US3606784A - Panel straightening machine for thin gauge sheet metal - Google Patents

Panel straightening machine for thin gauge sheet metal Download PDF

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Publication number
US3606784A
US3606784A US816601A US3606784DA US3606784A US 3606784 A US3606784 A US 3606784A US 816601 A US816601 A US 816601A US 3606784D A US3606784D A US 3606784DA US 3606784 A US3606784 A US 3606784A
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United States
Prior art keywords
rolls
straightening
chocks
chock
machine
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
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US816601A
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English (en)
Inventor
Walter Schluter
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.)
WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
WILHELMSBURGER MASCHINENFABRIK
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WILHELMSBURGER MASCHINENFABRIK
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Publication of US3606784A publication Critical patent/US3606784A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • a panel straightening machine for thin gauge sheet metal which comprises groups of upper straightening rolls mounted in two chocks tiltable about a common hinge at the bottom ends of their neighbouring sides, whereas the top of each chock is hingeably attached to two and preferably at least four press rods permitting the chocks to be adjusted by deiiection about their common hinge.
  • This invention relates to a panel straightening machine for thin gauge sheet metal comprising groups of bottom and upper straightening rolls mounted in tiltable chocks.
  • the purpose of such a machine is to submit sheet metal panels that are not perfectly flat, such as panels that are buckled, to a thorough working by the straightening rolls to remove internal stress and at the same time to iiatten the buckles and to straighten the panels by means of the straightening rolls, principally the final group of rolls.
  • the upper straightening rolls are mounted in three chocks, each carrying a like number of rolls, the two outer chocks and their straightening rolls being independently tiltable about a hinge on the chock in the middle, whereas the latter chock is elevationally so adjustable that the resultant symmetry of the arrangement permits a panel that is to be straightened to be fed into either end of the machine and to leave the machine at the other end.
  • the present invention provides a panel straightening machine for thin gauge sheet metal which comprises groups of upper straightening rolls mounted in two chocks tiltable about a common hinge at the bottom ends of their neighbouring sides, whereas the top' of each chock is hingeably attached to two and preferably at least four press rods permitting the chocks to be adjusted by deflection about their common hinge.
  • the proposed arrangement has the advantage that the degree of working of the metal is variable by adjustment of the relative straightening rolls without significantly affecting the straightening effect, since the required iiatness of the panels, which is substantially governed by the position of the nal roll triplet, remains substantially unaffected by the degree of working of the panel in the machine.
  • This advantage is more especially secured if the produced longitudinal axis of the last press rod on the delivery side of the machine passes through the axis of rotation of the bottom straightening roll of the final roll triplet, since in such a case the position of the rolls forming this triplet is not relatively changed by the second chock being tilted about its common hinge with the first chock for the purpose of increasing the working effect.
  • the proposed arrangement can be further simplified by hingeably attaching the neighboring ends of the two chocks to a common screw-down jack in the centre by interposed press rods and the outer ends of the two chocks through interposed press rods to screw-down jacks that are independently controllable.
  • any adjustment of the panel working rolls on one of the chocks necessarily entails a similar adjustment of the corresponding rolls on the other chock.
  • the two press rods for attaching the neighbouring ends of the chocks to a common screw-down jack in the centre may be hingeably attached to the latter through an interposed balancing rocker arm and the produced longitudinal axis of the central screw-down jack may be arranged to pass through the common hinge of the two chocks.
  • another desirable feature of the invention consists in slidably guiding the side of the rst chock on the panel entry side of the machine so that it is capable of movement in the elevational and in the panel entry direction, whereas the panel delivery side of the other chock may be hingeably attached to a slipper member which is only elevationally slidably movable.
  • the illustrated machine comprises a machine frame 1 consisting of lateral columns 2 connected at the top by a crosshead 3.
  • a crosshead 3- Mounted in the crosshead 3- are screwdown jacks of which three, marked 7, 8 and 9, are shown in the drawing, and which are elevationally adjustable in the direction indicated by double-headed arrows 4, and 6.
  • Each of these jacks carries a guide block 10 which is slidable between stationary sideways 11 and 11' and prevents the jacks from being laterally displaced.
  • Three further screw-down jacks are obscured by the jacks shown in the drawing since they are located exactly behind the latter.
  • each of the jacks 7, 8 and 9 ⁇ is provided with threads 12 which work in a wormwheel 13 adapted to be rotated in either hand by a worm 14 to raise or lower the jack.
  • the three worms 14 and hence the three jacks 7, 8 and 9 ⁇ are independently operable by means not shown in the drawing.
  • the bottom ends of the jacks 7, 8 and 9 or their guide members 10 are attached to press rods. More particularly the jack 7 is associated with one press rod 15, ⁇ whereas the jack 8 is associated with two press rods 16 and 17, both attached to a balancing rocker 18 which is itself pivotably attached at 19 to the guide member 10.
  • the third jack 9 is again associated with only one press rod 44. Behind this row of press rods 15, 16, 17 and 44 is a second row of press rods which cannot be seen in the drawing since they are disposed in an identical manner to the front row of press rods and associated with the second above-mentioned row of screwdown jacks.
  • the press rods 15, 16, 17 and 44 and the corresponding press rods in the back row are associated in pairs and each two pairs carry one chock 20 respectively 21, in which the driven upper straightening rolls are mounted.
  • the rst chock 20 which is suspended from the press rods and 16 carries the straightening rolls marked 22, 23 and 24 of an upper bank of rolls
  • the second chock 21 suspended from the press rods 17 and I44 carries a bank of straightening rolls 26, 27, 28, 29, 30 and 31.
  • the straightening roll 25 is so tted between both chocks and 21 that it forms a pivot about which the two chocks can tilt.
  • Below the upper bank of straightening rolls 22 to 31, one bottom roll is mounted between each two neighbouring rolls of the upper bank, these bottom rolls being marked 32 to 40.
  • the bottom bank of straightening rolls is so aligned that the roll 40 which is the bottom straightening roll in a linal set comprising the triplet 30, 31 and 40 is located with its axis 41 approximately in the line of thrust 42 of
  • the upper and bottom banks of straightening rolls 22 to 40 are supported by backing rolls generally indicated by the reference numeral 45.
  • the chocks 20 and 21 containing the upper straightening rolls 22 to 31 are guided in two slideways 46 and 47 provided in the columns 2 of the machine frame 1.
  • the outside end of the rst chock 20 is so guided by the slideway 46 that when tilting about the axis of the straightening roll and when being raised and lowered by the jacks 7 and 8 it can slide up and down the slideway 46, as indicated by the double-headed arrow 49, and at the same time shift horizontally, as indicated by the double-headed arrow 48.
  • the second chock 21 is so guided on the delivery side of the machine by a slipper member 51 working in the slideway 47 that on this side of the machine the chock can move only vertically up and down as indicated by the double-headed arrow 50 and possibly slightly turn on the hinge at 52.
  • the illustrated machine that has above been described permits the entry wedge, i.e. the gap between the leading upper straightening rolls 22 and 23 and the bottom 4 straightening roll 32 to be so adjusted by raising the leading end of the lrst chock 20 on the entry side of the machine that panels of widely differing gauge can run into the straightening machine in the direction of arrow 153 without having to overcome major resistance.
  • the jack 9 and possibly the jack 8 may be adjusted and the gap between the upper end rolls 30 and 31 and the bottom end roll 40 so chosen that the panel leaving the machine will be satisfactorily straightened, irrespectively of its gauge. Moreover, by adjusting the central jack 8 the degree of working experienced by the panel can be adapted to existing requirements without changing the entry 'wedge or the position of the rolls in the iinal set of rolls.
  • a panel straightening machine for thin gauge sheet metal comprising (a) two rows of cooperating straightening rolls between which a work sheet enters at one end and is discharged at the opposite end, each row containing a plurality of rolls,
  • (d) means to pivotally adjust each of said chocks to regulate the distance between the rolls of said one row on either side of said common axis and the other of said rows of rolls, the adjustment of one chock being made without effecting the adjustment of the other chock,
  • a panel straightening machine for thin gauge sheet metal comprising (a) two rows of cooperating straightening rolls between which a work sheet enters at one end and is discharged at the opposite end, each row containing a plurality of rolls,
  • (d) means to pivotally adjust each of said chocks to regulate the distance between the rolls of said one row on either side of said common axis and the other of said rows of rolls, the adjustment of one chock being made without effecting the adjustment of the other chock, and
  • a panel straightening machine as claimed in claim 2 wherein said means for pivotally adjusting each of said chocks and said further means for adjusting the adjacent ends of said chocks comprises a plurality of pressed rods pivotally secured to said chocks at the adjacent ends and to the entry and discharge ends respectively, the press rods at the adjacent ends of the chocks being connected to a common central screw jack and the press rods at the entry and discharge ends of the respective chocks each being connected to an outer screw jack.
  • a panel straightening machine as claimed in claim 3 further comprising a balancing rocker arm interposed between the press rod pivotally connected to the adjacent ends of the two chocks and said common central screw jack, the thrust of the common central screw jack passing through said common axis.
  • a panel straightening machine for thin gauge sheet metal comprising (a) two rows of cooperating straightening rolls between which a work sheet enters at one end and is discharged at the opposite end, each row containing a plurality of rolls,
  • (d) means to pivotally adjust each of said chocks to regulate the distance between the rolls of said one row on either side of said common axis and the other of -said rows of rolls, the adjustment of one chock being made without effecting the adjustment of the other chock,
  • a panel straightening machine for thin gauge sheet 10 metal comprising (a) two rows of cooperating straightening rolls between which a work sheet enters at one end and vis discharged at the opposite end, each row containing a plurality of rolls,
  • (d) means to pivotally adjust each of said chocks to regulate the distance between the rolls of said one row on either side of said common axis and the other of said rows of rolls, the adjustment of one chock being made 'without effecting the adjustment of the other chock,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
US816601A 1968-04-20 1969-04-16 Panel straightening machine for thin gauge sheet metal Expired - Lifetime US3606784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1752211A DE1752211C3 (de) 1968-04-20 1968-04-20 Feinblechrichtmaschine

Publications (1)

Publication Number Publication Date
US3606784A true US3606784A (en) 1971-09-21

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ID=5692678

Family Applications (1)

Application Number Title Priority Date Filing Date
US816601A Expired - Lifetime US3606784A (en) 1968-04-20 1969-04-16 Panel straightening machine for thin gauge sheet metal

Country Status (4)

Country Link
US (1) US3606784A (fr)
DE (1) DE1752211C3 (fr)
FR (1) FR2006609A1 (fr)
GB (1) GB1260938A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701274A (en) * 1970-11-09 1972-10-31 Sutton Eng Co Roller leveler with adjustable flattening section
JPS50149574A (fr) * 1974-05-22 1975-11-29
JPS5339962A (en) * 1976-09-24 1978-04-12 Kubota Ltd Method of straightening pipe opening part
JPS5360362A (en) * 1976-11-09 1978-05-30 Mesta Machine Co Process for stratghtening thin and long work and machine for straightening the same
JPS5429867A (en) * 1977-08-10 1979-03-06 Hitachi Ltd Roller leveler
US4144731A (en) * 1977-04-16 1979-03-20 Irma Ungerer Geb. Dollinger Machine for flattening sheet metal
US4454738A (en) * 1981-06-29 1984-06-19 The Paxson Machine Company Roller leveler and method of operating same
US4633697A (en) * 1985-08-16 1987-01-06 Mesta Engineering Company Plate levelling machine
US5189896A (en) * 1992-03-02 1993-03-02 Mesta International Single stand roller leveller for heavy plate
US20080011036A1 (en) * 2006-07-13 2008-01-17 Buta John R Cassette roller leveler with common back-up rolls

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1120753B (it) * 1975-12-09 1986-03-26 Mesta Machine Co Metodo e apparecchiatura per operazioni di raddrizzatura
DE2647381B1 (de) * 1976-10-20 1978-04-06 Ungerer Irma Richtmaschine
DE2704684B2 (de) * 1977-02-04 1981-02-26 Horst Zerhoch Vorrichtungs- Und Maschinenbau Kg, 7573 Sinzheim Richtmaschine zum Richten von Blechen und Flachmaterialien
FR2379330A1 (fr) * 1977-02-04 1978-09-01 Zerhoch Vorrichtungs Masch Machine a dresser les toles et materiaux plats
EP0260361B1 (fr) * 1986-09-19 1992-04-15 The Monarch Machine Tool Company Machine à dresser
DE3604807A1 (de) * 1986-02-15 1987-08-20 Manfred Wanzke Rollenrichtmaschine
DE4308744A1 (de) * 1993-03-19 1994-09-22 Schloemann Siemag Ag Richtmaschine, insbesondere zum Richten von Blechen und Bändern
FR2731372B1 (fr) * 1995-03-08 1997-05-16 Lorraine Laminage Procede et dispositif de planage de produits plats metalliques, tels que bandes, toles ou feuilles

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701274A (en) * 1970-11-09 1972-10-31 Sutton Eng Co Roller leveler with adjustable flattening section
JPS50149574A (fr) * 1974-05-22 1975-11-29
JPS5914285B2 (ja) * 1974-05-22 1984-04-04 住友重機械工業株式会社 コイル状の金属帯板の形状を矯正する方法および方法実施のための装置
JPS5750573B2 (fr) * 1976-09-24 1982-10-28
JPS5339962A (en) * 1976-09-24 1978-04-12 Kubota Ltd Method of straightening pipe opening part
JPS5360362A (en) * 1976-11-09 1978-05-30 Mesta Machine Co Process for stratghtening thin and long work and machine for straightening the same
US4144731A (en) * 1977-04-16 1979-03-20 Irma Ungerer Geb. Dollinger Machine for flattening sheet metal
JPS577803B2 (fr) * 1977-08-10 1982-02-13
JPS5429867A (en) * 1977-08-10 1979-03-06 Hitachi Ltd Roller leveler
US4454738A (en) * 1981-06-29 1984-06-19 The Paxson Machine Company Roller leveler and method of operating same
US4633697A (en) * 1985-08-16 1987-01-06 Mesta Engineering Company Plate levelling machine
US5189896A (en) * 1992-03-02 1993-03-02 Mesta International Single stand roller leveller for heavy plate
US20080011036A1 (en) * 2006-07-13 2008-01-17 Buta John R Cassette roller leveler with common back-up rolls
US7637133B2 (en) * 2006-07-13 2009-12-29 Butech Bliss Cassette roller leveler with common back-up rolls

Also Published As

Publication number Publication date
DE1752211C3 (de) 1975-10-09
GB1260938A (en) 1972-01-19
FR2006609A1 (fr) 1969-12-26
DE1752211B2 (de) 1975-02-20
DE1752211A1 (de) 1971-08-05

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