US3651681A - Apparatus for use in forming shells from billets - Google Patents

Apparatus for use in forming shells from billets Download PDF

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Publication number
US3651681A
US3651681A US845253A US3651681DA US3651681A US 3651681 A US3651681 A US 3651681A US 845253 A US845253 A US 845253A US 3651681D A US3651681D A US 3651681DA US 3651681 A US3651681 A US 3651681A
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US
United States
Prior art keywords
billet
nose portion
housing
punch
recess
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
Application number
US845253A
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English (en)
Inventor
Ronald W Eames
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.)
Chesterfield Tube Co Ltd
Original Assignee
Chesterfield Tube Co Ltd
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 Chesterfield Tube Co Ltd filed Critical Chesterfield Tube Co Ltd
Application granted granted Critical
Publication of US3651681A publication Critical patent/US3651681A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21C23/02—Making uncoated products
    • B21C23/20—Making uncoated products by backward extrusion

Definitions

  • apparatus for use in forming shells from billets which comprises a punch adapted to be connected to a press ram and having a billet-engaging nose portion at its leading end, there being also provided a billet supporting assembly and a nose portion supporting ring, said billet supporting assembly comprising a housing adapted to be mounted on the bed of a press and having at its upper end an aperture through which said nose portion'of the punch can pass, said housing having a hollow interior in which is supported a billet block having a recess adapted to receive a billet, the housing having above said billet block a pair of laterally directed and oppositely disposed apertures through which access can be gained to the interior of the housing, the diameter of said nose portion of the punch being less than the diameter of said recess in the billet block whereby a billet placed in the recess will be extruded backwardly around said nose portion as the latter is advanced into the recess on movement of the press ram towards the press bed, said ring serving to support the nose portion during the initial stages
  • the accompanying drawing is a part-sectional elevation illustrating one example of apparatus constructed in accordance with the present invention.
  • a punch generally indicated by reference numeral l and having at one end a nose portion 11 which is adapted to engage a billet, together with a supporting portion 12 which is connected to said nose portion 11.
  • the punch is mounted in any convenient manner to the ram 13 of a press so that the punch can float relative to the ram.
  • a billet supporting assembly which includes a housing 14 of generally tubular configuration adapted to be secured in any convenient manner to the bed 15 of the press.
  • a housing 14 of generally tubular configuration adapted to be secured in any convenient manner to the bed 15 of the press.
  • an aperture 16 in which is mounted a bearing 17.
  • the aperture 16 is large enough to admit with clearance the nose portion 11 of the punch but during the operative stroke of the punch the aforesaid supporting portion 12 of the punch will be guided and supported by said bearing 17.
  • the housing 14 serves to accommodate a billet block 18 which may rest on an anvil l9 projecting into the hollow interior of the housing, said billet block being formed with a recess 20 in which a billet ('not shown) can be placed.
  • the diameter of said recess 20 in the billet block is somewhat greater than the nose portion 11 of the punch whereas the billet when placed in the billet block will fill said recess 20.
  • a nose portion supporting ring 21 which in use and as shown in the drawing will be located within the hollow interior of the housing 14. Furthermore as shown in the drawing the housing is provided on each side at the upper end of its hollow interior with a window or aperture 22 by means of which access can be obtained to the interior of the housing.
  • the punch 10 In use the punch 10 would firstly be placed in its withdrawn or upper position as shown in full lines in the drawing and the billet block 18 would be inserted through an aperture or side window 22 and then lowered into the housing so that it is supported on top of the anvil 19. The billet is then placed in the recess in the billet block and finally the ring 21 also inserted into the interior of the housing so that it rests on top of the billet and billet block. The punch 10 is then lowered on the ram so that the nose portion engages the top of the billet and further downward movement of the punch results in the billet being extruded backwardly over the nose portion so as to assume the shell-like shape indicated by reference numeral 23 in the drawing.
  • each aperture 22 has a width which is greater than the diameter of the ring 21 thereby enabling said ring to be inserted into or removed from said aperture in a sideways direction.
  • Apparatus for use in forming shells from billets which comprises a punch adapted to be connected to a press ram and having a billet-engaging nose portion at its leading end, there being also provided a billet supporting assembly and a nose portion supporting ring, said billet supporting assembly comprising a housing adapted to be mounted on the bed of a press and having at its upper end an aperture through which said nose portion of the punch can pass, said housing having a hollow interior in which is supported a billet block having a recess adapted to receive a billet, the housing having above said billet block a pair of laterally directed and oppositely disposed apertures through which access can be gained to the interior of the housing, the diameter of said nose portion of the punch being less than the diameter of said recess in the billet block whereby a billet placed in the recess will be extruded backwardly around said nose portion as the latter is advanced into the recess on movement of the press ram towards the press bed, said ring serving to support the nose portion during the initial stages at least of said billet ex

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US845253A 1968-08-01 1969-07-28 Apparatus for use in forming shells from billets Expired - Lifetime US3651681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36717/68A GB1207407A (en) 1968-08-01 1968-08-01 Apparatus for use in forming shells from billets

Publications (1)

Publication Number Publication Date
US3651681A true US3651681A (en) 1972-03-28

Family

ID=10390622

Family Applications (1)

Application Number Title Priority Date Filing Date
US845253A Expired - Lifetime US3651681A (en) 1968-08-01 1969-07-28 Apparatus for use in forming shells from billets

Country Status (5)

Country Link
US (1) US3651681A (de)
AT (1) AT290261B (de)
DE (2) DE6930247U (de)
FR (1) FR2014862A1 (de)
GB (1) GB1207407A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302124A (zh) * 2013-04-27 2013-09-18 太原科技大学 一种带安全保护的热反挤压冲头装置
CN103639227A (zh) * 2013-12-09 2014-03-19 哈尔滨工业大学 一种制造超薄壁微小圆筒件的模具与方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1155833B (it) * 1978-02-17 1987-01-28 Its Italtractor Sud Spa Procedimento perfezionato per l'estrusione a freddo di boccole metalliche in particolare per cingoli di trattori o simili ed attrezzatura per l'attuazione del procedimento
RU2252093C2 (ru) * 2002-12-15 2005-05-20 ГОУ Уральский государственный технический университет- УПИ Устройство для обратного прессования толстостенных труб

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1082200A (en) * 1910-01-04 1913-12-23 Rheinische Metallw & Maschf Manufacture of hollow bodies.
US3263468A (en) * 1965-04-21 1966-08-02 Anaconda American Brass Co Method and apparatus for extrusion of tubes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1082200A (en) * 1910-01-04 1913-12-23 Rheinische Metallw & Maschf Manufacture of hollow bodies.
US3263468A (en) * 1965-04-21 1966-08-02 Anaconda American Brass Co Method and apparatus for extrusion of tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302124A (zh) * 2013-04-27 2013-09-18 太原科技大学 一种带安全保护的热反挤压冲头装置
CN103302124B (zh) * 2013-04-27 2015-08-19 太原科技大学 一种带安全保护的热反挤压冲头装置
CN103639227A (zh) * 2013-12-09 2014-03-19 哈尔滨工业大学 一种制造超薄壁微小圆筒件的模具与方法
CN103639227B (zh) * 2013-12-09 2016-03-09 哈尔滨工业大学 一种制造超薄壁微小圆筒件的模具与方法

Also Published As

Publication number Publication date
AT290261B (de) 1971-05-25
DE6930247U (de) 1973-09-06
GB1207407A (en) 1970-09-30
DE1938866A1 (de) 1970-07-23
FR2014862A1 (de) 1970-04-24

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