US3892116A - Shaping presses - Google Patents

Shaping presses Download PDF

Info

Publication number
US3892116A
US3892116A US365868A US36586873A US3892116A US 3892116 A US3892116 A US 3892116A US 365868 A US365868 A US 365868A US 36586873 A US36586873 A US 36586873A US 3892116 A US3892116 A US 3892116A
Authority
US
United States
Prior art keywords
press
panel
frame
punch
press device
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
US365868A
Other languages
English (en)
Inventor
Michel Maurice Gera Sentourens
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Application granted granted Critical
Publication of US3892116A publication Critical patent/US3892116A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers

Definitions

  • Keenan Attorney, Agent, or Firm-Karl W. Flocks 5 7 ABSTRACT A press device for shaping or flattening a long panel by giving it, at substantially every point, a predetermined curvature either transverse or longitudinal, or both at once, or in a single direction at an angle in relation to the length of the panel.
  • the press device has a frame press carrying a moveable punch and the frame spans a table. Above the table extending on either side of the frame press is an overhead beam supported at its extremities by two portal members, the beam carries a pair of carriages provided with depending brackets able to grip the opposed ends of the long panel as it is shaped or flattened by the punch of the said frame press.
  • Both the punch and the table under the frame press may be provided with displaceable rails.
  • the displacements inter alia of the panel and the punch are accurately controlled and displayed on a display board.
  • the press is also provided with a long table beneath and in line with the said overhead beam, the table being provided with moveable rollers and gauge support means for checking the shape of the panel by metrology.
  • This invention relates to a press for shaping or flattening very long panels by giving them at substantially every point a predetermined curvature, either transverse or longitudinal. or both at once, or in a single direction at an angle in relation to the length of the panel.
  • a press of the kind specified also allows the straightening i.e.. flattening of panels having any shape due inter alia to manufacturing faults or to internal stresses in the material of which they are made.
  • the panels to be shaped may be of aerodynamic or hydrodynamic structures or panels of constructions which have to have predetermined curvatures for utility or architectural purposes.
  • the invention applies more particularly to so-called integral panels 4 i.e.. panels cut with their various reliefs. inter alia their reinforcing ribs, in thick. originally flat metal plates.
  • the shaped panels with one face remaining smooth can be used inter alia for making the cellules and aerofoils of transport aircraft.
  • the invention obviates this disadvantage; it enables the operations necessary for shaping to be defined during the shaping of a first panel. whereafter such operations can readily be repeated identically during the shaping of the subsequent panels in the same series.
  • a press device adapted to shape panels of elongate construction.
  • a frame press adapted to act locally on each panel. and panel supports disposed on either side of the frame, characterised in that there is associated with the frame press on each side a supporting beam for a carriage having a hanging bracket and bearing each of the ends of the panel. the displacements of the two carriages being conjugate and measured when they are bearing the same panel.
  • the conjugate displacements of the carriages are controlled by a known numerical control i.e.. the carriages can be automatically displaced to take up a position displayed in advance.
  • each beam there is disposed beneath each beam at set of rollers transverse of the beam which facilitate the conveying of panel and prevent friction at the passage of the transverse press frame against the panel shaping tools.
  • the rollers can be associated with a table adapted to bear the gauges for checking the shaping work performed; the rollers can in that case be retractable in relation to the table and therefore the gauge. to ensure that the panel is resting on the gauge at the right moment.
  • each bearing one panel end support can be displaced at long brackets hanging from the carriages movable along the beams.
  • Such support can pivot around the horizontal axis parallel with the panel supporting beam. to enable the panel to be turned over.
  • the support can also be resilient and light-weight so as not to impose on the end of the panel parasitic forces affecting its shaping.
  • an auxiliary lifting device having a panel end rotating support can be disposed on the end nearest the frame press of a gauge-carrying table, to co-operate. in order to turn a panel over completely, with the mobile support associated with the chariot having a hanging bracket disposed on the same side of the press.
  • the frame press comprises a punch which can move in the frame transversely of the panel to be shaped.
  • such displacement can be measured and is preferably also performed by a numerical control; this allows, in each transverse zone of a panel determined longitudinally by the location of the carriages with hanging brackets containing the panel. the punch tool to act exactly at the required place. due to the selection of location in such zone.
  • a shaping matrix and punch of any kind can be used for shaping the panels.
  • a cylindrical punch and matrix can be used for shaping the panels.
  • the shaping tools are curved parallel rails of adjustable distance borne both by the punch and the table of the press.
  • Two rails can be disposed on one side of the panel and a single rail. disposed between the two first-mentioned ones. on the other side.
  • the rails having a cylindrical surface; however. their curved surfaces can be inwardly curved.
  • the tool-carrier of the punch and the press table have rectilinear sectional members whose distance can be adjusted and into which the rails fit, being retained by locking. for instance, by sprung catches.
  • the panel can be bent in a direction longitudinal or transverse, or even inclined in relation to the panel.
  • the reproducible selection of the arrangement of the shaping rails for action at a predetermined place on the panel enables the curvature given to the panel at that place to be varied if required using the same rails.
  • FIG. 1 is a perspective view of the assembly of a device according to the invention
  • FIG. 2 is a side elevation of the device
  • FIG. 3 is an end elevation, taken in the direction of the arrow III of FIG. 2.
  • FIG. 4 is an end elevation of the frame press of the device.
  • FIG. 5 shows partly in section the punch mechanism of the frame press
  • FIG. 6 is a scrap section taken on the line VI VI of FIG. 5'.
  • FIG. 6a is a detail of FIG. 6;
  • FIG. 7 is a part-elevation and a part-section of the table of the frame press
  • FIG. 8 is a perspective plan view of the table showing its operation and the position of the shaping rails.
  • FIG. 9 is a cross-section of a shaping rail
  • FIG. 10 is a plan view of the same table adapted to receive inclined shaping rails
  • FIG. 11 and 12 are sections taken on the lines XI XI and XII XII of FIG. 10 respectively;
  • FIG. I3 is a diagrammatic perspective view of the kinematic chains ensuring the displacement of the rails and the punch-carrying carriage under the press frame;
  • FIG. 14 is an axially sectioned view of one of the two tables disposed on either side of the press frame;
  • FIG. 15 is a section taken along the line XV XV in FIG. 14;
  • FIG. 16 is a side elevation, partly cut-away. of a carriage with hanging brackets
  • FIG. 17 is a section, taken on the line XVII XVII, in FIG. 16 of a supporting beam for a hanging bracket and a front view of such bracket taken on the line XVII XVII in the same FIG. 16, and
  • FIG. 18 is a diagrammatic perspective view of the kinematic chains for displacing the two hanging brackets.
  • the device has at its centre a press frame A having a punch carrying carriage B which can move in the opening in the frame.
  • a press frame A having a punch carrying carriage B which can move in the opening in the frame.
  • a punch carrying carriage B On either side of the press and bearing against the top of the frame and perpendicular therewith are disposed horizontal beams C supported by portals D at their ends opposite from the press.
  • Movable along each of the beams is a carriage 97 (FIG. 17) with hanging brackets E E,.. a carriage F bearing a gripping member G for one end of the panel to be shaped being movable along each of the beams.
  • a lifting device L for instance a jack, comprising at its end a gripping member M adapted to be combined with the member G disposed on the same side to enable a panel to be turned over in the way described hereinafter.
  • the arrangement also has a display board N which can display the numerical data determining the position of each of the active members of the arrangement and at the same time recording the actual positions of the members. so that the displacement thereof is in known manner automatic and stopped when the values displayed coincide with the actual values.
  • the framepress (FIG. 4) is formed by two uprights I, a caisson-shaped top 2 and a table 3.
  • a carriage 4 of the punch carrying carriage B rolls on solid rails 5 (FIGS. 5 and 6) fonning the lower part of the top, via rollers 6, and is centred on such rails by lateral rollers 7. Lastly, the carriage 4 bears against the rails with an increasing force when the press is operating.
  • each bolt 8 is lifted by a rod II via the action of an hydraulic jack 12.
  • the punch press can move vertically in relation to the carriage 4 as a result of a jack 13 operating on the centre of supporting plate 14 of the punch tools.
  • the supporting plate 14 is prevented from rotating by four pins 15 vertically engaging in a bell-shaped member 16 forming the lower part of the carriage 4.
  • the tool-carrier 17 is attached to the circular plate 14 by a ring nut 18. In its lower portion the tool-carrier 17 has at least one U-shaped sectional member 19 disposed in its median plane. and also preferably a pair of sectional members 20 (shown in chain-dotted lines in FIG. 4) disposed symmetrically in relation to the central sectional member.
  • the supporting plate 14 has an indexing finger 21 which can engage in two holes disposed in the base 22 of the tool-carrier one from the other.
  • the finger 22 can also be completely retracted to enable the sectional members 19 or 20 to be orientated obliquely in relation to the frame so as to co-operate with rails also disposed obliquely on the table 3, as shown in FIG. I0.
  • an index 22a co-operates with a graduated angle unit borne by a sector 16a attached to the lower portion of the bell-shaped member 16.
  • the punch carrying carriage B bearing the tools forming the punch isdisplaced as a whole (FIGS. 4 and 5) along the rails 5 by the chain 23 attached to the said carriage by its two ends.
  • the chain 23 being driven by a motor 24 via an intermediate transmission 25 (FIG. 13).
  • the said intermediate transmissions illustrated in FIGS. 13 or I8 utilise complex pinion means and are required to obtain predetermined step-down ratios with pinions having a standardized number of teeth.
  • the motor 24 also drives. via intermediate transmission 26, the chains 27 in a displacement which at any moment is one-half that of the chain 23.
  • the chains 27 are attached by their two ends to frames 28 acting as supports for pulleys 29 on which the supply tubes 30 and 31 for the jack 13 displacing the punch and jacks I2 controlling the brakes respectively are wound.
  • the ends of the tubes can therefore be attached on the one hand to the top 2 and on the other to plates 32 unitary with the punch carriage B. the tubes 30, 31 remaining constantly tensioned.
  • the vertical displacement of the tool carrier 17 (FIG. 5) is measured by a senser 33 which transmits such information to a coding device 34 whose result is displayed on the board N opposite the required value for the displacement punch.
  • the measuring and coding device (known per se) is one of the precise type adapted, for instance, to evaluate displacements to about one hundreth of a millimetre.
  • a coder 36 (cf. FIG. 13) which is advantageously of the rotary type and can be disposed in front of the output shaft of the drive motor 24 to evaluate the turns and fractions of a turn thereof, so as to indicate at any moment the location of the punch in the carriage B and enable a precise predetermined position to be given thereto.
  • the U-shaped sectional members 19 and 20 (FIG. 4) of the punch are adapted to receive, in the manner illustrated in FIG. 9 for a U-shaped sectional member 37 adapted to be borne by the table 3, detachable rails 38 whose outer surface is curved and which are adapted locally to shape the panel treated in the press.
  • the rails 38 can be made of reinforced plastics, for instance, polyester or phenoplastic resin reinforced with cotton fabrics or glass fibres.
  • the rotation of the two pinions 45 (FIGS. 7 and 12) is obtained by the rotation of one or the other of the handwheels 46, 47 unitary with the same shaft 48 extending through the table 3 and bearing two helical pinions 49 which mate and co-operating with the two helical pinions respectively.
  • sectional members 19, or 20 When the sectional members 19, or 20 are placed as shown in FIG. 4 and equipped with rails 38, they can co-operate with rails 52 mounted in sectional members 50, 51.
  • Each of the ends of the sectional member is connected to the two ends of an identical chain 53 which can be driven by a motor 55 via a transmission 54.
  • each of the ends of the sectional member 51 is connected to the two ends of a chain 56 which can be driven by a motor 58 via a transmission 57.
  • the coders enable the positions (FIG. 13) Y, of the guide bar 50 and Y, of the guide bar 51 to be determined in relation to a reference plane 0, x, z; and such positions can be displayed on the display board N.
  • the motor 24 and the coder 36 can be controlled automatically to give to the punch carrying carriage B the ordinate y where y y, y,,j2 thereby to ensure that sectional member 19 is exactly in the middle between the sectional members 50 and 51, (FIG. l3 FIG. 2) or to force the sectional member 6 20 to be symmetrical in relation to the sectional members 50, 51.
  • FIG. 10 Another pair of rail-carrying sectional members 61, 62 (FIG. 10) can if necessary be used in the plane of the table 3 but an inclination to a line perpendicular to the line of the beams C, when the sectional members 19, or 2.0 have already been given such oblique orientation in the way already explained.
  • a plate 63 is placed on each of the pairs of dowels 41 disposed towards the same upright of the frame.
  • the plates 63 are mounted head-totail and each comprise spigott holes engaging with two of the dowels 41 and an elongated slot 64 engaging with the other two dowels 41.
  • Each of the plates 63 is connected (FIG. 11) to a U-shaped sectional member 65 having a screw with two opposite handed screwthread 66, 67, the screw is adapted to rotate in a median bearing 68 and being operable by means of a thumbscrew 69.
  • Engaging with the screwthreads 66, 67 are nuts 70, 7] whose dowels 72 engage in elongated holes 73 in the sectional members 61, 62.
  • FIGS. 14 and 15 show in detail the embodiment of each of the tables H disposed on either side of the press frame A of FIG. 1.
  • the rollers 1 are mounted in U-shaped supports 74 each of which is borne by vertical uprights 75, 75a prevented from turning by small columns 76.
  • the other end of each of the angle plates 78, 78a is articulated via a pivot 80 80a, to a chain of connecting rods 81 extending over the whole length of the table H.
  • the upright 75a, closest to the frame press A is telescopic and comprises a shock absorbing spring 82.
  • This upright 75a is shown in the active position and its roller 1, is seen to be somewhat higher than the others, so that the rollers l which it bears act as shock absorbers for the panel as it enters or leaves the press.
  • the chain of connecting rods 81 can be actuated by a jack having a piston 83, and rod 83, shown generally at 83 oscillating around a pivot 830 whose clevis 84, terminating the piston rod, is articulated to the centre of the knee-joint formed by the two opposite ends of crank-arms 85, 86.
  • the crank-arm 86 is pivotted at point 87 which is carried by a partition 88 forming part of the table H.
  • the other end of the crank-arm is directly connected to the substantially vertical arm of the bell crank angle plate 78a.
  • crank-arms 85, 86 take up the position shown diagrammatically by 85a, 86a, respectively, the angle plates are retracted and the uprights bearing the rollers are lowered. A panel carried by the rollers I, 1, etc. will therefore tend to rest on the upper edge of the gauges K, (see FIG. so that its shape can be controlled.
  • the gauges K shown dotted in FIG. 15 rest on the brackets J and are retained in position by locking screws 89.
  • the rod L of the jack L terminates in a bush 90 in which a shaft 91 can rotate which terminates in a square end 91a, and carries via a clevis a clamp 92 having a screw 93.
  • the screw 93 enables one end of the panel to be gripped, and by rotating the indexing finger 21 through one half turn by a suitable crank, the panel can be turned over when it is engaged at its other end by the rotary gripping member G of the carriage F of the hanging bracket.
  • Each of the horizontal beams C which enable the hanging brackets to be displaced is mainly formed by two C-shaped sectional members 94 which have their backs juxtaposed and whose opposed lower ends bear flat rails 95 viaa struts 96.
  • Carriage 97 supporting a hanging bracket E comprises rollers 98 resting on rails 95, rollers 99 disposed below such rails and, at the front and rear, pairs of rollers 100 applied against the flat flanks of the rails 95.
  • the two carriages 97a, 97b, supporting the two hanging brackets E disposed on each side of the frame press A are driven by a single motor 101 in the manner shown diagrammatically in FIG. 18.
  • the motor 101 directly drives on one side of the press a chain 103 which is mounted in one of the beams C and whose two ends are attached to the carriage 97a.
  • the chain 105 is also driven, its ends being unitary with frame 106 acting as a upport for the shaft of pulley 107 bearing channels 108, 109 for supplying the jack (described hereinafter) mounted in the hanging bracket.
  • End shaft 110 of the transmission 102 bears a dogtype clutch 111 adapted to be controlled by the hydraulic jack 112.
  • a dogtype clutch 111 adapted to be controlled by the hydraulic jack 112.
  • the chain 116 is driven which bears fram 117 supporting a pulley 118 for supplying the hydropneumatic apparatuses of the hanging bracket disposed on the corresponding side.
  • the dog-type clutch 111 is first actuated to enable the motor 101 to engage the gripping member Gb of the bracket Eb to engage with one end of the panel.
  • the clutch is then released and the bracket Ea is then displaced on its own by the motor 101 until its gripping member Ga can engage the other end of the panel P.
  • a rotary coder 119 associated with the motor 101 allows the determination of the abscissa .r of any point on the panel i.e.. the determination at any moment of the abscissa of the point which is in the axis of the frame press A.
  • the required abscissa for each point on the panel P where the press is to be used is displayed on the display board N and the panel is displaced along the beams C until the actual position of the panel as determined by the coder 119 coincides with the abscissa displayed.
  • FIGS. 16 and 17 show the embodiment of a hanging bracket E, its displacement mechanism, and its accompanying mechanism enabling hydraulic power to be transmitted for the jack associated with such bracket.
  • each of the chains 103 and 114 are attached to an angle plate 120 attached to the carriage 97 (a or b) and such chains, due to the great length of the beam C, and are supported at places by pairs of superimposed pinions 121, one of which receives the upper run, and the other the lower run of the chain. Since the angle plates 120 pass just above the lower pinions 121, there is no resulting disturbance to the displacement of each carriage 97. Similarly, the chains (116) are supported in the same conditions by stepped pinions 122.
  • the intermediate transmissions of the pulleys 104 or are grouped in the hollow ends of the beams C furthest away from the frame press A.
  • Each hanging bracket E is a trapezoidal caisson 123 having inside it a jack 124 whose rod 125 bears, via a clevis, a pinion 126 over which there passes a chain 137 one end of which is attached to a foot 127 unitary with the carriage 97.
  • the chain then extends over two intermediate transmission pinions 128 and is attached by its other end to the carriage F for the operation of the latter.
  • the carriage F can move along two flat rails 129 disposed on the facade of the bracket and borne by supports 130.
  • the carriage F can move along the rails, it comprises on either side of the rails pairs of rollers 131, and, for guiding transversely of the rails, rollers 132 bearing against the edge of the rails.
  • the gripping member G is borne by the end of a resilient strip 133 attached to the base of the carriage F. At its free end the resilient strip has a bush 134 parallel with the beam C, and there engages in the bush a shaft 135 to which iss articulated, via a clevis, the press 136 forming the active part of the gripping member.
  • the press When the press has acted at all points on the panel with the force necessary to shape it. the panel is placed on the gauges K. When it is a first shaping operation and the shape of the panel is not perfect, the panel may have to be returned.
  • the gripping members G of one of the hanging brackets and the gripping member M associated with the jack L are attached to the same panel which at the moment is completely situated on one of the sides of the press frame.
  • the jacks L and 124 are individually operated to bring such members to the suitable level for attachment to the same panel.
  • the two jacks are then simultaneously actuated to lift the panel above the table.
  • the panel is made to turn around its axis by one-half turn by means of a crank 139, engaging with a square 91a.
  • the panel can be bent in accordance with its length, while with longitudinal rails the panel can be bent in accordance with its width.
  • rails of a predetermined inclination (if necessary evolutive) the panel can be spiralled and given a helicoidal.
  • Shaping obtained with three rails, for instance, two on the table H and one on the punch B, has the disadvantage of causing a central rounded fold framed by two flat portions.
  • the four rails being parallel with one another and symmetrical in relation to their central plane, a circular bending is obtained (constant bending force from one of the end rails to the other) i.e., a continuous inward curving of the panel surface can be obtained by exceeding the limit of elasticity.
  • the invention applies to the shaping of very long panels intended for naval or aeronautical construction or for the building of complex architectural structures. It is more particularly suited for the shaping of integral panels for supersonic aircraft, such panels being made from a metal plate suitably mechined to remove from it all excess material.
  • a press device for stepwise curve shaping panels of elongate construction comprising a vertical substantially rectangular press frame
  • punch means displaceable in said frame for acting lcally on the panel
  • each beam being provided with a primary carriage supporting a rigid hanging bracket adapted to hear one of the opposed ends of the panel, displacements of said primary carriages being conjugated and measured when carrying the same panel.
  • a press device wherein said hanging bracket is provided with a vertically movable secondary carriage facing said press frame and resiliently supporting means for gripping one end of said panel, said supporting means comprising a resilient strip directed towards said press frame and being adapted to pivot about a substantially horizontal axis.
  • a press device further characterized by a table below each of said beams and coextensive therewith, and by at least one upwardly extensible lifting member, attached to the end of one of said tables, which is turned towards said press frame,
  • said lifting member being povided with means for gripping one panel end, said latter means being adapted to be pivoted about a substantially horizontal axis, and means for pivoting said gripping means.
  • each of said primary carriages is fixed to the two ends of a chain looped over pinions located at the two ends of each of said beams, further comprising a single motor for driving one of the chains directly and the other chain by means of a controlled dog-type clutch.
  • a press device according to claim 1, wherein said punch has a vertical movement which is measurable with a precision substantially higher than the measuring of the displacements of the punch carrying carriage or the primary carriages.
  • a press device further characterized by a table below each of said beams and coextensive therewith, said table being provided with a plurality of spaced apart vertically retractable rollers and with panel checking gauges operative in the retracted position of said rollers.
  • a press device as defined in claim I wherein a table is below each of said beams and coextensive therewith and the panel is shaped by means of curved parallel rails borne both by said punch means and said press table, the distance between at least one pair of said rails being adjustable, said rails having a rectangular base and fitted and resiliently snapped into sectional members attached to said punch means and said press table.
  • a press device as defined in claim 9 wherein said sectional members of said press table are disposed parallel with the plane of said frame thereof and are adapted to be displaced simultaneously by the same amount in opposite directions in relation to the plane of symmetry of the said frame.
  • a press device as defined in claim l0 wherein a mechanism for displacing the sectional members comprises two screws each having in opposite directions two equal screw threads of contrary pitch each of such screw threads being adapted to co-operate with a nut comprising a vertical articulating finger and the fingers corresponding to the same screw being engaged in apertures, one circular aperture and one elongate aperture in two self-supporting plates disposed head to tail by two screws each comprising two screw threads in opposite directions, two pairs of nuts being provided to which a pair of said rail carrying sectional members are articulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US365868A 1972-06-08 1973-06-01 Shaping presses Expired - Lifetime US3892116A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7220607A FR2187448B1 (enrdf_load_stackoverflow) 1972-06-08 1972-06-08

Publications (1)

Publication Number Publication Date
US3892116A true US3892116A (en) 1975-07-01

Family

ID=9099873

Family Applications (1)

Application Number Title Priority Date Filing Date
US365868A Expired - Lifetime US3892116A (en) 1972-06-08 1973-06-01 Shaping presses

Country Status (3)

Country Link
US (1) US3892116A (enrdf_load_stackoverflow)
FR (1) FR2187448B1 (enrdf_load_stackoverflow)
GB (1) GB1379342A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110883258A (zh) * 2019-12-23 2020-03-17 苏州苏宏模具有限公司 一种冲压件导料装置
US12059825B2 (en) * 2018-07-31 2024-08-13 Kyoraku Co., Ltd. Structure manufacturing method and retaining device
CN118635324A (zh) * 2024-08-15 2024-09-13 长春金马科技制造有限公司 一种金属板材自动冲压设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3060431D1 (en) * 1979-02-27 1982-07-08 Citroen Sa Workpiece loader or extractor
FR2450132A1 (fr) * 1979-02-27 1980-09-26 Citroen Sa Extracteur de pieces
FR2465531A1 (fr) * 1979-09-21 1981-03-27 Citroen Sa Chargeur ou extracteur de pieces
DE3401703A1 (de) * 1984-01-19 1985-08-01 Günter 7500 Karlsruhe Zierpka Vorschubeinrichtung zum schrittweisen material- und/oder werkstuecktransport, insbesondere in pressen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2221539A (en) * 1938-01-12 1940-11-12 Aviat Mfg Corp Apparatus for handling propeller blade blanks
US3082809A (en) * 1958-11-28 1963-03-26 Hydraulik Gmbh Method and means for stretching undulated sheet material and like workpieces
US3257832A (en) * 1965-03-01 1966-06-28 Harvey Aluminum Inc Method and apparatus for finishing extrusions
US3344634A (en) * 1964-02-20 1967-10-03 Westinghouse Electric Corp Sizing cylindrical sections
US3550420A (en) * 1967-11-13 1970-12-29 Michael Scott Metal Shaping In Metal-forming system
US3568490A (en) * 1968-09-27 1971-03-09 Fairchild Hiller Corp Method and apparatus for heat forming elongated metal panels
US3677057A (en) * 1970-12-04 1972-07-18 Robert A Mackenzie Draw forming
US3712105A (en) * 1971-07-14 1973-01-23 R Harris Method of forming metal
US3729969A (en) * 1971-08-19 1973-05-01 Gen Electric Barrel forming press

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1524905A (en) * 1922-07-27 1925-02-03 Edwin V Birdsall Spacing device for punching or slotting machines
US1851845A (en) * 1929-02-20 1932-03-29 American Car & Foundry Co Structural steel working machine
US2363596A (en) * 1942-05-25 1944-11-28 Carnegie Illinois Steel Corp Die for punch presses and the like

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2221539A (en) * 1938-01-12 1940-11-12 Aviat Mfg Corp Apparatus for handling propeller blade blanks
US3082809A (en) * 1958-11-28 1963-03-26 Hydraulik Gmbh Method and means for stretching undulated sheet material and like workpieces
US3344634A (en) * 1964-02-20 1967-10-03 Westinghouse Electric Corp Sizing cylindrical sections
US3257832A (en) * 1965-03-01 1966-06-28 Harvey Aluminum Inc Method and apparatus for finishing extrusions
US3550420A (en) * 1967-11-13 1970-12-29 Michael Scott Metal Shaping In Metal-forming system
US3568490A (en) * 1968-09-27 1971-03-09 Fairchild Hiller Corp Method and apparatus for heat forming elongated metal panels
US3677057A (en) * 1970-12-04 1972-07-18 Robert A Mackenzie Draw forming
US3712105A (en) * 1971-07-14 1973-01-23 R Harris Method of forming metal
US3729969A (en) * 1971-08-19 1973-05-01 Gen Electric Barrel forming press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12059825B2 (en) * 2018-07-31 2024-08-13 Kyoraku Co., Ltd. Structure manufacturing method and retaining device
CN110883258A (zh) * 2019-12-23 2020-03-17 苏州苏宏模具有限公司 一种冲压件导料装置
CN118635324A (zh) * 2024-08-15 2024-09-13 长春金马科技制造有限公司 一种金属板材自动冲压设备

Also Published As

Publication number Publication date
FR2187448B1 (enrdf_load_stackoverflow) 1974-12-27
DE2327426B2 (de) 1976-08-12
FR2187448A1 (enrdf_load_stackoverflow) 1974-01-18
DE2327426A1 (de) 1973-12-13
GB1379342A (en) 1975-01-02

Similar Documents

Publication Publication Date Title
DE69202678T2 (de) Multi-funktionnelle Rohrbiegemaschine.
DE69710101T2 (de) Biegepresse
US3892116A (en) Shaping presses
CH681963A5 (enrdf_load_stackoverflow)
US3066394A (en) Apparatus for the manufacture of deeply-webbed girders
CN117655208B (zh) 一种隧道钢拱架连接钢板冲孔用辅助定位装置
DE69310008T2 (de) Werkstückmessgerät
US5218850A (en) Roll bending machine
DE2053266A1 (de) Vorrichtung zur schraubenlimenformi gen Verformung eines Bandes zu einem Rohr
DE2918813A1 (de) Vorrichtung zum biegen von metallstaeben
DE1962590A1 (de) Rohrbiegemaschine
DE69204153T2 (de) Präzisionsbiegepresse für relativ kurtze Bleckwerkstücke.
EP0589240B1 (de) Liegende Metallstrangpresse
CN210876866U (zh) 用于折弯机的后挡托料装置、折弯装置
CN216226644U (zh) 一种工民建施工用钢筋快速折弯装置
CN115008112A (zh) 一种预制t梁波纹管定位钢筋焊接支架
CN118976853A (zh) 一种公路t梁钢筋笼加工生产线及生产方法
CN201760475U (zh) 一种镦粗钢拉杆矫直机
DE2905924C2 (enrdf_load_stackoverflow)
US4745788A (en) Roll rearranging apparatus
CN219073960U (zh) 一种靶材修整机
CN216127414U (zh) 超大型木构件多功能加工装备
CN102335684A (zh) 一种镦粗钢拉杆矫直机
GB2081627A (en) Broaching machine
US3862586A (en) Gantry type large machine tool