WO2003084695A1 - Vorrichtung und verfahren zum richten von halbzeug - Google Patents
Vorrichtung und verfahren zum richten von halbzeug Download PDFInfo
- Publication number
- WO2003084695A1 WO2003084695A1 PCT/DE2003/000658 DE0300658W WO03084695A1 WO 2003084695 A1 WO2003084695 A1 WO 2003084695A1 DE 0300658 W DE0300658 W DE 0300658W WO 03084695 A1 WO03084695 A1 WO 03084695A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- straightening
- rotor
- bearing
- straightening rotor
- speed
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/005—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by eccentric turning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
- B21F1/023—Straightening in a device rotating about the wire axis
Definitions
- the invention relates to a device for straightening semifinished products, in particular wound or drawn semifinished products, and a method for straightening semifinished products, in which a straightening rotor having a straightening means rotates around the semifinished product to be straightened.
- Straightening machines for wound semi-finished products, in particular for wire are well known from the prior art.
- a straightening machine for wire in particular for reinforcing steel wire, which is drawn off from a coil, straightened, cut to length and fed as a straight round steel rod for further processing and / or use.
- a plurality of straightening nozzles are provided for straightening, which are offset with respect to the passage axis of the wire.
- the directional nozzles are arranged in a housing which rotates around the pass axis.
- the straightening nozzles are mounted in roller bearings, the axes of which coincide with the axes of the straightening nozzles mounted therein, the roller bearings being set up to absorb the axial forces during the passage of a dressing wire.
- the rotating housing in which the directional nozzles are arranged, is also mounted in roller bearings, with which radial or axial forces are absorbed by the rotating housing.
- a previously curved wire which has a curvature due to internal stresses, is straightened or straightened by means of the devices described above.
- the wire is threaded into a so-called straightening rotor and guided through it.
- the wire is bent back and forth by means of straightening nozzles or by means of straightening bolts due to the rotating straightening rotor.
- the plastic deformations experienced in this way distribute the internal stresses in the wire more evenly, if not entirely.
- T can be viewed as a quality measure for the straightening process, with a too large T leading to spiral structures of the semi-finished product.
- d denotes the wire diameter
- s denotes the wire feed per revolution, which denotes a path of a wire from a point A to a point B in the direction of the longitudinal axis of the wire.
- the straightening rotor makes a complete 360 ° rotation around its own axis. During this rotation, the wire moves forward from point A to point B by the distance "s".
- the transport factor and the speed of rotation are functionally related, so that large rotation speeds are required for small diameters.
- the object of the invention is achieved on the one hand by a device for straightening semi-finished products with a self-centering straightening rotor.
- the rotational speed of the rotor and thus the throughput speed can be increased while the T remains constant.
- the term “semifinished product” in the present case is preferably understood to mean wires wound on a coil, but also any other materials or semifinished products that are wound up, for example, for advantageous transport or storage, but to be straightened for further processing and thus to be largely freed of internal stresses are described in the sense of the invention with the term "semi-finished product"
- the term “self-centering straightening rotor” is preferably understood to mean a rotating component which, by suitable means, is able to rotate about its axis of rotation at such a high speed that the imbalances occurring during the rotation compensate for this is particularly advantageous with regard to continuous operation of a straightening machine, since high centrifugal forces or high unbalance forces can damage the same or one of its component groups, so that the service life of the components concerned is impaired
- self-centering straightening rotor can include straightening rotors that are operated for straightening a wound semi-finished product in a supercritical speed range
- centrifugal forces or unbalance forces result from one or more partial masses that do not lie on the actual axis of rotation of the component but on a different, center of gravity axis deviating therefrom
- critical speed range in the present case describes a speed range which, above a critical speed, at which unbalance, omitting the present invention, can lead to damage to components, in particular bearings, and / or above at least a first lowest natural frequency, preferably above a first natural frequency, the straightening rotor and its bearing Accordingly, the term “subcritical speed range” describes a speed range that lies below the critical speed or below at least a first lowest natural frequency.
- critical speed range encompasses in particular the speed range in which an insufficiently damped or dampable resonance with respect to the straightening rotor can occur.
- a resonance an amplitude or several amplitudes of a frequency increases very strongly, so that it becomes very high Stresses can lead to component failure.
- the straightening rotor is mounted on an at least temporarily resilient bearing mount.
- a resonance can be placed in a manageable area, in particular through the flexible storage.
- the self-centering straightening rotor is preferably operated above this resonance frequency, at least during straightening operation, ideally if centrifugal or unbalance forces occurring due to an uneven mass distribution of the straightening rotor are not or hardly released to the outside.
- a bearing suspension which at least temporarily resiliently supports the straightening rotor, provides a suspension capable of oscillation for a straightening rotor, which in turn only releases significantly less forces to the environment
- the bearing mount is made of conductive metal, such as aluminum or titanium. Since a light metal has a significantly lower density and a good strength compared to a conventional machine steel, this measure reduces the total mass of the vibration-capable suspension for such a use materials that have a density of less than 3.0 kg per dm 3 , in particular a density of less than 1.8 kg per dm 3. This reduces the rotating or vibrating masses
- the bearing support is preferably designed as a roller bearing support, but it can also be designed as a slide bearing Such a bearing can be realized in a variety of ways. It has proven to be particularly advantageous if the straightening rotor is supported by means of at least one elastic pivot bearing, preferably by means of at least two elastic pivot bearings
- elastic rotary bearing here encompasses bearings or all structures suitable for receiving the bearings, which do not fix a rotatably mounted shaft or axis in the sense of a rigid bearing, but rather enable the rotatably mounted shaft or axis to have an additional amplitude radially to the axis of rotation
- the elastic rotary bearing has at least one vibration damper.
- the elastic bearing or the elastic bearing support is preferably arranged by means of eight, in particular via at least one or at least two such vibration dampers on a bearing block
- vibration dampers are preferably designed in the form of rubber buffers, so that a particularly simple and inexpensive embodiment is thereby possible
- the vibration dampers are arranged concentrically around a bearing eye of the bearing holder
- the elastic rotary bearing has a rigidity c whose radial component c rad is less than its axial component c a ⁇ a ⁇
- the components of the stiffness c have a ratio c ra dc aX ⁇ ai ⁇ 1/5, preferably a ratio c ra d / c ax , ai ⁇ V9. In this way, axial straightening, in particular also during the straightening process Approaching by slipping or sliding effects, conditioned forces are countered effectively.
- the bearing does not become too stiff axially, so that axially effective components of the rotation axis displacement can be sufficiently compensated or natural vibrations of the rotor itself can be decoupled, in particular in the interval mentioned here operation of the self-centering straightening rotor in a supercritical speed range is advantageously possible.
- the straightening rotor has straightening means which can be adjusted by means of an adjusting device when the straightening rotor rotates.
- the term “straightening means” encompasses any components which are suitable for straightening a semi-finished product described above in the sense of the invention.
- so-called straightening nozzles, straightening stones or straightening rollers are used for this purpose.
- the adjusting device has at least one sliding bearing, in particular an axial sliding bearing.
- a hydrodynamic bearing preferably a hydrodynamic axial bearing, can be provided.
- the bearing preferably has two pairs of sliding surfaces made of two smooth circular ring surfaces.
- the plain bearings are primarily not used to guide the self-centering straightening rotor. Rather, the slide bearing is used, for example, to control a toothed rack, which in turn interacts with at least one directional nozzle, in particular the middle directional nozzle, in such a way that the delivery of this directional nozzle with respect to the semi-finished product is varied.
- the plain bearing preferably has at least one standing area and at least two rotating areas, in particular in interaction with hydrodynamic or hydrostatic plain bearings.
- a rotating area and at least two standing areas can also be provided.
- the areas can be realized in the form of rings.
- the standing ring is moved in the direction of the straightening rotor axis of rotation by an adjusting drive of the adjusting device.
- the standing ring does not rotate together with the straightening rotor, but is held axially displaceable in at least two guides of the adjusting device in the direction of the straightening rotor axis of rotation.
- a radial play of 1 mm, 2 mm and above.
- Such a game leaves the circumferential speeds in a tolerable range and enables the axes to be shifted according to the invention in a structurally controllable manner.
- the guides are arranged, for example, approximately parallel along the direction of rotation of the straightening rotor.
- the two rotating rings rotate with the straightening rotor, so that a hydrodynamic bearing is created with the standing ring and the rotating rings in the presence of a corresponding fluid.
- an axial plain bearing allows storage at very high circumferential speeds, on the one hand, and radial freedom for the eccentric rotation of the straightening rotor, on the other hand, since the pair of sliding surfaces of the axial bearing basically consists of two smooth annular surfaces. It goes without saying that such an axial sliding bearing, in particular if it is designed hydrodynamically, is also advantageous independently of the other features of the present invention.
- the self-centering straightening rotor has an elastic coupling on at least one shaft end, which connects the straightening rotor to a drive device.
- the elastic coupling establishes a flexible connection between the self-centering straightening rotor and a drive shaft of the drive device, so that vibrations emanating from the self-centering straightening rotor are not transmitted to the drive train, or at least only to a very great extent.
- This makes it possible to drive the oscillatory suspension by means of a relatively rigidly arranged drive device. This is structurally easy to implement.
- Such a coupling also decouples the drive from the straightening rotor advantageously with regard to vibrations, so that it is also advantageous regardless of the other features of the present invention.
- the object of the invention is also achieved by a method for straightening the wound semifinished product, in which a straightening rotor having a straightening means rotates around the semifinished product to be straightened, a center of gravity of the rotating straightening rotor approaching its axis of rotation with an increasing straightening rotor speed.
- an eccentricity of a center of gravity axis of the straightening rotor which can also be calculated, for example, by a suitable averaging, is reduced with respect to the axis of rotation of the straightening rotor with increasing straightening rotor speed, so that the center of gravity axis ideally coincides with the axis of rotation of the straightening rotor.
- the centrifugal forces caused by eccentrically arranged partial masses are minimized in such a way that a bearing of the straightening rotor only has to absorb significantly reduced bearing forces. This applies in particular to operation in the supercritical speed range, with the eccentricity even increasing in the subcritical or critical speed range.
- the rotating straightening rotor causes considerably lower centrifugal or unbalance forces than is the case with straightening rotors, whose center of gravity axis does not or almost hardly approaches the axis of rotation of the straightening rotor as the straightening rotor speed increases.
- the bearing of the rotor is essentially only loaded by the weight of the rotor and the acceleration forces on the components surrounding the bearing.
- the straightening rotor rotates at a speed which is in a supercritical speed range.
- the straightening rotor possibly rotates, in particular also outside of a resonance, so that the amplitudes of the frequencies do not add up in such a way that the straightening machine fails.
- the straightening rotor rotates at a speed which is 10%, preferably 20%, above at least a first lowest natural frequency of the straightening rotor and its mounting.
- the straightening rotor rotates at least above its lowest natural frequency in continuous operation, it is advantageous if the straightening rotor rotates during the straightening of semifinished products with one revolution above 5,000 revolutions per minute, preferably above 9,000 revolutions per minute. This ensures that the straightening rotor is exposed to the lowest possible imbalance forces in continuous operation and also rotates with the lowest possible vibrations. This results in significantly lower bearing forces.
- Dralit feed rate is possible that is well above the performance data of conventional straightening machines.
- the speed of the straightening rotor comes shortly before the critical speed range or into the critical speed range, it is advantageous if at least one elastic bearing means is changed in its properties while the straightening rotor is rotating.
- the previously defined elastic bearing means can be released in such a way that the straightening rotor is mounted in the manner of a vibration-capable arrangement.
- at least one straightening means is adjusted or is adjustable while the straightening rotor is rotating.
- the straightening means of the straightening rotor have straightening nozzles, it is advantageous if these straightening nozzles can be adjusted while the straightening rotor is rotating.
- the rotor can be left in a special starting setting, in particular with the least possible unbalance, and the actual straightening position, which may be considerably less balanced, can only be assumed later.
- At least one straightening means is adjusted by means of a, preferably hydrodynamic, axial bearing.
- a, preferably hydrodynamic, axial bearing At least, for example, two circular ring surfaces of the hydrodynamic axial bearing are moved radially relative to one another with respect to the axis of rotation of the straightening rotor.
- the above-described device and the above-described method make it possible to work much more economically, since more semi-finished products can be straightened in a shorter time.
- Figure 1 is a partially sectioned side view of a straightening machine with elastic
- FIG. 2 shows a partially cut top view of a further straightening machine with elastic bearings and hydrodynamic axial bearings for adjusting straightening nozzles
- FIG. 3 schematically shows a side view of a standing ring of the hydrodynamic axial bearing
- FIG. 4 shows a schematic view of a bearing mounting with rubber buffers
- Figure 5 schematically shows a partially cut directional nozzle holder
- Figure 6 schematically shows a resonance diagram.
- the straightening machine 1 from FIG. 1 comprises a housing 2, a motor 3, a drive unit 4 and a vibration-capable suspension 5 with a straightening rotor 6.
- the straightening machine for example, straightens a previously wound wire 7, the wire 7 passing through the straightening machine 1 from an input area 8 to an output area 9.
- the wire 7 is passed through straightening nozzles 10 (here numbered only as examples).
- the straightening nozzles 10 are arranged in the straightening rotor 6 such that the wire 7 is bent back and forth along an axis of rotation 11 of the straightening rotor 6.
- the oscillatory suspension 5 Since the straightening nozzles 10 are each arranged eccentrically with respect to the axis of rotation 11 of the straightening rotor 6, the oscillatory suspension 5 has an overall center of mass axis 12 which is different from the axis of rotation 11. This produces 6 Füelik forces, in particular when the straightening rotor rotates, which increase to the square with increasing speed of the straightening rotor 6.
- the straightening rotor 6 is mounted with its two shaft journals 13 and 14 in a bearing holder 17 and 18 by means of a roller bearing 15 and 16.
- the bearing receptacles 17 and 18 in turn are elastically mounted on the housing 2 of the straightening machine 1 by means of spring elements 19 and 20.
- the elastic mounting 19, 20 of the straightening machine 1 enables the oscillatory suspension 5 to oscillate in such a way that the rotor 6 is centered automatically at a high speed around the center of gravity
- a flexible coupling 22 is arranged between the shaft journal 13 of the straightening rotor 6 and the pulley 21 of the drive unit 4.
- the flexible coupling 22 prevents excessive vibrations of the vibration-capable Transfer suspension 5 to the pulley 21 and, for example, via a V-belt 22 to the pulley 23 of the motor 3
- the straightening machine 24 shown in FIG. 2 comprises a straightening rotor 25, which essentially corresponds to the straightening rotor 6, an adjusting device 26 and a drive unit 27
- a wire 28 is guided through the straightening rotor 25, and in this case it is tumbled and straightened with low tension
- the straightening rotor 25 is mounted on its two shaft journal ends 29 and 30 on a roller bearing receptacle 31 and 32.
- the rolling bearing receptacles 31 and 32 are made of aluminum in a lightweight construction and have a large number of material recesses in the form of through holes for further weight reduction (not shown here)
- roller bearing supports 31 and 32 in the present exemplary embodiment are each supported by rubber buffers 33 and 34 and 35 and 36 by means of a bearing block 37 and 38 on a housing 39 of the straightening machine 24
- This straightening rotor 25 also has straightening nozzles through which the wire 28 is transported.
- a corresponding straightening nozzle holder comprises a gear nut 41 with which it can be controlled via a rack 42 or 43 corresponding to it which are held by an abutment 40
- the racks 42 and 43 each communicate with hydrodynamic axial bearings 44 and 45.
- the hydrodynamic axial bearings 44 and 45 are each part of a corresponding slide 46 and 47.
- the hydrodynamic axial bearings 44 and 45 each have a standing ring 48, 49 and two rotating rings 50 to 53 communicating with this standing ring 48, 49.
- the rotating rings 50 to 53 rotate together with the straightening rotor 25.
- the slides 46 and 47 are guided axially, that is in the longitudinal direction 61 of the straightening rotor, by a guide 54 and via the fixed rings 48 and 49 by means of a guide 55.
- the guides 54 and 55 are fixed to the housing 39 of the straightening machine 24 by means of clamping devices 56 and 57 (numbered here only as examples).
- the slides 46 and 47 are moved by means of a threaded rod 58.
- the threaded rod 58 is driven by an adjusting drive 59.
- a flexible coupling 60 is arranged between the shaft journal end 30 and the drive device 27, which also easily compensates for larger radial positional displacements of the straightening rotor 25 with respect to the drive unit 27.
- the flexible coupling 60 predominantly transmits only pure torque.
- the straightening rotor 25 can rotate, for example, at speeds of more than 10,000 rpm and more, as a result of which the feed speed of the wire 28 increases significantly.
- the body of the slide 63 has Area 67 a groove 68 in which a guide 69 is arranged.
- the guide 69 is in this case a metal rod which projects into the paper plane or projects vertically from it.
- the body comprises a circular groove 70 which serves as an oil reservoir for a hydrodynamic axial bearing 44, 45 (see FIG. 2).
- the circular groove 70 surrounds a bore 70A, in which the straightening rotor 6 or 25 (see FIGS. 1 and 2) and the rotating rings 50 to 53 are arranged.
- the slide 63 has a further guide 71, so that the slide 63 is guided along at least two guides 69 and 71. So that the slider 63 can be displaced along its two guides 69 and 71, the body comprises a threaded bore 72 which corresponds to a threaded rod 73.
- the bearing holder 74 shown in FIG. 4, which can be used for the bearing holders 31 and 32, comprises a slide bearing 75.
- a large number of vibration dampers 78 are arranged on the bearing holder 74 and are connected to a bearing block 37 and 38 (see FIG. 2). to be able to communicate.
- the vibration dampers 78 are fixed to the bearing holder 74 by means of a screw (not shown here) which is inserted through a bore 79.
- the straightening nozzle holder 80 (FIG. 5) of the exemplary embodiment according to FIG. 2 comprises a straightening nozzle 82 designed to receive a wire to be conveyed and an outer ring 83.
- a roller bearing 84 is arranged between the straightening nozzle 82 and the outer ring 83, so that the straightening nozzle 82 can roll freely on the semi-finished product.
- the outer ring 83 has two shaft journals 88 and 89, with which the directional nozzle holder 80 is axially displaceably mounted.
- the shaft journal 89 not only serves to support the directional nozzle holder 80, but also a thread and a gear nut 90 are arranged on it.
- This gear nut 90 communicates with at least one of the toothed racks 42, 43 (see FIG. 2) and can be rotated in the arrow direction 87 about an axis of rotation 86 which is arranged orthogonally to the wire conveying direction 81.
- the resonance diagram 91 from FIG. 6 shows a profile of an amplitude A of an eccentricity e of a center of mass axis 12 (see FIG. 1) compared to a straightening rotor axis of rotation as a function of an angular velocity ⁇ of the straightening rotor.
- the eccentricity increases from an initial eccentricity 93 with increasing angular velocity ⁇ .
- the angular velocity ⁇ first runs through a subcritical speed range 94 and then through a critical speed range 95, which then changes into a supercritical speed range 96.
- the amplitude A 98 is so low that safe continuous operation is guaranteed from this angular velocity ⁇ .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10391154T DE10391154D2 (de) | 2002-04-04 | 2003-02-27 | Vorrichtung und Verfahren zum Richten von Halbzeug |
EP03724820A EP1490189A1 (de) | 2002-04-04 | 2003-02-27 | Vorrichtung und verfahren zum richten von halbzeug |
AU2003229259A AU2003229259A1 (en) | 2002-04-04 | 2003-02-27 | Device and method for straightening semi-finished products |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10214970.4 | 2002-04-04 | ||
DE10214970 | 2002-04-04 | ||
DE10303113.8 | 2003-01-27 | ||
DE10303113 | 2003-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003084695A1 true WO2003084695A1 (de) | 2003-10-16 |
Family
ID=28792817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/000658 WO2003084695A1 (de) | 2002-04-04 | 2003-02-27 | Vorrichtung und verfahren zum richten von halbzeug |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1490189A1 (de) |
AU (1) | AU2003229259A1 (de) |
DE (1) | DE10391154D2 (de) |
WO (1) | WO2003084695A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1952906A2 (de) | 2007-02-02 | 2008-08-06 | Schumag AG | Richtrotor, Rotorrichter sowie Richtverfahren |
DE102007026728A1 (de) | 2007-02-02 | 2008-08-07 | Schumag Ag | Richtrotor, Rotorrichter sowie Richtverfahren |
CN103264124A (zh) * | 2013-06-14 | 2013-08-28 | 沈阳兴鑫科技有限公司 | 钢丝矫直机 |
DE102020216047B3 (de) | 2020-12-16 | 2022-05-12 | Wafios Aktiengesellschaft | Verfahren und Umformmaschine zur Herstellung von Formteilen aus Rundmaterial |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1847454A (en) * | 1928-06-28 | 1932-03-01 | Ac Spark Plug Co | Wire straightener |
DE3910221A1 (de) * | 1989-03-30 | 1990-10-04 | Peddinghaus Carl Ullrich Dr | Richtmaschine fuer draht, insbesondere fuer betonstahldraht |
EP0620058A1 (de) * | 1993-04-08 | 1994-10-19 | PEDDINGHAUS, Rolf | Richtmaschine für Draht |
-
2003
- 2003-02-27 WO PCT/DE2003/000658 patent/WO2003084695A1/de not_active Application Discontinuation
- 2003-02-27 EP EP03724820A patent/EP1490189A1/de not_active Withdrawn
- 2003-02-27 AU AU2003229259A patent/AU2003229259A1/en not_active Abandoned
- 2003-02-27 DE DE10391154T patent/DE10391154D2/de not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1847454A (en) * | 1928-06-28 | 1932-03-01 | Ac Spark Plug Co | Wire straightener |
DE3910221A1 (de) * | 1989-03-30 | 1990-10-04 | Peddinghaus Carl Ullrich Dr | Richtmaschine fuer draht, insbesondere fuer betonstahldraht |
EP0620058A1 (de) * | 1993-04-08 | 1994-10-19 | PEDDINGHAUS, Rolf | Richtmaschine für Draht |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1952906A2 (de) | 2007-02-02 | 2008-08-06 | Schumag AG | Richtrotor, Rotorrichter sowie Richtverfahren |
DE102007026728A1 (de) | 2007-02-02 | 2008-08-07 | Schumag Ag | Richtrotor, Rotorrichter sowie Richtverfahren |
EP1952906A3 (de) * | 2007-02-02 | 2008-09-03 | Schumag AG | Richtrotor, Rotorrichter sowie Richtverfahren |
CN103264124A (zh) * | 2013-06-14 | 2013-08-28 | 沈阳兴鑫科技有限公司 | 钢丝矫直机 |
DE102020216047B3 (de) | 2020-12-16 | 2022-05-12 | Wafios Aktiengesellschaft | Verfahren und Umformmaschine zur Herstellung von Formteilen aus Rundmaterial |
Also Published As
Publication number | Publication date |
---|---|
EP1490189A1 (de) | 2004-12-29 |
AU2003229259A1 (en) | 2003-10-20 |
DE10391154D2 (de) | 2005-02-24 |
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