US3871201A - Continuous hydrostatic extrusion-drawing apparatus - Google Patents

Continuous hydrostatic extrusion-drawing apparatus Download PDF

Info

Publication number
US3871201A
US3871201A US425650A US42565073A US3871201A US 3871201 A US3871201 A US 3871201A US 425650 A US425650 A US 425650A US 42565073 A US42565073 A US 42565073A US 3871201 A US3871201 A US 3871201A
Authority
US
United States
Prior art keywords
wire
die
named
effective diameter
pulling
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
US425650A
Other languages
English (en)
Inventor
Makoto Hayashi
Masanori Hinata
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Application granted granted Critical
Publication of US3871201A publication Critical patent/US3871201A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21C23/007—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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing

Definitions

  • the present apparatus further comprises a first die disposed at the inlet of said wire passage and formed with a bore having an effective diameter, which is smaller than that of a fed wire, a second die disposed at the outlet of said wire passage and formed with a bore having an effective diameter, which is smaller than that of the first-named die, pulling means disposed midway of said wire passage for continuously pulling the fed wire through the firstnamed die to such an extent as to overcome the back tension, which is exerted on the passing wire due to the difference in the effective diameter between the firstand second-named dies, and take-up means disposed outside of said main body housing for continuously pulling the once-pulled wire through the secondnamed die in synchronism with said pulling means to such an extent as to afford a predetermined front tension to said once-pulled wire and for concurrently taking up the twice-pulled wire thereon.
  • the present apparatus can be appreciated not only in its capability of accomplishing continuous extrusion-drawing of a wire at a high reduction ratio but also in the resultant elongation of life time of the dies used.
  • the apparatus can also be appreciated in its simplicity of handling and construction.
  • the present invention relates to an extrusion-drawing apparatus, and, more particularly, to a continuous hydrostatic extrusion-drawing apparatus comprising a main body housing defining a wire passage, in which a working fluid under pressure is confined and through which a wire is made to continuously pass for extrusion and drawal at a high reduction ratio.
  • a hydrostatic extrusion method in which a wire is extruded through a die under a high pressure built up around the wire by a pressurized working fluid.
  • This method is characterized by the formation of a lubrication film of the working fluid between the die and the wire, so that it can be appreciated in considerable elongation of the die life time and in the desired high reduction ratio.
  • a primary object of the present invention to provide a continuous hydrostatic extrusiondrawing apparatus, in which the afore-mentioned drawbacks concomitant with the prior art apparatus are eliminated and in which a wire continuously fed from the outside can be subjected to the hydrostatic extrusion at a high reduction ratio under a front tension weaker than the yield strength of the wire.
  • Another object of the present invention is to provide a continuous hydrostatic extrusion-drawing apparatus of the above type, in which the wire can be continuously supplied by such a capstan or the like, as is rotated in a high pressure container, against such a back tension as is exerted on the fed wire due to the pressure difference between the inner side and the outer side of the container.
  • Still another object is to provide a continuous hydrostatic extrusion-drawing apparatus of the above type, in which a lubrication film is formedof the pressurized working fluid between the wire and the dies to thereby lengthen the life time of the dies.
  • a further object is to provide a continuous hydrostatic extrusion-drawing apparatus of the above type, which enjoys an enhanced working ratio and simplicity of handling and construction.
  • a continuous hydrostatic extrusion-drawing apparatus which comprises a main body housing defining therein a wire passage, in which a working fluid under pressure is confined and through which a wire to be extruded and drawn is made to pass, a first die disposed at the inlet of said 'wire passage and formed with a bore having an effective diameter which is smaller than that of a fed wire, a second die disposed at the outlet of said wire passage and formed with a bore having an effective diameter which is smaller than that of the first-named die, pulling means disposed midway of said wire passage for continuously pulling the fed wire through the first-named die to such an extent as to overcome the back tension which is exerted on the passing wire due to the difference in the effective diameter between the firstand second-named die, and take-up means disposed outside of said main body housing for continuously pulling the once-pulled wire through the second-named die in synchronism with said pulling means to such an extent as to afford a predetermined front tension
  • Indicated at reference numerals 8 and 8' are halves of a main body housing, between which a capstan room A having a larger space than a capstan l is formed.
  • a piping room B is also formed in between, which has its axis arranged in the tangential direction with the periphery of the capstan 1.
  • These two rooms A and B constitute themselves a wire passage, through which a wire to be extruded and drawn is made to pass.
  • the housing halves 8 and 8' are fastened to each other by a suitable number of bolts 9 with the capstan 1 being equiped in the capstan room A.
  • the upper and lower ends of the housing halves 8 and 8' are also fastened to outer frames 10 and 10' by means of bolts 18.
  • a pressure conduit 6 is formed in the housing halves 8 and 8' so as to introduce a working fluid under pressure into the capstan roomA and the piping room B.
  • a sprocket wheel 14 As bettending end of the driving shaft 13 is attached a sprocket wheel 14, which is driven through a chain 17 by a sprocket wheel attached to the output shaft of an electric motor 16.
  • This electric motor 16 may preferably be of the type having its speed easily controllable, since it has to. rotate in synchronism with a suitable take-up mechanism (not shown).
  • the electric motor 16 may be dispensed with, in which case the driving shaft 13 is driven by a prime mover for the take-up mechanism through a suitable reduction gear mechanism.
  • the capstan 1 shown as a pulling mechanism is one in number, the pulling mechanism may include a plurality of similar capstans, if desired.
  • a wire 7 having a diameter slightly larger than an effective diameter of the inlet die 2 is drawn through the die stopper 4 by the die 2 into a wire portion 7', which is shaped to have the same diameter as that of the inlet die 2.
  • the wire portion 7' thus shaped is then pulled by and wound on the capstan 1 at least once to be drawn to the outside through the outlet die 3 and the die stopper 5.
  • the effective diameter of the oultet die 3 is made considerably smaller than the once-pulled wire portion 7', and accordingly that its reduction ratio a is much higher than the reduction ratio B from the wire 7 to the wire portion 7'.
  • the back tension F is directed toward the inlet side, and is expressed by a product of the pressure P of the working fluid and the difference between the effective areas S and S of the two dies 2 and 3, namely, by a formula F P (S S
  • this back tension F can be overcome by the pulling force of the capstan 1 which is driven by the electric motor 16 through the sprocket wheel 15, the chain 17, the sprocket wheel 14 and the driving shaft 13.
  • a predetermined front tension can be afforded to a wire portion 7" by a suitable take-up mechanism such as a spool, so that the wire can be subjected tothe continuous extrusion-drawing at the high reduction ratio a.
  • a continuous hydrostatic extrusion-drawing apparatus is characterized by the provision of a main body housing defining therein a wire passage, in which a working fluid under pressure is confined and through which a wire to be extruded and drawn is made to pass, of a first die disposed at the inlet of said wire passage and formed with a bore having an effective diameter which is smaller than that of a fed wire, of a second die disposed at the outlet of said wire passage and formed with a bore having an effective diameter which is smaller than of the first-named die, of pulling means disposed midway of said wire passage for continuously pulling the fed wire through the first-named die to such an extent as to overcome the back tension which is exerted on the passing wire due to the difference in the effective diameter between the firstand secondnamed dies, and of take-up means disposed outside of said main body housing for continuously pulling the once-pulled wire through the second-named die in synchronism with said pulling means to such an extent as to afford
  • the present apparatus should be appreciated not only in its capability of accomplishing continuous extrusion-drawing of a wire at a high reduction ratio but also in the resultant elongation of life time of the dies used.
  • the apparatus should also be appreciated in its simplicity of handling and construction, with the resultantly enhanced working ratio.
  • the apparatus should further be appreciated in its augmented reduction ratio for one die, and this feature is the most prominent where it is applied to extrusion-drawing of a composite wire. From these reasonings, it will be understood that the present apparatus can find a wide variety of industrial applications.
  • a continuous hydrostatic extrusion-drawing apparatus comprising:
  • a main body housing defining therein a wire passage, in which a working fluid under pressure is confined and through which a wire to be extruded and drawn is made to pass;
  • a first die disposed at the inlet of said wire passage and formed with a bore having an effective diameter which is smaller than that of a fed wire;
  • a second die disposed at the outlet of said wire passage and formed with a bore having an effective diameter which is smaller than that of the first-named die
  • take-up means disposed outside of said main body housing for continuously pulling the once-pulled wire through the second-named die in synchronism determined level.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
US425650A 1972-12-16 1973-12-17 Continuous hydrostatic extrusion-drawing apparatus Expired - Lifetime US3871201A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47126590A JPS518868B2 (cs) 1972-12-16 1972-12-16

Publications (1)

Publication Number Publication Date
US3871201A true US3871201A (en) 1975-03-18

Family

ID=14938933

Family Applications (1)

Application Number Title Priority Date Filing Date
US425650A Expired - Lifetime US3871201A (en) 1972-12-16 1973-12-17 Continuous hydrostatic extrusion-drawing apparatus

Country Status (5)

Country Link
US (1) US3871201A (cs)
JP (1) JPS518868B2 (cs)
DE (1) DE2362232A1 (cs)
FR (1) FR2210450B1 (cs)
GB (1) GB1447652A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005596A (en) * 1975-04-07 1977-02-01 Ural Viktor Ivanovich Apparatus for hydraulic pressing of metals
US6571593B1 (en) * 2000-01-28 2003-06-03 Korea Institute Of Science & Technology Continuous shear deformation device
CN106734303A (zh) * 2016-12-02 2017-05-31 中铁建电气化局集团康远新材料有限公司 双直角通道连续挤压装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168286U (ja) * 1983-04-27 1984-11-10 高橋　俊子 小さな洗濯板のついた洗濯機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524509A (en) * 1894-08-14 James robertson
US3328998A (en) * 1964-12-17 1967-07-04 Battelle Development Corp High-reduction drawing
US3740985A (en) * 1971-11-17 1973-06-26 Western Electric Co Apparatus and method for continuous extrusion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524509A (en) * 1894-08-14 James robertson
US3328998A (en) * 1964-12-17 1967-07-04 Battelle Development Corp High-reduction drawing
US3740985A (en) * 1971-11-17 1973-06-26 Western Electric Co Apparatus and method for continuous extrusion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005596A (en) * 1975-04-07 1977-02-01 Ural Viktor Ivanovich Apparatus for hydraulic pressing of metals
US6571593B1 (en) * 2000-01-28 2003-06-03 Korea Institute Of Science & Technology Continuous shear deformation device
CN106734303A (zh) * 2016-12-02 2017-05-31 中铁建电气化局集团康远新材料有限公司 双直角通道连续挤压装置

Also Published As

Publication number Publication date
FR2210450A1 (cs) 1974-07-12
GB1447652A (en) 1976-08-25
JPS4982557A (cs) 1974-08-08
FR2210450B1 (cs) 1978-02-10
DE2362232A1 (de) 1974-06-27
JPS518868B2 (cs) 1976-03-22

Similar Documents

Publication Publication Date Title
US3942309A (en) Method of and apparatus for making wire strand
US3871201A (en) Continuous hydrostatic extrusion-drawing apparatus
US4473995A (en) Concentric compressed double twist stranded cable
US4641492A (en) Rope-twisting machine for making ropes
US3388541A (en) Method and apparatus for stranding wires, or the like
US4302924A (en) Wire stranding apparatus
US4328664A (en) Apparatus for the SZ-twisting of stranding elements of electric or optical cables and lines
US3841129A (en) Continuous, hydrostatic extrusion process and an apparatus using the same
US2457402A (en) Wire-stranding machine
US2526247A (en) Method and apparatus for producing wire strand or rope
US3138914A (en) Wire closing machine
US3388543A (en) Manufacture of wire strands
US3397721A (en) Tension control apparatus
GB1090210A (en) Method for the manufacture of strands from films of alkylene polymers
US3094833A (en) Multi-strand cable fabricating apparatus and method
US4735071A (en) Apparatus for continuously producing tube having helical grooves in its inner surface
CN115762910B (zh) 一种框绞机旋转模装置
US2524439A (en) Method and apparatus for treating wire products
US3286451A (en) Strander
JP3576321B2 (ja) ゴム製品補強用スチールワイヤの波付け加工装置
JP2592363B2 (ja) 高圧縮撚線導体の製造方法及びその装置
US3568288A (en) Apparatus and method for making finned tubing
KR20010076655A (ko) 스파이럴 케이블의 제조방법 및 그 장치
US3823543A (en) Method of making spun multi-wire articles
US3670588A (en) Wire drawing