GB1400874A - Methods of and apparatus for forming elongated products from elongated workpieces - Google Patents

Methods of and apparatus for forming elongated products from elongated workpieces

Info

Publication number
GB1400874A
GB1400874A GB5317872A GB5317872A GB1400874A GB 1400874 A GB1400874 A GB 1400874A GB 5317872 A GB5317872 A GB 5317872A GB 5317872 A GB5317872 A GB 5317872A GB 1400874 A GB1400874 A GB 1400874A
Authority
GB
United Kingdom
Prior art keywords
jaws
workpiece
die
coating
pinions
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
GB5317872A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1400874A publication Critical patent/GB1400874A/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
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
    • 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
    • B21C23/005—Continuous extrusion starting from solid state material
    • 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
    • B21C23/007—Hydrostatic extrusion
    • B21C23/008—Continuous extrusion
    • 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
    • B21C23/211—Press driving devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)
  • Coating Apparatus (AREA)

Abstract

1400874 Extruding; drawing WESTERN ELECTRIC CO Inc 17 Nov 1972 [17 Nov 1971] 53178/72 Heading B3P An apparatus for the continuous extrusion of an elongated workpiece 2 through a die 12, Fig. 10, comprises sets of segmented gripping jaws 4 which move in endless paths 6 and co-operate on the innermost part of their paths to feed the workpiece to the die and effect the extrusion. The workpiece 2 is coated with a shear transmitting medium such as beeswax or polyethylene wax in two chambers 82, 83, Fig. 4, before reaching the feeding jaws. A sizing die 73 is provided between the chambers and a wiper 79 removes dirt from the workpiece before coating and a wiper 71 determines the thickness of the coating. The coating acts as a lubricant for both the sizing die and the extrusion die and is progressively pressurized by the jaws to beyond the yield strength of the workpiece. The gripping jaws are moved in the feed direction by staggered pinions 5a-5d, 25a- 25d, Fig. 5, which engage teeth on the outside of the jaws. The pinions are housed in a gear block 14 provided with gears trains and fluid driven motors for the pinions, Fig. 3 (not shown). The gear block 14 has a bore 16 to guide the jaws aligned with the bore of a pressure cylinder 11 and the bore of a further gear block 15 downstream of the extrusion die. The gear block 15 also has pinions 27a-27d engaged with the jaws but these pinions drive fluid pumps so that the jaw feed is retarded by the pinions to keep the jaws closely adjacent. The pressure cylinder 11 is internally lined by a sleeve (34), Fig. 8 (not shown), and a segmented sleeve (38a)-(38d), Fig. 9 (not shown). The segments define bores 40 for electrical heaters and supports guiding bars (42) for the jaws. The jaws are urged inwards by fluid pressure to sets of chambers (52a)-(52d), behind the jaws to pressurize the shear transmitting medium. A set of pressure reducing valves (53a)-(53d), (54a)-(54d), (55a)-(55d), Fig. 8 (not shown), ensure that the pressure in the sets chambers behind the jaws is progressively greater in the workpiece feed direction. The jaws are guided in the curved and straight return paths 7, 8, Fig. 5, by segment cross-section passages in guide blocks, Figs. 6 and 7 (not shown). In operation the jaws 4 closely contact the entire perimetric surface of a length of shear transmitting medium coating on the workpiece 2. The feed of the jaws provide a motive force along the surface of the coating and thereby produce a shear force in the coating medium which is applied as viscous drag to propel the workpiece to the die. The viscous drag produces axial compressive stress in the workpiece. The coating medium cannot escape between the jaws and must pass through the extrusion die. The medium accumulates at the entrance of the die and produces normal compressive stress in the workpiece upstream of the die. The difference between the axial and normal stress is arranged to not exceed the yield strength of the workpiece which may be copper or aluminium.
GB5317872A 1971-11-17 1972-11-17 Methods of and apparatus for forming elongated products from elongated workpieces Expired GB1400874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19954271A 1971-11-17 1971-11-17

Publications (1)

Publication Number Publication Date
GB1400874A true GB1400874A (en) 1975-07-16

Family

ID=22737973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5317872A Expired GB1400874A (en) 1971-11-17 1972-11-17 Methods of and apparatus for forming elongated products from elongated workpieces

Country Status (16)

Country Link
US (1) US3740985A (en)
JP (2) JPS5324902B2 (en)
BE (1) BE790903A (en)
CA (1) CA996502A (en)
CH (1) CH570849A5 (en)
CS (1) CS212735B2 (en)
DE (1) DE2255866C3 (en)
ES (1) ES408935A1 (en)
FR (1) FR2160413B1 (en)
GB (1) GB1400874A (en)
HU (1) HU175863B (en)
IT (1) IT975747B (en)
NL (1) NL158405B (en)
SE (1) SE404882B (en)
SU (1) SU793361A3 (en)
ZA (1) ZA728125B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518868B2 (en) * 1972-12-16 1976-03-22
US3922898A (en) * 1974-03-29 1975-12-02 Wanskuck Co Extrusion process
US3911705A (en) * 1974-04-01 1975-10-14 Wanskuck Co Extrusion apparatus
US3924429A (en) * 1974-11-13 1975-12-09 Western Electric Co Method and apparatus for reducing extrusion start-up pressure
US4027511A (en) * 1974-11-13 1977-06-07 Western Electric Company, Inc. Apparatus for producing multiple elongated products such as wires
US3948079A (en) * 1974-11-13 1976-04-06 Western Electric Company, Inc. Multiple aperture die
US3964283A (en) * 1974-11-13 1976-06-22 Western Electric Company, Inc. Production of multiple elongated products such as wire
US3916669A (en) * 1974-11-13 1975-11-04 Western Electric Co Multiple aperture die
US3901065A (en) * 1974-11-13 1975-08-26 Western Electric Co Multiple aperture die
US4005596A (en) * 1975-04-07 1977-02-01 Ural Viktor Ivanovich Apparatus for hydraulic pressing of metals
US3985011A (en) * 1975-09-12 1976-10-12 Western Electric Company, Inc. Continuous extrusion
FR2334435A1 (en) * 1975-12-12 1977-07-08 Trefimetaux CONTINUOUS EXTRUSION DEVICE
US4094178A (en) * 1976-03-08 1978-06-13 Western Electric Co., Inc. Methods for continuous extrusion
US4051705A (en) * 1976-06-24 1977-10-04 Western Electric Co. Die stem heating
US4163377A (en) * 1976-11-10 1979-08-07 Trefimetaux Continuous hydrostatic extrusion process and apparatus
US4177658A (en) * 1978-06-08 1979-12-11 Western Electric Co., Inc. Methods and apparatus for continuous extrusion
US4319476A (en) * 1978-07-19 1982-03-16 Western Electric Company, Incorporated Methods and apparatus for extrusion
US4262513A (en) * 1978-10-27 1981-04-21 Bicc Limited Continuous extrusion of metals
US4283931A (en) * 1978-10-27 1981-08-18 Bicc Limited Continuous extrusion of metals
USRE33501E (en) * 1985-05-13 1990-12-25 National Rolling Mills, Inc. Fire-rated beam with expansion relief section
US5327756A (en) * 1991-12-31 1994-07-12 Fox Francis J Method and apparatus for forming spiral grooves internally in metal tubing
DE4402673A1 (en) * 1994-01-29 1995-08-03 Huber & Bauer Gmbh Device for hydroforming
CN112453083B (en) * 2020-11-02 2022-09-06 河北浩发腾达管道制造有限公司 Steel pipe autoloading draws extension apparatus for producing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103309A (en) * 1963-09-10 englund
US1321729A (en) * 1919-05-15 1919-11-11 Simmons Co Tube-drawing apparatus.
GB1177223A (en) * 1966-02-04 1970-01-07 Atomic Energy Authority Uk Improvements in Hydrostatic Extrusion Apparatus
US3440849A (en) * 1966-05-13 1969-04-29 Atomic Energy Authority Uk Hydrostatic extrusion apparatus
DE2003356A1 (en) * 1969-01-28 1970-09-24 Western Electric Co Method and device for the motion drive of a workpiece

Also Published As

Publication number Publication date
HU175863B (en) 1980-10-28
JPS52107257A (en) 1977-09-08
DE2255866C3 (en) 1981-03-12
FR2160413A1 (en) 1973-06-29
FR2160413B1 (en) 1976-04-23
SE404882B (en) 1978-11-06
US3740985A (en) 1973-06-26
ES408935A1 (en) 1976-04-01
SU793361A3 (en) 1980-12-30
JPS4862655A (en) 1973-09-01
BE790903A (en) 1973-03-01
CH570849A5 (en) 1975-12-31
NL158405B (en) 1978-11-15
CS212735B2 (en) 1982-03-26
JPS5324902B2 (en) 1978-07-24
CA996502A (en) 1976-09-07
DE2255866A1 (en) 1973-05-24
IT975747B (en) 1974-08-10
NL7215346A (en) 1973-05-21
DE2255866B2 (en) 1980-07-17
ZA728125B (en) 1973-07-25
AU4885072A (en) 1974-05-16

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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