US3485080A - Running press feed - Google Patents

Running press feed Download PDF

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Publication number
US3485080A
US3485080A US649580A US3485080DA US3485080A US 3485080 A US3485080 A US 3485080A US 649580 A US649580 A US 649580A US 3485080D A US3485080D A US 3485080DA US 3485080 A US3485080 A US 3485080A
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US
United States
Prior art keywords
slide
press
slideway
bracket
crank arm
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
US649580A
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English (en)
Inventor
Albert F Lehmann
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Individual
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Individual
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Filing date
Publication date
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Publication of US3485080A publication Critical patent/US3485080A/en
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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • 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
    • Y10T74/21—Elements
    • Y10T74/2173—Cranks and wrist pins
    • Y10T74/2179—Adjustable

Definitions

  • FIG. 2 A. F. LEHMANN RUNNING PRESS FEED Dec. 23, 196 9 3 Sheets-Sheec 1 Filed June 28, 1967 FIG. 2
  • the press disclosed herein incorporates an output shaft that is commonly known as the shaft extension of the press which rotates in synchronism to the operation of the press.
  • a bracket is fixed to this shaft and provides a slideway in which a slide is mounted.
  • a crank arm is rotatably mounted on the slide and extends to the sheet metal feed rolls or other auxiliary devices that are operated in synchronism with the press.
  • Means are provided for translating the slide along the slideway in order to adjust the stroke length. This means includes power operated means on the crank arm that can be operated during operation of the press.
  • Means are provided for locking the slide in any adjusted position and includes power operated means on the crank arm which can be operated during operation of the press.
  • This invention relates to presses and particularly to presses that are utilized for stamping sheet metal.
  • Among the objects of the present invention are to provide a press wherein adjustment of the eccentric auxiliary drive for feed rolls and the like can be adjusted quickly during operation of the press from an area adjacent the floor without any need for workers to climb scaffolds or interrupt the operation of the press; which structure is relatively safe; and low in cost.
  • the press disclosed herein incorporates an output shaft that is commonly known as the shaft extension of the press which rotates in synchronism to the operation of the press.
  • a bracket is fixed to this shaft and provides a slideway in which a slide is mounted.
  • a crank arm is rotatably mounted on the slide and extends to the sheet metal feed rolls or other auxiliary devices that are operated in synchronism with the press.
  • Means are provided for translating the slide along the slideway in order to adjust the stroke length. This means includes power operated means on the crank arm that can be operated during operation of the press.
  • Means are provided for locking the slide in any adjusted position and includes power operated means on the crank arm which can be operated during operation of the press.
  • FIG. 1 is a partly diagrammatic perspective view of a press embodying the invention.
  • FIG. 2 is an elevational view of a portion of the press shown in FIG. 1.
  • FIG. 3 is a side elevational view of a portion of the press shown in FIG. 2.
  • FIG. 4 is a fragmentary sectional view on an enlarged scale taken along the line 44 in FIG. 2.
  • FIG. 5 is a fragmentary sectional view taken along the line 5-5 in FIG. 4.
  • press 10 is of conventional construction and includes a fixed platen 11 and a movable platen 12 that is reciprocated toward the fixed platen 11 in timed relationship to the feeding of sheet metal to the press.
  • a press is well known and includes an output shaft 13 on the upper end thereof which is commonly known as the shaft extension on which shaft 13 is rotated in timed relationship to the movement of the movable platen 12. It is conventional to have a power take-off operated by the shaft 13 for operating the feed rolls for feeding the sheet metal or for operating other auxiliary devices.
  • a plate 14 is fixed on the shaft 13 and supports a bracket 16.
  • the bracket 16 defines a slideway 17 (FIG. 4) in which a slide 18 can be moved.
  • a crank arm 20 is rotatably mounted on the slide 18 by bearings 21.
  • a crank rod 22 is fixed to the crank arm by a pin 23.
  • the lower end of the crank arm is formed with a rack 24 that operates a pinion 25 which, in turn, is connected by mechanism (not shown) to the feed rolls for feeding sheet metal to the press.
  • a lead screw 25 is mounted in the bracket 16 in fixed relation thereto by means of a nut 26.
  • a worm nut 27 is threaded on the lead screw 25 and journalled within the slide 18 by thrust bearings 28, 29 and a retainer plate 30.
  • the periphery of the worm nut 27 is formed with teeth that are meshed with a worm gear 31 that forms a part of a member 32 which is journalled in the slide 18 with its axis at a right angle to the axis of the slideway 17.
  • Member 32 is locked to slide 18 by a retainer pin 32' that extends into an opening therein.
  • Retainer pin 32 is supported by a locking ring 32a which is fastened to rod 52.
  • a bevel gear 33 is mounted on the end of the member 32 opposite the worm gear 31 and is retained thereon by a collar 34.
  • Bevel gear 33 meshes with a bevel pinion 35 which is fixed to the shaft 36 that, in turn, is rotatably mounted by bearings in an extension 37.
  • the extension 37 is fixed in a housing 38 mounted on the crank arm 20.
  • a rotary fluid motor 39 is mounted on the extension 37 and has its shaft 40 keyed to a collar 41v that is, in turn, keyed to the shaft 36 so that when fluid is sup plied to the motor 39, the bevel gears 35, 33 are rotated and, in turn, rotate the worm gear 31, worm gear nut 27 to translate the slide 18 along the slideway 17
  • Means are provided for locking the slide in any adjusted position and includes wedge blocks 45 which are yieldingly urged transversely inwardly by springs 46 interposed in slots in the blocks 45 and abutting against fixed stop 47.
  • Each wedge block 45 includes a surface 48 that contacts a complementary surface 49 on the bracket 16 as well as a surface 50 that contacts the complementary surface 51 on the slide 18.
  • Springs 46 yieldingly urge blocks 45 into camming or locking relation with respect 3 to the bracket 16 and slide 18 to hold the slide in position.
  • a rod 52 is mounted within the member 32 and concentrically therewith, One end of the rod is adapted to engage a ball 53 that, in turn, contacts inclined inner ends 54 on the wedge blocks 45.
  • the other end 55 of rod 52 is axially fixed to a piston 56 by a threaded retainer pin 57 on which a nut is threaded.
  • a thrust bearing 57 is interposed between the end 55 of the rod 52 and piston 56.
  • a spring 52 is interposed between the member 32 and the enlarged end 55 of the rod 52.
  • Piston 56 operates within an integral cylinder 57 on the end of housing 38.
  • a diaphragm 53 forms the piston seal.
  • valves 60 shown diagrammatically, which are positioned adjacent the floor in the area Where they are readily accessible to the operator without the use of scaffolding, ladders or similar devices.
  • crank arm rotatably mounted on said slide
  • bracket means on said bracket interacting with said member so that upon rotation of said member, said slide is translated along said bracket.
  • said member which is rotatably mounted in said slide having a worm gear fixed thereon and engaging said Worm gear nut.
  • each said wedge member having surfaces adapted to engage surfaces on said bracket and slideway and operable to lock said slideway in position
  • said power operated member comprises a linear fluid motor on said crank arm operable to operate said last-mentioned member.
  • crank arm rotatably mounted on said slide
  • said means for translating said slide comprising a member rotatably mounted in said slide about the center of said crank arm,
  • said member which is rotatably mounted in said slide having a worm gear fixed thereon and engaging said worm gear nut
  • said power unit on said crank arm being operatively connected to said bevel pinion I for rotating said pinion
  • said power operated means for actuating said translating means comprises a fluid operated motor fixed on said crank arm,
  • each of said wedge member having surfaces adapted to engage surfaces on said bracket and slideway and operable to lock said slideway in position
  • said power operated member comprising a linear fluid motor on said crank arm operable to operate said last-mentioned member.
  • crank arm rotatably mounted on said slide
  • said member which is rotatably mounted in said slide having a worm gear fixed thereon and engaging said Worm gear nut.
  • said means for locking said slide comprises a wedge member, spring means yieldingly urging said wedge member into engagement with portions of said bracket and said slide and thereby locking said slide relative to said bracket,
  • each said wedge member having surfaces adapted to engage surfaces on said bracket and slideway and operable to lock said slideway in position
  • said power operated member comprises a linear fluid motor on said crank arm operable to operate said last-mentioned member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
US649580A 1967-06-28 1967-06-28 Running press feed Expired - Lifetime US3485080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64958067A 1967-06-28 1967-06-28

Publications (1)

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US3485080A true US3485080A (en) 1969-12-23

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US649580A Expired - Lifetime US3485080A (en) 1967-06-28 1967-06-28 Running press feed

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US (1) US3485080A (de)
DE (1) DE1752467C3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057311A2 (de) * 1981-01-30 1982-08-11 The Minster Machine Company Vorrichtung zur Einstellung der Vorschublänge für eine Presse
US5031440A (en) * 1989-02-15 1991-07-16 Enami Seiki Mfg., Co. Ltd. Apparatus for forming long plate member

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216277A (en) * 1963-04-22 1965-11-09 Alvin F Groll Crank throw adjusting means
US3242768A (en) * 1964-06-11 1966-03-29 Niagara Machine & Tool Works Adjustable crank mechanism
US3359825A (en) * 1966-02-17 1967-12-26 Littell Machine Co F J Motorized micro adjustment for roll feeds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216277A (en) * 1963-04-22 1965-11-09 Alvin F Groll Crank throw adjusting means
US3242768A (en) * 1964-06-11 1966-03-29 Niagara Machine & Tool Works Adjustable crank mechanism
US3359825A (en) * 1966-02-17 1967-12-26 Littell Machine Co F J Motorized micro adjustment for roll feeds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057311A2 (de) * 1981-01-30 1982-08-11 The Minster Machine Company Vorrichtung zur Einstellung der Vorschublänge für eine Presse
US4350090A (en) * 1981-01-30 1982-09-21 The Minster Machine Company Motorized and micro feed length adjustment for a press feed
EP0057311A3 (en) * 1981-01-30 1983-05-25 The Minster Machine Company Feed length adjustment mechanism for a press feed
US5031440A (en) * 1989-02-15 1991-07-16 Enami Seiki Mfg., Co. Ltd. Apparatus for forming long plate member

Also Published As

Publication number Publication date
DE1752467B2 (de) 1974-07-04
DE1752467A1 (de) 1971-09-02
DE1752467C3 (de) 1975-02-20

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