US3780606A - Hot log shear - Google Patents

Hot log shear Download PDF

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Publication number
US3780606A
US3780606A US00253623A US3780606DA US3780606A US 3780606 A US3780606 A US 3780606A US 00253623 A US00253623 A US 00253623A US 3780606D A US3780606D A US 3780606DA US 3780606 A US3780606 A US 3780606A
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US
United States
Prior art keywords
billet
log
die
carrier
dies
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
US00253623A
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English (en)
Inventor
A Jentsch
E Taylor
W Shukoff
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.)
Farrel Corp
USM Corp
Original Assignee
USM Corp
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Filing date
Publication date
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Publication of US3780606A publication Critical patent/US3780606A/en
Assigned to FARREL CORPORATION reassignment FARREL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: USM CORPORATION A CORP. OF NJ
Assigned to FOOTHILL CAPITAL CORPORATION, A CORP. OF CA reassignment FOOTHILL CAPITAL CORPORATION, A CORP. OF CA SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FARREL CORPORATION
Assigned to FARREL CORPORATION reassignment FARREL CORPORATION RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FOOTHILL CAPITAL CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D23/00—Machines or devices for shearing or cutting profiled stock
    • 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
    • B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
    • B21C29/003—Cooling or heating of work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2122—By ejector within a hollow cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2181—Active delivery means mounted on tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/404—By means to misalign aligned apertured tools
    • Y10T83/416—Rotary relative movement solely about a single pivot
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5715—With sequencing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7547—Liquid pressure actuating means

Definitions

  • the present invention relates to a billet cutting method and apparatus and more particularly to apparatus for severing hot aluminum billets from a hot log.
  • Aluminum extruders especially those which are operated in conjunction with gas-fired billet heaters, need a fast adjustable means for changing billet length just before the billet goes into the extrusion press. This is so because different dies require different billet lengths to run efficiently; and if there is a die failure for any reason, the whole length of the billet heater (generally twenty or forty feet) must be emptied of one length of precut billets to change to another length. Furthermore, for different types of extrusions different lengths of billets must be cut from the billet log to achieve the desired net length of the finished extrusions. Moreover, as extrusion dies wear, more pounds of aluminum per foot are required to achieve the desired billet length.
  • One method of cutting aluminum billets and the like to lengths suitable for extrusion comprises feeding the billet log to an adjustable stop and then cutting the desired length of billet off the log with a power-driven hack, band, or circular saw.
  • One object of the present invention is to provide an improved method of severing hot aluminum billets from a log to reduce scrap loss and to provide readily billets of the required length for the extrusion press.
  • Another object of the invention is to provide means for clamping the heated log during severing so that no damage results to the billet heater.
  • FIG. 1 is an elevational view of a log shearing ma chine built according to one embodiment of this invention, showing a general front view of the billet exit end, the shear arm, and various operating parts;
  • FIG. 2 is a side elevation of this machine
  • FIG. 3 is a rear view of the machine
  • FIG. 4 is a diagram illustrating the hydraulic circuit of the machine.
  • FIG. 5 is an electrical diagram of the machine.
  • the aluminum logs are heated to the working temperature, and then confined in the die openings of adjacent fixed and movable dies.
  • the log is then clamped; and a billet of a predetermined length is severed from the log by movement of the movable die.
  • the severed billet is pushed from the movable die; and the aluminum log is pushed back into the billet heater for reheating.
  • Prior shears have no clamping action on the logs; and billet heater damage has resulted.
  • l2 denotes a stationary frame upon which the operating components of the shear are mounted.
  • a cylinder 16 Bolted to the front face of this frame by bolts 14 is a cylinder 16 (FIGS. 1 and 3) in which a piston 18 (FIG. 4) reciprocates.
  • a ram 20 Integral with or secured to the piston 18 is a ram 20 that has a rounded head 21 which engages against an arm 23 that is mounted on the frame 12 to pivot about the shaft 25 (FIG. I).
  • the arm 23 is guided in its swinging movement about pivot 25 on an arcuate guideway 27 on which it is held by the gib 29 which is secured to the frame 12 by bolts 30.
  • the arm 23 carries an interchangeable tubular cutting die 32 that is swingable in an are relative to a stationary die 34 (FIG. 3) to effect the shearing operation.
  • a log pushback cylinder in which the piston 62 (FIGS. 2 and 4) is reciprocable.
  • the piston rod 64 of this piston has a head 66 which is adapted to enter into and through the bore 38 of the stationary die, when the arm 23 has swung far enough for the cylinder 60 to be in alignment with that bore, so that the head 66 of the piston can push the log back into the heater or furnace 68, which is directly behind the shear so that this log can be reheated.
  • a billet cradle which supports the cut billet after it has been severed from the log and has been pushed out of the pivotable die 32. This cradle also retains this die 32 in proper position in the moving arm 23.
  • a billet push cylinder 82 (FIGS. 2 and 4) has a piston 83 reciprocable in it and is mounted to the frame 12. This piston through its piston rod pushes the severed billet from the movable die 32 when the moving arm 23 has made its full arc of travel to the down position.
  • the shear arm 23 is adapted to be swung back to original position after a shearing operation by a pushback piston 40 (FIGS. 1 and 4) which is reciprocable in a cylinder 42 mounted on the base of the machine and connected by a piston rod 44 and pivot pin 46 with the arm 23.
  • a pushback piston 40 (FIGS. 1 and 4) which is reciprocable in a cylinder 42 mounted on the base of the machine and connected by a piston rod 44 and pivot pin 46 with the arm 23.
  • the two dies 32 and 34 are each interchangeable so as to permit substituting dies of proper size for each diameter or shape of billet which is to be cut by the shear.
  • the two dies shown are provided with bores 36 and 38, respectively, which are of approximately the same diameter as, and which conform to, the cross-sectional shape of the billet to be sheared. 1
  • the length of the billet, which is to be sheared, can be adjusted by hand wheel 50 which is rotatable in a guide 52 (FIGS. 1 and 2) and threads into a nut (not shown) carried by a bracket 54 that has arms 56 extending laterally from it which carry an adjustable stop 58 against which the log, from which the billets are to be severed, is adjusted.
  • Cylindrical guide bars 84 and 86 project forwardly from the cradle 70 to support the log during the billet severing operation.
  • a yoketype clamp 72 (FIGS. 2 and 4) which is actuated by a piston 73, and an anvil 77.
  • Piston '73 is reciprocable vertically in the cylinder 74 which is carried by the frame and its piston rod 76 projects through the bottom of cylinder '74 and is connected by pins 78 (FIGS. 2)
  • this clamp unit is to prevent any motion of the log inside the log heater during actual severing of the billet from the log.
  • the hot log L (FIG. 4) is first pushed by the log heater mechanism through the fixed die 34 and the movable die 32 against the adjustable billet stop 58. This trips and closes the limit switch LS 31 (FIG. closing a circuit from main line L through normally closed limit switch LS 33 and solenoid 100 to the mainline L This energizes solenoid 100, shifting valve 102 (FIG.
  • Energization of the solenoid 122 causes the valve 128 to be shifted to put duct 130 on supply from duct 112 and duct 132 on exhaust, and simultaneously with energization of solenoid 12d, valve 13d is shifted to put duct 136 on supply from line 112 through line 138, and to put the line 140 on exhaust through valve 134 and duct 142 back to the sump.
  • This causes the ram to engage the arm 23 and push it down while the piston 40 is pull ing down on this arm so that the die 32 carried by the arm severs the billet from the log.
  • the arm trips the limit switch LS 33 opening this switch. This deenergizes solenoid 100; and the spring 503 returns the valve 102 to the position shown in FIG. 4.
  • the lower end of cylinder 74 is therefore put on supply and the upper end on exhaust, releasing the log clamp 72.
  • the arm 23 also trips and closes a limit switch LS 33', which is tripped simultaneously with limit switch LS 33.
  • the clamp 72 has returned to its fully-released position, it again closes limit switch LS 34.
  • the rear end of the cylinder 60 is put on supply from duct 112 through the shifted valve and the line 147. At the same time the front end of the cylinder is put on exhaust through the line 148, the now shifted valve 145, and the line 149 that goes to the sump 108.
  • the solenoid 150 Upon closing of the limit switch LS 33, the solenoid 150 will also be actuated so that the valve 152 will be shifted to put the rear end of the cylinder 82 on supply from the duct 1H2 through the now-shifted valve E52 and the duct 154. The front end of this cylinder will go on exhaust through the duct 156, the now-shifted valve 152 to the sump 108 so that rod 85 advances. The limit switch LS 40 is closed at this time.
  • the log has been pushed fully back into the log heater or furnace 68 (FIG. 2) and the billet has been pushed out onto the billet cradle (FIG. 1).
  • the billet may then be transferred into the press and be extruded.
  • piston 62 At the end of its movement in pushing the log back into the furnace, the piston 62 will trip the limit switch LS 38, causing the solenoid 360 to be energized which returns valve M5 to the position shown in FIG. 4 and causes return of piston 62 to the position shown in that Fig. Also, at the end of its advance, piston 83 opens switch LS 4th to deenergize solenoid 150 to return piston 83 to its starting position (FIG. 4).
  • the solenoid is operated through the closed pressure switch 127.
  • the hot log which is to be sheared, is fed out of the furnace or heater 68 through the bores of the tubular dies 34 (FIG. 3) and 32 (FIG. 1) until its protruding end contacts stop 58.
  • clamp piston 73 (FIG. 4) will be actuated to cause clamp 72 to descend and clamp the log against anvil 77.
  • pistons 18 and 40 will be actuated to push and pull, respectively, on arm 23, causing this arm to pivot about shaft 25 and sever a billet of the desired length from the hot log.
  • the limit switch LS 33 At the end of the downward pivotal movement of the arm, the limit switch LS 33 will be tripped to cause release of the log clamp 72, and the cylinder 60 (FIGS.
  • a billet shearing machine comprising a fixed tubular die mounted in said frame and having an opening for receiving a billet log
  • tubular die mounted on said carrier and having a bore therein of approximately the same crosssectional size and shape as said fixed die and adapted also to receive the billet log when said dies are aligned
  • a reciprocable plunger mounted on said carrier in offset relation to the second-named die and disposed to be aligned with said fixed die at the end of the pivotal movement of the carrier in said one direction
  • a second reciprocable plunger is mounted on said frame in offset relation to said fixed die for movement parallel to the longitudinal center line of said fixed die and positioned so that at the end of the pivotal movement of said carrier in said one direction it is aligned axially with said second-named die, and
  • a billet shearing maching comprising a frame, a
  • a fixed tubular die mounted in said frame and having an opening for receiving a billet log
  • tubular die mounted on said carrier and having a bore therein approximately the same crosssectional size and shape as said fixed die and adapted also to receive the billet log when said dies are aligned
  • fluid-pressure operated means including a movable plunger, mounted on said carrier in offset relation to said second-named die and in position to be aligned with said fixed die at the end of the pivotal movement of said carrier in said one direction,
  • fluid pressure operated means including a movable plunger mounted on said frame in offset relation to said fixed die for movement parallel to the longitudinal center line of said fixed die and positioned so that at the end of the pivotal movement of said carrier in said one direction it is aligned with said second-named die, and
  • a billet shearing machine as claimed in claim 3 having means for releasing said clamping means at the end of the pivotal movement of said carrier in said one direction, and means operative upon release of said clamping means to render said two fluid-pressure operated means operative to push the log out of said fixed die and to push the severed billet out of the secondnamed die.
  • a billet shearing machine comprising a frame
  • a fixed tubular die mounted in said frame and having an opening for receiving a billet log
  • tubular die mounted on said carrier and having a bore therein of approximately the same crosssectional size and shape as said fixed die and adapted also to receive the billet log when said dies are aligned
  • a billet shearing machine comprising a frame
  • a fixed die mounted on said frame and having a bore for receiving a hot billet log
  • a second die mounted on said carrier and having a bore of approximately the same size and shape as the bore of said fixed due and also adapted to receive the billet log when the two dies are in alignment
  • a limit switch operative, when the log has been disposed in the two dies, to actuate the last-named means to effect the shearing operation
  • the method of shearing a billet from a hot billet log which comprises positioning the log in aligned bores of a fixed and a pivotal tubular die,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Forging (AREA)
US00253623A 1972-05-15 1972-05-15 Hot log shear Expired - Lifetime US3780606A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25362372A 1972-05-15 1972-05-15

Publications (1)

Publication Number Publication Date
US3780606A true US3780606A (en) 1973-12-25

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Application Number Title Priority Date Filing Date
US00253623A Expired - Lifetime US3780606A (en) 1972-05-15 1972-05-15 Hot log shear

Country Status (9)

Country Link
US (1) US3780606A (ja)
JP (1) JPS4941230A (ja)
BE (1) BE799550A (ja)
CA (1) CA988841A (ja)
DE (1) DE2324492A1 (ja)
FR (1) FR2184820B3 (ja)
GB (1) GB1430781A (ja)
IT (1) IT987403B (ja)
NL (1) NL7306504A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793170A (en) * 1987-06-19 1988-12-27 Everett Daniels Shear blade for aluminum extrusion process
US6655249B1 (en) * 1998-08-20 2003-12-02 Wafios Aktiengesellschaft Hammer (tool machine), specifically intended for impact cutters for cutting sections of wire and/or rods
CN107662020A (zh) * 2017-10-17 2018-02-06 爱克(苏州)机械有限公司 一种数控自动送料分度剪板机
IT201600118161A1 (it) * 2016-11-22 2018-05-22 Turla S R L Dispositivo di rinforno compatto per barre metalliche.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377948U (ja) * 1976-11-30 1978-06-29
JPS5836892Y2 (ja) * 1977-07-02 1983-08-19 エヌ・テ−・エヌ東洋ベアリング株式会社 玉軸受
US4626158A (en) * 1983-07-05 1986-12-02 Gallay S.A. Container seam and a process for forming a container seam
CN103649573B (zh) 2011-07-07 2016-05-11 Ntn株式会社 滚动轴承

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US384847A (en) * 1888-06-19 hinsdale
US649850A (en) * 1898-08-06 1900-05-15 Christopher W Levalley Machine for cutting bars or wires.
US2291204A (en) * 1938-10-17 1942-07-28 American Smelting Refining Apparatus for casting metal
US2939353A (en) * 1955-01-25 1960-06-07 American Brake Shoe Co Pivoted bar cutter with automatic clamp
US3404593A (en) * 1966-07-01 1968-10-08 American Hospital Supply Corp Hypodermic syringe destroyer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US384847A (en) * 1888-06-19 hinsdale
US649850A (en) * 1898-08-06 1900-05-15 Christopher W Levalley Machine for cutting bars or wires.
US2291204A (en) * 1938-10-17 1942-07-28 American Smelting Refining Apparatus for casting metal
US2939353A (en) * 1955-01-25 1960-06-07 American Brake Shoe Co Pivoted bar cutter with automatic clamp
US3404593A (en) * 1966-07-01 1968-10-08 American Hospital Supply Corp Hypodermic syringe destroyer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793170A (en) * 1987-06-19 1988-12-27 Everett Daniels Shear blade for aluminum extrusion process
US6655249B1 (en) * 1998-08-20 2003-12-02 Wafios Aktiengesellschaft Hammer (tool machine), specifically intended for impact cutters for cutting sections of wire and/or rods
IT201600118161A1 (it) * 2016-11-22 2018-05-22 Turla S R L Dispositivo di rinforno compatto per barre metalliche.
EP3323520A1 (en) * 2016-11-22 2018-05-23 Turla S.r.l. Compact device for re-loading metal logs into a furnace
CN107662020A (zh) * 2017-10-17 2018-02-06 爱克(苏州)机械有限公司 一种数控自动送料分度剪板机

Also Published As

Publication number Publication date
FR2184820A1 (ja) 1973-12-28
BE799550A (fr) 1973-08-31
AU5563973A (en) 1974-11-14
JPS4941230A (ja) 1974-04-18
IT987403B (it) 1975-02-20
CA988841A (en) 1976-05-11
DE2324492A1 (de) 1973-11-29
GB1430781A (en) 1976-04-07
NL7306504A (ja) 1973-11-19
FR2184820B3 (ja) 1976-04-30

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AS Assignment

Owner name: FARREL CORPORATION, 25 MAIN STREET, ANSONIA, CONNE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:USM CORPORATION A CORP. OF NJ;REEL/FRAME:004570/0176

Effective date: 19860512

AS Assignment

Owner name: FOOTHILL CAPITAL CORPORATION, A CORP. OF CA, CALIF

Free format text: SECURITY INTEREST;ASSIGNOR:FARREL CORPORATION;REEL/FRAME:004588/0706

Effective date: 19860506

AS Assignment

Owner name: FARREL CORPORATION, CONNECTICUT

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FOOTHILL CAPITAL CORPORATION;REEL/FRAME:004998/0926

Effective date: 19881004

Owner name: FARREL CORPORATION, 25 MAIN ST., ANSONIA, CT 06401

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FOOTHILL CAPITAL CORPORATION;REEL/FRAME:004998/0926

Effective date: 19881004