US3841134A - Method of making profiled rails and bodies composed thereof - Google Patents

Method of making profiled rails and bodies composed thereof Download PDF

Info

Publication number
US3841134A
US3841134A US00324213A US32421373A US3841134A US 3841134 A US3841134 A US 3841134A US 00324213 A US00324213 A US 00324213A US 32421373 A US32421373 A US 32421373A US 3841134 A US3841134 A US 3841134A
Authority
US
United States
Prior art keywords
band
metal band
profiled
rolls
forming
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
US00324213A
Other languages
English (en)
Inventor
R Falkner
H Grune
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.)
RAPENA PATENT AND VERWALTUNGS AG
Original Assignee
RAPENA PATENT AND VERWALTUNGS AG
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 claimed from CH1826672A external-priority patent/CH568111A5/de
Application filed by RAPENA PATENT AND VERWALTUNGS AG filed Critical RAPENA PATENT AND VERWALTUNGS AG
Application granted granted Critical
Publication of US3841134A publication Critical patent/US3841134A/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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B21D5/086—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining closed hollow profiles
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/04—Making rigid structural elements or units, e.g. honeycomb structures composite sheet metal profiles
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/12—Constructions depending on the use of specified materials of metal
    • E06B3/14—Constructions depending on the use of specified materials of metal of special cross-section
    • E06B3/16—Hollow frames of special construction, e.g. made of folded sheet metal or of two or more section parts connected together
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component
    • Y10T29/49625—Openwork, e.g., a truss, joist, frame, lattice-type or box beam
    • Y10T29/49627—Frame component

Definitions

  • ABSTRACT A method of forming sharp-edged profiled rails and bodies from metal bands.
  • a band is first corrugated, and a directrix is determined subdividing the band into first and second areas composed of the areas between the first and second exterior edges of the band and the directrix.
  • One of the areas is moved in a swinging motion about the directrix while the transverse distance of the associated exterior edge of the area from the directrix is reduced during each part of the continuous forming process. By continuously reducing this transverse distance accrued edge tensile stresses are reduced.
  • the initial corrugations formed in the band are increased so that the length of each envoloping line of each part of the band is longer than the enveloping line of the longitudinal profile'contemplated for the corresponding part by about 2-5 percent. This allows subsequent upsetting and bending of the band with a curvature smaller than the band thickness without any thinning or weakening at the bends. Profiled rails formed in this manner may then be connected to form profiled bodies in a variety of ways.
  • the present invention relates to a method of making profiled rails and bodies composed thereof by means of the continuous forming of metal bands. Such forming is effected by rotating roll forming tools between which the said metal bands are passed. Such roll forming operations for making profiled rails are generally known and so are the roll forming machines employed therefor.
  • Forming of the flat metal band involved is commonly effected in a large number of consecutive forming steps each between a rotating pair of rolls so that the mechanical stress applied to the material in each forming step will not exceed the admissible maximum value in order to prevent excessive stretching and weakening at the bends and the appearance of longitudinal cracks.
  • a known measure to avoid overstressingthe material during forming consists of first corrugating the metal band in individual areas in order to facilitate subsequent hollow forming at the points involved by the provision of a sufficient quantity of material.
  • the method according to this invention constitutes a solution of this problem and relates to making profiled rails and bodies composed thereof by the continuous forming of metal bands which are passed between rotating pairs of forming rolls and first corrugated in certain areas to facilitate the subsequent profiling operations.
  • This method is characterized in that a directrix is determined on the metal band which coincides with a marked longitudinal edge of the finished profiled rails and that the first area of the metal band extending from theone exterior edge to the directrix is largely held in the initial position during the subsequent forming steps, while the second area extending from the other exterior edge to the directrix is tur-ned'about the directrix away from .the initial position during the consecutive forming steps while the said exterior edge performs a swinging motion and the edge tensile stress there obtaining is reduced, that the initial corrugations are increased until their enveloping lines transversely to the metal band become longer than the enveloping line of the longitudinal profile contemplated in the area involved and that, at the bending points of the rails, the band is upset transversely to the direction of travel by using thesurplus width created by the corrugations, bent with a radius of curvature smaller thanthe band 'thickness'and formed into sharp-edged profile structures.
  • FIG. 1 is a diagrammatic view of the consecutive forming steps in the metal band in making a complex rail, and the contemplated rotation of the basic plane;
  • FIG. 2 is a cross-section of the completed rail made by the forming steps of FIG. 1;
  • FIGS. 3 through 15 show pairsof rolls, partly at a reduced scale and partly in natural size, for the performance of forming steps in the making of the sharp-edged profiled rail according to FIG. 2;
  • FIG. 16 shows a profiled hollow body with folded welts made with the rail according to FIG. 2;
  • FIGS. 17 through 19 show further exemplified embodiments of hollow bodies with folded welts between two pairs of rails
  • a directrix 1'] is determined in the horizontal initial position'A of the metal band 10, the said directrix corresponding to a-particularly marked longitudinal edgeof the finished profiled hollow rail, in the present case the exterior edge 11 in FIG. 2.
  • the horizontal area 11-12 of the metal band 10 extending between the exterior edge l2 of the band 10 and the directrix 11 is to remain largely in the horizontal initial position inthe present example, with the exception of the longitudinal border 14 which is bent upwards in the course of the forming operation (cf. point 0).
  • This first area 11-12 comprises the longitudinal border 14, the side wall 15 and the boundary 16 of the longitudinal groove 17 includingits sharp-edged'flanges. As indicated in FIG.
  • the directrix 11 will fi nally form one, of the longitudinal edges of the com pleted profiled rail.
  • the. first area 11-12 of the metal band- 10 is substantially less widethan the area 11 13 extending from the directrix l1 tothe exterior edge 13.
  • this entire secondat'eall-IS of the metal band 10 is turned in the clockwise direction about-the directrix and forms, with of angle against the initial position, the upper side 18"and the double-walled web '19 and, with degrees of angle against the initial position, the side wall 20 and the longitudinal-border 2l'of the completedprofiledrai l.
  • FIGS. 20 through 26 show further exemplified em- I the front side of the flat web of material still forms a straight line A at the beginning of the forming process, the web is first given a certain concave and/or convex curvature indicated at B.
  • Such a curvature as the first step of formation is advantageous because the transverse stiffness of the web of material is thus reduced and its resistance against the subsequent forming in the continuous passage between corresponding pairs of rolls lowered.
  • the subsequent forming steps to the point C are designed to produce indentations and convexities in the web of material at the points where the groove designated at 17 in FIG. 3 will subsequently be formed.
  • the indentations and convexities and, respectively, corrugations are so increased that their enveloping line is longer than the enveloping line of the profile there contemplated.
  • This transformation of the U-type channel 27 between the points E and L to form the groove 17 with its largely final shape is effected by an upsetting process according to the present method.
  • Appropriately profiled co-operating pairs of rolls are preferably employed for the purpose, thesaid rolls at the same time reducing the depth of the channel 27 to the prescribed depth of the groove 17 and thus cause the folding back at the points 28, 29 and the compressionof the same.
  • no change in the width of the metal band to the left and to the right of the points 23, 24 occurs during forming between the points C and L.
  • the subsequent longitudinal groove 17 is on the one hand prepared in the first area 11-12 and, on the other, the folding for the later I80 bend ofthe double-walled web 19 begun.
  • the forming steps 6 through L only the final formation of the longitudinal groove 17 is performed in the. area "-12 and then'the longitudinal border 14 is bent up vertically relative to the side wall in accordance with the cross-sections M, N and 0.
  • second area 11-13 of the metal band 10 isso formed in the steps G, H,I, K and L and the 180 bending of the double-walled web 19 is completed on the one hand and, in'addition, thegradual bending of the upperside 18 about the directrix 11 is effected.
  • the side wall 20 vertical relative to. the web' 19 is straightened and the longitudinal border 21 bent downwards relative to the side wall 20 by 90.
  • the profiled rail finally has the cross-section as per FIG. 2 at. the point 0.
  • the length of the enveloping line on the cross-sectional representation of the desired rail advantageously the length of the center line between the outer and the inner wall of the rail.
  • the width of the metal band is then so determined that, with all profile structures and sharp bends, the length of the center line there is extended by 2 to 5 percent and the lengths of the straight portions of the center line are added to these values. This ensures that sufficient width of the metal band is available at the points subsequently subject to profiling steps in order to enablethe heavy deformations with upsetting and condensation of the band material to be effected.
  • the upsetting process described enables mechanically perfect and sharp-edged longitudinal profiles with closely specified dimensions to be produced in only a few forming steps, the selection of the length of the indentations and convexities providing the possibility of obtaining a thickening of the material and a structural condensation at the points desired.
  • the upsetting process is advantageously performed with profiled engaging pairs of rolls.
  • FIGS. 3 through' l5'each show an exemplified embodiment of such engaging pairs of rolls for making a sharp-edged profiled rail as per FIG. 2.
  • the flat metal band 10 is first formed, possibly following pretreatment, between rotating pairs of rolls with horizontal axes in the manner shown in FIGS. 3 to 5.
  • the convexity designated at 30 serves for the production of the later longitudinal border 14 of the side wall 15 and the convexity 31 for the preparation of the longitudinal groove 17.
  • the convexities 32 and 33 serve for the preparation of the'web 19 and the later longitudinal border 21 of the side wall 20.
  • these convexities are designed to provide sufficiently wide portions of the band for the subsequent heavy -deformation with simultaneous upsetting.
  • the horizontal double-walled web 19 is first completed and the profiling of the rail subsequently completed between the pairs of rolls according to FIGS. 13 through 15.
  • the plane of the metal band previously arranged virtually in the horizontal is gradually rotated by 90 of angle.
  • the bend 34 of 180 of angle at the outer end of the horizontal web 19 is changed, in the passage between the pairs of rolls according to FIGS. 10, 11, 12, from the rounded shape still shown in FIG. 9 into a more and more rectangular configuration, upsetting and material condensation occurring at the same time without which such a sharp-edged bending operation by 180 degrees of angle would not be possible.
  • the profiled rail obtains its final shape as per FIG. 2.
  • forming and upsetting of the metal bands is effected, as described above, by the interaction of pairs of rolls arranged on parallel horizontal shafts and rotating during the passage of the metal band involved.
  • the metal band is under a mechanical tensile stress in the longitudinal'direction as it passes the consecutive pairs of rolls. In the said known process this tensile stress is created in that the metal band is gripped at its formed end and pulled through all consecutive pairs of rolls while all feeding force is avoided.
  • the problem was solved -by ensuring that the consecutive pairs of rolls, while being driven individually or jointly on the one hand, on the other hand have: their effective diameters gradually enlargedby a'certain percentage so that the determinative circumferential speed of a'following pair of rolls is somewhat higher than that of the preceding pair of rolls.
  • the passing metal band is thus subject to a longitudinal tension which is newly built up in each pair of rolls and prevents the development of a thrusting force acting onthe band surface;
  • Suitable dimensioning of consecutive pairs of rolls with increasing circumferential speed makes it possible to exercise the desirable longitudinal tensile stress on the passing metal band, to avoid the undesirable thrusting' forces on the band surface and nonetheless to avoid all detriment to the band surface by the tractive forcesof the roll surfaces which pull it.
  • pairs of rolls with a diameter of about 220 mm on an average of the effective roll surfaces an increase of this diameter by increments of 0.4 percent in consecutive pairs of rolls produces an increase in the circumferential speed which supplies an adequate tractive force for pulling the metal bands through the pairs of rolls, which are additionally driven, even if an upsetting process occurs in forming the metal band in such a pair of rolls. No adverse effects on the surface of the metal band can be discovered and chatter marks or other marks do not appear.
  • an increase in the diameter of the effective roll surfaces by only 0.05 percent is not adequate to obtain a sufficient tractiveforce.
  • sharp-edged profile rails may be made of highgrade steel, preferably of bands made of the material as per No. 4301 DIN Standards 17006 of the quality 5 Cr Ni 18-9, corrosion and acid-proof, cold-rolled (process III c/d), brushed, with a band thickness of 0 .9 to 1.1
  • the presentmethod is however particularly suitable for making bodies composed of two or more such profiled rails, and in particular it enables sharp-edged'hollow bodies to be made by simultaneousiand-continuous 'roll forming two or more metal bands.
  • each vof the metal bands is passed through a separate set of pairs of forming rolls, profiled in consecutive forming steps from the initial position and the two profiled tails are then placed in a predetermined position relative to one another and then indetachably assembled into a unitary body.
  • a second metal band can be passed through an appropriate number of separate pairs of rolls so as to make a second profile rail which enables a profiled hollow body according to FIG. 16 to be made of the completely profiled first rail according to FIG. 2.
  • the second rail consists of the flat bottom 35 and the two longitudinal borders 36 and 37 at first bent at 90 of angle relative to the bottom 35.
  • the second rail has its bottom 35 forced against the longitudinal borders l4 and 21 respectively of the first rail, and the longitudinal borders 36 and 37 of the second rail are bent around the longitudinal borders 14 and 21 respectively of the first rail during the passage between appropriately designed additional pairs of rolls so that a folded welt connection of the associated longitudinal borders of both rails is obtained.
  • a sharpedged profile of the bend of the longitudinal borders 36, 37 of 180 of angle is created in the process so that sharp-edged outer profile edges are formed at the said point.
  • the metal band In forming the second rail the metal band must first be corrugated also for the second rail so as to enable the material to be condensed during the sharpedged bending and upsetting operation.
  • the necessary width of the second metal band is greater by 2 to 5 percent than the length of the enveloping line, measured between the outside and the inside of the metal band, of the completely formed second rail assembled with the first rail.
  • the folded welt connection between the longitudinal borders l4 and 36 and 21 and 37 respectively may, during assembling the first and the second rail for the obtention of the sharpedged profile hollow body according to FIG. 16, be reinforced in terms of strength and anchorage by suitable means.
  • suitable means are, by way of example, roughing the longitudinal borders 14, 21' and the inside of the longitudinal borders 36 and 37; in addition, suitable adhesives may be employed or an additional connection between the longitudinal borders 36 and 14 and 21 and 37 respectively provided by spot welding.
  • FIG. 17 A further exemplified embodiment of a sharp-edged hollow profile body composed of two rails is shown in FIG. 17.
  • the bottom rail 40 is connected with a symmetrical hat-type rail 41 by folded welts at the common longitudinal borders so that a symmetrical hollow'body is formed.
  • FIG. 18 Another exemplified embodiment of a sharp-edged hollow, profile body made according to the present method is shown in FIG. 18 with the two nonsymmetrical rails 42 and 43 which are also interconnected by folded welts on the two associated longitudinal borders.
  • FIG.1"19 shows a hollow body made of the rails 44 and 45 connected by two folded welts; apart from the sharp-edged profile structures made in accordance with the present method, dull-edged profile structures are shown at, the groove 46 whichmay naturally also be produced in processing metal bands according to 3 the present method if desired.
  • connection may be effected not only by foldedwelts as described above with reference to FIGS. 16 through 19.
  • welding may be effected with direct, lowfrequency or high-frequency current, if necessary also in an inert gas atmosphere. Welding is performed continuously during the passage of the rails to be connected by means of a suitable welding apparatus. Such welding apparatus are known and require no detailed description.
  • FIGS. 20 through 23 show exemplified embodiments of sharp-edged hollow profile bodies which consist of two rails simultaneously produced by roll forming in accordance with the present method and are welded together along two seam lines.
  • the two rails are made simultaneously in a twin machine with appropriate pairs of rolls in such a manner that, when emerging from the last pair of rolls, the two profiled rails face each other with the front edges of the associated borders to be welded and pass into an appropriate welding apparatus together for the simultaneous welding of the two front edges.
  • the first rail 47 is welded to the second rail 48 at the points designated at 49 and 50 respectively.
  • the first rail 51 is welded to the second rail 52 along the longitudinalseams 53 and 54 respectively.
  • the hollow body according to FIG. 23 is formed by welding-the first rail 59 to the second rail 60 along the welding seams 61 and 62 respectively.
  • FIGS. 24 through 26 Further exemplified embodiments of sharp-edged hollow profile bodies which can be made in accordance with the present method are shown in FIGS. 24 through 26.
  • the body according to FIG. 24 is made by welding the first rail 63 to the second rail 64 along the welding seams 65 and 66.
  • connection is effected by the welding seams 69 and 70 respectively.
  • the flat hollow body according to FIG. 26 is formed by the two sharp-edged profile rails 71 welded together along the seams 73 and 74.
  • Suitable elastic clutches by way of example hydrostatic drives or VOITH turboclutches which are suitable for the present purpose, are generally known and need no further explanation.
  • the present method of sharp-edged roll forming with upsetting and condensation of the formed metal bands at the bending points is, as previously explained, particularly suitable. for making complex profile structures.
  • a hollow rail with a cross-section according to FIG. 20 may therefore be made of only one metal band of appropriate width in that a directrix is first selected about where the left-hand'edge of the upper side is to be obtained and by providing sufiiciently deep indentations and/or convexities in the band at all points'contemplated for profiled longitudinal structures. These indentations and convexitiesmust have an enveloping line length which is larger by 2 to 5 percent than the mean enveloping line of the profile structures to be made at the points involved. There follows the step-bystep roll forming of the band, at least one of its exterior edges performing a swinging motion about the directrix while the individual bending and profiling operations are performed where the metal band is upset.
  • the necessary single longitudinal seam is advantageously placed at'a point which is not visible when such hollow rails-are employed.
  • a longitudinal seam at point 49 will not be visible since it is located at the bottom of a longitudinal groove in which a profiled sealing strip of an elastic rubbentype material is inserted.
  • a method of making profiled rails and: bodies composed thereof by continuous forming of at least on metal band characterized by the steps of:
  • a introducing initial undulations into parts of said band to facilitate subsequent profiling of said band- 10 by bending it at bending points between rotating pairs of forming rolls;
  • I b determining a directrix subdividing said metal band into a first area extending from one exterior edge to said directrix, and a second area extending from the other exterior edge to said directrix, said directrix coinciding with a marked longitudinal edge to be formed into said metal band;
  • c turning at least one of said areas about said directrix so that the exterior edge associated with said area performs a swinging motion while the transverse distance of said associated exterior edge from said directrix is reduced step-by-step throughout the continuous forming process, thereby reducing I accrued edge tensile stresses;
  • a method according to claim 2 further characterized-in that the circumferential speed of said subsequent pair of rolls is higher by at least.0.2 percent that that of the preceding pair of rolls.
  • a method according to claim 1 further characterized in that first and second metal bands are formed simultaneously, -the second metal band being. twisted from its initial position during the continuous forming, profiled, and placed ina predetermined position relative to a profiled rail formed from the-first metal band, and indetachably connected to the latter to make a profiled body.
  • Amethod according to claim 5 further characterized in that'a fold-type connection'betwe'en both profiled rails is'rnade at their longitudinal borders, the longitudinal borders beingforced together and one longitudinal edge of one rail being bentaround-the associated longitudinal borderof the other rail, the two longitudinal borders thereby becoming indetachably interconnected.
  • a method according to claim 1 further characterized in that said metal band is formed into a sharpedged profiled rail having left and right exterior b0rders by said continuous forming'operations, said profiled rail having a cross-section corresponding to a hollow rail in which said left and right exterior borders of 1 1 12 said metal band are turned to face one another and inrails through a third group of rotating pairs of formterconnected so that a sharp-edged profiled hollow rail ing r ll f r completing said profiled body, Closed on all Sides with y (me 'Ongitudiflal Seam is d. jointly driving said first and third groups of rotating madepairs of forming rolls with the same speed,
  • a method of making a Profiled body composed of e. driving separately said second group'of rotating f ifig fiiit metal band by bendpairs fuming mus with. a speed autfmafically ing between a first group of rotating pairs of fomk ad usted to the speed of said first and third groups of rotating pairs of forming rolls, and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US00324213A 1972-01-19 1973-01-16 Method of making profiled rails and bodies composed thereof Expired - Lifetime US3841134A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH75972 1972-01-19
CH1826672A CH568111A5 (en) 1972-12-15 1972-12-15 Cold forming metal strip by rolling - to form sections for metal windows

Publications (1)

Publication Number Publication Date
US3841134A true US3841134A (en) 1974-10-15

Family

ID=25685597

Family Applications (1)

Application Number Title Priority Date Filing Date
US00324213A Expired - Lifetime US3841134A (en) 1972-01-19 1973-01-16 Method of making profiled rails and bodies composed thereof

Country Status (11)

Country Link
US (1) US3841134A (xx)
JP (1) JPS5223622B2 (xx)
BE (1) BE794217A (xx)
CA (1) CA986789A (xx)
DD (1) DD102315A5 (xx)
DE (1) DE2302389B2 (xx)
ES (2) ES410595A1 (xx)
FR (1) FR2168462B1 (xx)
GB (1) GB1398463A (xx)
IT (1) IT978284B (xx)
NL (1) NL7300730A (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010628A (en) * 1974-01-22 1977-03-08 Rapena Patent - Und Verwaltungs-Ag Method and device of making a profiled body of at least one band of materials
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same
US5056348A (en) * 1989-06-01 1991-10-15 Robertson-Ceco Corporation Method of making a profiled sheet metal building unit
US5640869A (en) * 1994-12-07 1997-06-24 Aisin Seiki Kabushiki Kaisha Method for producing rolled structural shapes
CN100421872C (zh) * 2005-02-05 2008-10-01 上海申花钢管有限公司 一种高频电阻焊接连续辊式冷弯成形的复杂截面钢管加工方法
US20110174044A1 (en) * 2008-10-01 2011-07-21 Dong Sun Kim Apparatus for manufacturing window/door frames or bent metal products
CN103878216A (zh) * 2014-03-20 2014-06-25 扬州瑞铖钢业有限公司 型钢冷弯机的四辊同步变形机构
CN106195607A (zh) * 2016-08-25 2016-12-07 上海佳冷型钢有限公司 局部闭合开口冷弯型钢及其成型工艺
EP3715005A1 (en) * 2019-03-25 2020-09-30 Betak SA Earthing electrode, manufacturing process and machinery

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950917A (ja) * 1982-09-17 1984-03-24 Hashimoto Forming Co Ltd プロファイル材の軸線曲げ方法及びその装置
JPS61221440A (ja) * 1985-03-25 1986-10-01 マルセロ・ヴアレンザノ 押出構造用型材と押出部材との結合システム
DE4008998A1 (de) * 1990-03-21 1991-09-26 Theo Schroeders Tuerzarge und verfahren zu ihrer herstellung
DE19741157C2 (de) * 1996-09-18 2000-09-07 Hoermann Kg Antriebstechnik Vorrichtung zum motorischen Antreiben eines ein- oder mehrteiligen Torblatts mit einer C-förmigen Führungsprofilschiene
DE102004016524A1 (de) * 2004-03-31 2005-10-20 Daimler Chrysler Ag Vorrichtung und Verfahren zur Herstellung von Walzprofilen
DE102011079095A1 (de) * 2011-07-13 2013-01-17 Hilti Aktiengesellschaft Verfahren zum Herstellen eines Profils aus einem Blechband
CN107570622B (zh) * 2017-09-20 2023-11-17 江苏同力日升机械股份有限公司 一种紧急导轨及其弯曲成型方法
WO2021091503A2 (en) * 2019-11-08 2021-05-14 Cizgi Teknoloji Elektronik Tasarim Ve Uretim Anonim Sirketi A frame production method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251967A (en) * 1936-08-05 1941-08-12 Carl M Yoder Machine for and process of forming structural members
US3638465A (en) * 1969-03-10 1972-02-01 Flangeklamp Corp Method of forming a structural element
US3689970A (en) * 1969-08-28 1972-09-12 Rapena Patent & Verwaltungs Ag Method and device for making up metal bands into hollow rails

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251967A (en) * 1936-08-05 1941-08-12 Carl M Yoder Machine for and process of forming structural members
US3638465A (en) * 1969-03-10 1972-02-01 Flangeklamp Corp Method of forming a structural element
US3689970A (en) * 1969-08-28 1972-09-12 Rapena Patent & Verwaltungs Ag Method and device for making up metal bands into hollow rails

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010628A (en) * 1974-01-22 1977-03-08 Rapena Patent - Und Verwaltungs-Ag Method and device of making a profiled body of at least one band of materials
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same
US5056348A (en) * 1989-06-01 1991-10-15 Robertson-Ceco Corporation Method of making a profiled sheet metal building unit
US5640869A (en) * 1994-12-07 1997-06-24 Aisin Seiki Kabushiki Kaisha Method for producing rolled structural shapes
CN100421872C (zh) * 2005-02-05 2008-10-01 上海申花钢管有限公司 一种高频电阻焊接连续辊式冷弯成形的复杂截面钢管加工方法
US20110174044A1 (en) * 2008-10-01 2011-07-21 Dong Sun Kim Apparatus for manufacturing window/door frames or bent metal products
CN103878216A (zh) * 2014-03-20 2014-06-25 扬州瑞铖钢业有限公司 型钢冷弯机的四辊同步变形机构
CN103878216B (zh) * 2014-03-20 2016-05-11 扬州瑞铖钢业有限公司 型钢冷弯机的四辊同步变形机构
CN106195607A (zh) * 2016-08-25 2016-12-07 上海佳冷型钢有限公司 局部闭合开口冷弯型钢及其成型工艺
CN106195607B (zh) * 2016-08-25 2018-05-29 上海佳冷型钢有限公司 局部闭合开口冷弯型钢及其成型工艺
EP3715005A1 (en) * 2019-03-25 2020-09-30 Betak SA Earthing electrode, manufacturing process and machinery

Also Published As

Publication number Publication date
BE794217A (fr) 1973-05-16
JPS4885470A (xx) 1973-11-13
DD102315A5 (xx) 1973-12-12
JPS5223622B2 (xx) 1977-06-25
ES410595A1 (es) 1976-04-16
DE2302389B2 (de) 1976-08-05
CA986789A (en) 1976-04-06
ES212802Y (es) 1976-11-01
FR2168462B1 (xx) 1976-04-23
DE2302389A1 (de) 1973-07-26
ES212802U (es) 1976-06-01
NL7300730A (xx) 1973-07-23
GB1398463A (en) 1975-06-25
IT978284B (it) 1974-09-20
FR2168462A1 (xx) 1973-08-31

Similar Documents

Publication Publication Date Title
US3841134A (en) Method of making profiled rails and bodies composed thereof
US3165815A (en) Process for the manufacture of sections
US3812558A (en) Method and apparatus for manufacturing expanded structural members and its products
US3273976A (en) Sheet steel and sections, tubes and composite constructions manufactured therefrom
US6769366B1 (en) One piece center sill for a railroad car
US3314141A (en) Method and device for manufacturing metal tubes by helically coiling a sheet metal strip
US4619131A (en) Method for bending sheets
CN114192624B (zh) 一种铁路车辆用非对称型上侧梁连续冷弯成型的方法
US4590781A (en) Method for forming an electric resistance welded steel pipe
US3979808A (en) Method of continuously processing metal bands into hollow rails
USRE18272E (en) A corpora
US2741834A (en) Method of forming integrally stiffened panels
US2056675A (en) Method of and apparatus for making composite strips
US2040494A (en) Method of reworking rails
JP2994202B2 (ja) 真円度の優れた電縫鋼管の製造方法
US1777080A (en) Sheet-metal shaft and method of making same
PL89783B1 (xx)
SU1079334A1 (ru) Способ изготовлени гнутых несимметричных профилей
JPS6317527B2 (xx)
JPS5750213A (en) Manufacture of square metallic blank pipe
DE2217509A1 (de) Leichtbau-Trägerprofil sowie Verfahren und Vorrichtung zu dessen Herstellung
SU1148667A1 (ru) Способ изготовлени гнутых @ -образных профилей
SU1118448A1 (ru) Способ изготовлени гнутых @ -образных профилей
US1140087A (en) Art of rolling hollow-headed metal bars.
US1517053A (en) Process of making bag frames