US2924131A - Machines for forming and pressing sheet metal and profiles - Google Patents

Machines for forming and pressing sheet metal and profiles Download PDF

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Publication number
US2924131A
US2924131A US679289A US67928957A US2924131A US 2924131 A US2924131 A US 2924131A US 679289 A US679289 A US 679289A US 67928957 A US67928957 A US 67928957A US 2924131 A US2924131 A US 2924131A
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United States
Prior art keywords
lever
machine
machines
forming
profiles
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Expired - Lifetime
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US679289A
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English (en)
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Eckold Walter
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/02—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism
    • B30B1/06—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism operated by cams, eccentrics, or cranks

Definitions

  • An object of the invention is to make the operation of the machines practically independent of the need for lubrication, and at the same time so to simplifythe design of such machines that their manufacture and assembly becomes simple and economical.
  • the plate may be supported by a resilient mass such as a rubber mass to which the plate is bonded, the mass also being bonded to the ram.
  • Fig.1 shows a longitudinal section through a machine according to the invention
  • vFig. 2 is a part section on the line A-A of Fig. 1
  • Fig. 3 is a horizontal section of the embodiment of Fig. 1,
  • Fig. 4 is a longitudinal part section through the top of another embodiment of the invention.
  • Fig. 5 is a section on the line B--B of Fig. 4,
  • Fig. 6 shows the drive of a twin machine
  • Fig. 7 is a detail showing a modification
  • Fig. 8 shows a further type of drive
  • Fig. 9 is a section on the line C-C of Fig. 8, c.
  • Fig. 10 shows the drive of Fig. 8 used in a twin machine
  • t Fig. 11 is a section on the line D D of Fig. 10.
  • a double-ended lever 2 floats inside a housing 1 of the machine, that is, the lever does not turn about a 2 2,924,131 'Fatented F b. 9,1960
  • Rubber blocks Adhering to the insides of these lugs are rubber blocks, which are preferably precompressed and which fill the space between the lugs 7" and the sides of the lever 2. If these rubber blocks are pre-compressed in an upward direction, all looseness between the support 7 and the rolling surface of the lever 2 in contact with it is eliminated. Further flexible support for the lever 2' is provided by another pair of rubber-metal elements 8. Those elements are attached, on the one hand to the central web 2". of the lever 2 which is formed by recesses at each side of the lever, and on the other hand to the sides of the housing 1. These rubber connections are pre-compressed such that they always press the pulley 4 against a pulley or wheel 9 of a motor 11.
  • This effect can be reinforced, or alternatively can be provided, by a roller arch 10, which is supported resiliently by a rubber torsion bush 10'.
  • a roller arch 10 which is supported resiliently by a rubber torsion bush 10'.
  • the pulley 9 which is driven by the motor 11, eccentrically, in which case the pressure roller 4 would run centrically. If one or both of these transmission elements were to be made of some hard plastic or laminated material noise during the operation of the machine wouldv be largely eliminated.
  • the machine has a ram in the form of a hollow cylinder 13 having a slot 13' through which the end 2 of the lever passes into the inside of the cylinder.
  • the eccentric drive formed by 4 and 9 causes the lever arm 2' to reciprocate and the motion of this arm is transmitted through the ram and the fiat plate 3 to a press tool 12.
  • the fiat plate 3 is freely supported on the bottom 13" of the hollow cylinder 13 and is held resiliently inside a rubber cushion 14 to which the plate is bonded.
  • the cushion 14 is'also bonded to the internal surface of the cylinder.
  • the hollow cylinder 13 is closed by a screwed plug 15. This plug exerts such a pressure on an intermediate rubber spacer 16 that all play at the contact edges of the fiat plate 3 will be prevented.
  • the ram of the machine is thus made in the form of a hollow cylinder, and the inertia of the parts which have to be accelerated at every stroke is considerably reduced in comparison with the solid shape formerly used for such parts, so that the vibrations set up by the ma chine are greatly reduced.
  • a blank 17 is inserted between the upper press 'tool 12 and a fixed bottom press tool 12'. If the operation is to produce compressive or tensile deformation of the sheet, it is preferable to use for this purpose tools with clamping jaws moving in opposite directions.
  • the motor 11 is switched on, actuating the eccentric drive 4, 9, and the upper press tool 12 will move up and down with short strokes and will, in conjunction with the lower tool 12, cause the compressive or tensile deformation of the blank.
  • thrusts of the order of several tons are being transmitted, the whole system remains flexible and does not require any lubrication. It will be seen that the centre line of the plate 3 is in line with the point of application of pressure by the press tool 12.
  • Figures 4 and 5 show an embodiment of the invention in which the support of the pressure pad 5 is provided byea movable'and easily exchangeable cap 18 having a .cylindrical contact surface..18. .Anyeceentric power transmission which might possibly occur will, in this way, be automatically eliminated.
  • rubber- "metal elements are 'againrrprovidedzin this embddimeht 1 to support lever zresiliently. and' whichexert a forcegsuch l asto prevent any-play betweenrthe rolling? contact .fac'es. :In order to reducewearof the? contact face of :the'lever [2 it is provided witha hardened inset 21 which can easily be exchanged when necessary.
  • Insorderxto provide a 'sati'sfactoryhinge (between the'upper edge of :the flat plate '3 and the under side of the end 2 of the lever, a ball.22 is provided which is located in sphericalwseat- .ings in both these parts.
  • Fig. 6 shows the principle of a twin machine," in which aQcentral driving pulley 23 supplies the. power-for the 7 two press units 12 and 12..':The two levers 2 goingto -the left and to the rightare here each driven by an eccentric 4.
  • the purpose of the hand wheels 4 is as berfore. to enable the travel of the. press tools to be ad- I justed.
  • Fig. 7 shows part of an embodiment of the invention in which the flat plate' 3 is 'placed eccentrically with respect to the hollow cylinder 13. This arrangement would be usefulif the press tools, as shown in Figs. 1 and6, are also mounted eccentrically in the machine but if nevertheless it is desired to transmit pressure to them on as accurately central a line as possible.
  • the contact surface 24" of the connecting link 24x is here made wide enough so that the ends 2" of the levers of both halves of the machine canbe accommodated on 1 top of it.
  • the same type of rubbermetalelementsZS as in Figs. Sand 9 are provided with the two ends 2" of the levers arranged between them.
  • the housing of themachine can besplit longitudinally in two halves whichare screwed together.
  • the housing is best closed at the front by 'a separate cover. 26'which forms, togetherwith the housing or: with the halves of the housing, a bearing for the support ofthe reciprocating machine ram.. This would simplify considerably the assembly of the various parts of the machine; in some cases their assembly would not be possible without such an arrangement at all. i
  • the motor drive of the machine could also actuate the lower tools; in that case, a twin machine might be so arranged thaton one side the upper tool and on the other side the lower tool is driven by the motor.
  • the housing 1 is supported by a rigid pedestal 27. .On the other hand, the housing might also be supported in a movable frame suitable fordifferent working positions.
  • These machine elements'used' for the transmission. of power in the machines described above may have to trans- .rnit forces amounting to several tons and by. abandoning the former practice of supporting them in fixed pivots it becomes possible to make the .transmission'of power so flexible thatthe :sndden impact loadstoiwhich they had Here again, both parts are 'so constrained formerly been subjected are eliminated, so that much steadier and quieter. running .will. be achieved .asa 01156.
  • a machine for forming and pressing sheet metal casing having oneend in contact with. the movable press tool, a wheel mountedon the "other end'of the lever with the levermounted eccentrically relative' to .theicenter axis of the last-mentioned wheel, a fulcrum support in the casing in contact with the-lever 'and which is in the form of a pressure pad, and means in the casing in contact with the last-mentioned wheel sothat when the motor 1 driven wheel rotates the last-mentioned wheel, the latter will oscillate the levenduedolhe; eccentric connection andthereby transmit,intermittent-power forces to 'the movable press tool with the 'means maintaining the tw wheels in contactwith eachother.
  • A. machine for forming and pressing sheet "metal andprofil'es comprising-a' casing; a stationary press to'ol the ram of the movablettool'.
  • a pres's' tool in theiorm of a ram mounted in thecasingto be movable therein to' cooperate with and movable toward the st'ationary press tool with short strokes, a motor-idriven wheel mounted in the casing, 21 :double J ended 1 ilever mounted. to float in the casing having one endfin': contact with themovable press tool, a wheel mounted on the other.
  • A. machine accordingfitoiclaim 1', in whic h wflat ,plate is provided securedainxthe? movable press tool to contact theend-of the lever in contact with thelmovable .tool. i l
  • a machine accordingatdclaim twin which-a flat plate is provided secur'edin the movable press tool t'ocon tact the end of the lever inucoritact with the movable tool, the flat plate be'ing supported'byand boiided lto a rubber cushion, the said rubber cushion being bonded to 1 "(Other refe re'ncesyon following page) UNITED STATES PATENTS Burgess June 6, 1916 Leckinger Apr. 1, 1919 Beach July 27, 1920 Sustarich June 12, 1923 Osborne Feb. 28, 1928 Klocke Nov. 11, 1930 McClean July 7, 1931 6 Rockenfield June 7, 1932 Blackmore et a1 July 13, 1943 Jackson Jan. 25, 1949 De Witt et a1 Feb. 9, 1954 FOREIGN PATENTS France Aug. 3, 1942 Germany Oct. 8, 1953

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Press Drives And Press Lines (AREA)
US679289A 1956-08-30 1957-08-20 Machines for forming and pressing sheet metal and profiles Expired - Lifetime US2924131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE560390X 1956-08-30

Publications (1)

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US2924131A true US2924131A (en) 1960-02-09

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US679289A Expired - Lifetime US2924131A (en) 1956-08-30 1957-08-20 Machines for forming and pressing sheet metal and profiles

Country Status (5)

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US (1) US2924131A (enrdf_load_stackoverflow)
BE (1) BE560390A (enrdf_load_stackoverflow)
CH (1) CH355755A (enrdf_load_stackoverflow)
GB (1) GB823796A (enrdf_load_stackoverflow)
NL (2) NL101258C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438543B2 (en) 2006-05-23 2013-05-07 International Business Machines Corporation Discovering multi-component software products

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208719A (en) * 1878-10-08 Improvement in power-hammers
US211596A (en) * 1879-01-21 Improvement in coin-presses
US211595A (en) * 1879-01-21 Improvement in coin-presses
US260176A (en) * 1882-06-27 durfee
US327999A (en) * 1885-10-13 Power-hammer
US1008442A (en) * 1911-02-27 1911-11-14 Nicholas King Turnbull Machine for forming wire-drawing dies or plates.
US1173214A (en) * 1915-04-29 1916-02-29 Champion Spark Plug Co Spark-plug-assembling machine.
US1186169A (en) * 1913-11-04 1916-06-06 William J Gustin Foot-power riveting-machine.
US1298741A (en) * 1918-03-19 1919-04-01 High Speed Hammer Company Inc Riveting-machine or hammer.
US1347490A (en) * 1916-06-16 1920-07-27 Charles P Beach Apparatus for rendering worn bushings usable
US1458667A (en) * 1921-10-06 1923-06-12 Sustarich Joseph Power hammer
US1660720A (en) * 1926-02-13 1928-02-28 Raymond S Osborne Riveter
US1781397A (en) * 1927-06-02 1930-11-11 Bliss E W Co Power press
US1813415A (en) * 1929-09-24 1931-07-07 Grant Mfg And Machine Company Riveting machine
US1862431A (en) * 1929-02-19 1932-06-07 High Speed Hammer Co Inc Helve operated hammer
FR876420A (fr) * 1940-03-07 1942-11-05 Leichtmetallbau Regensburg G M Appareil pour le refoulement des tôles
US2323971A (en) * 1940-11-28 1943-07-13 Gen Motors Corp Valve forging machine
US2459942A (en) * 1948-04-01 1949-01-25 Alfred Knudsen Reciprocating tool
DE892411C (de) * 1942-04-09 1953-10-08 Adolf Kreuser G M B H Gesenkanordnung zum Warmformen von Ringkoerpern kleineren Durchmessers, z. B. von Kugellagerringen
US2668590A (en) * 1946-03-28 1954-02-09 Auburn Fishhook Company Inc Fishhook making

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208719A (en) * 1878-10-08 Improvement in power-hammers
US211596A (en) * 1879-01-21 Improvement in coin-presses
US211595A (en) * 1879-01-21 Improvement in coin-presses
US260176A (en) * 1882-06-27 durfee
US327999A (en) * 1885-10-13 Power-hammer
US1008442A (en) * 1911-02-27 1911-11-14 Nicholas King Turnbull Machine for forming wire-drawing dies or plates.
US1186169A (en) * 1913-11-04 1916-06-06 William J Gustin Foot-power riveting-machine.
US1173214A (en) * 1915-04-29 1916-02-29 Champion Spark Plug Co Spark-plug-assembling machine.
US1347490A (en) * 1916-06-16 1920-07-27 Charles P Beach Apparatus for rendering worn bushings usable
US1298741A (en) * 1918-03-19 1919-04-01 High Speed Hammer Company Inc Riveting-machine or hammer.
US1458667A (en) * 1921-10-06 1923-06-12 Sustarich Joseph Power hammer
US1660720A (en) * 1926-02-13 1928-02-28 Raymond S Osborne Riveter
US1781397A (en) * 1927-06-02 1930-11-11 Bliss E W Co Power press
US1862431A (en) * 1929-02-19 1932-06-07 High Speed Hammer Co Inc Helve operated hammer
US1813415A (en) * 1929-09-24 1931-07-07 Grant Mfg And Machine Company Riveting machine
FR876420A (fr) * 1940-03-07 1942-11-05 Leichtmetallbau Regensburg G M Appareil pour le refoulement des tôles
US2323971A (en) * 1940-11-28 1943-07-13 Gen Motors Corp Valve forging machine
DE892411C (de) * 1942-04-09 1953-10-08 Adolf Kreuser G M B H Gesenkanordnung zum Warmformen von Ringkoerpern kleineren Durchmessers, z. B. von Kugellagerringen
US2668590A (en) * 1946-03-28 1954-02-09 Auburn Fishhook Company Inc Fishhook making
US2459942A (en) * 1948-04-01 1949-01-25 Alfred Knudsen Reciprocating tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438543B2 (en) 2006-05-23 2013-05-07 International Business Machines Corporation Discovering multi-component software products

Also Published As

Publication number Publication date
CH355755A (de) 1961-07-31
GB823796A (en) 1959-11-18
BE560390A (enrdf_load_stackoverflow)
NL211332A (enrdf_load_stackoverflow)
NL101258C (enrdf_load_stackoverflow)

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