US3786527A - Pointer for multiple size work blanks - Google Patents

Pointer for multiple size work blanks Download PDF

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Publication number
US3786527A
US3786527A US00169207A US3786527DA US3786527A US 3786527 A US3786527 A US 3786527A US 00169207 A US00169207 A US 00169207A US 3786527D A US3786527D A US 3786527DA US 3786527 A US3786527 A US 3786527A
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US
United States
Prior art keywords
work
blank
plunger
point forming
work blank
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
US00169207A
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English (en)
Inventor
R Morton
E Grohoski
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
Hartford Special 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 Hartford Special Machinery Co filed Critical Hartford Special Machinery Co
Application granted granted Critical
Publication of US3786527A publication Critical patent/US3786527A/en
Assigned to HARTFORD SPECIAL,INC. reassignment HARTFORD SPECIAL,INC. MERGER (SEE DOCUMENT FOR DETAILS). FILED IN THE OFFICE OF SECRETARY OF STATE OF CONNECTICUT ON DEC.31,1979 Assignors: HARTFORD SPECIAL MACHINERY COMPANY, THE, NEW ENGLAND MACHINE AND TOOL COMPANY THE. PAGE COMPANY THE,
Assigned to HARTFORD NATIONAL BANK AND TRUST COMPANY reassignment HARTFORD NATIONAL BANK AND TRUST COMPANY CONDITIONAL ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: HARTFORD SPECIAL, INC.
Assigned to NATIONAL MACHINERY COMPANY, THE reassignment NATIONAL MACHINERY COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARTFORD SPECIAL INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/16—Pointing; with or without cutting
    • 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
    • B21K1/56—Making machine elements screw-threaded elements

Definitions

  • a primary object of this invention is to provide a new and improved machine for effecting point forming operations on work blanks and which provides significantly improved alignment, retention and control of each work blank during a high speed production operation to provide high quality fasteners.
  • Another object of this invention is to provide an improved machine of the type described which is quick and easy to set up and adjust for work blanks of different size at a desired machine operating speed.
  • a further object of this invention is to provide such an improved machine having a rotary dial-type index ing mechanism particularly suited for facile modification to accommodate work blanks of different size.
  • Still another object of this invention is to provide such an improved machine having adjustable, fluid actuated aligning and retaining devices for precisely positioning each work blank. Included in this object is the aim of providing such a device of composite construction requiring a minimum number of parts to accommodate a full range of blank lengths and having work engaging portions which are quick and easy to replace in an economical manner.
  • FIG. 1 is a partial perspective view of a machine incorporating this invention
  • FIG. 2 is an enlarged side view, partly broken away and partly in section, of part of a point forming station of the machine of FIG. 1 and showing an arrangement of stacked index plates for accommodating a work blank of preselected size;
  • FIG. 3 is an enlarged side view, partly broken away and partly in section, showing another arrangement of stacked index plates for accommodating a work blank of a size different from that of FIG. 2;
  • F IG. 4 is a sectional view, partly broken away, taken generally along line 44 of FIG. 2;
  • FIG. 5 is a sectional view, partly broken away, taken generally along line 5-5 of FIG. 2.
  • a machine incorporating a preferred embodiment of this invention having a vibratory hopper 12 mounted on a frame 14. Headed work blanks are fed from the hopper 12 under a clearing wheel 16 into an inclined gravity feed track 18.
  • the clearing wheel 16 is adjustable for ensuring that a head of each blank such as at 20 is properly positioned in the feed track 18.
  • the slot width and height of the feed track 18 may be adjusted in accordance with varying blank sizes by suitable screw adjustment devices such as at 22 and 24, and a main feed cover 26 and extension cover 28, which is pivotally supported for swinging movement about a horizontal axis at a lower end portion of the main cover 26, ensure work blank guidance and free and easy transfer of blanks from the feed track 18 to a rotary dial-type work blank transferring and positioning mechanism or indexing mechanism 30.
  • An appropriate set of dies 46, 48 are installed in the housings 40, 42 in precise orientation to the indexing mechanism 30 to ensure that the dies 46, 48 will precisely register with a shank 50 of a blank 20 extending between the dies 46, 48 from the indexing mechanism 30 such that the shank tip of each work blank may be pointed in a forging-type operation produced by a single forging blow each time the slide 36 moves from right to left (as illustrated in FIGS. 1 and 2) to its extreme limit position.
  • the indexing mechanism 30 is mounted on a generally L-shaped frame member 52 (FIG. 2) supported on a base 54.
  • the base 54 is supported for swinging movement toward and away from the feed track 18 about a horizontal pivot shaft 56 secured to the mounting block 44.
  • the height of the frame member 52 relative to the dies 46, 48 is readily adjusted by a handle 58 on a suitable lead screw 60.
  • the lead screw 60 is threadably connected to the frame member 52 whereby the indexing mechanism 30 may be precisely adjusted relative to the pointer dies 46, 48 in accordance with a predetermined shank length of the blank to be pointed.
  • the blanks are sequentially indexed a quarter turn counterclockwise into a 9 oclock position between the dies 46, 48. Thereafter, pointed blanks are delivered to a discharge bin 64 or other suitable outlet which is preferably located downstream of the pointing station in a 6 oclock position.
  • Such indexing movement is effected by an advance pawl 66 which operates a ratchet 68 supported on top of the frame member 52 in coaxial driving relation to a dial assembly 76 of the indexing mechanism 36.
  • the advance pawl 66 is driven by an index actuating piston 72 supported for longitudinal reciprocation in an operating cylinder 74 formed in the frame member 52.
  • A. driving connection between the piston 72 and the advance pawl 66 is provided by a connecting pin 76 extending upwardly through a slot 78 in the frame member 52.
  • Operation of the slide 36 moves the movable die housing 40 and an operating lever 86, carried by the housing 46, from right to left as viewed in FIG. 1 to effeet a point forming operation during which time a noback pawl 82 maintains the ratchet 68 and dial assembly '70 in a fixed position.
  • the connecting pin '76 operates the advance pawl 66 to drive the ratchet 68 counterclockwise and advance the dial assembly 70 through a preselected incremental angular displacement.
  • Dial movement simultaneously effects receipt of a fresh work blank 26 in a 12 oclock position from the track end 62 of the feed track 118 and positions a work blank carried by the dial assembly 76 into a 9 oclock position between the pointer dies 46., 418 while discharging a pointed blank in a 6 oclock position into the discharge bin 64%.
  • FIG. 2 shows an arrangement according to this invention wherein two spaced apart concentric dials 84 and 86 are secured by suitable fasteners (only one shown-at 88) in assembled coaxial relation to a dial housing 90 and the ratchet 68.
  • This entire dial assembly 70 is supported on the frame 52 for synchronous rotation in response to an indexing movement effected by the advance pawl 66.
  • the dials 84, 86 are shown fixed on opposite axial end surfaces of a spacer plate 92 with the upper dial 84 being shown interposed between spacer plate 92 and second spacer plate 94 secured on the bottom of the dial housing 96 with each dial and spacer plate being tailored for a specific assortment of blank diameter and blank length sizes.
  • Peripheral portions of the dials 84 and 86, positioned approximately along the angular path of blank movement between the 12 oclock and 6 oclock positions, are respectively enclosed by a pair of retaining plates 96 and 98 shown in FIG. 2 suitably secured in fixed relation to the frame member 52 in generally coplanar relation to the dials 84 and 86.
  • the retaining plates 96, 98 each have arcuate inner peripheral edge surfaces (such as shown at 100 on plate 96 in FIG. 4) in radially outwardly disposed adjacent relation to the periphery of their respective dials 84, 86 for maintaining continuous control over each work blank as it is indexed through the diametrically opposed entrance and exit positions in the pointing station.
  • a similar arrangement of spacer elements 162 and 1164 are provided for positioning the retaining plates 96 and 98 with the spacer elements 102, 104 being fixed to the frame member 52.
  • a set of dial modules of varying diameter grooves and thicknesses accordingly may be provided to accommodate a full range of blanks to be pointed, and dials of different thicknesses with work blank engagement grooves of the same size are readily interchangeable for modifying the point former to accommodate a full range of work blank shank lengths for a given diameter size.
  • an air spring is incorporated in the frame member 52 to serve not only as an air cushion upon actuation of the indexing piston 72, but also to effect a controlled return of the piston 72 from left to right during an indexing movement upon retraction of the slide 36.
  • a conventional air pressure regulator I22 is shown in the supply line 1 l4. Adjustment of the pressure of the compressed air within the cylinder 74 to a predetermined level accordingly may be set for a broad range of performance requirements for a variety of work blank sizes in a single machine.
  • an adjustable head pusher assembly 124 (FIG. 5) is provided to effect a variable force on a button 126 provided on a lower terminal end of a plunger 128 reciprocably mounted in an opening 130 in the frame member 52.
  • Opening 1311 extends generally perpendicular to the dial @4- at approximately the 9 oclock position immediately above the pointer dies 46, 48.
  • the opening 130 constitutes termination of an air supply passageway 132 which may be connected to a source of compressed air through tubing 1353.
  • a point former machine for pointing multiple size shanks of headed work blanks and comprising a frame, a point forming station including power operated die means operably mounted on the frame, means for feeding work blanks to the point forming station, a work blank transferring and positioning mechanism for automatically receiving and transferring blanks from the feeding means into position in the point forming station for a pointing operation, the transferring and positioning mechanism including a modular index assembly which is interchangeable with other modular index assemblies to accommodate work blanks of various shank lengths and diameters, the index assembly including a module of co-axially stacked dials supported for synchronous rotation on the frame and having correspondingly circumferentially spaced work blank engagement grooves, fluid circuit means mounted on the frame and defining first and second passageways connected to a source of pressurized fluid, a first plunger mounted in the first passageway for applying a biasing force to the head of each work blank at the point forming station urging the blank axially toward the die means and into seating engagement with the index assembly, a second plunger mounted in the second
  • the machine of claim 8 including a sealing subassembly mounted within the first passageway about the first plunger and providing perimeter sealing to prevent fluid leakage between the first plunger and its passageway whereby the first plunger is subjected to the pressure of a trapped volume of fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
  • Jigs For Machine Tools (AREA)
US00169207A 1971-08-05 1971-08-05 Pointer for multiple size work blanks Expired - Lifetime US3786527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16920771A 1971-08-05 1971-08-05

Publications (1)

Publication Number Publication Date
US3786527A true US3786527A (en) 1974-01-22

Family

ID=22614633

Family Applications (1)

Application Number Title Priority Date Filing Date
US00169207A Expired - Lifetime US3786527A (en) 1971-08-05 1971-08-05 Pointer for multiple size work blanks

Country Status (15)

Country Link
US (1) US3786527A (de)
JP (1) JPS4825980A (de)
AR (1) AR194606A1 (de)
BE (1) BE786920A (de)
BR (1) BR7205242D0 (de)
CA (1) CA975117A (de)
CH (1) CH557207A (de)
DE (1) DE2236569A1 (de)
ES (1) ES405414A1 (de)
FR (1) FR2148317A1 (de)
GB (1) GB1379821A (de)
IL (1) IL39563A0 (de)
IT (1) IT963735B (de)
NL (1) NL7209705A (de)
ZA (1) ZA723541B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001906A (en) * 1975-08-14 1977-01-11 Betz John N Machine for cutting slots in screw shanks
US4015301A (en) * 1975-08-19 1977-04-05 Yuan Ho Lee Cut-off stock feeding device for an automatic high speed cold nut former
US4069530A (en) * 1975-11-14 1978-01-24 Angis - Anstalt Apparatus for chamfering, pointing or the like of workpieces having a head or shoulder
US4149287A (en) * 1977-11-29 1979-04-17 Usm Corporation Method and apparatus for pinch pointing screw blanks
US4184217A (en) * 1977-05-09 1980-01-22 Kameo Dohi Pinch-pointing machine
US4241468A (en) * 1978-12-26 1980-12-30 Allstar Fasteners, Inc. Adjustable shank slot dial
US4335479A (en) * 1978-05-23 1982-06-22 Celus Fasteners Manufacturing, Inc. Method and apparatus for making blind rivets
US4355430A (en) * 1979-09-14 1982-10-26 Usm Corporation Pointing machine
WO1999022891A1 (en) * 1997-11-05 1999-05-14 Optical Boring Company Fastener forming machine
US6248020B1 (en) 1997-11-05 2001-06-19 L & M Machining And Manufacturing, Inc. Fastener forming machine
US20070101797A1 (en) * 2005-11-01 2007-05-10 Quan Nancy N Endodontic instruments
CN102049576A (zh) * 2010-11-12 2011-05-11 吴江市菀坪镙丝厂 铣槽机
CN111774676A (zh) * 2020-08-05 2020-10-16 曾永宏 一种用于多批量小型螺丝自动磨削加工设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436141C2 (de) * 1974-07-26 1983-04-21 Yuan Ho Tainan Lee Vorrichtung zur Herstellung angestauchter Drahtstücke aus einem Draht
CS179156B1 (en) * 1975-06-11 1977-10-31 Josef Kaspar Method of screens produce and device for executing of this method
CA1146307A (en) * 1979-09-14 1983-05-17 Edwin J. Skierski Pointing machine for pinch pointing screw blanks
CN112809072A (zh) * 2021-01-06 2021-05-18 钟秀萍 一种管状型材料用长度可调式夹具床

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1166621A (en) * 1911-12-30 1916-01-04 James Monks Slotting-machine.
US1184033A (en) * 1915-12-06 1916-05-23 Frank R Scofield Mechanism for producing merchantable bolts from bolt-blanks.
US1546914A (en) * 1924-02-18 1925-07-21 Bowen Hardware Corp Blank-presentation mechanism
US2335258A (en) * 1942-10-24 1943-11-30 Butler Frank David Hydraulically operated vise assembly
US2415037A (en) * 1943-10-04 1947-01-28 Edwin A F Redmer Work feeding and holding apparatus
US2674754A (en) * 1949-11-18 1954-04-13 South Chester Corp Shank slotting machines
DE1003169B (de) * 1954-10-13 1957-02-28 Th Calow & Co Anfaseinrichtung an Gewindewalzmaschinen
US3111697A (en) * 1961-03-27 1963-11-26 Olympic Screw & Rivet Corp Screw-slotting and burring machine
US3252367A (en) * 1962-12-20 1966-05-24 Nann Erwin Apparatus for removing nipples from turned workpieces
US3289228A (en) * 1965-10-19 1966-12-06 Sundstrand Corp Screw head slotting apparatus
US3435472A (en) * 1966-01-28 1969-04-01 Nat Machinery Co The Pointer mechanism

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1166621A (en) * 1911-12-30 1916-01-04 James Monks Slotting-machine.
US1184033A (en) * 1915-12-06 1916-05-23 Frank R Scofield Mechanism for producing merchantable bolts from bolt-blanks.
US1546914A (en) * 1924-02-18 1925-07-21 Bowen Hardware Corp Blank-presentation mechanism
US2335258A (en) * 1942-10-24 1943-11-30 Butler Frank David Hydraulically operated vise assembly
US2415037A (en) * 1943-10-04 1947-01-28 Edwin A F Redmer Work feeding and holding apparatus
US2674754A (en) * 1949-11-18 1954-04-13 South Chester Corp Shank slotting machines
DE1003169B (de) * 1954-10-13 1957-02-28 Th Calow & Co Anfaseinrichtung an Gewindewalzmaschinen
US3111697A (en) * 1961-03-27 1963-11-26 Olympic Screw & Rivet Corp Screw-slotting and burring machine
US3252367A (en) * 1962-12-20 1966-05-24 Nann Erwin Apparatus for removing nipples from turned workpieces
US3289228A (en) * 1965-10-19 1966-12-06 Sundstrand Corp Screw head slotting apparatus
US3435472A (en) * 1966-01-28 1969-04-01 Nat Machinery Co The Pointer mechanism

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001906A (en) * 1975-08-14 1977-01-11 Betz John N Machine for cutting slots in screw shanks
US4015301A (en) * 1975-08-19 1977-04-05 Yuan Ho Lee Cut-off stock feeding device for an automatic high speed cold nut former
US4069530A (en) * 1975-11-14 1978-01-24 Angis - Anstalt Apparatus for chamfering, pointing or the like of workpieces having a head or shoulder
US4184217A (en) * 1977-05-09 1980-01-22 Kameo Dohi Pinch-pointing machine
US4149287A (en) * 1977-11-29 1979-04-17 Usm Corporation Method and apparatus for pinch pointing screw blanks
FR2409804A1 (fr) * 1977-11-29 1979-06-22 Usm Corp Procede et machine pour appointer des ebauches de vis par serrage entre deux matrices
US4335479A (en) * 1978-05-23 1982-06-22 Celus Fasteners Manufacturing, Inc. Method and apparatus for making blind rivets
US4241468A (en) * 1978-12-26 1980-12-30 Allstar Fasteners, Inc. Adjustable shank slot dial
US4355430A (en) * 1979-09-14 1982-10-26 Usm Corporation Pointing machine
WO1999022891A1 (en) * 1997-11-05 1999-05-14 Optical Boring Company Fastener forming machine
US6004215A (en) * 1997-11-05 1999-12-21 L & M Machinery & Manufacturing Fastener forming machine
US6089985A (en) * 1997-11-05 2000-07-18 L & M Machining And Manufacturing, Inc. Fastener sorting apparatus
US6179718B1 (en) 1997-11-05 2001-01-30 L & M Machining And Manufacturing, Inc. Hole forming apparatus
US6248020B1 (en) 1997-11-05 2001-06-19 L & M Machining And Manufacturing, Inc. Fastener forming machine
US20070101797A1 (en) * 2005-11-01 2007-05-10 Quan Nancy N Endodontic instruments
CN102049576A (zh) * 2010-11-12 2011-05-11 吴江市菀坪镙丝厂 铣槽机
CN111774676A (zh) * 2020-08-05 2020-10-16 曾永宏 一种用于多批量小型螺丝自动磨削加工设备

Also Published As

Publication number Publication date
ES405414A1 (es) 1976-01-16
GB1379821A (en) 1975-01-08
NL7209705A (de) 1973-02-07
FR2148317A1 (de) 1973-03-11
IL39563A0 (en) 1972-07-26
ZA723541B (en) 1973-03-28
CA975117A (en) 1975-09-30
AR194606A1 (es) 1973-07-31
DE2236569A1 (de) 1973-02-15
IT963735B (it) 1974-01-21
JPS4825980A (de) 1973-04-04
CH557207A (de) 1974-12-31
BR7205242D0 (pt) 1973-08-21
BE786920A (fr) 1972-11-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HARTFORD NATIONAL BANK AND TRUST COMPANY

Free format text: CONDITIONAL ASSIGNMENT;ASSIGNOR:HARTFORD SPECIAL, INC.;REEL/FRAME:003903/0922

Effective date: 19810515

AS Assignment

Owner name: NATIONAL MACHINERY COMPANY, THE, TIFFIN, OHIO. A C

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HARTFORD SPECIAL INC.;REEL/FRAME:004128/0709

Effective date: 19830503