US3827271A - Die holding device in an indirect extrusion machine - Google Patents

Die holding device in an indirect extrusion machine Download PDF

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Publication number
US3827271A
US3827271A US00302507A US30250772A US3827271A US 3827271 A US3827271 A US 3827271A US 00302507 A US00302507 A US 00302507A US 30250772 A US30250772 A US 30250772A US 3827271 A US3827271 A US 3827271A
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United States
Prior art keywords
die
stem
threaded
semi
hollow
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 - Lifetime
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US00302507A
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English (en)
Inventor
S Kishino
H Amano
T Abe
R Tamura
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Japan Steel Works Ltd
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Japan Steel Works Ltd
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Filing date
Publication date
Application filed by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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
    • B21C23/218—Indirect extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C26/00—Rams or plungers for metal extruding; Discs therefor

Definitions

  • an elongated hollow stem 3a rigidly fixed at its base portion by a stem holder la and a stem stopper 2a mounts the die 4a by inserting its projection in a recess provided at the forward portion of the stem.
  • the die must be dismounted from the stem every time the extrusion of a billet is completed in order to remove the unextruded butt of the billet, and it is also necessary to mount another die to the stem for the next extrusion.
  • the hitherto known means for mounting a die to the stem of the indirect extrusion machine have many disadvantages, so notwithstanding the fact that the indirect extrusion method has basically many advantages comparing with a direct extrusion method, an indirect extrusion machine embodying the former method has not yet generally been adopted in the art.
  • the die holding device of the present invention comprises a die grip means to be mounted to the stem of an indirect extrusion machine, whereby the die is mounted to the stem by securing the die to the die grip means.
  • FIG. I is an elevational, sectional view showing a conventional means for mounting the die to the stem of an indirect extruding machine
  • FIG. 2 is an elevational partial sectional view showing another conventional means for mounting the die to the stem;
  • FIG. 4 is a view similar to FIG. 3 showing an alternative embodiment of the present invention.
  • FIG. 5 is an elevational, sectional view of the die gripper shown in FIG. 3;
  • FIG. 7 is an elevational, sectional view of the die gripper providing a die integrally in accordance with the present invention.
  • FIG. 8 is an elevational, sectional view of the die gripper combined with a die in accordance with the present invention.
  • a hollow stem 3 of an indirect extrusion machine is rigidly secured to the stern holder 1 by a stem securing ring 2 at its tapered base portion, and a die gripper 5 is secured to the stem 3 at its forward end.
  • the gripper 5 is provided with a screw thread 7 at the center of one of its end surfaces and a pipe 8, provided with threads at each end, is put through the hole of the hollow stem 3, whereby one of the threads of the pipe 8 is screwed to the threaded end of the die gripping means, while the other of the threads is screwed by a nut a to fasten the pipe 8 to the stem 3.
  • pins 10 are provided at the free end of the hollow stem 3 for centering the die gripper 5.
  • the die gripper 5 may be secured to the free end of the hollow stem 3 by screw threads 7' located on both of them.
  • the die gripper 5 has a semi-circular projection 11 at its forward end, as shown in FIGS. 5 and 6. This projection 11 engages in a circular groove 12 provided around the outer periphery of the die 4 as shown in FIG. 7 so that the axial displacement of the die 4 is prevented after it is mounted to the die gripper 4.
  • the die 4 may have a solid construction as shown in FIG. 7, but, in instances, where the shapes of the extruded objects vary frequently, a combined type die is preferable.
  • This combined type die comprises a die ring 13 similarly provided with a circumferential groove 12 at its outer periphery as shown in FIG. 8, into which a changeable die 4 and die backer 14 are inserted.
  • the die can snugly fit the bottom curved surface of the die gripper by the mere insertion of the die into the die gripper so that the die is stably held by the gripper, mounting and dismounting of the die are very simple. Moreover, since no threading of the die for its mounting to the stem is required, the need to discard the die because of damage of its threads is eliminated.
  • the stem is not required to be threaded so that it has an advantageously long life.
  • an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end
  • the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semicircular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semicircular projection, said hollow die grip member adapted to snugly receive a corresponding die within said semicircular projection.
  • an indirect extruding machine having a stern holder, a stern secured at one end thereof to the stem holder and the stem having a threaded opposite end
  • the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semicircular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, and a die having a groove provided around the periphery thereof adapted to engage said lip of said semi-circular projecting, whereby said die is snugly supported within said semi-circular projection.
  • a die mounting device and die combination in an indirect extruding machine having a stem holder comprising: a hollow stem secured at one end thereof to the stem holder of said indirect extruding machine; a pipe member positioned within said hollow stern and having threaded opposite peripheral end portions, one end portion thereof being secured to said stem holder, the other end portion thereof extending beyond said hollow stem; a hollow die grip member having one threaded end and an opposite end, said threaded end being connected to said extending end of said pipe member, said hollow die grip member having a semicircular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die grip member adapted to snugly receive a die within said semicircular projection; and a die having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.
  • the device of claim 3 further comprising a plurality of pins connected between said hollow die grip member and said stem for centering said hollow die grip member relative to said stem and further comprising a bolster member adapted to be interposed between the opposite end of said hollow die grip member and said die.
  • a die for use in anindirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, a threaded hollow die grip member having a threaded end and an end opposite thereto, said threaded end of said die grip member adapted to be connected to said threaded opposite end of said stem and said opposite end of said threaded hollow die grip member having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die comprising a body having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US00302507A 1971-11-25 1972-10-31 Die holding device in an indirect extrusion machine Expired - Lifetime US3827271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46094135A JPS5138317B2 (enrdf_load_stackoverflow) 1971-11-25 1971-11-25

Publications (1)

Publication Number Publication Date
US3827271A true US3827271A (en) 1974-08-06

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Application Number Title Priority Date Filing Date
US00302507A Expired - Lifetime US3827271A (en) 1971-11-25 1972-10-31 Die holding device in an indirect extrusion machine

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US (1) US3827271A (enrdf_load_stackoverflow)
JP (1) JPS5138317B2 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309286A1 (fr) * 1975-05-02 1976-11-26 Alusuisse Pilon presseur comportant au moins une cavite sensiblement axiale pour le passage du profile
DE2844196A1 (de) * 1977-10-19 1979-04-26 Kobe Steel Ltd Pressduesenschaft
US20100024509A1 (en) * 2006-10-16 2010-02-04 Ube Machinery Corporation Ltd., a corporation of Japan Stem slide device
US20130025103A1 (en) * 2011-07-26 2013-01-31 Presezzi Extrusion S.P.A. Device for application to metal material extruding press assemblies for quickly replacing a heel element and/or a slotted tie-rod element in the press assemblies

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514407Y2 (enrdf_load_stackoverflow) * 1974-11-05 1980-04-02

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954869A (en) * 1957-08-14 1960-10-04 Lake Erie Machinery Corp Extrusion press
US3522721A (en) * 1968-03-01 1970-08-04 Reynolds Metals Co Apparatus for and method of making indirect extrusions
US3541831A (en) * 1967-04-07 1970-11-24 Int Nickel Co Extrusion mandrel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954869A (en) * 1957-08-14 1960-10-04 Lake Erie Machinery Corp Extrusion press
US3541831A (en) * 1967-04-07 1970-11-24 Int Nickel Co Extrusion mandrel
US3522721A (en) * 1968-03-01 1970-08-04 Reynolds Metals Co Apparatus for and method of making indirect extrusions

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309286A1 (fr) * 1975-05-02 1976-11-26 Alusuisse Pilon presseur comportant au moins une cavite sensiblement axiale pour le passage du profile
US4223546A (en) * 1975-05-02 1980-09-23 Swiss Aluminium Ltd. Extrusion press stem with at least one channel running approximately axially through it
DE2844196A1 (de) * 1977-10-19 1979-04-26 Kobe Steel Ltd Pressduesenschaft
US20100024509A1 (en) * 2006-10-16 2010-02-04 Ube Machinery Corporation Ltd., a corporation of Japan Stem slide device
US8438892B2 (en) * 2006-10-16 2013-05-14 Ube Machinery Corporation, Ltd. Stem slide device
US20130025103A1 (en) * 2011-07-26 2013-01-31 Presezzi Extrusion S.P.A. Device for application to metal material extruding press assemblies for quickly replacing a heel element and/or a slotted tie-rod element in the press assemblies
US9205474B2 (en) * 2011-07-26 2015-12-08 Presezzi Extrusion S.P.A. Device for application to metal material extruding press assemblies for quickly replacing a heel element and/or a slotted tie-rod element in the press assemblies

Also Published As

Publication number Publication date
JPS5138317B2 (enrdf_load_stackoverflow) 1976-10-21
JPS4857871A (enrdf_load_stackoverflow) 1973-08-14

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