US3747144A - Machine for manufacturing screw bolts and the like by means of a number of shaping stations - Google Patents

Machine for manufacturing screw bolts and the like by means of a number of shaping stations Download PDF

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Publication number
US3747144A
US3747144A US00120938A US3747144DA US3747144A US 3747144 A US3747144 A US 3747144A US 00120938 A US00120938 A US 00120938A US 3747144D A US3747144D A US 3747144DA US 3747144 A US3747144 A US 3747144A
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United States
Prior art keywords
trimming
machine
carriage
main carriage
stroke
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Expired - Lifetime
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US00120938A
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English (en)
Inventor
De Meerendonk G Van
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.)
Nedschroef Octrooi Maatschappij NV
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Nedschroef Octrooi Maatschappij NV
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    • 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

Definitions

  • the machine for manufactring bolts and the like as disclosed includes a frame, a number of shaping stations, more particularly for upsetting and trimming of blanks, said machine comprising a reciprocable main carriage mounted for reciprocation in the frame and carrying upsetting heads adapted to cooperate with dies mounted in a die plate fixed in the frame of the machine, a reciprocable trimming die adapted to cooperate with a trimming punch attached to the die plate, means for reciprocating the main carriage and trimming die to carry out a series of upsetting and trimming operations with respect to workpieces handled by the machine, the main carriage including means for effecting upsetting operations at each stroke and the trimming die effecting a trimming operation on an upset article at each working stroke, and means for varying the stroke of the trimming die relative to the stroke of the main carriage to start the trimming operation prior to the starting of the upsetting operation.
  • the present invention relates to a machine for manufacturing bolts and the like article blanks at a number of shaping stations, more particularly for upsetting and trimming of blanks, which machine includes a carriage which is reciprocable by a crankshaft and a connecting rod and has holding members having upsetting heads adapted to co-operate with a die plate fixed in the machine frame and comprising dies, the machine further including a reciprocable trimming die adapted to cooperate with a trimming punch or die attached to the die plate.
  • a crank-drive is preferably employed for driving the upsetting mechanism of such a machine, because the required large upsetting forces can be exerted thereby.
  • the object of the present invention is to provide a machine in which the trimming operation is distributed over a longer period of time than is possible with the usual crank-drive.
  • a mechanism which at the beginning of the working stroke of the carriage starts the operation of the trimming die, such that the trimming operation is distributed over a greater portion of the working stroke of the carriage and therefore takes place with a slower rate than the upsetting operation.
  • an auxiliary carriage is provided in the reciprocable carriage, the holding member for the trimming. die being attached to said auxiliary carriage, the reciprocable main carriage being provided with a pivotable two-armed lever, one arm of which is connected with the auxiliary carriage and the other arm being provided with a roller or the like which can co-operate with a cam member that is adjustably connected with the machine frame.
  • the cam member may comprise a rectilinear portion and a portion with downward inclination, an adjustment being possible in such a way that said rectilinear portion always extends parallel to the direction of movement of the main carriage and that said inclined portion provides the auxiliary carriage with a reduced-running movement.
  • the main crankshaft is provided with a cam against which a portion of the auxiliary carriage provided with a roller or the like is pressed by a spring means or the like, the shape and the position of said cam being. selected in such a way that the moment of the beginning of the trimming operation is earlier than the moment of the beginning of the upsetting opcration and that the trimming operation is slower than the upsetting operation.
  • the trimming mechanism of the auxiliary carriage such that the trimming punch, which is normally fixed in the die block, is adapted to make a restricted reciprocatory movement during the trimming operation so the trimming speed is thereby decreased.
  • FIG. 1 is a diagram illustrating the movement of the main carriage and of the auxiliary carriage of a machine embodying the invention
  • FIG. 2 is a horizontal longitudinal sectional view of one embodiment of the machine, the main carriage being in its most forward position and the upsetting heads abutting the dies, the auxiliary carriage also being in its forward position;
  • FIG. 3 is a vertical longitudinal sectional view of the machine along the line IIIIII in FIG. 2;
  • FIG. 4 is a sectional view like that of FIG. 3, but showing the main and auxiliary carriages in their rearward positions;
  • FIG. 5 is a vertical longitudinal sectional view of the machine along line V-V in FIG. 2;
  • FIG. 6 is a vertical longitudinal sectional view of another embodiment of the machine.
  • FIGS. 2 to 5 of the drawings comprises a crankshaft l with a crank 2 and connecting rod 3 connected to a main carriage 4 by means of a pin 5, so that the main carriage 4 is adapted to make one reciprocating movement for each revolution of the crankshaft l in the frame 6.
  • the main carriage 4 has guiding means 7 and 8.
  • Various headholding means 9 are attached to the carriage 4, exchangeable upsetting heads 10 being positioned in the holdingmeans 9. Dies ll co-operating with the upsetting heads 10 are attached to a die plate 12 carried by the frame 6 of the machine.
  • moveable ejecting pins 13 which are operated by ejecting arms 14 movable by ejecting cams 15 carried by a shaft 16, the movement of said shaft 16 being derived from the crankshaft 1.
  • An auxiliary carriage 17, shown in FIGS. 2, 3 and 4, is movable in the main carriage 4.
  • Holding means 18 attached to the auxiliary carriage 17 carries an exchangeable trimming die 19 that is adapted to cooperate with a trimming punch or die 20 attached to the die plate 12.
  • the auxiliary carriage 17 receives a reciprocating movement from a bell-crank lever 21 pivotable on a pivot 22 inbearings 23 in the main carriage 4.
  • One arm of the bell-crank lever 21 is connected with the auxiliary carriage 17 by means of a shiftable block 24 and the-other arm has a roller 25 that moves, when the main carriage 4 moves, over a cam means 26 adjustable in the frame 6, said cam means 26' comprising a straight portion 27 and a downwardly inclined portion 28 (FIG. 3).
  • a tension spring 29 takes care that the roller 25 is always maintained on the cam means 27 and 28.
  • the cam 26 can be adjusted longitudinally by means of adjusting screwbolts 31 and 32, shown in FIGS. 3 and 4.
  • FIG. 6 Another embodiment for moving the auxiliary carriage with the trimming die relatively to the main carriage is shown in FIG. 6.
  • the auxiliary carriage 170 receives its movement from a cam 33 on the crankshaft la.
  • Said shaft provides the auxiliary carriage with a reciprocating movement through the roller 34 and the also reciprocating main carriage 4a, the spring 35 producing a pressure urging the roller to follow the cam.
  • the starting moment of the trimming operation is determined by the shape of the cam. Said operation, therefore, is at least partially independent of the movement of the main carriage, which is brought about in this embodiment in the usual way by means of a crank and a connecting rod.
  • one revolution (360) of the machine crankshaft is indicated by the reference a, and b indicates the stroke of the main carriage 4 or 4a, c being the height of the head of the article, 1 being the starting point of the trimming operation in the known machines, ll being the starting point of the trimming operation in a machine embodying the present invention and d being the most forward position of the carriage 4.
  • a machine for manufacturing bolts and the like including a frame, a number of shaping stations, more particularly for upsetting and trimming of blanks, said machine comprising a reciprocable main carriage mounted for reciprocation in the frame and carrying upsetting heads adapted to cooperate with dies mounted in a die plate fixed in the frame of the machine, a reciprocable trimming die adapted to cooperate with a trimming punch attached to the die plate, means for reciprocating the main carriage and trimming die to carry out a series of upsetting and trimming operations with respect to workpieces handled by the machine, the main carriage including means for effecting upsetting operations at each stroke and the trimming die effecting a trimming operation on an upset article at each working stroke, and means for varying the stroke of the trimming die relative to the stroke of the main carriage to start the trimming operation prior to the starting of the upsetting operation.
  • a machine as claimed in claim 1 including an auxiliary carriage mounted on said main carriage for reciprocation therewith, means on said auxiliary carriage for holding said trimming die, and wherein the means for varying the stroke of the trimming die relative to the stroke of the main carriage includes means for retarding the forward movement of the auxiliary carriage during a portion of the forward movement of the main carriage.
  • a machine as claimed in claim 2 including a bellcrank lever pivoted to the main carriage having one arm connected with the auxiliary carriage, a cam means mounted on the frame along which the other arm of the bell-crank lever operates as the carriages are moved toward and away from the die plate.
  • cam means comprises a rectilinear portion extending parallel to the direction of movement of the main carriage and a downwardly inclined portion for varying the movement of the auxiliary carriage relative to that of the main carriage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
US00120938A 1970-03-05 1971-03-04 Machine for manufacturing screw bolts and the like by means of a number of shaping stations Expired - Lifetime US3747144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7003131A NL7003131A (de) 1970-03-05 1970-03-05

Publications (1)

Publication Number Publication Date
US3747144A true US3747144A (en) 1973-07-24

Family

ID=19809503

Family Applications (1)

Application Number Title Priority Date Filing Date
US00120938A Expired - Lifetime US3747144A (en) 1970-03-05 1971-03-04 Machine for manufacturing screw bolts and the like by means of a number of shaping stations

Country Status (17)

Country Link
US (1) US3747144A (de)
AT (1) AT305006B (de)
AU (1) AU2610871A (de)
BE (1) BE763409A (de)
CA (1) CA937709A (de)
CH (1) CH540730A (de)
DE (1) DE2109210B2 (de)
ES (1) ES388878A1 (de)
FR (1) FR2081727B1 (de)
GB (1) GB1316391A (de)
IL (1) IL36307A0 (de)
IT (1) IT940416B (de)
LU (1) LU62714A1 (de)
NL (1) NL7003131A (de)
SU (1) SU376922A3 (de)
TR (1) TR16853A (de)
ZA (1) ZA711256B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130005A (en) * 1976-06-25 1978-12-19 The National Machinery Company High speed ball header
CN102570235A (zh) * 2011-12-14 2012-07-11 苏州工业园区高登威科技有限公司 插片机用产品放置架
CN114273582A (zh) * 2021-11-16 2022-04-05 浙江宝拓机械股份有限公司 一种螺丝成型冷镦机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825988C2 (de) * 1977-08-15 1983-04-07 The National Machinery Co., 44883 Tiffin, Ohio Verfahren und Kaltformpresse zum Kaltformen zylindrischer Drahtabschnitte zu kugelförmigen, zylindrischen oder ähnlichen Werkstücken
CN108380805B (zh) * 2018-02-08 2023-11-24 江苏海宇机械有限公司 方向机螺栓的精锻成型模具

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US46434A (en) * 1865-02-14 watkins
US2155920A (en) * 1937-05-10 1939-04-25 Arthur J Alberts Heading and trimming machine
US2315769A (en) * 1942-09-21 1943-04-06 William J Carney Bolt and rivet making machine
GB566363A (en) * 1943-06-03 1944-12-27 Greenwood & Batley Ltd Improvements in or relating to heading machines
US3101632A (en) * 1957-12-09 1963-08-27 Textron Ind Inc Machine for forming metal articles
US3263480A (en) * 1959-07-06 1966-08-02 Textron Ind Inc Transfer mechanism for header machines
US3299452A (en) * 1965-02-26 1967-01-24 George W Haycock Ship's lifeboat davits

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB780830A (en) * 1955-09-07 1957-08-07 Friedrich Karl Koch An improved automatic multi-stage press
GB904026A (en) * 1957-12-18 1962-08-22 Textron Ind Inc Improvements in or relating to headers or like apparatus
GB870889A (en) * 1958-04-22 1961-06-21 Carl Hoelzer Apparatus for forming bolts, screws or rivets by hot pressing
FR1416827A (fr) * 1964-12-07 1965-11-05 Nedschroef Octrooi Maats Perfectionnements apportés aux machines à refouler pour la fabrication de vis, boulons et analogues

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US46434A (en) * 1865-02-14 watkins
US2155920A (en) * 1937-05-10 1939-04-25 Arthur J Alberts Heading and trimming machine
US2315769A (en) * 1942-09-21 1943-04-06 William J Carney Bolt and rivet making machine
GB566363A (en) * 1943-06-03 1944-12-27 Greenwood & Batley Ltd Improvements in or relating to heading machines
US3101632A (en) * 1957-12-09 1963-08-27 Textron Ind Inc Machine for forming metal articles
US3263480A (en) * 1959-07-06 1966-08-02 Textron Ind Inc Transfer mechanism for header machines
US3299452A (en) * 1965-02-26 1967-01-24 George W Haycock Ship's lifeboat davits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130005A (en) * 1976-06-25 1978-12-19 The National Machinery Company High speed ball header
CN102570235A (zh) * 2011-12-14 2012-07-11 苏州工业园区高登威科技有限公司 插片机用产品放置架
CN114273582A (zh) * 2021-11-16 2022-04-05 浙江宝拓机械股份有限公司 一种螺丝成型冷镦机
CN114273582B (zh) * 2021-11-16 2024-03-22 浙江宝拓机械股份有限公司 一种螺丝成型冷镦机

Also Published As

Publication number Publication date
DE2109210A1 (de) 1971-09-30
AT305006B (de) 1973-02-12
FR2081727A1 (de) 1971-12-10
CH540730A (de) 1973-08-31
NL7003131A (de) 1971-09-07
ES388878A1 (es) 1973-06-01
DE2109210B2 (de) 1973-10-25
SU376922A3 (de) 1973-04-05
GB1316391A (en) 1973-05-09
BE763409A (fr) 1971-07-16
CA937709A (en) 1973-12-04
LU62714A1 (de) 1971-08-20
ZA711256B (en) 1971-11-24
TR16853A (tr) 1973-07-01
IL36307A0 (en) 1971-05-26
FR2081727B1 (de) 1974-02-15
AU2610871A (en) 1972-09-07
IT940416B (it) 1973-02-10

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