US3410084A - Method of forming chain link plates - Google Patents

Method of forming chain link plates Download PDF

Info

Publication number
US3410084A
US3410084A US545121A US54512166A US3410084A US 3410084 A US3410084 A US 3410084A US 545121 A US545121 A US 545121A US 54512166 A US54512166 A US 54512166A US 3410084 A US3410084 A US 3410084A
Authority
US
United States
Prior art keywords
forming
link plates
chain
link
station
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
US545121A
Inventor
Robert L Cain
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.)
Amsted Industries Inc
Original Assignee
Amsted Industries 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 Amsted Industries Inc filed Critical Amsted Industries Inc
Priority to US545121A priority Critical patent/US3410084A/en
Application granted granted Critical
Publication of US3410084A publication Critical patent/US3410084A/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
    • B21L—MAKING METAL CHAINS
    • B21L9/00—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains
    • B21L9/02—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains of roller-chain or other plate-link type
    • B21L9/04—Punching or bending the different parts of the chain links

Definitions

  • ABSTRACT OF THE DISCLOSURE A method of progressively forming wire stock into chain link plates by forming at a first station, opposed locating grooves to divide the wire into sections, and wherein each section is further formed with narrow medial portions. At a second station the sections are flattened and circular cavities are formed therein. Work at the first and second stations is carried out while in a molten lead bath. The sections are quenched in oil, and at a third station the circular cavities are punched to form pin holes. The sections are separated at a forth station into individual link plates.
  • This invention relates to a method of forming chain link plates for use in the manufacture of link chain for power transmission and conveying systems.
  • the present invention comprises a method in which wire stock is moved step-by-step through several forming dies to form a chain of connected link plates having pin holes therein, the link plates being successively separated from the chain of link plates at the completion of the forming operations.
  • the wire may be cold formed to provide a chain of connected link plates, it is contemplated that the wire may be formed in a heated condition to improve the physical properties of the link plates.
  • FIGURE 1 is a schematic plan view illustrating the apparatus for progressively forming wire stock to provide a chain of link plates which are successively severed from the chain at the completion of the forming operations.
  • FIGURE 2 is a side elevation of the apparatus shown in FIGURE 1.
  • FIGURE 3 is an enlarged fragmentary view illustrating the first work forming station.
  • FIGURE 4 is an enlarged view illustrating the second work forming station.
  • FIGURE 5 is an enarged section showing the third work forming station.
  • FIGURE 6 is an enlarged detail view showing the shearing station.
  • the apparatus for transforming chain link plates from S.A.E. 4340 alloy steel round wire stock 2 is shown as comprising a furnace 3 in which the wire stock is heated to a temperature of 1550 F. and then withdrawn from the furnace into a tank 4 containing ice molten lead maintained at a temperature of up to approximately 1000 F.
  • the wire stock is moved step-by-step within the lead bath tank 4 to a first forming station 6 and then to a second forming station 7 by means of a conventional stock feed mechanism 8 actuated by a hydraulic power cylinder 9.
  • the first forming station 6 comprises a forming anvil 11 and opposing forming punches 12 and 13 actuated by hydraulic cylinders 14 and 16 to compress a section 17 of the Wire therebetween to form a section having end portions 18 and a relatively narrow medial portion 19, as viewed in FIGURE 3.
  • Locating grooves 21 are formed in opposite sides of the wire stock by the forming punches 12 and 13 to receive locator members 2222 carried by the punches.
  • the chain of connected link plate sections 17 moves step-by-step from the first station 6 to the second station 7 where they are successively flattened between a mashing punch 23 and the anvil 11 and formed with circular cavities 24, each section being accurately located under the punch 24 by reciprocable locators 26 actuated by hydraulic cylinders 27.
  • the chain of connected sections 17 moves from the lead bath tank 4 into a quenching tank 28 filled with parafiin oil at a temperature of approximately F.
  • the chain of connected link plate sections 17 then moves through a third station 30 comprising a pin hole punch 29 and a die 31 adapted to punch two pin holes 32 in each section, each section being held in fixed position during the punching operation by means of opposing locators 33 actuated by hydraulic cylinders 34 for engagement in the locating grooves 21.
  • the chain of connected link plate sections 17 moves step-by-step into a reciprocable shear device 36 where the sections 17 are successively separated from the chain of link sections to complete the formation of finished link plates 37 which then pass through a degreasing device 38.
  • wire 2 may be formed in a cold condition while passing through the several forming stations.
  • the method of progressively forming wire stock to fabricate chain link plates which comprises forming notches at spaced intervals in opposite sides of the wire stock to provide a chain of connected link sections, compressing each link section to provide large end portions connected by a relatively narrow medial portion, mashing each link section to provide flat parallel top and bottom surfaces thereon, punching pin holes in said enlarged end portions, and successively shearing each link section from the chain of link sections, the wire stock being maintained in a molten lead bath at a temperature up to approximately 1000 F. during formation of the chain of link sections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
  • Punching Or Piercing (AREA)

Description

Nov. 12, 1968 R. CAIN METHOD OF FORMING CHAIN LINK PLATES Filed April 25, 1966 2 Sheets-Sheet 1 R. L. CAIN Nov. 12,1968
METHOD OF FORMING CHAIN LINK PLATES 2 Sheets-Sheet 2 Filed April 25, 1966 i A r l l i M hz/eniorx 1 0K211; l. Cm'n/ United States Patent O 3,410,084 METHOD OF FORMING CHAIN LINK PLATES Robert L. Cain, West Lafayette, Ind., assignor to Amsted Industries Incorporated, Chicago, Ill., a corporation of New Jersey Filed Apr. 25, 1966, Ser. No. 545,121 Claims. (Cl. 59-8) ABSTRACT OF THE DISCLOSURE A method of progressively forming wire stock into chain link plates by forming at a first station, opposed locating grooves to divide the wire into sections, and wherein each section is further formed with narrow medial portions. At a second station the sections are flattened and circular cavities are formed therein. Work at the first and second stations is carried out while in a molten lead bath. The sections are quenched in oil, and at a third station the circular cavities are punched to form pin holes. The sections are separated at a forth station into individual link plates.
This invention relates to a method of forming chain link plates for use in the manufacture of link chain for power transmission and conveying systems.
Heretofore, it has been the practice to punch chain link plates from a metal strip and then to harden the links by special heat treatment and finishing methods. As this method results in a scrap loss of approximately 30 percent, it is an object of the present invention to provide a method for forming chain link plates in which the scrap loss is reduced to approximately one or two percent.
Briefly, the present invention comprises a method in which wire stock is moved step-by-step through several forming dies to form a chain of connected link plates having pin holes therein, the link plates being successively separated from the chain of link plates at the completion of the forming operations. While the wire may be cold formed to provide a chain of connected link plates, it is contemplated that the wire may be formed in a heated condition to improve the physical properties of the link plates.
The invention embodies other novel features which are hereinafter set forth in the specification and claims and illustrated in the accompanying drawings, forming part thereof, wherein:
FIGURE 1 is a schematic plan view illustrating the apparatus for progressively forming wire stock to provide a chain of link plates which are successively severed from the chain at the completion of the forming operations.
FIGURE 2 is a side elevation of the apparatus shown in FIGURE 1.
FIGURE 3 is an enlarged fragmentary view illustrating the first work forming station.
FIGURE 4 is an enlarged view illustrating the second work forming station.
FIGURE 5 is an enarged section showing the third work forming station.
FIGURE 6 is an enlarged detail view showing the shearing station.
Referring now to the drawings for a better understanding of the invention, the apparatus for transforming chain link plates from S.A.E. 4340 alloy steel round wire stock 2 is shown as comprising a furnace 3 in which the wire stock is heated to a temperature of 1550 F. and then withdrawn from the furnace into a tank 4 containing ice molten lead maintained at a temperature of up to approximately 1000 F.
The wire stock is moved step-by-step within the lead bath tank 4 to a first forming station 6 and then to a second forming station 7 by means of a conventional stock feed mechanism 8 actuated by a hydraulic power cylinder 9. The first forming station 6 comprises a forming anvil 11 and opposing forming punches 12 and 13 actuated by hydraulic cylinders 14 and 16 to compress a section 17 of the Wire therebetween to form a section having end portions 18 and a relatively narrow medial portion 19, as viewed in FIGURE 3. Locating grooves 21 are formed in opposite sides of the wire stock by the forming punches 12 and 13 to receive locator members 2222 carried by the punches.
The chain of connected link plate sections 17 moves step-by-step from the first station 6 to the second station 7 where they are successively flattened between a mashing punch 23 and the anvil 11 and formed with circular cavities 24, each section being accurately located under the punch 24 by reciprocable locators 26 actuated by hydraulic cylinders 27.
The chain of connected sections 17 moves from the lead bath tank 4 into a quenching tank 28 filled with parafiin oil at a temperature of approximately F. The chain of connected link plate sections 17 then moves through a third station 30 comprising a pin hole punch 29 and a die 31 adapted to punch two pin holes 32 in each section, each section being held in fixed position during the punching operation by means of opposing locators 33 actuated by hydraulic cylinders 34 for engagement in the locating grooves 21.
After the hole punching operation, the chain of connected link plate sections 17 moves step-by-step into a reciprocable shear device 36 where the sections 17 are successively separated from the chain of link sections to complete the formation of finished link plates 37 which then pass through a degreasing device 38.
While a hotworking process for forming link plates has been shown and described, it will be understood that the wire 2 may be formed in a cold condition while passing through the several forming stations.
I claim:
1. The method of progressively forming wire stock to fabricate chain link plates, which comprises forming notches at spaced intervals in opposite sides of the wire stock to provide a chain of connected link sections, compressing each link section to provide large end portions connected by a relatively narrow medial portion, mashing each link section to provide flat parallel top and bottom surfaces thereon, punching pin holes in said enlarged end portions, and successively shearing each link section from the chain of link sections, the wire stock being maintained in a molten lead bath at a temperature up to approximately 1000 F. during formation of the chain of link sections.
2. A method according to claim 1 in which the wire stock is quenched in a tank of liquid maintained at a temperature of approximately 120 F.
3. A method according to claim 2 in which the pin holes are punched in the link sections after the quenching operation.
4. A method according to claim 1 wherein the wire stock is moved through the molten bath and thence through liquid parafiin oil at a temperature of the order of 120 F.
5. A method according to claim 4 wherein the pin holes u 3,410,031 I; g
ar punched in the link sect QQ after'they have passed- 1 V FQRE N W out of contact w1th the paraflin 011. 859,387 1/ 1961 Great Britai Referen C d UNITED STATES PATENTS 5 RLES W. LANHAM, Primary Examiner.
1,670,758 5/1928 Witherow 5935 G. P. "CROSBY, Assistant Examiner. 1,881,631 10/1932 Jewett 59-35
US545121A 1966-04-25 1966-04-25 Method of forming chain link plates Expired - Lifetime US3410084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US545121A US3410084A (en) 1966-04-25 1966-04-25 Method of forming chain link plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545121A US3410084A (en) 1966-04-25 1966-04-25 Method of forming chain link plates

Publications (1)

Publication Number Publication Date
US3410084A true US3410084A (en) 1968-11-12

Family

ID=24174967

Family Applications (1)

Application Number Title Priority Date Filing Date
US545121A Expired - Lifetime US3410084A (en) 1966-04-25 1966-04-25 Method of forming chain link plates

Country Status (1)

Country Link
US (1) US3410084A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595011A (en) * 1969-08-12 1971-07-27 Jeffrey Galion Inc Method of forming chain side bars with curved bearing surfaces
US20100167080A1 (en) * 2007-05-25 2010-07-01 Jerome Carson Smith Integrated Die Trim And Method
US20120090290A1 (en) * 2007-02-01 2012-04-19 Jtekt Corporation Power transmission chain pin and manufacture method thereof
US20140260875A1 (en) * 2013-03-14 2014-09-18 Blount, Inc. Formed wire tie strap with integrated rivet for a saw chain

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670758A (en) * 1923-08-01 1928-05-22 Colonial Trust Co Method of making ring-gear blanks
US1881631A (en) * 1930-04-09 1932-10-11 Chain Belt Co High speed chain and method of making same
GB859387A (en) * 1957-12-10 1961-01-25 Renold Chains Ltd Improvements in or relating to chains

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670758A (en) * 1923-08-01 1928-05-22 Colonial Trust Co Method of making ring-gear blanks
US1881631A (en) * 1930-04-09 1932-10-11 Chain Belt Co High speed chain and method of making same
GB859387A (en) * 1957-12-10 1961-01-25 Renold Chains Ltd Improvements in or relating to chains

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595011A (en) * 1969-08-12 1971-07-27 Jeffrey Galion Inc Method of forming chain side bars with curved bearing surfaces
US20120090290A1 (en) * 2007-02-01 2012-04-19 Jtekt Corporation Power transmission chain pin and manufacture method thereof
US9308575B2 (en) * 2007-02-01 2016-04-12 Jtekt Corporation Power transmission chain pin and manufacture method thereof
US20100167080A1 (en) * 2007-05-25 2010-07-01 Jerome Carson Smith Integrated Die Trim And Method
US8919169B2 (en) 2007-05-25 2014-12-30 Magna International Inc. Integrated die trim and method
US20140260875A1 (en) * 2013-03-14 2014-09-18 Blount, Inc. Formed wire tie strap with integrated rivet for a saw chain
US9757808B2 (en) * 2013-03-14 2017-09-12 Blount, Inc. Formed wire tie strap with integrated rivet for a saw chain

Similar Documents

Publication Publication Date Title
US4310939A (en) Method of producing semicircular washers having a projection to prevent rotation
DE2954233C2 (en)
US3867832A (en) Method of forging of various shaped elements on elongated bars and a device for the use of this method
US2697953A (en) Dimpling
EP3639945A1 (en) Method for producing a three-dimensional shaped flat conductor from a round metal wire
CA1139742A (en) Method of forming integral flanges in a sheet, the product thereof and the apparatus
US3410084A (en) Method of forming chain link plates
US3406555A (en) Cold forming of articles
US3595011A (en) Method of forming chain side bars with curved bearing surfaces
RU2492952C1 (en) Method of making tees (versions)
US2366487A (en) Stamping and forming
US3298081A (en) Method of and apparatus for cold working and expanding a metal member such as a channel stud
US2393155A (en) Forging pointed articles
US910684A (en) Method of transforming scrap-pipe into flat metal.
US1881631A (en) High speed chain and method of making same
JPH0431774B2 (en)
US2749610A (en) Method and machine for making shackles
US2596734A (en) Rail clip forming machine
US1683011A (en) Process for forging
US1498824A (en) Apparatus for making railway sleepers
US2051640A (en) Method of manufacturing tie plates
CN112207219B (en) Production and manufacturing method for hot forging inner hole of metal piece
GB2080403A (en) Method of making a hinge flap
SU1082513A1 (en) Method of manufacturing tee-joint from tube billets
US4399196A (en) Integral flanges in a sheet