GB1312703A - Extrusion press - Google Patents

Extrusion press

Info

Publication number
GB1312703A
GB1312703A GB2190270A GB2190270A GB1312703A GB 1312703 A GB1312703 A GB 1312703A GB 2190270 A GB2190270 A GB 2190270A GB 2190270 A GB2190270 A GB 2190270A GB 1312703 A GB1312703 A GB 1312703A
Authority
GB
United Kingdom
Prior art keywords
piercer
valve
ram
actuated
piston
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.)
Expired
Application number
GB2190270A
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.)
Maschinenfabrik Sack GmbH
Original Assignee
Maschinenfabrik Sack GmbH
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
Priority claimed from DE19691927396 external-priority patent/DE1927396C3/en
Application filed by Maschinenfabrik Sack GmbH filed Critical Maschinenfabrik Sack GmbH
Publication of GB1312703A publication Critical patent/GB1312703A/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Extrusion Of Metal (AREA)

Abstract

1312703 Extruding; billet piercing MASCHINENFABRIK SACK GmbH 6 May 1970 [29 May 1969] 21902/70 Headings B3H and B3P An extrusion press which can be used to produce either rod or tube includes an hydraulic piercer piston 13 inside the main extrusion ram 4 and a control valve 20 actuated in dependence on the position of the piercer tip 15a relative to the die 8 to supply fluid to the piston to keep it substantially stationary. In one form the valve is actuated by an abutment 30 on a cord 27 attached to the piston at one end and a spring- biased pulley 28 at the other end. Alternatively the valve 20 may be electrically actuated or a variable delivery pump could be used to vary the supply to the piston. In operation the piercer tip 15a oscillates slightly within the die. The press can be used to extrude tubes using a piercer which moves with the ram in which case the abutment 30 is positioned so that the valve 20 is not actuated and hence the piercer is maintained fully extended relative to the ram 4 under the control of a valve 19. When the press is used to extrude rods the piercer is maintained fully retracted by appropriately positioning the valve 19. For extruding tubes using a substantially stationary piercer the valve 19 is closed and the abutment 30 positioned so that its separation from the valve actuator 32 is equal to the distance between the piercer tip 15a and the die 8. Hence as the ram advances the piercer is fully advanced until it enters the die. For extruding tubes using a moving piercer the valve 19 is actuated to fully retract the piercer into the ram. When the ram abuts the workpiece a pressure sensitive switch closes the valve 19 to keep the piercer retracted. The ram upsets the workpiece and is then slightly retracted to allow for the backward extrusion caused by the piercing. After piercing the piereer is maintained in its advanced position during the extrusion.
GB2190270A 1969-05-29 1970-05-06 Extrusion press Expired GB1312703A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691927396 DE1927396C3 (en) 1969-05-29 Device for holding the mandrel axially in relation to the die in a pipe extrusion press

Publications (1)

Publication Number Publication Date
GB1312703A true GB1312703A (en) 1973-04-04

Family

ID=5735523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2190270A Expired GB1312703A (en) 1969-05-29 1970-05-06 Extrusion press

Country Status (6)

Country Link
US (1) US3709013A (en)
JP (1) JPS4926188B1 (en)
AT (1) AT300508B (en)
CH (1) CH503525A (en)
FR (1) FR2048967A5 (en)
GB (1) GB1312703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447339A (en) * 2013-08-23 2013-12-18 浙江工业大学 Triaxial high-frequency composite flutter cold extrusion die

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868841A (en) * 1973-03-30 1975-03-04 Aluminum Co Of America Process and means for making thick end tube and pipe
DE2704652A1 (en) * 1977-02-04 1978-08-17 Schloemann Siemag Ag ARRANGEMENT FOR LIMITING THE DORN STROKE IN METAL EXTRUSION AND TUBE PRESSES
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
DE102005001764A1 (en) * 2004-01-15 2005-10-06 Sms Eumuco Gmbh Method for regulating the position of a piercing punch of an extrusion press for producing hollow profiles
CN100443208C (en) * 2006-11-10 2008-12-17 钱宗富 Method for extruding and stretching short pipe to long pipe and its cold extrusion device
CN102380517B (en) * 2011-10-19 2014-03-26 浙江工业大学 Multifunctional vibration extrusion die based on electro-hydraulic servo driving
CN102581054B (en) * 2012-02-29 2014-03-26 浙江工业大学 High frequent chattering cold extruding die possessing ejection rod
US9486849B2 (en) 2012-09-12 2016-11-08 Ube Machinery Corporation, Ltd. Double-action extrusion press
JP5979491B2 (en) * 2012-11-12 2016-08-24 宇部興産機械株式会社 Double acting extrusion press
JP6232745B2 (en) 2013-05-24 2017-11-22 宇部興産機械株式会社 Double acting extrusion press
WO2015083536A1 (en) 2013-12-04 2015-06-11 宇部興産機械株式会社 Direct double-action extrusion press
CN104084440B (en) * 2014-07-22 2016-04-13 株洲市文佳实业有限公司 The shaped device of forging molding is squeezed for plastic deformation
CN104226871B (en) * 2014-07-22 2016-08-24 株洲市文佳实业有限公司 Plastic deformation squeezes forging molding method
CN112170760B (en) * 2020-08-27 2022-09-16 天津市天锻压力机有限公司 Vertical rotary extrusion hydraulic press

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063562A (en) * 1934-04-12 1936-12-08 Sparks Processes Inc Manufacture of extruded metal shapes by hot hydraulic extrusion
US3362208A (en) * 1965-01-07 1968-01-09 Reynolds Metals Co Extruding metal members of varying wall thickness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447339A (en) * 2013-08-23 2013-12-18 浙江工业大学 Triaxial high-frequency composite flutter cold extrusion die

Also Published As

Publication number Publication date
US3709013A (en) 1973-01-09
JPS4926188B1 (en) 1974-07-06
CH503525A (en) 1971-02-28
FR2048967A5 (en) 1971-03-19
DE1927396A1 (en) 1970-12-10
AT300508B (en) 1972-07-25
DE1927396B2 (en) 1977-04-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee