EP1847333A1 - Méthode de réduction d'épaisseur d'un materiau roulé - Google Patents

Méthode de réduction d'épaisseur d'un materiau roulé Download PDF

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Publication number
EP1847333A1
EP1847333A1 EP07105752A EP07105752A EP1847333A1 EP 1847333 A1 EP1847333 A1 EP 1847333A1 EP 07105752 A EP07105752 A EP 07105752A EP 07105752 A EP07105752 A EP 07105752A EP 1847333 A1 EP1847333 A1 EP 1847333A1
Authority
EP
European Patent Office
Prior art keywords
rolling
rollers
flat
thickness
longitudinal shafts
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.)
Withdrawn
Application number
EP07105752A
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German (de)
English (en)
Inventor
Armin Herb
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.)
Hilti AG
Original Assignee
Hilti 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
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1847333A1 publication Critical patent/EP1847333A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling

Definitions

  • the invention relates to a method for reducing the thickness of one-piece rolling, the type mentioned in the preamble of claim 1, and a rolling device for carrying out the method.
  • a profile does not necessarily have to have a constant thickness or material thickness over its circumference.
  • the thickness can be partially reduced and thus material can be saved.
  • a partial reduction in thickness by a single-stage rolling by cold rolling on a strip-shaped rolling is not useful because due to the friction transverse to the roll and the stiffness of the flat rolled material reduction is converted only in one stretch in the longitudinal direction or in the rolling direction and a material consolidation. This leads to internal stresses and strong distortions of the rolling stock.
  • a method for forming thickness-profiled one-piece rolling stock in which, in order to form a reduced-thickness region, the starting material is shaped in the width direction by means of rollers which penetrate different depths into the starting material over the width of the rolling stock.
  • a disadvantage of the known solution is that depending on the width of the area reduced in thickness, five or more forming stages must be provided. These must be due be arranged in order of size before a standard profiling or the Abwalzungen must be prepared separately in a separate rolling process in advance. Such measures increase the cost of production, so that the economic benefit is not given despite the material reduction created.
  • the object of the invention is to provide a method for reducing the thickness of one-piece rolling, in which a region-wise material reduction of a rolling stock can be achieved with a small additional effort in a profiling of the rolling stock.
  • longitudinal shafts are rolled by means of at least two profiled rollers arranged opposite one another, whose wave crests and wave troughs extend parallel to the longitudinal extent of the rolling stock, and the area provided with longitudinal shafts is then flat-rolled over at least two rollers arranged opposite one another.
  • the thickness can be reduced, wherein the rolling stock is stretched in this area.
  • longitudinal shafts is understood to mean a wave-like profiling whose peaks and troughs extend parallel to the longitudinal extent of the rolling stock or in the rolling direction.
  • the area adjacent the longitudinally-wave-provided area usually has sufficient rigidity against lateral deformation, which prevents the displaced material from flowing into this area when forming the longitudinal shafts.
  • this area is further stretched and the thickness of the rolling stock is rolled to the desired reduced thickness.
  • the adjacent areas of the rolling stock are displaced laterally or outwards.
  • the rolling stock is formed band-shaped, which is subsequently formed into a plurality of profile shapes.
  • the strip-shaped rolling stock forms, for example, a sheet-metal strip which is provided with at least one thickness-reduced area by means of the method according to the invention.
  • the free ends of the rolling stock are subjected to a forming operation, since this reduces the transverse rigidity of this area not reduced in thickness, in flat rolling of the area provided with longitudinal waves, stretching of the area reduced in thickness is simple Guaranteed manner.
  • the strip-shaped rolling stock is formed into a C-shaped mounting rail.
  • C-shaped mounting rails represent a material-intensive profile, so that by means of the inventive method, the manufacturing costs for such a profile due to the material reduction created can be significantly reduced.
  • the thickness of the bottom section between openings arranged therein and also the thickness of the side walls can be partially reduced, wherein these thickness reductions only insignificantly influence the static behavior of the C-shaped mounting rail.
  • a rolling device for carrying out the method according to the invention has at least two profiled rollers arranged opposite one another, which have forming ribs running parallel to one another to form longitudinal shafts in a one-piece rolling stock, and two rolls arranged opposite one another for flat rolling of the longitudinal shafts.
  • two or three forming steps are sufficient, so that the rolling device can run in a conventional profiling system.
  • the outermost forming ribs of the at least two oppositely disposed profile rollers have a distance which corresponds to the dimension of the thickness of the rolling stock to the extent of the thickness of the thickness-reduced portion of the rolling stock.
  • the edge region is grasped first and lateral retraction of the belt is prevented.
  • the edge regions of the region to be reduced in thickness during rolling of the longitudinal shafts are rolled down to the thickness of the thickness-reduced region.
  • the forming radius of the outermost longitudinal shafts is advantageously reduced to a minimum.
  • the outermost forming ribs preferably have a rounded free edge whose radius is smaller than the radius of the other free edge of these forming ribs.
  • the radius of the outermost longitudinal shafts is advantageously reduced to a minimum and is, for example, less than half the thickness of the starting material of the rolling stock, whereby at the beginning of the rolling operation for forming the longitudinal shafts, grasping the edge area additionally ensures and lateral retraction of the band is additionally prevented.
  • the at least two oppositely arranged rollers for flat rolling of the longitudinal shafts have at least one flat rolling region arranged obliquely to the axis of rotation of the rolls, wherein the flat rolling regions of the rolls arranged opposite one another are aligned parallel to one another. Because of the flat rolling regions arranged at an angle to the axis of rotation of the rolls, these rolls have different peripheral speeds along these flat rolling regions, which causes so-called longitudinal slip during the rolling process. This longitudinal slip counteracts the frictional resistance of the roller transversely to the running direction of the rolling stock, wherein the flat rolling of the areas provided with longitudinal waves is compensated by broadening the rolling stock.
  • each roller for flat rolling of the longitudinal shafts has at least two obliquely arranged flat rolling regions, whereby two areas of the rolling stock provided with longitudinal shafts can be simultaneously smoothly rolled.
  • the at least two obliquely arranged flat rolling regions of a roller are arranged at an angle to one another, whereby any additional internal stresses or distortions of the rolling stock are prevented.
  • a clearance is provided between the rollers for the flat rolling of the longitudinal shafts, which extends between the obliquely arranged flat rolling areas, so that during flat rolling the lateral extension of the thickness-reduced area can be compensated inwardly by lowering a rolling stock section.
  • a C-shaped mounting rail is produced from the material reduced in thickness, the area which forms the bottom section of the C-shaped mounting rail is usually provided with perforations before the thickness reduction. This configuration of the rolls for flat rolling of the longitudinal shafts, a deformation of the already punched perforations is avoided.
  • FIGS. 1 to 3 show a first exemplary embodiment of a rolling device 11 for reducing the thickness of one-piece rolling stock 31, which can be arranged in a conventional profiling system.
  • the rolling stock 31 is band-shaped, z. B. as a sheet metal strip formed.
  • the rolling device 11 (FIG. 1) has two profiled rollers 12 and 16 arranged opposite one another, which each have forming ribs 13 and 17 for forming longitudinal shafts 32 on the strip-shaped rolling stock 31.
  • the longitudinal shafts 32 have wave peaks 28 and wave troughs 29, which extend parallel to the longitudinal extent of the rolling stock 31.
  • the rolling device 11 for flat rolling of the previously formed longitudinal shafts 32 has two rollers 12 and 16 arranged opposite one another with a smooth surface (FIGS. 2 and 3).
  • longitudinal shafts 32 which extend in the rolling direction in the rolling direction, are formed on the rolling stock 31 to partially reduce the thickness with the profiled rollers 12 and 16. Due to the inherent rigidity of the adjacent regions 34 and 35, the material displaced during the profiling process can not flow away laterally, and the rolling stock 31 is only stretched in width in the region 33 to be reduced in thickness D.
  • the free ends 36 of the rolling stock 31 are formed before the flat rolling of the longitudinal shafts 32. Subsequently, the longitudinal shafts 32 are flat-rolled by means of the rollers 21 and 22, wherein the adjacent regions 34 and 35 are each pushed away laterally in the direction of arrows 38. In this process step, the region 33 to be reduced in thickness is rolled to the desired reduced thickness E.
  • FIG. 4 shows a rolling device 41 which has two profile rollers 42 and 46 arranged opposite one another.
  • upper Profile roller 42 has to form longitudinal shafts 52 on a strip-shaped rolling stock 51 outer forming ribs 43 and inner forming ribs 44.
  • lower profile roller 46 has to form the longitudinal shafts 52 also outer Umformrippen 47 and an inner Umformrippe 48.
  • the outer forming ribs 43 of the profile roller 42 have to the outer forming ribs 47 of the profile roller 46 a distance F, which corresponds to the thickness E to be achieved by the thickness reduction.
  • the outer forming ribs 43 of the profile roller 42 have a rounded edge 45, whose radius is smaller than the radius of the other free edge 40 of these outer forming ribs 43 is formed.
  • the radius of the rounded edge 45 of the outer forming ribs 43 in this embodiment is 0.1 mm and the radius of the other free edge 40 of the outer forming ribs 43 is 0.3 mm.
  • the outer forming ribs 47 of the profile roller 46 have a rounded edge 49 whose radius is smaller than the radius of the other free edge 50 of these outer forming ribs 47 is formed.
  • the radius of the rounded edge 49 of the outer forming ribs 47 in this embodiment is 0.3 mm and the radius of the other free edge 50 of the outer forming ribs 47 is 0.8 mm.
  • the edge portion 56 of the thickness-reducing portion 53 of the rolling stock 51 is first grasped, thereby preventing the adjacent portions 54 and 55 from being laterally set in forming the longitudinal shafts 52.
  • FIGS. 5 and 6 show a further embodiment of a rolling device 61 which has two rollers 62 and 66 arranged opposite each other for the flat rolling of longitudinal shafts 72 formed in a rolling stock 71.
  • the roller 62 has two obliquely arranged to the rotation axis 64 of the roller 62 flat rolling areas 63, which are arranged at an angle to each other.
  • the roller 66 has two obliquely arranged to the rotation axis 68 of the roller 66 flat rolling areas 67, which are also arranged at an angle to each other.
  • the flat rolling areas 63 of the roller 62 and the flat rolling areas 67 of the roller 66 each have a smooth surface and are each aligned parallel to each other.
  • a free space 69 is provided, which extends between the obliquely arranged flat rolling regions 63 and 67, respectively.
  • the lateral extension of the thickness-reduced region 73 can be compensated inwardly into the free space 69 by lowering a section 79 of the rolling stock 71.
  • the free ends of the rolling stock 71 were bent.
  • the rolling stock 71 is partially reduced in thickness to the desired dimension, the extension of the region 73 being compensated laterally or outwardly, as indicated schematically by the arrows 77 in FIG.
  • the sheet metal strip 71 is converted with the partially reduced in thickness region 73 to the desired profile, such as a C-shaped mounting rail.
  • the thickness-reduced regions 73 in this example come to lie in the side walls of the resulting C-shaped mounting rail.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP07105752A 2006-04-18 2007-04-05 Méthode de réduction d'épaisseur d'un materiau roulé Withdrawn EP1847333A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610000182 DE102006000182A1 (de) 2006-04-18 2006-04-18 Verfahren zur Dickenreduzierung von einstückigem Walzgut

Publications (1)

Publication Number Publication Date
EP1847333A1 true EP1847333A1 (fr) 2007-10-24

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ID=38222586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07105752A Withdrawn EP1847333A1 (fr) 2006-04-18 2007-04-05 Méthode de réduction d'épaisseur d'un materiau roulé

Country Status (2)

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EP (1) EP1847333A1 (fr)
DE (1) DE102006000182A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018024016A (ja) * 2016-08-05 2018-02-15 Ｊｆｅスチール株式会社 熱間プレス成形品の製造方法
EP3233316A4 (fr) * 2014-12-04 2018-10-31 Metalsa S.A. De C.V. Procédé et système de variation de calibre de bandes métalliques

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240581A (en) * 1924-07-15 1925-10-08 Beckett Laycock & Watkinson An improved process for manufacturing articles of bent plates, sheets, strips and the like
US2352675A (en) * 1941-04-21 1944-07-04 Carl M Yoder Mechanism for shaping sheet metal
GB2017556A (en) * 1978-03-30 1979-10-10 Wuppermann Gmbh Theodor Making metal sections
US4233833A (en) * 1978-06-05 1980-11-18 United States Gypsum Company Method for stretching sheet metal and structural members formed therefrom
DE19747252A1 (de) * 1997-10-25 1999-04-29 Vaw Aluform System Technik Gmb Profiliertes Blech oder Band, Verfahren und Vorrichtung zu seiner Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240581A (en) * 1924-07-15 1925-10-08 Beckett Laycock & Watkinson An improved process for manufacturing articles of bent plates, sheets, strips and the like
US2352675A (en) * 1941-04-21 1944-07-04 Carl M Yoder Mechanism for shaping sheet metal
GB2017556A (en) * 1978-03-30 1979-10-10 Wuppermann Gmbh Theodor Making metal sections
US4233833A (en) * 1978-06-05 1980-11-18 United States Gypsum Company Method for stretching sheet metal and structural members formed therefrom
DE19747252A1 (de) * 1997-10-25 1999-04-29 Vaw Aluform System Technik Gmb Profiliertes Blech oder Band, Verfahren und Vorrichtung zu seiner Herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3233316A4 (fr) * 2014-12-04 2018-10-31 Metalsa S.A. De C.V. Procédé et système de variation de calibre de bandes métalliques
JP2018024016A (ja) * 2016-08-05 2018-02-15 Ｊｆｅスチール株式会社 熱間プレス成形品の製造方法

Also Published As

Publication number Publication date
DE102006000182A1 (de) 2007-10-25

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