US2364661A - Toggle press - Google Patents

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Publication number
US2364661A
US2364661A US466468A US46646842A US2364661A US 2364661 A US2364661 A US 2364661A US 466468 A US466468 A US 466468A US 46646842 A US46646842 A US 46646842A US 2364661 A US2364661 A US 2364661A
Authority
US
United States
Prior art keywords
press
crown
toggle
crankshaft
drive
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
US466468A
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English (en)
Inventor
Fredrich J Rode
Meredith R Hatch
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.)
EW Bliss Co Inc
Original Assignee
EW Bliss Co Inc
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
Priority to BE480645D priority Critical patent/BE480645A/xx
Application filed by EW Bliss Co Inc filed Critical EW Bliss Co Inc
Priority to US466468A priority patent/US2364661A/en
Priority to GB19809/44A priority patent/GB587630A/en
Application granted granted Critical
Publication of US2364661A publication Critical patent/US2364661A/en
Priority to FR950970D priority patent/FR950970A/fr
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
    • 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

  • This invention is directed to improvements in double action sheet metal presses of the front to back type, i. e. of the type wherein the axes of the driving mechanisms for the main or die slide and the blank clamping slide extend from the front to the back of the crown of the press as distinguished from presses wherein such mechanisms have axes extending from side to side of the press.
  • Front to back presses have been built heretofore incorporating a gear driving system of pinions and bull gears drivingly extending to the crank shaft of the press and with associated toggle mechanisms for operating the clamping slide all arranged within the front and back bearing walls of the crown casting. While operatively satisfactory, the assembly and repair replacement problems of presses of large capacity and size detracted from the advantages otherwise presented by such presses ,over the side to side type of press.
  • the general object of the present invention is the provision of a novel arrangement of the elements of the die slide drive and the clamping slide drive so that the toggle mechanism or mechanisms can be disposed on the outside of the main crown structure while remaining in efilcient cooperative relation to the die slide drive mechanism and whereby the fitt ng and assembly of the mechanical elements of the respective mechanisms can be effected independently.
  • a further object of our invention is to overcome the disadvantages of a combined gear drive and toggle drive heretofore cooperatively grouped in a crowded interdependent manner between the front and back walls or beams of the press crown structure.
  • a further object of the present invention is the provision of a novel arrangement of the toggle mechanisms of a front'to back double action sheet metal press on the outside of the front and back beams or walls of the crown structure whereby the distance between these walls may be substantially decreased over prior practices while permitting of a direct transmission of force to the press crank and the avoidance of the transmission of the main torque load through the main crankshaft bearings of the crown structure.
  • Fig. 1 is a front elevation of a sheet metal press embodying the features of the invention
  • Fig. 2 is a top view of the crown and associated mechanism as viewed with the top cover, the clutch and brake removed;
  • Fig. 3 is a cross-sectional elevation taken in two planes as indicated by the step back line 33 of Fi 2 and showing the crown, the die slide and the associated mechanisms for operating the die slide and work clamping slide;
  • Fig. 4 is a cross-sectional elevation of the upper part of the crown structure taken substantially along the line 4-4 of Fig. 1.
  • the press will be seen to comprise a base 6, spaced uprights mounted thereo and a crown 8 supported by these uprights and provided with a removable cover 9 on top.
  • Extending through the base, uprights, and crown are tie-rods 5 adapted to hold the above mentioned parts in place, and openings I 2 are provided in the crown (see Fig. 2) through which the tie-rods pass and on top of which they are fastened by nuts (not shown).
  • the crown is provided with bearings for the drive shaft and supports most of the drive transmitting members.
  • an important part of the drive transmitting elements is disposed on the outside of the main crown structure, a feature which greatly improves accessibility to such parts of the press.
  • the drive mechanism which will now be described with reference to Figs. 1, 2 and 4, comprises a flywheel l4 driven from a motor shaft l3 by means of an endless belt I5.
  • the flywheel is mounted for idle rotation on a shaft l6 which is journalled in bearings ill of conventional design, said bearings being secured to the crown as at IT.
  • Keyed to shaft iii are a clutch l9 and a brake 20.
  • the clutch shown is of the single plate dry disk type, but it will be understood that any other convenient clutch could be used as well.
  • the drive shaft has keyed thereon a pinion 23 which is in driving engagement with a gear 24.
  • the hub of this gear is mounted on one end of a sleeve 25 whose other end forms a pinion 26.
  • Both end portions of sleeve 25 having a cylindrical recess adapted to receive sleeveshaped bearings 21 and 28 respectively, the balanoe of which is disposed within journaled portions 30 of the crown.
  • Shaft 29 Carried by bearings 21 and 2' and the portion of sleeve 25 extending between said two bearings, is a shaft 29, which is one of the rocker shafts on which one pair of toggle levers forming the drive for the die slide are mounted. Shaft 29 extends from the front to the rear of the crown and carries one of the above mentioned toggle levers at, each end, the front toggle lever being shown in Fig. 1 and designated by 3
  • Shaft 34 also carries two pinions 36 and 31 which drive two bull gears 38 and 3! respectively, which are mounted on a stepped portion ll of the main crankshaft 4
  • the crank shaft as shown in Fig. 3 is a stepped shaft, the main portion III of which is journalled in sleeve bearings 42 carried by the crown casting.
  • the outermost stepped portion 43 serves to support a pivotally mounted crank 53 which is a driving connection to the toggle mechanism to be later described.
  • the crank cheeks of the main crank are shown at ll and the crank pin at 45, while 16 designates the eccentric strap whose free end is connected to a pin 41 which is carried by a member I! forming part of the die slide 54.
  • the effective length of the die slide is capable of adjustment by any suitable mechanism well known to the art such as that mechanism diagrammatically shown at 58, which is operated by a motor 39.
  • the motor 9 drives the worm shaft 50a and the worm 50b disposed in meshing relation with the worm wheel
  • is carried by a block 52 which is in threaded engagement with the member 48.
  • is provided with an extension 55 which forms a circular trough for receiving oil that may drip down from the bull gears and may be drained at 55.
  • the main crankshaft III is provided at each end with a stepped portion 43 for the mounting of a small crank 53 that is linked at 5
  • This member is mounted for up and down movement in ways SI and, at its upper end, has pivotally connected thereto links 2, 3 making connection with toggle members 3
  • toggle levers are joumalled at their other ends to connecting rods 65 and 66 which in turn are pivoted at their other ends to adjustment screws BI and 69 located within bosses II and 'Il formed on the outside of slide II.
  • the screws are arranged to cooperate with double lock nuts 13, ll, respectively, which in their locking position abut on shoulders of the bosses II.
  • double lock nuts 13, ll, respectively For adjustment of the screws one of the lock nuts is loosened whereupon the other-may be turned, thereby making screw $3 move up or down respectively and changing the stroke of the clamping slide to greater or smaller length as required.
  • the toggle mechanism comprises two toggles on the front wall of the crown and two on the back wall, ,all of which work in unison, though they may be individually adjusted by the screw and double lock nut mechanism just described.
  • the screw mechanism is used to adjust the clamping slide to the height of the die space, thus insuring a perfect cooperation between the respective parts of the double action press.
  • a sheet metal working press of the double action front to back type the combination of a gear train arranged to drive a main crankshaft, a die slide driven by the crankshaft, dual toggle mechanism for operating the work clamping slide of the press including two rocker shafts rotatably supporting members of said gear train, and mean interconnecting said crankshaft and said rocker shafts for imparting a rocking movement to said rocker shafts to thereby actuate said toggle mechanism.
  • a crown structure comprising a front and a back beam, '12, main crankshaft Journalled in said beams, a gear train disposed between said beams to drive the crankshaft, toggle mechanism disposed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechanisms including rocker shafts extending through said front and back beams of the crown structure and serving to rotatably support certain of the clamping slide of the press, said toggle mechanisms including two rocker shafts extending through said front and back beams of the crown structure and serving to rotatably support certain of the members of said gear train, and means including an auxiliary crank mounted at each end of said main crankshaft, for imparting a rocking movement tosaid rocker shafts.
  • a crown structure comprising a front and back beam, a main crankshaft journalled in saidbeams, a gear train disposed between said beams to drive the crankshaft, dual toggle mechanism disposed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechanisms including two rocker shafts extending through said front and back beams of the crown the press, and having structure and serving to rotatably support certain of the members of said gear train, and means mounted on the crankshaft but remote from the crank for imparting a rocking movement to said rocker shafts.
  • a double action sheet metal press of the front to back gear and toggle drive type having the gear train for driving the crankshaft of the die slide of the press arranged entirely between the front and back beams of the crown-structure of the press and the toggle mechanisms for driving the work clamping slide arranged on the outside of the front and back beam structure of the crown, said toggle mechanisms including toggle rocker shafts extending through the said crown beams and serving as supports for members of the gear train, and means connected to said crankshaft and to said rocker shafts for imparting a rocking movement to said rocker shafts to thereby actuate said toggle mechanisms.
  • a double action sheet metal press of the front to back gear and toggle drive type having the gear train for driving the main crankshaft of the die slide of the press arranged entirely between the front and back beams of the crown structure of the press and having dual toggle mechanisms for driving the work clamping slide arranged on the outside of each of the front and back beam structures of the crown, said toggle mechanisms including two parallel toggle rocker shafts extending through the said crown beams and serving as supports for members of the gear train, and means including two more cranks, one at each end of the main crankshaft for imbeam,
  • a crown structure comprising a front and back beam, a main crankshaft joumalled in said beams, a gear train disposed between said beams to drive the crankshaft, toggle mechanism disposed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechanisms including two rocker shafts extending through said front and back beams of the crown structure, one of said rocker shafts having rotatably mounted thereon an intermediate gear driven from a pinion on the main drive shaft of furthermore rotatably mounted thereon a pinion for driving a second intermediate gear.
  • a crown structure comprising a front and back a main crankshaft journalled in said beams, a gear train disposed between said beams to drive the crankshaft, toggle mechanism disposed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechanism including two rocker shafts extending through said front and back beams of the crown structure, one of said rocker shafts having rotably mounted thereon an intermediate gear driven from a pinion on the main drive shaft of the press, and having furthermore rotatably mounted thereon a pinion for driving a second intermediate gear while the second" rocker shaft is adapted rotatably to carry a pair of pinions serving for the drive of a pair of bull gears, said bull gears being mounted in driving connection with the cheeks of said main crankshaft.
  • a crown structure comprising a front and a back beam, a main crankshaft journalled in said beams, a gear train disposed between said beams to drive the crankshaft, toggle mechanism disposed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechanisms including two rocker shafts extending through said front and back beams of the crown structure, one oil said rocker shafts having rotatably mounted thereon an intermediate gear driven from a pinion on the main drive shaft of the press, and having furthermore rotatably mounted thereon a pinion for driving a second intermediate gear, and means mounted on said crankshaft but remote from the crank for imparting a rocking movement to said rocker shafts.
  • a crown structure comprising a front and a back :beam, a main crankshaft journalled in said beams, a gear train disposed between said beams to drive the crankshaft, toggle mechanism dis posed to the front and rear of said beams respectively and adapted to operate the work clamping slide of the press, said toggle mechaintermediate gear while the second rocker shaft i adapted rotatably to carry a pair of pinions serving for the drive of a pair of bull gears, said ,bull gears being mounted in driving connection with said main crankshaft, and means mounted on said crankshaft but remote from the crank for imparting a rocking movement to said rocker shafts.
  • a crown structure comprising a front ing toggle rocker shafts extending through the said crown beams, one of said rocker shafts having rotatably mounted thereon an intermediate gear driven from a pinion on the main drive shaft of the press and having furthermore rotatably mounted thereon a pinion for driving a second intermediate gear while the second rocker shaft is adapted rotatably to carry a :pair of pinions serving for the drive of a pair of bull gears, said bull gears being mounted in driving connection with said main crankshaft, and means mounted on said crankshaft but remote from the crank for imparting a rocking movement to said rocker shafts.
  • a front to back rocker shaft arrangement extending through the crown of the 'press and operatively connecting a toggle mechanism disposed at the front of the crown to a toggle mechanism disposed at the back of the crown and a gear train drive for the die slide of the press disposed within the crown with certain of the gear elements of said train rotatively mounted upon said rocker shaft arrangement.
  • a front to back rocker shaft arrangement comprising two rocker shafts extending through the crown of the press and operatively connecting a dual toggle mechanism disposed at the front of the crown and a dual toggle mechanism disposed at the back of the crown, said toggle mechanism serving to drive the work cl ping slide and a gear train drive for the die sli e of the press disposed within the crown with certain of the gear elements of said train rotatively mounted upon said rocker shaft arrangement.
  • a front to back rocker shaft arrangement comprising two shafts extending through the crown of the press and operatively connecting a dual toggle mechanism disposed 0n the outside of the front of the crown and a. dual toggle mechanism disposed on the outside of the back of the crown, said toggle mechanisms serving to drive the work clamping slide and a gear train drive for the die slide of the press including the main crankshaft disposed within the crown with certain of said gear elements rotatively mounted upon said rocker shaft arrangement and meansrnounted on said crankshaft for imparting a rocking movement through said toggle mechanisms to said rocker shafts.
  • a front to back rocker shaft arrangement comprising two shafts extending through the crown of the press and operatively connecting a dual toggle mechanism disposed on the outside of the front of the crown and a dual toggle mechanism disposed on the outside of the back of the crown, said toggle mechanisms serving to drive the work clamping slide and a gear train drive for the die slide of the press including the main crankshaft disposed within the crown with certain of said gear elements rotatively mounted upon said rocker shaft arrangement, and means including an auxiliary crankshaft mounted at each end of said main crankshaft for imparting a rocking movement to said rocker shafts.
  • crankshaft for operating the die slide of the press extending from front to back of the press and disposed centrally between the sides of the press, a pair of rocker shafts extending from front to back of the press and having toggle mechanisms at their ends for driving the work clamping slide of the press, a gear train for driving said crankshaft, and means driven by said crankshaft for actuating said toggle mechanisms.
  • a crown structure having a front and a back beam, a crankshaft for operating the die slide of the press extending from front to rear of the press and disposed centrally between the sides of the press, said crankshaft having a portion projecting forwardly of the front beam and a portion projecting rearwardly of the back beam, a pair of rocker shafts journalled in said beams and having iportions projecting forwardly of the front beam and rearwardly of the back beam, toggle mechanisms including levers mounted on said projecting portions of the rocker shafts for driving the work clamping slide of the press, means interconnecting said projecting portions of the crankshaft with said levers for rocking said shafts through said levers, and a gear train disposed between the front and back beams for driving said crankshaft, said train including gears revolubly mounted on said rocker shafts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
US466468A 1942-11-21 1942-11-21 Toggle press Expired - Lifetime US2364661A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE480645D BE480645A (fr) 1942-11-21
US466468A US2364661A (en) 1942-11-21 1942-11-21 Toggle press
GB19809/44A GB587630A (en) 1942-11-21 1944-10-13 Improvements in presses for working sheet metal
FR950970D FR950970A (fr) 1942-11-21 1947-08-04 Presse à genouillère

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US466468A US2364661A (en) 1942-11-21 1942-11-21 Toggle press

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Publication Number Publication Date
US2364661A true US2364661A (en) 1944-12-12

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US466468A Expired - Lifetime US2364661A (en) 1942-11-21 1942-11-21 Toggle press

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US (1) US2364661A (fr)
BE (1) BE480645A (fr)
FR (1) FR950970A (fr)
GB (1) GB587630A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494921A (en) * 1950-01-17 Sheet metal working press
US2579078A (en) * 1947-04-26 1951-12-18 Clearing Machine Corp Metal drawing press
US2644417A (en) * 1950-12-21 1953-07-07 Danly Mach Specialties Inc High-speed double-action press
US2670524A (en) * 1947-12-02 1954-03-02 Frank Joseph James Machine for applying barrel fasteners to sausage casings
US2693157A (en) * 1950-12-21 1954-11-02 Danly Mach Specialties Inc High speed triple action press
US3052200A (en) * 1956-12-05 1962-09-04 Cleveland Crane Eng Double action draw press
EP0546265A1 (fr) * 1991-12-11 1993-06-16 Bruderer Ag Presse polyçonneuse à arbre unique
CN111829707A (zh) * 2020-08-11 2020-10-27 中国建筑第八工程局有限公司 保温钉按压检测装置及使用方法

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494921A (en) * 1950-01-17 Sheet metal working press
US2579078A (en) * 1947-04-26 1951-12-18 Clearing Machine Corp Metal drawing press
US2670524A (en) * 1947-12-02 1954-03-02 Frank Joseph James Machine for applying barrel fasteners to sausage casings
US2644417A (en) * 1950-12-21 1953-07-07 Danly Mach Specialties Inc High-speed double-action press
US2693157A (en) * 1950-12-21 1954-11-02 Danly Mach Specialties Inc High speed triple action press
US3052200A (en) * 1956-12-05 1962-09-04 Cleveland Crane Eng Double action draw press
EP0546265A1 (fr) * 1991-12-11 1993-06-16 Bruderer Ag Presse polyçonneuse à arbre unique
US5317893A (en) * 1991-12-11 1994-06-07 Bruderer Ag Single shaft punch press
CH684394A5 (de) * 1991-12-11 1994-09-15 Bruderer Ag Einwellen-Stanzpresse.
CN111829707A (zh) * 2020-08-11 2020-10-27 中国建筑第八工程局有限公司 保温钉按压检测装置及使用方法

Also Published As

Publication number Publication date
BE480645A (fr)
FR950970A (fr) 1949-10-12
GB587630A (en) 1947-05-01

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