WO2016165972A1 - Arbre d'étirage et cylindre d'étirage pour une machine d'étirage de fil - Google Patents

Arbre d'étirage et cylindre d'étirage pour une machine d'étirage de fil Download PDF

Info

Publication number
WO2016165972A1
WO2016165972A1 PCT/EP2016/057390 EP2016057390W WO2016165972A1 WO 2016165972 A1 WO2016165972 A1 WO 2016165972A1 EP 2016057390 W EP2016057390 W EP 2016057390W WO 2016165972 A1 WO2016165972 A1 WO 2016165972A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting means
shaft
drawing roller
sectional area
cross
Prior art date
Application number
PCT/EP2016/057390
Other languages
German (de)
English (en)
Inventor
Rainer BERNT
Fabian KALMUTZKI
Original Assignee
Maschinenfabrik Niehoff Gmbh & Co. Kg
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 Maschinenfabrik Niehoff Gmbh & Co. Kg filed Critical Maschinenfabrik Niehoff Gmbh & Co. Kg
Publication of WO2016165972A1 publication Critical patent/WO2016165972A1/fr

Links

Classifications

    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/14—Drums, e.g. capstans; Connection of grippers thereto; Grippers specially adapted for drawing machines or apparatus of the drum type; Couplings specially adapted for these drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/101—Quick-acting couplings in which the parts are connected by simply bringing them together axially without axial retaining means rotating with the coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/076—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections

Definitions

  • the invention relates to a pull shaft and a drawing roller, which are intended for use in a wire drawing machine, with connecting means for
  • the wire to be drawn is typically passed through an opening in a so-called die, which has a diameter slightly smaller than the diameter of the wire. Then the wire is guided to a drawing roller and at a certain angle,
  • the wire preferably runs in one
  • the wire is set in tension by the rotating drawing roller by the friction between the wire and the surface of the drawing roller and the diameter of the tensioned wire is slightly reduced as it passes through the opening of the drawing die.
  • the wire diameter can be reduced to a desired total value.
  • a plurality of wire sections can also be guided in parallel over the same drawing roller, preferably in separate circular grooves, thereby correspondingly increasing the productivity of the machine.
  • the present invention is not limited to the use of the drawing shaft and the drawing roller in a single-wire or a multi-wire drawing machine.
  • the drawing roller preferably has a cylindrical basic shape and has an axial, continuous or blind bore.
  • a pulling shaft is inserted, which protrudes axially beyond this at one or both ends of the drawing roller and over which the drive of the drawing roller takes place during operation of the drawing machine.
  • the axes of rotation of the drawing shaft and the drawing roller coincide.
  • the pulling shaft and the drawing roller are positively coupled, so that a
  • Driving torque can be transmitted from the pulling shaft to the drawing roller, while the pulling shaft and the drawing roller rotate about their common axis of rotation.
  • Wire drawing machine consisting of the drawing shaft and the drawing roller, is advantageous because the drawing roller can be replaced independently of the drawing shaft, as soon as it is worn.
  • the pulling shaft has an outer connecting means, i. H. a connecting means disposed on the outer surface of the pulling shaft. Accordingly, the drawing roller in its axial bore on an inner connecting means, d. H. one
  • Connecting means which is arranged on the inner surface of the drawing roller.
  • the positive connection between the drawing shaft and the drawing roller is then achieved in that the outer connecting means of the pulling shaft in the inner connecting means of the drawing roller engages. In this way, a driving torque can be transmitted from the pulling shaft to the drawing roller.
  • the positive connection between the drawing shaft and the drawing roller is often realized by a feather key connection.
  • the key is inserted in an axial groove on the outer surface of the pulling shaft and forms the outer
  • Pulling roller forms.
  • the drive torque is then transmitted from the pull shaft via the feather key to the draw roll.
  • the present invention is based on the object, an improved drawing shaft and an improved drawing roller for a wire drawing machine, a combination of such a drawing shaft and drawing roller and a
  • the invention is based on the observation that in conventional
  • Drive unit used feather must have a relatively large extent in the radial direction in order to transmit the drive torque from the pull shaft, which can be very large in a wire drawing machine safely on the drawing roller can.
  • the pull shaft often has a relatively large outer diameter compared to the outer diameter of the
  • Drawing roller ie the drawing roller has only a relatively small wall thickness.
  • the wall of the drawing roller is greatly weakened in the region of the axial groove for receiving the feather key in a feather key.
  • the invention is based on a pull shaft with an outer
  • the outer connecting means of the pulling shaft at at least one point on a convex, non-circular cross-sectional area perpendicular to the axis of rotation of the pulling shaft.
  • the space surrounded by the inner connecting means in the axial bore of the drawing roller according to the invention has a convex, non-circular cross-sectional area perpendicular to at least one point
  • a convex surface is here in the usual mathematical sense a surface without “indentations”, d. H. that for every two arbitrary points in the surface, their connection distance lies entirely within the surface.
  • both the outer connecting means of the pulling shaft and the inner connecting means of the drawing roller have a convex, non-circular profile, by the term “profile” the circumferential line of the cross-sectional area of the respective connecting means is meant.
  • profile the circumferential line of the cross-sectional area of the respective connecting means is meant.
  • the two profiles are convex and thus have no "indentations" in the radial direction, the radial distance between the radially innermost and the radially outermost point of each profile can be chosen very small.
  • the two profiles can also be used for a positive connection between a pulling shaft and a drawing roller when the drawing roller has a small wall thickness, without the wall of the
  • the inner and / or the outer connecting means is formed in each case as an axial portion on the drawing shaft or on the drawing roller, wherein the two sections preferably have the same axial extent and preferably come to lie in the assembled drive assembly in the same axial region. Also, the two convex ones defined above
  • Cross-sectional areas in the region of the two connecting means preferably come to lie in the assembled drive assembly at the same axial location.
  • Connection means within the respective section constant, but can also vary along the axial extent of the respective section, in particular constantly larger or constantly smaller.
  • at least one of the two sections and particularly preferably both sections are conical.
  • the cross-sectional area of the outer connecting means of the drawing shaft or of the inner connecting means of the drawing roller is rotationally symmetrical, ie the cross-sectional area passes through a Rotation about its center, which corresponds to the axis of rotation of the drawing shaft or the drawing roller, by at least an angle which is greater than 0 degrees and less than 360 degrees, seen geometrically in itself over.
  • this angle is 360 degrees / n, where n is a natural number greater than 1. In this case one speaks also of an n-count
  • the cross-sectional area particularly preferably has a three, four, five or sixfold or an n-fold (with n greater than 6)
  • the outer connecting means of the pulling shaft can be arranged in several (with n-fold rotational symmetry in n different)
  • Rotary positions engage in the inner connecting means of the drawing roller, which facilitates the assembly of the drive assembly of the drawing shaft and the drawing roller.
  • the rotational symmetry facilitates the production of the profiles of the connecting means, in particular in a CAD / CAM environment.
  • the circumferential line of the cross-sectional area has no kinks. This has the advantage on the one hand that no notch effect with a concomitant stress concentration at such kinks can occur during the mechanical loading of the connecting means. In addition, in this way the risk of tilting between the two connection means is prevented.
  • the production of the connecting means in this case can be done in a simple manner by grinding, in the inner connecting means in particular by internal cylindrical grinding.
  • the outer surface of the outer connecting means is the Drawing shaft or the inner surface of the inner connecting means of the drawing roller by grinding, in the case of the pulling shaft in particular by external cylindrical grinding and in the case of the drawing roller in particular by internal cylindrical grinding, produced.
  • milling preferably fine milling, or turning, preferably fine turning, as a manufacturing process is possible.
  • the invention also provides a combination of a drawing shaft according to the invention and a drawing roller according to the invention, wherein the above-defined cross-sectional areas of the inner connecting means of the pulling shaft and the outer connecting means of the drawing roller to deviations, which serve to establish a fit between the outer connecting means and the inner connecting means, are essentially the same.
  • the fit is preferably chosen such that the two
  • connecting means have so much game that the pulling shaft can be inserted without effort and without the risk of damage in the drawing roller, and that the two connecting means on the other hand have so little game that the connection is sufficiently strong and the
  • FIG. 1 shows a drawing shaft according to the invention and a drawing roller according to the invention in a perspective oblique view
  • Fig. 2 a cross section of the outer profile of an inventive
  • the drawing roller 2 has on its outer surface a total of 16 circular grooves 5, wherein in each groove 5, a portion of the wire to be drawn (not shown) can be inserted. In this way, the wire sections can not move axially and adjacent wire sections do not touch or damage each other.
  • the drawing roller 2 is preferably designed in several parts and has, as shown in Fig. 1, a roller body and one or more separate sleeves with the grooves 5, preferably in the form of one or more ceramic sleeves, which is pushed onto the roller body and by a screwed lid 8 are secured.
  • the drawing roller 2 may also be formed in one piece and preferably consist of a single ceramic body.
  • the drawing roller 2 is designed to be pushed onto the right cylindrical portion 7 of the pulling shaft 1, so that the rotation axis 13 of the pulling shaft 1 and the rotation axis 14 of the pulling roller 2 coincide, and to be driven by the pulling shaft 1 by means of positive connection means.
  • the drawing roller 2 has an axial bore 6, which is delimited at the right end by a taper and the lid 8 screwed therein.
  • the pulling shaft 1 is in the mounted state thus only on the left side beyond the drawing roller 2, whereby the threading of the wire sections is facilitated in the commissioning of the drawing machine.
  • the pulling shaft 1 is in turn driven by a mounted on its surface, preferably integrally formed with the pulling shaft 1 gear 15 about its axis of rotation 13 rotating.
  • the torque transmission from the pulling shaft 1 to the drawing roller 2 is carried out by an outer connecting means 3 on the pulling shaft 1 with a
  • Cross-sectional area 1 1 (Fig. 2), the edge of which forms the outer profile 9 of the outer connecting means 3, on an inner connecting means 4 in the bore 6 of the drawing roller 2, wherein the surrounded by the inner connecting means 4 Space has a cross-sectional area 12, the edge of which forms the inner profile 10 of the inner connecting means 4.
  • the outer connecting means 3 and the inner connecting means 4 come to rest after pushing the drawing roller 2 on the pulling shaft 1 axially in the same area.
  • the profiles 9, 10 are approximately equal, wherein the inner profile 10 is preferably dimensioned slightly larger than the outer profile 9.
  • the inner profile 10 can also be dimensioned slightly smaller than the outer profile 9.
  • the two profiles 9, 10th be the same size. In this way, either a clearance fit, a press fit or a transition fit between the pull shaft 1 and the drawing roller 2 are possible.
  • Both profiles 9,10 have approximately the shape of a square with outwardly curved side edges and rounded corners.
  • the diameter of the smallest circle circumscribing the profile 9 is denoted d1 and the diameter of the largest circle inscribed in the profile 9 is d2. Accordingly, the diameter of the smallest circle circumscribing the profile 10 is denoted by d3 and the diameter of the largest circle inscribed in the profile 10 is denoted by d4.
  • the ratio d1 / d2 and d3 / d4 is about 1, 1 respectively.
  • the largest diameter of the respective profile 9, 10 is thus each about 10% larger than its smallest diameter. In this way, the wall thickness of the pulling roller 2 and thus the stability of the

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

L'invention concerne un arbre d'étirage (1) et un cylindre d'étirage (2) pour une machine d'étirage de fil. L'arbre d'étirage (1) comporte un moyen de liaison extérieur (3), tandis que le cylindre d'étirage (2) comporte un alésage (6) axial et un moyen de liaison (4) intérieur disposé dans l'alésage (6) axial. Les deux moyens de liaison (3, 4) sont prévus afin d'établir entre eux une liaison par complémentarité de forme, qui est de mise quand les axes de rotation (13, 14) de l'arbre d'étirage (1) et du cylindre d'étirage (2) coïncident et que le moyen de liaison extérieur (3) de l'arbre d'étirage vient en prise avec le moyen de liaison intérieur (4) du cylindre d'étirage (2). Selon l'invention, le moyen de liaison extérieur (3) de l'arbre d'étirage (1) et l'espace formé par le moyen de liaison intérieur (4) dans l'alésage (6) axial du cylindre d'étirage (2) comportent respectivement, en au moins un emplacement, une surface de section transversale (11, 12) convexe de forme non circulaire de manière perpendiculaire par rapport à l'axe de rotation (13, 14) de l'arbre d'étirage (1) ou du cylindre d'étirage (2). Le caractère convexe des deux surfaces de section transversale (11, 12) permet une très petite configuration de la distance radiale entre le point le plus à intérieur radialement et le point le plus à l'extérieur radialement des lignes périphériques (9, 10) de chaque surface de section transversale (11, 12). Ainsi, la liaison par complémentarité de forme peut également être utilisée pour un cylindre d'étirage (2) présentant une petite épaisseur de paroi sans trop affaiblir de manière excessive la paroi du cylindre étireur (2).
PCT/EP2016/057390 2015-04-16 2016-04-05 Arbre d'étirage et cylindre d'étirage pour une machine d'étirage de fil WO2016165972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015004886.4 2015-04-16
DE102015004886.4A DE102015004886A1 (de) 2015-04-16 2015-04-16 Ziehwelle und Ziehwalze für eine Drahtziehmaschine

Publications (1)

Publication Number Publication Date
WO2016165972A1 true WO2016165972A1 (fr) 2016-10-20

Family

ID=55745752

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/057390 WO2016165972A1 (fr) 2015-04-16 2016-04-05 Arbre d'étirage et cylindre d'étirage pour une machine d'étirage de fil

Country Status (2)

Country Link
DE (1) DE102015004886A1 (fr)
WO (1) WO2016165972A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626220A1 (fr) * 1993-05-25 1994-11-30 Maschinenfabrik Niehoff Gmbh & Co. Kg Bloc de tirage pour une machine à tréfiler et procédé pour sa fabrication
WO2010139441A1 (fr) * 2009-05-30 2010-12-09 Piv Drives Gmbh Liaison arbre-moyeu à profil polygonal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626220A1 (fr) * 1993-05-25 1994-11-30 Maschinenfabrik Niehoff Gmbh & Co. Kg Bloc de tirage pour une machine à tréfiler et procédé pour sa fabrication
WO2010139441A1 (fr) * 2009-05-30 2010-12-09 Piv Drives Gmbh Liaison arbre-moyeu à profil polygonal

Also Published As

Publication number Publication date
DE102015004886A1 (de) 2016-10-20

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