EP1286794B1 - Machine de laminage a froid - Google Patents

Machine de laminage a froid Download PDF

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Publication number
EP1286794B1
EP1286794B1 EP01955205A EP01955205A EP1286794B1 EP 1286794 B1 EP1286794 B1 EP 1286794B1 EP 01955205 A EP01955205 A EP 01955205A EP 01955205 A EP01955205 A EP 01955205A EP 1286794 B1 EP1286794 B1 EP 1286794B1
Authority
EP
European Patent Office
Prior art keywords
rolling
accordance
cold rolling
racks
rolling machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01955205A
Other languages
German (de)
English (en)
Other versions
EP1286794A1 (fr
EP1286794B2 (fr
Inventor
Bernd Kreissig
Otto Brüntrup
Lothar Dr. Ophey
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.)
MAG IAS GmbH Eislingen
Original Assignee
Ex Cell O GmbH
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
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Application filed by Ex Cell O GmbH filed Critical Ex Cell O GmbH
Priority to EP04009469A priority Critical patent/EP1442808B1/fr
Priority to DE20122205U priority patent/DE20122205U1/de
Publication of EP1286794A1 publication Critical patent/EP1286794A1/fr
Application granted granted Critical
Publication of EP1286794B1 publication Critical patent/EP1286794B1/fr
Publication of EP1286794B2 publication Critical patent/EP1286794B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/027—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls by rolling using reciprocating flat dies, e.g. racks
    • 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
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • 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
    • B21H7/14—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knurled articles
    • 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

Definitions

  • the invention relates to a cold rolling machine according to the preamble of claim 1, in particular Roll bar suitable for such cold rolling machines and a method for cold rolling a workpiece.
  • this Workpiece clamping device In such cold rolling machines to be processed Workpiece rotatable between two tips or other Tensioning clamped, this Workpiece clamping device usually a feed axis assigned.
  • the desired profiling of the workpiece takes place via two synchronously counter-rotating Rolling rods simultaneously on the workpiece impinge and this first by friction and later set in rotation by positive engagement. It will the material in the free spaces of the tool, d. H. of the Rolling rods displaced.
  • the height of the ground profile of the rolling rod in the forming area too, so that each tooth of the rolling rod is slightly deeper in the Workpiece is pressed in, as the previous one.
  • To Achieving the full tread depth can be a Kallibrierzone and a relaxation zone, along which the geometry and the surface quality of the workpiece is optimized.
  • This non-cutting cold forming profiles such as Splines (straight or oblique), Spiral gears, oil grooves, threads or knurls is approx. thirty times faster than the machining the profiles.
  • Cold rolled workpieces also offer one higher strength, better surface quality and large Accuracy.
  • the invention has the object, a cold rolling machine and to provide a method of cold rolling that minimizes downtime are reduced during production.
  • the cold rolling machine with a Delivery device provided with integrated feed drive, about the rolling rods during the rolling process are adjustable in the direction of engagement. That is, everyone Rolling rod is assigned to an infeed axis, which is a Adjustment of the rolling rods in approximately radial direction with Reference to the workpiece to be machined allows.
  • This delivery device can thus the tread depth be changed during the rolling process, so that, for example the desired final tread depth not - like required in the prior art - during a Feed movement of the rolling rods, but during several Walzstangenh Claus is formed, where the rolling rods be adjusted in the radial direction. This makes it possible to minimize the length of the rolling rod, so that the dimensions of the cold rolling machine comparatively stay low.
  • the rolling rods can substantially executed with consistent tread depth so that their production is much easier than in the conventional rolling rods with in the rolling direction Growing tread depth is.
  • the initially described Calibration and relaxation zones can be over small Ramps formed at the end portions of the rolling rods be with the extending between the ramps Range of rolling rods is substantially consistent Profile depth is formed.
  • Each of the two rolling rods each have a guide carriage associated, which is displaceable along inclined guides is.
  • These two inclined guides are V-shaped employed to each other, so that by moving the Guide carriage along the associated inclined guide the radial distance between roll bar and workpiece is changeable.
  • the delivery movement is carried out by Moving the rolling rod along the wedge-shaped Angular guides, so that by adjusting the Rolling rods without tool change a variation of Number of teeth, the rolling of even and odd numbers of teeth, a positioned rolling and the quality optimization of the profile by division correction is possible.
  • each guide carriage has its own feed drive, For example, associated with a planetary spindle drive is.
  • suitable Drives such as rack drives, ball screw drives or hydraulic drives used become.
  • the structure of the cold rolling machine according to the invention can be further simplified if the free end sections the displaceable along the inclined guides Guide carriages are connected via a console, on stored the drives for the rolling rod device are.
  • the inventive concept can be particularly advantageous used in cold rolling machines whose rolling rods are driven in the vertical direction, so that the Installation surface of the machine according to the invention minimal is.
  • the height can be achieved by driving the rolling rods minimize horizontally.
  • the workpiece can be passed over the rolling rods transferred forces or over its own Driven by the drive of the Rolling rods is synchronized.
  • the forming area of the workpiece is exposed to ultrasound. This ultrasound makes the flow limit lowered during the forming process, so that the forming forces compared to conventional solutions are reduced.
  • the guide slides supporting the inclined guides are advantageously spaced at two Supporting legs of a machine bed supported, wherein these two support legs to increase the rigidity are connected via cross straps.
  • FIG. 1 shows a section through a Cold rolling machine 1, in which two rolling rods 2, 4 in Vertical direction: (with reference to the footprint) are, while a workpiece, not shown carrying headstock 6 (only indicated in FIG 1) in the horizontal direction, d. H. parallel to the support surface is arranged.
  • the workpiece is in this headstock 6 rotatably mounted, via a not shown NC drive, for example for supply or discharge of the workpiece from the machining area, before or after the rolling process, a displacement in the axial direction (perpendicular to the drawing plane) is possible.
  • the design the headstock with a quill and a rear Centering tip is essentially different not of usual solutions, so that with regard to further Details for the sake of simplicity on the above-mentioned Prospectus of the applicant is referenced.
  • FIG 2 housed in laterally arranged cabinets 7.
  • This extremely compact construction with minimal Aufstell configuration allows the cold rolling machine 1 as to execute so-called hook machine, which practically as functional unit is pre-assembled and delivered.
  • the illustrated cold rolling machine 1 has a mineral cast manufactured substructure, the two upwards (View of Figure 1) projecting support legs 10, 12th Has. These each have a stepped recess with a visible in Figure 1 horizontal support surface 14th and a vertical support surface (Figure 2) 16, at the one the two support legs 10, 12 overarching bridge construction 18 is supported. This is in FIG. 2 shown cut and contains essentially the Guides and drives for the reciprocal movement of the Rolling bars 2, 4.
  • the rolling rods 2, 4 bearing bridge construction 18 each has one attached to the support legs 10, 12 Support body 20, 22, which consists essentially of a Cast support structure 24 is made with a Mineralgußchollung is executed.
  • both support body 20, 22 via a rear cross-tab 26th and a front cross-bar 28 connected together the area between the two support legs 10, 12th overstretch.
  • the end portions of the front crossbar 28 are at the through the horizontal support surface 14 and the Vertical support surface 16 formed bearing surfaces of Support leg 10 and 12 attached.
  • Both transverse straps 26, 28 each have a recess 30, 32, through which the workpiece with the associated clamping devices of the headstock 6 (indicated in Figure 2) in the Machining area can be feasible.
  • FIG. 2 are at the opposite end faces of the two Support body 20, 22 and the cast-support structure 24th cast in oblique track guides 34, 36 in the form of Flat track guides made of plastic, which are due to low friction, high accuracy, long Lifespan as well as an optimal damping characteristic.
  • oblique track guides 34, 36 is in each case a guide carriage 38, 40 guided in the Investment area to the two support body 20, 22 with guide legs is executed, which is the inclined track guide 34, 36 embrace.
  • each flat track guide 34, 36 may, for example 3 °.
  • the axial displacement of the two guide carriages 38, 40 takes place via an NC drive 44, the for example as planetary spindle drive with servomotor 50 may be executed.
  • NC drive 44 the for example as planetary spindle drive with servomotor 50 may be executed.
  • Each is a spindle nut 46 rotatably supported in the support body 22 and 24, while the planetary spindle 48 in a console of Guide carriage 38 and 40 stored and a Timing belt is connected to the servo motor 50.
  • a planetary spindle 48 Depending on Direction of rotation of the servo motor 50 is the planetary spindle 48 through the fixed spindle nut 46 in rotation offset and this as axial displacement on the guide carriage 38,40 transferred so that these along the Slanted track guides 34 and 36 are moved.
  • the guides 52, 54 are also again as cast Flat track guides executed and correspond in terms of construction essentially the inclined guides 34, 36. That is, the carriages 56, 58 dive along their end face in a U-shaped recess of the associated Guide carriage 38, 40, wherein these Recess is designed as a sliding guide. The determination the carriage 56, 58 on the associated Fhakschlgsschlitten 38, 40 takes place via a counter-guide 60.
  • FIG. 1 shows the two support legs 10, 12 also extending end portions of the two guide carriage 38, 40 each have a console 62, in each an NC drives 64, 66 is mounted.
  • a planetary spindle 48th is (here via a toothed belt 68) ( Figure 2) with a Servomotor 50 is connected and rotatable in the console 62nd stored.
  • the cooperating with the planetary spindle 48 Spindle nut 46 is rotationally fixed in each case a carriage 56, 58 mounted so that upon rotation of the planetary spindle 48, the spindle nut 46 and the associated Slide 56 and 58 along the guide 52 and 54, respectively becomes.
  • the planetary spindle 48 passes through it an inner bore of the associated carriage 56, 58.
  • the Both NC drives 64, 66 are driven in such a way that the two rolling rods 2, 4 in the counter-synchronized Movements are offset.
  • FIG. 3 shows a schematic representation of a Rolling rod 2, as in the cold rolling machine according to the invention 1 can be used according to FIG.
  • This roll bar 2 is made in a conventional manner hardened and ground cold work steel produced and carries a profiling 70 whose profile depth S substantially constant along a region T. is. At the two end portions of the profiling 70 Ramps 72 are formed whose length U is essential less than the length T with constant profiling 70 is. Due to the substantially constant Profiling can be shown in Figure 3 Rolling rod much easier than conventional rolling rods produce, where the tread depth in the range T is variable. Also, the regrinding of the in Figure 3 shown rolling rod is due to the substantially consistent tread depth much easier than at the conventional solutions.
  • FIG. 1 shows the basic position of the cold rolling machine 1, in which the carriage 58 in its upper and the Carriage 56 is in its lower end position.
  • This basic position is the two guide carriages 38, 40 via the NC drives 44 in their upper end position driven, so that the distance between the rolling rods 2, 4 is maximum (minimum tread depth).
  • In this basic position is the workpiece over the headstock 6 in its machining position between the two rolling rods 2, 4 brought.
  • the two NC drives 64, 66 controlled synchronously and in opposite directions, so that the two Rolling bars 2, 4 run in opposite directions on the workpiece and this rotated by frictional and positive engagement in rotation, being through the engagement between the workpiece and the Both rolling rods 2, 4 of the forming process takes place.
  • the Profile depth can be adjusted by a synchronous shift the two guide slides 38, 40 along the inclined surfaces 34, 36 are set, with the maximum Tread depth during a stroke of the rolling rods 2, 4 or during several successive strokes (also in the Reversing) is formed.
  • the inclined guide 34, 36 and corresponding stroke of NC drives can be, for example, a tread depth of make up to about 5 mm.
  • the rolling process is constantly monitors, so that the rolling process by variable speed profiles both for the advance of the guide carriage 34, 36 and the carriage 56, 58 can be optimized is.
  • planetary spindle drives can Of course, other suitable drives, such as for example, ball screws, rack drives or hydraulic drives are used.
  • the substructure may differ from the above-described embodiment also in a conventional manner by a welding or cast construction be formed.
  • the adjustability of the guide carriage 38, 40 allows it further, during the rolling process a To perform division correction, so that the rolling quality Compared to conventional solutions with rolling rods considerably is improved.
  • rolling guides for example Roller shoes or flat cage guides used which, however, both in terms of load ratings as well as the cost less favorable than the molded Guideways are.
  • the workpiece by engagement with the rolling rods 2, 4 driven.
  • the synchronized with the NC drives 64, 66 of the rolling rods is, so that the stroke of the rolling rods 2, 4 with the Rotation of the workpiece to be rolled is synchronized.
  • the forming forces can be reduced, if the rolled surface of the workpiece is subjected to ultrasound becomes.
  • Ultraschallbeaufschlagung can a suitable ultrasonic head in the cold rolling machine to get integrated.
  • the rotational movement of the workpiece during the Rolling process with ultrasonic vibrations to overlap. This could for example be done by the above-described rotary drive for the workpiece a rotary motion generated with high-frequency ultrasonic vibrations low amplitude is superimposed.
  • the Schwingungsbeinl the forming process can be reduce the forming forces during the rolling process, so that allows an increase in the process speed is. Due to the reduction of the flow limit can even after conventional methods difficult to form Cold rolled materials.
  • a cold rolling machine in which the Rolling rods preferably arranged in the vertical direction are and about a feed device during the rolling process in the radial direction with respect to the machined Workpiece are adjustable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Transmission Devices (AREA)
  • Lubricants (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (15)

  1. Machine de laminage à froid comprenant deux barres de laminage (2, 4), profilées, entraínées en sens opposé, qui sont montées à chaque fois sur un guidage (52, 54), via un chariot (56, 58), et sont en prise avec une pièce d'usinage montée en rotation entre les barres de laminage (2, 4),
    caractérisée par un dispositif d'avance (38, 40 ; 20, 22) comprenant au moins un entraínement d'avance (44) grâce auquel les barres de laminage (2, 4), pendant le laminage, sont réglables dans le sens radial par rapport à la pièce d'usinage.
  2. Machine de laminage à froid selon la revendication 1, où le dispositif d'avance, pour chaque guidage (52, 54), a un chariot de guidage (38, 40) qui est monté en étant mobile sur un guidage oblique (34, 36), où les guidages obliques (34, 36) associés aux deux barres de laminage (2, 4) sont disposés en forme de V l'un par rapport à l'autre.
  3. Machine de laminage à froid selon la revendication 2 ou 3, où un entraínement d'avance (44), de préférence un entraínement à commande numérique (NC), est associé à chaque chariot de guidage (38, 40).
  4. Machine de laminage à froid selon la revendication 2 ou 3, où les parties d'extrémités libres des chariots de guidage (38, 40) ont une console (62) sur laquelle sont montés les entraínements (64, 66) pour les barres de laminage (2, 4).
  5. Machine de laminage à froid selon l'une quelconque des revendications précédentes, où les guidages (52, 54) pour les barres de laminage (2, 4) sont disposés dans le sens vertical ou dans le sens horizontal.
  6. Machine de laminage à froid selon la revendication 2, où les guidages obliques (34, 36) sont disposés sur deux branches d'appui (10, 12) d'une infrastructure (8).
  7. Machine de laminage à froid selon la revendication 6, où les deux branches d'appui (10, 12) sont reliées entre elles par des éclisses transversales (26, 28).
  8. Machine de laminage à froid selon l'une quelconque des revendications 1 à 7,.où un entraínement est associé à la pièce d'usinage, lequel entraínement est synchronisé avec l'entraínement des barres de laminage.
  9. Machine de laminage à froid selon l'une quelconque des revendications 1 à 8, comprenant un dispositif à ultrasons au moyen duquel la zone laminée de la pièce d'usinage peut être sollicitée par des vibrations dans la plage d'ultrasons.
  10. Machine de laminage à froid selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu une barre de laminage (2 ; 4) ayant un profilage (70) qui s'étend en ayant un profilé constant pratiquement sur toute la surface active de la barre de laminage (2 ; 4).
  11. Machine de laminage à froid selon la revendication 10, où des rampes courtes (72), ayant une profondeur de profilé moins importante, sont conformées au niveau des parties d'extrémités du profilage (70).
  12. Procédé de laminage à froid d'une pièce d'usinage qui est en prise active avec deux barres de laminage (2, 4) pouvant être entraínées en sens opposé, caractérisé en ce que les barres de laminage (2, 4), pendant le laminage, sont réglées dans le sens radial par rapport à la pièce d'usinage.
  13. Procédé selon la revendication 12, où la profondeur de profilé prédéterminée est conformée pendant plusieurs courses successives des barres de laminage.
  14. Utilisation d'une machine de laminage à froid selon l'une quelconque des revendications 1 à 11, avec des barres de laminage comprenant un profilage (70) qui s'étend en ayant un profilé constant pratiquement sur toute la surface d'usinage de la barre de laminage (2 ; 4).
  15. Procédé selon la revendication 14, où des rampes courtes (72), ayant une profondeur de profilé moins importante, sont conformées au niveau des parties d'extrémités du profilage (70) de la barre de laminage.
EP01955205A 2000-06-09 2001-06-08 Machine de laminage a froid Expired - Lifetime EP1286794B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04009469A EP1442808B1 (fr) 2000-06-09 2001-06-08 Matrice de laminage
DE20122205U DE20122205U1 (de) 2000-06-09 2001-06-08 Kaltwalzmaschine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10028165 2000-06-09
DE10028165A DE10028165A1 (de) 2000-06-09 2000-06-09 Kaltwalzmaschine
PCT/DE2001/002119 WO2001094048A1 (fr) 2000-06-09 2001-06-08 Machine de laminage a froid

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP04009469A Division EP1442808B1 (fr) 2000-06-09 2001-06-08 Matrice de laminage
EP04009469.0 Division-Into 2004-04-22

Publications (3)

Publication Number Publication Date
EP1286794A1 EP1286794A1 (fr) 2003-03-05
EP1286794B1 true EP1286794B1 (fr) 2004-09-22
EP1286794B2 EP1286794B2 (fr) 2009-12-30

Family

ID=7644977

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04009469A Expired - Lifetime EP1442808B1 (fr) 2000-06-09 2001-06-08 Matrice de laminage
EP01955205A Expired - Lifetime EP1286794B2 (fr) 2000-06-09 2001-06-08 Machine de laminage a froid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04009469A Expired - Lifetime EP1442808B1 (fr) 2000-06-09 2001-06-08 Matrice de laminage

Country Status (5)

Country Link
US (2) US7051565B2 (fr)
EP (2) EP1442808B1 (fr)
AT (1) ATE276846T1 (fr)
DE (4) DE10028165A1 (fr)
WO (1) WO2001094048A1 (fr)

Cited By (1)

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EP4272887A1 (fr) 2022-05-03 2023-11-08 OSG Ex-Cell-O GmbH Unité d'outil pour une machine de laminage à froid

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4272887A1 (fr) 2022-05-03 2023-11-08 OSG Ex-Cell-O GmbH Unité d'outil pour une machine de laminage à froid
DE102022110872A1 (de) 2022-05-03 2023-11-09 Osg Ex-Cell-O Gmbh Werkzeugeinheit für eine Kaltwalzmaschine

Also Published As

Publication number Publication date
US20040007034A1 (en) 2004-01-15
ATE276846T1 (de) 2004-10-15
EP1286794A1 (fr) 2003-03-05
EP1442808B1 (fr) 2009-02-04
EP1442808A3 (fr) 2004-09-29
DE50103775D1 (de) 2004-10-28
EP1286794B2 (fr) 2009-12-30
US20060162409A1 (en) 2006-07-27
DE50114694D1 (de) 2009-03-19
US7051565B2 (en) 2006-05-30
US7353679B2 (en) 2008-04-08
DE10028165A1 (de) 2001-12-13
WO2001094048A1 (fr) 2001-12-13
EP1442808A2 (fr) 2004-08-04
DE20122205U1 (de) 2004-09-30

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