WO2000069582A1 - Procede de fabrication d'un produit de depart metallique en forme de bande, en particulier d'un produit de depart profile a intervalles reguliers, et utilisation d'un dispositif permettant de mettre en oeuvre ledit procede - Google Patents

Procede de fabrication d'un produit de depart metallique en forme de bande, en particulier d'un produit de depart profile a intervalles reguliers, et utilisation d'un dispositif permettant de mettre en oeuvre ledit procede Download PDF

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Publication number
WO2000069582A1
WO2000069582A1 PCT/EP2000/004269 EP0004269W WO0069582A1 WO 2000069582 A1 WO2000069582 A1 WO 2000069582A1 EP 0004269 W EP0004269 W EP 0004269W WO 0069582 A1 WO0069582 A1 WO 0069582A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal strip
rolling
roller
rollers
roll
Prior art date
Application number
PCT/EP2000/004269
Other languages
German (de)
English (en)
Inventor
Hans-Jörg BAUDER
Original Assignee
Hjb Rolling Mill Technology 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
Priority claimed from DE1999121720 external-priority patent/DE19921720C1/de
Priority claimed from DE19938966A external-priority patent/DE19938966C1/de
Priority claimed from DE10019175A external-priority patent/DE10019175A1/de
Application filed by Hjb Rolling Mill Technology Gmbh filed Critical Hjb Rolling Mill Technology Gmbh
Priority to DE50000686T priority Critical patent/DE50000686D1/de
Priority to EP00936734A priority patent/EP1183117B1/fr
Priority to AT00936734T priority patent/ATE226491T1/de
Priority to US10/030,328 priority patent/US7334446B1/en
Priority to AU52125/00A priority patent/AU5212500A/en
Publication of WO2000069582A1 publication Critical patent/WO2000069582A1/fr

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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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • 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
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills

Definitions

  • the invention is based on a method with the features specified in the preamble of claim 1.
  • a method is known from DE 195 04 711 C2. It works in such a way that a metal strip is rolled repeatedly, for which it continuously runs through a roll stand from start to finish, the working direction of which is then reversed, so that the metal strip then runs through the roll stand again over its full length, but now in reverse Direction.
  • DE-PS 104 875 From DE-PS 104 875 it is known to roll a profile in a single step for the production of tubes in strip or plate-shaped workpieces.
  • DE 197 04 300 A1 discloses a similar method for producing profiled blanks, in particular body panels.
  • DE-PS 638 195 a step method for producing thin strips from a thick starting workpiece is known. In this process, the starting workpiece is gradually deformed with a high degree of deformation and pushed against the usual rolling direction through the roll gap.
  • the surface quality of the two rolls decreases because the rolling process results in metal abrasion, which contaminates the roll surfaces. Only during the first rotation of the rollers is their surface mirror-bright. Then the surface quality deteriorates from rotation to rotation and with it the surface quality of the rolled primary material deteriorates. After passing through a strip length of approx. 100 to 1,000 coin diameters, the rollers are usually removed and brought back to a mirror finish by lapping. Despite this complex procedure, no proofs with a constant, high surface quality are obtained.
  • the present invention has for its object to show a way how a band-shaped material with a consistently high surface quality can be produced economically.
  • the metal strip is rolled in successive sections, which are shorter than the circumference of the two rolls, in each case between the same two rolls in two or more than two rolling steps, for which purpose the metal strip is retrieved between two successive rolling steps and then the section of the metal strip which has been retrieved is rolled again becomes.
  • the retrieval of the metal strip makes it possible for the last rolling step to take place in each of the recovered sections of the metal strip between those peripheral sections of the two rolls which have not yet acted on the relevant section of the metal strip in the one or more preceding rolling steps. so that the last rolling step takes place between peripheral sections of the two rolls which have the best surface quality still available, whereas the preceding rolling steps can take place between peripheral sections of the two rolls which have already carried out a larger number of rolling steps and are of poorer surface quality.
  • the surface quality of the strip-shaped primary material finally produced is determined by the surface quality of those peripheral sections of the two rolls which carry out the last rolling step in the section of the metal strip under consideration.
  • the circumference of the rolls should be at least twice as long as the length of the sections that are retrieved, the section being retrieved being somewhat larger than the diameter of the sections to be punched out Proofs so that the unavoidable punching waste can be taken into account. If the metal strip is rolled not only in one direction, but sometimes in one direction and sometimes in the other direction, then one can e.g.
  • the metal strip is rolled back and forth a few times between the same sections of the two rolls and the last rolling step is carried out between two peripheral sections of the rolls which were previously used for a smaller number of rolling steps and therefore an even better surface quality have so that in the last rolling step they give the metal strip a surface with an equally good quality.
  • the roller diameter is preferably selected so that at least ten, preferably at least fifteen, proofs can be punched out from a part of the primary material, the length of which corresponds to the circumference of the rollers.
  • the stepwise repeated rolling of the relevant section of the metal strip is preferably carried out in such a way that of the surface sections of the two rolls which act on the relevant section of the metal strip, the surface sections of the two rolls acting on the relevant section of the metal strip in the first rolling step have the greatest number and the sections of the rolls acting on the relevant section of the metal strip in the last rolling step have carried out the smallest number of rolling steps, the surface quality naturally being best when the section of the rolls acting in the last rolling step executes a rolling step for the first time, that is to say still shows ideal mirror high gloss.
  • the method according to the invention also works more economically than the known method for producing proofs.
  • the number of rolling steps used to act on one and the same section of the metal strip is matched to the desired stitch reduction and surface quality of the primary material to be produced.
  • a roll stand with a first reel arranged on the inlet side of the roll nip is suitable for the metal strip to be rolled and with a second reel arranged on the outlet side of the roll nip for winding up the strip-shaped primary material, for those on the inlet side of the roll nip provided reel a drive motor is provided which enables the metal strip to be retrieved in steps of a predeterminable length, in particular a servo motor.
  • the length of the steps by which the metal strip is retrieved can be adapted to the requirements by means of an electronic drive control, in particular program-controlled. With such a program control, the discontinuous drive of the rolls with forward turning, standstill and possibly with backward turning can be optimally adapted to the individual rolling task.
  • a great advantage of the invention is that it can be applied to other applications.
  • One application relates to the production of metal strips which have grooves which do not extend in the longitudinal direction from the beginning of the strip to the end of the strip, but instead extend from one longitudinal edge to the other longitudinal edge across the entire width and in the metal strip at intervals to return.
  • Such grooved metal strips can be used, for example, to produce contact springs or spiral-wound blades for electric motors, in particular for servo motors, by dividing the metal strips.
  • Advanced servomotors are getting faster and more accurate. This places increasing demands on the dimensional accuracy of the spiral helix blades in these motors.
  • the dimensional accuracy of the width of the groove should be better than 0.02 mm.
  • the method is complex and does not lead to the desired accuracy, because the metal strip undergoes a warp with each roll pass, which leads to the fact that the groove becomes somewhat wider from roll pass to roll pass with increasing fluctuations.
  • the working methods described in DE-PS 104 875 and DE 197 04 300 A1 also do not allow high dimensional accuracy.
  • step-by-step and section-wise rolling according to the invention, however, it is possible to roll generally profiled metal strips, in which the profile extends over the entire width of the metal strip, both with high dimensional accuracy and with a high surface quality, especially when the metal strip is not in the multi-step rolling method according to the invention only rolled in one direction and retrieved in the opposite direction, but rolled in both directions, i.e. also when retrieving.
  • the invention is particularly suitable for discontinuously rolling a regularly recurring profile into a metal strip; From such a metal strip, the same mass parts, such as, for example, spiral helix lamellae or contact springs for electrical purposes, can be obtained with high accuracy by dividing the strip.
  • the tape is advantageously divided by Punching.
  • the method according to the invention can also advantageously be applied to coated strips; their coating is not removed by rolling, in contrast to the production of grooved strips by milling.
  • the accuracy and surface quality that can be achieved according to the invention are greater than when milling, greater than when the metal strip is repeatedly rolled over its full length, as in the prior art, to produce a longitudinal groove, which is due to the uneven elongation that occurs is only possible up to a maximum thickness reduction of 10%.
  • the discontinuous mode of operation of the method according to the invention makes a significant contribution to the dimensional accuracy of the profile of profiled metal strips. Because of the discontinuous mode of operation, each rolling step starts from the standstill of the metal strip and the rollers of the rolling stand. For this reason, in the initial phase of each rolling step, the elongation of the metal strip resulting from the engagement of the rollers in the metal strip does not occur abruptly, but in such a way that it is so gentle that a constant tensile stress in the metal strip, which is important for the dimensional accuracy of the profile can be maintained, e.g. by regulating the drive of reels, which are provided for maintaining the tension. For this purpose, the rollers and the metal strip are accelerated and braked to the same extent and synchronously during rolling.
  • one roller can have a cylindrical jacket and the other roller can have a profiled jacket.
  • both rollers are profiled.
  • the shorter the rolling steps the better the dimensional accuracy and surface quality.
  • the rolling steps are advantageously chosen to be shorter than half the circumference of the rolls.
  • the profile extends only over part of the circumference of the roller.
  • the remaining part of the outer surface of the roller can be cylindrical; this makes it possible, with the cylindrical section of the roll surface, not to profile the respective section of the metal strip in a first rolling step, but to equalize it, thereby increasing the dimensional accuracy of the rolled strip.
  • One application for which the invention has been advantageously implemented in order to produce a strip-shaped primary material made of metal, which is profiled in regularly recurring sections, relates to nibs for fountain pens.
  • Nibs for fountain pens have a different thickness over their length. Nibs are typically 0.2 mm thick in the rear area. The nib becomes thicker towards the tip in order to finally reach a maximum of about 0.6 mm at the nib. It is known to produce nibs in that a metal strip is first provided with a corresponding longitudinal profile by rolling in sections, namely in steps whose length corresponds to the length of the later nibs, which extends over the entire width of the metal strip. This profiled metal band is a raw material from which the nibs are later punched out and shaped into the desired curved shape.
  • the upper roller in the circumferential direction with an empirically determined contour of two rollers that delimit a nip and are supported in a roll stand, which contour is complementary to the intended course of the thickness of the nibs.
  • the lateral surface of the upper roller is so close to its axis that there is no engagement with the metal strip in the roll gap in this area.
  • the metal strip is unwound from a first reel and the profiled metal strip emerging from the roll gap is rolled up from a second reel. Since the feed of the metal strip is effected by the two rollers, there is inevitably a certain loose length of the metal strip between them and the second winding reel, which makes it necessary to provide a strip loop with a strip tensioning device which compensates for the discontinuous strip feed the rollers and the continuous winding movement of the second reel. This is associated with some equipment, which is disadvantageous.
  • the upper roller punctures the metal strip to be rolled about 3 mm in front of the plane which passes through the longitudinal axes of the two rollers, it is also known to pretend the metal strip each time before inserting the upper roller using pliers synchronized with the roller rotation the plunging of the upper roller by 1 to 2 mm to keep the waste as small as possible when punching out the nibs later.
  • Nibs produced in the known manner have undesirable fluctuations in thickness.
  • this is due to the fact that the metal strip from which the starting material is made is already subject to fluctuations in thickness, which are increasingly reflected in the starting material profiled by rolling, in particular in the case of large stitch decreases, with the additional factor that large stitch decreases in the case of hard ones Metal straps are difficult to reach.
  • the thickness fluctuations that are already in the starting material are typically + 0.02 mm.
  • the present invention shows a way in which a profiled strip-shaped primary material e.g. for nibs with greater accuracy, namely with fewer deviations of the actual course of the thickness from the target course of the thickness can be produced.
  • the metal strip is rolled in two or more than two rolling steps until the depth of the desired profile of the primary material is reached, so that the overall deformation is achieved not only by a single, but by two or more passes.
  • the metal strip is not allowed to pass through several rolling stands arranged one behind the other; that would be far too expensive and would not or only with difficulty allow the accuracy of the longitudinal positioning of the metal strip in the roll gap, which is required to carry out several roll cuts in one and the same section of the metal strip. Rather, the metal strip is retrieved between two successive rolling steps and then the retrieved section of the metal strip is rolled again between the same two rollers.
  • both rolls which limit the roll gap, can be provided with a corresponding contour that is not cylindrical in sections and / or one of the rolls be shifted to change the height of the roll gap during rolling.
  • the versatility of the invention contributes to the fact that the metal strip does not have to be profiled in every rolling step, but can only be reduced in thickness in a first rolling step, which is why the two rolls also have a cylindrical section, if not anyway are cylindrical. If the metal strip is only profiled from one side, the other roller always has a completely cylindrical surface. ⁇ The progress that the invention brings is achieved with minimal equipment. Proceeding from a rolling stand known per se, essentially only the mode of operation that leads to the profiling has to be modified.
  • one of the two rollers is profiled in the circumferential direction, as is known per se in the manufacture of nibs, then it is designed for purposes of the invention so that it has successively circumferentially sections with different contours, which are separated from one another in particular by cutouts and in connection allow repeated rolling of one and the same section of the metal strip with the intended retrieval of the metal strip.
  • the opposite roller can also be profiled, so that it likewise has sections with different contours in succession in the circumferential direction.
  • both rolls it is also possible to design both rolls to be cylindrical and to achieve the change in the height of the roll gap required for profiling during rolling by moving one of the two rolls, preferably the upper one, in the roll stand.
  • This can be done, for example, with an electric motor that drives two spindles, which act on the roller to be displaced and are coupled with an incremental rotary encoder that enables repeatable adjustment, with the aid of which the electric motor is controlled.
  • the piston rods of the two hydraulic cylinders are connected to incremental position transducers, which in turn are part of a control loop that regulates the position of the piston rods to a specified value or to a specified curve profile - depending on the profile to be rolled.
  • a hydraulic servo drive has the advantage of being faster and more precise. With such a servo drive for moving one roller (the other roller serves as an abutment), it is possible to roll a profile into the metal strip in one or more steps even with cylindrical rollers. It depends on the desired profiling how the roller is to be moved depending on the belt feed.
  • a corresponding control curve, derived from the profile to be rolled, for the drive which is intended to displace the roller can be stored as a control curve in a programmable electronic control unit.
  • a corresponding number of different profiling tasks can be accomplished in metal strips with a roll stand without replacing rolls. If only one roller is moved during rolling, this is preferably the upper roller.
  • the upper or the lower roller can be shifted during the rolling in order to be able to roll a profile into the metal strip both from above and from below. Then the other roller serves as an abutment and maintains its position. It is also possible to apply the displacement of a roller during rolling to a roll stand that has a profiled roller.
  • Such a combination of two different options for changing the height of the roll gap during the course of rolling, namely by using a profiled roll in combination with the displacement of a roll, can further increase the versatility of the roll stand for the production of sectionally profiled strips.
  • two cylindrical rollers are used, it is advantageous to provide one of the rollers, in particular the upper roller, with an axially parallel cut in order to obtain a reference for the rotational angle position of the roller.
  • the retrieval device for example the first reel, from which the metal strip to be profiled is unwound, is of particular importance for the retrieval of the metal strip because it must be able to reproduce the length of the step by which the metal strip is retrieved with sufficient accuracy.
  • this first reel is preferably provided with a servo motor which has an incremental rotary encoder which has an accurate
  • the width of the metal strip can be dimensioned such that a single profiled part, e.g. a single profiled nib can be punched out.
  • a single profiled part e.g. a single profiled nib can be punched out.
  • the economy of the method and a rolling stand operating according to the method can easily be multiplied if wider strips are processed which are so wide that two or more than two adjacent nibs or similar profiled objects are formed from each profiled section of the primary material can.
  • a particularly advantageous development of the invention is the subject of claim 21.
  • the metal strip is leveled before the profile is rolled.
  • Leveling is understood to mean rolling the metal strip in a roll stand with a highly constant roll gap, as a result of which the thickness fluctuations of the metal strip are reduced.
  • Roll stands for leveling are known from DE 25 41 402 C2, to which reference is made for further details.
  • a A highly constant roll gap is achieved by exerting prestressing forces on the roll pins, which are extended outward beyond the roll pin bearings and perpendicular to the roll axes, which can be oriented perpendicularly and preferably in a direction that deviates from the roll axis plane and passes through the incoming metal strip Line of action. In this way, the work cycle of the rolls in the roll neck bearings is reduced.
  • the roll stand provided for profiling the metal strip to be preceded by a further roll stand serving for leveling.
  • the leveling and profiling are carried out in one and the same roll stand, for which purpose the metal strip is not only moved in the feed direction through the roll gap in the working steps serving for profiling.
  • the metal strip is first leveled in steps that are at least as long as the step in profiling, with a moderate decrease in its thickness.
  • the strip is then retrieved by one step of at least the length required for profiling and at most the length advanced during leveling, and then the profile is rolled into the section of the metal strip that has been retrieved.
  • the first roll is cylindrical and the second roll is profiled and has a peripheral section with the contour which is matched to the desired course of the thickness, for example a pen, which is to be produced from the metal strip
  • additionally roll a cylindrical peripheral portion which is separated from the peripheral portion having the contour (claim 26).
  • the leveling step is carried out with the cylindrical peripheral section.
  • the cylindrical peripheral section is chosen so long with regard to its determination and taking into account the elongation of the metal strip that occurs during rolling that the equalized section of the metal strip has at least the length of the nib, preferably a little longer, so that the beginning and / or the end of the profiling step can keep a distance from the beginning and end of the equalized section.
  • the roll stand which serves for profiling is thus simultaneously designed as a roll stand for leveling and is equipped with a step-by-step forward and backward band feed.
  • the work roll used for profiling is to be modified in this, in that it is provided with a suitable cylindrical section, and the roll journals of the two rolls are to be preloaded in order to reduce the bearing play, for example to one of those in the DE-25 41 402 C2 disclosed ways.
  • the roll journals of the two rolls are not preloaded directly, but indirectly by prestressing the roll journals
  • Back-up rolls that preload the two rolls also known as work rolls. However, it is also possible to pretension the two (work) rolls immediately. You also need funds that are not just one step by step, but also allow a gradual return of the metal strip in steps that are approximately as long as the steps in leveling. As already mentioned, this can be done simply by providing at least the first reel, from which the metal strip to be profiled is unwound, with an electric motor, which steers with sufficient accuracy in steps of the desired length and reverses in the direction of rotation leaves. This is preferably done with a servo motor, which has an incremental rotary encoder, which enables precise definition of the desired step length during unwinding and winding up. A servo motor is usually with a subordinate one
  • the second reel which winds up the profiled metal strip, is preferably also provided with such a servo motor.
  • Processing the metal strip results in improved uniformity of the rolled starting material and prevents the occurrence of a strip run, ie the metal strip does not warp.
  • ⁇ Another advantage of driving the reels with servomotors is that the belt feed and the drive of the two rollers can be coordinated so well that, unlike in the prior art, a discontinuous roller drive can take place instead of a continuous drive of the rollers.
  • the speed at which the profiled roller punctures the metal strip can be matched to the strip feed speed in such a way that there is no abrupt acceleration of the metal strip when piercing.
  • the profiled roller can first be inserted into the metal strip with slow strip feed and with slow roller rotation, followed by an accelerated strip feed movement and roller rotation. This is particularly advantageous for achieving small thickness tolerances.
  • strip feed can be adjusted very precisely to the length and position of the profiled strip sections and to the rotation of the rolls by a programmable electronic control unit, preferably also to the vertical displacement of one Roller, in particular to change the height of a roller gap delimited by two cylindrical roller shells or roller shell sections and thereby to produce a specific profile.
  • the metal strip can be retrieved not only by a reel arranged on the inlet side of the roll gap, but also by a return device designed as a plier feed device.
  • This embodiment of the invention is particularly suitable for processing shorter or stiffer strips, in particular for producing a pre-material for proofs. If the return device is a tongs feed device, it can be moved over it can also be used to advance the metal strip and feed it to the roll gap.
  • a tong feed device can also be used as a pulling device for the strip emerging from the roll gap during rolling.
  • This embodiment is also particularly suitable for processing shorter or stiffer tapes.
  • the quality of the strip-shaped primary material produced is increased if a defined tension is maintained in both the rolling and the retrieval of the strip, the thinner the metal strip being, the more favorable this influence is. But also with thicker tapes, e.g. used for the production of proofs, it is advantageous to keep the tape under tension and to guide it precisely during the rolling and retrieval between the retrieval device and the pulling device by a coordinated movement of these two devices.
  • the optimum strip tension can be maintained in all phases of a rolling step, in particular also in the critical phase of inserting a profiled roller into the metal strip, because because of the nature of the discontinuous multi-step rolling method from the standstill of the Rolls and the metal strip starts out, the engagement of the profiled roller in the metal strip does not occur suddenly, but so smoothly that in this critical phase of the insertion of the profiled roller into the metal strip and in the entire rolling step, the tensile force of the strip tensioning device, for example the reels, can be regulated to an optimal constant value for the respective band.
  • the reels and the rollers are advantageously synchronized and accelerated or braked to the same extent with their respective drive motors when the metal strip and the rollers are accelerating and braking.
  • the optimal preload, with which the bearing play of the rollers is clamped away, can be determined empirically for the respective application and then remains constant for the application. The optimization is preferably carried out in such a way that the elongation of the roll stand occurring in the respective application when leveling is compensated for and compensated for by appropriate adjustment of the prestress.
  • the leveling of the metal strip can not only take place when a profiled material is being produced, but also when producing a non-profiled material, as is e.g. is used for proofs.
  • the two rolls are cylindrical anyway and can be used for leveling in any position if the roll stand has a leveling design which reduces the influence of the play of the roll neck in their positions.
  • FIG. 1 shows a partially sectioned side view of a machine according to the invention
  • FIG. 2 shows a partially sectioned front view of the machine
  • FIG. 3 shows an enlarged section of the machine compared to FIG. 1, namely the main part of the roll stand of the machine
  • FIG. 4 shows an enlarged detail from FIG
  • FIGS. 5-10 show a flow diagram of a first working method that can be carried out with the machine
  • FIGS. 11-16 show a flow diagram of a second working method that can be carried out with the machine
  • Figure 17 shows a schematic diagram for carrying out the invention with two cylindrical rollers
  • FIG. 18 shows two rollers divided into six circumferential sections to explain a method for producing a pre-material for proofs
  • Figure 19 shows a modified machine according to the invention in a representation corresponding to Figure 1.
  • the machine shown in Figure 1 and Figure 2 has a foundation 1, on which a roll stand 2 is built in the middle, in front of and behind which a receiving device 3 and 4 for a reel 5 and 6 is fastened, which by an electrical Servomotor designed drive motor 7, 8 can be driven.
  • Two work rolls 11 and 12, hereinafter simply referred to as rolls, are mounted in lateral installation parts 9 and 9a of the roll stand, which together delimit a roll gap 13.
  • a support roller 14 and 15, respectively, of larger diameter is installed in built-in parts 10 and 10a.
  • the built-in parts 9, 9a of the work rolls 11 and 12 are each arranged in a section of the built-in parts 10, 10a of the support rolls 14, 15.
  • a metal strip 16 to be processed runs from the reel 5 via an overflow roller 17 into the roll gap 13, passes through it and passes via a further overflow roller 18 to the second reel 6, which winds up the metal strip 16 processed in the roll stand 2.
  • a device 19 for extracting rolling oil in which the metal strip 16 is cleaned of the rolling oil.
  • the structure of the roll stand 2 is shown in more detail in FIGS. 3 and 4. It follows from this that the two rollers 11 and 12, the diameter of which is only approximately 1/3 of the diameter of the support rollers 14 and 15, are mounted with their roller journals 20 and 21 in roller journal bearings 22, which are designed as roller bearings. A roll neck 21 of each of the two rolls 11 and 12 is extended beyond its roll neck bearing 22 and is designed as part of a cardanic suspension 23, which enables the drive of the two rolls 11 and 12 in each case by means of a cardan shaft 24.
  • An electric motor 41 driving the two rollers 11 and 12 synchronously via the cardan shafts 24 is shown in FIG. It drives the rollers 11 and 12 via a branching gear 48. However, it is also possible to drive the rollers 11 and 12 by two separate motors, as will be discussed with reference to FIG. 17.
  • the support rollers 14 and 15 have roller journals 25 which are mounted in roller journal bearings 26 of the lateral built-in parts 10 and 10a which are designed as roller bearings.
  • the roller journals 25 are extended beyond the roller journal bearings 26 and are inserted in bearing shells 27, of which the bearing shells of the lower support roller 14 are braced with the foundation 1, while the bearing shells 27 of the upper support roller 15 are braced with a crossbar 28 arranged above them.
  • the bracing is done with one of the bearing shells 27 outgoing threaded rod 29, on which a set of plate springs 30 is arranged, which is tensioned by a nut 31. This is only shown above the crossbeam 28, but is provided on the foundation 1 in the same way.
  • This preload reduces the bearing play of the support rollers 14 and 15 and thus its influence on the deviations in the thickness of the rolled metal strip from its target thickness.
  • the rollers 11 and 12 as well as the support rollers 14 and 15 thus achieve a concentricity of + 1 ⁇ m.
  • the required pre-tension of the roll stand 2 is generated with the aid of two spindles 32 and 33, which press from above onto the cross member 28 and onto the bearing shells 27 and each by its own electric motor 34 arranged on the top of the roll stand 2 (see Figure 1) are driven.
  • both electric motors 34 have a drive shaft 49 designed as a pinion, the teeth of which each mesh with a gear wheel 50.
  • the two gear wheels 50 are fixed in a rotationally fixed manner on one spindle 32 and on the other spindle 33.
  • the suitable preload of the roll stand is determined empirically from the elongation of the roll stand in the respective application and set so that the elongation is compensated for. After this presetting, the machine according to the invention operates as follows:
  • the metal strip 16 to be processed is unwound from the first reel 5, passed through the roll gap 13, pulled up to the second reel 6 and fastened thereon.
  • the first, lower roller 11 has a cylindrical outer surface 11.
  • the second, upper roller 12 has an outer surface (FIG. 5) with a profiled peripheral section 35, which has a length L1 in the circumferential direction of the roller 12, and a cylindrical peripheral section 36, which measured in the circumferential direction of the roller 12 has a length L2, both separated from one another by two cutouts 37 and 38.
  • the cylindrical peripheral portion 36 of the lateral surface has the greatest distance from the axis of the second roller 12, the Notches 37 and 38 have the smallest distance from the axis of the second roller 12.
  • the profiled peripheral section 35 of the lateral surface has a contour, the course of which is coordinated in the circumferential direction with the longitudinal course of the thickness of the nib, which are finally produced from the metal strip 16 should.
  • the first, lower roller 11, which is cylindrical, is only partially shown in FIGS. 5 to 16.
  • the processing of the metal strip 16 begins with the cylindrical circumferential section 36 of the second roller 12 piercing into the metal strip stretched between the two reels 5 and 6, and in fact gently at a slow feed speed of the metal strip 16 which is adapted to the circumferential speed of the cylindrical circumferential section 36
  • This puncturing phase is shown in FIG. 5, but not to scale, but with an excessively thick metal strip 16.
  • the stitch decreases of the metal strip are also shown exaggerated by the rolling process in order to make the rolling process clearer.
  • the cylindrical peripheral section 36 rolls on the metal strip 16 and typically reduces its thickness from 0.66 mm to 0.60 mm while at the same time equalizing the thickness.
  • the end of the leveling step is shown in FIG. 6.
  • the metal strip 36 now comes out of the engagement of the cylindrical peripheral portion 36 of the second roller 12, which rotates a little further until the cutout 37 faces the metal strip 16.
  • the metal strip 16 is now brought back by reversing the two drive motors 7 and 8 designed as servomotors, namely by a length which is greater than L1 but less than L2; L2 is the length over which this Metal band 16 was leveled.
  • the length by which the metal strip 16 is retrieved is chosen so that in the next step (FIG.
  • the profiled circumferential section 35 is used to roll the profile provided for the nib over the entire width of the metal strip 16 into its equalized section (FIGS. 7 and 8) ).
  • Figure 8 shows the end point of the roll forming step. It ends at a short distance before the end of the equalized section at its level.
  • the upper roller 12 continues to rotate, its cutout 38 faces the metal strip 16.
  • the upper roller 12 is moved upwards again by rotating the spindles 32 and 33, so that the height of the roll gap 13 required for the subsequent leveling rolling step is set.
  • the position of the cutout 38 between the profiled circumferential section 35 and the cylindrical circumferential section 36 of the second roller 12 and the positioning of the metal strip 16 in the roll gap 13 by means of the servomotors 7 and 8 of the reels 5 and 6 are coordinated with one another so that the next puncture of the cylindrical circumferential section 36 takes place at a small, approximately 2 mm distance behind the end of the previously leveled section of the metal strip 16 (FIG. 9), which initiates a further leveling step, as shown in FIGS. 9 and 10.
  • the servomotors 8 and 9 ensure that the tension in the metal strip 16 is as uniform as possible.
  • the exemplary embodiment shown in FIGS. 11 to 16 differs from the exemplary embodiment shown in FIGS. 5 to 10 in that the upper roller 12 not only has two peripheral sections, but also three Circumferential sections 35, 36 and 40, which are separated from one another by cutouts 37, 38 and 39, act on the metal strip 16 to be machined.
  • the roll stand 2 provided for this purpose has the same structure as that shown in FIGS. 1 to 4, with the proviso that the roller 12 shown in FIGS. 11 to 16 is used as the upper roll 12.
  • the peripheral section 36 is cylindrical, whereas the two peripheral sections 35 and 40 have a non-cylindrical profile. As in the example in FIGS. 5 to 10, the cylindrical circumferential section 36 is continuously at the greatest distance from the axis of the roller 12, which is advantageous when it comes to regrinding the cylindrical circumferential section, which is used for leveling, as required.
  • the working method shown in Figures 11 to 16 corresponds to the working method shown in Figures 5 to 10 with the special feature that after leveling the relevant section of the metal strip 16 is not profiled in one, but in two successive rolling steps, between which the metal strip 16 is retrieved again.
  • FIG. 11 shows, analogously to FIG. 5, the piercing of the cylindrical peripheral section 36 of the roller 12 into the metal strip 16.
  • FIG. 12 shows, analogously to FIG. 6, the end of the leveling rolling step.
  • the upper roller 12 is moved downwards by means of the spindles 32 and 33 in order to adjust the height of the roller gap 13 for the subsequent first roll forming operation, the beginning of which is shown in FIG. 13.
  • Figure 13 corresponds to Figure 7 and shows the piercing of the first non-cylindrical, profiled peripheral portion 35 of the roller 12.
  • Figure 14 corresponds to Figure 8 and shows the end of the first roll forming step.
  • Figure 16 shows the end of the second roll forming step.
  • the metal strip 16 becomes free again and can be positioned for leveling in the subsequent strip section, while simultaneously adjusting the height of the roll gap 13 provided for leveling. The sequence of steps shown in FIGS. 11 to 16 is then repeated.
  • This method of working is particularly suitable for the production of profiled sections in strips in which the desired stitch removal cannot be achieved or can only be achieved with difficulty or with the desired accuracy in a single profiling roll step.
  • the invention can also be carried out with more than two roll forming steps.
  • the diameter of the roller 12 can be increased as required.
  • a reducing rolling step in which the thickness of the metal strip 16 is initially reduced uniformly in sections before it is profiled in a later rolling step.
  • a roller is used as the lower roller 11 instead of a cylindrical roller, which roller except one or more cylindrical Circumferential sections in a manner similar to that of the upper roller has one or more profiled circumferential sections which are separated from one another by cutouts.
  • the two rollers 11 and 12 can be driven separately, they can be used for a wide range of profiling tasks.
  • the rollers 11 and 12 are driven separately, it can always be ensured that a cylindrical peripheral portion of the one roller cooperates with any other peripheral portion of the opposite roller during the rolling process, regardless of how the sequence of the peripheral portions is selected on the respective roller.
  • the invention is applicable not only to the production of primary material for nibs, but also for the production of other ribbon-shaped primary materials which are profiled in a series of regularly recurring sections over the entire width of the metal ribbon 16, e.g. for the production of a band-shaped primary material for the production of electrical conductor structures such.
  • Any profile shape that can be produced using optionally profiled rollers can be formed by the method according to the invention.
  • FIG. 17 shows in a schematic diagram how the servomotors 7 and 8 of the two reels 5 and 6, preferably also electric motors 41 and 42, also designed as servomotors, for driving the two rollers 11 and 12, and the two electric motors 34, in which it these are preferably also servomotors with a downstream gear 34a and with which the upper roller 12 can be displaced by means of the spindles 33 and 32 and are linked to one another via a uniform electronic control device 43.
  • Profile shape preferably stored in digital form, which is to be rolled into the metal strip 16
  • the rollers 11 and 12 are rotated, stopped and, if necessary, turned back and depending on the feed of the metal strip 16 and the profile shape entered into the control device 43, the roller 12 is displaced by actuating the electric motors 34.
  • the current positions are reported back to the control unit 43 by incremental rotary encoders. These rotary encoders are part of the servomotors 7, 8, 41 and 42. Between the spindles 32 and 33 and the two servomotors 34, an incremental rotary encoder 44 is shown separately as an example.
  • FIG. 17 shows two cylindrical rollers 11 and 12, of which the upper roller 12 has a radial, axially parallel cut 45 in order to obtain a reference for the angular position of this roller 12.
  • the upper roller 12 has a non-cylindrical peripheral portion, as shown in the previous examples, a displacement of the upper roller 12 during the rolling can be omitted; if necessary, it would then only take place between the individual rolling steps.
  • the curve according to which the displaceable roller 12 is displaced can not only be stored in the control unit by software.
  • mechanical cam control is also possible with the aid of a cam disc running synchronously with the belt feed.
  • the roll stand shown in FIG. 17 can also be used to produce a starting material for proofs with a particularly high surface quality.
  • the upper roller 12 expediently does not have the radial, axially parallel cut or not over its full length, but only at one of its edges, which is sufficient to obtain an absolute reference for the angular position of this roller 12.
  • the circumference of the rollers 11 and 12 is so matched to the diameter of the proofs to be produced that six proofs can be punched out in succession from a length of the starting material which is the same as the circumference of the rollers 11 and 12. Therefore, the roll surface is divided into six equal peripheral sections I to VI.
  • the method according to the invention can thus be carried out, for example, as follows: At the beginning, the outer surface of the two rollers 11 and 12 is lapped to a mirror finish. It is assumed that each section of the metal strip 16 having a length which corresponds to approximately 1/6 of the circumference of the rolls 11 and 12 is finished in three rolling steps. For this purpose, a first strip section is rolled between the peripheral sections I, the roll gap 13 is opened, the metal strip 16 is retrieved around the rolled section, rolled again between the peripheral sections I, retrieved a second time and then finished rolled between the peripheral sections II.
  • the second section of the metal strip 16 is rolled in the first rolling step between the peripheral sections I, retrieved, rolled in the second rolling step between the peripheral sections II, retrieved and finished rolled in the third rolling step between the peripheral sections III.
  • the third section of the metal strip 16 is rolled between the peripheral sections II in the first rolling step, then retrieved, rolled, retrieved between the peripheral sections IM in the second rolling step and rolled between the peripheral sections IV in the third rolling step.
  • the fourth section of the metal strip 16 is rolled between the peripheral sections III in the first rolling step, then retrieved, rolled between the peripheral sections IV in the second rolling step, retrieved and rolled between the peripheral sections V in the last rolling step.
  • the fifth section of the metal strip 16 is rolled between the peripheral sections IV in the first rolling step, retrieved, then in the second rolling step rolled between the peripheral sections V, retrieved and rolled between the peripheral sections VI in the last rolling step.
  • This cycle can be repeated as long as the surface quality that can be achieved with it meets the requirements.
  • the number of cycles required to obtain the desired surface quality can be determined by preliminary tests.
  • a thickness measuring device 51 is shown schematically in FIG. 17 and shown more specifically in FIG. 19.
  • the structure of the thickness gauge 51 is state of the art. It can be a measuring device with a mechanical probe head with a diamond tip, the deflection of which is picked up electrically, or a device which measures the strip thickness without contact with the aid of X-rays by measuring the weakening of the strip as it passes through the strip.
  • Such a thickness measuring device 51 can be part of a control circuit in which it determines the actual value of the strip thickness, inputs it to the electronic control device 43 as an input value, which compares the actual value with a predetermined target value and from it an actuating signal for the two Forms electric motors 34, which bring about a corresponding adjustment of the roll gap 13.
  • the device shown in FIG. 17 can also be used to produce metal strips or metal strips with a profile which extends transversely to their longitudinal direction and has a profile which extends continuously over the entire width of the metal strip 16 if one of the two rollers 11, 12 has a profile which extends in the circumferential direction appropriate profiling is provided.
  • FIG. 19 shows an exemplary embodiment modified compared to FIGS. 1 to 4. It differs from the exemplary embodiment in FIGS. 1 to 4 in that, instead of reels 5 and 6, tongs feed devices 52 and 53 are provided.
  • This embodiment is particularly suitable for shorter or thicker metal strips 16, which cannot be wound so easily.
  • This embodiment is particularly suitable for producing a starting material for proofs in lengths of, for example, a few meters.
  • the tongs feed devices 52 and 53 have a slide 56, 57, which can be approached and removed from the roll gap 13 in the horizontal direction by means of a servo motor 54, 55.
  • a dovetail-shaped tongue 58 is provided on the underside of the slide 56, 57, which engages in a matching dovetail-shaped groove 59, 60, which is formed on an attachment part 61, 62 of the roll stand 2.
  • the carriages 56, 57 are precisely guided horizontally. Other types of guidance are possible.
  • On each slide 56, 57 there is a lower jaw 63 rigidly attached to the slide and an upper jaw 64 whose distance from the lower jaw can be changed, preferably by means of a pressure center cylinder.
  • the metal strip 16 is passed between the two jaws 63 and 64, which form a pair of pliers or clamps, and clamped as required.
  • the tongs feed devices 52 and 53 can be actuated and moved individually but also together in a coordinated manner. In the second case, it is possible to maintain a defined tensile stress in the section of the metal strip 16 clamped between the two tongs feed devices 52 and 53, both during rolling and when retrieving.
  • the two tong feed devices 52 and 53 are arranged adjacent to the roll gap 13.
  • the device 19 for suctioning rolling oil is arranged, to which a thickness measuring device 51 connects, which detects and reports the thickness of the rolled metal strip 16 with a probe or without contact. so that at Deviations from the desired thickness can be controlled or regulated to change the height of the roll gap 13 in a suitable manner.
  • Drive motor (servo motor) 8. Drive motor (servo motor)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Laminated Bodies (AREA)

Abstract

Procédé et dispositif de fabrication d'un produit de départ en forme de bande, à l'aide de cylindres (11, 12) d'une cage (2) de laminoir qui délimitent un espacement de laminage (13). La bande métallique (16) est laminée par segments successifs entre les deux mêmes cylindres (11, 12) lors de deux étapes de laminage ou plus. Entre deux étapes de laminage successives, la bande métallique (16) est rappelée et le segment rappelé de la bande métallique est à nouveau laminé. Ledit procédé et ledit dispositif servent à fabriquer un produit de départ à qualité de surface très élevée et à tolérances d'épaisseur minimes ( par ex. pour frappes belle épreuve) et à fabriquer un produit de départ précis doté d'un profil, dont la forme transversale ne va pas du début à la fin de la bande dans le sens longitudinal de la bande métallique (16), mais est réalisée transversalement par rapport au sens longitudinal de la bande métallique (16) et se répète sur des segments successifs du produit de départ, par exemple pour des plumes de stylo. Pour cette deuxième utilisation, il est possible de modifier la hauteur de l'espacement entre cylindres au cours du laminage même.
PCT/EP2000/004269 1999-05-12 2000-05-11 Procede de fabrication d'un produit de depart metallique en forme de bande, en particulier d'un produit de depart profile a intervalles reguliers, et utilisation d'un dispositif permettant de mettre en oeuvre ledit procede WO2000069582A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE50000686T DE50000686D1 (de) 1999-05-12 2000-05-11 Verfahren zum herstellen eines bandförmigen vormaterials aus metall, insbesondere eines solchen vormaterials welches in regelmässig wiederkehrenden abschnitten profiliert ist, und die verwendung einer vorrichtung dafür
EP00936734A EP1183117B1 (fr) 1999-05-12 2000-05-11 Procede de fabrication d'un produit de depart metallique en forme de bande, en particulier d'un produit de depart profile a intervalles reguliers, et utilisation d'un dispositif permettant de mettre en oeuvre ledit procede
AT00936734T ATE226491T1 (de) 1999-05-12 2000-05-11 Verfahren zum herstellen eines bandförmigen vormaterials aus metall, insbesondere eines solchen vormaterials welches in regelmässig wiederkehrenden abschnitten profiliert ist, und die verwendung einer vorrichtung dafür
US10/030,328 US7334446B1 (en) 2000-05-11 2000-05-11 Method for producing a striplike pre-material made of metal, especially a pre-material which has been profiled into regularly reoccurring sections, and device therefor
AU52125/00A AU5212500A (en) 1999-05-12 2000-05-11 Method for producing a striplike pre-material made of metal, especially a pre-material which has been profiled into regularly reoccurring sections, and device therefor

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
DE19921720.3 1999-05-12
DE1999121720 DE19921720C1 (de) 1999-05-12 1999-05-12 Verfahren und Vorrichtung zum Herstellen eines abschnittsweise wiederkehrend profilierten bandförmigen Vormaterials für Schreibfedern
DE19925118 1999-06-01
DE19925118.5 1999-06-01
DE19927053 1999-06-14
DE19927053.8 1999-06-14
DE19932390.9 1999-07-14
DE19932390 1999-07-14
DE19933880.9 1999-07-22
DE19933880 1999-07-22
DE19938966.7 1999-08-17
DE19938966A DE19938966C1 (de) 1999-06-01 1999-08-17 Verfahren und Vorrichtung zum Herstellen eines bandförmigen Vormaterials aus Metall, insbesondere eines solchen Vormaterials welches in regelmäßig wiederkehrenden Abschnitten profiliert ist, und die Verwendung einer Vorrichtung dafür
DE10019175.4 2000-04-07
DE10019175A DE10019175A1 (de) 1999-05-12 2000-04-07 Verfahren zum Herstellen eines bandförmigen Vormaterials aus Metall, insbesondere eines solchen Vormaterials welches in regelmäßig wiederkehrenden Abschnitten profiliert ist, und die Verwendung einer vorrichtung dafür

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AT (1) ATE226491T1 (fr)
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DE10058367A1 (de) * 1999-11-26 2001-12-20 Honda Motor Co Ltd Walzvorrichtung
WO2002038305A1 (fr) * 2000-11-11 2002-05-16 Firma Carl Wezel Procede de fabrication d'un produit de depart en forme de bande, notamment en metal, profile par sections successives, et dispositif y relatif
CN109127735A (zh) * 2018-10-17 2019-01-04 大连华锐重工集团股份有限公司 一种轧辊轴瓦间隙调整机构

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CN111266414B (zh) * 2020-03-10 2021-08-06 浦项(张家港)不锈钢股份有限公司 不锈钢表面花纹深度控制方法

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US2235241A (en) * 1940-02-05 1941-03-18 Atwood Vacuum Machine Co Hinge and method of making members therefor
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JPH02182339A (ja) * 1989-01-10 1990-07-17 Kobe Steel Ltd 圧延異形条材の製造方法
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US2235241A (en) * 1940-02-05 1941-03-18 Atwood Vacuum Machine Co Hinge and method of making members therefor
FR1508916A (fr) * 1966-01-31 1968-01-05 Dalmine Spa Procédé et dispositif de tréfilage de corps à forme tronconique ou similaire
GB2050222A (en) * 1979-06-15 1981-01-07 Nhk Spring Co Ltd A method for manufacturing a taper spring
JPS6037201A (ja) * 1983-08-08 1985-02-26 Kawasaki Steel Corp 厚板の差厚圧延方法
US4793169A (en) * 1986-06-27 1988-12-27 United Engineering, Inc. Continuous backpass rolling mill
JPH02182339A (ja) * 1989-01-10 1990-07-17 Kobe Steel Ltd 圧延異形条材の製造方法
DE19504711C1 (de) * 1995-02-14 1996-11-14 Sundwiger Eisen Maschinen Verfahren und Vorrichtung zum Auswalzen der Enden eines aufgewickelten Bandes in einem Reversierwalzwerk

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058367A1 (de) * 1999-11-26 2001-12-20 Honda Motor Co Ltd Walzvorrichtung
DE10058367B4 (de) * 1999-11-26 2012-08-30 Honda Giken Kogyo K.K. Walzvorrichtung mit Einspannmitteln zum Greifen eines Stahlstreifens
WO2002038305A1 (fr) * 2000-11-11 2002-05-16 Firma Carl Wezel Procede de fabrication d'un produit de depart en forme de bande, notamment en metal, profile par sections successives, et dispositif y relatif
CN109127735A (zh) * 2018-10-17 2019-01-04 大连华锐重工集团股份有限公司 一种轧辊轴瓦间隙调整机构
CN109127735B (zh) * 2018-10-17 2023-09-12 大连华锐重工集团股份有限公司 一种轧辊轴瓦间隙调整机构

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EP1183117B1 (fr) 2002-10-23
ATE226491T1 (de) 2002-11-15
AU5212500A (en) 2000-12-05

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