DK157739B - METHOD AND APPARATUS FOR PREPARING A RIBBER. - Google Patents

METHOD AND APPARATUS FOR PREPARING A RIBBER. Download PDF

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Publication number
DK157739B
DK157739B DK311778A DK311778A DK157739B DK 157739 B DK157739 B DK 157739B DK 311778 A DK311778 A DK 311778A DK 311778 A DK311778 A DK 311778A DK 157739 B DK157739 B DK 157739B
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DK
Denmark
Prior art keywords
roller
tool
notch
rib
tube
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Application number
DK311778A
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Danish (da)
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DK157739C (en
DK311778A (en
Inventor
Manfred Saier
Hans-Werner Kaestner
Robert Kloeckler
Original Assignee
Wieland Werke Ag
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Publication of DK311778A publication Critical patent/DK311778A/en
Publication of DK157739B publication Critical patent/DK157739B/en
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Publication of DK157739C publication Critical patent/DK157739C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Extraction Processes (AREA)
  • Forging (AREA)

Description

DK 157739 BDK 157739 B

iin

Opfindelsen angår en fremgangsmåde til fremstilling af et ribberør af den i indledningen til krav 1 angivne art samt et apparat til fremstilling af et ribberør af den i indlednin-5 gen til krav 2 henholdsvis krav 3 angivne art.The invention relates to a method for producing a rib tube of the kind specified in the preamble of claim 1 and an apparatus for producing a rib tube of the kind specified in the preamble of claim 2 and claim 3, respectively.

Ved en fremgangsmåde af den nævnte art efter tysk offentliggørelsesskrift nr. 15 01 656 bliver der kun indført i rørlængderetningen rettede indkærvninger i ribberne. Sådanne indkærv-20 ninger medfører vanskeligheder ved lagring, transport og ind bygning af ribberørene og viser sig med hensyn til varmeover-føringen at være ugunstige. Fra engelsk patentskrift 1092150 kendes ganske vist et rør med bueformet forløbende Y-formede ribber. Dette rør består imidlertid af plast. Den dér beskrevne 25 fremgangsmåde til indkærvning af rørvæggen og tilsluttende trækning af røret kan ikke anvendes ved ribberør til varmevekslere.By a method of the aforesaid type according to German Publication No. 15 01 656, only notches in the length of the tube are directed into the ribs. Such notches cause difficulties in storing, transporting and incorporating the rib pipes and prove to be unfavorable in terms of the heat transfer. It is known from English patent 1092150 that a tube with arcuate extending Y-shaped ribs is known. However, this tube is made of plastic. The method described therein for notching the pipe wall and subsequently pulling the pipe can not be used in rib pipes for heat exchangers.

Det er derfor formålet med opfindelsen at anvise en fremgangs-20 måde af den nævnte art, der er således udformet, at et ribbe rør til varmevekslere med Y-formede rundtgående ribber kan fremstilles i én arbejdsgang.It is therefore an object of the invention to provide a method of the kind mentioned, which is designed so that a rib tube for heat exchangers with Y-shaped circumferential ribs can be produced in one operation.

Dette formål bliver opnået ved den i den kendetegnende del 25 af patentkrav 1 angivne fremgangsmåde ifølge opfindelsen.This object is achieved by the method according to the invention according to the characterizing part 25 of claim 1.

Udglatningen er her nødvendig for at forberede ribberne til indkærvningsprocessen. En udglatning af 5-15% af den oprindelige ribbehøjde er i den forbindelse hensigtsmæssig.Smoothing is needed here to prepare the ribs for the carving process. A smoothing of 5-15% of the original rib height is appropriate in this connection.

3030

Ved fremgangsmådeskridtene ifølge opfindelsen bliver en for kraftig omformning af ribbefoden undgået, så at der mellem de Y-formet udformede ribber bliver opretholdt regelmæssige hulrum, hvorhos hulrummene, især spaltebredderne, er definere-35 de og kontinuerligt kan ændres.In the process steps according to the invention, excessive force of the rib foot is avoided so that regular cavities between the Y-shaped ribs are maintained, whereby the cavities, especially the gap widths, are defined and continuously changed.

Det er endvidere formålet med opfindelsen at anvise et valseapparat til udøvelse af fremgangsmåden ifølge opfindelsen.It is further the object of the invention to provide a rolling apparatus for carrying out the method according to the invention.

22

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Udformningen af et apparat til udøvelse af fremgangsmåden er afhængigt af, om røret skal dreje ved stationært valsehoved, eller om valsehovedet skal dreje ved et kun aksialt 5 forskydeligt rør.The design of an apparatus for carrying out the method depends on whether the tube is to rotate at a stationary roller head or whether the roller head is to rotate at an axially displaceable tube only.

Med drejende rør bliver der taget udgangspunkt i et apparat ifølge indledningen til patentkrav 2 (tysk offentliggørelsesskrift nr. 15 01 656). Apparatet ifølge opfindelsen er ejen-20 dommeligt ved de i krav 2 angivne træk. Ved ribbedeling skal altid forstås afstanden fra ribbe til ribbe.Turning pipes are based on an apparatus according to the preamble of claim 2 (German Patent Publication No. 15 01 656). The apparatus of the invention is distinctive in the features of claim 2. Rib division must always be understood as the distance from rib to rib.

Med drejende valsehoved bliver der taget udgangspunkt i et apparat ifølge indledningen til krav 3.With a rotating roller head, an apparatus according to the preamble of claim 3 is taken as a starting point.

25 Apparatet ifølge opfindelsen er ejendommeligt ved de i den kendetegnende del af krav 3 angivne træk. Klemholderen deltager derved i rørets fremføringsbevægelse, hvorhos det enten bliver slæbt tilbage fra det udløbende rør eller bliver bevæget af et eget drev.The apparatus according to the invention is characterized by the features specified in the characterizing part of claim 3. The clamping holder thereby participates in the conveying movement of the pipe, whereby it is either dragged back from the outlet pipe or is moved by its own drive.

2020

Med det beskrevne apparat bliver kun ribbemidten sikkert ramt af kærvvalsen.With the apparatus described, only the rib center is safely hit by the notch roller.

På fordelagtig måde er der mellem valseværktøjet og udglat-25 ningsrullen tilvejebragt en afstandsskive.Advantageously, a spacer is provided between the rolling tool and the smoothing roller.

Ifølge en foretrukken udførelsesform for opfindelsen er der tilvejebragt tre i forhold til hinanden 120° forskudte værktøj sho 1 der e.According to a preferred embodiment of the invention, there are provided three relative to one another 120 ° offset tool sho 1 which e.

30 I den forbindelse er det med henblik på en guns-tig udformning af den Y-formede ribbe anbefalelsesværdigt, når - set i rørets drejningsretning - kærvvalsen i den første værktøjsholder har en kærvvinkel på mellem 60° og 100°, og kærvvalsen i den 35 anden værktøjsholder har en større kærvvinkel mellem 80° og 130°.In this regard, for a favorable design of the Y-shaped rib, it is advisable when - in the direction of rotation of the tube - the notch roller in the first tool holder has an notch angle of between 60 ° and 100 °, and the notch roller in it 35 other tool holder has a larger notch angle between 80 ° and 130 °.

For at kærvvalsen til enhver tid skal ramme midt på den udglattede ribbe, er der fortrinsvis mellem den cylindriske glattevalse og kærvvalsen anbragt en korrektionsskive.In order for the notch roller to strike at all times in the middle of the smoothed rib, a correction disc is preferably arranged between the cylindrical smooth roll and the notch roller.

33

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Pra U.S. patent nr. 33 83 892 kendes ganske vist et valseapparat hvor der efter valseværktøjet følger en glattevalse, men kombinationen af glattevalse og kærvvalse er dog ikke vist.Pra U.S. Patent No. 33 83 892 is known to have a rolling apparatus in which, after the rolling tool, a smooth roller follows, but the combination of smooth roller and notch roller is not shown.

55

Opfindelsen beskrives i det følgende nærmere ved hjælp af et udførelseseksempel under henvisning til tegningen, hvor fig. 1 viser et ved fremgangsmåden ifølge opfindelsen frem-10 stillet Y-ribberør i længdesnit, fig. 2 et tilsvarende Y-ribberør delvis gennemskåret, fig. 3 et apparat ifølge opfindelsen til fremstilling af et ^5 Y-ribberør, fig. 4 skematisk indretningen af værktøjsholderen ved et apparat ifølge fig. 3 og 20 fig. 5 dannelsen af ribbeformen ved et apparat ifølge fig.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described by way of example with reference to the accompanying drawings, in which: FIG. 1 is a longitudinal sectional view of a Y-rib tube made according to the invention; FIG. 2 is a partially cut-away Y-rib tube, FIG. 3 shows an apparatus according to the invention for the manufacture of a 5 Y-rib tube; FIG. 4 schematically shows the arrangement of the tool holder by an apparatus according to FIG. 3 and 20 FIG. 5 shows the formation of the rib mold by an apparatus according to FIG.

3 og 4.3 and 4.

Fig. 1 henholdsvis 2 viser et Y-ribberør 1 i længdesnit henholdsvis i delsnit. De Y-formede ribber 2 løber skruelinieformet 25 rundt. Ribbernes 2 fod 3 står også radialt ud fra rørvæggen 4, medens ribbeenderne 5 er bøjet således ud til begge sider, at der er dannet indsnævrede spalter 6 (sammenlign den øvre spaltebredde A i fig. 2). Afstanden mellem kanterne af ribberne 2 ændrer sig kontinuerligt, således at der mellem ribberne 30 2 i hovedsagen forekommer afrundede hulrum.FIG. 1 and 2 respectively show a Y-rib tube 1 in longitudinal and partial sections respectively. The Y-shaped ribs 2 run helical 25 around. The foot 3 of the ribs 2 also radially protrude from the tube wall 4, while the rib ends 5 are bent so that both slits 6 are formed (compare upper gap width A in Fig. 2). The distance between the edges of the ribs 2 changes continuously so that rounded cavities 30 2 are generally rounded.

Apparatet ifølge fig. 3 til fremstilling af et Y-ribberør 1 kan anvendes med drejende rør eller med drejende valsehoved.The apparatus of FIG. 3 for making a Y-rib tube 1 can be used with rotating tubes or with rotating head.

I det følgende bliver funktionsmåden med drejende rør beskrevet. 35In the following, the operation of pipes is described. 35

Ved apparatet ifølge fig. 3 er der i hvert af et antal værktøjsholdere 9 integreret henholdsvis et valseværktøj 7, en cylindrisk glatterulle 11 og en kærvrulle 13 (her er kun vist én værktøjsholder 9). Svarende til fig. 4 er der to yderligere 4In the apparatus of FIG. 3, in each of a plurality of tool holders 9, a rolling tool 7, a cylindrical smooth roller 11 and a notch roller 13 are respectively integrated (here only one tool holder 9 is shown). Similar to FIG. 4 there are two additional 4

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værktøjsholdere 9, hver af dem anbragt forskudt 120° i forhold til hinanden langs omkredsen af røret 1. Værktøjsholderne 9 kan indstilles radialt. Der kan f.eks. også benyttes fire 5 eller seks værktøjsholdere 9. Værktøjsholderne 9 er igen anbragt i et stationært (ikke vist) valsehoved.tool holders 9, each of them disposed offset 120 ° relative to each other along the circumference of the tube 1. The tool holders 9 can be adjusted radially. For example, four or six tool holders 9 are also used. The tool holders 9 are again placed in a stationary (not shown) roller head.

Det i pilretningen indløbende glatte rør 1' bliver ved hjælp af de ved omkredsen af røret 1' anbragte drevne valseværk-tøjer 7, hvis akse forløber skråt i forhold til røraksen, forskudt under drejningen. Pilretningen ifølge fig. 4 antyder drejeretningen for røret 1'.The smooth tube 1 'running in the arrow direction is displaced by means of the driven rolling tools 7 arranged at the circumference of the tube 1', the axis of which extends obliquely to the tube axis. The arrow direction of FIG. 4 indicates the direction of rotation of the pipe 1 '.

Valseværktøjerne 7 består på i og for sig kendt måde af ved siden af hinanden anbragte valseskiver 8.The rolling tools 7 consist in a manner known per se, adjacent to each other rollers 8.

De centrisk anbragte valseværktøjer 7 former på kendt måde ribberne 2' af den ved hjælp af en dornstang 10 understøttede rørvæg 4. Derved foregår der så i et forreste område (indtræk-2Q ningsområdet) en diameterformindskelse. I et midterste område (færdigvalseområdet) sker udvalsningen af de skruelinieformet omløbende ribber 2'.The centrally positioned rolling tools 7 in a known manner form the ribs 2 'of the pipe wall 4 supported by a mandrel rod 10, thereby reducing in diameter in the anterior region (the retraction region). In a middle region (the final roll region), the helical circular ribs 2 'are rolled out.

Ved hjælp af glattevalsen 11 bliver der opnået en udglatning 25 af enderne af ribberne 2', således at enderne af ribberne 2" ligger på en tænkt med rørmidteaksen 12 koaksial cylinderflade. Den efterkoblede kærvvalse 13 indkærver ribberne 2" i rørets 1' skruelinieretning og bøjer dem samtidigt ud til siden, således at ribberne 2 med Y-formet tværsnit fremkommer 30 (se fig. 5).By means of the smoothing roller 11, a smoothing 25 of the ends of the ribs 2 'is obtained, such that the ends of the ribs 2 "lie on a coaxial cylinder surface of the pipe center axis 12. The after-coupled notch roller 13 inserts the ribs 2" in the helical direction of the pipe 1' at the same time, outwards to the side so that the ribs 2 with Y-shaped cross-section appear 30 (see Fig. 5).

De efterfølgende målangivelser angår forarbejdningen af et glat rør med en udvendig diameter på 19 mm og en vægtykkelse på.1,45 mm.The following measurements indicate the processing of a smooth tube with an outside diameter of 19 mm and a wall thickness of 1.45 mm.

Ved hjælp af indtil 25 efter hinanden anbragte valseskiver 8 (af pladsmæssige årsager er kun ti vist) bliver ribberne 2' udformet. Diameteren af valseskiverne 8 udgør ca. 50 mm 35 5By means of up to 25 consecutive roll discs 8 (for spatial reasons only ten are shown), the ribs 2 'are formed. The diameter of the rolling discs 8 is approx. 50 mm 35 5

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og forøges i pilretningen. Svarende til den ønskede ribbedeling på 1,35 mm er valseskiverne 1,3 mm tykke. Med tiltagende diameter af valseskiverne 8 bliver radius for deres spids 5 større og flankevinklen mindre.and increases in the direction of the arrow. Corresponding to the desired rib split of 1.35 mm, the roller discs are 1.3 mm thick. With increasing diameter of the roller discs 8, the radius of their tip 5 becomes larger and the flank angle smaller.

Mellem den sidste valseskive og den cylindriske glattevalse 11 er til enhver tid anbragt en afstandsskive 14 på 0,7 mm1s tykkelse. Derved svarer tykkelsen af afstandsskiven 14 omtrent jq til halvdelen af ribbedelingen på 1,35 mm. Glattevalsen 11 har en diameter, som svarer til diameteren af den første valseskive, og en tykkelse på 1,3 mm.Between the last roller disk and the cylindrical smooth roller 11, a spacer disk 14 of 0.7 mm thickness is provided at all times. Thereby, the thickness of the spacer 14 corresponds approximately to one-half of the 1.35 mm rib pitch. The smooth roll 11 has a diameter corresponding to the diameter of the first roll disc and a thickness of 1.3 mm.

Efter glattevalsen 11 følger en kærvvalse 13 (tykkelse ligeledes 1,3 mm). Svarende til indretningen ifølge fig. 4 har kærvvalsen 13 i de med I henholdsvis II betegnede værktøjsholdere 9 en tiltagende diameter, som ligger nogle tiendedele af en millimeter over diameteren af glattevalsen 13. I den med III betegnede værktøjsholder 9 er der ikke anbragt nogen kærvvalse 20 13. Kærvvinklen α for den første kærvvalse 13 udgør 90°, kærv valsen α for den anden kærvvalse 13 udgør 120°.Following the smooth roll 11 is a notch roller 13 (thickness also 1.3 mm). Similar to the device of FIG. 4, the notch roll 13 in the tool holders 9 referred to in I and II, respectively, has an increasing diameter which is some tenths of a millimeter above the diameter of the smooth roll 13. In the tool holder 9 denoted by III no notch roll 20 is provided. first notch roll 13 constitutes 90 °, notch roll α for the second notch roll 13 constitutes 120 °.

Por at kærvvalserne kan foretage en indkærvning midt i de af glattevalsen 11 udglattede ribber, er der i det forelig-25 gende tilfælde mellem glattevalsen 11 og kærvvalsen 13 anbragt korrektionsskiver 15 af nogle få tiendedele millimiters tykkelse.In order that the notch rollers can make a notch in the middle of the ribs smoothed by the smooth roll 11, in the present case, between the smooth roll 11 and the notch roll 13, correction discs 15 of a few tenths of a millimeter thickness are arranged.

Materialet i valseskiverne 8, glattevalsen 11 og kærvvalsen 30 13 er en højtlegeret værktøjsstål.The material of the roller discs 8, the smooth roller 11 and the notch roller 30 13 is a highly alloyed tool steel.

De radialt indstillelige valseværktøjer 7 bliver drevet med et begyndelsesomdrejningstal på 150-400 omdr./minut og med et med faktoren 3 til 4 gange højere slutomdrejningstal.The radially adjustable roller tools 7 are driven with an initial speed of 150-400 rpm and with a factor of 3 to 4 times higher final speed.

Med henblik på at variere spaltebredden A for Y-ribberøret 1 kan ved en valgt radial indstilling af værktøjsholderen 9 diameteren og/eller kærvvinklen α for kærvvalsen 13 ændres.In order to vary the gap width A of the Y-rib tube 1, the diameter and / or notch angle α of the notch roll 13 can be changed by a selected radial adjustment of the tool holder 9.

3535

Claims (7)

2. Apparat til udøvelse af fremgangsmåden ifølge krav 1, og med mindst to ved periferien af røret i forhold til hinanden 10 forskudte og i et stationært valsehoved anbragte indstillelige værktøjsholdere (9), som hver har et af flere valseskiver (8) bestående drevet valseværktøj (7) med en akse, der ligger skråt i forhold til røraksen (12), og hvor der findes mindst én kærvvalse (13), kendetegnet ved, at der i mindst 15 én værktøjsholder (9) i valseværktøjet (7) i afstanden svarende til ca. (n+0,5) gange ribbedelingen (tR) [n = 0,1,2,3,...] følger en cylindrisk glattevalse (11), hvis tykkelse omtrent svarer til ribbedelingen (tR), og at der i mindst én værktøjsholder (9) er tilvejebragt en kærvvalse (13), der har en tyk- 20 kelse omtrent som ribbedelingen (t-.), og hvis afstand fra K valseværktøjet (7) svarer til summen af de ca. (n+0,5) gange ribbedelingen (t^) og tykkelsen af glattevalsen (11).Apparatus for carrying out the method according to claim 1, and with at least two displaceable tool holders (9) at one of the periphery of the tube relative to each other 10, and each having one of a plurality of rolling discs (8) consisting of driven rolling tools. (7) having an axis inclined relative to the pipe axis (12), and wherein there is at least one notch roller (13), characterized in that at least 15 one tool holder (9) in the roller tool (7) corresponds in the distance to approx. (n + 0.5) times the rib section (t R) [n = 0,1,2,3, ...] follows a cylindrical smooth roller (11), the thickness of which corresponds approximately to the rib section (t R) and that at least one tool holder (9) is provided with a notch roller (13) having a thickness approximately equal to the rib cutting (t-), and whose distance from the K rolling tool (7) corresponds to the sum of the approx. (n + 0.5) times the rib pitch (t ^) and the thickness of the smooth roll (11). 3. Apparat til udøvelse af fremgangsmåden ifølge krav 1, og 25 med mindst to ved periferien af røret (1') i forhold til hin anden forskudte og i et valsehoved anbragte, radialt indstillelige værktøjsholdere (9), som hver har et af flere valseskiver (8) bestående værktøj (7) med en akse, der ligger skråt i forhold til røraksen (12), hvor valsehovedet er drejeligt 30 lejret og kan drives i rørets periferiretning, og hvor der er mindst én kærvvalse (13), kendetegnet ved, at der i mindst én v&rktøjsholder (9) i valseværktøjet (7) i afstanden svarende til ca. (n+0,5) gange ribbedelingen (tR) [n = 0,1,2,3,...] følger en cylindrisk glattevalse (11), hvis 35 tykkelse omtrent svarer til ribbedelingen (t_), at der i mindst én værktøjsholder (9) er tilvejebragt en kærvvalse (13), som har en tykkelse omtrent som ribbedelingen (tn), og hvis afstand K DK 157739B fra valseværktøjet (7) svarer til summen af de ca. (n+0,5) gange ribbedelingen (tB) og tykkelsen af glattevalsen (11)/ og at der findes en klemholder for røret.Apparatus for carrying out the method according to claims 1 and 25 with at least two at the periphery of the tube (1 ') relative to the other displaced and radially adjustable tool holders (9), each having one of several rollers (8) existing tool (7) having an axis inclined relative to the tube axis (12), wherein the roller head is pivotally mounted and operable in the circumferential direction of the tube and wherein there is at least one notch roller (13) characterized by that in at least one tool holder (9) in the rolling tool (7) in the distance corresponding to approx. (n + 0.5) times the rib pitch (t R) [n = 0,1,2,3, ...] follows a cylindrical smooth roller (11), the thickness of which is approximately equal to the rib split (t_), that at least one tool holder (9) is provided with a notch roller (13) which has a thickness approximately the size of the rib (tn) and whose distance K DK 157739B from the rolling tool (7) corresponds to the sum of the approx. (n + 0.5) times the rib pitch (tB) and the thickness of the smooth roll (11) / and that a clamp holder is provided for the tube. 4. Apparat ifølge krav 2 eller 3, kendetegnet ved, at der mellem valseværktøjet (7) og glattevalsen (11) er anbragt en afstandsskive (14).Apparatus according to claim 2 or 3, characterized in that a spacer (14) is arranged between the rolling tool (7) and the smooth roll (11). 5. Apparat ifølge et af kravene 2-4, kendetegnet 10 ved/ at det har tre omkring 120° i forhold til hinanden for skudte værktøjsholdere (9).Apparatus according to any one of claims 2-4, characterized in that it has three about 120 ° to each other for shot tool holders (9). 6. Apparat ifølge krav 5, kendetegnet ved, at kærv-vinklen (a) for kærvvalsen (13) i den første værktøjsholder 15 (9/1) ligger mellem 60° og 100°.Apparatus according to claim 5, characterized in that the notch angle (a) of the notch roller (13) in the first tool holder 15 (9/1) is between 60 ° and 100 °. 7. Apparat ifølge krav 6, kendetegnet ved, at kærv-vinklen for kærvvalsen (13) i den anden værktøjsholder (9/II) er større end den i den første værktøjsholder (9/1) og ligger 20 mellem 80° og 130°).Apparatus according to claim 6, characterized in that the notch angle of the notch roller (13) in the second tool holder (9 / II) is greater than that in the first tool holder (9/1) and lies between 80 ° and 130 °. ). 8. Apparat ifølge et af kravene 2-7, kendetegnet ved, at der mellem den cylindriske glattevalse (11) og kærvvalsen (13) er anbragt en korrektionsskive (15). 25 30 35Apparatus according to one of claims 2-7, characterized in that a correction disc (15) is arranged between the cylindrical smooth roller (11) and the notch roller (13). 25 30 35
DK311778A 1977-12-28 1978-07-11 METHOD AND APPARATUS FOR PREPARING A RIBBER. DK157739C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2758527 1977-12-28
DE2758527A DE2758527C2 (en) 1977-12-28 1977-12-28 Method and device for manufacturing a finned tube

Publications (3)

Publication Number Publication Date
DK311778A DK311778A (en) 1979-06-29
DK157739B true DK157739B (en) 1990-02-12
DK157739C DK157739C (en) 1990-07-23

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DK311778A DK157739C (en) 1977-12-28 1978-07-11 METHOD AND APPARATUS FOR PREPARING A RIBBER.

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JP (1) JPS54100559A (en)
AT (1) AT358614B (en)
DE (1) DE2758527C2 (en)
DK (1) DK157739C (en)
ES (1) ES472258A1 (en)
FR (1) FR2413626A1 (en)
GB (1) GB2011602A (en)
IT (1) IT1105437B (en)
SE (1) SE445899B (en)

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DE2758526C2 (en) * 1977-12-28 1986-03-06 Wieland-Werke Ag, 7900 Ulm Method and device for manufacturing a finned tube
DE2803274A1 (en) * 1978-01-26 1979-08-02 Wieland Werke Ag FIBER TUBE AND THE METHOD AND DEVICE FOR THE PRODUCTION THEREOF
DE2803273A1 (en) * 1978-01-26 1979-08-02 Wieland Werke Ag FIBER TUBE AND THE METHOD AND DEVICE FOR THE PRODUCTION THEREOF
JPS6024737B2 (en) * 1980-06-26 1985-06-14 ドネプロペトロブスキイ ゴルニイ インステイチユ−ト イム．アルテマ Method and tool for forming an elastic screw having an internally sealed helical cavity on a workpiece
IT1198211B (en) * 1985-12-02 1988-12-21 Carrier Corp METHOD AND APPARATUS TO PRODUCE EXTERNALLY PERFECTED PIPES USING MULTIPLE HELICAL PITCH PRINCIPLES
DE4404357C2 (en) * 1994-02-11 1998-05-20 Wieland Werke Ag Heat exchange tube for condensing steam
JP2008045868A (en) * 2006-07-21 2008-02-28 Sumitomo Light Metal Ind Ltd Heat exchanger for water heater, and its manufacturing method
CN110765645B (en) * 2019-11-06 2023-05-23 国网四川省电力公司电力科学研究院 Design method of built-in coil type compressed air heat exchange system
CN115815450B (en) * 2022-12-07 2023-06-02 无锡化工装备股份有限公司 Nanometer fluid self-lubricating outer surface forming equipment and method for three-dimensional fin round tube

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US4159739A (en) * 1977-07-13 1979-07-03 Carrier Corporation Heat transfer surface and method of manufacture
DE2758526C2 (en) * 1977-12-28 1986-03-06 Wieland-Werke Ag, 7900 Ulm Method and device for manufacturing a finned tube
DE2735762C2 (en) * 1977-08-09 1983-11-24 Wieland-Werke Ag, 7900 Ulm Finned tube and device for its manufacture

Also Published As

Publication number Publication date
ATA517278A (en) 1980-02-15
IT7850677A0 (en) 1978-08-09
SE445899B (en) 1986-07-28
AT358614B (en) 1980-09-25
DK157739C (en) 1990-07-23
FR2413626A1 (en) 1979-07-27
GB2011602A (en) 1979-07-11
DE2758527C2 (en) 1985-04-25
JPS54100559A (en) 1979-08-08
DE2758527A1 (en) 1979-07-05
SE7808063L (en) 1979-06-29
IT1105437B (en) 1985-11-04
ES472258A1 (en) 1979-10-01
DK311778A (en) 1979-06-29

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