfo
- Publication number
- WO2005068100A1 WO2005068100A1 PCT/DE2005/000049 DE2005000049W WO2005068100A1 WO 2005068100 A1 WO2005068100 A1 WO 2005068100A1 DE 2005000049 W DE2005000049 W DE 2005000049W WO 2005068100 A1 WO2005068100 A1 WO 2005068100A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mandrel
- cylinder
- piercing
- extrusion press
- punch
- 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
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- 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
- B21C23/217—Tube extrusion presses
Definitions
- the invention relates to a method for controlling the position of a piercing mandrel, arranged in a hydraulic punching device, consisting of a cylinder and a piston, which form a piercing mandrel cylinder, an extrusion press for producing pipes which are loaded from a receiver upstream of the extrusion tool and by means of the Pin punch punched blocks are pressed out.
- a metal extrusion press for the production of hollow profiles or tubes has become known from DE patent specification 1 227 858.
- the piston of the piercing mandrel cylinder is connected to a perforated cross-beam which is slidably guided in the barrel of the press.
- the perforated mandrel In order to position the perforated mandrel guided by the press punch in the tool / die during the extrusion of hollow profiles or pipes and to maintain this position with high accuracy during pressing, the perforated mandrel is held in position by the piercing mandrel cylinder during the pressing process in practical operation of the extrusion press , In order for this position of the punch to be held in the tool, the cylinder has to move the punch back at exactly the same speed as the press punch is moving forward.
- disturbances due to forming forces, friction and hydraulic compressibility come into play, which must be compensated for by the control system in a highly dynamic manner.
- the invention is therefore based on the object of providing a method of the type mentioned at the outset which, in a simple manner and in particular without requiring servo valves, enables a mandrel position control which corresponds to all requirements.
- This object is achieved in that the punch cylinder is driven directly by pumps set to a pre-calculated delivery rate depending on the pressing speed and an additional delivery rate is given to the pre-calculated pump delivery rate, with the Regulating the position of the piercing mandrel, a control valve acting on the ring side of the piercing mandrel cylinder is connected to a tank. Due to the direct drive, ie without an intermediate control valve, so that there is no servo valve between the pump and mandrel cylinder, rather only conventional, cost-effective and inexpensive cartridge valves can be used for the direction of movement, no pressure losses are generated for the pump volume flow. It can thus be achieved that the pump pressure corresponds to the working pressure at the piercing cylinder. In addition, there are almost no energy losses and the working pressures on the pumps are lower.
- the direct drive only requires a single, small, with very high accuracy and fast-working control valve for the entire speed range. This is accompanied by a very large cost saving.
- the pumps are set to a delivery rate as a function of the pressing speed, which produces an approximately equal retraction speed of the punch cylinder.
- the piercing mandrel thus assumes approximately a constant position in the tool during the entire pressing process.
- an additional delivery rate is added to the pump demand rate. This additional delivery rate precludes the punch cylinder from moving out of the tool position backwards against the pressing direction.
- the small control valve provided for regulation on the ring side of the piercing cylinder creates the connection from the ring surface of the cylinder to the tank and regulates the amount of oil required for positional positioning to the tank.
- the punch is moved back out of the tool; if, on the other hand, the amount of oil to the tank is larger, the piercing mandrel is pushed further into the tool.
- the control valve maintaining the position via a controller thus compensates for the disturbance variables.
- the outlet pressure of the piercing cylinder be regulated to a fixed pressure is set.
- a mandrel position control can also be implemented when the tensile forces on the mandrel decrease or when the forces are reversed.
- a proportional pressure relief valve on the cylinder outlet side or on the piston surface side of the piercing cylinder. A stable control behavior can thus be achieved even with reversing or falling forces on the mandrel.
- the pressures on both sides of the mandrel cylinder are monitored, for example by means of pressure load cells arranged both on the ring side and on the outlet side of the mandrel cylinder, it is possible to switch on a second regulator and monitor the pressures on both cylinder sides when the pressure falls below one the outlet pressure so that the set pressure is set on the retracting side of the mandrel cylinder.
- the hydraulic system is therefore always in a clamped state and enables regulation independent of the direction of force.
- the punch cylinder 8 is driven directly by pumps 11.
- its ring side 12 is connected to the pump 11 shown via a hydraulic line 13 connected, which is assigned an inlet valve 14 in the conveying direction.
- a tank line 15 branching off from the hydraulic line 13 has an integrated small control valve (NG10) 16 connected to a regulator (not shown) and opens into a tank 17.
- NG10 integrated small control valve
- the delivery quantity of the pumps 11, which is precalculated depending on the pressing speed, is fed in to the ring side 12 of the piercing mandrel cylinder 8 to correct disturbance variables.
- the piercing pin 10 is immediately moved out of the tool 3 when the amount of oil to the tank 17 is less than the value of the additional delivery amount.
- the punch 10 is moved further into the tool 3 when the amount of oil to the tank 17 becomes greater than the value of the additional delivery amount.
- the piercing mandrel 10 thus always finds an approximately constant position in the tool 3 during the entire pressing process.
- the two cylinder sides 12, 18 of the piercing cylinder 8 are monitored for pressure.
- both its ring side 12 and its outlet side 18 are assigned a pressure cell 19a or 19b.
- a proportional pressure relief valve or pressure control valve 21 is connected to a further regulator, not shown.
- the pressure on the outlet side 18 can be raised so far when the pressure falls below a predetermined value that the pressure established on the ring side 12 or retraction side of the piercing pin cylinder 8 is established ,
- the hydraulic system is thus always in a clamped state and enables regulation independent of the Direction of force, so that reaction to falling tensile forces on the mandrel 10 or when the forces are reversed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Control Of Presses (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502005001481T DE502005001481D1 (de) | 2004-01-15 | 2005-01-14 | Verfahren zur regelung der lage eines lochdorns einer strangpresse zum herstellen von hohlprofilen |
EP05706681A EP1706222B1 (de) | 2004-01-15 | 2005-01-14 | Verfahren zur regelung der lage eines lochdorns einer strangpresse zum herstellen von hohlprofilen |
US10/586,202 US8011219B2 (en) | 2004-01-15 | 2005-01-14 | Method of controlling mandrel in a tube-extruding press |
JP2006548109A JP4416799B2 (ja) | 2004-01-15 | 2005-01-14 | 中空形材を製作するための押出成形機の穴あけマンドレルの位置を制御する方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004002377 | 2004-01-15 | ||
DE102004002377.8 | 2004-01-15 | ||
DE102005001764A DE102005001764A1 (de) | 2004-01-15 | 2005-01-13 | Verfahren zur Regelung der Lage eines Lochdorns einer Strangpresse zum Herstellen von Hohlprofilen |
DE102005001764.9 | 2005-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005068100A1 true WO2005068100A1 (de) | 2005-07-28 |
Family
ID=34796605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/000049 WO2005068100A1 (de) | 2004-01-15 | 2005-01-14 | Verfahren zur regelung der lage eines lochdorns einer strangpresse zum herstellen von hohlprofilen |
Country Status (7)
Country | Link |
---|---|
US (1) | US8011219B2 (de) |
EP (1) | EP1706222B1 (de) |
JP (1) | JP4416799B2 (de) |
AT (1) | ATE372836T1 (de) |
DE (2) | DE102005001764A1 (de) |
ES (1) | ES2294678T3 (de) |
WO (1) | WO2005068100A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101773947A (zh) * | 2010-03-25 | 2010-07-14 | 中南大学 | 一种数字式水压挤压机速度控制系统和方法 |
CN104653525A (zh) * | 2015-02-16 | 2015-05-27 | 梁润明 | 一种型材挤压机闭式供油系统 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011009689B4 (de) * | 2010-02-25 | 2012-09-13 | Sms Meer Gmbh | Strangpresse zum Herstellen von Profilen aus Nichteisenmetall |
JP5538096B2 (ja) * | 2010-06-30 | 2014-07-02 | 三菱アルミニウム株式会社 | 油圧装置の制御方法と油圧装置 |
CN103157689B (zh) * | 2011-12-15 | 2016-08-03 | 广东科达洁能股份有限公司 | 精确定位的液压装置 |
JP5945953B2 (ja) * | 2012-10-11 | 2016-07-05 | 宇部興産機械株式会社 | 複動型押出プレス装置 |
JP5979491B2 (ja) * | 2012-11-12 | 2016-08-24 | 宇部興産機械株式会社 | 複動型押出プレス |
JP6232745B2 (ja) * | 2013-05-24 | 2017-11-22 | 宇部興産機械株式会社 | 複動型押出プレス |
CN104690102B (zh) * | 2015-03-10 | 2018-04-10 | 梁润明 | 一种改进型采用闭式加压供油型材挤压机 |
CN107497872A (zh) * | 2017-09-13 | 2017-12-22 | 兴发铝业(成都)有限公司 | 新型铝型材挤压机节能系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3362208A (en) * | 1965-01-07 | 1968-01-09 | Reynolds Metals Co | Extruding metal members of varying wall thickness |
US3709013A (en) * | 1969-05-29 | 1973-01-09 | Sack Gmbh Maschf | Extrusion press for rod or tube |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1102085B (de) * | 1959-11-16 | 1961-03-16 | Schloemann Ag | Hydraulische Metallrohrpresse |
DE1227858B (de) | 1960-01-23 | 1966-11-03 | Schloemann Ag | Liegende Metallstrangpresse mit einem in einem Zylinder gefuehrten Hauptpresskolben |
DE1452452A1 (de) * | 1962-12-06 | 1969-04-24 | Schloemann Ag | Hydraulische Rohr- und Strangpresse mit hinter dem Pressenzylinder angeordneter Lochvorrichtung |
US3868841A (en) * | 1973-03-30 | 1975-03-04 | Aluminum Co Of America | Process and means for making thick end tube and pipe |
US3950979A (en) * | 1974-10-04 | 1976-04-20 | Western Electric Company, Inc. | Apparatus and method for tube extrusion |
JPS5456967A (en) * | 1977-10-15 | 1979-05-08 | Kobe Steel Ltd | Indirect extrusion method |
US4397175A (en) * | 1981-04-24 | 1983-08-09 | The Gleason Works | Apparatus for controlling the movement of a reciprocatory hydraulically driven element |
US4523444A (en) * | 1982-12-13 | 1985-06-18 | Fuchs Jr Francis J | Methods of and apparatus for controlling the gap between a mandrel and die during extrusion |
-
2005
- 2005-01-13 DE DE102005001764A patent/DE102005001764A1/de not_active Withdrawn
- 2005-01-14 JP JP2006548109A patent/JP4416799B2/ja active Active
- 2005-01-14 WO PCT/DE2005/000049 patent/WO2005068100A1/de active Application Filing
- 2005-01-14 AT AT05706681T patent/ATE372836T1/de active
- 2005-01-14 US US10/586,202 patent/US8011219B2/en active Active
- 2005-01-14 ES ES05706681T patent/ES2294678T3/es active Active
- 2005-01-14 EP EP05706681A patent/EP1706222B1/de active Active
- 2005-01-14 DE DE502005001481T patent/DE502005001481D1/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3362208A (en) * | 1965-01-07 | 1968-01-09 | Reynolds Metals Co | Extruding metal members of varying wall thickness |
US3709013A (en) * | 1969-05-29 | 1973-01-09 | Sack Gmbh Maschf | Extrusion press for rod or tube |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101773947A (zh) * | 2010-03-25 | 2010-07-14 | 中南大学 | 一种数字式水压挤压机速度控制系统和方法 |
CN101773947B (zh) * | 2010-03-25 | 2011-09-07 | 中南大学 | 一种数字式水压挤压机速度控制系统和方法 |
CN104653525A (zh) * | 2015-02-16 | 2015-05-27 | 梁润明 | 一种型材挤压机闭式供油系统 |
Also Published As
Publication number | Publication date |
---|---|
ATE372836T1 (de) | 2007-09-15 |
JP4416799B2 (ja) | 2010-02-17 |
EP1706222B1 (de) | 2007-09-12 |
DE502005001481D1 (de) | 2007-10-25 |
JP2007517669A (ja) | 2007-07-05 |
DE102005001764A1 (de) | 2005-10-06 |
US8011219B2 (en) | 2011-09-06 |
EP1706222A1 (de) | 2006-10-04 |
ES2294678T3 (es) | 2008-04-01 |
US20080245125A1 (en) | 2008-10-09 |
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