DK161570B - METHOD OF CORROWING METALROS - Google Patents
METHOD OF CORROWING METALROS Download PDFInfo
- Publication number
- DK161570B DK161570B DK383385A DK383385A DK161570B DK 161570 B DK161570 B DK 161570B DK 383385 A DK383385 A DK 383385A DK 383385 A DK383385 A DK 383385A DK 161570 B DK161570 B DK 161570B
- Authority
- DK
- Denmark
- Prior art keywords
- corrugation
- corrugating
- pipe
- corrugated
- tool
- Prior art date
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Classifications
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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
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
- B21D15/06—Corrugating tubes transversely, e.g. helically annularly
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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
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
- H01B7/046—Flexible cables, conductors, or cords, e.g. trailing cables attached to objects sunk in bore holes, e.g. well drilling means, well pumps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Insulated Conductors (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacturing Of Electric Cables (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
iin
DK 16157O BDK 16157O B
Opfindelsen angår en fremgangsmåde til korrugering af metal rør, ved hvilken et glat rør, fortrinsvis et længdesømsvejset glat rør, i en kontinuerlig arbejdsgang føres gennem en bøsning, og et korruge-ringsværktøj med en korrugeringsskive, der har en større gennem-5 gangsåbning end det glatte rørs diameter, er lejret frit drejeligt og excentrisk i et drejeligt drevet korrugeringshoved, indgriber med det glatte rør umiddelbart efter bøsningen.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a method for corrugating metal pipes in which a smooth tube, preferably a longitudinally welded smooth tube, is passed through a sleeve in a continuous operation, and a corrugation tool having a corrugation disc having a larger passage opening than the The diameter of the smooth tube is mounted freely pivotally and eccentrically in a rotatably driven corrugated head, engaging with the smooth tube immediately after the bushing.
Fra det tyske fremlæggelsesskrift nr. 1.086.314 kendes en fremgangs-10 måde til fremstilling af korrugerede rør, ved hvilken tyndvæggede metal rør, fortrinsvis sådanne metal rør, som er fremstillet af en lang pladestrimmel ved kontinuerlig deformering til et slidsrør med påfølgende svejsning af slidssømmen, deformeres til et korrugeret rør ved hjælp af en ringformet korrugeringsskive, der ruller på det 15 glatte rørs omkredsflade. Korrugeringen sker skruelinieformet med en bestemt korrugeringsdybde og korrugeringsstigning, ved at korruge-ringsskiven, der bæres af et korrugeringshoved, i dette er anbragt excentrisk i forhold til røraksen og med en bestemt hældningsvinkel i forhold til denne. Ved hjælp af dette apparat er det muligt at 20 fremstille korrugerede rør på økonomisk måde. Med dette apparat kan der imidlertid kun fremstilles korrugerede rør med en forholdsvis flad korrugering. Sådanne korrugerede rør kan rulles op på kabel -tromler og anvendes f.eks. som kapper til elektriske kabler eller som ledningsrør.German Patent Specification No. 1,086,314 discloses a method for producing corrugated tubes in which thin-walled metal tubes, preferably such metal tubes, are made of a long sheet strip by continuous deformation to a slit tube with subsequent welding of the wear seam. , is deformed into a corrugated tube by means of an annular corrugated disc which rolls on the circumferential surface of the smooth tube. The corrugation is helical with a certain depth of corrugation and increase in corrugation, in that the corrugated disk carried by a corrugation head is placed eccentrically in relation to the pipe axis and at a certain angle of inclination relative thereto. By means of this apparatus it is possible to produce corrugated pipes economically. However, with this apparatus only corrugated tubes with a relatively flat corrugation can be produced. Such corrugated pipes can be rolled up on cable drums and used e.g. as sheaths for electrical cables or as wiring.
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Dersom man ved den foran beskrevne fremgangsmåde anvender en korrugeringsskive med en skruelinieformet forløbende deformeringsribbe, kan der ved fremgangsmåden fremstilles såkaldte parallelkorrugerede rør (tysk offentliggørelsesskrift nr. 1.916.357).If a corrugating disc with a helical extending deforming rib is used in the method described above, so-called parallel corrugated tubes can be produced by the method (German Publication No. 1,916,357).
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For at opnå en dybere korrugering har man ved den foran beskrevne fremgangsmåde gennemført korrugeringen under et aksi alt tryk, idet metalrøret set i gennemløbsretningen, f.eks. bremses efter korrugeringen. Da korrugeringsværktøjet, d.v.s. korrugeringsskiven,ved 35 denne fremgangsmåde er fri for kræfter, der påvirker denne i aksial retning, får man en dybere korrugering. Det har imidlertid vist sig, at denne fremgangsmåde fører til vanskeligheder i praksis (tysk patent nr. 2.400.842), idet det ikke er muligt at tilvejebringe konstant bremsekræfter, som er absolut nødvendige til opnåelse af enIn order to obtain a deeper corrugation, the corrugation has been carried out under an axial pressure in the method described above, with the metal tube seen in the flow direction, e.g. brakes after the corrugation. Since the corrugation tool, i.e. the corrugation disk, this method is free of forces which act on it in the axial direction, a deeper corrugation is obtained. However, it has been found that this approach leads to difficulties in practice (German Patent No. 2,400,842), since it is not possible to provide constant braking forces which are absolutely necessary to achieve a
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2 ensartet korrugering.2 uniform corrugation.
Fra tysk fremlægge!sesskrift nr. 19 39 402 kendes endvidere en fremgangsmåde til korrugering af glatte rør ved hjælp af et korru-5 geringsapparat, der består af et om en aksel drejeligt hjul, der ved dets omkreds bærer med ens indbyrdes afstand anbragte korrugerings-værktøjer. Hjulet løber rundt om røret, der skal korrugeres. Røret føres mellem to faste støtter ved hjælp af frit bevægelige lejringsbøsninger. Ved korrugeringsværktøjets arbejdsindgreb med røret 10 udbøjes røret mellem de to lejringer. Udbøjningen af røret sker således ved hjælp af selve korrugeringsværktøjet, d.v.s. at det er det endnu ikke-korrugerede rør, der bøjes ud af fremstillings-retningen. Da det endnu ikke-korrugerede rør er forholdsvis stift, er størrelsen af den mulige udbøjning og dermed også den opnåelige 15 dybde og tæthed af korrugeringen begrænset.Furthermore, German Patent Specification No. 19 39 402 discloses a method for corrugating smooth pipes by means of a corrugating apparatus consisting of a wheel rotatable about a shaft, which at its circumference carries corrugation spaced apart. tools. The wheel runs around the pipe to be corrugated. The pipe is passed between two fixed supports by means of freely moving bearing bushes. During the corrugation tool's working engagement with the tube 10, the tube is deflected between the two bearings. The deflection of the pipe is thus done by means of the corrugation tool itself, i.e. that it is the as-yet-corrugated pipe that bends out of the manufacturing direction. Since the as-yet-corrugated pipe is relatively rigid, the size of the possible deflection and thus also the achievable depth and density of the corrugation is limited.
________ Formålet med opfindelsen er at videreudforme den indledningsvis nævnte fremgangsmåde på en sådan måde, at der kontinuerligt, d.v.s. i større længder, kan fremstilles metalslanger, d.v.s. korrugerede 20 rør med en dyb og tæt korrugering.The purpose of the invention is to further design the method mentioned in the introduction in such a way that continuously, i.e. in larger lengths, metal hoses, i.e. corrugated 20 pipes with a deep and dense corrugation.
Denne opgave løses ifølge opfindelsen ved en fremgangsmåde af den i krav l's indledning angivne art med de i krav l's kendetegnende del angivne ejendommeligheder.This object is solved according to the invention by a method of the kind set out in the preamble of claim 1 with the characteristics specified in the characterizing part of claim 1.
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Undersøgelser af en sådan fremgangsmåde har vist, at korrugerings-skiven under korrugeringen skyder en "bovbølge" foran sig i rørvæggen. Ved udbøjningen af bølgerøret henholdsvis ved bøjning af bølgerøret modsat korrugeringsskivens indvirkningssted understøttes 30 denne "bovbølge". Afbøjningen er afstemt på en sådan måde, at den allerede korrugerede rørdel hele tiden under korrugeringen bøjes på en sådan måde, at korrugeringsskiven og "bovbølgen" befinder sig i en bøjet rørdels trykzone. Da det ifølge opfindelsen er den allerede korrugerede og dermed meget bøjelige del af røret, der udbøjes, kan 35 udbøjningen være større end ved den fra det nævnte tyske fremlæggelsesskrift nr. 19 39 402 kendte fremgangsmåde, hvorved der stilles ekstra materiale til rådighed for korrugeringsskiven, således at derStudies of such a method have shown that during the corrugation the corrugation disk shoots a "bow wave" in front of it in the pipe wall. By the deflection of the corrugated pipe or by deflection of the corrugated pipe opposite to the place of action of the corrugated disc, this "bow wave" is supported. The deflection is tuned in such a way that the already corrugated pipe portion is constantly bent during the corrugation in such a way that the corrugation disc and the "bow wave" are in a pressure zone of a bent pipe. Since, according to the invention, the already corrugated and thus very flexible portion of the tube is deflected, the deflection may be greater than that of the method known from the aforementioned German Patent Specification No. 19 39 402, thereby providing additional material for the corrugating disc. so that there
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3 uden problemer kan gennemføres en dybere korrugering.3 can be accomplished without any deeper corrugation.
Ved en særlig hensigtsmæssig videreudformning af fremgangsmåden ifølge opfindelsen påvirkes det korrugerede rør af en kraft ved 5 rørets modsat korrugeringsskivens indvirkningssted beliggende side.In a particularly convenient further embodiment of the method according to the invention, the corrugated pipe is affected by a force at the side of the pipe opposite the corrugation disk.
Denne kraft sørger for en bøjning af røret mellem bøsningen, der understøtter det glatte rør, og kraftens indvirkningssted. Det er herunder væsentligt, at kraften indvirker på det korrugerede rør i en afstand a på mindst 0,5 D, fortrinsvis 0,8 D, hvor D betegner det 10 glatte rørs udvendige diameter. Excentriciteten e, med hvilken det korrugerede rør bøjes ud af fremstil!ingsretningen, overholder reglen, at e/a er mindre end 1, fortrinsvis mindre end 0,2. Den maksimale afvigelse af udbøjningskraftens angrebspunkt set i omkredsretningen, er alt efter materialet af røret, der skal korru-15 geres, + 30° med et for- eller efterløb ved den modsat korrugeringsskivens indvirkningssted beliggende side af røret. Det har således f.eks. vist sig at være fordelagtigt, dersom udbøjningskraftens angrebspunkt set i korrugeringsskivens omdrejningsretning, ved "bløde materialer", såsom kobber, indstilles mindre end 180° og 20 ved "hårde materialer", såsom stål, rustfrit stål, indstilles større end 180°.This force provides a bend of the tube between the sleeve supporting the smooth tube and the point of impact of the force. It is essential here that the force acts on the corrugated pipe at a distance a of at least 0.5 D, preferably 0.8 D, where D denotes the outer diameter of the smooth tube. The eccentricity e, with which the corrugated tube is bent out of the manufacturing direction, adheres to the rule that e / a is less than 1, preferably less than 0.2. The maximum deviation of the point of attack of the deflection seen in the circumferential direction, depending on the material of the pipe to be corrugated, is + 30 ° with a pre or post at the opposite point of impact of the corrugation disc. Thus, it has e.g. proved to be advantageous if the point of bending force seen in the direction of rotation of the corrugating disk is set less than 180 ° by "soft materials" such as copper and 20 by "hard materials" such as steel, stainless steel.
Opfindelsen angår endvidere et apparat til gennemførelse af fremgangsmåden, der består af en fast anbragt bøsning, der understøtter 25 det glatte rør, samt et i rørets gennemløbsretning efter bøsningen med røret indgribende omløbende korrugeringsværktøj, der består af et drejeligt drevet korrugeringshoved, i hvilket en korrugeringsski-ve er lejret frit drejeligt og excentrisk. Dette apparat udmærker sig ved, at der efter korrugeringshovedet er anbragt et med samme 30 hastighed som korrugeringshovedet omløbende værktøj, der indgriber med det korrugerede rør og udbøjer dette. Værktøjet er hensigtsmæssigt fastgjort til korrugeringshovedet. Til opnåelse af en god føring af røret under udbøjningen, er værktøjet udformet ringformet.The invention further relates to an apparatus for carrying out the method, which consists of a fixed bushing supporting the smooth pipe, and a rotating corrugating tool engaging the pipe after the bushing with the pipe, consisting of a rotatably driven corrugating head -we are camped freely pivotal and eccentric. This apparatus is distinguished by the fact that, after the corrugation head, a tool which is rotating at the same speed as the corrugating head engages with the corrugated pipe and extends it. The tool is conveniently attached to the corrugation head. In order to obtain a good guide of the pipe during the bending, the tool is formed annular.
Ringen er fordelagtigt frit drejeligt lejret i en til korrugerings-35 hovedet fastgjort holder. Derved reduceres friktionskræfterne set i omkredsretningen til et minimum. Det ringformede værktøj er nippe!-agtigt udformet, d.v.s. at indløbsåbningen og udløbsåbningen udvider sig trompetformet. For at værktøjet skal kunne tilpasses optimalt efter rørdiameteren og rørmaterialet, er værktøjet forskydeligt bådeAdvantageously, the ring is freely pivotally mounted in a holder attached to the corrugation head. This reduces the frictional forces seen in the circumferential direction to a minimum. The annular tool is nip-like, i.e. that the inlet opening and outlet opening extend into the trumpet-shaped. In order for the tool to be optimally adapted to the pipe diameter and the pipe material, the tool is slidable both
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4 i omkredsretningen og i radial retning fastgjort til korrugerings-hovedet. Korrugeringsskivens afstand fra værktøjet kan ændres ved hjælp af mel!emlægsringe. Bøsningen kan forskydes i længdeaksial retning inden påbegyndelsen af korrugeringen. Således vælges der 5 fordelagtigt en større afstand fra korrugeringsskiven ved bløde materialer end ved hårde materialer.4 in the circumferential direction and in the radial direction attached to the corrugation head. The distance of the corrugation disc from the tool can be changed by means of mixing rings. The sleeve can be displaced in the longitudinal axial direction prior to the commencement of corrugation. Thus, a greater distance from the corrugation disc is advantageously selected for soft materials than for hard materials.
Opfindelsen er nærmere forklaret ved hjælp af de i fig. 1-3 skematisk viste udførelseseksempler.The invention is explained in more detail with the aid of the embodiment shown in FIG. 1-3 schematically illustrated embodiments.
10 I fig. 1 betegner 1 spolen, fra hvilken metal båndet 2, der skal formes, aftrækkes. Båndet 2 skæres efter mål mellem to ikke viste rundknivpar og deformeres i et deformeringstrin til et slidsrørved hjælp af et valsepar 3. Slidsrørets båndkanter sammensvejses ved 15 hjælp af et svejseapparat 4, fortrinsvis et elektrisk lysbuesvejse-apparat, og det nu lukkede men endnu glatte rør gribes derefter af en udtrækker 5 og føres til korrugeringsværktøjet 6. Som udtrækker anvendes fortrinsvis en såkaldt spændetangudtrækker, som kendes fra beskrivelsen til tysk patent nr. 1.164.355. Det af korrugerings- 20 værktøjet 6 udtrædende korrugerede rør 7 bøjes, som det senere beskrives nærmere, ud af fremstillingsretningen ved hjælp af et omløbende værktøj 8. Det korrugerede rør 7 kan derefter oprulles på en sædvanlig kabeltromle 9.10 In FIG. 1 represents 1 the coil from which the metal band 2 to be formed is pulled. The belt 2 is cut to measure between two pairs of circular cutters not shown and is deformed in a deformation step to a slit tube by means of a roller pair 3. The belt edges of the slit tube are welded by means of a welding apparatus 4, preferably an electric arc welding apparatus, and the now closed but still smooth tube. is then gripped by an extractor 5 and guided to the corrugation tool 6. As an extractor, a so-called clamp extractor, known from the specification of German Patent No. 1,164,355, is preferably used. The corrugated pipe 7 emerging from the corrugating tool 6 is bent, as will be described below, out of the manufacturing direction by means of a circular tool 8. The corrugated pipe 7 can then be wound onto a conventional cable drum 9.
25 Korrugeringsapparatet og udbøjningsværktøjet er vist i større målestok i fig. 2 og 3. Korrugeringshovedet 6 understøttes over et kugleleje 10 på en faststående føringsbøsning 11. Føringsbøsningen II består af en gi idebøsning 11a, en pasbøsning 11b og en yderbøsning 11c, som er fast forbundet med maskinhuset.The corrugation apparatus and the deflection tool are shown on a larger scale in FIG. 2 and 3. The corrugation head 6 is supported over a ball bearing 10 on a fixed guide sleeve 11. The guide sleeve II consists of an idle bushing 11a, a pass bushing 11b and an outer bushing 11c which is firmly connected to the machine housing.
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Korrugeringshovedet 6 drives på ikke nærmere vist måde drejeligt og bærer ved sin endeflade et hus 12, i hvilket korrugeringsskiven 13 er fastgjort. Korrugeringsskiven 13 er fastgjort i en ringbøsning 14, der over et kugleleje 15 er drejeligt lejret i huset 12. Da 35 korrugeringsskiven 13 er lejret drejeligt og excentrisk i forhold til røraksen, ruller den under drejningen af korrugeringshovedet 6 på det glatte rørs overflade og frembringer defved en korrugering, der i tilfælde af en ringformet korrugeringsskive 13 forløber skruel inieformet. Dersom man anvender en korrugeringsskive med enThe corrugation head 6 is not pivotally driven and carries at its end surface a housing 12 into which the corrugation disc 13 is secured. The corrugation disc 13 is fixed in a ring bush 14 which is pivotally mounted over a ball bearing 15 in the housing 12. As the corrugation disc 13 is pivotally and eccentrically relative to the pipe axis, it rolls during the rotation of the corrugation head 6 on the smooth tube surface and produces defved a corrugation which, in the case of an annular corrugated disc 13, extends helically. If one uses a corrugated disc with one
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5 skruelinieformet forløbende deformeringsribbe, får man en ringformet korrugering.In the case of helically extending deforming ribs, an annular corrugation is obtained.
Ved endesiden af huset 12 er der anbragt et værktøj 8, der bøjer det 5 korrugerede rør 7 ud af fremstil!ingsretningen. Værktøjet 8 består af en flangeagtig del 16, der under indskydning af en skive 17, der forskydeligt i radial retning og i omkredsretningen er fastgjort til huset 12. I det indre af delen 16 er der anbragt en bøsning 18, hvis indvendige boring udvides trompetformet mod enderne.Afstanden mellem 10 bøsningen 18 og korrugeringsskiven 13 kan ændres ved hjælp af mel lemiægsringe 19. Værktøjet 8 er fastgjort til huset 12 på en sådan måde, at det omløber excentrisk i forhold til korrugerings-hovedets midterakse og dermed i forhold til det glatte rørs midterakse og derved til stadighed føjer det korrugerede rør 7 ud fra 15 midteraksen. Korrugeringsskiven 13's excentricitet og værktøjet 8's excentricitet er nøjagtigt modsat hinanden, således at der på grund af bøjningen af det korrugerede rør 7 står mere materiale til rådighed for korrugeringsskiven 13 til korrugeringsdeformeringen, således at en dybere korrugering er mulig. Afstanden a mellem 20 korrugeringsskiven 13 og bøsningen 8, d.v.s. afstanden mellem korrugeringsskiven 13's og bøsningen 18's midterlinier er afhængig af det glatte rørs udvendige diameter D og bør være mindst 0,5 D.At the end side of the housing 12 is provided a tool 8 which bends the corrugated pipe 7 out of the manufacturing direction. The tool 8 consists of a flange-like part 16 which, during insertion of a disc 17, which is displaceably fixed in the radial direction and in the circumferential direction to the housing 12. In the interior of the part 16, a sleeve 18 is provided, the inner bore of which is expanded trumpet-shaped towards The distance between the bushing 18 and the corrugating disc 13 can be changed by means of flour-bearing rings 19. The tool 8 is fixed to the housing 12 in such a way that it orbits eccentrically with respect to the central axis of the corrugated head and thus with respect to the smooth tube. center axis and thereby continuously adding the corrugated tube 7 from the 15 center axis. The eccentricity of the corrugated disc 13 and the eccentricity of the tool 8 are exactly opposite to each other, so that due to the bending of the corrugated tube 7 more material is available for the corrugation disc 13 for the corrugation deformation, so that a deeper corrugation is possible. The distance a between the corrugation disc 13 and the bush 8, i.e. the distance between the center lines of the corrugating disc 13 and the bush 18 is dependent on the outer diameter D of the smooth tube and should be at least 0.5 D.
Det har vist sig, at en afstand på 1-1,5 D er særlig fordelagtig. Endvidere er den vinkel, med hvilken det korrugerede rør 7 bøjes ud 25 af midteraksen, af væsentlig betydning for opnåelsen af en god og dyb korrugering. Da selve vinklen er vanskelig at måle, tager man til dette mål forholdet mellem værktøjet 8's excentricitet e og afstanden a til hjælp, og dette forhold bør være mindre end 1 og fortrinsvis lille i størrelsesordenen 0,15. Excentriciteten e er 30 afstanden af værktøjet 8's midterakse fra korrugeringshovedet 6's midterakse.It has been found that a distance of 1-1.5 D is particularly advantageous. Furthermore, the angle at which the corrugated pipe 7 is bent outwardly 25 of the center axis is of significant importance in obtaining a good and deep corrugation. Since the angle itself is difficult to measure, the ratio of the eccentricity e of the tool 8 to the distance a is taken for this purpose, and this ratio should be less than 1 and preferably small in the order of 0.15. The eccentricity e is the distance of the center axis of the tool 8 from the center axis of the corrugation head 6.
Bøsningen 18 er hensigtsmæssigt frit drejeligt lejret i delen 16 ved hjælp af et kugleleje.The sleeve 18 is suitably freely rotatably mounted in the part 16 by means of a ball bearing.
35 I fig. 3 ses et snit efter linien A-A. Både korrugeringsskiven 13's og bøsningen 18's indgrebspunkter med røret 7 ligger i aksen Z og er altså 180° forskudt i forhold til hinanden. Det viste tilfælde ville være idealet ved et "normalt hårdt materiale". For- eller efter!øbet 635 In FIG. 3 shows a section along line A-A. Both the engagement points of the corrugation disc 13 and the bushing 18 with the tube 7 lie in the axis Z and are thus 180 ° offset relative to each other. The case shown would be the ideal of a "normal hard material". Before or after!
DK 161570 BDK 161570 B
af bøjningen er afhængigt af følgende faktorer: a) rørmaterialets egenskaber b) rørets geometriske dimensioner c) afstanden (a) mellem korrugeringsskiven 13's 5 kraftangrebspunkt og bøsningen 18's angrebspunkt d) værktøjet 8's excentricitet e i forhold til korruge-ringshovedet 6's midterakse.the bending is dependent on the following factors: a) the properties of the pipe material b) the geometric dimensions of the pipe c) the distance (a) between the force attack point of the corrugating disk 13 and the point of attack of the bushing 18 d) the eccentricity e of the tool 8 with respect to the center axis of the corrugation head 6.
por et "blødt materiale", såsom f.eks. kobber, har et efter!øb på 10° vist sig at være fordelagtigt, medens et forløb på 15° har vist sig at være fordelagtigt ved et forholdsvis "hårdt materiale". For-og efterløb er vist med henholdsvis et plustegn og et minustegn i i fig. 3.for a "soft material" such as e.g. copper, a 10 ° drop has been found to be advantageous, while a 15 ° run has been found to be advantageous for a relatively "hard material". Pre and post are shown with a plus sign and a minus sign respectively in FIG. Third
1515
Korrugeringen af røret 7 er kun skematisk vist i fig. 2. I realiteten er korrugeringen væsentligt dybere. Således blev f.eks. et glat kobberrør med en udvendig diameter på 40,4 mm og en vægtykkelse på 0,5 mm deformeret til et korrugeret rør, hvis udvendige diameter 20 ligeledes var 40,4 mm, og hvis indvendige åbning, d.v.s. den indvendige diameter, var 25,7 mm. Stigningen af korrugeringen var 3,1 mm.The corrugation of the tube 7 is only schematically shown in FIG. 2. In reality, the corrugation is substantially deeper. Thus, e.g. a smooth copper pipe having an outside diameter of 40.4 mm and a wall thickness of 0.5 mm deformed into a corrugated pipe whose outer diameter 20 was also 40.4 mm, and whose internal opening, i.e. the internal diameter was 25.7 mm. The increase of the corrugation was 3.1 mm.
25 30 3525 30 35
Claims (12)
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3431120 | 1984-08-24 | ||
| DE3431120A DE3431120C2 (en) | 1984-08-24 | 1984-08-24 | Method and device for corrugating metal pipes |
| DE3436517 | 1984-10-05 | ||
| DE19843436516 DE3436516A1 (en) | 1984-10-05 | 1984-10-05 | MULTI-WIRE ELECTRIC POWER CABLE, IN PARTICULAR SUPPLY CABLE FOR HOLE HOLE UNITS |
| DE19843436517 DE3436517A1 (en) | 1984-10-05 | 1984-10-05 | Multi-core electrical power cable, especially a supply cable for drilling units |
| DE3436516 | 1984-10-05 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK383385D0 DK383385D0 (en) | 1985-08-23 |
| DK383385A DK383385A (en) | 1986-02-25 |
| DK161570B true DK161570B (en) | 1991-07-22 |
| DK161570C DK161570C (en) | 1992-01-27 |
Family
ID=27192277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK383385A DK161570C (en) | 1984-08-24 | 1985-08-23 | METHOD OF CORROWING METALROS |
Country Status (10)
| Country | Link |
|---|---|
| KR (1) | KR910000217B1 (en) |
| AU (1) | AU574786B2 (en) |
| CH (1) | CH675084A5 (en) |
| DK (1) | DK161570C (en) |
| FI (1) | FI84234C (en) |
| FR (1) | FR2569357B1 (en) |
| GB (1) | GB2163373B (en) |
| IT (1) | IT1185270B (en) |
| NL (1) | NL8502331A (en) |
| NO (1) | NO163885C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760334A (en) * | 1996-07-24 | 1998-06-02 | Alcatel Kabel Ag & Co. | Metallic sheath for an electric cable and method of making the same |
| AU4387800A (en) * | 1999-05-05 | 2000-11-21 | Gerald Adrien Joseph Beaulac | Corrugated thick-walled pipe for use in wellbores |
| KR100382285B1 (en) * | 2002-03-20 | 2003-05-09 | Buyng Sang Cho | Method of fabricating flexible wire tube for protecting cable |
| ATE544537T1 (en) * | 2009-12-04 | 2012-02-15 | Nexans | DEVICE FOR CONTINUOUSLY CURVING A METAL TUBE |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB332870A (en) * | 1929-01-18 | 1930-07-31 | Meyer Keller & Cie Ag O | Process and apparatus for the manufacture of corrugated tubes |
| GB791514A (en) * | 1954-02-01 | 1958-03-05 | Gen Electric Co Ltd | Improvements in or relating to machines and methods for corrugating tubes |
| GB1108618A (en) * | 1965-06-01 | 1968-04-03 | Upright Products Ltd | Improvements in or relating to methods of and apparatus for shaping metal tubing |
| DE1916357A1 (en) * | 1969-03-29 | 1971-06-16 | Kabel Metallwerke Ghh | Device for the continuous production of tubes with annular shape corrugation |
| DE1939402B2 (en) * | 1969-08-02 | 1970-12-03 | Felten & Guilleaume Kabelwerk | Method and device for corrugating pipe walls |
| DE2011271A1 (en) * | 1970-03-04 | 1971-09-23 | Universal Metal Hose Co | Helically corrugated tube forming machine |
| DE2126943A1 (en) * | 1971-05-29 | 1972-11-30 | Wieland Werke Ag | Device for forming helical ribs on tubular workpieces |
| DE2853100A1 (en) * | 1978-12-08 | 1980-06-19 | Kabel Metallwerke Ghh | Multicore power cable for immersion pumps - has tubular sheath of welded thin metal strip with tube dia. to wall thickness ratio between 18 and 35 |
| YU42981A (en) * | 1980-08-02 | 1983-09-30 | Kabel Metallwerke Ghh | Device for transforming even tubes to wave-shaped tubes |
-
1985
- 1985-05-13 FR FR8507218A patent/FR2569357B1/en not_active Expired
- 1985-06-05 AU AU43311/85A patent/AU574786B2/en not_active Ceased
- 1985-07-17 IT IT21593/85A patent/IT1185270B/en active
- 1985-08-07 CH CH3380/85A patent/CH675084A5/de not_active IP Right Cessation
- 1985-08-23 DK DK383385A patent/DK161570C/en not_active IP Right Cessation
- 1985-08-23 FI FI853251A patent/FI84234C/en not_active IP Right Cessation
- 1985-08-23 NO NO853326A patent/NO163885C/en unknown
- 1985-08-23 NL NL8502331A patent/NL8502331A/en not_active Application Discontinuation
- 1985-08-23 KR KR1019850006081A patent/KR910000217B1/en not_active IP Right Cessation
- 1985-08-23 GB GB08521209A patent/GB2163373B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK161570C (en) | 1992-01-27 |
| DK383385D0 (en) | 1985-08-23 |
| FR2569357A1 (en) | 1986-02-28 |
| IT8521593A0 (en) | 1985-07-17 |
| FR2569357B1 (en) | 1989-01-20 |
| NO163885C (en) | 1990-08-08 |
| GB2163373B (en) | 1988-03-02 |
| AU4331185A (en) | 1986-02-27 |
| IT1185270B (en) | 1987-11-04 |
| FI853251A0 (en) | 1985-08-23 |
| CH675084A5 (en) | 1990-08-31 |
| GB8521209D0 (en) | 1985-10-02 |
| DK383385A (en) | 1986-02-25 |
| FI84234B (en) | 1991-07-31 |
| KR860001623A (en) | 1986-03-20 |
| AU574786B2 (en) | 1988-07-14 |
| KR910000217B1 (en) | 1991-01-23 |
| FI84234C (en) | 1991-11-11 |
| GB2163373A (en) | 1986-02-26 |
| FI853251L (en) | 1986-02-25 |
| NO163885B (en) | 1990-04-30 |
| NO853326L (en) | 1986-02-25 |
| NL8502331A (en) | 1986-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |