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US3496581A - Machine for making bolts or the like - Google Patents

Machine for making bolts or the like Download PDF

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Publication number
US3496581A
US3496581A US544334A US3496581DA US3496581A US 3496581 A US3496581 A US 3496581A US 544334 A US544334 A US 544334A US 3496581D A US3496581D A US 3496581DA US 3496581 A US3496581 A US 3496581A
Authority
US
United States
Prior art keywords
blanks
header
machine
threader
pointer
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
US544334A
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English (en)
Inventor
Allan D Haines
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.)
National Machinery Co
Original Assignee
National Machinery Co
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 National Machinery Co filed Critical National Machinery Co
Application granted granted Critical
Publication of US3496581A publication Critical patent/US3496581A/en
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
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/12—Sorting arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2707/00—Automatic supply or removal of metal workpieces
    • B23Q2707/006—Automatic supply or removal of metal workpieces for thread cutting, e.g. bolts or crews

Definitions

  • It includes a header such as a progressive header or a double blowl header for working headed blanks, an elevator for transferring the headed blanks from the discharge of the header to an orienter, a pointer which receives oriented blanks from the orienter and forms Y.a point thereon, and a threader which roll forms threads on the pointed blanks.
  • a header such as a progressive header or a double blowl header for working headed blanks
  • an elevator for transferring the headed blanks from the discharge of the header to an orienter
  • a pointer which receives oriented blanks from the orienter and forms Y.a point thereon
  • a threader which roll forms threads on the pointed blanks.
  • This invention relates generally to machines for making bolts, screws, and the like, and more particularly to a novel and improved combined machine operable to produce finished bolts, screws, or the like, from wire or rod stock.
  • a machine incorporating this invention is constructed and arranged so that the machine operator can eiciently monitor the operation of the machine to insure that each of the subassemblies of the machine is properly performing its function.
  • Combined machines for the manufacture of bolts, screws, and the like, (hereinafter referred to generally as bolts) from rod or wire stock are well known. Examples of such combined machines are illustrated in the United States Letters Patents to Earl R. Frost, No. 2,020,658, John H. Friedman, No. 2,104,944, and to Robert G. Friedman, No. 3,116,499.
  • Such combined machines include a header operable to form headed blanks from wire stock, a pointer operable to point the headed blanks and a threader operable to roll threads on the shank of the blank.
  • automatic transfer is provided and the pointer and threader operate with a sufficient speed to perform their respective operations on the entire output of the header.
  • the blanks are generally maintained in substantially the same sequence as they pass through the machine.
  • the various ⁇ functioning subassemblies on the machine are arranged so that an operator at a single operating position can easily obtain sample blanks or finished articles for gauging purposes. Also, the machine is arranged so that an operator at a single operating position can observe the functions of the various subassemblies and take corrective action in the eventthat a malfunction occurs. Consequently an improved machine incorporating the present invention results in less operator fatigue and improved operating eiciency. Still further, the structure of the machine, including the component drives, is arranged to reduce machine manufacturing cost.
  • FIGURE 1 is a perspective view of a combined machine for forming bolt blanks incorporating the present invention
  • FIGURE 2 is a side elevation of the machine illustrated in FIGURE 1;
  • FIGURE 3 is a schematic illustration of paths of blank movement and of the drive connecting the various subassemblies ofthe machine.
  • the illustrated machine incorporating the present invention ineludes a double blow header operable to form headed blanks from wire stock, an elevator 11 operable to convey blanks formed by the header to a sorter 12, a pointer 13 operable to point the blanks, and a threader 14 operable to form threads on the pointed blank to complete the bolt.
  • the header 10 illustrated is a double blow header which automatically forms headed blanks for bolts, and the like, from wire stock 16. Such machines automatically cut off measured blanks from the stock 16 and work such blanks in two working strokes, within a single die, to complete a blank having a shank and head.
  • One such machine is illustrated in the United States patent to Robert G. Friedman, No. 3,031,698.
  • Other forms of headers may be used in a combined machine incorporating this invention including other types of double blow headers, as well as machines known as progressive headers which automatically transfer a blank through a series of Work stations and progressively form such blank at each station.
  • the header should be arran-ged to discharge the bolt blanks at a location substantially adjacent to an operators position indicated by a cross 17.
  • the headed blanks are discharged from the header 10 down along an inclined chute 18.
  • the chute 18 is open on its top to permit the operator to easily remove sample blanks therefrom for gauging purposes. If desired, a partial or hinged cover can be provided on the chute i8.
  • the chute 18 carries the blanks to the lowered end 19 of the elevator 11.
  • the elevator 11 is driven by a motor 21 (illustrated in FIGURE 2) through a drive chain 22 (illustrated in FIGURE l) and includes an endless belt 23 provided with spaced ites 24.
  • the belt 23 and flites 24 cooperate to form pockets which receive blanks from the chute 18 at 19. These pockets carry the blanks in substantially the same sequence as they are made by the header 10 to the upper end 26 of the elevator 11 where the belt passes over a pulley and the blanks fall down a chute into the sorter 12.
  • the sorter 12 may be of any suitable type operable to arrange the randomly oriented blanks from the elevator in a predetermined orientation for movement to the pointer. In this predetermined orientation the blanks hang by their heads on parallel tracks 27 with the shank of the blank extending down between the tracks.
  • One suitable sorter is illustrated in the United States Patent No. 3,116,499.
  • the tracks 27 are inclined at about 30 relative to the horizontal, so that the blanks slide under the influence of gravity downwardly to the pointer 1'3.
  • the illustrated pointer 13 is described in detail in my copending application, Ser. No. 523,744, filed Jan. 28, 1966.
  • other types of pointers may be utilized providing they are compatible with the remaining portions of the combined machine.
  • the tracks 27 and 28 are aligned and inclined relative to the horizontal so that the blanl-s are carried by gravity first to the pointer 13 and then to the threader 14.
  • the pointer 13 and threader 14 are inclined so that they operate on blanks moving along an inclined and relatively straight path.
  • an operator at the operators position 17 can view the movement of the blanks up along the conveyor 11 to the sorter 12 and also as they emerge from the threader 14.
  • the finished bolts are discharged from the threader at 29 substantially adjacent to the operators position 17.
  • the finished bolts pass through the door 29 and are collectedin handling means represented by a tote box 32. If desired, a power conveyor may be provided to carry the finished bolts away from the machine for cleaning and packaging.
  • a control panel 33 is mounted above the header 10 in such a position that can be easily reached by the operator at the operators position 17.
  • the various relays and automatic controls for the machine are located in a panel 34.
  • the header 10 is provided with a frame 36 and the threader with a frame 37.
  • the two frames 36 and 37 are mounted on a single base plate 38 and the pointer 13 and elevator 11 are supported on the frame 37.
  • the Separate frames are easier and more economical to manufacture when compared to a machine having a single frame for all of the subassemblies.
  • FIGURE 3 schematically illustrates the drive for the header 10, pointer 13 and thread roller i4.
  • the header 10 is provided with a main crankshaft 41 journaled on the frame 36 (illustrated in FIGURES l and 2).
  • a flywheel 42 is mounted on one end of the crankshaft 41 and is preferably driven by an electric motor through a belt drive (not illustrated).
  • the main crankshaft 41 is connected to the header slide 43 of the header 10 by a pitman 44, so that the header slide is reciprocated back and forth, relative to the fixed die 45, through one cycle each time the crankshaft 41 rotates through one revolution. Since the header 10 is a double blow header a single blank is formed each time the header slide performs two working strokes, so a single blank is produced each time the crank 41 rotates through two complete revolutions.
  • the gear train 47 is arranged to provide a two to one speed reduction so that the driven gear 49 rotates at half the speed of the crankshaft 41.
  • the driven gear 49 is mounted on a shaft 51 journaled on the frame 36 and is connected through a flexible cou pling 52 to a crankshaft 53 journaled on the frame 37. Because the shafts 51 and 53 are journaled on different frames a flexible coupling S2 is used to connect the two shafts and provides compensation for slight misalignment between the shafts. With this arrangement it is not necessary to precisely locate the frames 36 and 37 and the shafts 51 and 52 relative to each other. This permits greater manufacturing tolerances and reduces cost.
  • the crankshaft 53 is connected through a drive link 54 to a rocker arm 56 pivoted at 57 on the frame 37.
  • a second drive link 58 connects the upper end of the rocker arm 56 to a reciprocating thread rolling die 59. Consequently, rotation of the crankshaft 53 causes reciprocation of the sliding die 59 back and forth with respect to the fixed thread rolling die 61.
  • the thread roller 14 is provided with a gate, inserter and pusher of the type described in the United States Patent No. 3,139,776, but these elements are not illustrated in FIGURE 3 in order to simplify the drawings.
  • three cams 62, 63 and 64 are mounted on the crankshaft 53 and connected to drive the gate, inserter and pusher in proper timed relationship to the operation of the other elements of the thread roller.
  • the linkage operated by the cams 62 through 64 are not illustrated to simplify the drawings.
  • a sprocket wheel 66 mounted on the end of the shaft 51 opposite the flexible coupling 52 is a sprocket wheel 66 connected through a chain drive 67 to a cam shaft 68 journaled on the frame 70 of the pointer 13. Because the chain 67 is a flexible drive it accommodates slight variations in the position of the shaft 68 relative to the shaft 51, so the manufacturing tolerances of the frame positioning surfaces need not be unnecessarily small.
  • the cam 71 operates the gripper for gripping the blanks at the pointing station
  • the cams 72 and 73 reciprocate the cutter spindle 76
  • the cam 74 operates the injector for injecting blanks from the track 27 into an indexing dial 77.
  • the drive for the indexing dial 77 is schematically illustrated at 78 and is driven by a chain drive (not illustrated) from the shaft 68.
  • a motor 79 is connected to rotate the cutter head 81 for pointing the blanks.
  • the operation of the pointer 13 and threader 14 is automatically timed
  • the pointer 13 may be eliminated and the blanks are then carried by the tracks directly from the sorter 12 to the threader 14.
  • Such a machine would still provide the advantages of the present invention because an operator located at a single position can obtain sample blanks or bolts for gauging purposes without leaving the operators position.
  • the arrows 86 illustrate the blank movement from the stock 16 through the header 10 and chute 18 to the conveyor 11.
  • Arrows 87 indicate the movement of the blanks by the conveyor 11 along an inclined path upward and away from the operators position 17 to the sorter 12.
  • the arrows 88 indicate the direction of blank movement from the sorter along an inclined path extending downward and toward the operators position 17.
  • a combined machine for making headed and threaded articles comprising a header including a header slide to form headed blanks from Wire stock and discharge such blanks at a first discharge location, a threader separate from said slide to receive blanks at a supply position spaced from said first discharge location and discharge said blanks at a second discharge location substantially adjacent to said rst discharge location after for-ming a thread thereon, and transfer means to transfer blanks from said rst discharge location to said discharge location to said supply position, said header including a first frame, said threader including a second frame, mounting means securing said frames in predetermined positions relative to each other, and mechanical means driving said threader in timed relation to the operation of said header, said mechanical means including a first shaft journaled on sad first frame, a second shaft journaled on said second frame, and ⁇ a flexible drive connecting said shafts, said flexible drive allowing limited displacement of said second shaft from a predetermined position relative to said first shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Chutes (AREA)
US544334A 1966-03-24 1966-03-24 Machine for making bolts or the like Expired - Lifetime US3496581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54433466A 1966-03-24 1966-03-24

Publications (1)

Publication Number Publication Date
US3496581A true US3496581A (en) 1970-02-24

Family

ID=24171756

Family Applications (1)

Application Number Title Priority Date Filing Date
US544334A Expired - Lifetime US3496581A (en) 1966-03-24 1966-03-24 Machine for making bolts or the like

Country Status (5)

Country Link
US (1) US3496581A (es)
BE (1) BE688383A (es)
CH (1) CH447089A (es)
GB (1) GB1146758A (es)
NL (1) NL6615114A (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758900A (en) * 1971-06-03 1973-09-18 Hartford Special Machinery Co Combination point former and thread roller machine
US5131250A (en) * 1991-02-08 1992-07-21 The National Machinery Company Flat die thread roller
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
CN102764850A (zh) * 2012-07-05 2012-11-07 苏州宝强精密螺丝有限公司 一种冷镦机微型螺丝下料装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020658A (en) * 1932-10-22 1935-11-12 Nat Machinery Co Machine and method for manufacturing bolts
US2643402A (en) * 1946-01-10 1953-06-30 Landis Machine Co Machine for forming and threading bolts, screws, and the like
US3116499A (en) * 1958-10-30 1964-01-07 Nat Machinery Co Machine for making bolts
US3177507A (en) * 1962-05-24 1965-04-13 Buell Ind Inc Bolt pointer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020658A (en) * 1932-10-22 1935-11-12 Nat Machinery Co Machine and method for manufacturing bolts
US2643402A (en) * 1946-01-10 1953-06-30 Landis Machine Co Machine for forming and threading bolts, screws, and the like
US3116499A (en) * 1958-10-30 1964-01-07 Nat Machinery Co Machine for making bolts
US3177507A (en) * 1962-05-24 1965-04-13 Buell Ind Inc Bolt pointer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758900A (en) * 1971-06-03 1973-09-18 Hartford Special Machinery Co Combination point former and thread roller machine
US5131250A (en) * 1991-02-08 1992-07-21 The National Machinery Company Flat die thread roller
US5345800A (en) * 1991-02-08 1994-09-13 The National Machinery Company Flat die thread roller
US5417096A (en) * 1991-02-08 1995-05-23 Smith; Gregory A. Method for producing a thread rolling machine for use with different die sizes
US5542275A (en) * 1991-02-08 1996-08-06 The National Machinery Company Flat die thread roller
US5555757A (en) * 1991-02-08 1996-09-17 The National Machinery Company Flat die thread roller
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
WO2011081676A1 (en) * 2009-12-29 2011-07-07 Ohio Rod Products Reduced material content fasteners and systems and methods for manufacturing the same
CN102764850A (zh) * 2012-07-05 2012-11-07 苏州宝强精密螺丝有限公司 一种冷镦机微型螺丝下料装置

Also Published As

Publication number Publication date
NL6615114A (es) 1967-09-25
GB1146758A (en) 1969-03-26
BE688383A (es) 1967-03-31
CH447089A (de) 1967-11-30

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