US2857768A - Driving and control device - Google Patents

Driving and control device Download PDF

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Publication number
US2857768A
US2857768A US504921A US50492155A US2857768A US 2857768 A US2857768 A US 2857768A US 504921 A US504921 A US 504921A US 50492155 A US50492155 A US 50492155A US 2857768 A US2857768 A US 2857768A
Authority
US
United States
Prior art keywords
driving
ram
control device
eccentric
shaft
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
US504921A
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English (en)
Inventor
Rall Felix
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.)
Giesserei & Maschinenfabrik Os
Giesserei & Maschinenfabrik Osterwalder AG
Original Assignee
Giesserei & Maschinenfabrik Os
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 Giesserei & Maschinenfabrik Os filed Critical Giesserei & Maschinenfabrik Os
Application granted granted Critical
Publication of US2857768A publication Critical patent/US2857768A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/32—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with additional members comprising only pivoted links or arms
    • 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
    • B30B1/10—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 toggle mechanism
    • B30B1/106—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 toggle mechanism operated by another toggle mechanism
    • 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
    • B30B1/10—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 toggle mechanism
    • B30B1/14—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 toggle mechanism operated by cams, eccentrics, or cranks
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18176—Crank, pitman, lever, and slide

Definitions

  • the present invention relates to a driving and control device in machines for the chipless deformation of workpieces, and more particularly for toggle presses.
  • a further object of the present invention is the provision of such a driving and control device which is particularly adapted for use in combination with the reciprocating ram of a toggle press or the like.
  • a still further object of the invention is the provision of a driving and control device in connection with the reciprocating ram of a toggle press, which permits variation of the time slope of motion and the time slope of the pressure applied to said ram.
  • the driving and control device comprises a ram which is supported for longitudinal movement and is hingedly in operative connection with a member movable under the influence of two superposed reciprocating components of motion one of which in its time slope is variable with respect to the other component.
  • Fig. l is a longitudinal section through a driving and control device for a toggle press
  • Figs. 2 to 4 are diagrammatic views of the device in various positions of the ram.
  • Fig. 5 is a view showing the slidably mounted gear and its position with the other gears.
  • FIG. 1 shows the construction of the driving and control device.
  • a ram 1 supported for longitudinal movement is hingedly linked by means of a ram rod 2 with a toggle joint plate 3 which is pivotally mounted on a stationary abutment 4.
  • a link 5 is in hinged connection with the plate 3 at one end, while at the other end it is rotatably mounted on the pivot 6 of a connecting rod 7.
  • the rod 7 is connected with a crank pin 8 of a rotatably supported crankshaft 9 on which a gear 10 is firmly mounted.
  • An additional connecting rod 11, which is rotatably supported on an eccentric 12, is linked to the pivot 6 of the connecting rod 7.
  • the eccentric 12 is positively interconnected for rotation with a shaft 13, a gear 14 meshing with the gear 10 and provided with the same number of teeth being slidably mounted on the shaft 13.
  • the gear 14, moreover, meshes with a gear 15 which is splined to the rotor shaft 16 of an electromotor 17.
  • the ram 1 carries out its forward movement or its operative stroke according to the direction of rotation of the motor 17 indicated by the arrow 18.
  • the motion of the ram consists of two components, one of which is determined by the eccentricity of the crank pin 8 while the other component is determined by the eccentricity of the eccentric 12. These two motions may be added or subtracted depending on the mutual angular position of the two eccentric members, which position may be varied by rotating the one eccentric with respect to the other while the gears 14 and 10 are out of engagement. the stroke of the ram may be varied within certain limits.
  • Fig. 2 the position of the individual members of the device is shown at the rear reversing point of the ram position, while Fig. 3 shows the position of the members at the forward reversing point.
  • Fig. 4 the ram is shown in a position midway of its stroke length.
  • the parts shown in full line indicate the position of the latter when the center of the stroke length is passed during the return travel of the ram 1, while the parts shown by dash-and-dot lines show the position of the latter in the same point of the stroke length but during the forward travel of the ram.
  • the rotary angle 01. provides a measure of the period of time for the forwardand return travel of the ram through the front half of the stroke half at a constant speed of the gear 10.
  • a driving and control device comprising a ram arranged for longitudinal reciprocatory movement, a toggle joint plate pivotally mounted on a support and pivotally linked to said ram, a pivot pivotally linked with said toggle joint plate, two connecting rods hingedly 002;-
  • a driving and control device comprising a ram supported for longitudinal reciprocal movement, a toggle plate pivotally mounted on a supportand pivotally linked to said ram, two connecting rods pivotally connected to each other and an eccentric means driving each connecting rod, 2. link pivotally linking said toggle plate and said two connecting rods where they are pivoted to each other, and driving means for driving said eccentric means.
  • a driving and control device as claimed in claim 2 in which said driving means comprise a shaft on which one of said eccentric means is mounted, a crankshaft operatively connected to said shaft for rotation therewith, the eccentric on said crankshaft being a crank thereon, and a motor driving said shaft.
  • said driving means comprise a shaft on which one of said eccentric means is mounted, a crankshaft, a gear on said shaft, a gear on said crankshaft having the same number of teeth as the gear on said shaft and being meshed therewith, the gear on said shaft being slidable on said shaft, the eccentric on said crankshaft being a crank thereon, and a motor driving said shaft, whereby said gear on said shaft may be disengaged from said gear on said crankshaft and said crankshaft rotated with respect to said shaft for varying the position of one of two said connecting rods with respect to the other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Press Drives And Press Lines (AREA)
US504921A 1954-04-30 1955-04-29 Driving and control device Expired - Lifetime US2857768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2857768X 1954-04-30

Publications (1)

Publication Number Publication Date
US2857768A true US2857768A (en) 1958-10-28

Family

ID=4572337

Family Applications (1)

Application Number Title Priority Date Filing Date
US504921A Expired - Lifetime US2857768A (en) 1954-04-30 1955-04-29 Driving and control device

Country Status (5)

Country Link
US (1) US2857768A (pm)
BE (1) BE537110A (pm)
CH (1) CH325535A (pm)
DE (1) DE1153251B (pm)
FR (1) FR1121370A (pm)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174347A (en) * 1961-04-20 1965-03-23 May Pressenbau Ltd Toggle lever system
EP0008906A1 (en) * 1978-08-26 1980-03-19 McGlennon, Gordon Lawrence Load multiplying mechanisms
EP0531804A3 (en) * 1991-09-10 1993-05-26 Umformtechnik Erfurt Gmbh Drive for the ram of a mechanical press
EP1038658A3 (en) * 1999-03-24 2002-04-17 Kabushiki Kaisha Yamada Dobby Press machine
EP1043148A3 (en) * 1999-04-08 2002-04-17 Kabushiki Kaisha Yamada Dobby Press machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029999A1 (de) * 1980-08-08 1982-03-18 L. Schuler GmbH, 7320 Göppingen Kniegelenkantrieb fuer eine presse
DE3142679C2 (de) * 1981-10-28 1984-05-10 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Kurbelgetriebener Hebel-Gelenktrieb für Stössel von Pressen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US480737A (en) * 1892-08-16 Anton niemczyk
US1174801A (en) * 1915-01-07 1916-03-07 George E Babcock Variable-stroke internal-combustion engine.
US2035222A (en) * 1936-01-09 1936-03-24 Charles G Curtis Poppet valve gear for internal combustion or other engines
GB522792A (en) * 1937-12-17 1940-06-27 Albert Ris Improvements in and relating to driving gear in four-stroke cycle internal combustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424315A (en) * 1933-05-13 1935-02-19 Alexandre Felicien Hubert Arrangement of connecting rods for eccentric presses particularly adapted for drawing and stamping
GB573132A (en) * 1943-12-07 1945-11-07 Bliss E W Co Improvements in and relating to mechanical presses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US480737A (en) * 1892-08-16 Anton niemczyk
US1174801A (en) * 1915-01-07 1916-03-07 George E Babcock Variable-stroke internal-combustion engine.
US2035222A (en) * 1936-01-09 1936-03-24 Charles G Curtis Poppet valve gear for internal combustion or other engines
GB522792A (en) * 1937-12-17 1940-06-27 Albert Ris Improvements in and relating to driving gear in four-stroke cycle internal combustion engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174347A (en) * 1961-04-20 1965-03-23 May Pressenbau Ltd Toggle lever system
EP0008906A1 (en) * 1978-08-26 1980-03-19 McGlennon, Gordon Lawrence Load multiplying mechanisms
EP0531804A3 (en) * 1991-09-10 1993-05-26 Umformtechnik Erfurt Gmbh Drive for the ram of a mechanical press
EP1038658A3 (en) * 1999-03-24 2002-04-17 Kabushiki Kaisha Yamada Dobby Press machine
EP1043148A3 (en) * 1999-04-08 2002-04-17 Kabushiki Kaisha Yamada Dobby Press machine

Also Published As

Publication number Publication date
DE1153251B (de) 1963-08-22
FR1121370A (fr) 1956-08-13
BE537110A (pm)
CH325535A (de) 1957-11-15

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